Zigzag Pixel Arrangement for LCD Polarity Inversion
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Solution Overview
Problem
Liquid crystal display (LCD) apparatuses suffer from display defects such as moving line defects and luminance differences due to polarity inversion mode, which affect display quality and power efficiency.
Innovation Solution
The display apparatus employs a column inversion mode with a zigzag arrangement of pixels and data lines, where data lines extend in one direction and gate lines in a perpendicular direction, alternating polarities between adjacent columns to reduce power consumption and eliminate moving line defects.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If polarity inversion mode is used to drive LCD panel, then power efficiency is improved, but display defects such as moving line defects and luminance difference occur
Solution Approach 1:
The display panel is divided into multiple pixel rows, with each row having different gate line connection configurations. First pixel rows are connected to first gate lines while second pixel rows are connected to second gate lines, creating segmented control regions that allow independent polarity management and reduce display defects during polarity inversion operation
Solution Approach 2:
Different regions of the display panel are assigned different gate line configurations based on their position and requirements. The first and second gate lines have different connection patterns to pixel rows, allowing local optimization of display quality in different regions while maintaining overall power efficiency through polarity inversion mode
2Device complexity
If data lines are extended to serve multiple pixel columns, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The gate line configuration is extended into the vertical dimension by connecting gate lines to multiple pixel rows with different connection patterns. This dimensional approach allows a single gate line structure to control multiple rows, reducing the overall number of data lines needed while maintaining precise control through the zigzag arrangement and selective connections in different regions
Data Source
AI summary
A display apparatus includes a plurality of pixels arranged in rows and columns, each pixel column extends in a first direction and each pixel row extends in a second direction crossing the first direction, a first data line extending in the first direction and configured to transfer a data voltage to pixels included in at least two pixel columns, and for each pixel row, a first gate line extending in the second direction and disposed at a first side of the pixel row, and a second gate line extending in the second direction and disposed at a second side of the pixel row, the first and second sides of the pixel row are opposite to each other. In a pair of adjacent pixel columns, pixels, which are connected to the first gate line of their respective pixel row, are arranged in a zigzag arrangement in the first direction.