Backlight Module Frame Assembly With Detachable Sliding Joints

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Solution Overview

Problem

Conventional display devices have complex backlight modules with components that lead to assembly inefficiencies, increased costs due to burrs, residues, and foreign matter, and poor assembly quality.

Innovation Solution

A frame structure comprising an inner frame with joint members and detachable outer frames, which reduces the number of assembly parts by allowing direct sliding engagement, eliminating the need for upper frames and minimizing the risk of burrs and foreign matter entry.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If conventional backlight module components are used, then structural completeness is maintained, but assembly complexity increases and assembly efficiency decreases

Engineering Contradiction:
Improveassembly efficiencyVSAvoidnumber of components
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

The patent merges the upper frame and back frame into a single integrated component called the 'outer frame'. This consolidation reduces the total number of frame components from three (upper frame, back frame, lower frame) to two (inner frame, outer frame), directly addressing the technical contradiction by simplifying the overall structure while maintaining the necessary structural completeness for backlight module assembly.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The frame structure is segmented into modular components (inner frame with first joint member, outer frame with second joint member) that can be independently manufactured and then assembled through detachable coupling. This segmentation allows for simplified individual components that are easier to manufacture with fewer burrs and residues, while the modular assembly process improves overall assembly efficiency.

Inventive Principle:
Principle #1Segmentation

2Reliability

If multiple frame components are assembled, then structural integrity is achieved, but burrs and residues increase affecting assembly quality

Engineering Contradiction:
Improveassembly qualityVSAvoidburs and residues
Core Design Contradiction:
ReliabilityVSObject-generated harmful factors

Solution Approach 1:

By merging the upper frame and back frame into a single outer frame component, the patent reduces the number of interfaces and joining operations required. Fewer assembly operations mean fewer opportunities for generating burrs and residues, directly improving assembly quality while maintaining structural integrity through the integrated design of the outer frame.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The patent extracts and eliminates the upper frame component from the traditional three-component frame structure. This removal reduces the total number of components that need to be assembled, thereby reducing the cumulative generation of burrs and residues across multiple assembly operations, while the outer frame assumes both the structural and protective functions previously distributed across multiple components.

Inventive Principle:
Principle #2Taking out (Extraction)

3Loss of time

If traditional frame assembly method is used, then structural stability is maintained, but assembly time increases

Engineering Contradiction:
Improveassembly timeVSAvoidstructural stability
Core Design Contradiction:
Loss of timeVSStability of the object's composition

Solution Approach 1:

The patent introduces detachable coupling mechanisms (first joint member and second joint member) that enable dynamic assembly and disassembly of the frame components. These joint members feature sliding engagement with positioning structures that provide structural stability when assembled, while allowing for rapid assembly operations that reduce assembly time compared to traditional permanent joining methods.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The joint members are designed with pre-formed positioning structures (grooves, protrusions, or tapered surfaces) that guide the assembly process and automatically align components during assembly. This preliminary design of the coupling interfaces ensures that components self-align and lock into stable positions quickly, reducing assembly time while maintaining structural stability without requiring complex assembly procedures.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS12601945B2Frame structure, backlight module and display device
Publication Date: 2026.04.14 RADIANT OPTO ELECTRONICS CORP
  • US12601945B2 patent drawing
  • US12601945B2 patent drawing
  • US12601945B2 patent drawing

AI summary

A frame structure includes an inner frame and a plurality of outer frames combined with the inner frame. The inner frame has at least one first joint member disposed on its outer surface, and the first joint member extends at least along a first direction. The outer frames are detachably combined with the inner frame along the first direction, so that the inner frame is surrounded by the outer frames. Each of the outer frames has at least one second joint member disposed on its inner surface. Each of the outer frames is combined with the inner frame through the cooperation between the second joint member and the first joint member of the inner frame in the first direction. Assembling the inner frame directly with the outer frames can reduce the number of assembly parts and improve the convenience of assembly and rework. The invention also provides a backlight module and a display device including the frame structure.