OLED Gamma Switching for Static Screen Power Reduction
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Solution Overview
Problem
OLED display devices face high power consumption and reduced service life due to maintaining high brightness levels for static screens, which is not sensitive to human perception.
Innovation Solution
Implement a logic board circuit to detect screen states and adjust gamma voltage data based on dynamic or static screen conditions, using different brightness curves to reduce power consumption by lowering peak brightness for static screens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high brightness levels are maintained for static screens, then display visibility is ensured, but power consumption increases and service life decreases
Solution Approach 1:
The patent implements dynamic brightness adjustment by detecting screen state (static or dynamic) and switching between different gamma voltage data sets. For static screens, the system applies reduced brightness levels while maintaining acceptable visibility, thereby reducing power consumption and extending OLED service life without compromising display functionality
Solution Approach 2:
The patent changes the brightness parameter dynamically based on screen state detection. By storing multiple gamma voltage data sets with different brightness characteristics and selecting appropriate data based on whether the screen is static or dynamic, the system optimizes the balance between visibility and power consumption
2Illumination intensity
If high brightness levels are maintained for static screens, then display visibility is ensured, but service life decreases
Solution Approach 1:
The system dynamically adjusts brightness based on screen state detection. For static screens, reduced brightness levels are applied which directly reduces stress on OLED materials, thereby extending device service life while maintaining sufficient visibility for normal use
Solution Approach 2:
By implementing multiple gamma voltage data sets with different brightness characteristics and switching between them based on screen state, the patent optimizes the operating parameters to reduce degradation of OLED materials over time, thus extending service life
3Use of energy by moving object
If different brightness curves are used for dynamic and static screens, then power consumption is reduced, but system complexity increases
Solution Approach 1:
The patent segments the gamma voltage data into multiple distinct data sets (first gamma voltage data for dynamic screens, second gamma voltage data for static screens). This segmentation allows the system to select appropriate brightness characteristics based on screen state, achieving power consumption reduction while keeping the implementation relatively simple through data classification
Solution Approach 2:
The system employs screen state detection that provides feedback to the control logic, which then selects the appropriate gamma voltage data set. This feedback mechanism enables automatic adaptation to different display scenarios, reducing power consumption without requiring complex manual intervention or configuration
Data Source
AI summary
An organic light emitting diode display method comprises: converting a video signal into a digital signal, and detecting a screen state displayed corresponding to the video signal; when the screen state is a dynamic screen, outputting first gamma voltage data being configured to control the dynamic screen to be displayed according to a first brightness curve; when the screen state is a static screen, outputting second gamma voltage data being configured to control the static screen to be displayed according to a second brightness curve, wherein the peak value of the first brightness curve being greater than the peak value of the second brightness curve; and receiving the digital signal and the first gamma voltage data or the second gamma voltage data, and performing display correspondingly according to the digital signal and the first gamma voltage data or the second gamma voltage data.