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

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 screenprovided 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...

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.

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