OLED Pixel Circuit Gate Driving Consolidation
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Solution Overview
Problem
The existing pixel circuits in OLED display panels require multiple gate driving circuits, which increase the complexity and frame size of the display panel, making it difficult to achieve a narrow frame and high production efficiency.
Innovation Solution
A pixel circuit design that incorporates a driving circuit, data writing circuit, and light-emitting control circuits, where the driving signals, including the scanning and light-emitting control signals, are provided by a single gate driving circuit, reducing the layout space required for gate driving circuits and facilitating a narrower frame and lower production costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple gate driving circuits are used to provide scanning signals and light-emitting control signals, then the display panel achieves reliable pixel control, but the frame size increases and manufacturing complexity increases
Solution Approach 1:
The patent merges the functions of multiple gate driving circuits into a single integrated gate driving circuit that sequentially provides both scanning signals and light-emitting control signals to the pixel circuit. This consolidation reduces the frame size by eliminating redundant circuit components while maintaining reliable pixel control through time-multiplexed signal delivery.
Solution Approach 2:
The single gate driving circuit is designed with multi-functionality to perform both scanning operations and light-emitting control operations. By making the gate driving circuit universal, it can deliver different types of control signals at different time periods, thereby reducing the number of dedicated circuits needed and shrinking the overall frame size.
2Reliability
If multiple gate driving circuits are used to provide scanning signals and light-emitting control signals, then the display panel achieves reliable pixel control, but the manufacturing complexity increases
Solution Approach 1:
The patent combines multiple separate gate driving circuits into one unified circuit, reducing manufacturing complexity by decreasing the number of components that need to be fabricated, assembled, and tested. The merged circuit maintains pixel control reliability through intelligent time-multiplexed signal generation and delivery.
Solution Approach 2:
By designing a universal gate driving circuit capable of performing multiple functions (scanning and light-emitting control), the patent simplifies the overall device architecture. This multi-functional approach reduces manufacturing steps and assembly complexity while ensuring reliable pixel operation through programmed signal sequences.
3Area of stationary object
If a single gate driving circuit provides both scanning signals and light-emitting control signals, then the frame size is reduced and production efficiency improves, but the signal timing control becomes more complex
Solution Approach 1:
The single gate driving circuit is pre-programmed with predetermined timing sequences to automatically generate and deliver scanning signals and light-emitting control signals at the correct times. This preliminary configuration of signal timing eliminates the need for complex real-time adjustments and simplifies the control mechanism while maintaining accurate signal synchronization.
Solution Approach 2:
The gate driving circuit employs periodic action by sequentially and alternately providing scanning signals during a first time period and light-emitting control signals during a second time period. This rhythmic, time-multiplexed signal delivery simplifies timing control through regular patterns while achieving the dual function of pixel addressing and light emission control.
Data Source
AI summary
A pixel circuit, a display panel, and a method for driving a pixel circuit are disclosed. The pixel circuit includes a driving circuit, a data writing circuit, and a first light-emitting control circuit. The driving circuit is configured to control a driving current for driving a light-emitting component to emit light, the data writing circuit is configured to write a data signal into the driving circuit in response to a scanning signal, the first light-emitting control circuit is configured to apply a first voltage of a first voltage terminal to the driving circuit in response to a first light-emitting control signal, and the first light-emitting control signal and the scanning signal are provided by a same gate driving circuit.