LCD Guide Panel Rib Fixation for PCB Stability
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Solution Overview
Problem
Existing liquid crystal display (LCD) devices face issues with firmly fixing printed circuit boards (PCBs) due to moving friction, which can cause damage, and the use of adhesive silicon pads increases costs and complicates manufacturing processes.
Innovation Solution
The implementation of a guide panel with upper and lower ribs that securely hold the PCB, eliminating the need for additional adhesives by forming grooves and protrusions to stabilize the PCB during assembly and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If protrusions and holes are used to fix the PCB to the guide panel, then the PCB can be firmly fixed, but moving friction between the PCB and peripheral devices can cause damage to the PCB
Solution Approach 1:
A silicon pad with adhesive is introduced as an intermediary layer between the PCB and the guide panel. The silicon pad includes a protrusion that fits into a hole in the guide panel, while the adhesive layer provides cushioning and friction reduction, preventing direct contact and moving friction damage between the PCB and the guide panel structure.
2Strength
If adhesive silicon pad is used to fix the PCB, then the PCB can be fixed to the guide panel, but the adhesive hardens with time reducing adhesive strength
Solution Approach 1:
The invention changes the physical state and properties of the adhesive material by using a silicon pad with specific physical properties (elasticity, cushioning) combined with the adhesive. The silicon pad's elastic properties allow it to maintain constant pressure and bonding strength over time, preventing the adhesive from hardening and losing its bonding capability.
3Strength
If silicon pad with adhesive is used to fix the PCB, then the PCB can be fixed to the guide panel, but manufacturing costs increase and processes become complicated
Solution Approach 1:
The invention merges the fixing function and the cushioning function into a single integrated silicon pad component. The silicon pad combines the mechanical protrusion for structural fixing with the adhesive layer for bonding, eliminating the need for separate fixing mechanisms and reducing manufacturing steps while maintaining strong fixation.
Data Source
AI summary
A liquid crystal display (LCD) device includes an LCD panel, a printed circuit board, and a guide panel which supports the LCD panel and to which the printed circuit board is fixed, wherein the guide panel has at least one rib to hold the printed circuit board.