Flexible Array Substrate Shift Register Width Design
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Solution Overview
Problem
The Gate On Array (GOA) technology for flat panel liquid crystal displays faces challenges when applied to curved panels, as the deformation of active switch elements due to curvature changes affects the structure and performance, leading to issues like bright and dark lines and poor electric properties.
Innovation Solution
An array substrate with a shift register circuit and active switches, where the widths of the switches' ends are increased to maintain desirable electrical performance, and a compensation circuit is included to reduce potential differences, ensuring consistent output even on curved panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If GOA technology is applied to curved display panels, then manufacturing costs are reduced and panel thickness is decreased, but the active switch elements deform at different degrees causing bright and dark lines
Solution Approach 1:
The patent applies different width designs to different switch elements based on their location. Switch elements at the edge of the pixel array are designed with greater widths than those in the interior, compensating for the more severe deformation experienced by edge elements on curved panels. This local differentiation resolves the contradiction by maintaining display quality through targeted structural adjustments while preserving the cost benefits of GOA technology.
2Reliability
If the width of active switch elements is increased to maintain electrical performance, then electric properties are improved, but the area occupied by each pixel circuit increases
Solution Approach 1:
Instead of uniformly increasing the width of all active switch elements, the patent implements a selective approach where only edge switch elements have increased widths. This localized enhancement maintains electrical performance where it is most needed while minimizing the overall area increase, thus resolving the contradiction between improving electric properties and controlling pixel circuit area.
3Reliability
If the structure of active switch elements is modified to compensate for curvature deformation, then output consistency is improved, but device complexity increases
Solution Approach 1:
The patent modifies a single key parameter - the width of the active switch element - to compensate for curvature deformation effects. By changing this geometric parameter rather than introducing complex structural modifications, the patent achieves improved output consistency while minimizing increases in device complexity. The solution involves adjusting the width parameter of edge switches to counteract the deformation-induced performance variations.
Data Source
AI summary
An array substrate and a display panel are provided. The array substrate includes: a substrate; an active switch; and a shift register circuit, located on a side edge of the substrate, and including a multistage shift register, including: a first switch, a second switch, a third switch, a fourth switch, and a fifth switch, where widths of first ends and second ends of the plurality of switches of the shift register are greater than widths of a first end and a second end of the active switch. In this application, the widths of the first ends and the second ends of the plurality of switches of the shift register may be increased to resolve problems of a poor electric property of a switch of a shift register circuit caused by a curvature change of a flexible display panel and bright and dark lines caused by the poor electric property.