Shift Register Unit Selective Scanning for Display Power Reduction
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Solution Overview
Problem
Current display technologies face challenges in achieving high resolution and refresh rates, leading to issues like dynamic blur and ghosting, especially in VR, AR, and gaming applications, which increase data transmission bandwidth and power consumption, affecting user experience.
Innovation Solution
A shift register unit and display panel design that selectively scans gate lines in visuosensory and non-visuosensory areas, using cascaded shift register units and a driving method to optimize clock signal transmission, reducing unnecessary data updates and scanning time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If full-screen scanning is performed to achieve high resolution and refresh rates, then display quality is improved, but data transmission bandwidth and power consumption increase
Solution Approach 1:
The display screen is divided into a visuosensory area and a non-visuosensory area. The shift register selectively scans only the visuosensory area, segmenting the scanning operation to exclude regions that do not contribute to user perception quality, thereby reducing power consumption while maintaining display quality in the visible region.
Solution Approach 2:
Different scanning strategies are applied to different regions of the display. The visuosensory area receives full scanning to ensure high display quality, while the non-visuosensory area is excluded from scanning to reduce power consumption. This local differentiation optimizes the balance between display quality and energy usage.
2Manufacturing precision
If full-screen scanning is performed to achieve high resolution and refresh rates, then display quality is improved, but data transmission bandwidth increases
Solution Approach 1:
The scanning operation is segmented to process only the visuosensory area, reducing the total number of pixels that require data transmission. This segmentation decreases the data bandwidth requirement while preserving display quality in the visually relevant region.
Solution Approach 2:
The non-visuosensory area is extracted and excluded from the scanning process. By removing this portion from the data transmission pipeline, the overall data bandwidth requirement is reduced without impacting the perceived display quality.
3Area of stationary object
If scanning is performed in non-visuosensory areas, then complete coverage is achieved, but scanning time increases
Solution Approach 1:
The non-visuosensory area is extracted and removed from the scanning process. This exclusion reduces the total scanning time by eliminating operations in regions that do not contribute to user-perceived display quality, while the visuosensory area maintains complete scanning coverage.
Solution Approach 2:
Instead of performing complete full-screen scanning, the system applies partial scanning only to the visuosensory area. This partial action is sufficient to achieve the desired display quality and coverage where it matters most, while reducing overall scanning time.
Data Source
AI summary
Provided are a shift register unit, a shift register, a display panel and a driving method thereof. The shift register unit includes: an input circuit electrically coupled to an input terminal, a first voltage terminal and a pull-up node; an output circuit electrically coupled to the pull-up node, a first clock terminal, a first scan control terminal, a first output terminal and a second output terminal; and a scan control circuit electrically coupled to the second output terminal, a second voltage terminal and a second scan control terminal. The input circuit is configured to write a first voltage provided by the first voltage terminal into the pull-up node in response to a start signal inputted to the input terminal. The output circuit is configured to output a first clock signal from the first clock terminal via the first output terminal, when the pull-up node is at the first voltage.