Display Panel Data Line Compensation for Under-Screen Camera Regions
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Solution Overview
Problem
Existing display panels with under-screen cameras suffer from poor light transmittance in the camera region due to the presence of pixel circuits, leading to suboptimal display effects.
Innovation Solution
The display panel design separates pixel circuits from light-emitting elements in different regions, with pixel circuits in one region driving light-emitting elements in another, using transparent conductive lines to maintain high light transmittance and improve display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If pixel circuits are placed in the camera region to drive light-emitting elements, then the display function is maintained, but light transmittance deteriorates due to the presence of pixel circuits blocking light
Solution Approach 1:
The display panel is divided into a first display region containing pixel circuits and light-emitting elements, and a second display region (camera region) containing only light-emitting elements without pixel circuits. This segmentation allows the camera region to have high light transmittance while the first region maintains full display functionality.
Solution Approach 2:
Conductive lines are introduced as intermediary elements to connect pixel circuits in the first display region with light-emitting elements in the second display region. These conductive lines transmit control signals across regions, enabling the pixel circuits to drive light-emitting elements remotely without being physically present in the camera region.
2Illumination intensity
If pixel circuits are separated from light-emitting elements in different regions, then light transmittance in the camera region is improved, but the connection complexity between pixel circuits and light-emitting elements increases
Solution Approach 1:
The data lines are designed to extend in different spatial directions (first direction and second direction) to connect pixel circuits with light-emitting elements across regions. This multi-directional routing optimizes the connection path, reducing interference and managing the complexity of inter-region connections efficiently.
Solution Approach 2:
Different portions of the data lines have different structural characteristics optimized for their specific functions. For example, portions passing through the camera region are designed to minimize light interference, while portions in the display region are optimized for electrical connection efficiency.
3Productivity
If pixel circuits are removed from the camera region to enable true full-screen display, then display effectiveness is improved, but the ability to drive light-emitting elements in the camera region may deteriorate
Solution Approach 1:
Conductive lines serve as intermediaries to extend the driving capability of pixel circuits from the first display region to the light-emitting elements in the second display region (camera region), maintaining reliable control over distance.
Solution Approach 2:
Pixel circuits are positioned in advance in the first display region where they can efficiently drive both local and remote light-emitting elements, ensuring that the camera region light-emitting elements are properly driven before display operation begins.
Data Source
AI summary
Provided are a display panel and a display device. The display panel includes: a pixel unit (100), including a pixel circuit and a light-emitting element, a data line connected with the pixel circuit, the data line includes first-type data lines and second-type data lines, the second-type data line includes a first portion, a second portion, and a third portion, the third portion is connected with the first portion through a first via hole, the third portion is connected with the second portion through a second via hole, and the third portion includes a main trace located between the first via hole and the second via hole, at least one third portion includes a compensation trace, the compensation trace of the third portion is located at at least one end of the main trace of the third portion, lengths of the plurality of third portions are equal or approximately equal.