Under-Panel Display Pixel Structures for Wide-Angle Brightness Uniformity
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Solution Overview
Problem
In the field of display technology, particularly with under-panel (CUP) displays, there is a challenge in enhancing the display effect while maintaining high light transmittance for camera and optical sensor areas, which affects the visual difference and brightness between conventional and CUP areas, especially at large viewing angles.
Innovation Solution
The implementation of a display panel with a light-transmitting area and auxiliary structures around the light-emitting elements, which includes a combination of film layers and conductive layers on the touch function layer, arranged to minimize the visual difference and improve light transmittance, allowing for better display effects in the CUP area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a CUP area is designed with high light transmittance for cameras and optical sensors, then the camera functionality is improved, but the display effect and brightness uniformity deteriorate at large viewing angles
Solution Approach 1:
The patent applies local quality by introducing auxiliary structures specifically around pixels in the light-transmitting area, while leaving other areas unchanged. These auxiliary structures include protrusions or grooves that selectively modify optical properties only where needed, creating different local characteristics for the CUP area versus conventional display areas.
Solution Approach 2:
The auxiliary structures act as intermediaries between the light-transmitting area and the display function layer. These structures mediate the optical interaction by modifying light paths through protrusions or grooves, thereby improving display effects without compromising the light transmittance required for camera functionality.
2Reliability
If auxiliary structures are added around pixels to improve display effect, then the visual difference between CUP and conventional areas is reduced, but the device complexity increases
Solution Approach 1:
The auxiliary structures are localized only to specific regions (around pixels in the light-transmitting area) rather than being applied uniformly across the entire display. This localized approach improves display effects where needed while minimizing the overall increase in device complexity.
Solution Approach 2:
The display area is segmented into different functional zones: the light-transmitting CUP area with auxiliary structures and the conventional display area without them. This segmentation allows the auxiliary structures to be applied only where necessary to improve display effects, rather than complicating the entire device structure.
Data Source
AI summary
Display panel and display device are provided. The display panel includes a first display area having a light-transmitting area. The display panel further includes a display function layer including light-emitting elements; auxiliary structures on a side of the display function layer facing a display surface of the display panel; and the auxiliary structures configured around pixels in the first display area.