Backlight Module Retention Rack for Quantum Dot Rail Stability

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Solution Overview

Problem

Conventional backlight modules with quantum dot rails face issues of rotation and breakage due to their oval shape and glass packaging, leading to abnormalities in lighting effects and requiring additional retention structures for stability and protection.

Innovation Solution

A backlight module design featuring a retention rack with a trough section to securely mount the quantum dot rail, using doubled-sided adhesive tape for adhesion and screws for fixation, along with a mold frame and cushion section for additional support, to prevent rotation and damage while enhancing color saturation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Illumination intensity

If a quantum dot rail is installed in the backlight module to improve color saturation, then the image color saturation is enhanced, but the quantum dot rail may rotate during assembling and transportation due to its oval shape and glass packaging, leading to abnormalities of lighting effect

Engineering Contradiction:

Improvecolor saturationVSAvoidstability of quantum dot rail

Core Design Contradiction:

Illumination intensityVSReliability

Solution Approach 1:

A retention rack is introduced as an intermediary component between the quantum dot rail and the backlight module structure. The retention rack includes a retaining portion that physically holds the quantum dot rail in a fixed position, preventing rotation and displacement during assembly and transportation while maintaining the lighting function.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The retention rack is designed with a simple structure using inexpensive materials, making it a cost-effective solution that can be easily manufactured and integrated into the backlight module without adding significant complexity or cost.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

2Illumination intensity

If a quantum dot rail packaged with glass is used to enhance color saturation, then the chromaticity is improved, but the glass packaging may readily break, requiring additional retention structures for protection

Engineering Contradiction:

ImprovechromaticityVSAvoidfragility of glass packaging

Core Design Contradiction:

Illumination intensityVSStrength

Solution Approach 1:

The retention rack provides pre-established mechanical support and protection for the glass-packaged quantum dot rail before any damage can occur. By securing the rail in advance during assembly and transportation, the fragile glass packaging is protected from impacts and stresses that would cause breakage.

Inventive Principle:

Principle #11Beforehand cushioning (Prior cushioning)

Solution Approach 2:

The retention rack acts as a protective intermediary between external forces and the fragile glass packaging, absorbing and distributing mechanical stresses away from the quantum dot rail to prevent breakage while allowing the rail to maintain its lighting function.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Reliability

If a retention rack is added to prevent rotation and breakage of the quantum dot rail, then the stability and protection are improved, but the structure becomes more complex

Engineering Contradiction:

Improveprotection of quantum dot railVSAvoidstructural complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The retention rack is designed with a simple, cost-effective structure that minimizes added complexity. It uses basic retaining portions that can be easily integrated into the existing backlight module design without requiring complex mechanisms or additional components.

Inventive Principle:

Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The retention rack is designed to perform multiple functions simultaneously: it retains the quantum dot rail in position, prevents rotation, provides mechanical protection against breakage, and maintains proper spacing. This multi-functionality reduces the need for separate components and minimizes overall structural complexity.

Inventive Principle:

Principle #6Universality (Multi-functionality)

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 effectively enhances color saturation and protects the quantum dot rail from external forces, ensuring a stable and cost-effective backlight module with improved lighting quality.

Implementation Method 1

a quantum dot rail arranged between the backlight source and the light guide plate

Methodology Applied

Scientific EffectPhotoluminescence: Photoluminescence

Implementation Method 2

One side of the quantum dot rail is mounted in the trough section through adhesion

Methodology Applied

Scientific EffectAdhesion: Adhesive

Data Source

PatentUS9904003B2Backlight module

Publication Date: 2018.02.27 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD

AI summary

A backlight module includes a backplane, a light guide plate arranged in the backplane, a backlight source arranged in the backplane and located at one side of the light guide plate, a quantum dot rail arranged between the backlight source and the light guide plate, and a retention rack that is fixedly mounted to the backplane to receive and retain a first side of the quantum dot rail. The retention rack includes a trough section in the form of a concave recess receiving and retaining the first side of quantum dot rail therein. The quantum dot rail has a second side that is opposite to the first side and a reflection sheet is attached to the second side of the quantum dot rail such that the reflection sheet is opposite to the trough section of the retention rack mounted to the backplane.