Array Substrate With External Drive Module for Narrow Bezel
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Solution Overview
Problem
Existing display technologies face challenges in achieving narrow or zero bezel designs due to the need for peripheral wiring and signal matching with GOA circuits, leading to increased costs and potential reliability issues, while bezel-free designs using optical conversion materials are costly and limit viewing angles.
Innovation Solution
An array substrate design that eliminates the GOA circuit and integrates a drive module outside the display area, using multiplexers and switching transistors to provide signals to data and gate lines from a single end, reducing bezel width and eliminating the need for peripheral wiring and optical conversion materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a GOA circuit is integrated into the array substrate to replace an externally connected driver chip, then the production process procedures are reduced and product process cost is lowered, but the peripheral wiring connecting the gate lines and the GOA circuit requires extra space which is unavailable for display, thus increasing the peripheral area and making it difficult to meet the demands for narrow bezel or even zero bezel display devices
Solution Approach 1:
The patent extracts the GOA circuit from the array substrate, relocating it to an external position. The gate lines are extended directly from the display area without connecting to an on-substrate GOA circuit, thereby eliminating the peripheral wiring space requirement and enabling narrow bezel designs while maintaining the manufacturing simplicity benefits of integrated driving
2Device complexity
If a GOA circuit is integrated into the array substrate, then the integration level of the liquid crystal panel is improved, but the peripheral wiring connecting the gate lines and the GOA circuit requires extra space, thus increasing the peripheral area and making it difficult to meet the demands for narrow bezel display devices
Solution Approach 1:
The GOA circuit functionality is extracted from the array substrate and implemented externally. The gate lines are designed to extend directly from the display area without on-substrate GOA circuit connections, achieving high integration level through external driving while eliminating the peripheral area consumption of on-substrate GOA circuits and their wiring
3Device complexity
If a GOA circuit is integrated into the array substrate, then the drive is more integrated, but signal matching between the GOA circuit and the gate lines must be considered, thus increasing the cost of the array substrate drive and causing poor relevant reliability
Solution Approach 1:
The GOA circuit is extracted from the array substrate and implemented as an external driver. This eliminates the signal matching issues between on-substrate GOA circuits and gate lines, improving reliability while maintaining drive integration through external connection. The gate lines are extended directly from the display area without on-substrate GOA circuit interfaces
Data Source
AI summary
Embodiments of the present disclosure provide an array substrate, a display panel and a display device, which may simplify bezels at three sides of the display panel and achieve the effect of almost zero bezel visually. Because a GOA design is not adopted, the cost of a drive circuit may be reduced, and poor relevant reliability caused by the GOA may be avoided. The array substrate comprises a display area and a drive circuit area. The display area includes: a plurality of pixel units, a plurality of data lines, and a plurality of gate lines. The drive circuit area includes: a drive module being configured to provide signals to data lines and gate lines. The drive circuit area is outside of the display area and close to the data lines. The embodiments of the present disclosure are used to manufacture the array substrate, the display panel and the display device.