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Electrode paste, electrode made from same, manufacturing methods thereof and PDP display screen provided with electrode

An electrode slurry and pigment technology, which is applied in the manufacture of electrode systems, the manufacture of discharge tubes/lamps, conductive materials dispersed in non-conductive inorganic materials, etc. Increase, the electrode pattern does not meet the accuracy requirements and other problems, to achieve the effect of reducing yellowing phenomenon, bright room contrast, and inhibiting migration

Inactive Publication Date: 2010-06-09
SICHUAN COC DISPLAY DEVICES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the disadvantage of this process is that it cannot form high-precision electrode patterns, and with the increase of printing times, the screen is prone to inelastic deformation, so that the electrode patterns cannot meet the precision requirements.
[0006] However, this process and corresponding materials have obvious disadvantages: two layers of paste must be printed separately, one layer of black paste and one layer of silver paste, two printing and two drying processes respectively, and then one-time sintering, so that Forms electrodes with high conductivity
This process has the problem that the amount of material is too large, and large-scale equipment such as a printing machine and a drying oven must be added, which greatly increases the process of the front substrate glass, thus making the production cost high
Moreover, the sintering temperature of traditional BUS electrodes is 550-560°C. If it is lower than this temperature, the electrical conductivity will seriously drop.

Method used

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  • Electrode paste, electrode made from same, manufacturing methods thereof and PDP display screen provided with electrode
  • Electrode paste, electrode made from same, manufacturing methods thereof and PDP display screen provided with electrode
  • Electrode paste, electrode made from same, manufacturing methods thereof and PDP display screen provided with electrode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] High tap density spherical silver powder : The tap density reaches 4.2g / cm 3 , Spherical silver powder with a particle size of 1.5 microns. Based on the total weight of the conductive paste, the high tap density spherical silver powder is used in an amount of 59 wt%, that is, 590 grams.

[0032] Microcrystalline silver powder : The tap density reaches 1.8g / cm 3 , High crystallinity microcrystalline silver powder with a particle size of 0.4 microns. Based on the total weight of the conductive paste, the microcrystalline silver powder is used in an amount of 6 wt%, that is, 60 grams. Then the high tap density spherical silver powder and the microcrystalline silver powder are fully mixed in a mixer.

[0033] Black low melting point glass powder : Black glass pigment and low-melting glass powder are mixed according to the formula shown in Table 1 and smelted to obtain molten glass. After the glass liquid is cooled, it is processed into a black glass powder with a ...

Embodiment 2

[0042] Except using 52wt% (520 grams) with a tap density of 4.5g / cm 3 , The particle size is 1.8 micron high tap density spherical silver powder and the tap density of 13wt% (130 grams) is 2.0g / cm 3 , particle size is 0.6 micron high crystallinity microcrystalline silver powder and it is fully mixed, embodiment 2 is carried out in the same way as embodiment 1. The results are shown in Table 2.

Embodiment 3

[0044] Except using 48wt% (480 grams) with a tap density of 3.8g / cm 3 , The particle size is 1.2 micron high tap density spherical silver powder and the tap density of 13wt% (130 grams) is 1.6g / cm 3 , particle size is the high crystallinity microcrystalline silver powder of 0.6 and it is fully mixed, and the consumption of black low-melting point glass powder is 17wt%, embodiment 3 is carried out in the same way as embodiment 1. The results are shown in Table 2.

[0045] Table 2: Comparison between the conductive paste of the present invention and the traditional paste

[0046] parameter

[0047] As can be seen from Table 2, since the present invention adds high crystallinity microcrystalline silver powder to the high tap density spherical silver powder of the traditional method, it actually plays the role of fluxing silver powder. Therefore, the sintering temperature of the conductive paste of the present invention is 30-50° C. lower than 550-560° C. of the conven...

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Abstract

The invention provides electric paste and preparation method thereof. The electrode paste comprises silver powder, black glass paint, low melting point glass powder and organic matter ingredients, wherein the black low melting point glass powder comprises 5-20 percent of black glass paint and low melting point glass powder by weight; the silver powder comprises 40-70 percent of high tap density spherical silver powder and 5-10 percent of microcrystal silver powder by weight; and the organic matter ingredients comprises high molecular copolymer, photoinitiator, a solvent, a defoaming agent, a surfactant and a pH regulating agent, and the like. The invention also provides a photosensitive silver electrode made from the electrode paste, a manufacturing method thereof and a PDP display screen provided with the electrode. By using the electrode paste, the electrode with high electrical conductivity can be obtained only by using one layer of paste and carrying out once drying and sintering process.

Description

technical field [0001] The invention relates to an electrode paste and a preparation method thereof, more specifically, the invention relates to a photosensitive silver electrode paste used in a PDP display device and a preparation method thereof. The invention also relates to an electrode manufactured by using the electrode paste, a manufacturing method thereof and a PDP display screen with the electrode. Background technique [0002] In recent years, flat panel display technology has become increasingly mature. Large size, high definition and low power consumption are the development direction of flat panel displays. In particular, plasma flat panel displays have gradually become the mainstream of large-size flat panel displays due to their characteristics of high brightness, high contrast ratio, low cost, and ease of large-scale expansion. The plasma display is mainly composed of two glass substrates, the middle is filled with Penning gas, and there are red, green and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/02H01J17/49H01J17/04H01J11/12H01J11/22
CPCH01J9/02H01B1/22H01J2211/225H01B1/16H01J11/12H01J11/22
Inventor 王伟刘斌
Owner SICHUAN COC DISPLAY DEVICES
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