In the future, the market demand for 4K and 8K LED electronic screen high-definition screen will explode, and the new display represented by small spacing, mini led and micro LED will usher in a new technological inflection point. Technological innovation means that the industry will have the opportunity to change the rules of the game and the competition pattern in the display field.
As the leader of domestic LED chip industry, some LED electronic screen manufacturers have been deployed in the field of mini / micro led for a long time, and have made substantial progress. It has been optimized all over the world and obtained a number of technological breakthroughs and invention patents.
In the optimization of mini RGB LED chip technology, LED electronic screen manufacturers have designed a DBR flip chip structure with high reliability and brightness. The PV and mesa etching processes were optimized to cover the metal bonding layer smoothly. The electrode structure and metal deposition process were optimized, and the electrode with high reliability was designed. In addition, the unique jitter technology can eliminate the mura effect in cob applications.
At the same time, with the continuous reduction of chip size, the non tin paste package chip scheme will become the key to improve the melody and reduce the cost, and realize the technology application of making stonework directly on the electrode of mini LED chip. Red Mini LED chip technology has developed a high bond rate transmission and combination process. The upper layer damage protection layer is designed, the material deposition process is optimized, and the film is strengthened to ensure the risk of epitaxial top damage.
Optimize the film structure design of backlight Mini LED chip technology, adjust the chip output, make the ultra-thin design easier to achieve.
For micro LED chips, good results have been achieved in submicron level process linewidth control, chip side leakage protection, substrate stripping technology (batch chip transmission), array bonding technology (array bonding), and optical and light regulation of micro led. At present, the chip melody can reach 5 9 levels, and the efficiency of red micro LED has reached the international leading level, which can provide different forms of micro led examples for different transmission modes. “The small spacing display technology has matured, the third generation of small spacing products will be on the market soon, the technology of mini led flip RGB chip has been mass produced, and the technology of mini LED backlight chip is further maturing.” According to the vice president of Jinhe optoelectronics, micro LED is currently under development and needs joint development.
Micro LED displays will be used in TVs, mobile phones, AR / VR, vehicle displays, wearable electronic and digital displays (commercials and displays, etc.), he said.
