Integrated Light Supply Part for Thin LCD

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Solution Overview

Problem

Liquid crystal displays suffer from light loss and increased thickness and weight due to the separate installation of backlight assemblies, which affects display quality and manufacturing costs.

Innovation Solution

Integrating a light supply part between the array substrate and the opposite substrate, comprising a fluorescent member that emits light in response to an electric field, eliminating the need for a separate backlight assembly and reducing the thickness and weight of the display.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a separate backlight assembly is installed behind the liquid crystal display panel, then the liquid crystal display can be supplied with light, but light loss occurs and the thickness and weight of the display increase

Engineering Contradiction:
ImprovebrightnessVSAvoidlight loss
Core Design Contradiction:
Illumination intensityVSLoss of energy

Solution Approach 1:

The patent merges the backlight assembly and liquid crystal display panel into a single integrated structure. The light supply part is formed on the same substrate as the array layer, eliminating the separate backlight assembly. This integration reduces light loss by directly supplying light to the liquid crystal layer without requiring separate optical sheets, while also reducing the overall thickness and weight of the display device.

Inventive Principle:
Principle #5Merging (Combining)

2Illumination intensity

If a separate backlight assembly is installed behind the liquid crystal display panel, then the liquid crystal display can be supplied with light, but the thickness and weight of the display increase

Engineering Contradiction:
ImprovebrightnessVSAvoidweight
Core Design Contradiction:
Illumination intensityVSWeight of stationary object

Solution Approach 1:

The patent merges the backlight assembly and liquid crystal display panel into a single integrated structure. The light supply part is formed on the same substrate as the array layer, eliminating the separate backlight assembly. This integration reduces light loss by directly supplying light to the liquid crystal layer without requiring separate optical sheets, while also reducing the overall thickness and weight of the display device.

Inventive Principle:
Principle #5Merging (Combining)

3Illumination intensity

If a separate backlight assembly is installed behind the liquid crystal display panel, then the liquid crystal display can be supplied with light, but the thickness of the display increases

Engineering Contradiction:
ImprovebrightnessVSAvoidthickness
Core Design Contradiction:
Illumination intensityVSLength of stationary object

Solution Approach 1:

The patent merges the backlight assembly and liquid crystal display panel into a single integrated structure. The light supply part is formed on the same substrate as the array layer, eliminating the separate backlight assembly. This integration reduces light loss by directly supplying light to the liquid crystal layer without requiring separate optical sheets, while also reducing the overall thickness and weight of the display device.

Inventive Principle:
Principle #5Merging (Combining)

4Illumination intensity

If optical sheets are added to the backlight assembly to enhance brightness, then brightness characteristics are improved, but light loss still occurs due to absorption

Engineering Contradiction:
ImprovebrightnessVSAvoidlight loss
Core Design Contradiction:
Illumination intensityVSLoss of energy

Solution Approach 1:

The patent merges the backlight assembly and liquid crystal display panel into a single integrated structure. The light supply part is formed on the same substrate as the array layer, eliminating the separate backlight assembly. This integration reduces light loss by directly supplying light to the liquid crystal layer without requiring separate optical sheets, while also reducing the overall thickness and weight of the display device.

Inventive Principle:
Principle #5Merging (Combining)

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 light loss and enhances brightness, improving display characteristics while lowering manufacturing costs by integrating the light source within the display panel.

Implementation Method 1

The fluorescent member is disposed between the first and second electrode parts and configured to emit light in response to an electric field generated between the first and second electrode parts

Methodology Applied
Scientific EffectElectroluminescence: Electroluminescence

Data Source

PatentUS7466374B2Liquid crystal display
Publication Date: 2008.12.16 SAMSUNG DISPLAY CO LTD
  • US7466374B2 patent drawing
  • US7466374B2 patent drawing
  • US7466374B2 patent drawing

AI summary

A liquid crystal display includes a liquid crystal layer and a light supply part providing light to the liquid crystal layer, and the liquid crystal layer and the light supply part are disposed between a first base substrate and a second base substrate. The light supply part is located inside the liquid crystal display to reduce a distance between the light supply part and the liquid crystal layer. Thus, the liquid crystal display may have reduced thickness and weight and enhanced brightness, thereby improving the display characteristics of the display.