WO2011096583A1 - 偏光板を貼合した液晶パネルの欠陥検査方法 - Google Patents
偏光板を貼合した液晶パネルの欠陥検査方法 Download PDFInfo
- Publication number
- WO2011096583A1 WO2011096583A1 PCT/JP2011/052674 JP2011052674W WO2011096583A1 WO 2011096583 A1 WO2011096583 A1 WO 2011096583A1 JP 2011052674 W JP2011052674 W JP 2011052674W WO 2011096583 A1 WO2011096583 A1 WO 2011096583A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- liquid crystal
- crystal panel
- light
- bonded
- polarizing plate
- Prior art date
- Legal status (The legal status 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 status listed.)
- Ceased
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
-
- 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
- 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
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/95—Investigating the presence of flaws or contamination characterised by the material or shape of the object to be examined
- G01N2021/9513—Liquid crystal panels
-
- 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
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
Definitions
- the present invention relates to a method for inspecting a defect of a liquid crystal panel bonded with a polarizing plate. Specifically, the present invention relates to a method for inspecting a defect of a liquid crystal panel bonded with a polarizing plate in a state where the liquid crystal panel is not driven.
- a liquid crystal television or the like is manufactured by laminating polarizing plates on both sides of a liquid crystal panel in crossed Nicols.
- the defect inspection is performed on raw materials to be used and members obtained in main manufacturing processes, but also on a liquid crystal panel on which a polarizing plate is bonded.
- the defects of the liquid crystal panel bonded with the polarizing plate are various such as paste, foreign matters such as film chips, air entrainment, cuts, etc., which may not be detected depending on the form.
- This invention aims at providing the method of detecting the defect of the liquid crystal panel which bonded the polarizing plate without leaking in the state which does not drive a liquid crystal panel.
- the present inventor has inspected (1) irradiation with visible light and (2) near By inspecting by irradiating with infrared rays, it has been found that defects can be detected without omission, and the present invention has been completed.
- the present invention includes the following.
- a polarizing plate including irradiating light from one surface to a liquid crystal panel bonded with a polarizing plate without detecting driving of the liquid crystal panel, detecting transmitted light from the other surface, and performing signal processing A method for inspecting a defect of a bonded liquid crystal panel, and the method includes an inspection by visible light irradiation and an inspection by near infrared irradiation.
- the light source in the visible light irradiation is a metal halide lamp
- the light source in the near infrared irradiation is a halogen lamp
- the transmitted light is detected using a CCD camera.
- a periodic pattern signal corresponding to the lattice pattern derived from the black matrix is input in advance to the signal processing device, and the detected periodic signal is detected.
- FIG. 1 It is a schematic diagram of the defect inspection apparatus in this invention.
- the light transmittance when a polarizing plate is a crossed Nicol state is shown typically.
- defect inspection is usually carried out, respectively, and the polarizing plate having defects without being able to detect the defect, although bonded using the polarizing plate and the liquid crystal panel without defects.
- the liquid crystal panel may be mixed in, or foreign matter or air may be involved during bonding, so that a defect may exist in the liquid crystal panel on which the polarizing plate is bonded.
- the polarizing plate usually has a structure in which a protective film is bonded to both surfaces of a polarizing film, and a protective film and a separate film are bonded to each surface via an adhesive.
- the main defects include foreign matter such as film chips and air, adhesive lump, and scratches when the separate film is peeled off and the polarizing plate is bonded to the liquid crystal panel.
- a retardation plate, an antiglare film, and the like may be further bonded onto the polarizing plate. Usually, these are bonded in advance to form a multilayer film, which is then bonded to the liquid crystal panel. Often match. In the present invention, a liquid crystal panel to which this multilayer film is bonded is also targeted.
- FIG. 1 shows a schematic diagram of a defect inspection apparatus.
- the light source 2 is disposed below the liquid crystal panel 1 having the polarizing plate bonded thereto, the camera 3 is disposed above, and the liquid crystal panel having the polarizing plate bonded thereto is moved for inspection.
- the signal from the camera is processed by the signal processing device 4 to determine whether there is a defect.
- (1) inspection by visible light irradiation that is, a liquid crystal panel bonded with a polarizing plate is irradiated with visible light from one surface and transmitted light from the other surface without driving the liquid crystal panel. Inspecting the defect of the liquid crystal panel by detecting the signal and processing the signal, and (2) Inspection by the near infrared irradiation, that is, the liquid crystal panel is irradiated with the near infrared ray from one surface without driving the liquid crystal panel. Then, the transmitted light from the other surface is detected and the liquid crystal panel is inspected for defects by performing signal processing.
- Either the inspection by the visible light irradiation or the inspection by the near infrared irradiation may be performed first, but not at the same time.
- the light source that emits visible light include a metal halide lamp.
- Metal halide lamps mainly emit visible light of about 300 to 700 nm.
- An example of a light source that emits near infrared rays is a halogen lamp.
- a halogen lamp having a color temperature of 3500 ° K emits visible light of 300 to 780 nm and near infrared light of 780 to 2000 nm with a peak in the vicinity of about 700 nm.
- FIG. 2 schematically shows light transmittance (solid line) when the polarizing plate is in a crossed Nicol state.
- a CCD camera is usually used as a camera for detecting transmitted light.
- the CCD camera has sensitivity not only to visible light but also to near infrared rays.
- FIG. 2 schematically shows the sensitivity characteristic (broken line) of the CCD.
- a signal from the camera is processed by a signal processing device to detect a defect.
- a threshold is set for the obtained signal intensity, and a defect is determined when the threshold is exceeded.
- the same threshold value may be used, or different threshold values may be used.
- the baseline is 0, the white (brightness is higher than the baseline) side, and the black (brightness is lower than the baseline) side is represented by 32,000 gradations, 5000 gradations as threshold values, and 5000 gradations or more. In some cases, it is a defect.
- the CCD camera detects a lattice pattern derived from the black matrix.
- a periodic pattern signal corresponding to the lattice pattern is input to the signal processing apparatus in advance, and the detected periodic pattern signal is canceled to set a baseline. The gradation from this baseline is obtained.
- Inspection by visible light irradiation and inspection by near-infrared irradiation are not particularly limited, either one may be performed first, and both visible light and near-infrared light are simultaneously irradiated to different parts of the liquid crystal panel. Although inspection may be performed, it is not possible to irradiate visible light and near-infrared rays in a superimposed manner (simultaneously irradiating the same portion).
- the image sensor of the CCD camera to be used may be a line sensor or an area sensor.
- Example 1 As shown in FIG. 1, a liquid crystal panel in which a light source is disposed below a liquid crystal panel having polarizing plates bonded to both sides, a camera is disposed above, and a polarizing plate is bonded to both surfaces so that the transmission axes thereof are orthogonal to each other. Defect inspection was performed while moving. The liquid crystal panel in which the polarizing plates were bonded to both sides was turned upside down, that is, inspected from both the front side and the back side when the television was used. A metal halide lamp and a halogen lamp were used as the light source, a CCD camera was used as the camera, and an Optics image processing appearance inspection apparatus (manufactured by Kubotec Co., Ltd.) was used as the signal processing apparatus.
- a liquid crystal panel having polarizing plates bonded to both surfaces to be inspected is bonded to a liquid crystal panel for 37-inch television except for a separate film of polarizing plate Sumikaran (registered trademark) (manufactured by Sumitomo Chemical Co., Ltd.).
- a periodic pattern signal corresponding to the black pattern is input in advance, and the detected periodic pattern signal is canceled to be a base.
- the baseline is set to 0, 32,000 gradations are set for each of the white side and the black side.
- the gradation is 1000 gradations, and when a halogen lamp is used, the gradation is 5000 gradations. If it is, it was regarded as a defect.
- Table 1 shows an example in which defects are detected.
- the camera position indicates which side of the liquid crystal panel is placed facing the camera and inspected.
- the mode indicates whether the defect is detected as a black spot or a bright spot, and x indicates that neither a black spot nor a bright spot is detected.
- the size is represented by the number of pixels in the planar image of the defect.
- the defect form indicates the state of the defect viewed with a magnifying glass.
- defects that could not be detected by irradiation with visible light can be detected by irradiation with near infrared rays. Conversely, it can be detected with visible light, but it may not be detected with near-infrared light. In some cases, both can be detected. Therefore, a defect can be detected without omission by inspecting with visible light and near infrared light.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Nonlinear Science (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
- Liquid Crystal (AREA)
- Testing Of Optical Devices Or Fibers (AREA)
Abstract
Description
欠陥検査は使用する原材料、主要な製造工程で得られる部材について行われるが、偏光板を貼合した液晶パネルについても行われる。
偏光板を貼合した液晶パネルの欠陥検査方法として、液晶パネルを駆動させて行う方法もあるが、電荷をかけるドライバーの搭載などが必要であり、欠陥が検出された場合に補修、やり直しをするためにドライバーの取外しなどの手間がかかる。従って、ドライバーを搭載せずに、偏光板を貼合した液晶パネルの欠陥を、液晶パネルが駆動していない状態で、検査するのが好ましい。
[1] 偏光板を貼合した液晶パネルに、液晶パネルを駆動させない状態で、一方の面から光を照射し、他方の面からの透過光を検出し、信号処理することを含む偏光板を貼合した液晶パネルの欠陥を検査する方法であり、該方法が、可視光照射による検査と、近赤外線照射による検査とを含む方法。
[2] 可視光照射における光源がメタルハライドランプであり、近赤外線照射における光源がハロゲンランプであり、透過光の検出がCCDカメラを用いて行われる[1]に記載の方法。
[3] 透過光を検出し、信号処理する際に、信号処理装置にブラックマトリクスに由来する格子状のパターンに対応する周期的なパターンの信号を予め入力しておき、検出される該周期的なパターンの信号をキャンセルして信号のベースラインを設定することを含む[1]または[2]に記載の方法。
主な欠陥としては、セパレートフィルムを剥離し、液晶パネルに偏光板を貼合する際のフィルムの切屑などの異物や空気の巻き込み、粘着剤の塊、傷付きなどである。
なお、液晶テレビなどにおいて、偏光板の上に更に位相差板、防眩フィルムなどが貼合されることがあるが、通常、これらは予め貼合して多層フィルムとし、これを液晶パネルに貼合することが多い。本発明においては、この多層フィルムを貼合した液晶パネルについても対象とする。
可視光照射による検査と近赤外線照射による検査は、何れの検査を先に行ってもよいが、同時には行わない。
可視光を発する光源としてはメタルハライドランプが挙げられる。メタルハライドランプは主に約300~700nmの可視光を発する。近赤外線を発する光源の例としてハロゲンランプが挙げられる。例えば色温度3500°Kのハロゲンランプでは波長が約700nm近傍をピークに300~780nmの可視光及び780~2000nmの近赤外光を発する。
偏光板がクロスニコルに貼合される、即ち2枚の偏光板の透過軸が直交した状態で貼合されると、液晶パネルが駆動していない状態では可視光は殆ど透過しないが、近赤外線はかなり透過する。図2に偏光板がクロスニコル状態の時の光透過性(実線)を模式的に示す。
用いる閾値は可視光、近赤外線の何れを照射して検査する方法において、両者同一の閾値を用いてもよく、異なる閾値を用いて検査してもよい。例えば、ベースラインを0とし、白(輝度がベースラインより高い)側、黒(輝度がベースラインより低い)側をそれぞれ32000階調で表現し、5000階調を閾値とし、5000階調以上である場合に欠陥とする。
尚、用いるCCDカメラの撮像素子としてはラインセンサーであってもよいし、エリアセンサーであってもよい。
図1に示すと同様に、両面に偏光板を貼合した液晶パネルの下方に光源を、上方にカメラを配置し、両面に偏光板をその透過軸が直交するように貼合した液晶パネルを移動させながら欠陥検査を行った。両面に偏光板を貼合した液晶パネルは上下反転させ、すなわちテレビにした場合の表面側および裏面側の両方から検査した。
光源としてメタルハライドランプおよびハロゲンランプ、カメラとしてCCDカメラを用い、信号処理装置としてOptics画像処理外観検査装置(クボテック(株)製)を用いて行った。なお、一方のランプで光照射による検査を行った後、他方のランプに置き換えて他方の光照射による検査を行った。
検査対象の両面に偏光板を貼合した液晶パネルは、偏光板スミカラン(登録商標)(住友化学(株)製)のセパレートフィルムを除き、37型テレビ用液晶パネルに貼合したものである。
ベースラインを0とし、白側、黒側にそれぞれ32000階調を設定し、メタルハライドランプを用いた場合は1000階調を閾値、ハロゲンランプを用いた場合は5000階調を閾値とし、それぞれ閾値以上である場合に欠陥とした。
欠陥を検出した例を表1に示す。
したがって、可視光および近赤外線のそれぞれで検査することによって漏れなく欠陥を検出することができる。
2 光源
3 カメラ
4 信号処理装置
Claims (3)
- 偏光板を貼合した液晶パネルに、液晶パネルを駆動させない状態で、一方の面から光を照射し、他方の面からの透過光を検出し、信号処理することを含む偏光板を貼合した液晶パネルの欠陥を検査する方法であり、該方法が、可視光照射による検査と、近赤外線照射による検査とを含む方法。
- 可視光照射における光源がメタルハライドランプであり、近赤外線照射における光源がハロゲンランプであり、透過光の検出がCCDカメラを用いて行われる請求の範囲1に記載の方法。
- 透過光を検出し、信号処理する際に、信号処理装置に、ブラックマトリクスに由来する格子状のパターンに対応する周期的なパターンの信号を予め入力しておき、検出される該周期的なパターンの信号をキャンセルして信号のベースラインを設定することを含む請求の範囲1または2に記載の方法。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201180008299XA CN102741684A (zh) | 2010-02-08 | 2011-02-02 | 贴合有偏振片的液晶面板的缺陷检测方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-025195 | 2010-02-08 | ||
| JP2010025195 | 2010-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011096583A1 true WO2011096583A1 (ja) | 2011-08-11 |
Family
ID=44355574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/052674 Ceased WO2011096583A1 (ja) | 2010-02-08 | 2011-02-02 | 偏光板を貼合した液晶パネルの欠陥検査方法 |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2011180135A (ja) |
| KR (1) | KR20120115530A (ja) |
| CN (1) | CN102741684A (ja) |
| TW (1) | TW201132963A (ja) |
| WO (1) | WO2011096583A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013195387A (ja) * | 2012-03-22 | 2013-09-30 | Panasonic Corp | 表示パネルの製造方法、その検査装置及び検査方法 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI470210B (zh) * | 2012-12-17 | 2015-01-21 | Taiwan Power Testing Technology Co Ltd | 顯示裝置之光學層件之缺陷檢測方法 |
| KR101366817B1 (ko) * | 2013-07-12 | 2014-02-25 | 주식회사 에이피에스 | 디스플레이 패널의 색번짐 광학검사장치와, 이를 포함하는 광학검사시스템 및 이의 운용방법 |
| CN103439339B (zh) * | 2013-09-02 | 2015-11-25 | 深圳市华星光电技术有限公司 | 贴附有偏振片的液晶面板的缺陷检测装置及缺陷检测方法 |
| KR101697071B1 (ko) * | 2014-04-18 | 2017-01-17 | 동우 화인켐 주식회사 | 광학 필름의 결함 판별 방법 |
| CN106681033B (zh) * | 2017-01-09 | 2022-07-12 | 京东方科技集团股份有限公司 | 液晶面板的检测方法和检测装置 |
| US10481097B1 (en) | 2018-10-01 | 2019-11-19 | Guardian Glass, LLC | Method and system for detecting inclusions in float glass based on spectral reflectance analysis |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003262843A (ja) * | 2002-03-11 | 2003-09-19 | Seiko Epson Corp | 液晶パネル検査方法及び装置 |
| JP2004101194A (ja) * | 2002-09-04 | 2004-04-02 | Lasertec Corp | 光学装置並びにそれを用いた画像測定装置及び検査装置 |
| JP2005265503A (ja) * | 2004-03-17 | 2005-09-29 | Seiko Epson Corp | ディスプレイの検査方法及びディスプレイの検査装置 |
| JP2006078317A (ja) * | 2004-09-09 | 2006-03-23 | Seiko Epson Corp | 被検査体の検査方法及びその装置 |
| JP2008107100A (ja) * | 2006-10-23 | 2008-05-08 | Sharp Corp | 液晶パネルの検査装置、及び液晶パネルの検査方法 |
| JP2008175768A (ja) * | 2007-01-22 | 2008-07-31 | Seiko Epson Corp | 表示パネルの欠陥検査装置および欠陥検査方法 |
| JP2009047469A (ja) * | 2007-08-15 | 2009-03-05 | Toppan Printing Co Ltd | 回折像を用いたカラーフィルターの検査方法および装置 |
| JP2009250893A (ja) * | 2008-04-09 | 2009-10-29 | Nitto Denko Corp | 光学表示ユニットの検査方法およびその検査方法を用いた光学表示ユニットの製造方法 |
| JP2010266284A (ja) * | 2009-05-13 | 2010-11-25 | Micronics Japan Co Ltd | 非点灯検査装置 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007256106A (ja) * | 2006-03-23 | 2007-10-04 | Sharp Corp | 表示パネル検査装置及びそれを用いた表示パネル検査方法 |
| JP5112748B2 (ja) * | 2007-05-30 | 2013-01-09 | 株式会社日本マイクロニクス | 液晶パネル検査方法及び装置 |
-
2011
- 2011-02-01 TW TW100104008A patent/TW201132963A/zh unknown
- 2011-02-02 WO PCT/JP2011/052674 patent/WO2011096583A1/ja not_active Ceased
- 2011-02-02 KR KR1020127020280A patent/KR20120115530A/ko not_active Withdrawn
- 2011-02-02 CN CN201180008299XA patent/CN102741684A/zh active Pending
- 2011-02-08 JP JP2011024657A patent/JP2011180135A/ja not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003262843A (ja) * | 2002-03-11 | 2003-09-19 | Seiko Epson Corp | 液晶パネル検査方法及び装置 |
| JP2004101194A (ja) * | 2002-09-04 | 2004-04-02 | Lasertec Corp | 光学装置並びにそれを用いた画像測定装置及び検査装置 |
| JP2005265503A (ja) * | 2004-03-17 | 2005-09-29 | Seiko Epson Corp | ディスプレイの検査方法及びディスプレイの検査装置 |
| JP2006078317A (ja) * | 2004-09-09 | 2006-03-23 | Seiko Epson Corp | 被検査体の検査方法及びその装置 |
| JP2008107100A (ja) * | 2006-10-23 | 2008-05-08 | Sharp Corp | 液晶パネルの検査装置、及び液晶パネルの検査方法 |
| JP2008175768A (ja) * | 2007-01-22 | 2008-07-31 | Seiko Epson Corp | 表示パネルの欠陥検査装置および欠陥検査方法 |
| JP2009047469A (ja) * | 2007-08-15 | 2009-03-05 | Toppan Printing Co Ltd | 回折像を用いたカラーフィルターの検査方法および装置 |
| JP2009250893A (ja) * | 2008-04-09 | 2009-10-29 | Nitto Denko Corp | 光学表示ユニットの検査方法およびその検査方法を用いた光学表示ユニットの製造方法 |
| JP2010266284A (ja) * | 2009-05-13 | 2010-11-25 | Micronics Japan Co Ltd | 非点灯検査装置 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013195387A (ja) * | 2012-03-22 | 2013-09-30 | Panasonic Corp | 表示パネルの製造方法、その検査装置及び検査方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102741684A (zh) | 2012-10-17 |
| KR20120115530A (ko) | 2012-10-18 |
| TW201132963A (en) | 2011-10-01 |
| JP2011180135A (ja) | 2011-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2011096583A1 (ja) | 偏光板を貼合した液晶パネルの欠陥検査方法 | |
| JP5556212B2 (ja) | 偏光板を貼合した液晶パネルの欠陥検査方法 | |
| CN101520558B (zh) | 用于液晶显示器的检查设备及使用该设备的检查方法 | |
| CN101750770B (zh) | 检测液晶显示设备的装置和方法 | |
| CN203950092U (zh) | 液晶显示面板的检查装置 | |
| JP2015017981A (ja) | 偏光板の検査方法 | |
| TWI502186B (zh) | A bright spot detection device for filtering foreign matter noise and its method | |
| TW200639492A (en) | Visual inspection apparatus and method of inspecting display panel using the visual inspection apparatus | |
| JP2016081062A (ja) | シート状製品の検査システム、シート状製品の検査方法及びそのような検査で使用するための偏光板(systemandmethodforinspectionofsheet−shapedproductandpolarizingplateforuseinsuchinspection) | |
| JP2005009919A (ja) | 保護膜付き偏光板の検査装置および検査方法 | |
| WO2014029144A1 (zh) | 液晶显示器中玻璃基板的检测方法及检测装置 | |
| KR20150094948A (ko) | 광학 검사 장치 및 광학 검사 방법 | |
| KR102037050B1 (ko) | 표시장치용 비전검사 시스템 및 이의 검사방법 | |
| JP2005241586A (ja) | 光学フィルムの検査装置および光学フィルムの検査方法 | |
| JP2008216810A (ja) | 液晶パネル検査装置及び液晶パネル検査方法 | |
| KR102168001B1 (ko) | 투명 제품 검사용 lcd 디스플레이 조명 및 이를 구비한 투명 제품 검사 장치 | |
| CN201562095U (zh) | 光学影像检测设备 | |
| JP2008107100A (ja) | 液晶パネルの検査装置、及び液晶パネルの検査方法 | |
| CN101435930B (zh) | 检测方法 | |
| JP4278246B2 (ja) | 光学透明フィルムの検査方法 | |
| JP2011106938A (ja) | 偏光板の検査方法 | |
| WO2018131489A1 (ja) | パネル検査システム | |
| TWM283176U (en) | Device for inspecting glass defects | |
| JP2003130814A (ja) | 表示パネルの外観検査方法および外観検査装置 | |
| CN206850862U (zh) | 一种手机中板漏攻牙检测机构 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 201180008299.X Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11739929 Country of ref document: EP Kind code of ref document: A1 |
|
| ENP | Entry into the national phase |
Ref document number: 20127020280 Country of ref document: KR Kind code of ref document: A |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| 122 | Ep: pct application non-entry in european phase |
Ref document number: 11739929 Country of ref document: EP Kind code of ref document: A1 |
