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Method for producing color display tube

A production method and color display technology, which is applied in the field of color display tubes, can solve the problem that the qualified rate of screen making is only 20%, and achieve the effects of reducing production costs and improving production efficiency

Active Publication Date: 2011-10-26
中航华东光电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the pass rate of tube making (from sealing to factory inspection) has been above 90%, the pass rate of screen making is only about 20%.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A method for producing a color display tube includes a photosensitive glue coating process, a black matrix coating process, a phosphor coating process, an organic film coating process, an aluminum steaming process, and a baking process. In the film coating step, a protective layer coating step is provided.

[0018] The protective film coating process is:

[0019] a. Filter the ethanol solution of ethyl orthosilicate with a pH value of 3.5 and a volume concentration of 3.5% adjusted with phosphoric acid (GB1282-77) through a 240-mesh silk cloth, and then pour it on the screen, shake it evenly to make the solution uniform Distributed on the black bottom layer and the inner surface of the screen;

[0020] b. Install the screen of the coated display screen down to the centrifuge fixture, and centrifuge and dry for 6 minutes at 450 rpm to make the protective layer coating liquid evenly spin-coated on the display tube screen Inside.

[0021] c. Keep the centrifuged display at 115℃ ...

Embodiment 2

[0023] A method for producing a color display tube includes a photosensitive glue coating process, a black matrix coating process, a phosphor coating process, an organic film coating process, an aluminum steaming process, and a baking process. In the film coating step, a protective layer coating step is provided.

[0024] The protective film coating process is:

[0025] a. Filter the ethanol solution of ethyl orthosilicate with a pH of 3.6 and a volume concentration of 4% adjusted by phosphoric acid (GB1282-77) through 200 mesh silk cloth, and then pour it on the screen, shake it evenly to make the solution uniform Distributed on the black bottom layer and the inner surface of the screen;

[0026] b. Install the screen of the coated display screen down to the centrifuge fixture, and centrifuge for 6 minutes at 500rpm to make the protective layer coating liquid evenly spin-coated in the display tube screen .

[0027] c. Keep the centrifuged display at 120°C for 62 minutes to harden t...

Embodiment 3

[0029] A method for producing a color display tube includes a photosensitive glue coating process, a black matrix coating process, a phosphor coating process, an organic film coating process, an aluminum steaming process, and a baking process. In the film coating step, a protective layer coating step is provided.

[0030] The protective film coating process is:

[0031] a. Filter the ethanol solution of ethyl orthosilicate with a pH of 3.8 and a volume concentration of 4.5% adjusted with phosphoric acid (GB1282-77) through 240 mesh silk cloth, and then pour it on the screen, shake it evenly to make the solution uniform Distributed on the black bottom layer and the inner surface of the screen;

[0032] b. Install the screen of the coated display screen down to the centrifuge fixture, and centrifuge for 5 minutes at a speed of 550 rpm to make the protective layer coating liquid evenly spin-coated on the display tube screen .

[0033] c. Keep the centrifuged display at 125℃ for 60 minu...

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PUM

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Abstract

The invention discloses a method for producing a color display tube, which comprises steps of preparation of a screen component, preparation of a display screen, and preparation of a display tube. The preparation of the display screen comprises a photoresist coating process, a black base coating process, a fluorescent powder coating process, an organic film coating process, an aluminum evaporation process, and a roasting process. A protective layer coating process exists between the fluorescent powder coating process and the organic film coating process. After the protective layer coating process is used, the percent pass of the display screen is over 50 percent, the production efficiency is greatly improved and the production cost is reduced.

Description

Technical field [0001] The invention relates to a production method of a color display tube, in particular to a color display tube that can adapt to harsh environments. Background technique [0002] As the core display device of the modern aircraft integrated display system, the color display tube assembly is cross-linked with all equipment through the onboard computer to realize the comprehensive display of multi-functional information, becoming the pilot’s “eyes” for flight and navigation, and the link between man and machine interaction. ! Color display tubes that can adapt to harsh environments require high brightness, high definition, high positioning accuracy, high contrast, high structural strength and high reliability, and their design and manufacture are very difficult. Although the pass rate of pipe manufacturing (from sealing to factory inspection) has been above 90%, the pass rate of screen manufacturing is only about 20%. Summary of the invention [0003] The techni...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J9/20
Inventor 吴华夏方卫金兴隆何宏玉水恒春袁烨
Owner 中航华东光电有限公司