The hottest TCL csot betting miniled screen it can

2022-08-15
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TCL csot bet Mini LED screen, can it replace OLED

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original title: TCL csot betting Mini LED screen, can it replace OLED? Source: interface

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with TCL csot announcing to join the mini LED technology battle to avoid sample slippage and fracture in the fixture, this new screen technology scheme is becoming a challenger of OLED

on August 30, TCL ChinaStar released a new generation of screen, mled star screen. It adopts TFT LCD process and amorphous silicon glass substrate to drive LED backlight technology. In other words, this is a mini LED technology screen

in addition to TCL Huaxing, let's learn about the basic installation and debugging of the interface. Now, companies such as BOE, Youda, qunchuang and LG are actively laying out this technical scheme

after LCD screen technology, new generation display technology solutions, including OLED and micro led, have emerged earlier. Why do manufacturers suddenly turn around and bet on mini led

mini led refers to the LED chip with a grain size of about 100 microns. After arraying the LED chip, it can be used as the backlight of display screen and TV

mini LED backlight package adopts flip chip Mini led to directly realize uniform light mixing without lens for secondary optical design. Due to its small chip structure, it is conducive to make the number of dimming partitions more detailed, achieve a higher dynamic range (HDR), and achieve higher contrast; On the other hand, it can also shorten the optical mixing distance (OD) to reduce the thickness of the whole machine, so as to achieve the purpose of ultra-thin

before that, OLED was recognized as the latest generation of screen innovation technology. OLED (organic light emitting diode), also known as organic light emitting semiconductor display (OLED). OLED is a kind of current type organic light-emitting device, which emits light through carrier injection and recombination. The luminous intensity is proportional to the injected current

as early as 2008, Youda and other Panel Companies in Taiwan, China began to develop OLED panel technology b1.21, but finally gave up because of the difficulty and high cost of mass production. At almost the same time, Samsung and LGD insisted, but eventually Samsung also gave up large-size OLED panels due to mass production process problems, and only focused on small-size OLEDs. LGD has become the only enterprise that still adheres to the production of large-size OLED panels

however, 3D sprint with multiple SLA printers saves users time and cost. Over the years, large-size OLEDs still face many problems. For example, the existing technology of large-size OLED is mainly white OLED. The evaporation process will cause extremely low material utilization, and the luminous materials are extremely expensive, so the mass production cost remains high; OLEDs will age rapidly under high brightness, resulting in short service life; If the screen displays a still image for a long time, it will leave a residual image, which is permanent and cannot be eliminated

besides OLED, micro LED is also a more advanced technology

micro LED technology, namely led miniaturization and matrix technology. Simply put, it is to thin film, miniaturize and array the LED (light emitting diode) backlight, which can make the LED unit less than 50 microns. Like OLED, it can address each pixel separately and drive light independently (self illumination). Its advantage is that it not only inherits the characteristics of inorganic led such as high efficiency, high brightness, high reliability and fast reaction time, but also has the characteristics of self illumination without backlight. It is small, light and thin, and can easily achieve the effect of energy saving

compared with OLED, mini LED has wider application space, higher brightness, longer service life, no residual image (the so-called "screen burning"), wider color gamut than OLED, 8K, and more freedom in size and resolution

but the disadvantages of mini LED are also obvious. OLED has a larger viewing angle: OLED self illumination makes the visual angle up to 170 degrees, which is naturally ultra wide viewing angle; The response speed of OLED finished products is faster: the response speed of OLED display screen is faster than that of mini LED screen (subtle level, which is difficult for customers to perceive in practical applications), and there is no dragging phenomenon when displaying dynamic pictures, etc

in addition, it is difficult to solve technical problems such as mass transfer (transferring a large number of micron sized LED chips to circuit substrates), highly reliable equipment, mass production cost and so on, which leads to the fact that it may take a long time for micro LED panel technology to achieve mass production

in other words, mini LED is a compromise solution before OLED and microled technologies are mature. During this technology gap period, mini LED has become a competitive position for various panel manufacturers

tcl Huaxing is just like this. The company said that it is still optimistic about the printing OLED technology for a long time, but it is at least three years away from the switching of this technical route. During this period, it must ensure that competitive high-end products can be launched. Mini LED can support 8K upward (OLED currently only supports 4K), so it will be an important product technology in the next stage

in addition, on the production line, TCL Huaxing's Mini LED production line does not need major changes, but only needs to add testing equipment. All production lines of TCL Huaxing can undertake the production of large-size and small-size Mini LEDs

according to industry estimates, the price of LCD TV panel designed with mini LED backlight is only 60-80% of that of OLED TV panel, but its brightness and image quality are similar to OLED, but its power-saving efficiency is higher

mini LED may become an important product technology route of TCL CStar in the next stage. Compared with white light OLED, it has a comparative advantage and occupies the highland of display technology in the field of high-end products. It is expected to be mass produced and shipped in the second half of this year to supply TCL electronics and other brand TV manufacturers

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