Array Substrate Capacitor Layout for Higher Under-Screen Transmittance
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Solution Overview
Problem
The provision of film layers for pixel driving circuits in OLED display panels affects light transmittance, impacting the shooting effect and fingerprint recognition performance in under-screen camera and fingerprint recognition technologies.
Innovation Solution
The array substrate design includes a first connection pattern between second electrode plates of pixel driving circuits in the second conductive layer, with a reduced dimension in the second direction to enhance light transmittance and simplify manufacturing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If film layers are provided for pixel driving circuits, then power supply signal transmission is ensured, but light transmittance is reduced
Solution Approach 1:
The patent applies dimensionality change by reducing the connection pattern's dimension in the second direction (vertical dimension) while maintaining its function in the first direction (horizontal dimension). The first connection pattern extends primarily in the first direction with a reduced dimension in the second direction, allowing light to pass through more easily while still providing electrical connection between second electrode plates of adjacent pixel driving circuits.
Solution Approach 2:
The patent applies local quality by making the connection pattern's dimension anisotropic - different dimensions in different directions. The connection pattern has a large dimension in the first direction to ensure electrical connection but a reduced dimension in the second direction to improve light transmittance. This localized optimization allows the structure to simultaneously satisfy both electrical and optical requirements.
2Illumination intensity
If connection pattern dimension is reduced to enhance light transmittance, then under-screen camera performance is improved, but connection reliability may be compromised
Solution Approach 1:
The patent resolves this contradiction by redistributing the connection function across different dimensions. The first connection pattern maintains sufficient electrical connection by extending adequately in the first direction while minimizing its dimension in the second direction. This dimensional redistribution allows the pattern to provide reliable electrical connectivity without blocking light paths vertically.
Solution Approach 2:
The patent segments the connection function by separating the electrical connection path into multiple components: the first connection pattern provides horizontal connection in the first direction, while vertical connections are provided by second connection patterns between adjacent pixel driving circuit groups. This segmentation allows each connection pattern to be optimized for its specific function without compromising overall connection reliability.
Data Source
AI summary
An array substrate includes a substrate and a plurality of pixel driving circuit groups, which are arranged in an array in a first direction and a second direction. Each pixel driving circuit group includes two pixel driving circuits arranged in the first direction. The array substrate includes a first conductive layer and a second conductive layer. The pixel driving circuits each include a capacitor, which includes a first electrode plate located in the first conductive layer and a second electrode plate located in the second conductive layer. A first connection pattern is connected between second electrode plates of the two pixel driving circuits in the pixel driving circuit group, and is located in the second conductive layer. A dimension of the first connection pattern in the second direction is less than a dimension of the second electrode plate in the second direction.