Color Filter Touch Substrate Light Shielding Insulation
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Solution Overview
Problem
Conventional color filter touch sensing substrates face challenges with small touch sensing areas and reduced touch signals due to the use of Chromium black matrices, which also complicate the manufacturing process and increase thickness.
Innovation Solution
A color filter touch sensing substrate is developed with a light shielding pattern layer that separates bridge lines, eliminating the need for a Chromium black matrix and simplifying the manufacturing process by using a light shielding pattern layer as an insulation structure between bridge lines, and integrating touch sensors into the color filter substrate structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a Chromium black matrix is used as the touch sensor, then the manufacturing process is simplified, but the touch sensing area becomes far smaller and touch signals are greatly reduced
Solution Approach 1:
The patent merges the light shielding function and insulation function into a single light shielding pattern layer, eliminating the need for separate Chromium black matrix and insulation layers. This combined structure maintains manufacturing simplicity while providing sufficient touch sensing area and signal strength.
Solution Approach 2:
The patent extracts the insulation function from the Chromium black matrix by introducing a separate light shielding pattern layer, allowing the touch sensor to use a different material that provides both light shielding and adequate sensing area without requiring the Chromium layer for insulation purposes.
2Ease of manufacture
If a Chromium black matrix is used as the touch sensor, then the manufacturing process is simplified, but additional light shielding layers are required on borders increasing complexity
Solution Approach 1:
The patent combines the light shielding function and insulation function into a single light shielding pattern layer, eliminating the need for separate Chromium black matrix and insulation layers. This merged structure reduces manufacturing complexity while maintaining all necessary functions.
3Ease of manufacture
If the touch sensor is integrated into the color filter substrate structure, then assembly is simplified, but the overall thickness increases
Solution Approach 1:
The patent integrates the touch sensor, light shielding layer, and color filter into a single multi-functional substrate structure. This merging eliminates the need for separate assembly steps and reduces overall panel thickness by removing redundant layers while maintaining all necessary functions.
4Reliability
If a light shielding pattern layer is introduced to separate bridge lines, then insulation between bridge lines is improved, but the manufacturing process becomes more complex
Solution Approach 1:
The patent combines the light shielding function and insulation function into a single light shielding pattern layer. This layer simultaneously provides electrical insulation between bridge lines and light shielding for the display, achieving both goals without adding manufacturing complexity.
Solution Approach 2:
The light shielding pattern layer serves multiple functions: it provides electrical insulation between bridge lines, shields light for display quality, and eliminates the need for separate insulation layers. This multi-functionality improves reliability without complicating the manufacturing process.
Data Source
AI summary
A manufacturing method of a color filter touch sensing substrate is provided. Firstly, a first film is formed on a substrate. The first film includes a plurality of first and second touch sensors and a plurality of first bridge lines for electrically connecting the first touch sensors in the same column. Then, a second film is formed on the substrate. The second film includes a plurality of second bridge lines for electrically connecting the second touch sensors in the same row. Next, a light shielding pattern layer is formed between the first and the second films. The light shielding pattern layer is used to define a plurality of sub-pixel regions on the substrate. Afterward, a plurality of color filter pattern layers is formed in the sub-pixel regions. Furthermore, a color filter touch sensing substrate, a display panel and manufacturing methods thereof are also provided.