Display Panel Layout for Under-Screen Camera Brightness Uniformity
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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 under-screen camera implementation, which affects imaging quality and display functionality.
Innovation Solution
The display panel is designed with a base substrate having a display region divided into a first region with higher light transmittance for the camera area, a second region for normal display, and a transition region. The first region contains only first light-emitting elements, while the second region includes second light-emitting elements, first and second pixel circuitries, and conductive lines optimized for light transmittance and even brightness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If light transmittance is increased through decreasing Pixels Per Inch (PPI) at a camera region, then imaging quality is improved, but brightness becomes uneven at the camera region
Solution Approach 1:
The patent applies local quality by creating distinct regions with different PPI values: a first region (camera region) with lower PPI for high light transmittance, a second region with normal PPI for standard display, and a transition region with intermediate PPI. This localized differentiation allows the camera region to achieve superior imaging quality through enhanced light transmittance while the other regions maintain appropriate display characteristics, thereby resolving the brightness uniformity issue that would result from uniformly decreasing PPI across the entire display.
Solution Approach 2:
The display region is segmented into multiple functional zones: a first region dedicated to camera functionality with optimized light transmittance, a second region for conventional display, and a transition region bridging the two. This segmentation enables independent optimization of each region's characteristics, allowing the camera region to achieve high imaging quality without causing brightness non-uniformity across the entire display surface.
2Measurement precision
If light transmittance is increased through decreasing Pixels Per Inch (PPI) at a camera region, then imaging quality is improved, but the camera region size becomes too small
Solution Approach 1:
The patent segments the display into a first region with low PPI optimized for camera function, a second region with normal PPI, and a transition region with intermediate PPI. This segmentation allows the camera region to be expanded to a larger area while maintaining low PPI and high light transmittance characteristics, thereby improving both imaging quality and camera region size simultaneously.
Solution Approach 2:
By applying local quality differentiation, the patent enables the first region to have optimized characteristics for camera functionality (low PPI, high light transmittance) while the second and transition regions maintain appropriate display characteristics. This allows the camera region to be made larger without compromising the overall display quality, resolving the contradiction between imaging quality improvement and camera region size limitation.
3Illumination intensity
If the display region includes only first light-emitting elements at the first region, then light transmittance is increased, but display functionality is reduced
Solution Approach 1:
The patent segments the display region into a first region containing only light-emitting elements for high light transmittance and camera function, a second region with full pixel circuitries for standard display, and a transition region with both types of elements. This segmentation enables the first region to achieve maximum light transmittance while the second and transition regions maintain complete display functionality, thereby resolving the contradiction between light transmittance improvement and display functionality preservation.
Solution Approach 2:
The transition region serves multiple functions by containing both first light-emitting elements (for light transmittance) and second pixel circuitries (for display functionality). This multi-functionality allows the transition region to contribute to both camera operation and display output, ensuring that the overall display system maintains full display functionality while the first region provides enhanced light transmittance for imaging.
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.