Smart TVs are entering millions of homes, and the development speed of televisions is obvious to all! So, which of the smart TV screens is best? Xiao Bian recommends five screen technologies and detailed comparisons to help users make better choices!
From the beginning of CRT fluorescent TVs to ordinary flat-screen TVs, the middle course of development has been a tortuous, rear-projection, plasma, and these products, which represent the technological advancement of generations of screens, have also left us with time. With the advent of LCD TVs, the word “smart†has become closely related to us. The intelligentization of human-computer interaction and the landing of web content have turned television into a new home entertainment terminal.
Once upon a time, television was the only entertainment tool in the family that had been able to view the screen for more than half a century. During this period, the fastest-growing years when LCD TVs dominated, from the introduction of smart operating systems, announced the arrival of the era of television intelligence, Then to Internet TV advocating high-end hardware configuration, this series of changes and innovations always seem to do with the big box that watch TV shows, TV or TV? Is TV's function weakened or transformed into an omnipotent Living Room Transformer?
Perhaps this is the situation. In recent years, people in the industry have once again done a deep reflection on television. What is the role of television? It is still the most critical part of the screen, after all, you buy a TV, whether it is playing games or watching movies or any other intelligent operations are required to complete the screen, then the basic function of television is to watch the content, so the current TV Vendors are now refocusing on this most important screen.
In 2014, it was the first year of the television loop back to the screen. This year has also become a year of revolution in television development. Before the first and second generation high-color LED screens established their footing, followed by the launch of OLED. In order to thwart OLED's strong momentum, there are domestic TV manufacturers launching new ULED, SLED, and GLED products. In order to further enhance the screen display effect, in December, another company launched a new QLED TV product, suddenly in 2014. Brought so many "XXXXLED products", then what is the difference between them? With so many English word abbreviations, how are they displayed?
First of all, let's briefly explain the Chinese literal translation meaning of these “XXXLED†screen technologies. OLED (Organic Light-Emitting Diode) is called Organic Light Emitting Diode, ULED is Ultra's abbreviation, translated as Extreme Display LED, GLED is the abbreviation of Geek LED, translated as geek Internet TV, QLED is translated as Active Matrix Quantum Dot Light-emitting diodes, SLED is the abbreviation of slim LED, that is, ultra-thin light-emitting diodes. These five major technologies currently come from five manufacturing brands all over the world. So is the selection of TVs to see the real effect or to look at the words? Here we have a comprehensive analysis of the five major technologies of the five brands.
OLED's future king of screen technology
Appeared for the first time
In January 2013, LG Electronics released the LG curved OLED TV at the CES for the first time in the world, which shows that the world has entered the era of large-size OLEDs. On September 13th, LG Electronics held a new television conference in Beijing to launch China’s first LG curved OLED TV, the LG55EA9800-CA, marking the official arrival of China’s OLED TV era.
This is the first time that OLED technology has been used on TV. First of all, before we introduce these “XXXLEDsâ€, we must first confirm that the term “LED†does not specifically refer to TV. LED is translated into LED in Chinese, which is the light source device. Why do TVs need light sources? Because the early display screens of televisions cannot emit light, they have color filters of red, green and blue colors, which are required to be illuminated by the backlight to display the corresponding colors. That is, the television needs a light source. To drive the LCD panel.
In fact, Deng Qingyun, a Chinese-American professor who was born in Hong Kong in 1947, has already discovered organic light-emitting diodes in the laboratory, that is, OLED. In 1990, Burroughes et al. discovered that a conjugated polymer PPV was used as a light-emitting layer. OLEDs have since culminated in OLED research around the world. Professor Deng is also known as the "Father of OLED." OLED is divided into two major technical systems, among which low-molecular OLED technology is mainly concentrated in Japan, South Korea, and China Taiwan. Low-molecular OLEDs are easier to colorize, so they are made into TV screen panels.
Product Features
To illustrate the OLED structure, each OLED unit can be compared to a hamburger. The luminescent material is sandwiched between vegetables. The display unit of each OLED can controllably generate three different colors of light. Like OLEDs, OLEDs also have active and passive divisions. The cells selected by the row and column address in active mode emit light. In the passive mode, there is a thin film transistor (TFT) behind the OLED unit, and the light emitting unit is turned on by the TFT. Active OLEDs are more power efficient than passive OLEDs, and display performance is better. OLED technology used by Korean-based LG Display, an exclusive Korean company, currently uses this method.
OLED display technology has self-luminous characteristics, using a very thin organic material coating and glass substrate, these organic materials will emit light when the current passes, and the OLED display screen has a large viewing angle and can save the power since 2003. This type of display device has been applied to MP3 players since the beginning of the year.
product structure
The basic structure of an OLED is composed of a thin and transparent indium tin oxide (ITO) with a semi-conductor characteristic, which is connected to the positive electrode of electricity, and another metal cathode, which is formed into a sandwich structure. The characteristics of OLEDs are self-illumination. Unlike TFT LCDs, which require backlights, visibility and brightness are high, followed by low voltage requirements and high power saving efficiency, coupled with quick response, light weight, and thin thickness, and a simple structure.
OLED technology originated from the masking of keywords, but the countries/regions that realize large-scale industrialization are mainly concentrated in East Asia, such as Japan, South Korea, China, and Taiwan. The global OLED industry is still in the early stages of industrialization. Although China has a certain OLED industry base, the industrial chain is still not perfect, especially the upstream products are not competitive. Most of the key equipment and systematic technologies of the entire equipment are in the hands of Japanese, South Korean and European companies. Global active OLED devices that are involved in the real threat of OLED (liquid crystal) in OLEDs, and currently only LG Display has achieved mass production of TV screens, and only LG has mastered the core technology of TV display OLEDs.
Display advantages
After being applied to a TV screen, OLED technology can be used as an organic self-illuminator, and can be self-illuminated without the support of a back light source. When no color is required, it can be directly turned off to make the black color more pure. OLED TVs can Providing higher-density pixels and sharper images means that the OLED screen can display 3D images completely without sacrificing the resolution of the images like most other TV sets. When viewing natural scenery videos on OLED TVs, you can watch the windows instead of watching a glowing dice.
A word of hot comment:
OLED TV is your next-generation display core technology. At present, almost all of the major technologies are in the hands of Korean manufacturers LG and Samsung. They have the advantages of fast response, light weight, and thin thickness. They do not need support from the back light source and can emit light by themselves. The screen display is brighter, but it is currently expensive and difficult to popularize.
ULED/GLED/SLED come from different types of the same camp
ULED independent control unit wins backlight
ULED is Hisense's LCD TV technology. ULED's U series is an acronym for Ultra, meaning Extreme, Ultra-High, meaning better LED. ULED TV through multi-zone independent backlight control and HiView landscape engine technology, Hisense ULED than traditional LED can achieve more than 10 times the contrast and color gamut range of more than 30% increase, the color performance is extremely beautiful; and in brightness, technology is also very mature.
China Electronics Video Industry Association research found that nearly 50% of consumers believe that ULED TV is more colorful than 4K TV. 40% of consumers think ULED TV has high resolution and clearer picture. In terms of picture quality, 77.0% of consumers think that ULED TVs have higher definition. So that we can see the current consumer ULED TV recognition, ULED screen from LG Display, IPS hard screen of the original, plus Shanghai Xinxin to the new HiView landscape engine technology to join and control, effectively improve the color of the screen .
ULED screen uses high color LED backlight source, equipped with precise image color gamut matching technology, the backlight is divided into multiple independent control units, each unit can accurately adjust the backlight opening of the corresponding area according to the distribution of light and dark fields of the TV screen. Close, and can adjust the peak value of the backlight brightness, so that it can not only achieve the effect of energy saving and power saving, but also can effectively enhance the vividness and realism of the color, make the TV screen bright and vivid, lifelike, and provide more color performance at the same time, ULED screen The use of backlight dynamic control and image enhancement technology can greatly improve the dynamic contrast of LED TVs, making black more sturdy, brighter white, bright and transparent, clear levels, reproduction of excellent picture performance, showing stunning details. At the same time, the ULED screen uses advanced backlight scanning technology to compensate for the lack of liquid crystal response speed and improve image smearing and jitter. Presenting a clear and fluid motion picture.
GLED adds white to make the backlight brighter
GLED, also known as Geek LED, also known as geek LED TV, is a new generation of LED TV independently developed by Skyworth. It adopts 4-color 4K+ technology, and is equipped with the first smart TV processor with China's independent intellectual property rights, and is equipped with a cool open system. A major innovation in LED. In terms of display technology, GLED has achieved a breakthrough improvement over the previous LED. In fact, the GLED screen is also produced by LG Display. Knowledge uses Skyworth's own image processing engine to make the picture look better. Great innovations are just an improvement.
Skyworth GLED TV
Skyworth GLED screen, which adds white sub-pixels based on the traditional red, green, and blue colors, adopts a new 4K screen with WRGB (white, red, green, and blue) 4-color pixels, and the physical resolution of the screen can reach 38,402,160. Four times the normal Full HD TV, the screen brightness and contrast are greatly enhanced. At the same time, the application of wide color gamut technology has effectively improved the color saturation, and built-in 4K MEMC+ technology, through the faster backlight scanning and more accurate analog frame interpolation calculation, effectively solve the problem of 4K source image jitter. Taking into account the high resolution while ensuring the smoothness of the high-speed motion picture, combined with 4K brightness enhancement film technology, the G8200 series makes the picture quality be more natural and natural, and the human eye is healthy and comfortable. It is currently the top 4K picture quality solution.
SLED color gamut increased more thin
SLED is Konka and LG Display's IPS hard screen design and manufacturing, its biggest feature is the thin, while the use of Konka's own graphics engine to make it in the image quality performance has been improved. In Slim's ultra-lightweight technology combined with Swinging's superb picture quality, the use of ultra-thin light-weight screens, new technology, and SCG's innovative screen technology, SLED's screen technology is ultra-thin It is only 7.5mm on Konka TV.
Using Konka's original SCG super quality technology, the company adopted the world's highest volume original color gamut in the backlight architecture to enhance color performance. The standard color gamut is as high as 114%. In the optical architecture, the latest DEBF from 3M is used to increase productivity. Bright solutions greatly increase light efficiency, achieve energy saving and environmental protection, reduce power, and protect components.
A word of hot comment:
Why do we need to combine ULED, GLED and SLED? In fact, the ULED, GLED and SLED screens are all from the LG Display. There is no excessive innovation on the screen, and only a lot of effort has been put on the backlight. All three technologies have LGD screen support while using their own developed backlight. The technology and the picture processing engine make it have better picture performance and backlight capability. After all, it is still something else.
Show the new trend QLED blocking OLED road
QLED name source
QLED is an abbreviation of "Quantum Dot light Emitting Diode". Its Chinese name is Quantum Dot LED. It can also be called quantum screen display technology. This is a new technology between LCD and OLED. The principle is through the blue LED light source. Irradiate the quantum dots to stimulate red and green light. After years of painstaking research and development, LG Display and Samsung Display formally announced that QLED Quantum Screen has already reached the conditions for mass production, sounding the clarion call for formal commercialization.
Quantum dot QLED display technology is to put the optical material of quantum dots between the backlight and the liquid crystal panel, so that the color gamut can reach or exceed the level of OLED, and even the polarizer on the light source side can be omitted, effectively reducing the liquid crystal display products ( For LCD TVs and LCDs) manufacturing costs.
Product Features
Quantum dot QLED display technologies mainly include quantum dot light emitting diode display technology (QLED) and quantum dot backlight technology (QD-BLU). Quantum dots have light emitting properties, and quantum dots (QDEF) in quantum dots (QDEF) are illuminated by blue LEDs. Red light and green light are generated and mixed with the rest of the blue light transmitted through the film to obtain white light, thereby enhancing the light emission effect of the entire backlight system.
Quantum dot QLED display technology unique characteristics, each time subject to light or electricity, quantum dots will emit colored light, the color of the light is determined by the composition of the quantum dot material and the shape of the size, quantum dots can be issued by the LED light source The blue light is completely converted to white light (traditional YAG phosphors can only absorb part of it), which means that at the same brightness, quantum dots QLEDs require less blue light and less electricity in electro-optic conversion, effectively reducing the backlight system The power consumption assembly.
Display advantages
Quantum dot QLED display technology unique advantages so that the TV brightness is effectively increased by 30 to 40%, the backlight system color conversion efficiency is greatly enhanced, the screen color is more beautiful, taking into account the characteristics of energy saving and environmental protection, the screen brightness, color purity are WLED About 2 times the backlight system, the performance improvement is very obvious. Taking into account the inherent deficiencies in the physical characteristics of liquid crystal technology, quantum dot QLED display technology can bring so many revolutions, can be called the "perfect form" of liquid crystal technology.
Quantum dot QLED display technology will directly compete with the OLED front, there are also some advantages, such as OLED manufacturing needs "shadow mask", and the mask is prone to thermal expansion and contraction, which affects the display accuracy, and QLED the entire manufacturing process does not need Yin The cover circumvents this problem and maintains stable image quality over a long period of time. In addition, OLED colors are not easy to control and require color filter "correction" to display different solid colors, and QLEDs can display different solid colors from the beginning. QLEDs are 30-45% more luminous efficiency than OLEDs, and QLEDs are twice as energy efficient than OLEDs in the same picture quality.
Samsung, TCL has announced that it will mass-produce QLED TVs. Recently, TCL has released its first QLED screen TV H9700. QLED QDs have three major advantages: wide color gamut coverage, more accurate color control, and more pure red, green and blue colors. QLED QDs have up to 110% NTSC color gamut in terms of color gamut coverage that consumers are most concerned about. Coverage value exceeds other LED TV products on the market. In terms of color control, by adjusting the crystal grain size of the quantum dots, the wavelength of light waves generated by the quantum dots can be adjusted easily and accurately, and light of different colors can be generated, so that the color can be controlled more accurately, and the vividness and realism of the color of the television display can be effectively improved. sense. In addition, the red, green and blue primary colors have clear spectral peaks corresponding to each other, with no overlap, energy concentration, and narrow peaks. The displayed red, green and blue colors are more pure and unmatched by other products.
A word of hot comment:
QLED quantum dot screen is currently based on the technology category between ordinary LED screen and OLED screen. QLED screen technology can completely convert blue light emitted by LED light source to white light, thereby reducing the need for blue light, more power saving, and the color gamut of QLED screen. More widely, but its brightness is stronger, and sometimes there is a tingling sensation.
Written at the end:
All of the above types of XXX LED screen products have been relatively clear we have introduced, OLED as organic light-emitting diode screen, has a fast response, light weight, thin thickness, do not need to support the back light source to self light, etc. , ULED, GLED and SLED are under the same kind of screen to upgrade and transform the backlight to make the picture more powerful. QLED is based on its unique blue light conversion technology to make it show a different solid color, improve luminous efficiency.
Different screens have different display effects. We cannot say that OLEDs must be the best screens for display, nor can they say that QLEDs have a state of unattainable performance in color gamut performance and fluency in the picture. The current advantages and disadvantages of the class screen, the color gamut is not the higher the better, at the factory, has been transferred to the best, each vendor's own gamut requirements are not the same, so there will be different color performance .
From the beginning of CRT fluorescent TVs to ordinary flat-screen TVs, the middle course of development has been a tortuous, rear-projection, plasma, and these products, which represent the technological advancement of generations of screens, have also left us with time. With the advent of LCD TVs, the word “smart†has become closely related to us. The intelligentization of human-computer interaction and the landing of web content have turned television into a new home entertainment terminal.
Once upon a time, television was the only entertainment tool in the family that had been able to view the screen for more than half a century. During this period, the fastest-growing years when LCD TVs dominated, from the introduction of smart operating systems, announced the arrival of the era of television intelligence, Then to Internet TV advocating high-end hardware configuration, this series of changes and innovations always seem to do with the big box that watch TV shows, TV or TV? Is TV's function weakened or transformed into an omnipotent Living Room Transformer?
In 2014, it was the first year of the television loop back to the screen. This year has also become a year of revolution in television development. Before the first and second generation high-color LED screens established their footing, followed by the launch of OLED. In order to thwart OLED's strong momentum, there are domestic TV manufacturers launching new ULED, SLED, and GLED products. In order to further enhance the screen display effect, in December, another company launched a new QLED TV product, suddenly in 2014. Brought so many "XXXXLED products", then what is the difference between them? With so many English word abbreviations, how are they displayed?
Thanks to the OLED product features it can be made lighter
First of all, let's briefly explain the Chinese literal translation meaning of these “XXXLED†screen technologies. OLED (Organic Light-Emitting Diode) is called Organic Light Emitting Diode, ULED is Ultra's abbreviation, translated as Extreme Display LED, GLED is the abbreviation of Geek LED, translated as geek Internet TV, QLED is translated as Active Matrix Quantum Dot Light-emitting diodes, SLED is the abbreviation of slim LED, that is, ultra-thin light-emitting diodes. These five major technologies currently come from five manufacturing brands all over the world. So is the selection of TVs to see the real effect or to look at the words? Here we have a comprehensive analysis of the five major technologies of the five brands.
OLED's future king of screen technology
Appeared for the first time
In January 2013, LG Electronics released the LG curved OLED TV at the CES for the first time in the world, which shows that the world has entered the era of large-size OLEDs. On September 13th, LG Electronics held a new television conference in Beijing to launch China’s first LG curved OLED TV, the LG55EA9800-CA, marking the official arrival of China’s OLED TV era.
This is the first time that OLED technology has been used on TV. First of all, before we introduce these “XXXLEDsâ€, we must first confirm that the term “LED†does not specifically refer to TV. LED is translated into LED in Chinese, which is the light source device. Why do TVs need light sources? Because the early display screens of televisions cannot emit light, they have color filters of red, green and blue colors, which are required to be illuminated by the backlight to display the corresponding colors. That is, the television needs a light source. To drive the LCD panel.
OLED screen for organic self-luminescence does not require backlight
Historical inquiry In fact, Deng Qingyun, a Chinese-American professor who was born in Hong Kong in 1947, has already discovered organic light-emitting diodes in the laboratory, that is, OLED. In 1990, Burroughes et al. discovered that a conjugated polymer PPV was used as a light-emitting layer. OLEDs have since culminated in OLED research around the world. Professor Deng is also known as the "Father of OLED." OLED is divided into two major technical systems, among which low-molecular OLED technology is mainly concentrated in Japan, South Korea, and China Taiwan. Low-molecular OLEDs are easier to colorize, so they are made into TV screen panels.
Product Features
To illustrate the OLED structure, each OLED unit can be compared to a hamburger. The luminescent material is sandwiched between vegetables. The display unit of each OLED can controllably generate three different colors of light. Like OLEDs, OLEDs also have active and passive divisions. The cells selected by the row and column address in active mode emit light. In the passive mode, there is a thin film transistor (TFT) behind the OLED unit, and the light emitting unit is turned on by the TFT. Active OLEDs are more power efficient than passive OLEDs, and display performance is better. OLED technology used by Korean-based LG Display, an exclusive Korean company, currently uses this method.
OLED light emission principle
OLED display technology has self-luminous characteristics, using a very thin organic material coating and glass substrate, these organic materials will emit light when the current passes, and the OLED display screen has a large viewing angle and can save the power since 2003. This type of display device has been applied to MP3 players since the beginning of the year.
product structure
The basic structure of an OLED is composed of a thin and transparent indium tin oxide (ITO) with a semi-conductor characteristic, which is connected to the positive electrode of electricity, and another metal cathode, which is formed into a sandwich structure. The characteristics of OLEDs are self-illumination. Unlike TFT LCDs, which require backlights, visibility and brightness are high, followed by low voltage requirements and high power saving efficiency, coupled with quick response, light weight, and thin thickness, and a simple structure.
OLED features make it even thinner
OLED technology originated from the masking of keywords, but the countries/regions that realize large-scale industrialization are mainly concentrated in East Asia, such as Japan, South Korea, China, and Taiwan. The global OLED industry is still in the early stages of industrialization. Although China has a certain OLED industry base, the industrial chain is still not perfect, especially the upstream products are not competitive. Most of the key equipment and systematic technologies of the entire equipment are in the hands of Japanese, South Korean and European companies. Global active OLED devices that are involved in the real threat of OLED (liquid crystal) in OLEDs, and currently only LG Display has achieved mass production of TV screens, and only LG has mastered the core technology of TV display OLEDs.
Display advantages
After being applied to a TV screen, OLED technology can be used as an organic self-illuminator, and can be self-illuminated without the support of a back light source. When no color is required, it can be directly turned off to make the black color more pure. OLED TVs can Providing higher-density pixels and sharper images means that the OLED screen can display 3D images completely without sacrificing the resolution of the images like most other TV sets. When viewing natural scenery videos on OLED TVs, you can watch the windows instead of watching a glowing dice.
A word of hot comment:
OLED TV is your next-generation display core technology. At present, almost all of the major technologies are in the hands of Korean manufacturers LG and Samsung. They have the advantages of fast response, light weight, and thin thickness. They do not need support from the back light source and can emit light by themselves. The screen display is brighter, but it is currently expensive and difficult to popularize.
ULED/GLED/SLED come from different types of the same camp
ULED independent control unit wins backlight
ULED is Hisense's LCD TV technology. ULED's U series is an acronym for Ultra, meaning Extreme, Ultra-High, meaning better LED. ULED TV through multi-zone independent backlight control and HiView landscape engine technology, Hisense ULED than traditional LED can achieve more than 10 times the contrast and color gamut range of more than 30% increase, the color performance is extremely beautiful; and in brightness, technology is also very mature.
China Electronics Video Industry Association research found that nearly 50% of consumers believe that ULED TV is more colorful than 4K TV. 40% of consumers think ULED TV has high resolution and clearer picture. In terms of picture quality, 77.0% of consumers think that ULED TVs have higher definition. So that we can see the current consumer ULED TV recognition, ULED screen from LG Display, IPS hard screen of the original, plus Shanghai Xinxin to the new HiView landscape engine technology to join and control, effectively improve the color of the screen .
Hisense ULED TV
ULED screen uses high color LED backlight source, equipped with precise image color gamut matching technology, the backlight is divided into multiple independent control units, each unit can accurately adjust the backlight opening of the corresponding area according to the distribution of light and dark fields of the TV screen. Close, and can adjust the peak value of the backlight brightness, so that it can not only achieve the effect of energy saving and power saving, but also can effectively enhance the vividness and realism of the color, make the TV screen bright and vivid, lifelike, and provide more color performance at the same time, ULED screen The use of backlight dynamic control and image enhancement technology can greatly improve the dynamic contrast of LED TVs, making black more sturdy, brighter white, bright and transparent, clear levels, reproduction of excellent picture performance, showing stunning details. At the same time, the ULED screen uses advanced backlight scanning technology to compensate for the lack of liquid crystal response speed and improve image smearing and jitter. Presenting a clear and fluid motion picture.
GLED adds white to make the backlight brighter
GLED, also known as Geek LED, also known as geek LED TV, is a new generation of LED TV independently developed by Skyworth. It adopts 4-color 4K+ technology, and is equipped with the first smart TV processor with China's independent intellectual property rights, and is equipped with a cool open system. A major innovation in LED. In terms of display technology, GLED has achieved a breakthrough improvement over the previous LED. In fact, the GLED screen is also produced by LG Display. Knowledge uses Skyworth's own image processing engine to make the picture look better. Great innovations are just an improvement.
Skyworth GLED TV
Skyworth GLED screen, which adds white sub-pixels based on the traditional red, green, and blue colors, adopts a new 4K screen with WRGB (white, red, green, and blue) 4-color pixels, and the physical resolution of the screen can reach 38,402,160. Four times the normal Full HD TV, the screen brightness and contrast are greatly enhanced. At the same time, the application of wide color gamut technology has effectively improved the color saturation, and built-in 4K MEMC+ technology, through the faster backlight scanning and more accurate analog frame interpolation calculation, effectively solve the problem of 4K source image jitter. Taking into account the high resolution while ensuring the smoothness of the high-speed motion picture, combined with 4K brightness enhancement film technology, the G8200 series makes the picture quality be more natural and natural, and the human eye is healthy and comfortable. It is currently the top 4K picture quality solution.
SLED color gamut increased more thin
SLED is Konka and LG Display's IPS hard screen design and manufacturing, its biggest feature is the thin, while the use of Konka's own graphics engine to make it in the image quality performance has been improved. In Slim's ultra-lightweight technology combined with Swinging's superb picture quality, the use of ultra-thin light-weight screens, new technology, and SCG's innovative screen technology, SLED's screen technology is ultra-thin It is only 7.5mm on Konka TV.
Konka SLED TV
Using Konka's original SCG super quality technology, the company adopted the world's highest volume original color gamut in the backlight architecture to enhance color performance. The standard color gamut is as high as 114%. In the optical architecture, the latest DEBF from 3M is used to increase productivity. Bright solutions greatly increase light efficiency, achieve energy saving and environmental protection, reduce power, and protect components.
A word of hot comment:
Why do we need to combine ULED, GLED and SLED? In fact, the ULED, GLED and SLED screens are all from the LG Display. There is no excessive innovation on the screen, and only a lot of effort has been put on the backlight. All three technologies have LGD screen support while using their own developed backlight. The technology and the picture processing engine make it have better picture performance and backlight capability. After all, it is still something else.
Show the new trend QLED blocking OLED road
QLED name source
QLED is an abbreviation of "Quantum Dot light Emitting Diode". Its Chinese name is Quantum Dot LED. It can also be called quantum screen display technology. This is a new technology between LCD and OLED. The principle is through the blue LED light source. Irradiate the quantum dots to stimulate red and green light. After years of painstaking research and development, LG Display and Samsung Display formally announced that QLED Quantum Screen has already reached the conditions for mass production, sounding the clarion call for formal commercialization.
QLED Quantum Dot LED
Quantum dot QLED display technology is to put the optical material of quantum dots between the backlight and the liquid crystal panel, so that the color gamut can reach or exceed the level of OLED, and even the polarizer on the light source side can be omitted, effectively reducing the liquid crystal display products ( For LCD TVs and LCDs) manufacturing costs.
Product Features
Quantum dot QLED display technologies mainly include quantum dot light emitting diode display technology (QLED) and quantum dot backlight technology (QD-BLU). Quantum dots have light emitting properties, and quantum dots (QDEF) in quantum dots (QDEF) are illuminated by blue LEDs. Red light and green light are generated and mixed with the rest of the blue light transmitted through the film to obtain white light, thereby enhancing the light emission effect of the entire backlight system.
QLED quantum dot principle
Quantum dot QLED display technology unique characteristics, each time subject to light or electricity, quantum dots will emit colored light, the color of the light is determined by the composition of the quantum dot material and the shape of the size, quantum dots can be issued by the LED light source The blue light is completely converted to white light (traditional YAG phosphors can only absorb part of it), which means that at the same brightness, quantum dots QLEDs require less blue light and less electricity in electro-optic conversion, effectively reducing the backlight system The power consumption assembly.
Display advantages
Quantum dot QLED display technology unique advantages so that the TV brightness is effectively increased by 30 to 40%, the backlight system color conversion efficiency is greatly enhanced, the screen color is more beautiful, taking into account the characteristics of energy saving and environmental protection, the screen brightness, color purity are WLED About 2 times the backlight system, the performance improvement is very obvious. Taking into account the inherent deficiencies in the physical characteristics of liquid crystal technology, quantum dot QLED display technology can bring so many revolutions, can be called the "perfect form" of liquid crystal technology.
Quantum dot QLED display technology will directly compete with the OLED front, there are also some advantages, such as OLED manufacturing needs "shadow mask", and the mask is prone to thermal expansion and contraction, which affects the display accuracy, and QLED the entire manufacturing process does not need Yin The cover circumvents this problem and maintains stable image quality over a long period of time. In addition, OLED colors are not easy to control and require color filter "correction" to display different solid colors, and QLEDs can display different solid colors from the beginning. QLEDs are 30-45% more luminous efficiency than OLEDs, and QLEDs are twice as energy efficient than OLEDs in the same picture quality.
TCL first to launch QLED QD TV in December
Samsung, TCL has announced that it will mass-produce QLED TVs. Recently, TCL has released its first QLED screen TV H9700. QLED QDs have three major advantages: wide color gamut coverage, more accurate color control, and more pure red, green and blue colors. QLED QDs have up to 110% NTSC color gamut in terms of color gamut coverage that consumers are most concerned about. Coverage value exceeds other LED TV products on the market. In terms of color control, by adjusting the crystal grain size of the quantum dots, the wavelength of light waves generated by the quantum dots can be adjusted easily and accurately, and light of different colors can be generated, so that the color can be controlled more accurately, and the vividness and realism of the color of the television display can be effectively improved. sense. In addition, the red, green and blue primary colors have clear spectral peaks corresponding to each other, with no overlap, energy concentration, and narrow peaks. The displayed red, green and blue colors are more pure and unmatched by other products.
A word of hot comment:
QLED quantum dot screen is currently based on the technology category between ordinary LED screen and OLED screen. QLED screen technology can completely convert blue light emitted by LED light source to white light, thereby reducing the need for blue light, more power saving, and the color gamut of QLED screen. More widely, but its brightness is stronger, and sometimes there is a tingling sensation.
Written at the end:
All of the above types of XXX LED screen products have been relatively clear we have introduced, OLED as organic light-emitting diode screen, has a fast response, light weight, thin thickness, do not need to support the back light source to self light, etc. , ULED, GLED and SLED are under the same kind of screen to upgrade and transform the backlight to make the picture more powerful. QLED is based on its unique blue light conversion technology to make it show a different solid color, improve luminous efficiency.
Different screens have different display effects. We cannot say that OLEDs must be the best screens for display, nor can they say that QLEDs have a state of unattainable performance in color gamut performance and fluency in the picture. The current advantages and disadvantages of the class screen, the color gamut is not the higher the better, at the factory, has been transferred to the best, each vendor's own gamut requirements are not the same, so there will be different color performance .