Alternating Gate Driver Stages for Stable Large-Area Displays
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Solution Overview
Problem
Existing display apparatuses face challenges in stably outputting gate signals while expanding the display area, leading to inefficiencies in pixel driving circuits.
Innovation Solution
A display apparatus design featuring a first and second driving circuit with alternately arranged odd and even-numbered stages, utilizing phase-shifted clock signals and independent control of start signals to stabilize gate signal output across a larger display area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a single driving circuit is used to output gate signals, then the device complexity is low, but the display area cannot be expanded and signal stability deteriorates
Solution Approach 1:
The gate driver is divided into multiple independent driving circuits (first driving circuit and second driving circuit), each responsible for different gate lines. This segmentation allows the display area to be expanded while maintaining manageable complexity in each individual driving circuit.
Solution Approach 2:
The patent introduces a dual-directional driving approach by arranging driving circuits on both sides of the display area, effectively utilizing spatial dimensions to expand the display area without proportionally increasing the complexity of each driving circuit.
2Area of stationary object
If multiple driving circuits are used to expand display area, then the display area increases, but signal stability and gate signal output reliability worsen
Solution Approach 1:
Multiple driving circuits are merged through a unified control mechanism where all driving circuits receive synchronized clock signals and coordinated start signals from a single controller, ensuring synchronized operation and maintaining gate signal stability across the expanded display area.
Solution Approach 2:
The patent implements a coordinated control system where the controller monitors and adjusts the operation of multiple driving circuits, ensuring that gate signals are output with consistent timing and voltage levels across all driving circuits, thereby maintaining signal reliability.
3Area of stationary object
If driving circuits are arranged to cover larger area, then the display area expands, but the complexity of signal coordination and control increases
Solution Approach 1:
All driving circuits are designed with identical functional modules and control interfaces, allowing them to operate independently yet be controlled through a universal control mechanism. This universality simplifies signal coordination by ensuring each driving circuit responds to the same control signals in the same manner.
Solution Approach 2:
The patent employs periodic clock signals to synchronize the operation of multiple driving circuits. Each driving circuit operates in periodic cycles controlled by the clock signal, which simplifies the coordination of signals across multiple circuits by providing a regular, predictable timing framework.
Data Source
AI summary
Provided is a display apparatus including a first driving circuit including odd-numbered first stages among first stages that output a first gate signal to pixels and even-numbered second stages among second stages that output a second gate signal to the f pixels, and a second driving circuit including odd-numbered second stages among the second stages and even-numbered first stages among the first stages. In the first driving circuit, the odd-numbered first stages and the even-numbered second stages are arranged alternately. In the second driving circuit, the odd-numbered second stages and the even-numbered first stages are arranged alternately.