Integrated Stage Circuit for Scan and Emission Signal Output
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Solution Overview
Problem
Existing display devices face challenges in optimizing the use of space due to separate components for supplying scan and emission control signals, leading to inefficiencies and increased dead space.
Innovation Solution
A stage circuit design that integrates both scan and emission control signals, reducing the need for separate components and optimizing space utilization by combining these functions into a single circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If separate components are used to supply scan and emission control signals, then signal control functionality is complete, but dead space increases and space utilization deteriorates
Solution Approach 1:
The patent merges the scan signal supply function and emission control signal supply function into a single stage circuit. The stage circuit includes a scan signal output unit that outputs scan signals and an emission control signal output unit that outputs emission control signals, both integrated within one circuit structure. This consolidation eliminates the need for separate components and reduces dead space in the display unit while maintaining complete signal control functionality.
Solution Approach 2:
The stage circuit is designed as a multi-functional component that simultaneously performs multiple tasks: it generates scan signals for scanning rows, generates emission control signals for controlling light emission, and manages timing coordination between these functions. By making the stage circuit universal and multi-functional, the patent eliminates the need for dedicated separate components for each function, thereby reducing overall device footprint.
2Reliability
If separate components are used for scan and emission control, then functional independence is maintained, but device complexity increases
Solution Approach 1:
The patent combines multiple functional units (scan signal generation, emission control signal generation, and timing control) into a single stage circuit. This integration reduces the number of separate components and interconnections required, simplifying the overall device architecture while maintaining the functional independence needed for reliable operation through dedicated output units within the integrated circuit.
Data Source
AI summary
A stage circuit includes five input terminals, three power input terminals, and three output terminals. An input circuit connects to the first and second input terminals and regulates the voltage at a first node. A driver circuit, connected to all three power input terminals, controls the voltages at both the first and a second node. A first output circuit supplies a carry signal to the third output terminal, based on the voltages at the first and second nodes. A second output circuit provides a scan signal to the first output terminal, also based on the voltages at these nodes. A third output circuit, connected to the first and second power input terminals, delivers an emission control signal to the second output terminal, determined by the voltages of a third node (connected to the first node) and a fourth node (connected to the second node).