GOA Circuit Segmentation for Flexible Display Power Reduction
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Solution Overview
Problem
Display apparatuses face high power consumption due to the need to display dark borders or spacing for different video resolutions, even when these areas do not contain images, leading to inefficient energy use.
Innovation Solution
A Gate Driver on Array (GOA) circuit with a switch control unit that turns off GOA units corresponding to unused video resolution areas, reducing power consumption by selectively activating only necessary display regions, and a flexible display apparatus with a movable structure that reconfigures screen areas to eliminate dark borders and optimize power usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If dark borders or spacing are displayed to accommodate different video resolutions, then the display can show images with appropriate aspect ratio, but power consumption increases because the dark borders still consume energy
Solution Approach 1:
The display screen is divided into multiple display areas, each corresponding to different video resolutions. The GOA circuit is segmented into multiple groups that can be independently controlled. When a specific video resolution is detected, only the corresponding display area and its associated GOA group are activated, while other areas remain inactive, thereby reducing power consumption while maintaining display compatibility across different resolutions
Solution Approach 2:
The display system dynamically adjusts the active display area based on the detected video resolution. The GOA circuit groups are dynamically activated or deactivated according to the current video content requirements. This dynamic adaptation allows the display to optimize power consumption in real-time while maintaining appropriate aspect ratio display for different video resolutions
2Adaptability or versatility
If all GOA units are kept active to support multiple video resolutions, then the display can adapt to different aspect ratios, but power consumption increases
Solution Approach 1:
The GOA circuit is divided into multiple independently controllable groups, where each group corresponds to a specific video resolution. This segmentation enables the system to activate only the necessary GOA units for the current video format, rather than keeping all units active, thus maintaining versatility while reducing power consumption
Solution Approach 2:
Each GOA group is designed to handle specific video resolutions, and the system can switch between different groups based on the video content. This multi-functional design allows a single display apparatus to support multiple video resolutions without requiring all GOA units to be simultaneously active, achieving universality with energy efficiency
Data Source
AI summary
The present disclosure provides a GOA (gate driver on array) circuit for a display screen. The GOA circuit includes at least one GOA group, including a plurality of GOA units connected in series, and a switch control unit configured to transmit control signals. In each of the at least one GOA group, a first-stage GOA unit is connected to a frame-start signal. At least one edge GOA unit is connected to a control signal through the switch control unit. The edge GOA unit being any one of the plurality of GOA units except for the first-stage GOA unit and a last-stage GOA unit.