Back-Gate Driving Circuit for Stable Low-Power Gate Signals
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Solution Overview
Problem
Existing display apparatuses face challenges in stably outputting gate signals at low power consumption, which affects the efficiency and reliability of the display.
Innovation Solution
A driving circuit design incorporating specific transistor configurations and capacitor arrangements, including N-channel and P-channel transistors with back-gate voltage control, to stabilize gate signal output while reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional transistors are used in the driving circuit, then the circuit can operate with simpler structure, but the gate signal output becomes unstable and power consumption increases
Solution Approach 1:
The patent applies parameter changes by utilizing back-gate voltage control to dynamically adjust the threshold voltage of transistors. By changing the voltage applied to the back gate, the circuit can optimize transistor operation points to achieve stable gate signal output while minimizing power consumption. This is evident in the use of variable voltage inputs connected to back gates of various transistors in the circuit.
2Reliability
If conventional transistors without back-gate control are used, then the circuit structure is simpler, but threshold voltage shifts cause instability in signal output
Solution Approach 1:
The patent implements back-gate voltage control to dynamically adjust transistor threshold voltages, compensating for threshold voltage shifts that occur during operation. This parameter control mechanism allows the circuit to maintain stable signal output despite variations in operating conditions, directly addressing the reliability issue while accepting increased device complexity.
3Reliability
If the driving circuit uses standard transistor configurations, then manufacturing is easier, but power consumption is high and signal stability is poor
Solution Approach 1:
The patent employs back-gate voltage control to optimize transistor performance parameters, enabling stable gate signal output and low power consumption. While this approach increases fabrication complexity compared to standard transistors, it provides superior electrical performance that justifies the additional manufacturing steps.
4Use of energy by moving object
If power consumption is reduced in the driving circuit, then energy efficiency improves, but gate signal output stability deteriorates
Solution Approach 1:
The patent uses back-gate voltage control to optimize the operating point of transistors, enabling the circuit to achieve both low power consumption and stable gate signal output. By dynamically adjusting threshold voltages through back-gate control, the circuit can operate in optimal regions that balance power efficiency with signal stability.
Data Source
AI summary
A stage of a driving circuit includes seventh and eighth transistors electrically connected between a first terminal for receiving a first voltage and a second terminal for receiving a second voltage that is lower than the first voltage, ninth and tenth transistors electrically connected between the first and second terminals, and a fourth transistor including a gate electrically connected to a first node configured to receive the start signal and a back gate electrically connected to a third node, and electrically connected between the second terminal and a second node to which a gate of the eighth transistor is electrically connected, a fifth transistor electrically connected between the first node and the third node, and including a gate electrically connected to the second terminal, and a second capacitor electrically connected to the third node and to a second output node between the ninth and tenth transistors.