Cholesteric RGB Display Stack for Cross-Platform TFT Verification
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Solution Overview
Problem
Current display device manufacturers face high verification costs and resource wastage due to the need for separate verification masks for different display products, as TFT characteristics verification requires specific masks for LCD and OLED technologies.
Innovation Solution
A display device comprising three stacked layers of cholesteric liquid crystal cells with red, green, and blue layers, where electrode strips from different layers are connected in series and parallel, allowing verification of TFT characteristics without separate masks for each product.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If separate verification masks are designed and prepared for each display product (LCD, OLED), then TFT characteristics verification can be performed for each specific product, but verification costs increase and resources are wasted
Solution Approach 1:
The patent applies universality by designing a single verification mask structure that can verify TFT characteristics for multiple display product types (LCD, OLED, Min LED). The mask includes a color filter layer with red, green, and blue color filter regions that can work with different display technologies, eliminating the need to prepare separate verification masks for each product type while maintaining verification accuracy
Solution Approach 2:
The patent merges the verification functions for different display technologies into a single integrated verification mask. The color filter layer combines multiple color filter regions (red, green, blue) that can simultaneously serve as verification patterns for different display product types, consolidating multiple verification functions into one mask structure
2Measurement precision
If separate verification masks are designed and prepared for each display product, then specific TFT characteristics can be verified for each product type, but resource utilization decreases
Solution Approach 1:
The verification mask is designed with universal applicability across different display technologies. The color filter layer contains red, green, and blue color filter regions that can function as verification patterns for LCD, OLED, and Min LED displays, allowing one mask to serve multiple verification purposes instead of requiring separate masks for each technology
3Measurement precision
If multiple separate verification masks are used for different display products, then each product's TFT characteristics can be accurately verified, but device complexity increases
Solution Approach 1:
The patent merges multiple verification functions into a single verification mask structure. The color filter layer integrates red, green, and blue color filter regions that collectively serve as verification patterns for different display technologies, reducing the number of separate masks needed while maintaining verification accuracy through the combined functionality of the integrated structure
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
Reduces verification costs and saves resources by enabling TFT characteristic verification across different display technologies using a single device, facilitating efficient verification of thin film transistors in LCD and OLED panels.
Implementation Method 1
three layers of cholesteric liquid crystal cell, where each layer of cholesteric liquid crystal cell includes a cholesteric liquid crystal layer
Implementation Method 2
colors of the cholesteric liquid crystal layers in the three layers of cholesteric liquid crystal cell are red, green, and blue, respectively
Implementation Method 3
a first electrode layer and a second electrode layer arranged on two sides of the cholesteric liquid crystal layer respectively
Implementation Method 4
the first electrode strips from different first electrode layers are disposed one to one and electrically connected, and the second electrode strips from different second electrode layers are disposed one to one and connected in parallel
Data Source
AI summary
A display device including three sequentially stacked layers of cholesteric liquid crystal cell, where each layer of cholesteric liquid crystal cell includes a cholesteric liquid crystal layer and a first electrode layer and a second electrode layer arranged on two sides of the cholesteric liquid crystal layer respectively, the first electrode layer includes multiple first electrode strips, the second electrode layer includes multiple second electrode strip, along a thickness direction of the three layers of cholesteric liquid crystal cell, the first electrode strips from different first electrode layers are disposed one to one and electrically connected, and the second electrode strips from different second electrode layers are disposed one to one and connected in parallel; the display device further includes an array transistor layer, and each of the second electrode strips in the three layers of cholesteric liquid crystal cell is connected in series with the array transistor layer.