Bent Display Heat Spreader Layout for Thin Panel Cooling

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Solution Overview

Problem

As display apparatuses become thinner and lighter with increased performance, they generate more heat, leading to thermal management challenges, particularly in the peripheral areas where control modules are located, which can hinder effective heat dissipation and lead to temperature increases and potential degradation of components.

Innovation Solution

A display apparatus with a heat dissipation member bent to contact both the display panel module and the rear cover, forming a heat transfer path to efficiently dissipate heat generated from the display panel module to the rear cover, while overlapping the control module to manage thermal issues effectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If display apparatus elements are highly integrated to increase performance and resolution, then display performance and resolution are improved, but heat generation increases causing thermal management problems

Engineering Contradiction:

ImproveresolutionVSAvoidheat generation

Core Design Contradiction:

Measurement precisionVSTemperature

Solution Approach 1:

The heat dissipation member extends in the thickness direction (z-axis) of the display apparatus, creating a three-dimensional heat transfer path from the display panel through intermediate structures to the rear cover. This vertical dimensionality allows heat to be conducted away from the high-density pixel circuits without interfering with the horizontal integration of display elements.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Solution Approach 2:

The heat dissipation member acts as an intermediary thermal conduction path between the display panel module and the rear cover. It includes intermediate structures such as the lower cover and heat transfer sheets that facilitate heat transfer from the pixel circuits through multiple layers to the rear cover, which serves as a heat sink.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Length of moving object

If display apparatus is made thinner and lighter, then portability and aesthetics are improved, but heat dissipation capability deteriorates

Engineering Contradiction:

ImprovethicknessVSAvoidheat dissipation capability

Core Design Contradiction:

Length of moving objectVSTemperature

Solution Approach 1:

The heat dissipation member includes a lower cover and heat transfer sheets that function as thin thermal management layers. These flexible thermal paths conduct heat effectively through the thin profile of the display apparatus without requiring bulky heat sinks or cooling mechanisms.

Inventive Principle:

Principle #30Flexible shells and thin films

Solution Approach 2:

By utilizing the thickness direction for heat transfer, the patent enables effective thermal management in thin designs. The heat dissipation path extends vertically from the display panel through the lower cover and heat transfer sheets to the rear cover, allowing thin lateral profiles while maintaining thermal performance.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Adaptability or versatility

If control module is disposed on rear surface to manage electrical functions, then device functionality is improved, but heat accumulation occurs in overlapping areas

Engineering Contradiction:

Improvedevice functionalityVSAvoidheat accumulation

Core Design Contradiction:

Adaptability or versatilityVSTemperature

Solution Approach 1:

The heat dissipation member merges multiple functions: it serves as both a thermal conduction path and a structural component (lower cover). The control module is positioned to overlap with the heat dissipation member, allowing electrical functionality while utilizing the same space for thermal management.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The overlapping arrangement of the control module with the heat dissipation member converts the potential harm of heat accumulation into a benefit. The control module's position is utilized to enhance heat dissipation by placing it directly over the thermal conduction path, where its own heat generation and the display panel's heat are both conducted away together.

Inventive Principle:

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

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 solution effectively reduces temperature increases in critical areas, preventing component degradation and enhancing the quality and lifespan of the display apparatus by ensuring efficient heat dissipation.

Implementation Method 1

a heat dissipation member disposed on the rear surface of the display panel module and including a first portion in contact with the display panel module and a second portion that is farther away from the display panel module than the first portion is

Methodology Applied

Scientific EffectThermal conduction: Conduction (thermal)

Data Source

PatentUS11751431B2Display apparatus and electronic device including the same

Publication Date: 2023.09.05 SAMSUNG DISPLAY CO LTD

AI summary

A display apparatus includes a display panel module including a front surface displaying an image and a rear surface opposite the front surface, and a heat dissipation member disposed on the rear surface of the display panel module and including a first portion, that is in contact with the display panel module, and a second portion that is spaced farther apart from the display panel module than the first portion is. The heat dissipation member includes at least one portion that is bent between the first portion and the second portion with respect to a bending axis parallel to the rear surface.