Wall-less Mold Design for LCD Panel Alignment
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Solution Overview
Problem
Conventional liquid crystal display devices face challenges in minimizing outside dimensions while maintaining screen size, particularly in compact devices like mobile phones, due to the need for larger mold diameters and mechanical deformation issues that result in inclined display surfaces.
Innovation Solution
The solution involves a mold design without walls, featuring discontinuous projections on edges to prevent panel movement and facilitate elastic deformation, allowing for smaller device dimensions and correcting inclination during assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If a mold with walls is used to accommodate the liquid crystal display panel, then the panel is protected and contained, but the outside dimensions of the device increase due to wall thickness
Solution Approach 1:
The patent removes the wall structure from the mold design. Instead of a traditional enclosed mold with walls, the invention uses a wall-less mold where the liquid crystal display panel is held by projections formed on the mold surface. This extraction of the wall component directly reduces the outside dimensions of the device while maintaining the essential containment function through alternative means (projections and adhesive tape).
Solution Approach 2:
The patent employs adhesive tape as a thin film material to secure the liquid crystal display panel to the mold. This thin film approach replaces the need for thick structural walls, allowing for a more compact overall structure while still providing the necessary holding and protective functions.
2Ease of manufacture
If the liquid crystal display panel is mounted in an inclined posture to fit within the mold, then assembly is simplified, but the display surface becomes inclined relative to the frame
Solution Approach 1:
The patent incorporates projections on the mold surface that are positioned to contact the liquid crystal display panel during assembly. These projections pre-position the panel in the correct orientation before final adhesive bonding occurs. This preliminary positioning action ensures that even if the panel is initially mounted at an angle, it is corrected to the proper alignment during the assembly process, eliminating the need for post-assembly adjustments.
Solution Approach 2:
The projections on the mold serve as a feedback mechanism during assembly. As the liquid crystal display panel is placed on the mold, the projections provide physical contact points that indicate and enforce the correct position and orientation. This immediate feedback during the assembly process prevents incorrect mounting and ensures proper alignment without requiring complex measurement or adjustment procedures.
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
This approach reduces the outside dimensions of the liquid crystal display device by eliminating wall thickness, enables elastic deformation of the mold, and prevents display surface inclination, improving assembly precision and reducing production faults.
Implementation Method 1
The liquid crystal display panel is fixed to the mold with an adhesive tape
Data Source
AI summary
The present inventions enables reduction of outside dimensions of a small-size liquid crystal display device for a mobile phone and also elimination of an inclination of an image display area.A liquid crystal display panel 1 is mounted on a mold 6 made of resin. Because the mold 6 has not a wall surrounding the liquid crystal display panel 1, outside dimensions of the frame 7 can be made smaller. When the mold 6 with the liquid crystal display panel 1 mounted thereof is set in the frame 7, the mold 6 elastically deforms, and an inclination of a display area 31 of the liquid crystal display panel 1 is corrected by projections 62 formed on the mold 6.