Array Substrate Multiplexer for LCD Polarization Prevention

Solution Overview

Problem

Liquid crystal display panels face challenges in preventing polarization phenomena and reducing power consumption, particularly due to the polarization of data signals in liquid crystal molecules and high power consumption associated with level variations in data driver chips.

Innovation Solution

The implementation of an array substrate with a multiplexer structure, where data lines are divided into groups and connected to different data ports through switching units controlled by specific control lines, allowing for column inversion and maintaining signal polarity consistency across frames, thereby reducing power consumption and preventing polarization.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If data lines are connected to data ports through switching units with multiplexer structure, then the number of ports of the data driver chip is reduced, but liquid crystal molecules may undergo polarization phenomenon and power consumption increases

Engineering Contradiction:

Improvenumber of portsVSAvoidpower consumption

Core Design Contradiction:

Device complexityVSLoss of energy

Solution Approach 1:

The data lines are divided into multiple groups, with each group connected to a different data port through switching units. This segmentation allows the system to reduce the number of ports required while maintaining proper signal distribution to avoid polarization effects in liquid crystal molecules.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies column inversion by alternating the connection patterns of data lines to different data ports. This inversion strategy ensures that adjacent columns receive signals with opposite polarities, preventing the polarization phenomenon in liquid crystal molecules while using a reduced port configuration.

Inventive Principle:

Principle #13The other way round (Inversion)

2Device complexity

If data lines are connected to data ports through switching units with multiplexer structure, then the number of ports of the data driver chip is reduced, but polarization phenomenon occurs in liquid crystal molecules

Engineering Contradiction:

Improvenumber of portsVSAvoidpolarization phenomenon

Core Design Contradiction:

Device complexityVSObject-affected harmful factors

Solution Approach 1:

The data lines are divided into multiple groups, with each group connected to a different data port through switching units. This segmentation allows the system to reduce the number of ports required while maintaining proper signal distribution to avoid polarization effects in liquid crystal molecules.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies column inversion by alternating the connection patterns of data lines to different data ports. This inversion strategy ensures that adjacent columns receive signals with opposite polarities, preventing the polarization phenomenon in liquid crystal molecules while using a reduced port configuration.

Inventive Principle:

Principle #13The other way round (Inversion)

3Productivity

If level variations are used in data driver chip, then data signals can be transmitted, but power consumption increases

Engineering Contradiction:

Improvedata signal transmissionVSAvoidpower consumption

Core Design Contradiction:

ProductivityVSLoss of energy

Solution Approach 1:

The patent changes the parameter of signal polarity consistency across frames. By maintaining consistent polarity and using column inversion rather than level variations, the system achieves proper data signal transmission while significantly reducing the power consumption associated with frequent polarity changes and level variations in the data driver chip.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS10996529B2Array substrate, liquid crystal display panel and driving method thereof that prevent liquid crystal molecules from undergoing a polarization phenomenon and have low power consumption

Publication Date: 2021.05.04 ORDOS YUANSHENG OPTOELECTRONICS

AI summary

An array substrate includes plural sub-pixels in plural rows and plural columns; plural data ports; Ndl data lines, each of the Ndl data lines connecting to a column of sub-pixels, the Ndl data lines being divided into plural groups, each group including N data lines; and a multiplexer including M control lines and plural switching units in one-to-one correspondence with the Ndl data lines, each control line being connected to and controllingNdlMswitching units. All of the N data lines in each group are connected to one data port through N switching units, respectively, the data lines in different groups are connected to different data ports, the N switching units corresponding to each group are controlled by N different control lines, respectively, and at least two of the N data lines in each group are provided with a data line another group therebetween.