Display Panel Drive Signal Line Compensation for Uniformity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Display panels with non-uniform display due to differences in the number of loads on drive signal lines in the display area and non-display areas, resulting from reserved spaces for electronic devices, leading to variations in writing times for data signals and affecting display uniformity.
Innovation Solution
A display panel design that includes a light-transmitting group surrounded by a non-display area, with pixel driving circuits and drive signal lines arranged such that the drive signal lines extend through the non-display area to connect between light-transmitting areas, increasing the length and resistance of the signal lines and compensating for load differences, thereby improving display uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If reserved space is created for electronic photosensitive devices in the display area, then the display panel can accommodate additional functional devices, but the number of loads on drive signal lines becomes non-uniform, resulting in poor display uniformity
Solution Approach 1:
The patent applies local quality by creating a non-display area with different properties (no light-emitting elements) surrounding the light-transmitting group, while the display area maintains uniform light-emitting elements. This local differentiation allows the non-display area to compensate for load differences on drive signal lines without affecting the uniformity of the display area, thus resolving the contradiction between device integration and display uniformity.
2Adaptability or versatility
If the number of light-emitting elements in each row is made different to accommodate reserved spaces, then device integration is enabled, but the writing time of data signals varies across rows, affecting display quality
Solution Approach 1:
The patent introduces a non-display area as an intermediary region surrounding the light-transmitting group. This intermediary area contains no light-emitting elements but serves as a buffer zone that compensates for load differences on drive signal lines. By placing this intermediary structure between the display area and the reserved spaces, the patent enables device integration while maintaining uniform writing times and display quality.
3Manufacturing precision
If drive signal lines are extended through the non-display area, then the length and resistance of signal lines increase, compensating for load differences, but the complexity of the signal line layout increases
Solution Approach 1:
The patent applies equipotentiality by extending drive signal lines through the non-display area to achieve balanced electrical characteristics. The non-display area provides additional path length for signal lines, increasing their resistance to compensate for differences in the number of light-emitting elements connected to different rows. This creates equipotential conditions across all drive signal lines, ensuring uniform writing times despite the increased layout complexity.
Data Source
AI summary
Display panel and display device are provided. The display panel includes a first light-transmitting group, a first non-display area, and a display area; and a plurality of pixel driving circuits and a plurality of drive signal lines. The first non-display area surrounds the first light-transmitting group, the display area surrounds the first non-display area, and the first light-transmitting group includes at least two first light-transmitting areas arranged along a first direction. The plurality of pixel driving circuits is in the display area, a pixel driving circuit of the plurality of pixel driving circuits includes a data writing module, and a drive signal line of the plurality of drive signal lines is electrically connected to a control terminal of the data writing module.