Curved Display Substrate Gate Circuit Relocation for Narrow Frame
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Solution Overview
Problem
The challenge in manufacturing curved display panels is the stress concentration and defects, such as wrinkles, at the corner portions during large-angle bending, which hinders the realization of a narrow frame and reduces product yield due to the limited space for display driving circuits and organic film layer characteristics.
Innovation Solution
The display substrate design includes a base substrate with a display region and a peripheral region, where the gate driving circuit is placed in the peripheral sub-region corresponding to the non-corner portion, allowing for a narrower frame at the corner portion by connecting the gate driving circuit to the corner display sub-region through connecting lines in the display region, reducing stress concentration and improving yield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the gate driving circuit is placed in the corner peripheral region, then the display driving function is achieved, but stress concentration and wrinkles occur during large-angle bending
Solution Approach 1:
The gate driving circuit is extracted from the corner peripheral region and relocated to the non-corner peripheral region, removing the source of stress concentration from the vulnerable corner area while maintaining the display driving function through alternative routing
Solution Approach 2:
The connection between the gate driving circuit and corner display region is achieved by extending connecting lines into the display region, utilizing the display region as an intermediate transmission path rather than direct connection within the peripheral region
2Strength
If the gate driving circuit is placed in the non-corner peripheral sub-region, then stress concentration is reduced during bending, but the connecting lines must extend into the display region
Solution Approach 1:
The connecting lines are merged with the display region, utilizing the display region as a shared transmission path for both display functions and circuit signal transmission, thereby reducing overall system complexity
3Shape
If the peripheral region width is reduced for narrow frame design, then the aesthetic appearance is improved, but the space for display driving circuits is insufficient
Solution Approach 1:
The gate driving circuit is relocated from the peripheral region to the non-corner peripheral sub-region with access through the display region, effectively utilizing space in a different spatial configuration to maintain narrow frame width while accommodating circuit requirements
Solution Approach 2:
The display region serves dual functions: displaying visual information and providing transmission paths for connecting lines that carry gate driving signals, thereby eliminating the need for separate dedicated circuit space
Data Source
AI summary
A display substrate and a display panel are provided. The display substrate includes a base substrate; the base substrate includes a display region and a peripheral region on at least one side of the display region; the peripheral region includes a first peripheral sub-region and a second peripheral sub-region, the display region includes a first display sub-region corresponding to the first peripheral sub-region and a second display sub-region corresponding to the second peripheral sub-region, and the second display sub-region is different from the first display sub-region; the second peripheral sub-region includes a first gate driving circuit, and the first gate driving circuit is configured to be connected to a plurality of gate scanning signal lines in the first display sub-region through a plurality of connecting lines in the display region, to respectively providing a gate scanning signal to a plurality of rows of pixel units in the first display sub-region.