Display Substrate With Segmented Pixel Circuits for Uniform Brightness
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Solution Overview
Problem
Existing display technologies face challenges in achieving uniform brightness and display quality in regions with varying resolution ratios, particularly in under-screen camera designs where limited space and RC loading differences lead to uneven lighting and display inconsistencies.
Innovation Solution
A display substrate design with separate pixel circuits and light emitting devices in different regions, using distinct connecting lines to reduce RC loading and implement bilateral driving, along with shared and independent drive circuits to ensure synchronized and uniform signal charging across regions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If separate pixel circuits and light emitting devices are used in different regions with distinct connecting lines, then display uniformity and brightness consistency are improved, but device complexity increases
Solution Approach 1:
The display substrate is divided into multiple regions (first display region, second display region, frame region) with separate pixel circuits and light emitting devices. Each region has its own connecting lines to control lines, allowing independent control and optimization of signal charging in each region, thereby improving display uniformity while managing complexity through modular design.
Solution Approach 2:
Different regions of the display substrate are assigned different characteristics: the first display region has first pixel circuits connected through first connecting lines, the second display region has second pixel circuits connected through second connecting lines, and the frame region has first pixel circuits connected through third connecting lines. This local differentiation allows each region to be optimized for its specific function, improving overall display quality.
2Illumination intensity
If RC loading differences are reduced through separate connecting lines, then brightness consistency is improved, but manufacturing complexity increases
Solution Approach 1:
The connecting lines are segmented into different types (first connecting lines, second connecting lines, third connecting lines) corresponding to different regions. Each segment serves a specific region with specific pixel circuits, reducing RC loading differences and improving brightness consistency. The segmentation is implemented through distinct routing paths in the manufacturing process.
3Reliability
If bilateral driving is implemented with shared and independent drive circuits, then signal charging synchronization is improved, but device complexity increases
Solution Approach 1:
The first drive circuit serves multiple functions by driving both the first pixel circuits in the frame region and the second pixel circuits in the second display region through different connecting lines. This multi-functional design improves signal charging synchronization across regions while avoiding the need for completely separate drive circuits, thus managing complexity.
Solution Approach 2:
The drive circuit system is segmented into first drive circuits for the frame region and second drive circuits for the second display region, with each segment independently controlling signal charging in its respective region. This segmentation ensures synchronized charging while maintaining manageable complexity through modular control.
Data Source
AI summary
The embodiment of the present disclosure discloses a display substrate, a display panel and a display device. The display substrate includes a plurality of first pixel circuits located in a frame region, the frame region includes a first sub-region and a second sub-region, the plurality of first pixel circuits include first sub-pixel circuits and second sub-pixel circuits, the first sub-pixel circuits are located in the first sub-region, and the second sub-pixel circuits are located in the second sub-region; and the display substrate further includes a plurality of first light-emitting devices located in a first display region.