Reflective Touch Electrode Blocks for In-Cell Display Luminance
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Solution Overview
Problem
Current touch control display technologies face challenges in achieving high touch resolution and energy efficiency, as they often require separate components for touch detection and image display, and rely on external backlighting which consumes energy.
Innovation Solution
A touch control array substrate with a touch electrode layer comprising light-reflective touch electrode blocks that provide partial backlighting by reflecting ambient light, integrated with a liquid crystal display structure to enhance luminance and reduce energy consumption, while maintaining touch detection functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate components are used for touch detection and image display, then touch detection function is achieved, but device complexity and energy consumption increase
Solution Approach 1:
The patent combines touch detection electrodes and display pixel electrodes into a single integrated electrode structure. The touch electrode layer is merged with the pixel electrode layer, allowing the same electrode to serve both touch sensing and light modulation functions, thereby reducing component complexity while maintaining reliable touch detection
Solution Approach 2:
The electrode structure is designed to perform multiple functions simultaneously: it acts as both the touch sensing electrode for detecting finger contact and the pixel electrode for controlling light transmission in the liquid crystal display, eliminating the need for separate dedicated components
2Illumination intensity
If external backlighting is used, then image display is achieved, but energy consumption increases
Solution Approach 1:
The touch electrode blocks serve a dual purpose: they detect touch input and simultaneously function as reflective elements that provide backlighting for the display. By reflecting ambient light, the electrodes themselves contribute to the display luminance, reducing or eliminating the need for separate external backlighting components and associated energy consumption
3Measurement precision
If distance between adjacent conductive channels is reduced, then touch resolution is improved, but manufacturing precision requirements increase
Solution Approach 1:
The electrode structure is divided into discrete blocks arranged in a grid pattern, with each block serving as an independent sensing and display element. This segmentation allows for systematic reduction of block size and spacing to improve touch resolution while maintaining manufacturability through standardized fabrication processes
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 enhances touch resolution and energy efficiency by using light-reflective touch electrode blocks to provide partial backlighting, reducing the need for external backlighting and allowing for both touch detection and image display in a single, energy-efficient in-cell type touch control display apparatus.
Implementation Method 1
a touch electrode layer having a plurality of touch electrode blocks configured to detect a touch and configured to provide at least a portion of back light for image display in the touch control array substrate by reflecting ambient light
Data Source
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AI summary
Touch control array substrate and touch control display apparatus, wherein the touch control array substrate includes a touch electrode layer (100) having a plurality of touch electrode blocks (100b) configured to detect a touch and configured to provide at least a portion of back light for image display in the touch control array substrate by reflecting ambient light.