JP2004334186A - Amoledの駆動回路を検査する方法および装置 - Google Patents
Amoledの駆動回路を検査する方法および装置 Download PDFInfo
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- JP2004334186A JP2004334186A JP2004117568A JP2004117568A JP2004334186A JP 2004334186 A JP2004334186 A JP 2004334186A JP 2004117568 A JP2004117568 A JP 2004117568A JP 2004117568 A JP2004117568 A JP 2004117568A JP 2004334186 A JP2004334186 A JP 2004334186A
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- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000012360 testing method Methods 0.000 title claims abstract description 11
- 229920001621 AMOLED Polymers 0.000 title abstract description 7
- 239000003990 capacitor Substances 0.000 claims abstract description 54
- 239000011521 glass Substances 0.000 claims abstract description 15
- 238000007599 discharging Methods 0.000 claims description 4
- 239000011159 matrix material Substances 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
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Classifications
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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
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11C—STATIC STORES
- G11C29/00—Checking stores for correct operation ; Subsequent repair; Testing stores during standby or offline operation
- G11C29/02—Detection or location of defective auxiliary circuits, e.g. defective refresh counters
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/08—Active matrix structure, i.e. with use of active elements, inclusive of non-linear two terminal elements, in the pixels together with light emitting or modulating elements
- G09G2300/0809—Several active elements per pixel in active matrix panels
- G09G2300/0842—Several active elements per pixel in active matrix panels forming a memory circuit, e.g. a dynamic memory with one capacitor
-
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Electroluminescent Light Sources (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Control Of El Displays (AREA)
Abstract
【解決手段】 本方法および装置は、検査対象の特定の駆動回路を1つ選択し、OLEDのアレイ・ガラス上に導電板を設けて、キャパシタを形成する。本発明は、AMOLEDのデータ線、走査線、および電源線を用いることによって、駆動回路に信号を入力し、これらから信号を読み出し、各駆動回路が正常か否か分析することができる。
【選択図】 図3
Description
本発明は、有機発光ダイオード(OLED)の挿入に先だって、アクティブ・マトリクス有機発光ディスプレイ(AMOLED)の駆動回路を検査する方法および装置に関する。
1→電源線POWER)。第1トランジスタM1はステップ303において既にオンになっているので、電流が第1トランジスタM1を通過し、第1キャパシタC1を充電する。しかるべき時間期間の後、第1キャパシタC1が完全に充電されると、データ線DL上の電圧レベルは低に切り替わるので、電源線POWER上の電圧レベルは相対的に高となり、逆方向の電気的ループが形成される(電源線POWER→第1キャパシタC1→第1トランジスタM1→データ線DL)。次いで、第1キャパシタC1は、第1トランジスタM1を通じて、データ線DLに向けて放電することができる。したがって、放電期間中に第1キャパシタC1の放電によって生じた目標駆動回路の第1信号を読み出すことができる。
れば、駆動回路の機能性が正常であることが保証される。したがって、本発明の方法は、図2に示す駆動回路だけでなく、ここでは述べないその他の同様の駆動回路でも効果的に検査することができる。
Claims (6)
- 有機発光ダイオードが挿入される前に、アクティブ・マトリクス有機発光ディスプレイ(AMOLED)のアレイ・ガラス上にある複数の駆動回路を検査する方法であって、前記駆動回路の各々は、走査線と、データ線と、電源線と、第1トランジスタと、第2トランジスタと、第1キャパシタとを備え、前記方法は、
(a)前記駆動回路の各々から出力される第1信号および第2信号が読み出されるまで、ステップ(b)〜(e)を繰り返すステップと、
(b)前記走査線を通じて、目標駆動回路をイネーブルするステップと、
(c)前記第1キャパシタを充電し、前記第1トランジスタを通じて前記第1キャパシタが放電されるときに、前記データ線から前記第1信号を読み出すステップと、
(d)前記アレイ・ガラス上に導電板を配置し、該導電板と前記アレイ・ガラスとの間に第2キャパシタを形成するステップと、
(e)前記第2キャパシタを充電し、前記第2トランジスタを通じて前記第2キャパシタが放電されるときに、前記電源線から前記第2信号を読み出すステップと、
(f)前記第1信号および第2信号を分析し、前記目標駆動回路の機能性を判定するステップとを含む方法。 - 請求項1記載の方法において、前記ステップ(c)は、
(g)前記データ線上に高レベル電圧を供給し、前記第1トランジスタを通じて前記第1キャパシタを充電するステップと、
(h)前記データ線上に低レベル電圧を供給し、前記第1トランジスタを通じて前記第1キャパシタを放電するステップと、
(i)前記第1キャパシタが放電されている間に、前記データ線から前記第1信号を読み出すステップとを更に含む方法。 - 請求項1記載の方法において、前記ステップ(e)は、
(j)前記電源線上に高レベル電圧を供給し、前記第2トランジスタを通じて前記第2キャパシタを充電するステップと、
(k)前記電源線上に低レベル電圧を供給し、前記第2トランジスタを通じて前記第2キャパシタを放電するステップと、
(l)前記第2キャパシタを放電している間に、前記電源線から前記第2信号を読み出すステップとを更に含む方法。 - 請求項1記載の方法において、前記第1信号および第2信号が、充電信号、電圧信号、および電流信号のいずれかである方法。
- 請求項1記載の方法において、前記ステップ(f)は、
(m)前記駆動回路の前記第1信号の平均値および前記第2信号の平均値をそれぞれ計算するステップと、
(n)前記駆動回路の各々の前記第1信号の値が、前記第1信号の平均値の±75%以内であるかを判定するステップと、
(o)前記駆動回路の各々の前記第2信号の値が、前記第2信号の平均値の±75%以内であるかを判定するステップとを更に含み、
前記駆動回路の第1信号の値が、当該第1信号の平均値の±75%以内である場合には、前記目標駆動回路の前記第1トランジスタおよび前記第1キャパシタは正常な機能性を有し、前記駆動回路の前記第2信号の値が、当該第2信号の平均値の±75%以内である場合には、前記目標駆動回路の第2トランジスタは正常な機能性を有する方法。 - 有機発光ダイオードが挿入される前に、アクティブ・マトリクス有機発光ディスプレイ
(AMOLED)の複数の駆動回路を検査する装置であって、
目標駆動回路を選択する画素選択デバイスと、
信号を読み出す信号抽出器と、
前記信号抽出器に接続され、前記信号を格納し、分析して、前記目標駆動回路の機能性を判定する信号分析器とを備える装置。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
TW092108518A TWI223097B (en) | 2003-04-14 | 2003-04-14 | Method and apparatus for testing OLED pixels |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004334186A true JP2004334186A (ja) | 2004-11-25 |
JP4358018B2 JP4358018B2 (ja) | 2009-11-04 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2004117568A Expired - Fee Related JP4358018B2 (ja) | 2003-04-14 | 2004-04-13 | Amoledの駆動回路を検査する方法および装置 |
Country Status (3)
Country | Link |
---|---|
US (1) | US7123043B2 (ja) |
JP (1) | JP4358018B2 (ja) |
TW (1) | TWI223097B (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010262225A (ja) * | 2009-05-11 | 2010-11-18 | Panasonic Corp | 画像表示装置及びその修正方法 |
KR20140093354A (ko) * | 2013-01-15 | 2014-07-28 | (주)넥스틴 | 유기 발광 표시 장치 및 그것의 테스트 방법 |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
TWI223713B (en) * | 2003-03-31 | 2004-11-11 | Toppoly Optoelectronics Corp | Method and system for testing driver circuits of AMOLED |
US7429970B2 (en) * | 2005-01-11 | 2008-09-30 | Tpo Displays Corp. | Method for testing drive circuit, testing device and display device |
US7429984B2 (en) * | 2005-02-04 | 2008-09-30 | Philip Morris Usa Inc. | Display management system |
TWI277920B (en) * | 2005-09-15 | 2007-04-01 | Chunghwa Picture Tubes Ltd | Method for applying detecting pixel circuits of active-matrix organic light emitting diode status of system hardware |
US20070123133A1 (en) * | 2005-11-30 | 2007-05-31 | Eastman Kodak Company | OLED devices with color filter array units |
TWI481300B (zh) * | 2009-12-31 | 2015-04-11 | Univ Tsinghua | Organic electroluminescent devices and their test methods |
EP2387021A1 (en) | 2010-05-12 | 2011-11-16 | Dialog Semiconductor GmbH | Driver chip based oled module connectivity test |
KR20150004554A (ko) * | 2013-07-03 | 2015-01-13 | 삼성디스플레이 주식회사 | 화소 및 이를 이용한 유기전계발광 표시장치 |
CN103400546B (zh) * | 2013-07-25 | 2015-08-12 | 合肥京东方光电科技有限公司 | 一种阵列基板及其驱动方法、显示装置 |
CN111610400B (zh) * | 2020-06-02 | 2023-05-02 | 苏州乐轩科技有限公司 | 检测系统及检测方法 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2702807B2 (ja) * | 1990-08-09 | 1998-01-26 | 東芝セラミックス株式会社 | 半導体中の深い不純物準位の測定方法及びその装置 |
JP3246704B2 (ja) * | 1995-02-27 | 2002-01-15 | シャープ株式会社 | 配線基板の検査装置 |
TW578001B (en) * | 2002-10-25 | 2004-03-01 | Toppoly Optoelectronics Corp | Method and system for testing driver circuits of AMOLED |
TWI223713B (en) * | 2003-03-31 | 2004-11-11 | Toppoly Optoelectronics Corp | Method and system for testing driver circuits of AMOLED |
-
2003
- 2003-04-14 TW TW092108518A patent/TWI223097B/zh not_active IP Right Cessation
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2004
- 2004-04-13 JP JP2004117568A patent/JP4358018B2/ja not_active Expired - Fee Related
- 2004-04-13 US US10/822,750 patent/US7123043B2/en not_active Expired - Lifetime
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2010262225A (ja) * | 2009-05-11 | 2010-11-18 | Panasonic Corp | 画像表示装置及びその修正方法 |
KR20140093354A (ko) * | 2013-01-15 | 2014-07-28 | (주)넥스틴 | 유기 발광 표시 장치 및 그것의 테스트 방법 |
KR101987434B1 (ko) * | 2013-01-15 | 2019-10-01 | 삼성디스플레이 주식회사 | 유기 발광 표시 장치 및 그것의 테스트 방법 |
Also Published As
Publication number | Publication date |
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JP4358018B2 (ja) | 2009-11-04 |
TWI223097B (en) | 2004-11-01 |
US20040201372A1 (en) | 2004-10-14 |
US7123043B2 (en) | 2006-10-17 |
TW200420894A (en) | 2004-10-16 |
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