Display Substrate Shared Reset Transistors for Under-Screen Cameras
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing display technologies face challenges in ensuring both high light transmittance and display quality in the under-screen camera solution, particularly in maintaining a high pixel density and avoiding visual graininess and black borders in the under-screen imaging region.
Innovation Solution
The display substrate incorporates a shared reset transistor configuration for sub-pixel driving circuits, allowing for a higher pixel density and light transmittance in the under-screen imaging region by partially sharing reset transistors between sub-pixels, thereby reducing the area occupied by pixel driving circuits.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the pixel driving circuit area is reduced to increase screen-to-body ratio, then the light transmittance is improved, but the pixel density decreases causing visual graininess
Solution Approach 1:
The patent merges the reset transistor functions of multiple sub-pixels into a single shared reset transistor. Specifically, one reset transistor serves multiple sub-pixels within the same sub-pixel group, reducing the total area occupied by driving circuits while maintaining the pixel density through functional consolidation rather than physical reduction of individual pixel elements
Solution Approach 2:
The shared reset transistor performs the reset function for multiple sub-pixels sequentially, making it a multi-functional component. This universal approach allows a single transistor to serve multiple purposes across different sub-pixels, thereby reducing the overall circuit area without compromising the display quality or pixel density
2Area of stationary object
If the pixel driving circuit area is reduced to increase screen-to-body ratio, then the screen-to-body ratio is improved, but the display quality deteriorates due to black borders
Solution Approach 1:
By merging the reset transistor functions across multiple sub-pixels into a shared resource, the patent eliminates the need for separate reset transistors for each sub-pixel. This consolidation reduces the driving circuit area, expands the display area, and eliminates black borders while maintaining display quality through proper signal routing and timing control
3Area of stationary object
If the pixel driving circuit area is reduced to increase screen-to-body ratio, then the screen-to-body ratio is improved, but the pixel density increases causing visual graininess
Solution Approach 1:
The patent combines multiple reset transistor functions into a single shared reset transistor that serves multiple sub-pixels. This merging approach reduces the driving circuit area, allowing for a higher screen-to-body ratio while maintaining pixel density by ensuring that each sub-pixel still receives proper reset signals through the shared transistor's sequential operation
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 enables a high pixel density and maintains optimal light transmittance in the under-screen imaging region, enhancing display quality and screen-to-body ratio without visual graininess or black borders.
Implementation Method 1
a first pixel electrode and a second pixel electrode which are disposed to face each other with a liquid crystal layer therebetween
Implementation Method 2
a liquid crystal layer therebetween
Implementation Method 3
a photonic crystal structure comprising a plurality of first pixel electrodes and a plurality of second pixel electrodes which are disposed to face each other with a liquid crystal layer therebetween, in which the photonic crystal structure includes a plurality of hollow pixels having different shapes from each other in a plan view
Implementation Method 4
a reflective polarizer
Data Source
Figure 1
Figure 2~3
Figure 4
AI summary
A display substrate, a display panel and a display apparatus are provided. The display substrate includes a first display region and a second display region, and a light transmittance of the first display region is greater than a light transmittance of the second display region. A plurality of sub-pixels located in the first display region includes a plurality of sub-pixel groups, each sub-pixel group includes a first sub-pixel and a second sub-pixel, the first pixel driving circuit includes a first sub-pixel driving circuit and a second sub-pixel driving circuit, the first sub-pixel driving circuit is configured to drive the first light-emitting device of the first sub-pixel to emit light, and the second sub-pixel driving circuit is configured to drive the first light-emitting device of the second sub-pixel to emit light. The first sub-pixel driving circuit includes at least a first reset transistor, the second sub-pixel driving circuit includes at least a second reset transistor, and the first reset transistor of the first sub-pixel driving circuit and the second reset transistor of the second sub-pixel driving circuit are at least partially shared with each other.