Backlight Cover with Bent Clasping Sheets for Simplified Assembly

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Solution Overview

Problem

The assembly process of backlight modules is complex and time-consuming, requiring additional materials and screw holes for a secure connection, which complicates the manufacturing process.

Innovation Solution

A cover for the backlight module featuring bent clasping sheets arranged on its edges, which are fixed in a groove cavity between the backplane and front frame, reducing the need for screw holes and simplifying assembly by aligning fixing holes with existing screw holes on the backplane and front frame.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Strength

If traditional screw holes are used to fix the cover to the backplane, then the connection strength is improved, but the manufacturing process complexity and material cost increase

Engineering Contradiction:
Improveconnection strengthVSAvoidmanufacturing process complexity
Core Design Contradiction:
StrengthVSDevice complexity

Solution Approach 1:

The cover is divided into a main body and separate bent clasping sheets. The clasping sheets are inserted into groove cavities on the backplane and folded back to form clamping structures, separating the fixing function from the cover body and enabling simpler assembly

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The bent clasping sheets are inserted into groove cavities on the backplane, with the sheets nested within the grooves and folded back to create a compact, integrated fixing structure that reduces the need for additional components

Inventive Principle:
Principle #7Nested doll (Nesting)

2Strength

If more screw holes are added to strengthen the connection, then the connection strength is improved, but the assembly time and process complexity increase

Engineering Contradiction:
Improveconnection strengthVSAvoidassembly time
Core Design Contradiction:
StrengthVSLoss of time

Solution Approach 1:

The bent clasping sheets are pre-formed with specific curvature and thickness to enable automatic engagement with the groove cavities during assembly, eliminating the need for time-consuming screw fastening operations

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The traditional screw-fastening mechanical system is replaced with a elastic deformation-based clamping system, where the bent clasping sheets deform elastically to engage with the groove cavities, achieving both strength and speed

Inventive Principle:
Principle #28Mechanics substitution (Replace mechanical system)

3Strength

If the cover is assembled after all backlight components are assembled, then the connection strength is improved, but the overall assembly process becomes more complex and time-consuming

Engineering Contradiction:
Improveconnection strengthVSAvoidassembly efficiency
Core Design Contradiction:
StrengthVSProductivity

Solution Approach 1:

The bent clasping sheets are designed to be inserted into the groove cavities before the final assembly steps, allowing the cover to be partially assembled with the backplane early in the process, improving assembly efficiency

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

By separating the cover into a main body and detachable bent clasping sheets, the assembly process is segmented into modular steps, allowing the clasping sheets to be pre-installed and then the main body to be added, improving overall assembly efficiency

Inventive Principle:
Principle #1Segmentation

Data Source

PatentUS9429793B2Cover for backlight module, backlight module, and liquid crystal display
Publication Date: 2016.08.30 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
  • US9429793B2 patent drawing
  • US9429793B2 patent drawing
  • US9429793B2 patent drawing

AI summary

A cover of a backlight module for protecting backlight components is disclosed. The cover includes: a main body; and bent clasping sheets arranged on at least one edge portion of the main body, the clasping sheet is fixed in a groove cavity between a backplane and a front frame so as to fix the cover on the backplane. In addition, a backlight module and a liquid crystal display are disclosed. The above-mentioned cover, the backlight module, and the liquid crystal display may simplify the assembly process of the backlight module, and may reduce the cost at the same time.