Touch Electrode Light-Shield Code Pattern for Coordinate Generation
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Solution Overview
Problem
Existing display devices face challenges in generating accurate input coordinate data without complex calculations and corrections, especially when used with touch input devices, which can increase costs, power consumption, and complexity in the driving process.
Innovation Solution
A display device incorporating a display layer with light emission areas, touch electrodes, a light-shield, and a code pattern, where the code pattern is determined by the planar shape of the light-shield to provide position information, allowing for the generation of coordinate data without complex calculations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If complex calculation and correction methods are used to generate accurate input coordinate data, then measurement precision is improved, but device complexity and power consumption increase
Solution Approach 1:
The light-shield is pre-configured with specific planar shapes (e.g., circular, square, rectangular) that directly correspond to position information. This preliminary design eliminates the need for complex post-processing calculations, as the coordinate data can be directly derived from the known geometric properties of the light-shield patterns.
Solution Approach 2:
The patent uses the planar shape of the light-shield as a direct template for position information encoding. Instead of using complex calculations to determine coordinates, the system copies positional data directly from the geometric characteristics of the light-shield pattern, simplifying the overall process.
2Measurement precision
If complex calculation and correction methods are used to generate accurate input coordinate data, then measurement precision is improved, but power consumption increases
Solution Approach 1:
Position information is pre-encoded into the light-shield's planar shape design. This eliminates the need for power-intensive real-time calculations, as the coordinate data can be directly obtained from the known geometric configuration of the light-shield patterns during touch input processing.
3Measurement precision
If complex calculation and correction methods are used to generate accurate input coordinate data, then measurement precision is improved, but the driving process becomes more complex
Solution Approach 1:
The light-shield patterns are pre-designed with specific planar shapes that directly represent position information. This preliminary configuration simplifies the driving process, as the system only needs to identify which light-shield pattern is present and extract coordinates from its known geometric properties, rather than performing complex real-time calculations.
4Device complexity
If light-shield is used to create code pattern for position information, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The patent uses variations in the planar shape (form/geometry) of the light-shield to encode different position information, similar to how different colors or patterns can convey different data. This approach allows for simplified device architecture while maintaining manufacturing feasibility through standard photolithographic processes used in display manufacturing.
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 solution enables accurate and efficient generation of input coordinate data, reducing costs, power consumption, and simplifying the driving process, while allowing the display device to be applied to various electronic devices with touch functions without size restrictions.
Implementation Method 1
The light-shield absorbs light of a specific wavelength, and another portion of the touch electrodes, which is not overlapped with (or not covered by) the light-shield, reflects light of the specific wavelength.
Implementation Method 2
another portion of the touch electrodes, which is not overlapped with (or not covered by) the light-shield, reflects light of the specific wavelength.
Data Source
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AI summary
A display device includes a display layer, a plurality of touch electrodes (SEN), a light-shield, and a code pattern (CP). The display layer includes a plurality of light emission areas (EA1, EA2, EA3) for emitting light. The plurality of touch electrodes (SEN) are disposed on the display layer to sense a touch and surround the plurality of light emission areas (EA1, EA2, EA3). The light-shield is disposed on a portion of the plurality of touch electrodes (SEN). The code pattern (CP) is determined by a planar shape of the light-shield to have position information. The light-shield absorbs light of a specific wavelength, and another portion of the touch electrodes (SEN), which is not overlapped with the light-shield, reflects light of the specific wavelength.