Liquid Crystal Display Frame Relief Part Abrasion Control
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Solution Overview
Problem
In liquid crystal display devices, unintended minute deformations during the assembly of frames lead to direct contact issues, causing abrasion and shavings, particularly due to oscillation or impact, which results in foreign particles and display defects.
Innovation Solution
A relief part is introduced between the frames, forming a clearance between the fitting claw's peripheral part and the adjacent frame, preventing direct contact and thus minimizing abrasion and shavings.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the upper end part of the frame is in direct contact with the side surface of the other frame to prevent backlash, then the stability of the frame structure is improved, but the projecting portion causes direct contact leading to abrasion and shavings
Solution Approach 1:
The invention applies local quality by providing a relief part only in the specific region where the projecting portion is generated (peripheral part of the base end of the fitting claw), while maintaining direct contact in other areas to prevent backlash. This localized modification allows the frame to maintain overall stability while preventing abrasion only where the projecting portion causes harm.
Solution Approach 2:
The relief part acts as an intermediary feature that mediates between the fitting claw and the other frame. By creating a localized clearance, the relief part prevents the projecting portion from directly contacting the frame, thereby eliminating the harmful abrasion and shavings while allowing controlled contact in other areas to maintain stability.
2Device complexity
If the fitting claw is formed by narrowing process to reduce components, then the device complexity is reduced, but the projecting portion occurs causing direct contact and shavings
Solution Approach 1:
The invention converts the harmful effect of the projecting portion (unintended deformation from narrowing process) into a beneficial solution by designing the relief part to accommodate this deformation. Instead of eliminating the projecting portion or changing the narrowing process, the relief part transforms the potential harm into a controlled clearance that prevents abrasion while maintaining the simplified single-component fitting claw structure.
3Object-generated harmful factors
If the upper end part of the frame is separated from the other frame to avoid direct contact, then abrasion is reduced, but backlash occurs reducing stability
Solution Approach 1:
The invention applies local quality by creating a clearance only in the specific region where the projecting portion exists (through the relief part), while maintaining direct contact between the upper end part of the frame and the side surface of the other frame in all other areas. This selective separation prevents abrasion locally while preserving overall assembly stability through maintained contact elsewhere.
Data Source
AI summary
It is an object to provide a liquid crystal display device capable of suppressing an abrasion of a first frame or a second frame due to a direct contact between the first frame and the second frame and an occurrence of shavings. A liquid crystal display device includes a rear frame being made of a metal and having a fitting claw, for being fitted with other component, which is formed by cutting and raising a part of a sidewall part from an upper end part side to project toward one surface side of the sidewall part, a middle frame being disposed to face an upper end part of the rear frame, and a relief part forming a clearance between a peripheral part of a base end of the fitting claw in the upper end part of the rear frame and a part of the middle frame facing the peripheral part.