KR100558943B1 - 평판 디스플레이 검사방법 - Google Patents
평판 디스플레이 검사방법 Download PDFInfo
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- KR100558943B1 KR100558943B1 KR1020040002657A KR20040002657A KR100558943B1 KR 100558943 B1 KR100558943 B1 KR 100558943B1 KR 1020040002657 A KR1020040002657 A KR 1020040002657A KR 20040002657 A KR20040002657 A KR 20040002657A KR 100558943 B1 KR100558943 B1 KR 100558943B1
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- brightness information
- flat panel
- panel display
- original
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/66—Regeneration of the filtering material or filter elements inside the filter
- B01D46/70—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter
- B01D46/71—Regeneration of the filtering material or filter elements inside the filter by acting counter-currently on the filtering surface, e.g. by flushing on the non-cake side of the filter with pressurised gas, e.g. pulsed air
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/58—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in parallel
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- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S345/00—Computer graphics processing and selective visual display systems
- Y10S345/904—Display with fail/safe testing feature
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Quality & Reliability (AREA)
- Computer Vision & Pattern Recognition (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
- Liquid Crystal (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Description
Claims (5)
- 평판 디스플레이(FPD) 검사방법에 있어서,평판 디스플레이에 영상신호를 인가하고 촬영 장치를 통해 상기 평판 디스플레이의 영상을 획득하는 단계와,획득된 상기 평판 디스플레이의 영상으로부터 위치별 원본밝기정보를 산출하는 단계와,상기 원본밝기정보를 기초로 곡선접합(curve fitting)에 따라 위치별 접합밝기정보를 산출하는 단계와,상기 원본밝기정보와 상기 접합밝기정보의 밝기차를 위치별로 산출하는 단계와,기설정된 허용범위 이상의 상기 원본밝기정보와 상기 접합밝기정보의 밝기차를 갖는 얼룩위치를 검출하는 단계를 포함하는 것을 특징으로 하는 평판 디스플레이 검사방법.
- 평판 디스플레이(FPD) 검사방법에 있어서,평판 디스플레이에 영상신호를 인가하고 촬영 장치를 통해 상기 평판 디스플레이의 영상을 획득하는 단계와,획득된 상기 평판 디스플레이의 영상으로부터 위치별 원본밝기정보를 산출하는 단계와,상기 원본밝기정보를 기초로 곡선접합(curve fitting)에 따라 위치별 접합밝기정보를 산출하는 단계와,상기 원본밝기정보와 상기 접합밝기정보의 밝기차를 위치별로 산출하는 단계와,기설정된 허용범위 이하의 상기 원본밝기정보와 상기 접합밝기정보의 밝기차를 갖는 배경위치를 검출하는 단계와,상기 배경위치의 상기 원본밝기정보를 기초로 곡선접합(curve fitting)에 따라 위치별 배경밝기정보를 산출하는 단계와,상기 원본밝기정보와 상기 배경밝기정보의 밝기차를 위치별로 산출하는 단계와,기설정된 기준범위 이상의 상기 원본밝기정보와 상기 배경밝기정보의 밝기차를 갖는 얼룩위치를 검출하는 단계를 포함하는 것을 특징으로 하는 평판 디스플레이 검사방법.
- 제1항 또는 제2항에 있어서,상기 얼룩위치가 형성하는 얼룩영역의 넓이와 상기 얼룩영역의 콘트라스트에 따라 불량의 정도를 수치로 환산하는 단계와,상기 불량 수치가 기설정된 불량기준치보다 높은 경우 상기 얼룩영역을 최종불량으로 선정하는 단계를 더 포함하는 것을 특징으로 하는 평판 디스플레이 검사방법.
- 제1항 또는 제2항에 있어서,상기 곡선접합(curve fitting)은 최소제곱 근사법(least square regression)에 의하는 것을 특징으로 하는 평판 디스플레이 검사방법.
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KR1020040002657A KR100558943B1 (ko) | 2004-01-14 | 2004-01-14 | 평판 디스플레이 검사방법 |
US10/949,254 US7538750B2 (en) | 2004-01-14 | 2004-09-27 | Method of inspecting a flat panel display |
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KR1020040002657A KR100558943B1 (ko) | 2004-01-14 | 2004-01-14 | 평판 디스플레이 검사방법 |
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KR20050074768A KR20050074768A (ko) | 2005-07-19 |
KR100558943B1 true KR100558943B1 (ko) | 2006-03-10 |
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KR (1) | KR100558943B1 (ko) |
Families Citing this family (10)
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US8184923B2 (en) * | 2004-04-19 | 2012-05-22 | Semiconductor Energy Laboratory Co., Ltd. | Image analysis method, image analysis program, pixel evaluation system having the image analysis method, and pixel evaluation system having the image analysis program |
US8995747B2 (en) | 2010-07-29 | 2015-03-31 | Sharp Laboratories Of America, Inc. | Methods, systems and apparatus for defect detection and classification |
US8331650B2 (en) | 2010-07-29 | 2012-12-11 | Sharp Laboratories Of America, Inc. | Methods, systems and apparatus for defect detection |
KR101966075B1 (ko) * | 2012-12-06 | 2019-04-05 | 엘지디스플레이 주식회사 | 표시장치의 얼룩 검출 장치 및 방법 |
CN104112439A (zh) * | 2014-07-16 | 2014-10-22 | 南靖万利达科技有限公司 | 提高光感应ic数值准确性的方法 |
CN104185019B (zh) * | 2014-07-24 | 2016-07-06 | 青岛歌尔声学科技有限公司 | 一种检测摄像头污点的方法和装置 |
CN106791807B (zh) * | 2014-11-24 | 2018-10-26 | 歌尔科技有限公司 | 一种摄像头模组污点检测的方法和装置 |
KR101802812B1 (ko) * | 2016-04-20 | 2017-11-29 | 주식회사 고영테크놀러지 | 물품의 외관 검사장치 및 이를 이용한 물품의 외관 검사방법 |
US10127689B2 (en) | 2016-12-20 | 2018-11-13 | International Business Machines Corporation | Mobile user interface design testing tool |
CN110837717B (zh) * | 2019-11-06 | 2022-09-06 | 成都数之联科技股份有限公司 | 一种基于Map图的玻璃面板多元缺陷根因分析方法 |
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DE69106302T2 (de) * | 1990-10-05 | 1995-05-18 | Toshiba Kawasaki Kk | Verfahren und Einrichtung zum Steuern eines Flüssigkristallanzeigegeräts. |
JP3343444B2 (ja) * | 1994-07-14 | 2002-11-11 | 株式会社アドバンテスト | Lcdパネル画質検査装置及びlcd画像プリサンプリング方法 |
KR100257742B1 (ko) | 1997-12-16 | 2000-06-01 | 구자홍 | 액정 표시기의 결함 검출장치 및 방법 |
US6947587B1 (en) * | 1998-04-21 | 2005-09-20 | Hitachi, Ltd. | Defect inspection method and apparatus |
KR100293698B1 (ko) | 1998-05-13 | 2001-09-17 | 구자홍 | 플라즈마디스플레이패널의패턴검사기및그검사방법 |
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AU1553601A (en) * | 1999-11-29 | 2001-06-12 | Olympus Optical Co., Ltd. | Defect inspecting system |
JP2001218115A (ja) * | 2000-01-31 | 2001-08-10 | Sony Corp | 固体撮像装置及びその欠陥画素記録方法 |
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JP2003004427A (ja) * | 2001-06-22 | 2003-01-08 | Hitachi Ltd | 画像比較による欠陥検査方法及びその装置 |
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- 2004-01-14 KR KR1020040002657A patent/KR100558943B1/ko active IP Right Grant
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US7538750B2 (en) | 2009-05-26 |
US20050151760A1 (en) | 2005-07-14 |
KR20050074768A (ko) | 2005-07-19 |
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