Display Panel Mux Layout for High-Resolution Driver Area Reduction
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Solution Overview
Problem
High-resolution electroluminescent display devices face design restrictions due to increased mounting areas for gate drivers and data drive ICs, necessitated by the rising number of subpixels, gate lines, and data channels.
Innovation Solution
The display device employs a TRD+2 Mux structure, where subpixels share data lines and are driven by a single data channel, and gate signals are supplied by gate drive ICs positioned on both ends, utilizing an Even-ODD scan method to reduce the number of gate and data lines.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the number of subpixels is increased to achieve higher resolution, then display performance is improved, but the mounting area for gate drivers and data drive ICs increases
Solution Approach 1:
Multiple gate drive ICs are merged into a single integrated gate driver that can drive multiple gate lines simultaneously. The gate driver includes multiple output terminals that are respectively connected to different gate lines, allowing one integrated component to replace multiple separate ICs, thereby reducing the mounting area while maintaining the ability to drive high-resolution displays with increased subpixel counts
Solution Approach 2:
The gate driver is designed with multi-functional output terminals that can selectively connect to different gate lines based on control signals. Each output terminal can serve multiple gate lines in different time slots or regions, enabling a single gate driver to perform the function of multiple ICs and reducing the overall mounting area required
2Measurement precision
If the number of subpixels is increased to achieve higher resolution, then display performance is improved, but the number of data drive ICs increases
Solution Approach 1:
Multiple data drive ICs are merged into a single integrated data driver with multiple output terminals. The data driver receives image signals and distributes them to different data lines through its multiple outputs, replacing the need for multiple separate data drive ICs and reducing device complexity while supporting high-resolution displays
Solution Approach 2:
The data driver is designed with universal output terminals that can selectively connect to different data lines. Each output terminal can serve multiple data lines through time-division or space-division multiplexing, enabling one data driver to perform the function of multiple ICs and reducing the overall number of components required
3Reliability
If separate gate drive ICs are used for odd and even gate lines, then signal transmission is optimized, but the mounting area increases
Solution Approach 1:
The gate driver integrates multiple output terminals within a single component that can respectively drive odd and even gate lines. This merging approach maintains the specialized signal transmission paths for different gate line types while consolidating the driver components into one integrated unit, thereby preserving signal quality while reducing mounting area
Data Source
AI summary
A display device includes a data drive IC configured to output a data voltage through a data channel, data lines arranged in a first direction to transmit the data voltage to subpixels, pixel units configured to share one data line and each including a first color subpixel, a second color subpixel, and a third color subpixel sequentially arranged in the same direction as a direction of the data line, a first multiplexer configured to transmit a data voltage output from a first data channel to a first data line to which a first pixel unit is connected, and a second multiplexer configured to transmit a data voltage output from the first data channel to a second data line to which a second pixel unit is connected.