Segmented Back Frame and Conductive Reflector for Flat Panel Displays
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Solution Overview
Problem
Conventional liquid crystal display devices have high material and mold costs due to complex and large-sized back frames, and they do not effectively prevent electromagnetic interference.
Innovation Solution
A flat panel display device and stereoscopic display device with a back frame composed of multiple primary assembling pieces forming a main frame structure, combined with a conductive fiber net in the reflector plate to prevent electromagnetic interference and reduce material and mold costs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a unitary back frame is made with metal stamping or plastic injection molding, then the back frame structure is complete and provides full support, but the material cost is high and the mold cost is high
Solution Approach 1:
The back frame is divided into multiple separate components (first back frame component, second back frame component, third back frame component) that are joined together to form the complete back frame structure. This segmentation allows each component to be manufactured separately using simpler, smaller molds, reducing both material waste and mold costs while maintaining the overall structural integrity and support capability of the back frame.
2Area of stationary object
If a large-sized back frame is used, then it can accommodate large-sized liquid crystal panels, but large-sized stamping equipment is required and the mold size and structure become complicated
Solution Approach 1:
The large back frame is segmented into multiple smaller components that can be manufactured using smaller, more accessible stamping equipment. Each component is produced with simpler molds, and then assembled together to form the complete large-sized back frame, avoiding the need for large and complex single-piece molds.
Solution Approach 2:
Multiple separately manufactured back frame components are joined together through joining structures to form the complete back frame assembly. This merging of components achieves the required large size and structural complexity without requiring large-sized stamping equipment or complicated single-piece molds.
3Strength
If conventional back frame materials are used, then the back frame provides structural support, but electromagnetic interference is not prevented
Solution Approach 1:
The back frame components are made from composite materials that combine structural support properties with electromagnetic shielding properties. This allows the back frame to simultaneously provide mechanical support and prevent electromagnetic interference without compromising either function.
Solution Approach 2:
The back frame components are designed to perform multiple functions: providing structural support, enabling assembly through joining structures, and preventing electromagnetic interference. This multi-functionality is achieved by integrating electromagnetic shielding materials into the back frame components themselves.
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 simplifies the back frame mold structure, reduces material usage, and integrates electromagnetic interference prevention, lowering manufacturing costs while maintaining effective display performance.
Implementation Method 1
the reflector plate has a substrate comprising a conductive fiber net for preventing electromagnetic interference
Data Source
AI summary
The present invention provides a flat panel display device and a stereoscopic display device. The flat panel display device includes a backlight system and a display panel. The backlight system includes a reflector plate and a back frame and the back frame carries the reflector plate. The back frame includes at least two primary assembling pieces, the at least two primary assembling pieces being joined to form a main frame structure of the back frame; and the reflector plate has a substrate containing a conductive fiber net for preventing electromagnetic interference. With the above arrangement, the lat panel display device and the stereoscopic display device of the present invention have a backlight system, which has a back frame having a simple structure, saves material for the back frame, and reduces the cost of the back frame. Further, the present invention integrates a conductive fiber net in a substrate of a reflector plate for preventing electromagnetic interference so that the flat panel display device and the stereoscopic display device that use a joined back frame of the present invention can achieve the purpose of preventing electromagnetic interference with an easy manner and thus further reduce the manufacturing cost of the flat panel display device and the stereoscopic display device.