LCD Pixel Structure Alternating Rows for Point Inversion

Solution Overview

Problem

Existing liquid crystal display (LCD) pixel structures face challenges in achieving low power consumption while maintaining effective polarity inversion and minimizing crosstalk, particularly in point inversion patterns, which are crucial for reducing residual direct current and flickering.

Innovation Solution

A pixel structure is designed with alternating rows of sub-pixels connected to different data lines, allowing for simple signal input to achieve point inversion, reducing power consumption and minimizing crosstalk by ensuring adjacent sub-pixels have opposite polarities, thereby improving display quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If point inversion is implemented to reduce flickering and residual direct current, then display quality is improved, but power consumption increases and data signal complexity increases

Engineering Contradiction:

Improvedisplay qualityVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The pixel array is divided into alternating odd and even rows, with each row connected to different data lines. This segmentation allows independent control of polarity for each row, enabling point inversion to be achieved through simple data line switching rather than complex signal inversion, thus reducing power consumption while maintaining display quality

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of inverting the data signal polarity for point inversion, the patent inverts the connection pattern by connecting odd rows to one set of data lines and even rows to another set. This structural inversion achieves the same polarity inversion effect through physical connection arrangement rather than signal manipulation, reducing power consumption

Inventive Principle:

Principle #13The other way round (Inversion)

2Reliability

If point inversion is implemented to reduce flickering and residual direct current, then display quality is improved, but data signal complexity increases

Engineering Contradiction:

Improvedisplay qualityVSAvoiddata signal complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The pixel array is divided into alternating odd and even rows, with each row connected to different data lines. This segmentation allows independent control of polarity for each row, enabling point inversion to be achieved through simple data line switching rather than complex signal inversion, thus reducing power consumption while maintaining display quality

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of inverting the data signal polarity for point inversion, the patent inverts the connection pattern by connecting odd rows to one set of data lines and even rows to another set. This structural inversion achieves the same polarity inversion effect through physical connection arrangement rather than signal manipulation, reducing power consumption

Inventive Principle:

Principle #13The other way round (Inversion)

3Adaptability or versatility

If sub-pixels are arranged in difficult colors between sub-pixels in the same column, then color diversity is improved, but visual inspection difficulty increases

Engineering Contradiction:

Improvecolor diversityVSAvoidvisual inspection difficulty

Core Design Contradiction:

Adaptability or versatilityVSDifficulty of detecting and measuring

Solution Approach 1:

The patent applies different color arrangements to different regions: odd rows use one color sequence while even rows use another, creating local quality variations. This allows color diversity to be maintained while providing regular patterns that facilitate visual inspection, as inspectors can systematically check alternating rows with different color patterns

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9536906B2Pixel structure, liquid crystal display array substrate and liquid crystal display panel

Publication Date: 2017.01.03 SHANGHAI TIANMA MICRO ELECTRONICS CO LTD

AI summary

A pixel structure is disclosed. The pixel structure includes a plurality of data lines arranged in a first direction, and a plurality of gate lines arranged in a second direction. The plurality of data lines intersect with the plurality of gate lines near a plurality of sub-pixels. In addition, each of the plurality of sub-pixels includes a thin film transistor, and a pixel electrode. The plurality of sub-pixels includes a plurality of first rows of sub-pixels, and a plurality of second rows of sub-pixels, where the first rows of sub-pixels and the second rows of sub-pixels are interleaved, each sub-pixel in the first rows of sub-pixels is provided with a signal over a second-closest data line, and each sub-pixel in the second rows of sub-pixels is provided with a signal over a first-closest data line.