Segmented Back Plate for Display Device Heat Dissipation

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Solution Overview

Problem

The use of glass back plates in display devices limits thickness thinning due to their thickness and heat insulation characteristics, and the cost of ultra-thin glass makes it difficult to achieve a thin product design, while existing heat dissipation methods through glass back plates are inefficient and costly.

Innovation Solution

A back plate design comprising a thinner metal or plastic first sub-back plate and a thicker glass second sub-back plate, with a gap space formed on the second sub-back plate's surface, allowing for improved heat dissipation and reduced overall thickness, using a hook part and adhesive connections for structural support and heat dissipation holes for enhanced thermal conductivity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Temperature

If a glass back plate is used in display devices, then appearance quality and durability are improved, but thickness cannot be reduced due to heat insulation characteristics

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoidback plate thickness

Core Design Contradiction:

TemperatureVSLength of stationary object

Solution Approach 1:

The back plate is divided into two separate sub-back plates: a first sub-back plate with better heat dissipation properties and a second sub-back plate with glass characteristics for appearance. This segmentation allows each part to fulfill its specific function optimally while working together to achieve both heat dissipation and aesthetic requirements.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The invention uses a composite structure combining different materials with complementary properties. The first sub-back plate uses materials with superior thermal conductivity for heat dissipation, while the second sub-back plate uses glass for appearance quality. Together they form a composite back plate system that achieves both thermal management and aesthetic goals.

Inventive Principle:

Principle #40Composite materials

2Length of stationary object

If ultra-thin glass is used to reduce thickness, then product thinning is achieved, but cost increases significantly

Engineering Contradiction:

Improveback plate thicknessVSAvoidmanufacturing cost

Core Design Contradiction:

Length of stationary objectVSEase of manufacture

Solution Approach 1:

By segmenting the back plate into two parts, the invention avoids the need to use ultra-thin glass for the entire back plate. The first sub-back plate can be made from more economical materials with standard thickness, while only the second sub-back plate requires glass material, significantly reducing overall manufacturing cost compared to using ultra-thin glass throughout.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The first sub-back plate uses cheaper, more readily available materials that are easier to manufacture, replacing the need for expensive ultra-thin glass in the entire back plate structure. This substitution maintains functional requirements while dramatically reducing material costs.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

3Temperature

If glass back plate is used for structural support, then strength is maintained, but heat dissipation efficiency deteriorates

Engineering Contradiction:

Improveheat dissipation efficiencyVSAvoidstructural strength

Core Design Contradiction:

TemperatureVSStrength

Solution Approach 1:

The back plate is segmented into two functional parts: the first sub-back plate dedicated to heat dissipation with appropriate thermal conductivity and structural properties, and the second sub-back plate dedicated to appearance with glass characteristics. This segmentation allows each component to be optimized for its specific function without compromising the other.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The composite structure combines materials with different thermal and mechanical properties. The first sub-back plate uses materials optimized for heat dissipation and structural support, while the second sub-back plate uses glass for appearance. The combination achieves both thermal management and aesthetic requirements that neither material could achieve alone.

Inventive Principle:

Principle #40Composite materials

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 design achieves a more effective heat dissipation and reduced overall thickness of display devices without increasing costs, while maintaining structural integrity and appearance requirements.

Implementation Method 1

a first sub-back plate and a second sub-back plate connected to each other, wherein a thickness of the first sub-back plate is less than a thickness of the second sub-back plate

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Implementation Method 2

a gap space is formed on a second main surface of the first sub-back plate

Methodology Applied

Scientific EffectConvection: Convection

Data Source

PatentUS20210063805A1Back plate, backlight module and display device

Publication Date: 2021.03.04 K TRONICS (SUZHOU) TECH CO LTD

AI summary

A back plate, a backlight module, and a display device are provided. The back plate includes a first sub-back plate and a second sub-back plate connected to each other, wherein a thickness of the first sub-back plate is less than a thickness of the second sub-back plate, at least a part of a first main surface of the first sub-back plate is flush with a first main surface of the second sub-back plate, a gap space is formed on a second main surface of the first sub-back plate, and the first main surface of the first sub-back plate is arranged opposite to the second main surface of the first sub-back plate.