Segmented Back Frame with Resilient Circuit Board Clamping
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Solution Overview
Problem
Conventional back frames for liquid crystal display devices are costly due to high material and mold expenses, and they complicate the fixation of circuit boards.
Innovation Solution
A back frame comprising multiple assembling pieces joined to form a main frame structure, with bracing pieces that include suspension, bearing, and resilient sections to securely fix circuit boards, 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 structure is complete and strong, but material consumption increases and material cost becomes high
Solution Approach 1:
The back frame is divided into multiple assembling pieces (first back frame piece, second back frame piece, third back frame piece) instead of being a single unitary structure. These segmented pieces are joined together through connecting structures (such as hooks, slots, or fasteners) to form the complete back frame, thereby reducing material consumption while maintaining structural strength.
2Area of stationary object
If a large-sized back frame is used, then the back frame can accommodate larger display panels, but large-sized stamping equipment is required and mold size becomes large with complicated structure, making mold expenditure high
Solution Approach 1:
The large-sized back frame is segmented into multiple smaller assembling pieces that can be manufactured using standard-sized molds. These pieces are then assembled to form the complete large-sized back frame, avoiding the need for large and complicated molds while still accommodating larger display panels.
Solution Approach 2:
The modular assembling pieces can be used across different back frame sizes and configurations. By designing universal connecting structures and standardized components, the same mold designs can serve multiple product variants, reducing overall mold expenditure and complexity.
3Strength
If a conventional unitary back frame is used, then the back frame provides structural support, but the circuit board cannot be easily fixed
Solution Approach 1:
The back frame is segmented to include dedicated circuit board fixing pieces with clamping structures. These fixing pieces are integrated into the modular back frame assembly, allowing the circuit board to be easily clamped and positioned without compromising the overall structural support function of the back frame.
Solution Approach 2:
Dedicated circuit board fixing pieces act as intermediaries between the back frame structure and the circuit board. These fixing pieces provide specialized clamping and positioning features that facilitate easy circuit board installation while the main back frame pieces continue to provide structural support.
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 results in a cost-effective back frame with simplified structure and improved circuit board fixation, reducing material consumption and manufacturing costs while allowing for flexible size adjustments.
Implementation Method 1
The first resilient bent section is located between the first bearing section and the bracing body and is 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 clamp a first side edge of the circuit board.
Data Source
AI summary
The present invention provides a back frame and a backlight system of a flat panel display device. The back frame includes at least two assembling pieces. The at least two assembling pieces are joined to form the back frame. The back frame further includes a bracing piece fixed to the assembling pieces and the bracing piece functions to fix 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 fixed to the assembling pieces. The first suspension section extends from the bracing body toward one side of the bracing body. The first bearing section is spaced from the bracing body and extends from the first suspension section toward one side of the first suspension section. The first resilient bent section is located between the first bearing section and the bracing body and is 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 clamp a first side edge of the circuit board. The technical solution provided by the present invention reduces the manufacturing cost of backlighting display device and also saves the expenditure of mold and overcomes the problem that a circuit board cannot be easily fixed.