Gate Driving Circuit with Ring Control Signal Line
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Solution Overview
Problem
Existing gate driving circuits have difficulty in accurately controlling the turn-on and turn-off timings of gate lines due to their cascaded structure, which makes it hard to flexibly change these timings and is prone to being affected by transistor damage, leading to compromised display quality.
Innovation Solution
A driving unit comprising a first and second driving sub-circuit with switching elements, including transistors, and a driving control circuit that outputs control signals to manage the states of these elements, allowing for flexible control of gate line timings and redundancy to mitigate transistor damage effects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a cascaded structure is used in the gate driving circuit, then the circuit can be simplified, but the control precision of gate line timings deteriorates
Solution Approach 1:
The gate driving circuit is divided into multiple independent driving units, each capable of controlling a specific gate line. Each driving unit includes independent switching elements that can be controlled separately, allowing precise timing control for each gate line while maintaining overall circuit simplicity through modular design.
Solution Approach 2:
The circuit introduces controllable switching elements (transistors) that can dynamically change their state between on and off. This dynamic control allows flexible adjustment of gate line timing by controlling when each switching element turns on and off, enabling precise timing control without complex cascaded structures.
2Device complexity
If traditional gate driving circuits are used, then the circuit structure is simple, but the reliability deteriorates due to susceptibility to transistor damage
Solution Approach 1:
The circuit design incorporates protective mechanisms that prevent damage before it occurs. By using independent driving units with controlled switching elements, the circuit avoids conditions that would lead to transistor damage, such as excessive current or voltage spikes, thereby enhancing reliability without significantly increasing complexity.
3Ease of operation
If fixed timing control is used in gate driving circuits, then the circuit operation is simple, but the adaptability deteriorates
Solution Approach 1:
The circuit uses dynamically controllable switching elements whose on/off timing can be adjusted independently for each driving unit. This allows flexible adaptation of gate line timings based on different display requirements while maintaining simple operation through uniform control mechanisms across all driving units.
Solution Approach 2:
Each driving unit is designed with universal functionality to control different gate lines with different timing requirements. The same basic circuit structure can be applied to multiple gate lines, and by adjusting the control signals to each switching element, the circuit adapts to various timing needs without requiring different circuit designs.
Data Source
AI summary
The present disclosure relates to a driving unit, including a first driving sub-circuit, a second driving sub-circuit, and a driving control circuit. The first driving sub-circuit includes first switching elements, configured to output a first signal to the driving unit in response to a control signal from the driving control circuit. The second driving sub-circuit includes one or more second switching elements, and at least one of the second switching elements is configured to output a second signal to the driving unit in response to the control signal. The driving control circuit is configured to output the control signal at a control signal output terminal. Each of the first switching elements and second switching elements includes a transistor. Control signal input terminals of the first switching elements are coupled to the control signal output terminal through a control signal input line having a ring structure.