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Method for sealing ultra-thin shadow mask plasma display

A plasma display screen and shadow mask technology, which is applied in the manufacture of discharge tubes/lamps, electrical components, cold cathodes, etc., can solve the problems of low sealing success rate of ultra-thin plasma display screens, achieve uniform force, improve Stability, effect of avoiding bumps and cracks

Inactive Publication Date: 2010-08-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Technical problem: the object of the present invention is to solve the problem that the sealing success rate of the ultra-thin plasma display screen is low due to the absence of special treatment on the shadow mask in the existing sealing method of the ultra-thin plasma display screen, and proposes a method that can Sealing method of ultra-thin shadow mask type plasma display screen with improved sealing success rate

Method used

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  • Method for sealing ultra-thin shadow mask plasma display
  • Method for sealing ultra-thin shadow mask plasma display
  • Method for sealing ultra-thin shadow mask plasma display

Examples

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Effect test

Embodiment 1

[0027] In this example, we use the above method to complete the sealing of a 50mm×50mm phosphor-free pure Ne monochrome ultra-thin shadow mask display. The thickness of the ultra-thin glass is 50 μm. The first thick glass 1 and the second thick glass 3 are The PD200 glass with high flatness has an area of ​​100mm×100mm and a thickness of 1.1mm. The specific steps are as follows:

[0028] Step 1: Clean the first thick glass 1, the second thick glass 3 and the shadow mask with ultrasonic waves, and dry them;

[0029] Step 2 Place a shadow mask 2 with a size of 31.5mm×31.5mm between the first thick glass 1 and the second rear glass 3 to form a pre-fired assembly, and use the first sealing clip 4 and the second sealing clip 5 to seal the pre-fired The burning assembly is fixed;

[0030] Step 3 Put the fixed pre-fired assembly into a vacuum of 8×10 -5 In the sealing furnace of Pa, the initial temperature T 0 The room temperature is 25°C, according to the pre-burning curve, enter...

Embodiment 2

[0035] In this example, we use the above method to complete the sealing of 50mm×50mm ultra-thin shadow mask display screen with phosphor Ne+10% Xe green powder. The ultra-thin glass thickness is 50μm, the first thick glass 1 and the second thick glass Glass 3 uses PD200 glass with high flatness, the area is 100mm×100mm, and the thickness is 1.1mm. The specific steps are as follows:

[0036] Steps 1, 2, 3, and 4 are the same as steps 1, 2, 3, and 4 in Example 1;

[0037] Step 5: Coat the pretreated shadow mask 2 with green fluorescent powder, and bake the shadow mask 2 coated with the fluorescent powder at a temperature of 450° C., and the baking time is half an hour;

[0038] Step 6 is the same as Step 5 in Implementation Example 1;

[0039] Step 7 Attach the front substrate 8 of the ultra-thin screen and the rear substrate 7 coated with the sealing frame 6 of low-melting glass on the top and bottom of the pre-fired and cleaned shadow mask, and place them on the first thick gla...

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Abstract

The invention discloses a method for sealing an ultra-thin shadow mask plasma display. The method comprises the following steps of: cleaning and drying a shadow mask, first thick glass and second thick glass; positioning the shadow mask between the first and second thick glass and fixing the two sides of the shadow mask by using a first sealing clamp and a second sealing clamp; putting the shadow mask in a vacuum sealing furnace for pre-burning after fixing the shadow mask, wherein the pre-burning comprises an AB phase of raising the temperature, a BC phase of keeping temperature and a CD phase of lowering the temperature; cleaning the shadow mask after the pre-burning; aligning and attaching the front glass substrate of the display, the back glass substrate coated with a sealing frame, and the upper and lower surfaces of the shadow mask, placing the product obtained between the first thick glass and the second thick glass to form a sealing combination and fixing the sealing combination by using the first sealing clamp and the second sealing clamp; putting the sealing composition in the sealing furnace; setting the sintering temperature and the time; sealing the ultra-thin shadow mask plasma display; and filling working gas.

Description

technical field [0001] The invention relates to a sealing method of a display screen, in particular to a sealing method of an ultra-thin shadow mask type plasma display screen. Background technique [0002] At present, the general manufacturing process of the shadow mask type plasma display includes the front plate manufacturing process, the rear plate manufacturing process and the metal shadow mask manufacturing process. After the gas is filled, the working gas is filled to complete the production of the display screen. [0003] However, the thickness of the glass substrate used for the ultra-thin shadow mask ion display screen is very small (less than 1mm), and oxidation and impurity pollution will inevitably occur during the storage of the shadow mask, forming tiny burrs. The highest temperature can reach 450°C during the sealing process. The ultra-thin glass substrate will soften, and the thermal stress of the metal shadow mask is quite different. The thin display scre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/00H01J9/26
Inventor 朱振华金烨彭永林杨兰兰屠彦
Owner SOUTHEAST UNIV
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