Dual Data Line Display Device with Multiplexer Switching
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Solution Overview
Problem
As the number of pixels in display devices increases, the time required to apply data voltage to each pixel decreases, leading to shorter charging times for data lines, which results in higher fabrication costs due to increased data driving parts and gamma circuit components.
Innovation Solution
A display device utilizing dual data lines, where data voltage is supplied to subpixels through left and right data lines, and a method of driving the device that reduces the number of data driving parts and gamma circuit components by using multiplexers to sequentially transmit data voltage to three subpixels, thereby reducing fabrication costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixels is increased to improve resolution, then the image quality is improved, but the charging time for data lines decreases and fabrication cost increases
Solution Approach 1:
The patent divides the data line into two separate data lines (first data line and second data line) to segment the data transmission path. This segmentation allows each data line to be charged independently, effectively doubling the charging capacity and ensuring sufficient charging time even as pixel count increases, thereby maintaining display resolution without sacrificing charging time.
Solution Approach 2:
The patent combines the function of multiple data driving parts into a single data driving part that controls both the first and second data lines. By merging these functions and using a single data driving part with a multiplexer, the fabrication cost is reduced while still providing sufficient charging time through the dual data line structure.
2Measurement precision
If the number of pixels is increased to improve resolution, then the image quality is improved, but the number of data driving parts increases and fabrication cost increases
Solution Approach 1:
The patent merges the functions of multiple data driving parts into a single data driving part that controls both the first and second data lines. This is achieved by using a multiplexer to switch between the two data lines, thereby reducing the number of data driving parts from two to one and reducing fabrication cost while maintaining high resolution capability.
Solution Approach 2:
The single data driving part is designed to perform multiple functions by controlling both the first data line and the second data line through a multiplexer. This multi-functional design allows one data driving part to replace what would traditionally require two separate data driving parts, reducing device complexity and fabrication cost.
3Measurement precision
If the number of pixels is increased to improve resolution, then the image quality is improved, but the number of gamma circuit parts increases and fabrication cost increases
Solution Approach 1:
The patent merges multiple gamma circuit parts into a single gamma circuit part that serves both the first data line and the second data line. By sharing the gamma circuit functionality across both data lines, the number of gamma circuit parts is reduced from two to one, thereby reducing fabrication cost while still supporting high resolution display.
Data Source
AI summary
A display device includes: a timing controlling part generating an image data, a data control signal and a gate control signal; a data driving part generating a data voltage using the image data and the data control signal; a gamma part transmitting the data voltage corresponding to the image data; a gate driving part generating a gate voltage using the gate control signal; a display panel including subpixels, gate lines, left data lines at a left side of the subpixels and right data lines at a right side of the subpixels; and first MUX switches, second MUX switches, third MUX switches, fourth MUX switches, fifth MUX switches and sixth MUX switches sequentially transmitting the data voltage to the left data lines and the right data lines.