Display Driving Circuit Architecture Simplification via Data Line Multiplexing
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Solution Overview
Problem
The complex and costly architecture of driving circuits in ultra-high definition display panels necessitates a simplified and cost-effective solution for detection and driving of defective panels.
Innovation Solution
A driving device and method that incorporates a timer control module, a driving module, and data lines with short connections to multiplex data signals, utilizing a low voltage differential signal interface to simplify the circuit architecture and enable higher resolution displays with lower resolution input data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a timer control register is used to control the driver to turn on the UD display panel with UD resolution data signals, then the display panel can be activated, but the architecture of the driving circuit becomes complicated and costly
Solution Approach 1:
The patent merges multiple data line sets by short-connecting them to reduce the number of independent data transmission paths. Specifically, even-numbered data lines (D0, D2, D4, etc.) are short-connected to odd-numbered data lines (D1, D3, D5, etc.), allowing lower resolution input data to be transmitted through multiplexed lines to drive the ultra-high definition display panel, thereby simplifying the driving circuit architecture while maintaining display functionality
Solution Approach 2:
The patent makes the data lines serve multiple functions by enabling them to transmit both lower resolution input data and serve as part of the ultra-high definition data transmission system. The short-connected data lines can carry data for multiple sub-pixels simultaneously, allowing a single data line set to perform the work of multiple separate lines, thus reducing circuit complexity while maintaining UD display capability
2Loss of information
If multiple sets of data lines are used to transmit data signals for different color sub-pixels, then complete color information is transmitted, but the number of data lines increases circuit complexity and cost
Solution Approach 1:
The patent combines multiple data line sets by short-connecting corresponding lines from different sets. For example, data lines transmitting red sub-pixel information, green sub-pixel information, and blue sub-pixel information are grouped and short-connected in a systematic pattern, reducing the total number of independent data lines while ensuring all color information reaches the display panel through the multiplexed line structure
Solution Approach 2:
The patent introduces a time-dimensional multiplexing approach where data for different color sub-pixels is transmitted sequentially through the same physical data lines at different time intervals. The short-connected data lines are controlled to transmit RGB data in a time-division manner, allowing multiple data streams to share the same physical medium without interference, thus reducing spatial complexity while maintaining information completeness
Data Source
AI summary
The present invention relates to a driving device and a driving method of a display device, and the driving device of the display device includes a timer control module, a driving module and a plurality of sets of data lines. Wherein the output terminal of the timer control module outputs a plurality of data signals of different color sub-pixels; the receiving terminal of the driving module receives the data signal from the timer control module; wherein the plurality of sets of data lines are connected to the timer control module and the driving module, two or more than two sets of the data lines connecting to the driving module for transmitting the data signal of the same color sub-pixel are short connected, and after the short connected are connected to the output terminal of the timer control module through a set of data lines.