Under-screen Camera Display Panel with Segmented Pixel Circuits
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Solution Overview
Problem
Current display technologies face challenges in achieving high screen ratio designs for OLED displays, particularly in implementing under-screen cameras without compromising the visual effects and screen ratio of mobile phones, as existing solutions often require punching holes in the screen.
Innovation Solution
A display panel design featuring a base substrate with distinct regions for light-emitting units and pixel circuits, where the second display region is positioned on the side of the first display region, allowing for the connection of pixel circuits and light-emitting units through a network of traces, enabling a full-screen design without holes and improving light transmittance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If pixel circuits are arranged in traditional layouts, then circuit connection is simplified, but trace length differences and resistance variations increase, degrading display quality
Solution Approach 1:
The pixel circuits are segmented into different types (first pixel circuits and second pixel circuits) with different connection configurations. First pixel circuits connect to light-emitting units in the same row, while second pixel circuits connect to light-emitting units in adjacent rows, dividing the connection complexity into manageable segments that reduce overall trace length variations
Solution Approach 2:
The patent introduces a new dimension in trace routing by allowing traces to extend not only horizontally but also vertically to adjacent rows. This multi-dimensional trace arrangement optimizes the connection paths, reducing both the maximum and minimum trace lengths and thereby minimizing resistance variations
2Reliability
If traces are arranged to connect all pixel circuits, then complete circuit coverage is achieved, but trace length differences increase, causing resistance variations and affecting display quality
Solution Approach 1:
Different regions of the display panel employ different trace connection strategies. The patent applies specific connection patterns to different pixel circuit types based on their local requirements, optimizing trace lengths locally to minimize resistance variations while ensuring complete circuit coverage across the entire panel
3Area of stationary object
If under-screen camera is implemented without punching holes, then screen ratio is improved, but trace routing complexity increases
Solution Approach 1:
The trace routing design incorporates dynamic adaptation by using different connection configurations for different pixel circuits. This flexibility allows the system to optimize trace paths around the under-screen camera region without requiring physical holes, maintaining screen integrity while managing routing complexity through adaptive connection strategies
Data Source
AI summary
A display panel and a display device are provided. In the display panel, a first display region includes first light-emitting units, and a second display region includes second light-emitting units, first pixel circuits and second pixel circuits, the first pixel circuit is connected with the first light-emitting unit, and the second pixel circuit is connected with the second light-emitting unit. The first display region includes a first region and a second region on a side of the first region away from the second display region, the second display region includes a third region and a fourth region on a side of the third region close to the first display region, the first light-emitting unit in the first region is connected with the first pixel circuit in the third region, the first light-emitting unit in the second region is connected with the first pixel circuit in the fourth region.