Display Sub-Pixel Data Line Sharing for Driver Reduction
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Solution Overview
Problem
As display panel sizes increase and resolutions become higher, the number of pixels and consequently the number of data lines and data driver integrated circuits also increase, leading to higher driving loads and potential defects in the process.
Innovation Solution
A display device and method where first and second sub-pixels share a data line, with transistors controlling the connection to the data line, allowing for concurrent light emission with reduced data lines and integrated circuits, using a specific configuration of transistors and capacitors to manage data signals and reset previous frame data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels is increased to achieve higher resolution, then the display resolution is improved, but the number of data lines and data driver integrated circuits increases
Solution Approach 1:
The pixel array is divided into first and second sub-pixel groups that are driven by different transistors (first and second transistors) with phase-differentiated control signals. This segmentation allows independent control of sub-pixel groups, enabling the system to maintain high resolution while reducing the overall complexity of data driving circuits through phased operation.
Solution Approach 2:
The patent employs periodic action by applying control signals with phase differences to the first and second transistors alternately. The first transistor is turned on during a first period to drive first sub-pixels, while the second transistor is turned on during a second period for second sub-pixels. This periodic, phased driving approach reduces the simultaneous driving load on data lines and integrated circuits while maintaining high display resolution.
2Device complexity
If the number of data driver integrated circuits is reduced, then the device complexity is decreased, but the driving load on each circuit increases
Solution Approach 1:
By implementing periodic, phased driving where first and second transistors operate alternately with phase-differentiated control signals, the patent distributes the driving load over time. During the first period, only first sub-pixels are driven; during the second period, only second sub-pixels are driven. This temporal separation reduces the peak driving load on each integrated circuit while maintaining the reduced circuit count.
Solution Approach 2:
The pixel array is segmented into first and second sub-pixel groups that are driven separately by different transistors. This segmentation allows the driving load to be divided across multiple transistors and control circuits, reducing the burden on any single data driver integrated circuit while maintaining the overall reduced circuit architecture.
Data Source
AI summary
A display device includes a first sub-pixel and a second sub-pixel configured to share one data line, a first transistor configured to turn on or off by a first control signal and configured to couple the first sub-pixel to the one data line, and a second transistor configured to turn on or off alternately with the first transistor by a second control signal having a phase difference from that of the first control signal and configured to couple the second sub-pixel to the one data line.