Pixel Drive Circuit With Shared Source Lines for Narrow Bezels
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Solution Overview
Problem
The increase in pixel units and drive signal lines in display panels leads to a wider bezel and increased difficulty in wiring, which reduces the screen-to-body ratio and complicates electrical connections.
Innovation Solution
A pixel drive circuit design with reduced source and scan drive lines, utilizing switch assemblies to share drive lines among multiple data lines and scan lines, allowing for efficient wiring and reduced non-display region occupation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of pixel units is increased, then the display resolution is improved, but the number of drive signal lines increases leading to a wider bezel
Solution Approach 1:
Multiple data lines are merged to share a common source drive line through switch assemblies. The switch assemblies enable multiple data lines to be electrically connected to the same source drive line at different time periods, reducing the total number of source drive lines required and thereby narrowing the bezel width
Solution Approach 2:
The circuit uses time-division multiplexing where switch assemblies dynamically connect different data lines to the same source drive line at different time periods. This dynamic switching allows the system to handle more data lines with fewer source drive lines, resolving the contradiction between high resolution and narrow bezel
2Quantity of substance
If the number of drive signal lines is increased, then more pixel units can be driven, but the wiring layout complexity increases
Solution Approach 1:
Source drive lines are given multi-functionality through switch assemblies that allow a single source drive line to serve multiple data lines at different time periods. This universal approach reduces the total number of drive lines needed while maintaining the ability to drive a large number of pixel units
Solution Approach 2:
Switch assemblies act as intermediary components between data lines and source drive lines. They mediate the connection by selectively connecting different data lines to the same source drive line at different time periods, simplifying the wiring layout while enabling驱动 of multiple pixel units
Data Source
AI summary
A pixel drive circuit and a display panel are provided. Multiple columns of pixel units are arranged in a row direction. Multiple data lines are spaced apart from one another and extend in a column direction, where each data line is electrically connected to one column of pixel units. The number of source drive lines is less than the number of data lines. A first connection end of each switch assembly is electrically connected to at least one data line, a second connection end of each switch assembly is electrically connected to one source drive line, and at least two data lines are electrically connected to a same source drive line through different switch assemblies.