Array Substrate Pressure Sensor Placement for Narrow-Frame Displays
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Solution Overview
Problem
The existing touch pressure detecting technologies in display panels face challenges due to the large size of pressure sensors, which necessitate increased spacing between shift registers and scanning lines, leading to a larger non-display region and reduced detection accuracy.
Innovation Solution
The implementation of an array substrate with pressure sensors placed between adjacent shift registers in both sides of the display region, where scanning lines for one set of pressure sensors are connected to shift registers on the opposite side, reducing the distance between shift registers and the display boundary, thus minimizing the non-display region and enhancing detection accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pressure sensors are integrated into the display panel to detect touch pressure, then the applied range of touch technologies is improved, but the non-display region area increases due to the large size of pressure sensors requiring adjusted shift register positions
Solution Approach 1:
The patent divides the non-display region into two separate regions (first non-display region and second non-display region) located at opposite sides of the display region. Pressure sensors are distributed in both regions, allowing the system to maintain comprehensive pressure detection coverage while reducing the distance from shift registers to the display boundary, thus minimizing the overall non-display region area.
2Ease of manufacture
If the distance between the edge of the shift register close to the display region and the boundary between the display region and non-display region is increased to accommodate pressure sensors, then the pressure sensors can be properly positioned, but the area of the non-display region increases
Solution Approach 1:
The patent segments the pressure sensor arrangement by placing some pressure sensors in the first non-display region and other pressure sensors in the second non-display region. This segmentation allows each group of pressure sensors to be positioned closer to the display boundary without requiring a uniformly increased distance across the entire non-display region, thereby reducing the overall non-display region area while still accommodating all pressure sensors.
3Device complexity
If pressure sensors are placed between adjacent shift registers, then the arrangement is simplified, but the distance between shift registers and display boundary increases
Solution Approach 1:
The patent utilizes both sides (first side and second side) of the display region for placing pressure sensors in separate non-display regions. This dimensional expansion allows pressure sensors to be arranged between adjacent shift registers on both sides, simplifying the overall arrangement while preventing the distance from the display boundary from increasing on either side, as each side independently accommodates its own pressure sensors.
Data Source
AI summary
Provided are an array substrate, a display panel and a driving device. In the array substrate, a pressure sensor is disposed between adjacent two of the shift registers at either of the two sides of the display region; the scanning lines include a first set of scanning lines and a second set of scanning lines; the extending lines of the first set of scanning lines pass the pressure sensors in the first region, and the first set of scanning lines are electrically connected to the corresponding shift registers in the second region.