随着智能电视的发展与普及,越来越多的家庭购买大尺寸的电视机摆放在客厅,既美观又时尚,在高兴的同时,不要忘记为检测一下电视屏幕。电视屏幕的好坏直接影响着我们的观看体验与感受,当然对于我们的视力也有一定的影响,所以检测电视屏幕是我们买完电视后一定要做的事情。
苏孝雨,张荣辉,张杰,杨亚宁(大连民族大学 信息与通信工程学院,辽宁 大连 116600)摘要:随着液晶的普及,对液晶屏生产过程中质量控制提出更高的要求,液晶屏裂痕自动检测系统应运而生,它能真正实现高效率、高稳定性的实时检测。
英:STN has nematic LC which can twist from 180 degrees to 270 degrees or uses namatic LC display type. With a fixed angle, the straight polarizer shoots on to the axis of the LC molecule and because of the birefringence property, the straight polarizer becomes ellipse polarizer. By utilizing the existence of electrical field to control the LC molecule to stay in between the STN structure and vertical orientation, STN can be drove from the property of birefringence. Generally, they are in either yellow or blue color, and it can display white color when special phase film or compensated LC board. This also applies to color display. Comparing with TN, it has a wider viewing angle, but the disadvantage is slow in response speed.
曲面电视自去年韩国电视巨头LG电子率先引入我国后,已成为彩电领域一个新的发展方向。日韩和中国的主要彩电厂商纷纷推出新品,以求占领市场。一时间,曲面电视领域呈现出欣欣向荣的局面。但问题随之而来,产品众多,没有一个统一的标准,规格大小不一,性能参差不齐。