Liquid Crystal Display Panel With Independent Common Electrodes

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Solution Overview

Problem

Existing liquid crystal display panels lack flexibility in operation due to limited control over the common electrode potential, which restricts the panel's usage and operational capabilities.

Innovation Solution

The implementation of multiple independent common electrodes allows for more flexible operation by enabling different pixels to be coupled to various common electrodes, enhancing control over pixel capacitor voltages and thus the display's brightness and color.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a single common electrode is used in the liquid crystal display panel, then the device complexity is reduced and manufacturing is simplified, but the operational flexibility and usage capabilities are limited

Engineering Contradiction:
Improveoperational flexibilityVSAvoidnumber of common electrodes
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The common electrode is divided into multiple independent segments (first common electrode and second common electrode), each capable of being controlled independently. This segmentation allows different regions or groups of pixels to be addressed with different common electrode potentials, thereby enabling more flexible display operations and usage modes without significantly complicating the overall device structure

Inventive Principle:
Principle #1Segmentation

2Adaptability or versatility

If multiple independent common electrodes are implemented, then the control over pixel capacitor voltages is enhanced and display operations become more versatile, but the device complexity increases

Engineering Contradiction:
Improvedisplay operation versatilityVSAvoidcommon electrode configuration
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

Different common electrodes are assigned to different pixel groups, allowing each group to have tailored electrical characteristics and control parameters. This local differentiation enables optimized control for specific display modes or regions while maintaining overall system manageability through the systematic assignment of pixels to specific common electrodes

Inventive Principle:
Principle #3Local quality

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This configuration increases the operational flexibility of the liquid crystal display panel by allowing for independent control of pixel voltages, enabling more versatile display operations and improved display characteristics.

Implementation Method 1

Another terminal of the pixel capacitor is coupled to a common electrode, and a potential difference between the two terminals of the pixel capacitor can be used to change a rotating angle of a liquid crystal

Methodology Applied
Scientific EffectCapacitance: Capacitance

Implementation Method 2

a potential difference between the two terminals of the pixel capacitor can be used to change a rotating angle of a liquid crystal, thereby changing a color or a brightness displayed by the liquid crystal display panel

Methodology Applied
Scientific EffectElectro-optic effect: Electro-Optic Effects

Data Source

PatentUS9305504B2Display device and liquid crystal display panel having a plurality of common electrodes
Publication Date: 2016.04.05 NOVATEK MICROELECTRONICS CORP
  • US9305504B2 patent drawing
  • US9305504B2 patent drawing
  • US9305504B2 patent drawing

AI summary

A liquid crystal display panel and a display device are provided. The liquid crystal display includes a first common electrode, a second common electrode and pixels. The second common electrode and the first common electrode are electrically independent from each other. First pixels of the pixels are coupled to the first common electrode, and second pixels of the pixels are coupled to the second common electrode. Accordingly, usage or operation of the liquid crystal display panel is more flexible.