Touch Display Panel Integrating Color Filter Electrodes
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Solution Overview
Problem
Traditional touch display panels have complex structures due to the presence of color resin and multiple layers of electrodes, which complicates the manufacturing process and increases costs, while also requiring additional masks for production.
Innovation Solution
A touch display panel design that integrates color filter electrodes into the touch sensing film, eliminating the need for color resin on the color filter substrate by using intersecting strip-like electrodes with color filtering function, simplifying the structure and reducing the number of masks required during production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If color resin and multiple layers of electrodes are used in traditional touch display panels, then color filtering function and touch sensing function are achieved, but the structure becomes complex and manufacturing cost increases
Solution Approach 1:
The patent merges the color filter electrode and touch sensing electrode into a single integrated electrode structure. The first electrode serves dual purposes: it acts as a color filter electrode with color filtering function and simultaneously as a touch sensing electrode for capacitive touch detection. This eliminates the need for separate color resin layers and multiple electrode layers, significantly simplifying the overall structure while maintaining both color filtering and touch sensing functions
Solution Approach 2:
The first electrode is designed to perform multiple functions simultaneously: it provides color filtering through its material properties, serves as an electrode for touch sensing through its conductive properties, and acts as an induction electrode for capacitive touch detection. This multi-functional design eliminates the need for separate dedicated components for each function, reducing structural complexity
2Reliability
If color resin and multiple layers of electrodes are used in traditional touch display panels, then color filtering function and touch sensing function are achieved, but the number of masks required for production increases
Solution Approach 1:
The patent combines the formation of color filter electrodes and touch sensing electrodes into a single patterning process. By integrating both functions into one electrode layer, the manufacturing process requires fewer photomasks and fewer sequential deposition steps, thereby simplifying the manufacturing process and reducing production complexity
3Illumination intensity
If color resin is provided on the color filter substrate, then color display is achieved, but additional materials and processing steps are required
Solution Approach 1:
The patent extracts and eliminates the need for separate color resin materials by incorporating color filtering functionality directly into the electrode material itself. The first electrode is made of or coated with materials that provide both electrical conductivity and color filtering properties, thereby removing the requirement for additional color resin layers and reducing total material quantity
Solution Approach 2:
The electrode material is designed to serve dual purposes: providing electrical conductivity for touch sensing and providing color filtering capability through its optical properties. This eliminates the need for separate color resin materials, reducing both material quantity and processing steps while maintaining color display functionality
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 design simplifies the touch display panel structure, reduces production costs, and enhances competitiveness by combining the color filter and touch sensing functions, thereby streamlining the manufacturing process and eliminating the need for additional color resin.
Implementation Method 1
the first electrodes being color filter electrodes with color filtering function
Implementation Method 2
The capacitive touch display panel is operated by changing the capacitance between two layers of induction electrodes of the touch sensing film so as to produce a current
Data Source
AI summary
The disclosure of the present invention discloses a touch display panel. The touch display panel comprises a color filter substrate, an array substrate, a liquid crystal layer and a touch sensing film positioned at a side of the color filter substrate which is away from the liquid crystal layer, wherein the color filter substrate comprises a substrate and a black matrix provided with a plurality of opening areas which are in array distribution; the touch sensing film comprises a substrate, one side of the substrate is provided with a plurality of first electrodes, the other side surface of the substrate is provided with a plurality of second electrodes, the projections of the first electrodes and the second electrodes on the color filter substrate are intersected with each other, the first electrodes are color filter electrodes, and the projections on the color filter substrate are opposite to the opening areas.