Laser Beam Irrigation Apparatus with Piezoelectric Zigzag Motion

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

In display device substrate sealing, mismatched rotational angles between the optical tube of the laser beam irradiation apparatus and the curved sealing line of the frit can lead to defective sealing.

Innovation Solution

A laser beam irradiation apparatus with a rectilinear motion optical tube and piezoelectric transducers that allow the optical fiber to move in a zigzag pattern, enabling precise alignment and irradiation along curved paths without rotating the optical tube, using zero point adjustment units and a control unit to manage the motion and intensity of the laser beam.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If the optical tube is rotated to match the rotational angle of the curved sealing line, then the alignment with the sealing path is improved, but the device complexity and potential for misalignment increase

Engineering Contradiction:

Improvealignment precisionVSAvoidoptical tube rotation mechanism

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

Instead of rotating the optical tube to match the curved sealing line, the patent inverts the approach by keeping the optical tube rectilinear and rotating the entire laser beam irradiation apparatus. This inversion simplifies the optical system while achieving the same alignment goal.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The patent replaces the mechanical rotation of the optical tube with a different mechanical approach: rotating the entire apparatus body. This substitution eliminates the need for complex optical tube rotation mechanisms while maintaining alignment precision along curved paths.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Device complexity

If the optical tube performs rectilinear motion only, then the device complexity is reduced, but the ability to follow curved sealing paths is limited

Engineering Contradiction:

Improveoptical tube motion mechanismVSAvoidcurved path following capability

Core Design Contradiction:

Device complexityVSAdaptability or versatility

Solution Approach 1:

The patent adds rotational freedom to the rectilinear motion system by enabling the entire apparatus to rotate. This dimensional addition allows the optically simple rectilinear optical tube to follow curved sealing paths through the combined motion of translation and rotation of the apparatus body.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If the rotational angle of the optical tube matches the curved path, then the sealing quality is improved, but the alignment precision becomes sensitive to angle mismatches

Engineering Contradiction:

Improvesealing qualityVSAvoidangular alignment precision

Core Design Contradiction:

ReliabilityVSMeasurement precision

Solution Approach 1:

The patent inverts the alignment strategy by keeping the optical tube's angular orientation fixed and rectilinear, while achieving curved path following through rotation of the entire apparatus. This inversion reduces sensitivity to angular mismatch errors in the optical tube itself.

Inventive Principle:

Principle #13The other way round (Inversion)

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

This solution ensures high-quality sealing without mechanical rotation of the optical tube, maintaining alignment with the sealing path and preventing defective sealing, thus enhancing the sealing process efficiency.

Implementation Method 1

a pair of piezoelectric transducers disposed between the optical tube and the end of the optical fiber, and having first ends supporting the optical fiber; wherein each of the pair of piezoelectric transducers performs a rectilinear reciprocating motion in a direction perpendicular to the other of the pair of piezoelectric transducer on a plane perpendicular to the direction in which the laser beam is irradiated

Methodology Applied

Scientific EffectPiezoelectric effect: Piezoelectric Effect

Implementation Method 2

a laser oscillator; an optical fiber for transmitting a laser beam oscillated by the laser oscillator

Methodology Applied

Scientific EffectLaser: Laser

Implementation Method 3

an optical tube for accommodating an end of the optical fiber, and for performing a rectilinear motion on a plane perpendicular to a direction in which the laser beam is irradiated

Methodology Applied

Scientific EffectRectilinear motion:

Data Source

PatentUS8413701B2Laser beam irradiation apparatus and substrate sealing apparatus including the same

Publication Date: 2013.04.09 SAMSUNG DISPLAY CO LTD

AI summary

A laser beam irradiation apparatus comprises: a laser oscillator; an optical fiber for transmitting a laser beam oscillated by the laser oscillator; an optical tube for accommodating an end of the optical fiber, and for performing a rectilinear motion on a plane perpendicular to a direction in which the laser beam is irradiated; and a pair of piezoelectric transducers disposed between the optical tube and the end of the optical fiber, and having first ends supporting the optical fiber. Each piezoelectric transducer performs a rectilinear reciprocating motion in a direction perpendicular to the other piezoelectric transducer on a plane perpendicular to the direction in which the laser beam is irradiated.