automating visual inspection in display … visual inspection in display manufacturing © 2016...

1 S E E T H E D I F F E R E N C E © 2016 Radiant Vision Systems, LLC. All Rights Reserved. Automating Visual Inspection in Display Manufacturing

AUTOMATING VISUAL INSPECTION IN

DISPLAY MANUFACTURING

Presented by Eric Eisenberg

July 27, 2016


TODAY’S SPEAKER

Eric Eisenberg Applications Engineering Manager, Radiant Vision Systems

As Radiant’s Applications Engineering Manager, Eric Eisenberg has developed solutions to help display manufacturers and their upstream suppliers ensure quality and improve efficiencies in their process. With extensive hands-on experience incorporating imaging technology into production facilities worldwide, he has a deep understanding of the technical considerations required for a successful implementation.

Prior to joining Radiant, he held Optical Engineering roles at Lockheed Martin and Terabeam. He is the inventor of multiple patents and has a BS in Laser and Optical Engineering from the Oregon Institute of Technology.


AGENDA

• About Radiant

• The Opportunity

• Customer Requirements

• Solution Components

• Faster, Better, Cheaper

• Challenges

• Examples

• Conclusion

• Q&A


ABOUT RADIANT VISION SYSTEMS

• Designs, manufactures, and sells camera-based inspection solutions that automate visual defect measurement in FPD production testing

• Has thousands of inspection systems testing millions of displays in production settings

• Headquartered in Redmond, WA, USA, with offices in Shanghai, Shenzhen, and Seoul

• Acquired by Konica Minolta in August 2015


HOW IS VISUAL INSPECTION DONE TODAY? • Human Inspectors use eyes to check displays for specific criteria outlined by engineers

Particle Defects Pixel Defects Mura Blobs Light Leakage Patterns

• Done mostly in Asia, operators nearly all young women • High turnover rate, 2-4 months is typical • Inconsistent results • Little or no formal training


THE OPPORTUNITY

• Why is this Happening Now? Display industry still relies predominantly

on human visual inspectors

Measurement resolution and PC power have reached a point that human inspection can be reproduced and often exceeded

Final frontier of display production automation

“Where are all the people?” - “There are too many people.”

Labor Shortages in China


RETURN ON INVESTMENT

• Technical Dividends: System training done once by engineer No variation in results and reproducible analysis/data Doesn’t get tired, quit, complain, or make device dirty Data, logging, trends & record keeping

• Commercial Return: One system can replace 12 or more inspectors Rising labor costs overseas Focus on automation critical for long term corporate

viability Improved working conditions help corporate image


TYPICAL CUSTOMER REQUIREMENTS

• Every Solution is Unique

• Analysis Tailored to the Application

• Speed, Speed, Speed

• Factory & System Integration

• Changing Display Models and Changing Technology

• New and Diverse Measurement Systems Needed and Available


SOLUTION COMPONENTS

• Imaging colorimeters

• Spectrometers and color analyzers

• Software to control them all

• Experienced application engineers with a mix of background and skills, available as needed on site at the production facility


FASTER

• Faster Imaging Colorimeters • Complete Measurements as fast as 0.28 seconds possible • Quad-mode CCD Access • Gigahertz Ethernet Interface

• Full Suite of Konica Minolta Instruments • CA-310 measurements as fast as 0.05 seconds possible

• Faster computers • Analysis software fully multi-threaded to utilize all available CPU cores

• Creative solutions • Algorithm optimization • Multi-channel throughput • Distributed processing


…BETTER…

• Full solution integration into factory systems • Modular solution can be tailored to any

environment • Any Konica Minolta product can be integrated for

best fit • MES integration, SFC integration • In-line vs Off-line inspection • Writing to flash memory or android push • Report generation • Operator GUI

• Changing display models and changing technology • LCD vs OLED • Rising resolutions • More demanding customers and competition


…AND CHEAPER

• Wide product portfolio with good balance of cost, resolution and speed

• Spectrometer and Color Analyzer solutions for specific applications

• Superior Return on Investment

• Quality solution from trusted supplier with warranties and long term support that maximizes value of the investment over time


CHALLENGES THAT CAN BE OVERCOME • Humans are highly adaptable and can move about

• Multi-camera, moving parts, spotter & snipper • Equivalent inspection without angle

• Unique specific solution are needed within a short development window • Large local engineering teams in multiple countries with over 60 in China • Work with customer to prioritize solutions and work to deliver a working system • “Around the clock development” – issues raised in Asia are resolved “overnight” by US

based engineers for implementation the next morning • Rapid turnaround from every team for development, implementation, and verification

• Solutions must be upgraded and constantly adapted to new technologies • Technical knowhow and earning the customer’s trust is key • Constant technical communication between engineering teams


DISPLAY QUALITY TESTING EXAMPLE

• Display Uniformity

• Test Lv and Color Uniformity

• One of the most popular tests

• Register Active Display Area

• Pass/Fail Criteria

• Rich analysis results


DISPLAY PARTICLE & PIXEL TESTING EXAMPLE • Particle & Pixel Defects

• Exact Coordinate Pixel Defect Detect


NEW TYPES OF DISPLAYS NEED INSPECTION

• Virtual Reality

• Augmented Reality

• Internet Of Things


BEYOND HUMAN REPLACEMENT

• Gamma Correction

• White Color Balance

• LCD Correction

• OLED Correction


IN CONCLUSION • Convergence of imaging colorimeter, algorithm and computing

technology makes replacement of human visual inspectors viable

• Replacing human inspectors requires a dedicated partner with the right portfolio of tools to succeed

• Integration of full suite of Konica Minolta Sensing technologies results in cost reduction, saved space and faster cycle times

• Radiant has 1000s of cameras inspecting millions of devices, all with multiple different test requirements; we have the experience needed to create specific automated solutions for nearly any display test


THANK YOU! Questions? [email protected]

automating visual inspection in display … visual inspection in display manufacturing © 2016...

Documents