The substrate is then assembled into the final display. This precision assembly technique is called “mass transfer technology”. The Micro LED panel is assembled through several tiny units and finally into the large screen. Since Micro LED is directly installed on the LCD panel, it does not need backlight module and optical diaphragm, and uses inorganic materials to form the luminous layer, so it is not easy to appear OLED screen burning. The penetration rate is up to 90% better than LCD and OLED, and it can also make the display more power saving.
White light with different color temperatures can be obtained by regulating the ratio of blue light and yellow light. As the circuit design of white LED using blue light excitation is simple, and the preparation process of phosphor is quite mature, which greatly reduces the manufacturing cost, the scheme based on blue light LED chip to generate blue light excitation yellow phosphor to generate white light has been the most widely used in commercial applications. The white light generated by this method lacks the red spectrum. Therefore, the color rendering of the white LED is low (<70). Ultraviolet light excitation white LED refers to the use of UV chip emitted near ultraviolet light as the excitation source to excite red, green, blue composite fluorescent materials to obtain white light (UV-LED).
After the chip was unsealed, the scanning electron microscope analysis showed that the black adhesion on the surface of the inner bonding point and the bonding area of the LED were corrosion products, containing abnormal elements Na and Cl. Failure mechanism related to conductive adhesive, LED chips with electrodes on the back are often bonded by a conductive adhesive as an electrode for the LED (leds without electrodes on the back can be bonded by other non-conductive adhesives, and both electrodes are electrically connected by bonding). Conductive adhesives are generally composed of prepolymers, diluents, crosslinkers, catalysts, metal powders and other additives.
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