Under-Display Camera Pixel Layout for Narrow-Bezel Screens
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Solution Overview
Problem
Display devices with integrated cameras face challenges in maintaining image display quality and user convenience due to increased bezel width and deformation of the display area caused by the camera's presence, either when placed outside the display area or integrated within it.
Innovation Solution
A display device design where the camera area overlaps the rear face of the display panel, incorporating alternately arranged unit pixel areas for image display and transmissive areas for light transmission, which allows external light to reach the camera without compromising image display functionality, thus preventing bezel width increase and display area deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the camera is disposed in a non-display area outside the display area, then the camera's sensitivity is protected from light-screening materials, but the bezel width increases
Solution Approach 1:
The patent merges the camera area with the display area by allowing the camera to be disposed within the display area boundaries. The display panel includes a camera area that overlaps with the camera, enabling the camera to function without requiring separate non-display space, thus preventing bezel width increase while maintaining camera sensitivity through transparent electrode design
Solution Approach 2:
The patent applies local quality by making the electrode pattern in the camera area transparent or having different optical properties compared to other display areas. This allows light to pass through to the camera while maintaining display functionality in other regions, resolving the contradiction between camera sensitivity and bezel width
2Length of stationary object
If the camera is disposed on the display face overlapping the display area, then the bezel width is reduced, but the display area deforms from a rectangular shape
Solution Approach 1:
The patent segments the display area into distinct functional regions: a camera area that overlaps with the camera and a general display area. The camera area is specifically designed with transparent electrodes to allow light transmission to the camera, while the general display area maintains standard display characteristics, preserving the overall rectangular display shape
Solution Approach 2:
The patent implements local quality by providing different electrode configurations in different areas: transparent electrodes in the camera area for light transmission and standard electrodes in the general display area for image display, thus maintaining the rectangular display shape while accommodating the camera
3Object-generated harmful factors
If light-screening materials are used for signal lines or electrode patterns, then display functionality is improved, but camera sensitivity deteriorates
Solution Approach 1:
The patent applies local quality by making the electrode pattern transparent specifically in the camera area while maintaining light-screening properties in other display areas. This localized transparency allows light to reach the camera sensor without compromising the light-screening functionality of electrode patterns in non-camera regions for display purposes
Solution Approach 2:
The patent segments the electrode pattern into different functional zones: transparent electrode patterns in the camera area to allow light transmission and light-screening electrode patterns in other areas for display functionality, thus resolving the contradiction between display performance and camera sensitivity
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 enhances the camera's light sensitivity while maintaining image display quality and user convenience by allowing external light to be transmitted through the display panel, preventing the deterioration of the camera's sensing ability and minimizing bezel width expansion.
Implementation Method 1
the camera area includes a plurality of transmissive areas which are alternately arranged with at least two unit pixel areas... allowing external light to reach the camera without compromising image display functionality
Data Source
AI summary
A display device includes a display panel including a display area from which an image is output, and the display area includes a camera area overlapping a camera disposed below a rear face of the display panel. The display device provides an imaging function achieve by the camera. The camera area includes a unit pixel area for displaying an image and a transmissive area for transmitting light therethrough. Thus, a separate area that overlaps the camera and does not display an image does not need to be present in the display area. Accordingly, increase in a bezel width and deformation of the display area due to the camera may be prevented.