Flat Panel Display Outer Frame Sealing Against Dust Ingress
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Solution Overview
Problem
Conventional CRT displays are bulky and emit harmful radiation, making them unsuitable for modern electronic products, and their replacement, flat panel displays, face issues with dust invasion due to inadequate joining of frame components.
Innovation Solution
A combinative outer frame for flat panel displays (FPDs) is designed, comprising a front frame, a support frame, and an elastic pad, where the support frame's protruding ridge presses into the elastic pad to securely join the frames, preventing dust from entering the FPD module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If double-sided tapes are employed to combine plastic components and metal components of the frame, then the manufacturing process is simple, but the join strength is insufficient and dust can invade the FPD module
Solution Approach 1:
The support frame is divided into multiple sections with ridges created at intervals along the sidewall. These segmented ridges work with the elastic pad to create multiple contact points, distributing the joining force and improving overall connection reliability while maintaining manufacturing simplicity.
Solution Approach 2:
The elastic pad acts as a flexible element that deforms under the pressure of the ridges, creating a tight seal between the support frame and front frame. This flexible component compensates for minor dimensional variations and ensures dust-tight sealing without requiring complex rigid joining structures.
2Reliability
If the frame components are tightly joined to prevent dust invasion, then the sealing performance is improved, but the manufacturing complexity increases
Solution Approach 1:
The elastic pad provides the sealing function with a simple, single-component design. Rather than using complex gaskets, multiple fasteners, or intricate interlocking structures, the patent employs a flexible pad that deforms to create a dust-tight seal, maintaining structural simplicity while achieving reliable sealing.
Solution Approach 2:
The elastic pad serves as an intermediary element between the rigid support frame and front frame. It mediates the connection by providing both sealing and mechanical bonding functions, eliminating the need for complex joining mechanisms while ensuring dust prevention.
3Device complexity
If conventional CRT display design is used, then the structure is simple, but the volume is large and radiation is harmful
Solution Approach 1:
The patent replaces the electron beam gun mechanism of CRT displays with a flat panel structure using semiconductor and optoelectronic technology. This substitution eliminates the need for large vacuum tubes and radiation-generating components, dramatically reducing volume and eliminating harmful radiation while maintaining display functionality.
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 solution enhances the joining of FPD frame components, effectively preventing dust invasion and improving production yield, while being compatible with various FPD types such as LCD, PDP, FED, and OLED.
Implementation Method 1
the ridge on the support frame presses into the elastic pad and consequently interferes with the elastic pad to tightly join the front frame and the support frame
Data Source
AI summary
A combinative outer frame for a flat panel display (FPD) and a FPD and a manufacturing method of the FPD are provided. The outer frame for the FPD includes a front frame, a support frame, and an elastic pad. The support frame is disposed opposite to the front frame and includes a ridge which protrudes upon it; two sides of the elastic pad are joined to the front frame and the support frame respectively so that the ridge is pressed into it. This design causes tighter joining between different components of a frame, so as to prevent dust from invading FPD modules.