Apple is reportedly investing in Micro LED technology for its devices, including the Apple Watch and possibly a new iPhone. Samsung showed off its micro LED technology for the first time in the industry, but for cost and profit margin reasons, it first appeared in TVS. The Micro LED design uses all the advantages of OLED, self-lighting technology, perfect black and excellent color, while discarding organic compounds, achieving a smaller luminescent element size than the mini LED.
The realization of white LED. Semiconductor light-emitting diode (“ LED “for short) is a new type of lighting device which combines electrons and hole radiation to produce light by injecting current. With the advantages of energy saving, environmental protection, long life, easy control and maintenance-free, white LED is widely used in automotive headlight, backlight display module, high-speed rail ship searchlight, medical and industrial lighting and other fields. At present, according to the different chips, there are three main technologies that can realize white light, which are multi-chip white LED, ultraviolet light excited white LED and blue light excited white LED. The following is a brief introduction to the principles and advantages and disadvantages of these three ways to achieve white light.
How to improve the reliability of LED products is a problem in the industry. However, at present, there are few studies on the reliability of LED devices, and the information that can be consulted is limited. Through the analysis of failed LED devices, this paper introduces several typical failure mechanisms on LED internal chip, conductive adhesive, bonding, LED use, LED welding and so on. Chip defect, The failed LED showed an increase in positive voltage drop (Vf). In the process of electrical measurement, it was found that the forward voltage drop increased, and with the increase of forward voltage, the sample can still emit light.
Micro LED technology for the first time
MicroLED panels are very thin
Miniature and array of traditional LED
Micro LED install on the LCD panel
LED and OLED up to 10bit
The cost of Micro LED is high
LED industry chain with chip design and manufacturing
Upstream LED epitaxial chip enterprises
Glass-based Mini LED backlight
The trend of LED display development