Backlight Module Fixing Frame and Sealing Piece Assembly
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Solution Overview
Problem
The manufacturing of backlight modules for LCD devices is complicated and costly due to the need for precise positioning of optical units within the backlight module, which requires expensive and hard-to-manufacture back plates and rubber frames.
Innovation Solution
A backlight module design utilizing a fixing frame with a light exit and a sealing piece that positions an optical unit, reducing manufacturing difficulty and material costs by simplifying the assembly process and using cost-effective materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If traditional back plates and rubber frames are used to position the optical unit, then positioning precision is improved, but manufacturing cost and complexity increase
Solution Approach 1:
The patent replaces expensive traditional back plates and rubber frames with a cheap positioning rib structure integrated into the light guide plate. This positioning rib is a simple protruding structure that can be easily molded into the light guide plate during manufacturing, eliminating the need for separate complex positioning components while maintaining adequate positioning function.
Solution Approach 2:
The patent merges the positioning function into the light guide plate itself by integrating positioning ribs directly into its structure. This combines the light guide function and positioning function into a single component, reducing the total number of parts and simplifying the overall assembly structure.
2Manufacturing precision
If traditional back plates and rubber frames are used to position the optical unit, then positioning precision is improved, but material cost increases
Solution Approach 1:
The patent replaces expensive traditional back plates and rubber frames with a cheap positioning rib structure integrated into the light guide plate. This positioning rib is a simple protruding structure that can be easily molded into the light guide plate during manufacturing, eliminating the need for separate complex positioning components while maintaining adequate positioning function.
Solution Approach 2:
The patent uses a single light guide plate material that serves multiple functions: light guidance and positioning. The positioning ribs are formed from the same material as the light guide plate, eliminating the need for additional materials like separate back plates or rubber frames, thus reducing overall material cost.
3Manufacturing precision
If complex assembly processes are used to position the optical unit, then positioning precision is improved, but assembly time increases
Solution Approach 1:
The positioning ribs are pre-formed as integral parts of the light guide plate during the light guide plate manufacturing process. This preliminary action eliminates the need for separate positioning component installation during assembly, reducing assembly steps and time while maintaining positioning precision.
Solution Approach 2:
The patent merges the positioning function into the light guide plate itself by integrating positioning ribs directly into its structure. This combines the light guide function and positioning function into a single component, reducing the total number of parts and simplifying the overall assembly structure.
Data Source
AI summary
A backlight module, a method of assembling the backlight module, and a display device are disclosed. The backlight module includes a fixing frame that has a light exit and a side plate provided with a first opening; an optical unit that is inserted into the fixing frame through the first opening and has a light emitting side opposite to the light exit; and a sealing piece that is engaged with the first opening to close the first opening. Embodiments of the present disclosure can reduce the manufacture difficulty and also material cost of the backlight module.