Display Panel Signal Layout for Under-Screen Camera Transmittance
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Solution Overview
Problem
Conventional electronic devices cannot achieve a full-screen display due to the integration of photosensitive components like front-facing cameras, as external light enters through notches or openings, limiting the screen-to-body ratio and restricting the transparent display area.
Innovation Solution
A display panel design with sub-pixels, a driving circuit, and signal lines where the signal line includes an extension segment, allowing for increased distance between the sub-pixel and driving circuit, reducing metal distribution and enhancing light transmittance, enabling under-screen integration of photosensitive components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If notching or opening is provided on the display screen to integrate photosensitive components, then the photosensitive components can be integrated, but the light transmittance and display area are reduced
Solution Approach 1:
The patent divides the display panel into multiple region segments along the second direction, with each region segment containing a specific number of sub-pixels and extension segments. This segmentation allows different regions to have different densities of metal materials, optimizing both light transmittance and component integration capability
Solution Approach 2:
The patent applies different arrangements of extension segments in different region segments. In region segments with fewer sub-pixels, more extension segments are arranged to increase light transmittance, while in region segments with more sub-pixels, fewer extension segments are arranged. This local differentiation optimizes the balance between display quality and light transmission
2Illumination intensity
If the distance between sub-pixel and driving circuit is increased to reduce metal material distribution, then light transmittance is improved, but the signal line length increases
Solution Approach 1:
The patent introduces extension segments that extend along the first direction (row direction) to connect sub-pixels to driving circuits located on the side. This dimensional extension allows the driving circuit to be positioned farther from the sub-pixel in the horizontal direction while maintaining manageable signal line lengths through vertical stacking and routing in the third dimension
3Stability of the object's composition
If more extension segments are arranged in region segments with fewer sub-pixels to improve uniformity, then the arrangement uniformity is improved, but the manufacturing complexity increases
Solution Approach 1:
The patent establishes specific parameter relationships between the numbers of sub-pixels and extension segments in different region segments. By controlling the ratio and distribution of these elements according to defined parameters, the patent achieves uniform arrangement while maintaining manufacturability through standardized design rules
Data Source
AI summary
A display panel and a display device. The display panel includes sub-pixels, a driving circuit for driving at least a part of the sub-pixels, and a signal line connecting the sub-pixel and the driving circuit, the driving circuit is located on a side of the sub-pixel in a first direction, the signal line includes an extension segment extending along the first direction, a plurality of extension segments of a plurality of signal lines are arranged side by side along a second direction, and the first direction intersects the second direction. The display panel includes a plurality of region segments arranged side by side along the second direction, the plurality of region segments include at least two adjacent first region segment and second region segment.