Display Data Driver Redundant Transfer Elimination
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Solution Overview
Problem
In display apparatuses using the double rate driving (DRD) method, power consumption is wasted due to the need to transfer image data twice for each horizontal line, even when the data for two continuous lines is the same, leading to inefficiency in data voltage output.
Innovation Solution
A display apparatus design where data drivers generate data voltages for a second horizontal line based on image data from a first horizontal line, eliminating the need to transfer identical data for both lines, thereby reducing power consumption by minimizing redundant data transfers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If the double rate driving method is applied to decrease the number of data drivers, then the number of data drivers decreases by half, but power consumption increases due to redundant data transfers
Solution Approach 1:
The data driver performs preliminary action by generating and storing data voltages for the first horizontal line before the second horizontal line is driven. When the image data for both lines is identical, the stored data voltages are reused for the second line, avoiding redundant data transfers and reducing power consumption while maintaining the reduced data driver configuration
2Productivity
If image data is transferred twice for each horizontal line in DRD method, then data voltages can be output to two horizontal lines, but unnecessary power consumption occurs due to redundant transfers
Solution Approach 1:
The data driver creates a copy of the data voltages generated for the first horizontal line and reuses this copy for the second horizontal line when the image data is identical. This copying mechanism eliminates the need for redundant data transfers from the controller, reducing power consumption while maintaining efficient data voltage output to both horizontal lines
Data Source
AI summary
The present disclosure relates to a display apparatus for generating data voltages which are to be output to pixels included in second virtual horizontal lines, based on pieces of image data corresponding to first virtual horizontal lines.