Dual Pixel Circuit Design for Camera Area Light Transmittance
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Solution Overview
Problem
In display devices with integrated cameras, the area overlapping the camera often experiences reduced light transmittance due to the presence of pixel circuits, which can compromise both display quality and camera functionality.
Innovation Solution
The implementation of a dual-pixel circuit configuration, where a 7Tr1C pixel circuit is used in areas not overlapping the camera and a 4Tr1C pixel circuit in areas overlapping the camera, allows for reduced pixel circuit area and enhanced light transmittance without compromising resolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If a standard pixel circuit configuration is used in the display area, then the display quality is maintained, but the light transmittance in the camera overlapping area is reduced
Solution Approach 1:
The patent applies different pixel circuit configurations to different regions of the display panel. Specifically, the camera overlapping area uses a simplified pixel circuit design with reduced transistor count and optimized wiring layout, while non-overlapping areas use the standard high-performance circuit design. This local differentiation allows the camera area to achieve higher light transmittance without compromising display quality in other regions.
Solution Approach 2:
The display panel is segmented into at least two regions: a camera overlapping area and a non-overlapping area. Each region is assigned an optimized pixel circuit configuration suitable for its specific function. The segmentation enables independent optimization of light transmittance in the camera area while maintaining standard display performance elsewhere.
2Illumination intensity
If the pixel circuit area is reduced to improve light transmittance, then camera functionality is enhanced, but display resolution may be compromised
Solution Approach 1:
Different pixel circuit designs are implemented in different regions: the camera overlapping area uses a compact circuit layout optimized for light transmission, while non-overlapping areas use traditional high-resolution circuit designs. This ensures that resolution is maintained where needed while maximizing light transmittance in the camera region.
Solution Approach 2:
The patent modifies key parameters of the pixel circuit in the camera overlapping area, including reducing the number of transistors per pixel, optimizing wiring trace width and spacing, and adjusting pixel electrode dimensions. These parameter changes collectively increase light transmittance while maintaining acceptable display quality through compensatory design elements.
Data Source
AI summary
According to one embodiment, a display device includes a base, a plurality of first pixels disposed in a first area included in a display area on the substrate, and a plurality of second pixels disposed in a second area different from the first area, included in the display area on the substrate. Each of the plurality of first pixels includes a first pixel circuit including a plurality of transistors and a first display element driven by the first pixel circuit. Each of the plurality of second pixels includes a second pixel circuit including a plurality of transistors and a second display element driven by the second pixel circuit. The transistors in the second pixel circuit are less in number than the transistors in the first pixel circuit.