Touch Panel Color Filter Insulating Layer Process Simplification
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Solution Overview
Problem
The manufacturing process for capacitive touch panels using organic film insulating layers is complex and costly, leading to reduced product yield and increased production costs.
Innovation Solution
Replacing the organic film layer with a color resistor layer as the insulating layer to simplify the manufacturing process and reduce costs, while maintaining the functionality of the touch panel.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an organic film layer is used as the insulating layer, then the insulating function is achieved, but the manufacturing process becomes complex and costly
Solution Approach 1:
The patent combines the insulating layer and color filter layer into a single integrated layer. The color filter layer serves dual purposes: filtering light for display purposes and providing electrical insulation between the anode and cathode. This eliminates the need for a separate organic insulating film, thereby simplifying the manufacturing process while maintaining both insulating and color filtering functions.
Solution Approach 2:
The color filter layer is designed to perform multiple functions simultaneously: it acts as both the color filter for the display and the insulating layer. By making the color filter layer sufficiently thick and using appropriate materials with high resistivity, it fulfills the insulation requirement while maintaining its primary color filtering function, thus eliminating the need for additional dedicated insulating layers.
2Reliability
If an organic film layer is used as the insulating layer, then insulation is provided, but production costs increase
Solution Approach 1:
The patent merges the insulating layer and color filter layer into a single integrated structure. The color filter layer, which is already part of the display structure, is designed to provide both color filtering and electrical insulation. This integration eliminates the need for separate organic insulating film materials and their associated coating processes, thereby reducing material costs and production expenses.
Solution Approach 2:
The patent uses the color filter layer, which is already a necessary component of the display, to also serve as the insulating layer. This approach eliminates the need for additional expensive organic insulating materials and their complex coating processes, thereby reducing overall production costs while maintaining the required insulating function.
3Reliability
If an organic film layer is used as the insulating layer, then insulation is achieved, but product yield decreases
Solution Approach 1:
The patent combines the insulating layer and color filter layer into a single integrated layer. Since the color filter layer is already part of the standard display manufacturing process, integrating the insulating function into it eliminates the need for additional organic film coating steps. This reduction in process steps directly improves product yield by eliminating potential failure points associated with organic film coating and reducing overall manufacturing complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach eliminates the risks associated with organic film coating, simplifies the manufacturing process, and reduces production costs by using the color resistor layer to insulate sensing and driving electrodes effectively.
Implementation Method 1
a color resistance insulating layer disposed after the conductive layer, wherein the color resistance insulating layer in the metal bridging region insulates the metal bridging layer from the conductive layer
Data Source
Figure 1~2(a)
Figure 2(b)~2(c)
Figure 2(d)~2(f)
AI summary
The present invention provides a touch panel integrated in a color filter substrate and a touch display device, the touch panel integrated in a color filter substrate includes: a transparent substrate; a conductive layer disposed on the transparent substrate, where the conductive layer includes a plurality of first conductive patterns and a plurality of second conductive patterns intersecting with the plurality of first conductive patterns, and each of the second conductive patterns is separated into multiple segments by the plurality of first conductive patterns; a color filter insulating layer disposed on the conductive layer, where the color filter insulating layer includes a plurality of through-holes; and a metal bridging layer disposed on the color filter insulating layer, where the multiple segments of the second conductive pattern are connected together by the metal bridging layer via the through-holes. With the technical solutions of the present invention, the color resist is used as the insulating layer to replace the existing organic film layer, thus avoiding the undesirable risk brought about by the manufacturing process for coating the organic film, simplifying the manufacturing process and reducing the production costs.