Back Frame Segmentation for Flat Panel Display Cost Reduction
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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 struggle with easily fixing circuit boards.
Innovation Solution
A flat panel display device with a back frame comprising primary and secondary assembling pieces and a bracing piece that allows for adjustable mounting, using a bracing body with suspension and bearing sections to resiliently clamp the circuit board, reducing material usage and mold complexity.
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 provides structural support, but the material cost and mold cost increase significantly
Solution Approach 1:
The back frame is divided into multiple assembling pieces (first assembling piece, second assembling piece, etc.) that can be separately manufactured and then assembled together. This segmentation allows each piece to be produced using simpler, less expensive molds rather than requiring a single large complex mold for the entire back frame structure.
Solution Approach 2:
Multiple assembling pieces are combined through assembly to form the complete back frame structure. The assembling pieces are connected via joining structures that integrate them into a unified framework, achieving the required structural support while using multiple simpler components rather than one complex piece.
2Stability of the object's composition
If a unitary back frame is used, then structural integrity is maintained, but the mold size and complexity increase for large-sized displays
Solution Approach 1:
The back frame is segmented into multiple smaller assembling pieces that can be manufactured using smaller, less complex molds. Each piece is designed with standardized joining interfaces that enable them to be assembled into the complete back frame structure, maintaining overall structural integrity while avoiding the need for a single large complex mold.
Solution Approach 2:
The assembling pieces are designed with universal joining structures that can be assembled in different configurations to accommodate various display sizes. The same basic assembling piece design can be used across different product sizes by varying the number and arrangement of pieces, reducing the need for size-specific mold designs.
3Device complexity
If a conventional back frame is used, then the structure is simple, but the circuit board cannot be easily fixed
Solution Approach 1:
The back frame is segmented into multiple assembling pieces, and the circuit board fixation function is integrated into specific pieces (e.g., the second assembling piece). This allows the fixation function to be localized to specific components with dedicated mounting structures, while other pieces maintain structural simplicity.
Solution Approach 2:
The assembling pieces serve as intermediary structures between the back frame and the circuit board. These pieces incorporate specific fixation features (such as mounting holes, clamping structures, or attachment interfaces) that enable easy circuit board installation, while the overall back frame structure remains relatively simple.
4Manufacturing precision
If different back frame molds are provided for different display sizes, then each size can be optimized, but the mold expenditure increases
Solution Approach 1:
The assembling pieces are designed with universal features that allow them to be used across different display sizes. The same basic piece design can be assembled in different quantities and configurations to match various screen sizes, enabling a single mold design to serve multiple product variants and reducing overall mold expenditure.
Solution Approach 2:
By segmenting the back frame into standardized assembling pieces, the patent enables modular assembly for different display sizes. Instead of requiring completely different molds for each size, the same standardized pieces can be assembled in different configurations, reducing the total number of unique molds needed.
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 design lowers the cost of the display device by simplifying the back frame mold, reducing material consumption, and enabling easy fixation of the circuit board, thus reducing manufacturing costs and meeting various mounting requirements with a single bracing piece.
Implementation Method 1
the first resilient bent section being located between the first bearing section and the bracing body and being bent from the first suspension section toward one side of the first suspension section, the first bearing section and the first resilient bent section resiliently clamping a first side edge of the circuit board
Data Source
AI summary
The present invention provides a flat panel display device, which includes a backlight system and a display panel. The backlight system includes a light source, a light homogenization mechanism, and a back frame. The back frame carries the light source and the light homogenization mechanism, and the light homogenization mechanism guides light from the light source into the display panel. The back frame includes primary assembling pieces, secondary assembling pieces, and a bracing piece for fixing a circuit board. The bracing piece includes a bracing body, a first suspension section, a first bearing section, and a first resilient bent section. The bracing body is selectively mounted to different positions of the back frame so that a single bracing piece meets different requirements for mounting. The bracing piece fixes a circuit board so as to overcome the problem that a circuit board cannot be easily fixed. The present invention also provides a stereoscopic display device and a plasma display device. The present invention has a back frame mold having a simple structure, reduces the expenditure of the back frame mold, and also saves the material used for back frame so as to lower down the cost of flat panel display device.