Display Device Multi-Scanning Gate Lines Motion Picture Response Time
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Solution Overview
Problem
Existing display devices suffer from long motion picture response times, leading to afterimages of previous frames being displayed on subsequent frames, which degrades image quality.
Innovation Solution
A display device with a new subpixel structure and driving method that includes a multi-scanning operation and the intermittent display of fake images, such as black images, to improve motion picture response time by controlling the bias state of subpixels through on/off control of switching devices without supplying fake image data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If conventional display driving methods are used, then the display structure is simple, but the motion picture response time is long causing afterimages
Solution Approach 1:
The gate lines are divided into two separate sets: first gate lines for normal image display and second gate lines for inserting fake images. This segmentation allows independent control of real and fake image display timing, enabling motion picture response time improvement without complicating the overall display structure
Solution Approach 2:
Fake images are inserted periodically between real images at specific timing intervals. The gate driving circuit alternates between driving first gate lines (for real images) and second gate lines (for fake images) in a periodic manner, creating regular black image insertion that clears afterimages while maintaining simple display hardware
2Loss of time
If fake images are intermittently displayed to improve motion picture response time, then image quality improves, but the driving method becomes more complex
Solution Approach 1:
The gate driving circuit is pre-configured with two separate gate line sets and their corresponding driving circuits. This preliminary structure enables automatic insertion of fake images at predetermined timing without requiring complex real-time processing or complicated driving operations during display
Solution Approach 2:
The fake images are generated as simplified copies (typically black images or low-grayscale images) that mimic the structure of real images but with reduced complexity. These copied fake images are inserted at specific timing to clear afterimages without requiring complex image processing operations
3Loss of time
If multi-scanning operation with separate gate lines is used, then motion picture response time is reduced, but the number of components increases
Solution Approach 1:
The display panel is segmented into regions controlled by first gate lines and regions controlled by second gate lines. Each segment uses standard transistor structures (first transistors and second transistors) that are already present in conventional displays, so the segmentation reuses existing components rather than adding new types of components
Solution Approach 2:
The first transistors and second transistors serve multiple functions: they control both real image display (when driven by first gate lines) and fake image display (when driven by second gate lines). This multi-functionality allows the same transistor structures to handle both display modes, reducing the need for additional specialized components
Data Source
AI summary
Embodiment of the present disclosure relate to a display device, a controller, a driving circuit, and a driving method capable of easily improving the motion picture response time through a multi-scanning operation of switching devices.