Data Driving Circuit Adjusting Color Temperature for Power Reduction
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Solution Overview
Problem
Display devices face increased power consumption as the amount of total current supplied to the display panel increases, necessitating a method to minimize power consumption while maintaining image quality.
Innovation Solution
A data driving circuit and display device that calculate and adjust the panel driving current based on the color temperature of the image displayed, selecting a color temperature that minimizes power consumption without affecting the user's perception of the image.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the amount of total current supplied to the display panel is increased to improve image quality and luminance, then the display performance is improved, but the power consumption of the display device increases
Solution Approach 1:
The patent applies parameter changes by adjusting the color temperature of the displayed image to optimize power consumption. The controller modifies the color temperature parameter based on the content type and viewing conditions, allowing the display panel to operate at different current levels while maintaining acceptable image quality. This resolves the contradiction by finding optimal operating points that balance luminance and power consumption.
2Use of energy by moving object
If the panel driving current is reduced to minimize power consumption, then the power consumption decreases, but the luminance and image quality may deteriorate
Solution Approach 1:
The patent implements dynamics by making the color temperature adjustable and adaptive rather than fixed. The controller dynamically changes the color temperature parameter in real-time based on the displayed content, ambient lighting conditions, and power consumption requirements. This allows the system to optimize the balance between luminance and power consumption for different operating scenarios.
Solution Approach 2:
The patent uses parameter changes by modifying the color temperature parameter to achieve optimal power consumption. By changing this key parameter, the system can operate at lower current levels while maintaining acceptable image quality, thus reducing power consumption without significant sacrifice in luminance.
3Use of energy by moving object
If the color temperature is adjusted to optimize power consumption, then the panel driving current is minimized, but the displayed image may show noticeable differences in color temperature
Solution Approach 1:
The patent applies dynamics by making color temperature adaptive and context-dependent. The controller dynamically adjusts color temperature based on content type (e.g., warm tones for evening scenes, cool tones for daytime scenes) and viewing conditions. This dynamic adjustment optimizes power consumption while maintaining visual comfort and minimizing noticeable color shifts.
Solution Approach 2:
The patent implements local quality by applying different color temperature characteristics to different parts of the displayed content or different viewing scenarios. Instead of a uniform color temperature for all content, the system applies optimized color temperature profiles locally for different content types and viewing conditions, balancing power consumption with visual quality.
Data Source
AI summary
Embodiments of the present disclosure relate to a data driving circuit and a display device. In the process of a display device converting an image data received from an outside into a data signal supplied to a data driving circuit, a final color temperature target represented by the image is variably set based on a panel driving current, so that the power consumption of a display panel displaying an image can be minimized. In addition, since the final color temperature target is varied, the luminance of the image and the user's recognition level are maintained constant, thereby improving the efficiency of the display device.