Touch-LCD Integration via Dynamic Post Clearance
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Solution Overview
Problem
Conventional display devices integrating a touch panel and a liquid crystal panel by bonding face issues with absorbing variation in attachment dimensions, leading to potential display failures and peeling between panels.
Innovation Solution
The integration includes a liquid crystal panel bonded to a touch panel with a rear-facing panel, brackets between the panel and holder, and posts and screws that allow for displacement to absorb dimensional variations, using through-holes of specific diameters to accommodate these adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the touch panel and liquid crystal panel are integrated by bonding, then the image display quality is improved, but the variation in attachment dimension cannot be absorbed
Solution Approach 1:
The patent makes the attachment structure dynamic by providing clearance between the post and through-hole, allowing the liquid crystal panel to move slightly in the right-left direction to absorb attachment dimension variations, while maintaining firm bonding for image quality
Solution Approach 2:
The patent changes the dimensional parameters by making the through-hole diameter larger than the post outer diameter, creating a size difference that enables movement to absorb variations while maintaining secure attachment
2Strength
If the liquid crystal panel is attached rigidly to prevent movement, then the attachment strength is improved, but the load from dimension variation causes display failure or peeling
Solution Approach 1:
The patent creates a dynamic attachment system where the liquid crystal panel can move within clearance limits, absorbing dimension variation loads without causing display failure or peeling, while maintaining sufficient attachment strength through the post-Through-hole connection
3Adaptability or versatility
If the through-hole diameter is made larger to accommodate post displacement, then the ability to absorb dimension variation is improved, but the holding force between panels may be reduced
Solution Approach 1:
The patent optimizes the parameter difference between through-hole diameter and post outer diameter, creating sufficient clearance for displacement while maintaining adequate holding force through the friction and geometric constraint of the post-Through-hole connection
Data Source
AI summary
A display device includes: a liquid crystal panel which is integrated with a touch panel by bonding to the rear face of the touch panel; a panel which is provided behind the liquid crystal panel, and to which the touch panel is attached; a bracket which is provided between the panel and a holder that is provided behind the panel; a post which projects from the rear face of the liquid crystal panel in the rear direction; a through-hole which is formed in the panel in such a way as to allow the post to pass through the through-hole, and which has a hole diameter that is larger than the outer diameter of the post; and a through-hole which is formed in the bracket in such a way as to allow a screw fastened to the post, to pass through the through-hole, and which has a hole diameter that is larger than the screw diameter of the screw and smaller than the outer diameter of the post.