Display Panel Frame Refresh Control for Power Reduction
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Solution Overview
Problem
Conventional display devices consume unnecessary power when showing static images due to continuous refresh of display pixels, leading to increased energy consumption and operational costs.
Innovation Solution
Incorporating active switches electrically connected to data lines and a control module that turns off switches when the current frame image is the same as the previous frame image, allowing for selective refresh of display areas and reducing power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous refresh of display pixels is implemented, then display image quality is maintained, but power consumption increases unnecessarily during static image display
Solution Approach 1:
The patent implements dynamic refresh rate adjustment by comparing current frame image data with previous frame image data. When changes are detected, the refresh rate increases to 60Hz; when no changes are detected (static image), the refresh rate decreases to reduce power consumption. This dynamic adaptation resolves the contradiction between maintaining display quality and reducing energy usage.
Solution Approach 2:
The patent changes the refresh rate parameter based on image content characteristics. By detecting whether the current frame differs from the previous frame, the system adjusts the refresh frequency parameter accordingly - maintaining high refresh rates for dynamic content while lowering them for static content, thus optimizing the balance between image quality and power consumption.
2Use of energy by moving object
If refresh rate is reduced for static images, then power consumption decreases, but display responsiveness may be affected
Solution Approach 1:
The patent employs feedback mechanisms by continuously comparing current frame image data with previous frame data. This feedback loop detects image changes and dynamically adjusts the refresh rate accordingly. When changes are detected, the system immediately increases refresh rate to maintain responsiveness, thus resolving the contradiction between power saving and display responsiveness.
Solution Approach 2:
The system dynamically adjusts refresh rate based on real-time detection of image changes. This dynamic behavior ensures that display responsiveness is maintained when needed (during image changes) while power consumption is reduced during static periods, effectively resolving the speed-power consumption tradeoff.
Data Source
AI summary
Disclosed is a display panel. The display panel includes: a substrate; a plurality of data lines, formed in a display area of the substrate; a data driving circuit, used for driving the data lines; an active switches, connected to the data driving circuit and the data lines; and a control module, coupled with a control ends of the active switches. The control module controls the active switch to be switched off while the previous frame of image information is the same as the current frame of image information.