Display Panel Gamma Amplifier Gating for Simple-Color Regions
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Solution Overview
Problem
Existing display devices face challenges in reducing power consumption, particularly in regions displaying only predetermined colors, as all amplifiers and processing blocks remain active, leading to unnecessary energy usage.
Innovation Solution
A display device that divides the display region into a normal region and a simple display region with predetermined colors, generates a flag signal during the simple display region, and disables a portion of amplifiers and processing blocks in response to this signal, maintaining only essential amplifiers and blocks active.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If all amplifiers remain active to ensure complete gamma voltage coverage, then display quality is maintained, but power consumption increases
Solution Approach 1:
The patent implements dynamic control of amplifier activation by introducing a flag signal that responds to display content characteristics. The controller dynamically enables or disables specific amplifiers based on whether the current frame contains simple display regions (e.g., uniform color regions), allowing the system to adapt its power consumption to actual display needs while maintaining quality when necessary.
Solution Approach 2:
The patent applies local quality by differentiating amplifier activation based on spatial regions of the display. When certain regions contain only predetermined colors (simple display regions), the system selectively disables specific amplifiers that correspond to those regions, while keeping other amplifiers active for regions requiring full gamma voltage coverage. This localized approach reduces overall power consumption without compromising display quality in complex regions.
2Use of energy by moving object
If all processing blocks remain active to handle complex image processing, then image quality is maintained, but power consumption increases
Solution Approach 1:
The patent implements dynamic control of processing block activation through the flag signal mechanism. When the display content is identified as containing simple display regions, the controller dynamically disables specific processing blocks that would otherwise be active, reducing power consumption. This dynamic adaptation allows the system to process only the necessary portions of image data at full quality while using simplified processing for regions where it suffices.
3Productivity
If the system processes all display regions with full complexity to ensure quality, then display quality is maintained, but processing time increases
Solution Approach 1:
The patent applies segmentation by dividing the display region into simple display regions and complex display regions based on content analysis. This segmentation allows the system to apply different processing strategies to different regions: simplified processing for simple regions (reducing processing time) and full processing for complex regions (maintaining quality). The flag signal serves as a marker that enables this segmented processing approach.
Data Source
AI summary
A display device includes a display panel including a plurality of pixels, a scan driver configured to provide scan signals to the plurality of pixels, a gamma voltage generator including a plurality of amplifiers that output a plurality of gamma voltages, a data driver configured to generate data voltages based on the plurality of gamma voltages, and to provide the data voltages to the plurality of pixels, and a controller configured to divide a display region of the display panel into a normal region and a simple display region having only predetermined colors, and to generate a flag signal having an active level in a time period corresponding to the simple display region within a frame period. The gamma voltage generator is configured to disable at least a portion of the plurality of amplifiers in response to the flag signal having the active level.