Touch Control Structure Mesh Electrodes Optical Efficiency
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Solution Overview
Problem
Current display apparatuses face challenges in achieving high optical efficiency and reducing power consumption while maintaining vivid and bright colors, with existing touch structures often compromising on these aspects.
Innovation Solution
A touch structure comprising multiple insulating and touch layers with intersecting mesh electrodes, dummy electrodes, and a specific arrangement of via holes to minimize process risks and optimize electrical connections, integrated with a touch display panel that includes a base substrate, encapsulation layer, and anti-reflection layers to enhance optical efficiency and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional touch structures with continuous electrodes are used, then touch sensitivity is improved, but optical efficiency deteriorates and power consumption increases
Solution Approach 1:
The continuous touch electrodes are segmented into mesh structures with disconnected mesh lines. This segmentation reduces the total electrode area while maintaining touch detection capability through the distributed mesh pattern, thereby improving optical efficiency and reducing power consumption while preserving touch sensitivity.
Solution Approach 2:
The patent transitions from planar continuous electrodes to three-dimensional mesh structures with vertical layering. The mesh electrodes are arranged in multiple layers with insulating layers between them, creating a spatial distribution that reduces optical interference while maintaining electrical functionality for touch detection.
2Reliability
If more via holes are arranged to connect touch layers, then electrical connectivity is improved, but manufacturing complexity and process risk increase
Solution Approach 1:
Via holes are extracted and relocated from the central effective display region to the peripheral non-effective region. This extraction maintains necessary electrical connectivity for touch layer integration while eliminating the manufacturing complexity and process risk associated with forming via holes in the sensitive central area.
Solution Approach 2:
The insulating layers serve as intermediaries between the mesh electrodes of different touch layers. These insulating layers enable electrical isolation where needed while allowing controlled connections through peripheral via holes, simplifying the overall manufacturing process by separating connectivity requirements from the display area.
Data Source
AI summary
A display substrate is provided, the display substrate has a display region and includes a base substrate, sub-pixels, data lines, and first signal lines; each of at least part of the sub-pixels includes a pixel driving circuit and a light-emitting device; the data lines are in a first metal layer, the first signal lines are in a second metal layer; in a first display region, a plurality of first signal lines extend in a first direction, the first display region includes first compensation patterns, the first electrode is on a side of the first signal lines and the first compensation patterns away from the base substrate, an orthographic projection of at least one first compensation pattern on the base substrate at least partially overlaps with an orthographic projection of the first electrode of a light-emitting device of at least one sub-pixel on the base substrate.