Multi-Layer Wiring Configuration for High-Resolution Displays
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Solution Overview
Problem
As display devices increase in resolution, the number of wirings between the driver IC and the display area increases, leading to shortened distances and the need for thinner wirings, which raises resistance and power consumption, while thicker wirings can cause short-circuiting and display failures.
Innovation Solution
The implementation of a display device configuration with multiple layers of wirings, where first wirings are arranged parallel and inclined, intersecting with second and third wirings on different layers, to reduce resistance and prevent short-circuiting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If the wirings are thinned to reduce the distance between adjacent wirings, then the wiring density increases, but the resistance of the wirings increases and power consumption increases
Solution Approach 1:
The patent transitions from a single-layer wiring structure to a multi-layer wiring structure. The first wirings are arranged on a first layer, while the second and third wirings are arranged on a second layer, which is different from the first layer. This dimensional change allows the wirings to be spaced apart vertically, reducing resistance without compromising wiring density in the planar direction.
2Quantity of substance
If the wirings are thinned to increase wiring density, then more wirings can be arranged, but the likelihood of short-circuiting increases
Solution Approach 1:
The patent utilizes multiple layers to separate wirings that would otherwise be adjacent in a single-layer structure. The second wiring is provided on a layer different from the first layer, and the third wiring intersects with the first wirings in a plan view but is positioned at a different height. This vertical separation prevents short-circuiting while maintaining high wiring density.
Solution Approach 2:
The wiring structure is segmented into multiple layers, with each layer containing specific wirings. The first wirings are on the first layer, while the second and third wirings are on the second layer. This segmentation allows independent routing and spacing control for different wiring groups, reducing the risk of short-circuiting between adjacent wirings.
3Use of energy by moving object
If thicker wirings are used to reduce resistance, then power consumption decreases, but adjacent wirings are more likely to short-circuit
Solution Approach 1:
The patent resolves the contradiction between wiring thickness and short-circuit risk by moving the wiring problem into the third dimension. Thicker wirings can be used on each layer to reduce resistance and power consumption, while the vertical separation between layers prevents short-circuiting between adjacent wirings that would be too close in a single-layer structure.
Data Source
AI summary
A display includes a plurality of first wirings which are provided on a first layer and each of which is arranged parallel to a first direction in a first area, and which are arranged on a second layer in a second area; a second wiring which is provided in the first layer in the first area and which is provided on a layer in the second area; and a third wiring which is provided on the first layer and arranged between the first wirings in the first area and which is arranged to intersect with first wirings in the second area. The first wirings is arranged to be inclined to the same side in the first direction in the second area. The second wiring is arranged to intersect with a portion of the plurality of first wirings in a plan view, in the second area.