In-Display Distributed Gate Drivers for Smaller Bezels and Lower Delay
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Solution Overview
Problem
Existing display apparatuses face challenges in minimizing the bezel area and improving gate control signal delay.
Innovation Solution
The display apparatus incorporates a substrate with an active area and a non-active area, featuring gate drivers distributed in the active area, a flexible substrate connected to one side of the non-active area, and gate link lines extending in different directions to directly connect gate drivers, thereby omitting wiring lines and reducing signal load.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If gate drivers are disposed in the non-active area with wiring lines connecting them, then the display apparatus can be manufactured with conventional structures, but the bezel area increases and signal delay worsens
Solution Approach 1:
The gate driver is divided into multiple gate drivers disposed at different locations within the active area. Each gate driver is directly connected to pixel circuits, eliminating the need for long wiring lines in the non-active area. This segmentation reduces the bezel area while shortening signal transmission paths to improve signal delay.
Solution Approach 2:
Gate drivers are distributed across the active area in a two-dimensional arrangement rather than being concentrated in the non-active area. This spatial redistribution allows direct connections to pixel circuits without requiring extensive wiring in the bezel region, thereby reducing bezel area and signal delay simultaneously.
2Reliability
If multiple wiring lines are used to connect gate drivers in the non-active area, then signal transmission can be achieved, but the number of wiring lines increases and signal load increases
Solution Approach 1:
The wiring lines that would normally be disposed in the non-active area are extracted and eliminated. Gate drivers are directly connected to pixel circuits within the active area, removing the intermediate wiring infrastructure and reducing device complexity while maintaining signal transmission reliability.
Solution Approach 2:
The functions of multiple wiring lines are merged into direct connections between gate drivers and pixel circuits. By integrating the gate driver functionality closer to the pixel circuits, the patent eliminates the need for separate wiring lines, thereby reducing device complexity and signal load.
Data Source
AI summary
A display apparatus according to an embodiment of the present disclosure includes a substrate including an active area in which a plurality of pixels is disposed and a non-active area which encloses the active area, a plurality of gate drivers which is distributed in the active area and outputs a gate signal, a flexible substrate connected to one side of the non-active area, a plurality of first gate link lines which is connected to the flexible substrate and a first gate driver, among the plurality of gate drivers, and extends in a first direction and a plurality of second gate link lines which is disposed in the active area, extends in a second direction which is different from the first direction, is connected to the plurality of first gate link lines, and is connected to a first gate driver and a second gate driver, among the plurality of gate drivers.