Electrophoretic Display Data Driver Segmentation
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Solution Overview
Problem
Flexible electrophoretic displays face challenges in achieving compactness and miniaturization due to the need for a large number of data lines and significant chip area in data drivers, which increases hardware costs and reduces driving capability.
Innovation Solution
The implementation of multiple stages of serial-to-parallel conversion in the data driver, utilizing a combination of serial-to-parallel converters and latch circuits, reduces the number of data lines and circuit area, allowing for efficient data transmission and voltage conversion while maintaining driving capability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a large number of data lines are used to transmit frame data to the display panel, then high resolution display is achieved, but the flexible display volume increases and compactness is reduced
Solution Approach 1:
The display panel is divided into multiple regions, with each region having its own data driver. Frame data is segmented into multiple frame data groups, where each group corresponds to a specific region. This segmentation allows data transmission to be distributed across multiple smaller channels rather than requiring a single large-volume data transmission path, thereby maintaining high resolution while reducing overall display volume.
Solution Approach 2:
The patent introduces a regional dimension to the data transmission architecture. Instead of transmitting all frame data through a single data path, the system uses multiple data drivers organized by regions, adding a spatial dimension to data routing. This dimensional approach allows efficient data distribution without increasing the physical volume of the flexible display.
2Power
If significant chip area is allocated to the data driver to ensure driving capability, then display driving performance is improved, but hardware costs increase and circuit area expands
Solution Approach 1:
The data driver functionality is segmented into multiple regional data drivers, each handling a specific region of the display panel. This segmentation distributes the driving capability requirements across multiple smaller chips rather than concentrating all driving functions in a single large chip, thereby reducing the chip area of individual data drivers while maintaining overall driving performance.
Solution Approach 2:
Each regional data driver is designed to handle only the driving requirements of its specific region, implementing partial action rather than full driving capability in every driver. This approach reduces the chip area of each individual data driver while the collective action of all regional drivers provides sufficient overall driving capability for the entire display panel.
Data Source
AI summary
An electrophoretic display system includes an electrophoretic display panel, a timing controller, a data driver, and a gate driver. The data driver includes a first serial-to-parallel converter and a data converter. The first serial-to-parallel converter receives a plurality of first series data and converts the first series data into a plurality of second series data. The quantity of the second series data is more than the quantity of the first series data. The data converter receives the second series data and is electrically connected to the electrophoretic display panel. Besides, the data converter converts the second series data into display voltages, and the quantity of the display voltages is more than the quantity of the second series data. The gate driver is electrically connected to the electrophoretic display panel and the timing controller and controlled by the timing controller to provide gate driving voltages to the electrophoretic display panel.