Electrophoretic Display Color Filter Electrode Patterns
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Solution Overview
Problem
Conventional electrophoretic display apparatuses with touch control functions require a driving array substrate, increasing fabrication costs due to the need for both a driving array substrate and a touch device layer.
Innovation Solution
An electrophoretic display apparatus design that eliminates the need for a driving array substrate by using a color filter layer, a common electrode layer, and electrode patterns on a flexible substrate, allowing for colorful handwriting functionality at a lower cost, with the electrode patterns receiving different voltages to control the display media.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a driving array substrate and touch device layer are used to achieve touch control function, then the electrophoretic display apparatus can provide feedback and touch control capability, but the fabrication cost increases significantly
Solution Approach 1:
The patent extracts and removes the driving array substrate from the conventional electrophoretic display structure. Instead of using a complex driving array substrate with touch device layer, the invention uses a simple substrate with electrode patterns and color filter layer that can achieve both display and touch control functions, thereby significantly reducing fabrication cost while maintaining adaptability
Solution Approach 2:
The patent makes the color filter layer serve multiple functions: it not only provides color filtering for display but also acts as an electrode layer for touch control detection. This multi-functional design eliminates the need for separate touch device layer and driving array substrate, reducing fabrication cost while maintaining touch control capability
2Ease of manufacture
If a color filter film is employed on the electrophoretic display film to achieve colorful display effect, then the display can present colors through ambient light reflection, but the structure becomes more complex requiring additional layers
Solution Approach 1:
The patent merges the color filter layer and electrode layer into a single integrated structure. The color filter patterns are formed on the substrate to serve as both color filtering elements and electrode patterns, eliminating the need for separate touch device layer and reducing structural complexity while maintaining colorful display capability
Solution Approach 2:
The color filter layer is designed to perform dual functions: optical filtering for color display and electrical conduction for touch control. By making the color filter layer itself conductive or integrating it with electrode patterns, the patent reduces the number of required layers while achieving both colorful display and touch control functions
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
The solution reduces fabrication costs and enables colorful handwriting without a conventional driving array substrate, allowing the electrophoretic display apparatus to maintain colorful display effects and re-write functionality without a special writing pen, providing convenience and cost-effectiveness.
Implementation Method 1
an electrophoretic display film adhered onto the driving array substrate and includes a flexible substrate and a plurality of display media, wherein each of the display media includes an electrophoretic liquid
Implementation Method 2
the white charged particles in the electrophoretic liquid reflect the ambient light and the reflective light penetrate the color filter film so as to present the colorful effect
Implementation Method 3
a color filter layer, wherein the color filter layer is disposed on the substrate and at least includes a plurality of first color filter patterns and a plurality of second color filter patterns
Data Source
AI summary
An electrophoretic display apparatus includes a substrate, a color filter layer, an electrophoretic display film, a common electrode layer, multiple electrode patterns and multiple spacers. The color filter layer is disposed on the substrate and at least includes multiple first color filter patterns and second color filter patterns. The electrophoretic display film is disposed between the substrate and the color filter layer and includes a flexible substrate and multiple display media. The first and second color filter patterns are respectively corresponding to the display media. The electrode patterns at least include multiple first electrode patterns and second electrode patterns. The first electrode patterns receive a first voltage and are disposed respectively correspondingly to the first color filter patterns, while the second electrode patterns receive a second voltage and are disposed respectively correspondingly to the second color filter patterns. The spacers are disposed between the display media and the substrate.