Display Device Gamma Parameter Adjustment for Thermal Management
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Solution Overview
Problem
Wearable display devices face challenges with low luminescence efficiency, leading to high drive voltage requirements that increase temperature and risk damage to the display module, resulting in poor user experience and potential module failure.
Innovation Solution
A display device with a temperature sensor and controller that adjusts the gamma parameter and drive voltage to maintain optimal luminance while reducing temperature, using a corresponding relationship of temperature ranges and gamma parameters to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the drive voltage is increased to compensate for low luminescence efficiency, then the luminance is improved, but the temperature increases and the display module may be damaged
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the gamma parameter of the display module based on detected temperature. When temperature exceeds a threshold, the controller reduces the gamma parameter, which changes the voltage-luminance relationship and allows maintaining luminance at lower drive voltages, thus reducing temperature while preserving display quality.
2Illumination intensity
If the drive voltage is increased to maintain luminance, then the luminance is improved, but the risk of display module damage increases
Solution Approach 1:
The patent implements feedback by using a temperature sensor to continuously monitor the display module temperature and feeding this information back to the controller. The controller then adjusts the gamma parameter based on the temperature feedback, creating a closed-loop control system that maintains luminance while preventing temperature-induced damage and improving overall reliability.
3Temperature
If the gamma parameter is adjusted to reduce drive voltage, then the temperature is reduced, but the luminance may be affected
Solution Approach 1:
The patent applies dynamics by making the gamma parameter adjustable rather than fixed. The controller dynamically modifies the gamma parameter based on real-time temperature conditions, allowing the system to optimize between luminance and temperature control. This dynamic adjustment ensures that luminance is maintained within acceptable ranges while temperature is reduced through lower drive voltages when conditions permit.
Data Source
AI summary
Provided is a display device. The display device includes a controller, a display module, and a temperature sensor disposed in the display module; wherein the controller is connected to the display module and the temperature sensor; the temperature sensor is configured to detect a temperature of the display module; and the controller is configured to: adjust a gamma parameter of the display module to a target gamma parameter corresponding to the temperature of the display module; determine a target drive voltage required by the display module with the target gamma parameter; and drive, based on the target drive voltage, the display module to display an image.