Gate Driving Circuit Using Segmented Shift Registers for LCDs
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Solution Overview
Problem
Existing gate driving circuits for liquid crystal displays (LCDs) have low operating speed, making it difficult to drive the required number of gate lines efficiently, especially for smooth display of moving images.
Innovation Solution
A gate driving circuit using multiple shift registers, each with multiple stages, where the start signals are shifted by 1/p among p shift registers, allowing for sequential driving of gate lines divided into p groups, with each stage having input, clock, control, and output terminals to manage gate driving signals effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single shift register is used to drive gate lines, then the device complexity is low, but the operating speed is insufficient to drive the required number of gate lines
Solution Approach 1:
The gate driving circuit is segmented into multiple shift registers (first, second, third, and fourth shift registers), each responsible for driving a specific group of gate lines. This segmentation allows parallel operation of multiple shift registers, thereby increasing the total number of gate lines that can be driven while distributing the complexity across modular units rather than concentrating it in a single complex register.
2Speed
If the gate driving circuit is configured with traditional single shift register, then the circuit structure is simple, but it cannot achieve the required operating speed for smooth moving image display
Solution Approach 1:
The gate driving circuit is divided into multiple independent shift registers that operate in parallel, with each shift register handling a specific group of gate lines. This segmentation enables simultaneous driving of multiple gate lines across different groups, thereby increasing the overall operating speed to meet the requirement for smooth moving image display while distributing the circuit complexity across manageable modular units.
Data Source
AI summary
A gate driving circuit and a display device having the same, in which the gate lines can be divided into p groups using p shift registers and p-time gate lines can be driven using a signal shifted by 1/p, wherein p is an arbitrary natural number of three or more. Accordingly, since a number of gate lines can be driven using the plurality of shift registers, high-resolution display devices can be manufactured at a low cost.