Demultiplexer Circuit for Display Power Reduction
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Solution Overview
Problem
The one-data-triple-gate (ODTG) architecture in display panels leads to increased power consumption due to the frequent switching of signal waveforms required for data signals to correspond to different color pixels, resulting in higher power consumption in circuits generating these signals.
Innovation Solution
The electronic device incorporates a circuit design with demultiplexer and switching circuits that reduce the number of times the data signal waveform needs to be switched by grouping sub-pixel rows and optimizing signal timing, allowing continuous signal provision for the same color pixels without frequent switching.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the ODTG architecture is used to display images with continuous signal waveform conversion for different color pixels, then the display capability and color accuracy are improved, but the power consumption increases due to excessive signal switching
Solution Approach 1:
The pixel array is divided into multiple sub-pixel rows, with each sub-pixel row driven by independent switching circuits. This segmentation allows different sub-pixel rows to be driven independently, reducing the need for continuous signal waveform conversions across the entire display, thereby lowering power consumption while maintaining display capability
Solution Approach 2:
Signal waveform conversions are performed in advance for entire groups of sub-pixel rows rather than continuously during display. The driving circuit prepares signal waveforms beforehand for different color pixels, allowing continuous signal provision to相同 color pixels without frequent switching, thus reducing power consumption
2Measurement precision
If signal waveform conversion is performed continuously to correspond to different color pixels, then the color accuracy is improved, but the number of switching operations increases leading to higher power consumption
Solution Approach 1:
Multiple sub-pixel rows with the same color requirements are grouped together and driven by the same signal waveform. This merging approach allows continuous signal provision to相同 color pixels without frequent switching, maintaining color accuracy while reducing the number of waveform conversions and power consumption
Solution Approach 2:
The driving circuit determines and prepares signal waveforms in advance for groups of sub-pixel rows based on their color requirements. This preliminary action eliminates the need for continuous real-time waveform conversions during display, reducing switching operations and power consumption while preserving color accuracy
Data Source
AI summary
The disclosure provides an electronic device. The electronic device includes a pixel array and a first driving circuit. The pixel array is disposed on a substrate and includes a plurality of sub-pixel rows. The first driving circuit is disposed on the substrate and located on one side of the pixel array. The first driving circuit includes a plurality of demultiplexer circuits and a plurality of switching circuits. The demultiplexer circuits include a first demultiplexer circuit. The switching circuits include a first switching circuit. The first switching circuit is coupled to the first demultiplexer circuit, and the first demultiplexer circuit is coupled to at least three of the plurality of sub-pixel rows.