METHOD OF FORMING A COLOR FILTER TOUCH SENSING SUBSTRATE
First Claim
1. A method of forming a color filter touch sensing substrate, the color filter touch sensing substrate being disposed corresponding to a thin film transistor substrate, and a display medium layer being disposed between the color filter touch sensing substrate and the thin film transistor substrate, the method comprising:
- providing a transparent substrate;
forming a first transparent conductive layer and an assistant electrode layer sequentially on a side of the transparent substrate facing the thin film transistor substrate;
patterning the first transparent conductive layer and the assistant electrode layer, wherein the first transparent conductive layer after patterning forms at least two first transparent sensing pads and at least two second transparent sensing pads, the assistant electrode layer after patterning forms at least two first patterned assistant electrodes and at least two second patterned assistant electrodes, the at least two first transparent sensing pads are electrically isolated from the at least two second transparent sensing pads, and the at least two first patterned assistant electrodes are electrically connected to and contact with the at least two first transparent sensing pads, the least two second patterned assistant electrodes are electrically connected to and contact with the at least two second transparent sensing pads, and the at least two first patterned assistant electrodes are electrically isolated from the at least two second patterned assistant electrodes; and
forming a black matrix on the side of the transparent substrate facing the thin film transistor substrate to cover the at least two first transparent sensing pads partially, the at least two second transparent sensing pads partially, the at least two first patterned assistant electrodes partially, the at least two second patterned assistant electrodes partially, and the transparent substrate partially, wherein the black matrix is formed by insulating materials.
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Abstract
A method of forming a color filter touch sensing substrate integrates touch-sensing structures/elements of a touch panel into the inner side of the color filter substrate, which faces a thin film transistor substrate, and forms patterned assistant electrodes on the surfaces of the transparent sensing pads for decreasing the equivalent resistance of the touch-sensing structures/elements. Moreover, since an adjacent transparent conductive layer and an assistant electrode layer are patterned to form the transparent sensing pads and the patterned assistant electrodes, a simplified pattern-transferring process can be applied to the transparent sensing pads and the patterned assistant electrodes, or bridge structures can be formed from the assistant electrode layer for electrically connecting between some transparent sensing pads. Therefore, the forming process is simplified.
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Citations
20 Claims
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1. A method of forming a color filter touch sensing substrate, the color filter touch sensing substrate being disposed corresponding to a thin film transistor substrate, and a display medium layer being disposed between the color filter touch sensing substrate and the thin film transistor substrate, the method comprising:
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providing a transparent substrate; forming a first transparent conductive layer and an assistant electrode layer sequentially on a side of the transparent substrate facing the thin film transistor substrate; patterning the first transparent conductive layer and the assistant electrode layer, wherein the first transparent conductive layer after patterning forms at least two first transparent sensing pads and at least two second transparent sensing pads, the assistant electrode layer after patterning forms at least two first patterned assistant electrodes and at least two second patterned assistant electrodes, the at least two first transparent sensing pads are electrically isolated from the at least two second transparent sensing pads, and the at least two first patterned assistant electrodes are electrically connected to and contact with the at least two first transparent sensing pads, the least two second patterned assistant electrodes are electrically connected to and contact with the at least two second transparent sensing pads, and the at least two first patterned assistant electrodes are electrically isolated from the at least two second patterned assistant electrodes; and forming a black matrix on the side of the transparent substrate facing the thin film transistor substrate to cover the at least two first transparent sensing pads partially, the at least two second transparent sensing pads partially, the at least two first patterned assistant electrodes partially, the at least two second patterned assistant electrodes partially, and the transparent substrate partially, wherein the black matrix is formed by insulating materials. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of forming a color filter touch sensing substrate, the color filter touch sensing substrate being disposed corresponding to a thin film transistor substrate, and a display medium layer being disposed between the color filter touch sensing substrate and the thin film transistor substrate, the method comprising:
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providing a transparent substrate; forming a black matrix on a side of the transparent substrate facing the thin film transistor substrate, wherein the black matrix is formed by insulating materials; forming at least two first patterned assistant electrodes and at least two second patterned assistant electrodes on the side of the transparent substrate facing the thin film transistor substrate, the at least two first patterned assistant electrodes and the at least two second patterned assistant electrodes being disposed corresponding to part of the black matrix respectively, and the at least two first patterned assistant electrodes being electrically isolated from the at least two second patterned assistant electrodes; forming a first transparent conductive layer on the side of the transparent substrate facing the thin film transistor substrate to cover the at least two first patterned assistant electrodes, at least two second patterned assistant electrodes, the black matrix, and part of the transparent substrate; patterning the first transparent conductive layer to form at least two first transparent sensing pads, at least two second transparent sensing pads and at least one first bridge structure, the at least one first bridge structure electrically connecting to the at least two first transparent sensing pads, the at least two first transparent sensing pads being disposed on the at least two first patterned assistant electrodes and on the black matrix under the at least two first patterned assistant electrodes, the at least two second transparent sensing pads being disposed on the at least two second patterned assistant electrodes and on the black matrix under the at least two second patterned assistant electrodes, and the at least two first transparent sensing pads being electrically isolated from the at least two second transparent sensing pads; and forming at least one second bridge structure electrically connecting to the at least two second transparent sensing pads, wherein the at least one second bridge is electrically isolated from the at least one first bridge structure. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method of forming a color filter touch sensing substrate, the color filter touch sensing substrate being disposed corresponding to a thin film transistor substrate, and a display medium layer being disposed between the color filter touch sensing substrate and the thin film transistor substrate, the method comprising:
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providing a transparent substrate; forming a black matrix on a side of the transparent substrate facing the thin film transistor substrate, wherein the black matrix is formed by insulating materials; forming an assistant electrode layer on the side of the transparent substrate facing the thin film transistor substrate to cover the transparent substrate and the black matrix; patterning the assistant electrode layer to form at least two first patterned assistant electrodes, at least two second patterned assistant electrodes and at least one first bridge structure, the at least two first patterned assistant electrodes and the at least two second patterned assistant electrodes being disposed corresponding to part of the black matrix respectively, and the at least two first patterned assistant electrodes being electrically isolated from the at least two second patterned assistant electrodes; forming a first transparent conductive layer on the side of the transparent substrate facing the thin film transistor substrate to cover the at least two first patterned assistant electrodes, the at least two second patterned assistant electrodes and the black matrix, and part of the transparent substrate; and patterning the first transparent conductive layer to form at least two first transparent sensing pads and at least two second transparent sensing pads and at least one second bridge structure, the at least one first bridge structure electrically connecting to the at least two first transparent sensing pads, the at least one second bridge structure electrically connecting to the at least two second transparent sensing pads, the at least one second bridge structure being electrically isolated from the at least one first bridge structure, the at least two first transparent sensing pads being disposed on the at least two first patterned assistant electrodes and on the black matrix under the at least two first patterned assistant electrodes, the at least two second transparent sensing pads being disposed on the at least two second patterned assistant electrodes and on the black matrix under the at least two second patterned assistant electrodes, and the at least two first transparent sensing pads being electrically isolated from the at least two second transparent sensing pads. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification