Display Frame PCB Holder Structure for Variable Source Board Sizes

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Solution Overview

Problem

Existing source PCB fixing structures are designed for specific sizes, requiring redesign when the size of the source PCB changes, and they do not accommodate cables of varying lengths, leading to potential damage and increased thickness in display devices.

Innovation Solution

A display device with a frame that includes a rib and a holder structure, allowing for detachable coupling of source PCBs and cables of various sizes and lengths, enhancing rigidity and minimizing thickness.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If a fixed-size source PCB fixing structure is used, then the structure is simple and easy to manufacture, but it cannot accommodate source PCBs of various sizes and cables of various lengths

Engineering Contradiction:
Improveadaptability to various PCB sizes and cable lengthsVSAvoidcomplexity of fixing structure
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The fixing structure is divided into separate functional components: a holder for mounting the source PCB and a separate reinforcing rib. This segmentation allows the holder to be designed for universal compatibility while the rib provides structural support, enabling adaptation to various PCB sizes without redesigning the entire structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The holder is designed with a universal mounting interface that can accommodate source PCBs of different sizes and cables of different lengths. By making the holder multi-functional, a single design serves multiple purposes across different product specifications, eliminating the need for size-specific fixing structures.

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

2Ease of operation

If a rigid fixed-size fixing structure is used, then the structural strength is high, but it cannot be easily adjusted for different sizes and may cause damage

Engineering Contradiction:
Improveease of coupling and decouplingVSAvoidrisk of damage to source PCB
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The fixing structure transitions from a completely rigid design to a semi-rigid design by introducing a detachable holder that can be coupled and decoupled. This dynamic element allows for easy installation and removal while the reinforcing rib maintains structural integrity, reducing the risk of damage during operations.

Inventive Principle:
Principle #15Dynamics

3Productivity

If a traditional source PCB fixing structure is used, then the manufacturing cost is low, but redesign is required when source PCB size changes

Engineering Contradiction:
Improveproduction efficiencyVSAvoidcompatibility with different PCB sizes
Core Design Contradiction:
ProductivityVSAdaptability or versatility

Solution Approach 1:

The holder is designed as a universal component that can mount source PCBs of various sizes without requiring redesign. This universal design enables the same fixing structure to be used across different product models and specifications, significantly improving production efficiency by eliminating repeated redesign cycles.

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

4Strength

If a source PCB fixing structure is added, then the source PCB is securely mounted, but the thickness of the display device increases

Engineering Contradiction:
Improvemounting securityVSAvoidthickness of display device
Core Design Contradiction:
StrengthVSLength of stationary object

Solution Approach 1:

The holder and reinforcing rib are designed to nest within the existing frame structure of the display device. By integrating the fixing components into the available space rather than adding external protrusions, the mounting security is achieved while minimizing the increase in overall device thickness.

Inventive Principle:
Principle #7Nested doll (Nesting)

Data Source

PatentEP4400903B1Display device
Publication Date: 2025.12.31 LG ELECTRONICS INC
  • EP4400903B1 patent drawingFigure 1
  • EP4400903B1 patent drawingFigure 2
  • EP4400903B1 patent drawingFigure 3

AI summary

A display device is disclosed. The display device of the present disclosure may include: a display panel; a frame which is disposed at a rear of the display panel, and to which the display panel is coupled; a board mounted on one surface of the frame; a source PCB disposed on the one surface of the frame and electrically connected to the display panel and the board; a rib protruding from the frame and by which one side of the source PCB is caught; and a holder opposite to the rib with respect to the source PCB and by which the other side of the source PCB is caught, wherein the holder is detachably coupled to the frame.