车载液晶显示器模组黑态均匀性改善研究

Research and Improvement of Black Uniformity in Automotive TFT-LCD Module

基于减小模组应力,系统的研究了工艺、材料、设计对黑态均一性的影响,确定出可满足70%面扫的方案。实验结果表明:1)模组设计上采用减薄至0.4 mm的液晶屏搭配1.3 mm厚度的盖板;2)材料选择使用上下材质一致的偏光片,液态光学贴合胶,低温各向异性导电胶;3)对盒工艺降低机械臂运行速度,可将车载液晶显示器模组的面扫黑态均匀性提升到70%。

Based on reducing module stress,the effects of process,materials and design on black uniformity were studied systematically,and the method was determined that could meet the specification of area-scan 70%.The experimental results showed that by 1)design adopted thinned panel(0.4mm)and cover glass(1.3 mm);2)the materials used polarizers that top and bottom materials were the same,liquid optical clear resin,and low temperature ACF;3)VAS process reduced the running speed of the lift bar,in this way,the black uniformity on automotive TFT-LCD module area-scan could be increased to 70%.