Gate Driving Circuit Voltage Loss Reduction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional gate driving circuits in liquid crystal display technology face issues with voltage loss and delayed generation of scanning driving signals due to high-reference level division by multiple transistors, affecting normal panel operation and driving capability.
Innovation Solution
A gate driving circuit design incorporating an input circuit, reset and control circuit, inverting circuit, and output circuit with specific transistor configurations and logic gates (NAND gates and inverters) to generate and process control signals, reducing voltage loss and enhancing signal generation speed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If high-reference level is divided by multiple transistors to generate scanning driving signals, then the circuit can operate, but voltage loss occurs and signal generation speed decreases
Solution Approach 1:
The gate driving circuit is divided into multiple independent functional modules: input circuit, reset and control circuit, inverting circuit, latch circuit, and output circuit. Each module processes signals independently, preventing cumulative voltage loss that would occur in a single long signal path with multiple transistors.
Solution Approach 2:
Control signals are introduced as intermediary elements to manage the transmission of scanning driving signals. These control signals coordinate the operation of different circuit modules, enabling efficient signal generation without requiring excessive voltage division through multiple transistors.
2Reliability
If high-reference level is divided by multiple transistors to generate scanning driving signals, then the circuit can operate, but signal generation delay increases
Solution Approach 1:
The gate driving circuit is divided into multiple independent functional modules: input circuit, reset and control circuit, inverting circuit, latch circuit, and output circuit. Each module processes signals independently, reducing the cumulative delay that would occur in a single long signal path.
Solution Approach 2:
The input circuit generates control signals in advance based on up-level scanning driving signals before they are needed by subsequent stages. This preliminary signal generation reduces waiting time and accelerates the overall signal propagation through the circuit.
3Ease of manufacture
If conventional gate driving circuit is used, then manufacturing is simple, but driving capability is insufficient
Solution Approach 1:
Multiple functional circuits are merged into a single integrated gate driving circuit structure. The input circuit, reset and control circuit, inverting circuit, latch circuit, and output circuit are combined to work together, enhancing driving capability while maintaining manufacturing simplicity through integration.
Solution Approach 2:
The gate driving circuit is designed with multi-functional modules that can perform different operations. The same circuit structure can generate both normal-phase and inverting-phase scanning driving signals, and can operate at different voltage levels, providing universal functionality without requiring multiple separate circuits.
Data Source
AI summary
The present disclosure relates to a gate driving circuit and the LCD thereof. The input circuit generates second control signals in accordance with up-level normal-phase scanning driving signals, up-level inverting-phase scanning driving signals, and first control signals outputted by the latch circuit. The reset and control circuit generates third control signals in accordance with reset signals, the first control signals, and the second control signals. The inverting circuit performs an inverting process at least once toward the third control signals, and generates fourth control signals, the output circuit generates current-level normal-phase scanning driving signals and the current-level inverting-phase scanning driving signals in accordance with the fourth control signals and first clock signals, The latch circuit generates the first control signals in accordance with the third control signals and second clock signals, and latches or changes a voltage state of the third control signals in accordance with the second clock signals.