Branched Gate Driving Circuit for Zero-Bezel Multi-Screen Displays
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Solution Overview
Problem
Multi-screen display apparatuses suffer from a sense of discontinuity due to bezel areas between adjacent display units, leading to reduced viewer immersion, as existing gate-in-panel structures necessitate a bezel or covering mechanism, which complicates the configuration and increases manufacturing costs.
Innovation Solution
A display apparatus with a zero-bezel width design, featuring a gate driving circuit integrated within the display area, utilizing branch circuits and network lines to minimize line capacitance deviation and eliminate the need for a bezel, thereby ensuring seamless image display across multiple screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a gate driving circuit is embedded into a non-display area of a display panel, then the configuration of circuit elements is simplified and manufacturing cost is decreased, but a bezel area is created requiring a bezel or covering mechanism
Solution Approach 1:
The gate driving circuit is moved from the traditional non-display area (2D plane outside the display region) into the display area itself, utilizing the pixel circuit space. This dimensional repositioning eliminates the need for a separate bezel area while maintaining circuit functionality.
Solution Approach 2:
The gate driving circuit is merged with the pixel circuit area, combining two previously separate functional regions. The gate driving circuit shares the display area with the pixel circuits, eliminating the need for a dedicated bezel region and reducing overall device complexity.
2Reliability
If a bezel or covering mechanism is used to cover the gate driving circuit, then the circuit is protected, but the immersion of the viewer is reduced due to the boundary portion
Solution Approach 1:
The gate driving circuit is extracted from the non-display area and repositioned within the display area. This extraction eliminates the need for a bezel or covering mechanism, removing the boundary portion that disrupts viewer immersion while the circuit remains protected within the integrated structure.
3Area of moving object
If multiple display apparatuses are arranged in a lattice type to create a large screen, then a multi-screen display is achieved, but boundary portions such as seams are formed between adjacent display apparatuses
Solution Approach 1:
Multiple display apparatuses are merged into a unified structure where the gate driving circuits of adjacent displays are integrated within the shared display area. This merging eliminates the physical separation and seam formation, creating a continuous image across the multi-screen display while maintaining the large overall screen area.
Data Source
AI summary
A display includes a display area having pixels arranged along a first direction and a second direction crossing the first direction over a substrate. Gate lines, data lines, and reference voltage lines are disposed at the display area and are coupled to the pixels. A gate driving circuit includes stage circuit units disposed at the display area and coupled to each of the gate lines. The stage circuit units include branch circuits divisionally disposed between the pixels along the first direction and a branch network disposed at a network line formation portion positioned at one side of each of the pixels disposed along the first direction. The branch network includes control node lines and network lines selectively coupled to the branch circuits. An additional pattern portion is disposed at the network line formation portion to overlap a reference voltage line disposed at each of some of the pixels.