OLED Display Panel Compensation Capacitors for Uniform Signal Input
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Solution Overview
Problem
Special-shaped OLED display panels face challenges in maintaining consistent signal input due to varying pixel row configurations, leading to poor display quality and performance, as current technologies struggle to effectively compensate for capacitance differences between signal lines.
Innovation Solution
The implementation of first and second compensation capacitors in the peripheral areas of the display panel, arranged to reduce capacitance differences and minimize border width, thereby enhancing signal consistency and display quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If data line wiring is carried out in the pixel area according to the shape of the display panel, then the display panel can be made in special shapes (circle, arc, oval), but the display effect consistency between different pixel rows deteriorates due to capacitance differences
Solution Approach 1:
The patent introduces compensation capacitors at specific locations (peripheral areas) to provide localized capacitance compensation for signal lines. This local quality adjustment compensates for the capacitance differences caused by special shapes without changing the overall special shape design, thereby maintaining both shape adaptability and display consistency.
Solution Approach 2:
The patent changes the capacitance parameter of signal lines by adding compensation capacitors. This parameter adjustment equalizes the total capacitance of signal lines extending to different parts of the display panel, resolving the inconsistency in display effect while preserving the special shape configuration.
2Manufacturing precision
If compensation capacitors are added to reduce capacitance differences, then signal consistency improves, but the border width and device area increase
Solution Approach 1:
The patent places compensation capacitors in the peripheral area rather than within the pixel area, utilizing the vertical or lateral space outside the active display region. This dimensional relocation achieves capacitance compensation without increasing the visible display area or border width perceived by users.
Solution Approach 2:
The compensation capacitors are pre-configured in the peripheral area to provide advance capacitance compensation for signal lines. This preliminary action ensures signal consistency is achieved before signals reach the pixel area, eliminating the need for additional border space.
3Ease of operation
If signal lines extend across the display area from one peripheral area to another, then all signal lines can be routed, but the capacitance difference between signal lines increases due to varying lengths
Solution Approach 1:
The patent applies localized capacitance compensation at the peripheral areas where signal lines originate or terminate. By adding compensation capacitors at specific locations corresponding to signal lines with different capacitances, the system achieves uniform effective capacitance across all signal lines while maintaining flexible routing paths.
Data Source
AI summary
This disclosure proposes a display panel, a manufacturing method, an electronic device and a display device. The display panel includes a display area and a peripheral area surrounding the display area. The display panel includes a display substrate, a plurality of signal lines located on the display substrate, and the plurality of signal lines all extending from the peripheral area on one side of the display area to the peripheral area on the other side of the display area across the display area, at least one first compensation capacitor located in the peripheral area on the one side of the display area and corresponding to at least one of the plurality of signal lines, and at least one second compensation capacitor located in the peripheral area on the other side of the display area and corresponding to at least one of the plurality of signal lines.