Array Substrate Shielding Structure for Narrow Frame Display
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Solution Overview
Problem
Liquid crystal displays face challenges in achieving a high screen-to-body ratio and narrow frame design due to the large volume of fingerprint identification devices in the frame region, which limits their display functionality.
Innovation Solution
An array substrate design that includes a display region surrounding an optical device arranging region, with a shielding structure and signal lines arranged between subsections of the shielding structure, allowing for a narrower frame and increased screen-to-body ratio, while ensuring accurate signal line fabrication and improved fingerprint identification sensitivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fingerprint identification device is arranged in the frame region, then the device can be integrated into the display panel, but the frame region area increases causing lower screen-to-body ratio and wider frame design
Solution Approach 1:
The patent moves the fingerprint identification device from the traditional frame region (2D plane) into the display region, utilizing the space around the display area. This spatial reconfiguration allows the optical device to be positioned in the optical device arranging region without occupying additional frame area, thereby maintaining a narrow frame design while achieving high screen-to-body ratio.
2Object-affected harmful factors
If the shielding structure is made as a continuous single piece, then it provides complete shielding, but it creates surface unevenness causing signal line fabrication errors and line breakage
Solution Approach 1:
The shielding structure is divided into multiple subsections (first shielding subsection, second shielding subsection, etc.) arranged in an array. These subsections are separated by gaps that provide flat surfaces for signal line fabrication. The segmentation maintains shielding effectiveness through the collective arrangement of multiple subsections while eliminating the surface unevenness problem caused by a single continuous shielding structure.
Data Source
AI summary
An array substrate and a display device are disclosed. The array substrate includes a display region including a first display region and an optical device arranging region. The first display region at least partly surrounds the optical device arranging region. The array substrate further includes a base substrate; an optical device, a shielding structure and a signal line arranged on the base substrate. The optical device and the shielding structure are located in the optical device arranging region, the optical device has an opening for receiving light, and orthographic projections of the opening and the shielding structure on the base substrate have no overlap. The shielding structure extends in a first direction, the signal line extends in a second direction, the first direction intersects with the second direction, the shielding structure includes at least two subsections, and the signal line is correspondingly arranged in a gap between two adjacent subsections.