Backlight Module Base with Mezzanine Circuit Housing
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Solution Overview
Problem
Conventional backlight modules for LCDs face challenges in reducing assembly time, production cost, and weight due to the direct mounting of circuit components on a metal back plate, which increases component count and weight.
Innovation Solution
A backlight module with a base featuring a mezzanine structure and a slice-shaped circuit, where the mezzanine portion is parallelly offset from the plate portion to form a containing space, allowing the circuit to be inserted between the plate and mezzanine portions, reducing the need for additional protective plates and simplifying assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If circuit components are directly mounted on the rear side of the metal back plate and covered by protective plates, then the circuit components are protected from electric shock and damage, but the number of components increases, assembly time increases, production cost increases, and the weight of the backlight module increases
Solution Approach 1:
The patent merges the protective plate function into the metal back plate itself by forming an integrated base structure. The metal back plate is designed with a recessed portion that directly houses the circuit components, eliminating the need for separate protective plates. This integration reduces the number of components while maintaining the protection function, thereby reducing assembly time and production cost.
Solution Approach 2:
The metal back plate is given multiple functions: it serves as both the structural support base and the protective enclosure for circuit components. The recessed portion of the metal back plate simultaneously provides mechanical support and protection against electric shock, making the single component multi-functional and eliminating the need for separate protective plates.
2Reliability
If circuit components are directly mounted on the rear side of the metal back plate and covered by protective plates, then the circuit components are protected from electric shock and damage, but the weight of the entire backlight module increases
Solution Approach 1:
The protective function is merged into the metal back plate structure itself. The recessed portion formed in the metal back plate serves as both the housing and protective barrier for circuit components, eliminating the need for additional protective plates that would increase weight.
3Reliability
If additional protective plates are provided to cover the inverter and control circuit, then the circuit components are protected from electric shock, but the assembly time and production cost increase
Solution Approach 1:
The protective plate function is merged into the metal back plate by forming an integrated base with a recessed portion. This single-structure design eliminates the need for separate protective plates, thereby reducing the number of assembly steps and reducing assembly time while maintaining protection from electric shock.
Solution Approach 2:
The metal back plate is designed to perform multiple functions simultaneously: providing structural support, housing circuit components, and protecting against electric shock. This multi-functionality eliminates the need for additional protective plates and reduces assembly complexity.
Data Source
AI summary
A backlight module, a base used therein, and a manufacturing method thereof are provided. The backlight module includes a base and a slice-shaped circuit. The base has a back plate including a plate portion and a mezzanine portion. The mezzanine portion is parallelly offset from the plate portion, and the initial position of the mezzanine portion becomes an opening on the plate portion. Because the mezzanine portion is parallelly offset from the plate portion, a containing space is formed between an inner side of the mezzanine portion and the plane of the plate portion. A side of the mezzanine portion and a side of the plate portion corresponding to the opening together form a first slit. The slice-shaped circuit is inserted into the containing space through the first slit and stays between the plate portion and the mezzanine portion.