Timing Controller Dynamic Pulse Width Adjustment
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Solution Overview
Problem
Display devices face challenges in efficiently managing power consumption when displaying image signals with varying aspect ratios, as they often require adjusting the display mode to match the aspect ratio of the image signal, leading to unnecessary power usage.
Innovation Solution
A display device comprising a timing controller that converts external clock and data signals into image data, horizontal synchronization, vertical synchronization, and data enable signals, with adjustable pulse widths to match the aspect ratio or black image display area, allowing for dynamic adjustment of gate and data line activation to minimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the display device adjusts the display mode to match the aspect ratio of the image signal, then the image can be displayed properly on the panel, but power consumption increases due to unnecessary activation of gate and data lines
Solution Approach 1:
The patent segments the gate lines and data lines into active and inactive groups based on the detected aspect ratio. When an aspect ratio mismatch is detected, only the gate lines and data lines corresponding to the black image display area are activated, while the rest are kept inactive. This segmentation approach maintains proper image display quality while significantly reducing power consumption by disabling unused lines.
Solution Approach 2:
The patent applies local quality by differentiating the activation state of different regions of gate and data lines based on their spatial correspondence with the image display area. Lines corresponding to the black image area (due to aspect ratio mismatch) are activated, while lines corresponding to the non-display area are deactivated. This localized activation strategy ensures proper display where needed while saving energy where not required.
2Adaptability or versatility
If all gate lines and data lines are activated to ensure complete display coverage, then the display panel can show any image signal, but power consumption increases unnecessarily
Solution Approach 1:
The patent implements dynamics by making the activation of gate lines and data lines variable rather than fixed. The timing controller dynamically adjusts which lines are activated based on the detected aspect ratio of the input image signal. This dynamic adaptation allows the display device to maintain versatility for different image formats while avoiding the energy waste of continuously activating all lines.
Solution Approach 2:
The patent changes the operational parameters of the gate driver and data driver by modifying the activation patterns of gate lines and data lines according to the image signal's aspect ratio. Different activation patterns are applied for different aspect ratios, enabling the system to adapt to various display requirements without wasting energy on unused lines.
3Stability of the object's composition
If the timing controller processes all synchronization signals with fixed pulse widths, then the control signals are generated consistently, but the aspect ratio mismatch causes black image areas that waste power
Solution Approach 1:
The timing controller incorporates feedback by detecting the aspect ratio of the input image signal and using this information to adjust the pulse widths of synchronization signals and the activation patterns of gate and data lines. This feedback mechanism ensures that control signals are consistently generated while adapting to aspect ratio changes, thereby preventing energy waste from displaying black image areas.
Solution Approach 2:
The patent applies dynamics to the synchronization signal generation by making pulse widths variable rather than fixed. The timing controller dynamically adjusts the pulse widths of horizontal and vertical synchronization signals according to the detected aspect ratio, which in turn controls which gate and data lines are activated. This dynamic adjustment eliminates the need to waste energy on lines corresponding to black image areas while maintaining control signal consistency.
Data Source
AI summary
A display device is provided which includes a display panel including a plurality of pixels; a gate driving unit configured to drive gate lines; a data driver configured to drive data lines; and a timing controller configured to generate a plurality of control signals for controlling the gate driving unit and the data driver. The timing controller converts the data signals into an image data signal, a horizontal synchronization signal, a vertical synchronization signal, and a data enable signal, a pulse width of each of the horizontal and vertical synchronization signals corresponding to an aspect ratio of the data signals or a size of a black image display area. The timing controller generates the plurality of control signals according to the image data signal, the data enable signal, and pulse widths of the horizontal synchronization signal and the vertical synchronization signal.