WO2004070693A3 - Method and apparatus for optical inspection of a display - Google Patents

Method and apparatus for optical inspection of a display Download PDF

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Publication number
WO2004070693A3
WO2004070693A3 PCT/US2004/003217 US2004003217W WO2004070693A3 WO 2004070693 A3 WO2004070693 A3 WO 2004070693A3 US 2004003217 W US2004003217 W US 2004003217W WO 2004070693 A3 WO2004070693 A3 WO 2004070693A3
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WO
WIPO (PCT)
Prior art keywords
display
pixel
sensors
determining
scaling ratios
Prior art date
Application number
PCT/US2004/003217
Other languages
French (fr)
Other versions
WO2004070693A2 (en
Inventor
Reza Safaee-Rad
Aleksander Crnatovic
Jeffrey Hawthorne
Branko Bukal
Ray Leerentveld
Original Assignee
Photon Dynamics Inc
Reza Safaee-Rad
Aleksander Crnatovic
Jeffrey Hawthorne
Branko Bukal
Ray Leerentveld
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Photon Dynamics Inc, Reza Safaee-Rad, Aleksander Crnatovic, Jeffrey Hawthorne, Branko Bukal, Ray Leerentveld filed Critical Photon Dynamics Inc
Priority to JP2006503322A priority Critical patent/JP2006520482A/en
Publication of WO2004070693A2 publication Critical patent/WO2004070693A2/en
Publication of WO2004070693A3 publication Critical patent/WO2004070693A3/en

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F18/00—Pattern recognition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/30—Subject of image; Context of image processing
    • G06T2207/30108—Industrial image inspection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/02—Diagnosis, testing or measuring for television systems or their details for colour television signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N17/00—Diagnosis, testing or measuring for television systems or their details
    • H04N17/04—Diagnosis, testing or measuring for television systems or their details for receivers

Abstract

A method and apparatus for optically inspecting a display employs sub-pixel accuracy for each primary color to take into account angle of rotation (520). The method includes capturing images of a display with R x S sensors, determining sets of sensor coordinates mapping to a pixel (540), determining multiple misalignment angles between the pixel on the display and the R x S sensors, determining multiple x scaling ratios, determining multiple weighting factor associates with RxS sensors in response the corresponding multiple misalignment angle and the corresponding multiple x and y scaling ratios, and inspection the scaled image to identify potential defects of the pixel on the display (580).
PCT/US2004/003217 2003-02-03 2004-02-03 Method and apparatus for optical inspection of a display WO2004070693A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006503322A JP2006520482A (en) 2003-02-03 2004-02-03 Method and system for optical inspection of displays

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US44488903P 2003-02-03 2003-02-03
US60/444,889 2003-02-03

Publications (2)

Publication Number Publication Date
WO2004070693A2 WO2004070693A2 (en) 2004-08-19
WO2004070693A3 true WO2004070693A3 (en) 2004-11-11

Family

ID=32850948

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2004/003217 WO2004070693A2 (en) 2003-02-03 2004-02-03 Method and apparatus for optical inspection of a display

Country Status (6)

Country Link
US (1) US7308157B2 (en)
JP (1) JP2006520482A (en)
KR (1) KR100983943B1 (en)
CN (1) CN100367293C (en)
TW (1) TWI236840B (en)
WO (1) WO2004070693A2 (en)

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US20040213449A1 (en) 2004-10-28
CN1745385A (en) 2006-03-08
KR20050105194A (en) 2005-11-03
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KR100983943B1 (en) 2010-09-27
US7308157B2 (en) 2007-12-11

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