Display Panel Camera Region Light Transmittance Optimization
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Solution Overview
Problem
Existing full-screen display products face issues of uneven brightness and a too small camera region due to the use of under-screen cameras, which are limited by low Pixels Per Inch (PPI) and inefficient light transmittance optimization.
Innovation Solution
A display panel design with a first region for the camera, a second region for normal display, and a transition region, where light transmittance is optimized by arranging first light-emitting elements without pixel circuitries, and using conductive lines that extend along pixel circuitries to prevent parasitic capacitance and uneven brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If under-screen camera is adopted with decreased PPI at camera region, then light transmittance is improved and imaging quality is enhanced, but brightness uniformity deteriorates and camera region size is limited
Solution Approach 1:
The patent applies local quality by differentiating the structure between camera region and non-camera region. In the camera region, pixel circuitries are removed to enhance light transmittance, while in non-camera regions, complete pixel structures are maintained for normal display function. This localized structural differentiation resolves the contradiction between improving light transmittance at the camera region and maintaining overall brightness uniformity.
Solution Approach 2:
The display panel is segmented into distinct regions: camera region with only light-emitting elements, transition region with mixed structures, and non-camera region with complete pixel structures. This segmentation allows each region to be optimized independently, enabling high light transmittance in the camera region while maintaining brightness uniformity across the entire display through gradual transition zones.
2Area of stationary object
If pixel circuitries are removed at camera region to increase light transmittance, then camera region size can be enlarged, but parasitic capacitance effects and brightness non-uniformity occur
Solution Approach 1:
The patent extracts and removes pixel circuitries from the camera region, retaining only the light-emitting elements. This extraction eliminates the parasitic capacitance generated by pixel circuitries, allowing for larger camera region size and improved light transmittance without the harmful electromagnetic interference that would otherwise be present.
Solution Approach 2:
A transition region is introduced as an intermediary zone between the camera region and non-camera region. This transition region contains a gradual mix of structures that mediates the abrupt change, preventing parasitic capacitance effects from propagating into the camera region while maintaining smooth brightness transitions across the display surface.
3Object-generated harmful factors
If conductive lines are extended along pixel circuitries, then parasitic capacitance is prevented, but device complexity increases
Solution Approach 1:
The patent merges the conductive lines with the pixel circuitry layout, arranging conductive lines to extend along the pixel circuitries in the transition region. This merging approach prevents parasitic capacitance by ensuring proper electrical isolation and signal routing, while the conductive lines follow existing structural pathways rather than creating entirely new complex routing patterns.
Data Source
AI summary
The present disclosure provides a display panel and a display device. The display panel includes: a base substrate, a display region including a first region, a second region and a transition region; first light-emitting elements at the first region; second light-emitting elements, first pixel circuitries and second pixel circuitries at the transition region, each first pixel circuitry being arranged between adjacent second pixel circuitries, an orthogonal projection of at least one second pixel circuitry onto the base substrate at least partially overlapping an orthogonal projection of at least one second light-emitting element onto the base substrate; first conductive lines each coupled between at least one first pixel circuitry and at least one first light-emitting element; and second conductive lines each coupled to at least one first pixel circuitry and extending along the at least one first pixel circuitry to a side away from the at least one first light-emitting element.