Touch Taiwan 2022 exhibition was launched in Taipei on April 27, with the Future cross-domain integration display as the main axis of this year, which can be seen that major manufacturers such as Fucai, Accumulation, AUO, and Zichuang have shown their works accumulated over the years of experience and painstaking efforts.
Ennostar
The products exhibited focused on display and sensing. Walking into the venue, you will be greeted by an ultra-small pitch display with 0404 RGB LEDs. In addition to this, the 0202 / 0303 / 0404 RGB LED display solution from small to large size was demonstrated on site.
Fucai, TOGETHER and Innolux will invest NT$10 billion in Micro LED plans in Miaoli, targeting graphics, TVs and AR. Therefore, chip on Wafer ;COW) with 6-inch and 8-inch Micro LEDs can be seen at the venue, and for different applications, the 6-inch GaN on Sapphire or 8-inch GaN on Si wafer process can be used.
In addition, according to TrendForce Jibang Consulting, most customers require micro LEDs to be transferred to the scratch substrate after the chip process is completed (Chip on Carrier; COC 1), enrichment is optimized at the Bump Pad to improve transfer yield.
As a key display technology of the next generation of Micro LED, it can be seen that the display effect capability of the QD Micro LED display has been significantly improved.
The second market focus is the automotive display, in response to the needs of high dynamic contrast (HDR), regional dimming (Local Dimming), wide color gamut, etc., so the product trend towards the development of the straight down backlight, the scene showed the 384 area of the automotive display products, the product performance is quite amazing. At the same time, 60% transparent displays are also displayed on site, and the potential application market is head-up displays or window displays.
Third, visible to 27-inch MiniLED display backlight and 17.3-inch MiniLED notebook, the number of area dimming up to 512 areas, in the cost and yield considerations, the future chip size will have the opportunity to adjust to 07x12mil or 06x18mil.
Finally, Fucai also displayed intelligent atmosphere lights for automobiles, plant lighting, infrared sensing, and ultraviolet LED products.
Intelligent Ambient Light is an RGB LED (12x12mil) with a built-in driver IC, which not only simplifies circuit design, improves product application flexibility, and easily achieves full-color color mixing and dynamic situation effects, but also has the opportunity to be introduced into e-sports display products.
The 660nm red chip required in plant lighting can achieve a photoelectric conversion rate (WPE) of 80% for rich products. Infrared LEDs are designed with a 45mil large chip and a Dual Junction chip architecture to increase brightness and are used in driver/occupant monitoring systems.
Macroblock
At present, in order to pursue higher picture quality in the industry, many e-sports displays have introduced full matrix area dimming mini-LED backlighting, different from traditional backlighting technology, the "imaging" characteristics of the full matrix area dimming MiniLED backlight can achieve high dynamic contrast (HDR) and area independent dimming function, but when the MiniLED backlight does not have a variable refresh rate, it makes the picture appear "flickering" and "brightness uneven" problems, reducing the visual entertainment of e-sports players.
Therefore, the MBI5359 of Accumulation Technology introduces the variable refresh rate function, whether it is used for static or scanning type MiniLED backlit displays, which can effectively handle the problem of vertical synchronous signal (Vsync.) not matching the frame rate of the picture source, bringing the ultimate visual experience to e-sports players.
In addition to understanding how MiniLED multi-zone backlight technology is applied to the common displays of life and the advanced visual experience brought by video game battles, Accumulation Technology also set up a curved ultra-small pitch (0.75mm) LED direct display display at the booth to provide players with a stronger sense of gaming immersion.
Notebook computers emphasize thin and light, in response to high dynamic contrast (HDR), area dimming (Local Dimming), wide color gamut and other trends, so MiniLED is gradually introduced into notebook computers. Live display of 16-inch notebook computer, area dimming up to 512 zones, the use of MBI6334 driver IC chip, the product has 64 channels 8-line sweep specifications, in the current and brightness considerations of the use of two driver ICs, there have been several e-sports pen and power brand mass production.
The 27-inch esports screen also adopts zone 512, designed with four LEDs in one zone, and adopts MBI6353, with a 48-channel 4-row scan design, officially entering the Chinese mainland customer supply chain. In addition, the automotive display also has high dynamic contrast (HDR), area dimming (Local Dimming), wide color gamut and other development trends, accumulated active layout MBI6353Q, with the AEC-Q100 certification passed, will be officially launched at 2H22.
Samsung, LG, TCL, Sharp, Sony, Skyworth, Huawei and other TV brand manufacturers are also actively promoting the development of the MiniLED market, accumulated in the scene to display a 75-inch 4K TV, the number of regional dimming up to 2,880 areas, the use of MBI6329, with 48 channels 8-line scan design, and brand customers to achieve a new era of high dynamic contrast (HDR).
AUO
AUO successfully launched its first display series, from active drive solutions to passive drive solutions, including transparent displays, 54-inch TVs/displays, virtual shooting studios and ball flight simulators using ALED technology.
The transparent display can combine the real thing with the display image, such as the fireworks animation of the 101 commercial building with the transparent display, combined with the eye tracking function, when the viewing angle moves to the oblique front, the fireworks will also move along, so that the fireworks viewing is presented in front of the line of sight, full of interactive fun. Quite intimately, the surface of the transparent display screen is atomized, which can reduce the interference caused by reflections.
Transparent display can also be used as information presentation, which is suitable for retail department store space and window display functions. Micro LED transparent screen, applied to the intelligent car of the future, ushers in a new century of combining mobility and communication for advanced driver assistance systems (ADAS), autonomous vehicles and car sharing.
With Samsung's active development of actively driving Micro LED The Wall, AUO, as an LTPS supplier, has successfully exhibited a 54-inch P0.625 FHD TV/display, using 16 13.6-inch LTPS, and the product has three major features:
1. AUO's industry-leading advanced anti-reflective technology (A.R.T.) adopts a unique surface structure to reduce direct glare and maintain excellent image quality even in environments with strong light sources. The surface design of the display reduces the interference of ambient light, helps to present the true hue, saturation and contrast, and achieves the same pure black display effect as OLED technology;
Second, the maximum brightness can reach 2,000 nits, which is widely used in high-brightness environments;
Third, through the multi-piece LPTS splicing method to achieve the ideal size, with unlimited imagination of the application market.
In addition, the red and green color display from the scene is highly uniform. As product stability improves, actively driving Micro LED displays will shine in ≤ P1.0 ultra-small pitch displays.
Virtual shooting includes two application directions: film shooting and TV drama/music/advertising shooting. AUO launched the P1.25 virtual shooting display, which perfectly fits with XR technology through the LED display, replacing the traditional green screen ( Green Screen ), greatly reducing post-production time and greatly reducing video production costs, at the same time, the immersive immersive experience is helpful for the director and actors to play on the spot, making the LED display in the virtual shooting application field steadily improved.
The AUO team used special ingenuity, also using the P1.25 display, but using the special curved dome design, it created a unique immersive experience space, which can not only be applied to the play field, but also for special training such as land, sea and air driving, pilots, and ambulance driving.
PlayNitride
Through different Micro LED solutions, combined with the application context, users can better experience the dazzling performance and unlimited possibilities of micro LED ultimate display, including large display, automotive transparent display and augmented reality products.
It is worth noting that there is a separate display area in the exhibition hall, exhibiting 0.49-inch FHD resolution, the specification is leading the industry up to 4,536 ppi, and the high-brightness full-color μ-Pixe LED display made of blue Micro LED with color conversion technology realizes the future potential of Micro LED augmented reality glasses.
Micro LED is the next generation of display technology, with flexible screen and transparent screen, applied to the future of smart cars, its information display will appear in almost all areas inside and outside the car, for advanced driver assistance systems (ADAS), autonomous vehicle (Autonomous Vehicle) and shared cars (Car Sharing) to create a new century of mobile (Mobility) and communication (Communication) combination.
Tron successfully published a 9.38-inch, 114ppi, 960x480 transparent Micro LED display with a penetration rate of 65-70%. 70% of the > will meet the specifications required by the automaker, and it will be possible to be introduced into the automotive market in the future, according to Chuangchuang.
For wearable device applications, Tron presents a passively driven 1.58-inch square Micro LED display. Compared with olED display, micro LED has faster response time and more advantages in the grayscale control performance of the control panel, perfectly showing the advantages and effects of passive drive.
Text: TrendForce Joanne
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