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Jun 8, 2023, 1:55:11 AM
What is LED flip chip?
Why is the LED screen inversion technology?
What are the advantages of LED screen inversion technology?
As we all know, in recent years, people have been comparing inverted with formal dress, and even it is an inevitable trend that LED screen inverted replaces formal dress frequently in the industry, but at present, the market is still dominated by formal dress. Industry insiders have different opinions on whether inverted packaging can really replace it.
It is understood that at present, the LED chip structure mainly includes three schools: front, reverse and vertical, of which the front structure is the most common one. Flip packaging technology first appeared in 2007, and was first applied by packaging companies in the field of lighting. The reason why flip chip is called "flip chip" is relative to the traditional wire bonding method and the process after ball planting. The traditional chip connected to the substrate through metal wire bonding faces up, while the flip chip faces down, which is equivalent to turning the former over, so it is called "flip chip".
In the field of led display, the led display screen is required to be easy to transport, light and thin, and easy to disassemble. In order to achieve this goal, the existing technology usually uses to reduce the size of the unit box. However, due to the influence of the external frame, power supply system, and led crystal integrated by the led display screen, the display screen has a graininess, which affects the display effect.
In view of the shortcomings in the above technologies, the utility model provides a led flip screen, which flips and welds the led chip on the circuit board, saves the cost of traditional lamp bead support, gold wire, and chip mounting, improves the production efficiency, and the surface is integrally formed, which is easy to disassemble and splice.
In order to achieve the above purpose, the utility model provides an inverted led display screen. The display screen includes a circuit board, a drive IC and a led chip. The display screen consists of a multi-layer structure. From the bottom to the top, the drive IC, the circuit board, the led chip and the glue or glue are based on this. The led chip is welded with the circuit board in an inverted way and fixed on the pcb base plate. The drive IC is set on the pcb base plate and connected with the led chip.
1. The active layer is closer to the substrate, shortens the heat flow path from the heat source to the substrate, and has lower thermal resistance;
2. Suitable for large current drive, with higher light efficiency;
3. Superior reliability can improve product life and reduce product maintenance cost;
4. The size can be smaller, and the optics are easier to match.
In fact, in terms of technology alone, the flip LED full-color display has indeed solved many problems. For example, the flip-chip non-gold wire packaging solves the problems of non-bright and flicker caused by faulty soldering or poor contact of gold wire; Flip chip welding technology improves the heat dissipation ability, improves the stability of the product under high current impact, and improves the product life; The inverted installation and use process is faster and more convenient to avoid quality problems or hidden dangers caused by installation. Perhaps, with the continuous development of flip chip technology, the flip chip market will become increasingly clear in the near future.