Elastic Piece Clamping for Flat Panel Display Stability
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Solution Overview
Problem
Conventional LCD panel assembly faces challenges in achieving precise retention rib spacing and is prone to particle contamination and wobbling due to the susceptibility of retention ribs to breakage, leading to clearance issues between the LCD panel and the plastic frame.
Innovation Solution
Incorporating elastic pieces with protrusions in the plastic frame that are curved by a second frame to securely clamp the display panel, reducing the need for high precision in rib spacing and preventing wobbling by enhancing frictional contact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If retention ribs are used to clamp the LCD panel, then the panel is confined in the plastic frame body, but the retention ribs are susceptible to breakage and require high precision spacing
Solution Approach 1:
The retention function is divided into two independent parts: rigid retention ribs for structural support and positioning, and separate elastic pieces for tight clamping. This segmentation allows each component to perform its specific function optimally without the weaknesses of the other.
Solution Approach 2:
The solution combines rigid plastic material for the frame body and retention ribs with elastic material for the elastic pieces. This composite approach integrates the advantages of both material types: structural strength from rigid plastic and flexibility/tightness from elastic material.
2Manufacturing precision
If retention ribs are spaced at ideal distance to clamp the LCD panel, then tightness is improved, but manufacturing precision requirements increase
Solution Approach 1:
The clamping function is segmented between retention ribs (for positioning) and elastic pieces (for tightness). The elastic pieces are designed with predetermined spacing and elasticity, eliminating the need for precise spacing of multiple retention ribs while maintaining effective clamping.
Solution Approach 2:
The elastic pieces are designed with specific elastic parameters (modulus, thickness, spacing) that allow them to provide consistent clamping force without requiring high precision in their positioning. The elasticity compensates for manufacturing tolerances.
3Ease of operation
If retention ribs scrape and collide against the LCD panel during mounting, then the panel is secured, but tiny particles are produced that may contaminate the backlight unit
Solution Approach 1:
The elastic pieces are pre-installed in the plastic frame body to provide a cushioning effect during panel mounting. Their elasticity absorbs impact forces and prevents direct scraping collisions between rigid retention ribs and the panel, thereby preventing particle generation.
Solution Approach 2:
The elastic pieces act as an intermediary element between the rigid retention ribs and the LCD panel. They mediate the clamping force while preventing direct contact and friction between the ribs and panel surface, thus eliminating particle contamination.
4Device complexity
If the LCD panel is secured solely by retention ribs, then the structure is simple, but the panel may wobble within the plastic frame body due to clearance
Solution Approach 1:
The clamping system is segmented into retention ribs for positioning and elastic pieces for tight clamping. This division allows the elastic pieces to eliminate clearances and prevent wobbling while adding minimal complexity to the overall structure.
Solution Approach 2:
The elastic pieces are designed with curved surfaces that conform to the panel edges, providing continuous contact and eliminating clearances more effectively than straight rigid ribs, thereby preventing panel wobble.
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 elastic piece design simplifies assembly, increases structural strength, and prevents particle contamination by ensuring a secure fit between the display panel and frames, thereby stabilizing the panel and reducing wear.
Implementation Method 1
The elastic piece is disposed in the breach of the sidewall. The second frame presses the elastic piece so that the elastic piece is curved to contact a side of the display panel
Data Source
AI summary
A flat panel display module comprises a display panel clamped by a first frame and a second frame structure. The first frame includes a sidewall and an elastic piece, wherein the sidewall encloses the display panel and has a breach. The elastic piece is disposed in the breach of the sidewall. The second frame can be assembled on the first frame. The second frame presses the elastic piece so that the elastic piece is curved to contact a side of the display panel.