Display Panel Connection Layers to Reduce Under-Screen Camera Diffraction
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Solution Overview
Problem
The integration of an under-screen camera in a display panel results in reduced pixel density and increased electrical connection elements, leading to diffraction, glare, and low screen transmittance, which negatively impact imaging quality.
Innovation Solution
A display panel design with a first and second pixel region, where the second region has lower pixel density for the camera, featuring electrical connection structures between sub-pixels in different layers, including a first, second, and third electrical connection layer to minimize gaps and improve light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixel density is reduced in the camera area to enable under-screen camera integration, then camera function can be achieved, but imaging quality deteriorates due to diffraction and glare
Solution Approach 1:
The patent applies local quality by creating different pixel density zones within the display panel. The first pixel region maintains high pixel density for normal display areas, while the second pixel region has reduced pixel density specifically where the under-screen camera is located. This localized differentiation allows the camera to function without compromising the overall display quality in non-camera areas.
Solution Approach 2:
The patent addresses the diffraction and glare problems by introducing multiple electrical connection layers (first, second, and third electrical connection layers) stacked in different dimensions. This vertical stacking approach allows electrical connections to pass through gaps in previous layers, reducing light leakage and diffraction effects that would otherwise occur with planar connections alone.
2Adaptability or versatility
If electrical connection elements are increased to support lower pixel density area, then camera region can be formed, but screen transmittance decreases due to more connection elements
Solution Approach 1:
The patent introduces electrical connection elements distributed across multiple stacked layers (first, second, and third electrical connection layers). This vertical arrangement allows connection elements to be distributed in the depth dimension rather than spreading them out in the planar dimension, thereby reducing their cumulative blockage of light paths and improving screen transmittance while still providing adequate electrical connections for the camera region.
Solution Approach 2:
The patent creates a porous-like structure by allowing gaps between electrical connection elements in one layer to be filled or bridged by connection elements in subsequent layers. This stacked configuration creates effective electrical pathways while maintaining optical pathways, as light can pass through the gaps between elements in any given layer without being blocked by elements in other layers.
3Adaptability or versatility
If pixel density is reduced in the second pixel region, then under-screen camera can be integrated, but manufacturing complexity increases due to multi-layer electrical connections
Solution Approach 1:
The patent segments the electrical connection function across multiple independent layers, with each layer containing specific electrical connection elements that connect to particular signal line patterns. This segmentation allows each layer to be designed and manufactured with focused functionality, and the layers can be stacked and connected through standardized interfaces, making the complex multi-layer structure more manageable and manufacturable.
Solution Approach 2:
The patent designs the electrical connection elements and signal line patterns to serve multiple functions. The same electrical connection layers and elements are used to connect both display pixel circuits and camera-related circuits, as well as to provide power, ground, and signal pathways. This multi-functionality reduces the need for separate dedicated connection structures, thereby reducing overall manufacturing complexity despite the multi-layer architecture.
Data Source
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AI summary
A display panel and a display device are provided. In a second pixel region of the display panel, there is a first gap between first (71) and second (72) electrical connection elements in a first electrical connection layer, there is a second gap between third (73) and fourth (74) electrical connection elements in a second electrical connection layer, a third electrical connection layer (75) is coupled to a fifth signal line pattern (85) included in each sub-pixel of a corresponding sub-pixel group. The fifth signal line pattern (85) is used to transmit a fifth signal with a fixed electrical potential, and an orthographic projection of the third electrical connection layer (75) onto a substrate of the display panel covers at least part of an orthographic projection of the second gap onto the substrate.