Display Frame Pawl Mechanism for Grip Force Isolation

Solution Overview

Problem

Existing display devices with liquid crystal panels suffer from display quality deterioration due to direct transmission of grip force, leading to display unevenness, as the frames either come too close or detach, applying unwanted loads on the panel.

Innovation Solution

The implementation of come-off preventing pawls and engagement parts, along with push-in preventing pawls and abutting parts on the frames, prevents the frames from coming too close or detaching, thereby isolating the display panel from grip forces and maintaining display quality.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the frames are allowed to come close to each other within a predetermined distance to prevent detachment, then the engagement structure provides secure attachment, but grip force is transmitted to the display panel causing display unevenness

Engineering Contradiction:

Improveattachment securityVSAvoiddisplay unevenness

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The patent introduces a cushioning member as an intermediary element between the first and second frames. This cushioning member absorbs grip force applied to the frames, preventing direct transmission of force to the display panel while maintaining the engagement structure's attachment security. The cushioning member acts as a mediator that decouples the mechanical connection from the display panel protection function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent implements a cushioning member in advance within the engagement structure to prevent display unevenness before it occurs. This prior cushioning approach ensures that when grip force is applied during use or testing, the force is absorbed by the cushioning member rather than being transmitted to the display panel, thus preventing display unevenness from the outset.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

2Object-affected harmful factors

If a rubber cushion is used to transmit grip force only to the upper glass substrate, then display unevenness is suppressed, but the liquid crystal display panel bends when one side is griped strongly in a cantilever manner

Engineering Contradiction:

Improvedisplay unevennessVSAvoidpanel stability

Core Design Contradiction:

Object-affected harmful factorsVSStability of the object's composition

Solution Approach 1:

The patent implements a cushioning member in advance within the engagement structure to prevent display unevenness before it occurs. This prior cushioning approach ensures that when grip force is applied during use or testing, the force is absorbed by the cushioning member rather than being transmitted to the display panel, thus preventing display unevenness from the outset.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The patent introduces a support structure that provides counter-support to the display panel when one side is griped strongly. This counterweight approach prevents the panel from bending by providing opposing support forces through the frame structure and cushioning member, maintaining panel stability even under asymmetric loading conditions.

Inventive Principle:

Principle #8Anti-weight (Counterweight)

3Reliability

If the frames are rigidly connected to prevent any movement, then attachment security is maximized, but grip force is directly transmitted to the display panel

Engineering Contradiction:

Improveattachment securityVSAvoidgrip force transmission

Core Design Contradiction:

ReliabilityVSForce

Solution Approach 1:

The patent introduces a cushioning member as an intermediary element between the first and second frames. This cushioning member absorbs grip force applied to the frames, preventing direct transmission of force to the display panel while maintaining the engagement structure's attachment security. The cushioning member acts as a mediator that decouples the mechanical connection from the display panel protection function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent changes the mechanical parameters of the engagement structure by introducing a cushioning member with specific elasticity and damping characteristics. This parameter change allows the structure to maintain rigid connection for attachment security while simultaneously providing force absorption to prevent grip force transmission to the display panel.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS9449540B2Display device

Publication Date: 2016.09.20 MAGNOLIA WHITE CORP

AI summary

An upper frame and a lower frame are prevented from coming close to each other within a predetermined distance by a push-in preventing pawl and an abutting part, while preventing the upper and lower frames from coming off by a come-off preventing pawl and an engagement part. In this manner, it becomes possible to prevent the load which causes deterioration of the display quality from being applied to a liquid crystal display panel, so that the reliability can be enhanced.