The original data transmission rate in the 3G era was 2Mbps. In this case, the display video source specification is basically 8bit color/2K resolution/30Hz frame frequency; in the 4G era, the data transmission capacity has become 1Gbps, and the video source specification Upgrade to 10bit color/4K resolution/60Hz frame frequency. With the advent of the 5G era, the data transmission speed is faster, and the video source specification reaches 12bit color/8K resolution/120Hz frame frequency; in the next 2-5 years, most of the TVs you buy will be 8K, plus streaming transmission technology With the rise, users can watch videos while downloading, which greatly saves waiting time, and it is foreseeable that they will have better visual enjoyment.
Although 5G is the trend of the times, we also know that the resolution of LED displays with different dot pitches is different relative to the size of the screen.
If the dot pitch of our LED display is 0.9375mm, and the 4K screen is 163 inches, when the 5G era is to extend the specifications to 8K, the 8K screen is 325 inches, and its height becomes 4 meters high. A 4-meter-high screen is basically no problem in a large conference room, but if it is used in a company's small conference room, the 4-meter-high height is too high and not suitable. If it is a 0.75mm dot pitch LED screen, the height of the 8K screen is 3.24 meters, while 3.2 meters is relatively high for an average office building, which may be the height of the entire floor, so it still looks a bit tall. Make the LED dot pitch smaller, to 0.625mm, the 8K screen height is 2.7 meters, and some meeting rooms may also be usable. But if you want to be more mainstream, more 8K displays available for touch in meeting rooms, what is the dot pitch? In fact, a dot pitch of 0.4mm is more suitable. The screen height is 1.73 meters, which is almost the distance of a person's height. It is more suitable for meetings such as personal presentation sharing or group discussion. To replace LCD as the mainstream 8K display for indoor applications, it is an inevitable development phenomenon that the dot pitch of LED displays should be reduced to 0.4mm, and it is also the main battlefield for Mini LED and Micro LED displays.
On the other hand, due to the ultra-high data transmission speed of 5G, 8K display video sources have brought new challenges, such as the 120Hz high frame rate video format. For the LED display, it will cause the problems of image data transmission and image output display. The DCLK double-edge trigger and GCLK internal oscillation technology of the overdrive architecture can restore the display of the video source.
Therefore, in the face of the advent of 5G+8K, Mini/Micro-LED displays also face the following challenges:
✔ Ultra-small pitch may be less than 0.8mm.
✔ The drive current should be less than 1mA. Because the more lights with dot spacing, the smaller the current received.
✔ Ultra high resolution must reach 4K or higher. 8K may be the mainstream in the next few years.
✔ The size is limited and must be larger than 32 scans. As the density of the lamp becomes higher, the number of driver chips will increase exponentially. How good is the position for accommodating the chips? More than 32 scans is the mainstream choice in the market.
✔ Color requirements are more abundant. There are 8bit, 10bit, and 12bit input video recordings. Whether the grayscale of the output lamp can reach the effect of 16bit is a challenge for our driver chip.
✔ The high frame rate must be at least 60HZ. High frame frequency is the mainstream application trend in the future.
In order to meet the demand for higher-end displays of Mini LED and Micro LED in the 5G+8K era, Macroblock has launched the MBI5864 flagship high-integration LED driver IC. MBI5864 has been upgraded to support 64-line scanning applications in terms of product architecture, and is suitable for solutions with a minimum dot pitch of 0.4mm. The row and column scan design architecture of MBI5864 helps reduce the number of driver ICs used. The most amazing thing is the power consumption performance of MBI5864, which greatly reduces the proportion of IC power consumption on the module, which can bring lower surface temperature and avoid color shift display problems caused by temperature. MBI5864 has also improved the accuracy to cope with the small current output range, providing GFN packaged products so that the customer's placement process can maintain the status quo, and BGA packaged products to help users achieve smaller pitch displays.
