Plastic LCD Frame With Side Opening And Sliding Guide
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Solution Overview
Problem
Conventional liquid crystal displays (LCDs) are heavy and costly due to the use of large-sized metallic plates for the top bezel, which limits their application in compact and light designs.
Innovation Solution
A liquid crystal display design featuring a plastic frame with side openings and sliding guides that allows the liquid crystal panel to be easily inserted and secured, reducing the need for a bulky top bezel and minimizing weight and manufacturing costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a large-sized metallic plate is used for the top bezel, then the structural strength is improved, but the weight and manufacturing cost increase
Solution Approach 1:
The patent replaces the expensive metallic top bezel with a plastic frame that can be molded into a large size. The plastic frame achieves sufficient structural strength through its design while being lighter and more cost-effective than metal alternatives.
Solution Approach 2:
The patent uses a composite structure where the plastic frame integrates multiple functions (support, positioning, and protection) that were previously handled by separate metal components. The frame combines plastic material properties with structural design to achieve both light weight and adequate strength.
2Strength
If a large-sized metallic plate is used for the top bezel, then the structural strength is improved, but the manufacturing cost increases
Solution Approach 1:
The patent replaces the expensive metallic top bezel with a plastic frame that can be molded into a large size. The plastic frame achieves sufficient structural strength through its design while being lighter and more cost-effective than metal alternatives.
Solution Approach 2:
The patent changes the material parameter from metal to plastic, which fundamentally alters the manufacturing process from metal forming to plastic molding. This parameter change reduces both material cost and manufacturing complexity while maintaining structural integrity.
3Ease of operation
If the liquid crystal panel is inserted through the opening, then the assembly process is simplified, but the polarizer may be damaged during insertion
Solution Approach 1:
The patent incorporates protective ribs on the inner surface of the frame before the insertion process. These ribs are pre-positioned to guide the panel and prevent direct contact between the panel's polarizer and the frame, thus preventing damage before insertion occurs.
Solution Approach 2:
The protective ribs act as an intermediary element between the frame and the liquid crystal panel. They provide a protective interface that allows the panel to be inserted through the opening while preventing the polarizer from coming into direct contact with potentially damaging surfaces.
Data Source
AI summary
An exemplary liquid crystal display includes a liquid crystal panel, and a plastic frame accommodating the liquid crystal panel. The liquid crystal panel includes a display region, and peripheral regions adjacent to the display region. The plastic frame includes an opening defined in portions where a first side wall is located, two second side walls adjacent to the first side wall, two sliding guides defined at opposite inner sides of portions of the plastic frame that are adjacent to the second side walls, and a stopping board. The opening allows the liquid crystal panel to be inserted into the plastic frame therethrough. The sliding guides communicate with the opening, and are allow the liquid crystal panel to slide into the plastic frame therealong. The stopping board abuts the peripheral regions of the liquid crystal panel for limiting the liquid crystal panel from undesirably departing from the plastic frame.