Display Panel Link Line Layout for Narrow Bezel and Low Crosstalk
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Solution Overview
Problem
The challenge in reducing the bezel of display panels is exacerbated by the arrangement of link lines for data signal transmission in the non-active area, making it difficult to minimize the bezel size.
Innovation Solution
A data link structure is introduced that reduces the bezel by rearranging link lines within the active area, thereby minimizing the non-active area and improving image quality by reducing crosstalk and resistance in the transmission path.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If link lines are arranged in the non-active area for data signal transmission, then data transmission function is achieved, but the bezel size increases
Solution Approach 1:
The patent applies dimensionality change by moving link lines from the traditional non-active area (2D plane outside active area) into the active area (2D plane inside display region). This spatial reconfiguration allows link lines to utilize the active area space, thereby reducing the bezel size while maintaining data transmission functionality. The link lines are routed through the active area in a manner that minimizes interference with pixel structures.
2Reliability
If link lines are arranged in the non-active area, then data transmission is enabled, but crosstalk with gate lines occurs causing image abnormalities
Solution Approach 1:
The patent extracts the link lines from their traditional routing path in the non-active area and relocates them into the active area. This separation removes the link lines from proximity to gate lines in the non-active area, thereby eliminating the crosstalk interference that causes image abnormalities. The extraction principle is applied by isolating the data transmission path from the gate signal path in space.
Solution Approach 2:
The patent introduces an intermediary structure (insulating layer or shielding structure) between the link lines and gate lines when they must cross or run parallel in the active area. This intermediary element acts as a mediator to prevent direct electromagnetic coupling between the data-carrying link lines and the control gate lines, thereby reducing crosstalk while allowing both structures to coexist in the active area.
3Reliability
If link lines are arranged in the non-active area, then data transmission path is established, but resistance in transmission path increases
Solution Approach 1:
The patent reduces transmission path resistance by changing the spatial dimension of the link line routing. By routing link lines through the active area with shorter horizontal distance compared to the traditional non-active area path, the overall length of the transmission path is reduced. This dimensional reconfiguration directly decreases the resistive losses in the data transmission path.
Data Source
AI summary
A display device includes a substrate including an active area and a non-active area. A plurality of subpixels is arranged on the active area and the non-active area includes a pad area located in a column direction from the active area. The display device includes a plurality of gate lines arranged in the active area and each extending in the row direction, a plurality of data lines arranged in the active area and each extending in a column direction, a plurality of pads disposed in the pad area, and a plurality of link lines electrically connecting a plurality of pads and a plurality of data lines. Each of the plurality of link lines may include a horizontal link line disposed in the active area and extending in the row direction and a vertical link line disposed in the active area and extending in the column direction.