LED light guide plate industry development analysis

The development trend of LED light guide plate industry, as one of the accessories of LED lighting, plays an important role in the development of the industry, and it is also one of the industry links with scale advantages and cost advantages in the division of global semiconductor lighting industry chain. .

With the continuous promotion of applications such as backlight and lighting, the market demand for LED light guide plates is constantly changing. In terms of current and future market demands, backlight and lighting will become the most important applications, and requirements for LED light guide devices More and more high, low-level screen printing light guides are difficult to meet the application requirements of LED quality.

With the gradual expansion of China's light guide plate companies, many companies have begun to compete for listing and strive for financing opportunities. LED light guide plate industry, the degree of concentration, the scale of an individual company and the degree of automation will be greatly improved. With the change of the structure of led light guide plates, laser light guide plates also show prominent features.

Although the light guide plate industry is facing a good future, but because of the "self thin, difficult to mix light" problem hindered the development of the led industry also hindered their own development.

First, in the light guide design of LED, a very vexing problem is how to enlarge and image the LED spot light source, and achieve high brightness and high uniformity through LED array design and diffusion micro-architecture. This kind of technology is often in close contact with optical microlens design, manufacturing process, flat LED packaging technology (mainly to improve the lighting angle), and homogenization of mixed light technology research and development.

Second, LEDs can be designed to be flexible in any shape, but overly complex shapes can constrain the LEDs themselves and cause difficulties in power supply design. The double-sided nature of this feature makes it necessary to grasp the shape scale of the LED design.

Third, the LED is a point light source, which must be repeatedly reflected in the light guide plate. When the light is reflected, part of the light will spread out from the convex dots, and then emit light from the surface to illuminate the screen. Therefore, the light guide plate must be made thin enough to achieve higher brightness. At present, the thinnest LED light guide plate in the industry has a thickness of about 0.8 mm, and the demand for light guide plates that are thinner and have better reflection efficiency is more and more urgent, but the current processing technology cannot meet the requirements.

In summary, the nature of LED thinness determines the market demand. However, under the current technical difficulties, the cost of producing thinner and more efficient light guide plates will increase, the efficiency will be reduced, and the cost will remain high. This is definitely not a “good factor” in the competition with CCFL. So how will the manufacturers deal with it? Can they disperse the risk through light guide plate processing? These problems are placed before the manufacturers of light guide plates. These problems will certainly be solved, but when will they be eliminated, we will continue to pay attention.