Conductive Structure for Display Panel Heat Dissipation

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Solution Overview

Problem

The existing display apparatuses face challenges in reducing thickness and width while maintaining effective heat dissipation and shock absorption functions, leading to potential damage from external impacts and image quality deterioration due to uneven charge distribution and step formation between the cushion plate, back plate, and display panel.

Innovation Solution

A display apparatus design featuring a conductive structure that covers the side surfaces of the adhesive member, back plate, and display panel, with a method involving laser trimming to ensure alignment and uniform coverage, preventing step formation and enhancing heat dissipation and grounding functions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of stationary object

If the size of the cushion plate is reduced, then the weight and manufacturing cost are reduced, but the heat dissipation and shock absorption functions are lowered

Engineering Contradiction:
Improveweight of display apparatusVSAvoidheat dissipation and shock absorption functions
Core Design Contradiction:
Weight of stationary objectVSReliability

Solution Approach 1:

The conductive structure is disposed within the non-display area of the cushion plate, effectively utilizing the space between the display panel and back plate. This nested arrangement allows the conductive structure to perform grounding and heat dissipation functions without increasing the overall device thickness or requiring additional space, thereby maintaining the reduced weight benefit while improving thermal management and electrostatic discharge capability.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Weight of stationary object

If the size of the cushion plate is reduced, then the weight and manufacturing cost are reduced, but a step occurs between the cushion plate and back plate causing display panel damage

Engineering Contradiction:
Improveweight of display apparatusVSAvoidsupport function and damage resistance
Core Design Contradiction:
Weight of stationary objectVSStrength

Solution Approach 1:

The conductive structure is strategically disposed in the non-display area of the cushion plate, providing localized grounding and structural support exactly where needed. This local quality approach ensures that the display panel receives adequate support and protection from external impacts without requiring the entire cushion plate to be large in size, thus maintaining weight reduction while preventing step formation and panel damage.

Inventive Principle:
Principle #3Local quality

3Reliability

If additional components are added to improve grounding and heat dissipation, then the grounding and heat dissipation functions are improved, but the thickness and width of the display apparatus increase

Engineering Contradiction:
Improvegrounding and heat dissipation functionsVSAvoidthickness and width of display apparatus
Core Design Contradiction:
ReliabilityVSLength of stationary object

Solution Approach 1:

The conductive structure performs multiple functions simultaneously: it provides grounding to prevent image quality deterioration, dissipates heat from the display panel and internal components, and offers structural support to prevent step formation. This multi-functionality eliminates the need for separate grounding plates, heat sinks, and support structures, thereby improving reliability without increasing the device thickness or width.

Inventive Principle:
Principle #6Universality (Multi-functionality)

4Reliability

If the conductive structure covers the side surfaces, then the grounding function and charge distribution are improved, but the manufacturing complexity increases

Engineering Contradiction:
Improvegrounding function and charge distributionVSAvoidmanufacturing complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The conductive structure is integrated with the cushion plate assembly, combining the grounding function with the existing structural and thermal management components. This merging approach allows the conductive structure to cover the side surfaces of the display panel and back plate for improved grounding and charge distribution, while utilizing the same manufacturing processes and assembly steps as the cushion plate, thereby minimizing additional manufacturing complexity.

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

The solution effectively reduces the thickness and width of the display apparatus while maintaining heat dissipation and shock absorption functions, preventing damage and improving image quality by ensuring uniform charge distribution and alignment of components.

Implementation Method 1

a conductive structure disposed on one surface of the adhesive member, wherein the conductive structure covers each of a side surface of the adhesive member, a side surface of the back plate, and a side surface of the display panel

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

a method for manufacturing the display apparatus

Methodology Applied
Scientific EffectLaser ablation: Laser Ablation

Data Source

PatentUS11958275B2Display apparatus and method for manufacturing the same
Publication Date: 2024.04.16 LG DISPLAY CO LTD
  • US11958275B2 patent drawing
  • US11958275B2 patent drawing
  • US11958275B2 patent drawing

AI summary

A display apparatus includes a display panel, a back plate disposed on one surface of the display panel, and a cushion plate. The cushion plate includes an adhesive member disposed on one surface of the back plate, and a conductive structure disposed on one surface of the adhesive member, wherein the conductive structure covers each of a side surface of the adhesive member, a side surface of the back plate, and a side surface of the display panel.