Tiled Display Gate Driver Layout for Narrow Non-Display Borders
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Solution Overview
Problem
Existing display devices face challenges in increasing the freedom of arrangement of gate drivers with rising resolution and minimizing non-display areas to create a seamless, natural screen experience.
Innovation Solution
The solution involves a display device design where a first stage of the gate driver is positioned to the left of a clock line and a second stage to the right, between adjacent unit pixel rows, allowing for increased integration and symmetry, and minimizing non-display areas by aligning pixel pitches between display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If resolution is increased, then display quality is improved, but gate driver arrangement freedom is reduced
Solution Approach 1:
The gate driver is divided into two separate stages: a first stage disposed to the left of the clock line and a second stage disposed to the right of the clock line. This segmentation allows each stage to be independently arranged in the non-display area, providing flexibility to accommodate higher resolution requirements while maintaining proper driver functionality.
2Extent of automation
If gate driver integration is increased, then device functionality is improved, but non-display area is reduced
Solution Approach 1:
The gate driver stages are arranged in the non-display area utilizing the lateral dimension (left and right of clock line) rather than consuming additional vertical space. This dimensional arrangement integrates the gate driver functionality while preserving the display area and minimizing the non-display area footprint.
3Stability of the object's composition
If non-display area is minimized, then screen naturalness is improved, but gate driver space is reduced
Solution Approach 1:
The clock line serves as a reference that divides the non-display area into distinct regions (left and right sides), with each region locally optimized for gate driver stage placement. This local quality approach allows efficient space utilization in the non-display area while maintaining overall screen naturalness by minimizing the total non-display area.
Data Source
AI summary
A display device including a substrate that includes a display area and a non-display area disposed at a side of the display area. The display area includes first through fourth areas. The fourth area includes a first sub-area adjacent to at least one of the first to third areas, and a second sub-area excluding the first sub-area. At least the second sub-area includes first pixels disposed in a first direction in a first pixel row, second pixels disposed in the first direction in a second pixel row that is a next row of the first pixel row, the second pixels spaced apart from the first pixels, a clock line extending in a second direction intersecting the first direction, and a gate driver including a first stage disposed left of the clock line in a plan view, and a second stage disposed right of the clock line in a plan view.