Rear-Mounted Calibration Device for Bezel-Less Displays

Solution Overview

Problem

Existing display apparatus calibration devices face issues such as foreign material introduction through bezel cuts, electrical problems, and incompatibility with bezel-less structures like OLED TVs, leading to operational issues and reduced reliability.

Innovation Solution

A calibration device mounted on the rear surface of the display panel, featuring a link assembly with a drive motor, torsion spring, and a photographing unit that can be rotated and extended to calibrate the display without exposing internal components, and a slider mechanism that moves between the bezel and display panel to position the photographing unit for calibration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the calibration device is exposed to the outside by rotating in the corner portion of the bezel, then the calibration device can be accessed for operation, but foreign materials including dust are introduced into the inside portion of the display apparatus through the cut space

Engineering Contradiction:

Improveaccessibility of calibration deviceVSAvoidforeign material introduction

Core Design Contradiction:

Ease of operationVSObject-affected harmful factors

Solution Approach 1:

The calibration device is nested within the bezel structure, specifically positioned in the corner portion and rotated into the inside rim portion when needed. This nesting approach allows the calibration device to be concealed during normal operation while remaining accessible when required, without creating permanent openings that would allow foreign material entry.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The calibration device is designed to be dynamically positioned - rotated from a concealed state in the corner portion to an exposed state in the inside rim portion during calibration operations, and then rotated back to the concealed state. This dynamic positioning allows access when needed while maintaining protection against foreign materials during normal operation.

Inventive Principle:

Principle #15Dynamics

2Ease of operation

If the calibration device is exposed to the outside by rotating in the corner portion of the bezel, then the calibration device can be accessed for operation, but the drive means may not operate smoothly due to foreign materials

Engineering Contradiction:

Improveaccessibility of calibration deviceVSAvoidoperation smoothness of drive means

Core Design Contradiction:

Ease of operationVSReliability

Solution Approach 1:

The calibration device is nested within the bezel structure, specifically positioned in the corner portion and rotated into the inside rim portion when needed. This nesting approach allows the calibration device to be concealed during normal operation while remaining accessible when required, without creating permanent openings that would allow foreign material entry.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The calibration device is designed to be dynamically positioned - rotated from a concealed state in the corner portion to an exposed state in the inside rim portion during calibration operations, and then rotated back to the concealed state. This dynamic positioning allows access when needed while maintaining protection against foreign materials during normal operation.

Inventive Principle:

Principle #15Dynamics

3Reliability

If the calibration device is mounted on the rear surface of the display panel, then foreign material introduction is prevented and reliability is improved, but the calibration device cannot be accessed for operation

Engineering Contradiction:

Improveprotection from foreign materialsVSAvoidaccessibility of calibration device

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The calibration device is nested within the bezel structure, specifically positioned in the corner portion and rotated into the inside rim portion when needed. This nesting approach allows the calibration device to be concealed during normal operation while remaining accessible when required, without creating permanent openings that would allow foreign material entry.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The calibration device is designed to be dynamically positioned - rotated from a concealed state in the corner portion to an exposed state in the inside rim portion during calibration operations, and then rotated back to the concealed state. This dynamic positioning allows access when needed while maintaining protection against foreign materials during normal operation.

Inventive Principle:

Principle #15Dynamics

4Ease of repair

If the calibration device is mounted on the rear surface of the display panel, then maintenance is easier and component integrity is maintained, but the calibration device cannot be exposed for calibration operations

Engineering Contradiction:

Improvemaintenance accessibilityVSAvoidcalibration operation accessibility

Core Design Contradiction:

Ease of repairVSEase of operation

Solution Approach 1:

The calibration device is nested within the bezel structure, specifically positioned in the corner portion and rotated into the inside rim portion when needed. This nesting approach allows the calibration device to be concealed during normal operation while remaining accessible when required, without creating permanent openings that would allow foreign material entry.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The calibration device is designed to be dynamically positioned - rotated from a concealed state in the corner portion to an exposed state in the inside rim portion during calibration operations, and then rotated back to the concealed state. This dynamic positioning allows access when needed while maintaining protection against foreign materials during normal operation.

Inventive Principle:

Principle #15Dynamics

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 prevents foreign material introduction, ensures easy maintenance, and supports bezel-less structures like OLED TVs by maintaining the calibration device's internal components' integrity and allowing for seamless calibration without disturbing the screen view.

Implementation Method 1

The calibration device may further include a torsion spring which is provided on a rotating shaft of the multi-node links and rotates the links.

Methodology Applied

Scientific EffectTorsion spring: Torsion Spring

Implementation Method 2

The drive mechanism may include a drive gear which is connected to the rotational shaft of the drive motor, and at least one transmission gear which is geared to the drive gear.

Methodology Applied

Scientific EffectRotational force transfer: Gear

Data Source

PatentUS9900591B2Display apparatus

Publication Date: 2018.02.20 LG ELECTRONICS INC

AI summary

An display apparatus according to an embodiment of the present invention may includes a display panel on which an image is output; and a calibration device which is mounted on a rear surface of the display panel. The calibration device includes a housing, a drive motor which is disposed on an inside portion or an outside portion of the housing, a link assembly which is accommodated in the inside portion of the housing, which is capable of being withdrawn to the outside of the housing by power provided form the drive motor and which is provided to be capable of being bent or being rotated, and an photographing unit which is mounted on an end of the link assembly and photographs the image displayed on the display panel.