Display Device Data Driver Channel Multiplexing Narrow Bezel
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The increasing complexity and cost of data driver fabrication in large-scale, high-resolution LCD devices due to the need for a large number of data lines, which is exacerbated by the limited space in the non-display region and the difficulty in implementing a narrow bezel structure.
Innovation Solution
A liquid crystal display device design that allows two or more data lines to share one channel, using a switching controller with switches for each channel to connect adjacent data lines to the channel, reducing the number of switching elements and ensuring a wider area for transistor placement, facilitating a narrow bezel structure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of data lines is increased to achieve high resolution, then the image quality is improved, but the number of data driver channels and switching elements increases, leading to increased device complexity and fabrication cost
Solution Approach 1:
Multiple adjacent data lines (e.g., three data lines) are merged to share a single data driver channel through a multiplexer. This combining approach reduces the total number of channels required in the data driver, thereby decreasing device complexity and fabrication cost while maintaining the ability to drive high-resolution displays through time-division multiplexing
2Adaptability or versatility
If the number of switching elements is increased to support more data lines, then the data line connectivity is improved, but the space available in the non-display region is reduced, making it difficult to implement a narrow bezel structure
Solution Approach 1:
Adjacent switching elements are merged into a shared multiplexer structure where a single switching element controls the connection of multiple data lines to one channel through time-division multiplexing. This merging significantly reduces the number of switching elements required, thereby freeing up space in the non-display region and enabling narrower bezel designs
3Device complexity
If time-division multiplexing is used to share channels, then the number of channels is reduced, but the switching elements must be precisely controlled within limited space, increasing manufacturing precision requirements
Solution Approach 1:
Multiple data lines are merged to share a single channel through a multiplexer with fewer switching elements. This merging reduces both the number of channels and the number of switching elements required, thereby decreasing manufacturing precision requirements while maintaining effective data line connectivity through time-division multiplexing control
Data Source
AI summary
A display device includes a display panel including gate lines and data lines, the gate lines and the data lines intersecting, and pixels defined at the intersections of the gate lines and data lines, a gate driver to sequentially output a gate driving signal to the gate lines, a data driver to sequentially output a data signal to channels, a switching controller to electrically connect one of the channels with two or more of the data lines, the switching controller including a switch for each of the channels, wherein the two or more data lines are adjacent, one is directly connected to the channel and the other is connected to the channel through the switch, and a timing controller to provide a selection signal to the switch which controls the connection between the other of the two or more data lines and the channel.