Pixel Circuit Gating for Multi-Rate Display Panel Refresh
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Solution Overview
Problem
Current display devices maintain a uniform screen refresh frequency across all display areas, failing to achieve optimal display effects when different display areas require different refresh frequencies.
Innovation Solution
Incorporating a gating module into the display panel's pixel circuit to optimize the operating frequency, allowing for varying screen refresh frequencies without altering the driving circuit's control signal pulse frequency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a uniform screen refresh frequency is maintained across all display areas, then the driving circuit's control signal frequency remains consistent and simple, but different display areas cannot achieve optimal display effects when displaying different contents
Solution Approach 1:
The display panel is divided into multiple independent display areas (first display area and second display area), each capable of operating at different refresh frequencies. The pixel circuits in different areas can be independently controlled by separate gating modules, allowing each segment to optimize its refresh rate according to the displayed content requirements.
Solution Approach 2:
The refresh frequency of each display area is made dynamically adjustable through independent gating modules that can selectively enable or disable pixel circuits in different areas. This allows the system to adaptively change refresh rates based on content requirements, transitioning between uniform and differential refresh modes as needed.
2Productivity
If different display areas operate at different refresh frequencies, then optimal display effects can be achieved for different contents, but the device complexity increases due to additional gating modules and control mechanisms
Solution Approach 1:
The gating module is designed with multi-functionality, serving both as a selection switch for different display areas and as a frequency control mechanism. The same gating module structure can be replicated across different areas, providing a universal solution that manages complexity through standardization rather than requiring entirely different control mechanisms for each area.
Solution Approach 2:
The gating module is integrated within the pixel circuit structure, with the gating transistor nested among other pixel circuit components. This nesting approach allows the frequency control functionality to be embedded within the existing pixel circuit framework, minimizing additional space and reducing overall structural complexity.
3Adaptability or versatility
If the gating module is integrated into the pixel circuit, then independent refresh rate adjustment is enabled, but the pixel circuit structure becomes more complex
Solution Approach 1:
The gating module's control functionality is merged with the existing pixel circuit operations. The gating transistor shares control signals with other pixel circuit components, and its switching action is coordinated with the existing scan and data signal timing. This merging reduces the need for entirely separate control pathways and integrates frequency control into the existing circuit fabric.
Data Source
AI summary
A display panel and a display device are provided. The display panel includes a pixel circuit including a driving transistor and a preset module, a light-emitting element, a driving circuit, and a gating module. A first terminal of the preset module is connected to the driving transistor, a second terminal of the preset module is connected to a preset signal terminal or the driving transistor, a control terminal of the preset module is connected to a control signal line, and the control signal line is configured to receive a control signal. The driving circuit is configured to provide the control signal for the control signal line. The gating module is connected between the control terminal of the preset module and the driving circuit. The gating module is connected to a gating signal line, and the gating signal line is configured to receive a gating signal.