Display Chassis Downsizing via Segmented Engagement

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Solution Overview

Problem

The existing design of electronic apparatuses with separate main body and display unit chassis hinders downsizing due to the need for sufficient dimensions to accommodate engagement claws and claw receiving parts, which limits the reduction of the display unit chassis dimensions.

Innovation Solution

A display device configuration with a first case section covering the back surface and a second case section between the display and the first case, featuring display engagement parts only on the second case section, allowing for reduced outer dimensions by eliminating the need for engagement with the main case section, and incorporating an elastic member for secure attachment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If engagement claws and claw receiving parts are disposed on the circumference of the display to connect the bezel case section and main case section, then structural integrity and assembly are ensured, but the dimensions of the display unit chassis increase, preventing downsizing

Engineering Contradiction:
Improvedisplay unit chassis volumeVSAvoidstructural integrity
Core Design Contradiction:
Volume of moving objectVSReliability

Solution Approach 1:

The case structure is divided into three distinct sections: the main case section, the bezel case section, and the newly added second case section positioned between them. This segmentation allows the engagement mechanism to be isolated to only the necessary components (display engagement parts on the second case section), eliminating the need for extensive engagement structures on the first case section and enabling dimensional reduction while maintaining structural integrity through distributed functional zones.

Inventive Principle:
Principle #1Segmentation

2Length of moving object

If sufficient dimensions are secured for the bezel case section and main case section to accommodate engagement claws and claw receiving parts, then reliable engagement is achieved, but the overall display unit chassis dimensions increase

Engineering Contradiction:
Improvedisplay unit chassis lengthVSAvoidengagement mechanism installation
Core Design Contradiction:
Length of moving objectVSEase of manufacture

Solution Approach 1:

The engagement function is extracted and concentrated solely on the second case section, which is positioned between the display and the first case section. The display engagement parts are disposed only on this intermediate section, eliminating the need for corresponding engagement structures on the first case section. This extraction allows the first case section to be minimized in dimension while the engagement mechanism remains fully functional and manufacturable.

Inventive Principle:
Principle #2Taking out (Extraction)

3Area of stationary object

If the peripheral edge dimensions of the display are reduced for downsizing, then the display unit chassis can be made more compact, but there is insufficient space for engagement claws and claw receiving parts

Engineering Contradiction:
Improvedisplay unit chassis areaVSAvoidengagement mechanism accommodation
Core Design Contradiction:
Area of stationary objectVSAdaptability or versatility

Solution Approach 1:

The engagement mechanism is relocated from the traditional circumferential position on the first case section to the second case section positioned between the display and the first case section. This dimensional repositioning creates a new spatial zone dedicated to engagement functions, allowing the peripheral edge of the first case section to be minimized for downsizing while the engagement mechanism operates effectively in the intermediate dimension provided by the second case section.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10156866B2Display device and electronic apparatus
Publication Date: 2018.12.18 NEC PERSONAL COMPUTERS LTD
  • US10156866B2 patent drawing
  • US10156866B2 patent drawing
  • US10156866B2 patent drawing

AI summary

In a display device, the display unit chassis is configured by including a peripheral wall section which is disposed to cover the circumference of a liquid crystal panel, and a bezel case section which is disposed between the liquid crystal panel and the peripheral wall section in a state of covering a surface of a peripheral edge of the liquid crystal panel, side-edge sections whose engagement is limited only to the liquid crystal panel are disposed on both of left and right sides of the bezel case section.