Display Panel Circuit Layout for Under-Display Optical Transmittance
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Solution Overview
Problem
The integration of photosensitive devices in display panels reduces the screen-to-body ratio and affects light transmittance and photosensitive performance in the optical component region, hindering the achievement of a narrow-frame or frameless display effect.
Innovation Solution
The display panel design includes a first display region and an optical component region, with first light-emitting elements in the first display region and second light-emitting elements in the optical component region, where first pixel driving circuits are located in the first display region to drive the second light-emitting elements, avoiding occupancy in the optical component region and enhancing light transmittance and photosensitive performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If photosensitive devices are integrated into the display panel to reduce screen-to-body ratio, then the device achieves a narrow-frame or frameless display effect, but light transmittance and photosensitive performance in the optical component region are degraded
Solution Approach 1:
The display panel is divided into a first display region and an optical component region. The first pixel driving circuits are segregated to be located only in the first display region, while the optical component region contains only light-emitting elements and photosensitive devices. This spatial segmentation eliminates the blocking effect of driving circuits on light transmission paths, thereby improving light transmittance in the optical component region while maintaining the integrated design for high screen-to-body ratio.
2Device complexity
If pixel driving circuits are placed in the optical component region to drive light-emitting elements, then device complexity is reduced, but light transmittance and photosensitive performance are negatively affected
Solution Approach 1:
The patent utilizes the spatial dimension by distributing pixel driving circuits across multiple scan line dimensions. Different pixel driving circuits are associated with different scan lines, allowing light to pass through the optical component region along multiple dimensional paths without being blocked by circuits in the same plane. This dimensional approach maintains circuit integration while preserving light transmission and photosensitive performance.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This design improves light transmittance and photosensitive performance in the optical component region, reducing display brightness differences and enhancing overall display quality and screen-to-body ratio.
Implementation Method 1
second light-emitting elements are located in the optical component region
Data Source
AI summary
Provided are a display panel and a display device related to the field of display technologies. The display panel includes a display region and light-emitting elements. The display region includes a first display region and an optical component region. The light-emitting elements include first light-emitting elements and second light-emitting elements, where the first light-emitting elements are located in the first display region, and the second light-emitting elements are located in the optical component region. The first display region includes multiple pixel drive unit columns arranged along a first direction, the multiple pixel drive unit columns include a first pixel drive unit column, the first pixel drive unit column includes multiple first pixel driving circuits, and one of the multiple first pixel driving circuits is electrically connected to one of the second light-emitting elements.