Liquid Crystal Display Pixel Arrangement for Low Power Column Inversion
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Solution Overview
Problem
Conventional liquid crystal display driving methods, such as dot inversion, result in high power consumption and increased operation temperature due to complex driver IC construction and frequent polarity inversions.
Innovation Solution
A liquid crystal display with a pixel array arrangement that employs column inversion driving using a source driver IC, where data signals with opposite polarities are applied to odd and even data lines, and connections between thin film transistors and lines are configured to invert polarity every two pixel areas horizontally and every pixel area vertically, simplifying the driver IC construction and reducing power consumption and temperature.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If dot inversion driving method is used to offset flicker between adjacent pixels, then flicker is reduced, but driver IC construction becomes more complicated and power consumption increases
Solution Approach 1:
The display panel is divided into distinct data line groups (odd and even data lines) that receive different polarity data signals. This segmentation allows the driver IC to use a simpler column inversion driving method while still achieving flicker compensation, as each data line group can be independently controlled without requiring complex per-pixel polarity inversion circuitry.
2Object-affected harmful factors
If dot inversion driving method is used to offset flicker between adjacent pixels, then flicker is reduced, but power consumption increases and operation temperature rises
Solution Approach 1:
By segmenting the data lines into odd and even groups with different polarity assignments, the driver IC can implement flicker compensation through column inversion driving, which consumes less power than dot inversion driving. The segmentation enables simpler control logic and reduces the frequency of polarity switching operations.
Solution Approach 2:
Instead of inverting polarity at the pixel level (dot inversion), the invention inverts polarity at the data line group level (column inversion). This inverted approach achieves similar flicker compensation effects while reducing the complexity and power consumption of the driver IC, as fewer inversion operations are required.
3Device complexity
If column inversion driving method is used to simplify driving, then driver IC construction is simplified, but crosstalk between adjacent pixels in column direction remains
Solution Approach 1:
Different data lines are assigned different polarity characteristics (odd data lines receive one polarity, even data lines receive the opposite polarity). This local quality differentiation allows the system to maintain simple column inversion driving while reducing crosstalk, as adjacent pixels in the column direction receive data signals with different polarities, minimizing interference between them.
Data Source
AI summary
A pixel arrangement method for a liquid crystal display includes the steps of: inputting data signals with different driving polarities to odd data lines and even data lines respectively; and changing connections between a gate of thin film transistor and gate lines and connections between a source of thin film transistor and data lines in every pixel area whereby the driving polarity is inverted every two pixel areas in a transverse direction and is inverted every pixel area in a longitudinal direction. The present invention further provides a liquid crystal display.