Display Panel Driving Apparatus Reducing Color Switching Power
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Solution Overview
Problem
In dual-gate amorphous-Si display panels, the frequent switching of colors associated with a single data line increases power consumption due to the need for the source driver to frequently change voltage levels, as each data line drives sub-pixels of different colors.
Innovation Solution
A driving apparatus with a reordering circuit that clusters sub-pixel data of the same color together, changing the scanning sequence to reduce the color switching number, thereby reducing power consumption by outputting voltages for sub-pixels of the same color more adjacently in time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If each data line drives sub-pixels of different colors in dual-gate amorphous-Si display panels, then the number of data lines is reduced, but the color switching number increases and power consumption increases
Solution Approach 1:
The patent segments the data transmission by dividing sub-pixel data into different color groups (red, green, blue) and transmitting them in separate time slots. This allows the source driver to output data for one color at a time, reducing the frequency of voltage level changes and thereby reducing power consumption while maintaining the reduced data line configuration
Solution Approach 2:
The patent implements periodic color switching where the source driver outputs data for red sub-pixels, then green sub-pixels, then blue sub-pixels in a repeating cycle. This periodic action pattern allows the driver to maintain stable voltage levels during each color phase, reducing overall power consumption compared to continuous color switching
2Productivity
If the source driver frequently changes voltage levels to drive different colored sub-pixels, then color data can be transmitted continuously, but power consumption increases
Solution Approach 1:
The source driver operates in periodic cycles, maintaining stable voltage levels for each color group during its designated time slot. This periodic operation reduces the frequency of voltage transitions compared to continuous color switching, thereby reducing power consumption while maintaining data transmission efficiency
Solution Approach 2:
The patent performs preliminary organization of sub-pixel data by color groups before transmission. By pre-grouping red, green, and blue sub-pixel data separately, the source driver can output each color group contiguously without intermediate voltage changes, improving transmission efficiency within each color phase while reducing overall power consumption
Data Source
AI summary
This disclosure relates to techniques for a driving apparatus including a reordering circuit and a source driving circuit. The reordering circuit can be configured to reorder a plurality of sub-pixel data of an input data string to generate a reordered data string so as to reduce a color switching number associated with a target data line. The source driving circuit can be coupled to the reordering circuit to receive the reordered data string. The source driving circuit can be configured to drive the target data line of a display panel according to the reordered data string.