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    • 6. 发明授权
    • Method for producing luminiscent screen
    • 生产荧光屏的方法
    • US5922394A
    • 1999-07-13
    • US825279
    • 1997-03-27
    • Andrew Paul TrapaniGary Robert LarsonSteven Charles BrownDavid William Whitman
    • Andrew Paul TrapaniGary Robert LarsonSteven Charles BrownDavid William Whitman
    • H01J9/22H01J9/227H01J29/18H01J29/20H01J29/28B05D5/06
    • H01J29/28
    • The present invention is directed to producing a luminescent screen used in a cathode ray tube (CRT) suitable for monochromatic or chromatic images, such as, those utilized in televisions, computers or data monitoring equipment, which require CRTs. The method of the present invention produces an ablative layer of the luminescent screen having a smooth surface with reduced surface distortions, such as, streaks and waviness, which are typically produced by conventional coating processes. When a reflective aluminum film is deposited on such a smooth ablative layer, the reflective aluminum film is also provided with a smooth surface, since it typically conforms to the underlying smooth surface of the ablative layer. As a result, CRT images having reduced distortions are produced. The method of the present invention further provides for enhancing the brightness of CRT images, which results from utilizing low ash producing polymers in the ablative layer and the binder of a luminophor layer of the luminescent screen. The method of the present invention further provides for combining the step for volatilizing of the ablative layer and the binder in the luminophor layer with the step for cementing of the face plate of CRT with the cone of CRT, without adversely affecting the quality of the hermitic seal between the face plate and the cone.
    • 本发明涉及制造适用于单色或彩色图像的阴极射线管(CRT)中的荧光屏,例如需要CRT的电视,计算机或数据监视设备中使用的那些。 本发明的方法产生了具有光滑表面的可消除层,其具有减小的表面变形,例如条纹和波纹,其通常通过常规涂覆方法制备。 当反射性铝膜沉积在这样平滑的烧蚀层上时,反射性铝膜也具有光滑表面,因为它通常符合可消除层的下面的光滑表面。 结果,产生具有减小的失真的CRT图像。 本发明的方法还提供了增强CRT图像的亮度,这是由于在可消融层中使用低灰分产生聚合物和发光屏的发光体层的粘结剂。 本发明的方法还提供了将发泡体层中的可消除层和粘合剂挥发的步骤与CRT的锥体固定CRT的底板的步骤,而不会不利地影响阴离子的质量 面板和锥体之间的密封。