Electroluminescent Panel Layout for Under-Display Photosensors
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Solution Overview
Problem
The challenge is to increase the screen-to-body ratio and implement a narrow bezel design in electroluminescent display panels, particularly due to the larger volume occupied by cameras and optical devices in the bezel region, which limits high screen-to-body ratio and narrow bezel implementation.
Innovation Solution
The electroluminescent display panel incorporates a photosensitive component arranging region with a lower pixel density and strategically arranged signal lines that overlap with orthographic projections of pixels, reducing the area occupied by the photosensitive component and enhancing light transmittance, thereby allowing for a narrower bezel and increased screen-to-body ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the camera and optical devices are arranged in the bezel region, then the display panel can be assembled with functional components, but the area occupied by the bezel region increases, limiting the screen-to-body ratio and narrow bezel design
Solution Approach 1:
The patent moves the photosensitive component from the traditional bezel region (2D plane at the edge) to a dedicated photosensitive component arranging region within the display region. This spatial reconfiguration allows the component to be integrated without increasing the overall bezel area, effectively utilizing the display region's internal space to resolve the contradiction between component arrangement and bezel size.
Solution Approach 2:
The display region is segmented into a normal display region and a photosensitive component arranging region. This segmentation allows the photosensitive component to be placed in a specific zone with optimized pixel arrangement, separating the functional component placement from the traditional bezel area and enabling narrow bezel design while maintaining component integration.
2Adaptability or versatility
If the pixel density in the photosensitive component arranging region is reduced, then the photosensitive component can be arranged effectively, but the display quality in that region may be affected
Solution Approach 1:
The patent applies different pixel arrangement strategies to different regions: the normal display region maintains high pixel density for optimal display quality, while the photosensitive component arranging region uses a reduced pixel density specifically optimized for photosensitive component placement. This local differentiation allows each region to fulfill its specific function without compromising overall performance.
3Area of stationary object
If signal lines are arranged to overlap with pixel orthographic projections, then the area occupied by signal lines is reduced, but light transmittance may be affected
Solution Approach 1:
The patent strategically positions signal lines to overlap with pixel orthographic projections in the photosensitive component arranging region, where the reduced pixel density already creates more space. The signal lines are designed to pass through regions where they have minimal impact on light transmittance, converting the potential harm of signal line obstruction into a benefit by efficiently utilizing the available space without significantly compromising light transmission to the photosensitive component.
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 configuration reduces the shielding of light-transmitting regions, improves light transmittance, and enhances the performance and reliability of the display device, achieving a higher screen-to-body ratio and enabling a narrow bezel design.
Implementation Method 1
The electroluminescent display is a kind of self-luminance device, which can be implemented without the backlight source
Implementation Method 2
A camera and other optical devices may be arranged in the bezel region
Data Source
AI summary
An electroluminescent display panel and a display device are provided. In the embodiments of the disclosure, a photosensitive component is arranged in the photosensitive component arranging region. The extending line of at least one line is arranged in the photosensitive component arranging region so that the orthographic projection of the extending line on the light-emitting surface of the electroluminescent display panel overlaps with the first pixels in the first and second specific pixel groups in the photosensitive component arranging area; the first and second specific pixel groups include respective first pixels located in first straight lines of the second pixels correspondingly connected to two adjacent signal lines, the first and second specific pixel groups are adjacent in the second direction, and the first straight lines extend in the first direction.