Surface coating with enhanced colour contrast for

专利名称：Surface coating with enhanced colour

contrast for video display

发明人：Tong, Hua-Sou,Hu,Chun-Min,Yu, Yu-Chung,Hsu,Ming-Yu,Wang, Kuo-Chu

申请号：EP95307219.6申请日：19951011公开号：EP0735562A1公开日：19961002

专利附图：

摘要：For use in a self-emitting colour display device such as a cathode ray tube (CRT)having a display screen with a phosphor coating on its inner surface, a surface coating

disposed on the outer surface of the display screen affords improved colour purity, orcontrast, by reducing overlap in the colour spectrum between two adjacent primarycolours, i.e. between red and green and/or between green and blue. An organic dye isadded to either an inner antistatic layer or an outer antireflective layer of anantireflective/antistatic outer coating on the display screen, where both of the

aforementioned layers contain silane. The dye functions as a colour filter absorbing onlylight within the frequency range between adjacent primary colours, such as between thered and green colour phosphors, i.e. in the range of 460-500 nm, and/or between thegreen and blue colour phosphors, i.e. in the range of 560-600 nm. A silane coupling agentis also added to serve as a binding agent bridging the organic dye and silane together. Inthis manner, the organic dye is bonded to the silane in either the antistatic layer or theantireflective layer to prevent separation and escape of the organic dye filter from eitherof these layers of the outer coating on the display screen.

申请人：Chunghwa Picture Tubes, Ltd.

地址：80 Hsing Shan Road Yangmei Taoyuan, Taiwan 32606 TW

国籍：TW

代理机构：Newby, Martin John

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