Liquid Crystal Display Heat Diffusing Section for Uniform Temperature

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Solution Overview

Problem

Liquid crystal display panels using cholesteric liquid crystals face display irregularities and slow response times due to temperature variations, which are exacerbated by the need for high electric power consumption from electric heaters to maintain optimal operating conditions.

Innovation Solution

A liquid crystal display configuration that includes a heat diffusing section with a radiating layer and a heat absorbing layer, thermally conducting heat from the circuit substrate to the display panel, allowing for uniform heat distribution and reducing the need for electric heating, thereby improving response times without increasing power consumption.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a heat diffusing section is added to thermally conduct heat from the circuit substrate to the display panel, then display irregularities are reduced and response time is improved, but device complexity increases

Engineering Contradiction:

Improvedisplay uniformityVSAvoidstructure complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

A heat diffusing section is introduced as an intermediary component between the circuit substrate and the liquid crystal display panel. This section includes a heat absorbing layer in contact with the circuit substrate and a heat radiating layer in contact with the display panel, serving as a thermal mediator to redistribute heat uniformly and reduce display irregularities.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The heat diffusing section utilizes waste heat generated by the circuit substrate operations to maintain optimal temperature conditions for the liquid crystal display panel. Instead of requiring external heating power, the system repurposes its own operational heat to improve response time and reduce display irregularities.

Inventive Principle:

Principle #25Self-service

2Speed

If electric power is increased to heat the liquid crystal display, then response time is improved, but power consumption increases

Engineering Contradiction:

Improveresponse timeVSAvoidpower consumption

Core Design Contradiction:

SpeedVSUse of energy by moving object

Solution Approach 1:

The heat generated by the circuit substrate, which would normally be wasted or cause unwanted heating, is converted into a beneficial resource. The heat diffusing section captures and redistributes this waste heat to the liquid crystal display panel, improving response time without requiring additional power consumption for heating.

Inventive Principle:

Principle #22Blessing in disguise (Convert harm into benefit)

Solution Approach 2:

The system uses its own operational heat from the circuit substrate to maintain optimal temperature conditions for the display panel. This self-heating mechanism eliminates the need for external heating power while improving response characteristics.

Inventive Principle:

Principle #25Self-service

3Reliability

If a heat diffusing section is added to distribute heat uniformly, then display irregularities are reduced, but manufacturing complexity increases

Engineering Contradiction:

Improvedisplay uniformityVSAvoidmanufacturing complexity

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The heat diffusing section is divided into distinct functional layers: a heat absorbing layer in contact with the circuit substrate and a heat radiating layer in contact with the display panel. This segmentation allows each layer to be optimized for its specific function and facilitates modular manufacturing and assembly.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The heat diffusing section serves multiple functions simultaneously: it acts as a thermal conductor to transfer heat from the circuit substrate, a heat distributor to eliminate temperature irregularities, and a protective interface between the circuit substrate and display panel. This multi-functionality reduces the need for separate components.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 reduces display irregularities and shortens screen rewriting times by actively utilizing heat generated by the circuit substrate to maintain optimal operating conditions for the liquid crystal display, especially at lower temperatures, without accelerating battery power dissipation in battery-driven devices.

Implementation Method 1

a heat diffusing section disposed in contact with the bottom surface of the display section and a top surface of the substrate and having thermal conductivity higher than the thermal conductivity of air

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS8363203B2Liquid crystal display with rewriting image and heat diffusing section contact bottom surface of display section and electronic apparatus having the same

Publication Date: 2013.01.29 IRIS OPTRONICS INC

AI summary

A liquid crystal display includes a display section performing display using a liquid crystal, a substrate disposed to face a bottom surface of the display section and having a circuit for driving the liquid crystal mounted thereon, and a heat diffusing section disposed in contact with the bottom surface of the display section and a top surface of the substrate and having thermal conductivity higher than the thermal conductivity of air.