Mirror-Image Gate Driver Stages for Compact Display Substrates
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Solution Overview
Problem
Conventional display apparatuses require a large number of conductive lines for signal transmission, which increases the complexity and size of the driving circuits, limiting the miniaturization and efficiency of display devices.
Innovation Solution
The proposed solution involves a gate driver configuration with fewer connection lines, where stages are designed as mirror images of each other, and conductive lines split into branches to connect multiple stages, reducing the overall number of lines needed and allowing for a more compact design.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If each signal line is individually connected to each stage, then signal transmission reliability is improved, but device complexity and area increase
Solution Approach 1:
Multiple signal lines that were previously individually connected to each stage are merged into shared conductive lines. The patent shows that clock signals and voltage signals are routed through common conductive lines that serve multiple stages, reducing the total number of connection lines while maintaining proper signal distribution to all required stages.
Solution Approach 2:
Conductive lines are designed to serve multiple functions and multiple stages simultaneously. A single conductive line carries signals to multiple shift register stages, making the line universal in its function. This multi-functionality approach reduces the overall number of conductive lines needed in the gate driver circuit.
2Volume of moving object
If driving circuits are formed on the display substrate, then display device size is reduced, but manufacturing complexity increases
Solution Approach 1:
The gate driver circuit is segmented into multiple shift register stages that are cascade-connected. Each stage is a modular unit that can be independently designed and manufactured, then connected in sequence. This segmentation allows the driving circuit to be formed on the display substrate in a systematic way that manages manufacturing complexity while achieving miniaturization.
3Area of stationary object
If the number of conductive lines is reduced, then device area is reduced, but signal transmission quality may deteriorate
Solution Approach 1:
The patent utilizes multiple conductive layers to route signals in three-dimensional space rather than relying solely on planar line routing. By stacking conductive lines in different layers, the design reduces the number of lines needed in any single plane while maintaining proper signal connections and reducing interference, thus preserving signal quality in a compact area.
Data Source
AI summary
A display apparatus includes a substrate and a display area and a peripheral area on the substrate. The peripheral area is outside the display area, and a gate driving circuit is disposed in the peripheral area. The gate driving circuit includes a first stage coupled to a first gate line and a second stage coupled to a second gate line, and the first stage and the second stage are configured as mirror images of each other.