Array Substrate Pressure Sensor Placement in Shift Registers
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Solution Overview
Problem
The existing display panels face an issue with increased non-display region area due to the large size of pressure sensors, which hinders the development of narrow-frame designs, as the position adjustment of shift registers is required to accommodate the sensors, leading to misalignment and increased distance between the display and non-display regions.
Innovation Solution
The proposed solution involves an array substrate with a pressure sensor formed by resistors disposed inside the shift registers, allowing the shift registers to maintain their position without adjustment, thereby reducing the non-display region area by optimizing the placement and extension lengths of the resistors within the shift registers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If the pressure sensor size is reduced, then the non-display region area decreases, but the measurement precision deteriorates
Solution Approach 1:
The patent combines the pressure sensor with the shift register structure, placing the pressure sensing elements within or adjacent to the shift register region. This merging allows the pressure sensor to share space with existing circuitry rather than occupying additional non-display region area, thereby reducing the overall non-display region while maintaining adequate pressure detection capability through the integrated design
Solution Approach 2:
The patent transitions from a conventional planar pressure sensor layout to a three-dimensional integrated structure where the pressure sensing elements are positioned in multiple layers or at different vertical positions relative to the shift register. This dimensional change enables more efficient space utilization, allowing pressure detection functionality to be achieved within a smaller footprint area while maintaining measurement precision through the enhanced spatial configuration
2Adaptability or versatility
If the shift register position is adjusted to accommodate the pressure sensor, then the pressure sensor can be integrated, but the distance between the shift register edge and display region boundary increases
Solution Approach 1:
The patent merges the pressure sensor integration with the shift register positioning strategy, where the shift register is positioned to naturally accommodate the pressure sensor without requiring additional spacing. The pressure sensor is placed within the shift register's inherent structural footprint or in immediate proximity that does not increase the boundary distance, achieving both integration and maintained alignment
Solution Approach 2:
Instead of positioning the shift register and then adding space for the pressure sensor, the patent inverts the approach by first determining the optimal pressure sensor location and then configuring the shift register position to accommodate it. This reverse design strategy ensures that the shift register edge remains properly aligned with the display region boundary while still allowing pressure sensor integration
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 configuration effectively decreases the non-display region area, aligns signal output terminals with scanning lines, and conforms to narrow-frame design trends by minimizing the distance between the edge of the shift register and the display region boundary, thus enhancing the display panel's design efficiency.
Implementation Method 1
the at least one pressure sensor includes a first resistor, a second resistor, a third resistor and a fourth resistor, and a bridge structure is formed by the first resistor, the second resistor, the third resistor and the fourth resistor
Data Source
AI summary
Provided are an array substrate, a display panel and a display device, and the array substrate includes: at least one pressure sensor disposed in the non-display region; and the pressure sensor includes a first resistor, a second resistor, a third resistor and a fourth resistor; and a plurality of shift registers disposed in the non-display region, and the first resistor, the second resistor, the third resistor and the fourth resistor are disposed at least one of following positions: inside the shift register, between adjacent two of the plurality of shift registers, at a side of the plurality of shift registers close to the display region, and at a side of the plurality of shift registers away from the display region.