Original edition for color display tube shadow mask printing

A color picture tube and shadow mask technology is applied in the field of original plates for color picture tube shadow mask printing, which can solve the problems of neck shrinkage and no transition.

Inactive Publication Date: 2006-11-08
烟台正海电子网板股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the compensation pattern is concentrated in the corner, and there is no very gentle transition between the non-compensation area and the neck shrinkage phenomenon, such as Figure 5 and Image 6 shown by the dotted line in

Method used

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  • Original edition for color display tube shadow mask printing
  • Original edition for color display tube shadow mask printing
  • Original edition for color display tube shadow mask printing

Examples

Experimental program
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Effect test

Embodiment 1

[0039] Such as Figure 8 As shown, the basic hole pattern on the original plate for shadow mask printing is a rectangle with a width (sw) of 220 microns and a length (sl) of 550 microns, and the four corners of the hole shape are designed with the proposed invention. The concave hexagonal compensation pattern, where the height, width, sw_dec, sw_delta, sl_dec1, sl_dec2, tip are 11, 24, 64, 13, 32, 91, 22 microns, the fifth side and the length of the rectangle are 45 degree angle, the shape of the shadow mask hole obtained by etching is as follows Figure 8 As shown by the dotted line in the middle, the width of the shadow mask slot is 320 microns, the length is 650 microns, and the four corners are arcs with a radius of 30 microns, and there is no neck constriction. After such an improved design, the light transmission area can be increased by about 3%, while the length and width of the slots of the shadow mask do not change significantly.

Embodiment 2

[0041] Both the preceding comparative example and embodiment 1 are cases where the light passes through vertically. When the shadow mask hole is close to the edge of the screen, due to the large deflection angle of the electron beam, the steps of the cone surface will block the electron beam that could have passed through. Such as Figure 2B As shown, the fluorescent powder strips on the fluorescent screen are as image 3 As shown, there is an obvious defect in the corner, which is reflected in the macroscopic view that the brightness of the corner of the color picture tube is obviously insufficient, and the color purity is reduced. In order to change this situation, the slots on the corners of the screen are designed on the side away from the center as Figure 9 The protrusion shown in the lower right corner of the center can make the vermicelli on the fluorescent screen more full, thereby significantly improving the corner brightness of the color picture tube. This kind of...

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Abstract

This invention provides a shadow mask image-printing original edition of a color tube, which takes a concave hexagon as the compensation pattern to be spliced on a corner to be compensated of the rectangular shadow-mask aperture pattern to prevent contraction of the corner and the cervix in the process of etching and manufacture shadow-masks of particular hole shapes of square and bone.

Description

technical field [0001] The invention relates to an original plate for color picture tube shadow mask printing, in particular to an original plate for color picture tube shadow mask printing with a compensation design at the corner of a hole pattern. Background technique [0002] The shadow mask is one of the key components of the color picture tube. It is not only the template for the exposure when the color picture tube is painted, but also the color selection electrode when the color picture tube is working. [0003] When the color picture tube is working, the electron beam emitted from the electron gun passes through the slot hole of the shadow mask and hits the corresponding position of the fluorescent screen, and the phosphor is excited to emit light, and the shape of the phosphor strip is also made by using the shadow mask as a template , so the improvement of the brightness and the uniformity of the color picture tube must start with the improvement of the light trans...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/14G03F1/22G03F7/00
Inventor 杨胜利崔兴盛刘健唐毅晟任作鹏王德山韦明周丰刚李焕顺
Owner 烟台正海电子网板股份有限公司
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