Resilient Frame Unit for LCD Cost Reduction

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Solution Overview

Problem

The high manufacturing cost and inconvenient assembly of liquid crystal display devices due to the use of mold frames in liquid crystal display devices.

Innovation Solution

A frame unit comprising a resilient fastening element made of silicone or rubber, which replaces the traditional mold frame structure, featuring a back frame with a bottom plate and connected side walls, and a resilient fastening element with a first and second support part, and a side plate, allowing for clamping and support of optical and liquid crystal panels.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mold frame is used to accommodate and fasten optical part and liquid crystal panel, then structural support and protection are provided, but manufacturing cost increases and assembly becomes inconvenient

Engineering Contradiction:
Improvestructural supportVSAvoidmanufacturing cost
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The patent replaces the expensive mold frame with a resilient fastening element made of inexpensive silicone or rubber material. This resilient element can be easily molded and provides sufficient fastening function without the need for costly metal mold frames, directly addressing the high manufacturing cost issue while maintaining the necessary structural support function

Inventive Principle:
Principle #27Cheap short-living objects (Disposable)

Solution Approach 2:

The patent changes the material parameter from rigid metal (mold frame) to elastic polymer (silicone/rubber). This parameter change allows the fastening element to provide both structural support and convenient assembly through its elastic properties, enabling easy installation and removal while reducing manufacturing cost

Inventive Principle:
Principle #35Parameter changes

2Reliability

If mold frame is used to accommodate and fasten optical part and liquid crystal panel, then structural support and protection are provided, but assembly convenience deteriorates

Engineering Contradiction:
Improvestructural supportVSAvoidassembly convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The patent introduces a dynamic resilient fastening element that can elastically deform during assembly. The resilient element compresses to allow insertion of optical parts and liquid crystal panel, then rebounds to provide secure fastening, making assembly convenient while maintaining reliable structural support

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent uses a flexible resilient fastening element made of silicone or rubber that can bend and deform to accommodate assembly variations. This flexibility enables easy assembly and disassembly operations while the element maintains its structural support function through elastic recovery

Inventive Principle:
Principle #30Flexible shells and thin films

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 resilient fastening element reduces the overall cost of the liquid crystal display device and facilitates convenient assembly by providing a cost-effective and efficient means of accommodating and supporting the optical and liquid crystal panels.

Implementation Method 1

The resilient fastening element comprises a first support part, a second support part, and a side plate connected to first support part and second support part, all monolithically formed... The resilient fastening element is made of silicone or rubber

Methodology Applied
Scientific EffectElasticity: Elasticity

Data Source

PatentUS8780293B2Liquid crystal display device, backlight module and frame unit thereof
Publication Date: 2014.07.15 TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD
  • US8780293B2 patent drawing
  • US8780293B2 patent drawing
  • US8780293B2 patent drawing

AI summary

The present invention provides a liquid crystal display device, backlight module and frame unit thereof. The frame unit comprises: back frame and resilient fastening element. The back frame comprises: bottom plate and connected side wall. The bottom plate is for carrying optical part of backlight module. The resilient fastening element comprises a first support part, a second support part, and a side plate. The first support part contacts the bottom plate, the second support part is for supporting liquid crystal panel, and a positioning trench formed between the first support part and the second support part is for clamping a side of the optical part, the second support part is located between the liquid crystal panel and the optical part, and the side plate and the side wall are disposed correspondingly. The present invention can replace known mold frame with frame unit to reduce cost.