Yellow light process silver paste and its preparation method and touch screen
A technology of yellow light process and silver paste, which is applied in cable/conductor manufacturing, input/output process of data processing, instruments, etc. It can solve the problem of low adhesion of silver paste in yellow light process and achieve excellent adhesion
Active Publication Date: 2016-10-05
GUANGZHOU QIANSHUN IND MATERIAL +1
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AI Technical Summary
Problems solved by technology
[0003] The invention solves the technical problem of the low adhesion of the silver paste of the yellow light process on the ITO cover plate in the prior art
Method used
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Experimental program
Comparison scheme
Effect test
preparation example Construction
[0024] The preparation method of the above-mentioned yellow light process silver paste, comprises the following steps:
[0025] S10. Silver powder treatment: after the nano conductive carbon particles are uniformly dispersed in part of the solvent, nano silver is added and heated to 10%-60% of the solvent to volatilize;
[0026] S20. Polymer resin treatment: add polymer resin and remaining solvent, heat to dissolve fully, filter impurities or insoluble matter;
[0027] S30. Preparation of silver paste: the treated silver powder and polymer resin are ground to a fineness of 1-5 microns in a three-roller machine to obtain a silver paste in a yellow light process.
[0028] Through the heating procedure in the step S10, the nano-conductive carbon particles are more easily adsorbed on the silver powder, which is beneficial to the dispersion in the subsequent steps. Filtering impurities is more conducive to resin bonding. The fineness of grinding is related to dispersibility, and ...
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The invention relates to a yellow light manufacturing process silver paste. The yellow light manufacturing process silver paste comprises silver powder, macromolecule resin, a solvent and nanometer conductive carbon particles, wherein the weight of the silver powder in the nanometer conductive carbon particles is 0.001-0.1%. The invention also relates to a preparation method of the yellow light manufacturing process silver paste. The preparation method comprises the following steps: silver powder treatment: after the nanometer conductive carbon particles are uniformly dispersed in partial solvent, adding nano-silver, and heating until 10%-60% of solvent is evaporated; macromolecule resin treatment: adding macromolecule resin and the remaining solvent, heating sufficiently for dissolution, and filtering impurities or insoluble substances; silver paste preparation: grinding the silver powder and the macromolecule resin after being treated in a three-roller machine until the fineness is 1-8 microns so as to obtain the yellow light manufacturing process silver paste. The invention also relates to a touch screen, wherein the touch screen comprises a conducting circuit in a non-visual region, and the conducting circuit is obtained through the yellow light manufacturing process silver paste in a yellow light manufacturing process. According to the yellow light manufacturing process silver paste provided by the invention, the dispersibility of the system is strengthened by adding a small amount of conductive carbon particles, and the volume resistivity is further reduced.
Description
technical field [0001] The invention relates to a silver paste, in particular, to a yellow light process silver paste, and also relates to a preparation method of the yellow light process silver paste and a touch screen. Background technique [0002] The yellow light process of touch screen is a common process. The yellow light process mainly relies on lithography technology. The lithography technology is to first transfer the main pattern on the photomask to the photosensitive material, and use light to pass through the photomask to irradiate the photosensitive material. Then, soak in solvent to dissolve or retain the part of the photosensitive material irradiated by light, so that the photoresist pattern formed will be identical or complementary to the photomask. Since the environment of the lithography process is illuminated by yellow light instead of the red light of a general photography darkroom, this part of the process is often referred to as "yellow light". The lit...
Claims
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IPC IPC(8): H01B1/22H01B13/00G06F3/041
Inventor 田耕刘洪
Owner GUANGZHOU QIANSHUN IND MATERIAL