Asymmetric Display Active Area for Sensing Line Routing
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Solution Overview
Problem
Existing display devices face challenges in securely disposing sensing lines, leading to potential image blocking and increased parasite capacitance due to the placement of print layers and circuit patterns, which affects the visibility and functionality of the display.
Innovation Solution
The display device incorporates an input sensing part with an active area and sensing electrodes, where the distance between the active area and the display area is strategically adjusted to secure a non-active area for the sensing lines, preventing image blocking and reducing parasite capacitance by optimizing the placement of sensing electrodes and print layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If sensing lines are disposed close to the display area to maximize active area, then the display area is maximized, but image blocking and parasite capacitance increase
Solution Approach 1:
The patent applies asymmetry by positioning the active area closer to one side of the display area (first side) than to the opposite side (second side). Specifically, the distance from the first side of the active area to the first side of the display area is smaller than the distance from the second side of the active area to the second side of the display area. This asymmetric arrangement allows sensing lines to be disposed in the larger spacing region, maximizing the display area while providing sufficient space for sensing lines to avoid image blocking and reduce parasite capacitance effects.
2Ease of manufacture
If print layers and circuit patterns are placed over sensing lines, then manufacturing is simplified, but sensing line visibility and signal quality deteriorate
Solution Approach 1:
The patent introduces a non-active area as an intermediary region between the active area and the display area. This non-active area serves as a dedicated space for disposing sensing lines, allowing print layers and circuit patterns to be placed over other regions without directly covering the sensing lines. The non-active area acts as a buffer zone that separates the sensing lines from the display area, enabling simplified layer stacking while maintaining sensing line visibility and signal quality by preventing direct overlay of print layers and circuit patterns on the sensing lines.
Data Source
AI summary
A display device including: a display panel including a display area and a plurality of pixels disposed in the display area; and an input sensing part disposed on the display panel, wherein the input sensing part includes an active area and a plurality of sensing electrodes disposed in the active area, a first distance between a 1-1 side of the active area and a 2-1 side of the display area is smaller than a second distance between a 1-2 side of the active area and a 2-2 side of the display area, the 1-1 side and the 2-1 side are adjacent to each other and the 1-2 side and the 2-2 side are adjacent to each other, and the 1-1 side and the 1-2 side are opposite to each other in a first direction, and the 2-1 side and the 2-2 side are opposite to each other in the first direction.