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Sealing frame for planar display device and production thereof

A technology for flat panel display devices and display devices, which is applied to instruments, sealed enclosures, identification devices, etc., can solve the problems of large sealing edge width, long processing cycle, uneven sealing edges, etc., and achieves neat and beautiful sealing edges. , High precision and yield, ensure the effect of sealing edge width

Inactive Publication Date: 2008-04-02
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The former requires bulky and expensive special equipment, and the width of the obtained sealing edge is relatively large (generally greater than 5mm), and the sealing edge is uneven, which is not very beautiful; the latter has a complicated operation process and requires multiple printings. Baking for one time, the processing cycle is too long, and the airtightness is poor, the display panel is easy to leak
In addition, because many specific display occasions today require large and super-large screens with a display area ranging from a few square meters to tens of square meters, they use modular splicing flat panel displays. In order to eliminate the window frame feeling caused by the splicing of modules, It is required that the width of the sealing side of the display panel is not greater than 0.6mm, that is, narrow side sealing, and the above two methods are difficult to achieve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1), prepare 500g sealing with low melting point glass powder, used formula is as follows:

[0030] Composition Weight (g)

[0031] Lead oxide (PbO) 356

[0032] Boric acid (H 3 BO 3 ) 68

[0033] Zinc oxide (ZnO) 41.6

[0034] Alumina (Al 2 o 3 ) 6.5

[0035] Silicon dioxide (SiO 2 ) 16.7

[0036] Copper Sulfate CuSO 4 11.2

[0037] (2) Mix the 6 ingredients of the above formula, and melt the mixture at 1050° C. for 20 minutes. After the obtained mixed material block is cooled, it is crushed, and then ball milled for 24 hours with a ball mill, and sieved with a 36 μm (400 mesh) standard sieve to obtain a powdery low melting point glass powder of <36 μm.

[0038] (3) Then, 300 g of a liquid adhesive composed of 97% by weight of terpineol and 3% by weight of ethyl cellulose was added to prepare a uniform slurry.

[0039] (4) Pour the slurry into a special graphite sealing frame mold, place the mold together with the mold on an ultrasonic vibrating ta...

Embodiment 2

[0046] In Example 2, except that the liquid adhesive was a solution composed of 98% by weight butyl acetate and 2% by weight nitrocellulose, the experiments were carried out according to the conditions of Example 1. Basically the same results as in Example 1 were obtained.

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PUM

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Abstract

The seal frame in use for the flat panel display is made by means of following steps: mixes the un-crystallizing low melting point glass frit with organic bonding materials; pre-burns the mixed materials in a dedicated mold for making seal frame, and then makes mold stripping; the seal frame is a right angle endless frame; the length and the width of the outskirt of the seal frame equals the length and width of the flat panel display sealed; the width of the seal frame is 0.4-5 mm; the height of the seal frame equals the sum of the space between front board and rear board and 10-20 um.

Description

technical field [0001] The invention relates to a sealing frame for flat panel display device sealing and a preparation method, in particular to a sealing frame used for sealing the periphery of a flat panel display device. Background technique [0002] At present, most of the sealing methods for preparing flat panel display devices, including plasma display (PDP), vacuum fluorescent display (VFD), field emission display (FED) and liquid crystal (LCD), are made of low-melting glass powder for sealing by manipulators. The paste-like paste is extruded on the four sides of the display glass plate and heated and sealed. There is also a screen printing method, where the low-melting point glass powder paste is printed several times through the screen printing mask and then heated and sealed. The former requires bulky and expensive special equipment, and the width of the obtained sealing edge is relatively large (generally greater than 5mm), and the sealing edge is uneven, which is...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05K5/06C09J129/00C03C3/074G09F9/00
Inventor 顾智企章哲明顾征梁宜勇
Owner ZHEJIANG UNIV
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