Data Driver Timing Adjustment for Display Power Reduction
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Solution Overview
Problem
Display devices face challenges in reducing power consumption and heat generation due to inefficient data signal timing adjustments, leading to increased voltage requirements for charging pixels.
Innovation Solution
A data driver system that adjusts the output timing of data signals based on the distance from the data driver to the pixels, using a signal controller to synchronize and convert data signals, thereby optimizing charging time and reducing power consumption by minimizing unnecessary voltage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If data signals are output with fixed timing regardless of pixel distance, then the data driver structure is simple, but power consumption increases and pixels farther away require higher voltage for charging
Solution Approach 1:
The data driver dynamically adjusts the output timing of data signals based on the distance to pixel regions. The signal controller modifies the load signal timing to advance output for farther pixels and delay for closer pixels, creating a dynamic timing adjustment system that optimizes power consumption while maintaining simple driver structure
Solution Approach 2:
The patent changes the timing parameter of data signal output based on pixel distance. By varying the output timing parameter dynamically according to distance, the system reduces power consumption without requiring structural complexity, as only the timing parameter is modified rather than the overall driver architecture
2Reliability
If data signals are output earlier for distant pixels, then pixels are charged within target time, but the timing control becomes more complex
Solution Approach 1:
The signal controller performs preliminary timing adjustment by advancing the load signal output for distant pixel regions before data signals are actually needed. This preliminary action ensures that pixels at various distances are charged within the target time window, improving reliability while keeping the control mechanism relatively simple through pre-calculated timing offsets
3Ease of operation
If uniform data signal timing is used for all pixels, then the data driver is easier to control, but voltage must be increased to ensure charging of distant pixels
Solution Approach 1:
The patent applies local quality by providing different output timing characteristics to different pixel regions based on their distance from the data driver. The signal controller adjusts timing locally for each pixel region, allowing closer pixels to receive delayed signals and farther pixels to receive advanced signals, thereby reducing overall voltage requirements while maintaining simple control through a unified timing adjustment mechanism
Data Source
AI summary
According to some example embodiments, there is provided a display device including a display panel including a plurality of pixels, a scan driver configured to provide a plurality of scan signals to the pixels through a plurality of scan lines, a data driver configured to adjust an output timing of a data signal of a plurality of data signals according to a distance from a target pixel of the pixels, and to provide the data signal to the pixels through a plurality of data lines, and a timing controller configured to control the scan driver and the data driver.