Overcoming the problem of light and dark stripes is an excellent technology performance
Technically, V-cut light guide structure is likely to cause the problem of light and dark stripes because of the optical properties. And the manufacturers of backlight module overcome the technical obstacle in urgent need. Taiwan’s LCD module manufacturers have a higher quality requirement to light guide plate than Korean and Japanese LCD module manufacturers. It is a key point for them to develop optical and precision processing technology that to make the best combo for precision machined prism surface of light guide plate and atomizing surface. However, there are some bottlenecks of technical development in significantly improving the brightness of v-cut technology. Some suppliers of brightness enhanced film of light guide plate question that the structure of v-cut light guide plate is easy to cause the problems of scratching, poor uniformity and weak mechanical strength and so on. If it adopts traditional light guide plate technology, the pass rate will be affected by the scratching. It requires the high quality manufacturers of backlight module who have advanced equipments and professional staffs with quality training.
Uniformity is about 75% for v-cut technology light guide plate, compared with 85% for traditional technology, which is an inevitable phenomenon when meeting customers’ requirements about the best performance of middle part of the light guide plate and excellent luminance. There are a lot of ways to solve the problem of weak mechanical strength problem. For example: first laminating then fixing has passed most of vibration and shocking tests.