Liquid Crystal Display Driving Apparatus Reducing Data Lines
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Solution Overview
Problem
Conventional liquid crystal displays require a large number of data lines, leading to increased manufacturing costs and resource wastage due to the need for numerous data driving integrated circuits.
Innovation Solution
A driving apparatus for liquid crystal displays that reduces the number of data lines by using sub-pixels arranged on both sides of each data line, with a timing controller that separates and alternately applies odd-numbered and even-numbered sub-pixel data to the data lines during each horizontal period, and a gate driver that applies overlapping gate signals to adjacent gate lines to efficiently drive liquid crystal cells.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional liquid crystal display uses one data line per vertical line of pixels, then each pixel can be driven independently, but the number of data lines increases significantly, leading to increased manufacturing costs and resource wastage
Solution Approach 1:
The patent merges the driving function for multiple pixels into a single data line by arranging sub-pixels in pairs (odd and even) along each data line. Each data line now serves two vertical columns of sub-pixels instead of one, effectively halving the total number of data lines required while maintaining independent pixel control through selective activation of sub-pixel pairs
Solution Approach 2:
The patent segments each pixel into multiple sub-pixels (odd-numbered and even-numbered sub-pixels) that can be selectively driven. This segmentation allows the display to process and drive sub-pixels in alternating patterns, enabling a single data line to efficiently serve multiple pixel columns through time-multiplexed driving
2Ease of manufacture
If the number of data lines is reduced, then manufacturing costs and resource usage decrease, but the complexity of data routing and signal distribution increases
Solution Approach 1:
The patent employs periodic action by alternately driving odd-numbered and even-numbered sub-pixels in sequential horizontal periods. During odd periods, odd sub-pixels are activated; during even periods, even sub-pixels are activated. This periodic driving pattern simplifies the data line configuration by allowing a single data line to serve multiple columns through time-multiplexed signal distribution, reducing the apparent complexity of the routing structure
3Quantity of substance
If sub-pixels are arranged on both sides of each data line, then the number of data lines can be reduced, but the gate signal coordination becomes more complex
Solution Approach 1:
The patent applies preliminary action by pre-organizing sub-pixels into distinct odd and even groups along each data line before the driving process begins. This preliminary arrangement allows the gate driver to systematically coordinate gate signals for alternating sub-pixel pairs, simplifying the coordination complexity through structured, predictable signal patterns rather than random or complex sequencing
Data Source
AI summary
A method and apparatus for driving a liquid crystal display for reducing the number of data lines is disclosed. In the apparatus, a timing controller receives red sub-pixel data, green sub-pixel data and blue sub-pixel data from the exterior thereof and then divides the received data into odd-numbered sub-pixel data and even-numbered sub-pixel data. A data driver receives the odd-numbered sub-pixel data and the even-numbered sub-pixel data from the timing controller during one horizontal period and then applies the received odd-numbered and even-numbered sub-pixel data to data lines during the one horizontal period.