Display Device Sub-pixel Connection for Charging Time
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Solution Overview
Problem
Conventional display devices face a challenge in balancing charging time and cost as the resolution increases, requiring more data lines and source driving circuits, which escalates costs while reducing charging time for each sub-pixel.
Innovation Solution
The display device configures sub-pixels in a manner where fewer gate lines serve multiple rows and more data lines serve multiple columns, allowing for efficient grey-level signal transmission, reducing the number of source driving circuits and charging time by connecting multiple sub-pixels to shared gate and data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If the number of data lines is increased to accommodate higher resolution, then the charging time for each sub-pixel is reduced, but the cost increases due to more source driving circuits
Solution Approach 1:
The patent segments the data lines into multiple groups, where each group is alternatively connected to different columns of sub-pixels. This allows the same physical data lines to serve multiple columns through time-division multiplexing, reducing the total number of data lines and source driving circuits needed while maintaining adequate charging time for each sub-pixel group
Solution Approach 2:
The patent implements periodic switching of data line connections to different column groups. During different time periods, different sets of columns are activated with dedicated data lines, creating a time-division multiplexed system that reduces hardware complexity while ensuring each sub-pixel receives sufficient charging time in its designated time slot
2Device complexity
If the number of gate lines is reduced to lower cost, then the device complexity decreases, but the ability to control multiple rows efficiently is compromised
Solution Approach 1:
Each gate line is designed to control multiple rows of sub-pixels simultaneously. Through the combination of gate line control with the time-division multiplexed data line system, a single gate line can activate different row groups at different time periods, making the gate lines multi-functional and reducing the total number needed while maintaining control efficiency
Data Source
AI summary
A display device includes a display panel, a gate driving circuit and a source driving circuit. The display panel includes multiple sub-pixels arranged in multiple rows and multiple columns. Three first sub-pixels of the sub-pixels have different colors and constitute one pixel. The first sub-pixels are disposed in the same column. The gate driving circuit is electrically connected to multiple gate lines. The number of the gate lines is less than the number of the rows. Each of the gate lines corresponds to at least two of the rows. Each of the gate lines is electrically connected to at least two of the sub-pixels in each of the columns. The source driving circuit is electrically connected to multiple data lines. The number of the data lines is greater than the number of the columns. Each of the columns corresponds to at least two of the data lines.