Array Substrate Scan-Wire Sharing for High-PPI Light Transmittance
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Solution Overview
Problem
The increase in pixels per inch (PPI) in display panels reduces the area for light transmission, affecting overall transmittance, especially in designs with under-screen camera or optical fingerprint recognition features.
Innovation Solution
The array substrate design allows two driving units to share a first scan wire and a second scan wire, enabling semiconductor wiring segments to extend along a straight line and overlap with these wires to form switching transistors, thereby reducing space occupancy and improving light transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the pixels per inch (PPI) is increased to improve display resolution, then the display quality is improved, but the area for light transmission in the array substrate is reduced, thereby affecting overall transmittance
Solution Approach 1:
Two adjacent driving units share common scan wires (first scan wire and second scan wire), merging the wiring structure to reduce redundant elements. This allows the semiconductor wiring segments to extend linearly and overlap with the shared scan wires, forming switching transistors more efficiently and reducing the overall wiring space occupancy, thereby increasing light transmission area while maintaining high PPI
Solution Approach 2:
The first scan wire and second scan wire serve multiple functions by being shared between two adjacent driving units. These scan wires simultaneously control switching transistors in both driving units, reducing the total number of scan wires needed and increasing the light transmission area while maintaining high display resolution
2Measurement precision
If wiring density is increased to support higher PPI, then display resolution is improved, but the area for light transmission is reduced
Solution Approach 1:
Adjacent driving units share common scan wires, merging the wiring structure to reduce redundant elements. This allows semiconductor wiring segments to extend linearly and overlap with shared scan wires, forming switching transistors more efficiently and reducing overall wiring space occupancy, thereby increasing light transmission area while maintaining high PPI
Solution Approach 2:
The semiconductor wiring segment extends in a first direction and overlaps with scan wires extending in a second direction (intersecting direction). This multi-dimensional arrangement allows more efficient space utilization, reducing wiring area while maintaining connectivity for high PPI displays
Data Source
AI summary
Disclosed are an array substrate, a display panel, and an electronic device. Two driving units, adjacent in a first direction, in the array substrate are configured to share a first scan wire and a second scan wire, so that a semiconductor wiring segment in a driving unit may extend along a straight line and overlap with the first scan wire and the second scan wire to form a first switching transistor and a second switching transistor respectively, thereby reducing a space occupied by the semiconductor wiring segment.