Display Panel Circuit Segmentation for Under-Screen Camera Regions
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Solution Overview
Problem
Existing display panels with under-screen cameras suffer from poor light transmittance and display effects in the light-transmitting regions due to the presence of pixel circuits, which reduces the screen-to-body ratio and display quality.
Innovation Solution
A display panel design with separate first and second display regions, where pixel circuits are only present in the non-light-transmitting first region, and light-emitting elements are connected to pixel circuits through transparent conductive traces in the light-transmitting second region, ensuring good light transmittance and display quality without reducing pixel density.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pixel circuits are present in the light-transmitting region, then the under-screen camera function is achieved, but the light transmittance and display quality deteriorate
Solution Approach 1:
The display region is divided into a first display region (non-light-transmitting) and a second display region (light-transmitting). Pixel circuits are segmented and placed only in the first display region, while the second display region contains only light-emitting elements. This spatial segmentation allows the under-screen camera function to be achieved in the second region without pixel circuits blocking light, while the first region maintains full pixel circuit functionality.
Solution Approach 2:
Different regions of the display are assigned different functional qualities: the first display region has both pixel circuits and light-emitting elements for normal display, while the second display region has only light-emitting elements to maximize light transmittance for the under-screen camera. This local differentiation resolves the contradiction by optimizing each region for its specific purpose.
2Illumination intensity
If pixel circuits are removed from the light-transmitting region, then light transmittance is improved, but the screen-to-body ratio and display quality worsen due to holes
Solution Approach 1:
The connection between pixel circuits and light-emitting elements is moved from the same plane to a different spatial dimension. Conductive traces extend from the first display region through the substrate to the second display region, creating a three-dimensional connection path. This allows the second display region to have high light transmittance while still being electrically connected to pixel circuits in the first region, eliminating the need for holes or missing pixels.
3Area of stationary object
If pixel circuits are placed in the light-transmitting region, then the screen-to-body ratio is reduced, but the display quality is maintained
Solution Approach 1:
Pixel circuits are extracted from the second display region and placed exclusively in the first display region. This extraction eliminates the obstruction to light transmittance in the second region, allowing for higher screen-to-body ratio without compromising display quality, as the light-emitting elements in the second region remain fully functional and connected to the relocated pixel circuits.
4Illumination intensity
If conductive traces are used to connect pixel circuits to light-emitting elements in the light-transmitting region, then light transmittance is improved, but the device complexity increases
Solution Approach 1:
The first display region serves multiple functions: it contains pixel circuits for driving both the first and second display regions, and it acts as the connection hub for conductive traces. The conductive traces themselves serve dual purposes: electrical connection and spatial routing. This multi-functionality reduces the need for additional dedicated components, offsetting the complexity of the three-dimensional trace structure.
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
Ensures high light transmittance and display quality in the light-transmitting region while maintaining pixel density, allowing for a full-screen display without holes, thus enhancing the screen-to-body ratio and overall display effect.
Implementation Method 1
at least one second pixel circuit of the plurality of second pixel circuits is connected to at least one second light-emitting element of the plurality of second light-emitting elements by a conductive trace
Implementation Method 2
a plurality of first light-emitting elements, wherein the plurality of first pixel circuits, the plurality of second pixel circuits, and the plurality of first light-emitting elements are disposed in the first display region
Data Source
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AI summary
The present disclosure discloses a display panel and a display device. The display panel includes a base substrate including a first display region and a second display region. Since pixel circuits for driving light-emitting elements in the second display region are only disposed in the first display region but not disposed in the second display region, the light transmittance of the second display region is ensured to be good. Correspondingly, the display panel in the present disclosure has a good display effect.