透明PC注塑后盖上的彩虹纹
彩虹纹的影响
彩虹纹的出现，代表其存在内应力，当较为严重时，会造成后续工序不良。
图为喷漆制程后出现开裂不良对于显示面板来讲，通过背光模组发出的光本身便是一种偏振光，这时，如果我们在戴有偏光功能的太阳镜看向车前方的显示屏，显示面板上的内应力便会使其呈现彩虹纹，从而导致显示面板失真或者无法显示，影响视觉效果。
接触彩虹纹的根本在于降低产品内应力，整体来看，可以通过注塑工艺以及产品结构的改善来实现。
-
通过调整进胶口以及模具结构设计，使塑胶熔体以更合理的方案流入，从而减少制品内应力；
-
注塑工艺改善：通过调整注塑温度、螺杆转速、射出速度及分段保压等，方式尽量降低制品在注塑过程中产生的内应力。
-
退火处理进一步改善彩虹纹；
-
模具合理的水路分布以消除表面温差造成的彩色区域；
-
对薄壁产品来说，注塑压缩工艺可以有效地改善彩虹纹状态，而针对大尺寸车载显示面板来说，还可以结合双色注塑进一步改善。
来源东洋纺官网
The original article was posted on the WeChat official account "Smart Car Club."浅析车载显示塑胶盖板生产中的彩虹纹问题
Recently, vehicles equipped with integrated black, large-sized displays have gained recognition among many consumers, becoming a hot topic in the industry. Of course, curved displays, 3D glass, large multi-screen setups, OLED, and other hot topics have always been the focus of competition among major manufacturers. In such an industry landscape, Aibang has established a car display communication group. Currently, upstream and downstream enterprises in the display and bonding industry chain, such as FAW, SAIC, Geely, Great Wall, Changan, Harman, Marrelli, Huayang, Desay SV, Hangsheng Electronics, Tianma, BOE, TPK, Changxin Technology, Xinli, Lai Bao, Lanshi, Bern, Teyi, Victory Precision, Xingxing Technology, TDK, VAC, 3M, Tongli Optoelectronics, Corning, Schott, AGC, Nippon Electric Glass, Sumitomo, and Sabic, have joined. All friends are welcome to join the group for discussions and mutual progress.
Download
English 
Chinese