JP2016038565A - Optical film sticking position measuring device - Google Patents
Optical film sticking position measuring device Download PDFInfo
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- JP2016038565A JP2016038565A JP2015004179A JP2015004179A JP2016038565A JP 2016038565 A JP2016038565 A JP 2016038565A JP 2015004179 A JP2015004179 A JP 2015004179A JP 2015004179 A JP2015004179 A JP 2015004179A JP 2016038565 A JP2016038565 A JP 2016038565A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
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- 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
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- 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
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- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Mathematical Physics (AREA)
Abstract
Description
本発明は光学フィルム貼付位置測定装置に関する。 The present invention relates to an optical film sticking position measuring apparatus.
ディスプレイを製造する工程において、光学表示装置の表示機能を実現するため、光学素子に光学フィルムを貼付ける必要がある。この場合、光学フィルムの貼付精度は、製品となった光学表示装置の表示品質に密に関連している。 In the process of manufacturing the display, it is necessary to attach an optical film to the optical element in order to realize the display function of the optical display device. In this case, the accuracy of applying the optical film is closely related to the display quality of the optical display device that is the product.
そして、光学表示装置における光学フィルムの貼付ズレ量を検出する技術は、従来より知られている。例えば、特許文献１には、偏光板を液晶パネルに貼り付けた後に、図１に示すように、液晶パネル１の四隅のいずれか又は複数のエッジ部付近を液晶パネル１側面に対して垂直となる方向からＣＣＤカメラ２８，２９により撮影し、撮影された画像中の液晶パネル１端部から偏光板３端部までの距離を画像処理により測定し、良品であるか否かを判断する貼付精度検査方法が開示されている。 And the technique which detects the sticking | shift amount of the optical film in an optical display apparatus is conventionally known. For example, in Patent Document 1, after attaching a polarizing plate to a liquid crystal panel, as shown in FIG. 1, any one of the four corners of the liquid crystal panel 1 or a plurality of edge portions is perpendicular to the side surface of the liquid crystal panel 1. The image is taken by the CCD cameras 28 and 29 from a certain direction, and the distance from the liquid crystal panel 1 end to the end of the polarizing plate 3 in the taken image is measured by image processing to determine whether it is a non-defective product An inspection method is disclosed.
また、特許文献２には、液晶パネルに貼り合わせた偏光板の四隅のすべてをカメラで撮影し、得られた画像データを用いて偏光板の貼付ズレ量などを算出する方法が開示される。 Patent Document 2 discloses a method of photographing all four corners of a polarizing plate bonded to a liquid crystal panel with a camera and calculating the amount of sticking deviation of the polarizing plate using the obtained image data.
しかし、特許文献１に開示された偏光板の貼付ズレ量の検出方法では、液晶パネルの側面に対して垂直な方向から液晶パネルの四隅を撮影する。しかし、液晶パネル及び偏光板は、その厚みが小さいため、この測定方法自体の精度が確保し難い。また、特許文献２の方法によれば、ＣＣＤカメラを利用して液晶パネルの四隅を撮影するが、液晶パネルと偏光板との境界がはっきりと写らず、高精度な測定ができない問題点がある。 However, in the method for detecting the amount of sticking deviation of the polarizing plate disclosed in Patent Document 1, the four corners of the liquid crystal panel are photographed from the direction perpendicular to the side surface of the liquid crystal panel. However, since the thickness of the liquid crystal panel and the polarizing plate is small, it is difficult to ensure the accuracy of the measuring method itself. In addition, according to the method of Patent Document 2, the four corners of the liquid crystal panel are photographed using a CCD camera, but there is a problem that the boundary between the liquid crystal panel and the polarizing plate is not clearly visible and high-precision measurement cannot be performed. .
本発明は、上記問題点を解決するためになされたものであり、光学表示装置に対して画像データを撮ることにより簡単で高精度に光学フィルムの貼付位置を測定できる光学フィルム貼付位置測定装置を提供することを解決すべき課題とする。 The present invention has been made to solve the above-described problems, and provides an optical film sticking position measuring apparatus that can measure the sticking position of an optical film with high accuracy by taking image data with respect to an optical display device. Providing is a problem to be solved
本発明の光学フィルム貼付位置測定装置は、光学素子に光学フィルムが貼り付けられた光学表示装置に対して光学フィルムの貼付位置を測定するものであり、フレームと、該フレームの一端側に設けられ、赤外線を出射する赤外線光源と、該フレームの他端側に設けられ、前記赤外線が入射するように設けられる撮影手段と、前記赤外線光源と前記撮影手段との間に設けられるリング光源と、を備え、前記赤外線光源と前記リング光源は、光軸がほぼ同軸であって、光の出射方向が対向し、その間に前記光学表示装置が通過できる空間が設けられていることを特徴とする。 The optical film sticking position measuring device of the present invention measures the sticking position of the optical film with respect to the optical display device in which the optical film is stuck to the optical element, and is provided on the frame and one end side of the frame. An infrared light source that emits infrared light, an imaging unit that is provided on the other end side of the frame and that is configured to receive the infrared ray, and a ring light source that is provided between the infrared light source and the imaging unit. The infrared light source and the ring light source are characterized in that the optical axes are substantially coaxial, the light emission directions face each other, and a space through which the optical display device can pass is provided.
この光学フィルム貼付位置測定装置により、赤外線光源とリング光源を併用して、その間に通過する光学表示装置の画像を撮ることができ、光学フィルムの位置が正確に測ることができる。 With this optical film sticking position measuring device, an infrared light source and a ring light source can be used together to take an image of the optical display device passing between them, and the position of the optical film can be accurately measured.
また、この光学フィルム貼付位置測定装置は、前記赤外線光源から出射した赤外線が前記光学表示装置を透過し、その透過光により光学素子内部におけるブラックマトリクスの端部と前記光学フィルムの外縁との距離を撮影し、前記リング光源から出射した光が前記光学表示装置により反射され、その反射光により、光学素子の外縁と前記光学フィルムの外縁との距離を撮影するように構成してもよい。 Further, in this optical film pasting position measuring device, the infrared light emitted from the infrared light source is transmitted through the optical display device, and the distance between the edge of the black matrix inside the optical element and the outer edge of the optical film is determined by the transmitted light. The light emitted from the ring light source is reflected by the optical display device, and the reflected light may be used to photograph the distance between the outer edge of the optical element and the outer edge of the optical film.
これにより、光学素子におけるブラックマトリクスの端部が基準として光学フィルムの位置を測定するため、より正確に光学フィルムの位置を測定することができる。 Thereby, since the edge part of the black matrix in an optical element measures the position of an optical film on the basis, the position of an optical film can be measured more correctly.
また、前記赤外線光源と前記光学表示装置の間に拡散板をさらに備えてもよい。これにより、出射された赤外線が均一に拡散され、画像の質が一層向上できるようになる。 Further, a diffusion plate may be further provided between the infrared light source and the optical display device. Thereby, the emitted infrared rays are uniformly diffused, and the image quality can be further improved.
また、前記撮影手段は、撮影された画像データを画像処理装置に送信するように構成される。これにより、透過光により撮影した画像と反射光により撮影した画像とが画像処理装置で偏光フィルムの貼付位置が２重に確認できるため、より正確に光学フィルムの貼付位置を測定できる。 The photographing unit is configured to transmit the photographed image data to the image processing apparatus. Thereby, since the image filmed by the transmitted light and the image imaged by the reflected light can be double confirmed by the image processing apparatus, the position of the optical film can be measured more accurately.
本発明は、また光学フィルムを光学素子の両面に貼り付けて光学表示装置を製造する光学表示装置製造ラインを提供する。この製造ラインは、前記光学素子の一面に第１光学フィルムを貼り付ける第１光学フィルム貼付装置と、前記光学素子の他面に第２光学フィルムを貼り付ける第２光学フィルム貼付装置と、を順次備える。前記第１光学フィルム貼付装置と前記第２光学フィルム貼付装置との間に、本発明にかかる光学フィルム貼付位置測定装置が配置され、前記第１光学フィルムの貼付位置を測定し、前記第２光学フィルム貼付装置の下流側に、本発明にかかる光学フィルム貼付位置測定装置が配置され、前記第２光学フィルムの貼付位置を測定する。前記光学フィルム貼付位置測定装置は、いずれの配置箇所において、少なくとも前記光学表示装置の一隅に配置される。
また、測定の正確性を向上するため、前記光学フィルム貼付位置測定装置は、前記撮影手段が前記光学表示装置に対して同一側になるように光学表示装置の四隅に配置されることが好ましい。
The present invention also provides an optical display device production line for producing an optical display device by attaching an optical film to both surfaces of an optical element. The production line sequentially includes a first optical film sticking device for sticking a first optical film on one surface of the optical element, and a second optical film sticking device for sticking a second optical film on the other surface of the optical element. Prepare. An optical film sticking position measuring device according to the present invention is arranged between the first optical film sticking device and the second optical film sticking device, and measures the sticking position of the first optical film to measure the second optical film. An optical film sticking position measuring device according to the present invention is arranged downstream of the film sticking apparatus, and measures the sticking position of the second optical film. The optical film sticking position measuring device is arranged at least at one corner of the optical display device in any arrangement place.
In order to improve measurement accuracy, it is preferable that the optical film sticking position measuring device is arranged at four corners of the optical display device so that the photographing unit is on the same side with respect to the optical display device.
これにより、光学フィルムの貼付が完成するごとに、その光学フィルムの貼付位置をすぐに測定し、不良であると判断すれば、直ちに処理できるため、歩留まりを向上できる。 As a result, every time the optical film is attached, the optical film attachment position is immediately measured, and if it is determined to be defective, it can be processed immediately, so the yield can be improved.
また、前記の製造ラインにおいて、前記第２光学フィルム貼付装置の下流側にのみ、本発明にかかる光学フィルム貼付位置測定装置が配置され、前記第１光学フィルムと前記第２光学フィルムの貼付位置を同時に測定するように構成することもできる。前記光学フィルム貼付位置測定装置は、少なくとも前記光学表示装置の隣接する二隅に配置され、隣接に配置される光学フィルム貼付位置測定装置の前記撮像手段は、前記光学表示装置に対して異なる向きになるように配置される。
また、測定の正確性を向上するため、前記光学フィルム貼付位置測定装置は、前記光学表示装置の四隅に設けられ、対角にある光学フィルム貼付位置測定装置における撮影手段が前記光学表示装置の同一側に位置し、隣接する光学フィルム貼付位置測定装置における撮影手段が前記光学表示装置の異なる側に位置するように配置することが好ましい。
In the production line, the optical film sticking position measuring device according to the present invention is disposed only on the downstream side of the second optical film sticking device, and the sticking positions of the first optical film and the second optical film are determined. It can also be configured to measure simultaneously. The optical film sticking position measuring device is disposed at least at two adjacent corners of the optical display device, and the imaging means of the optical film sticking position measuring device disposed adjacent to each other is in a different direction with respect to the optical display device. It is arranged to become.
In order to improve measurement accuracy, the optical film sticking position measuring device is provided at the four corners of the optical display device, and the photographing means in the diagonal optical film sticking position measuring device is the same as the optical display device. It is preferable that the photographing means in the adjacent optical film pasting position measuring device is located on the side of the optical display device and located on a different side.
これにより、光学素子の両面に光学フィルムの貼付が完成した後に、両面の光学フィルムの貼付位置を一括に測定することができ、装置が簡素になり、生産率も向上できる。 Thereby, after the optical film is attached to both surfaces of the optical element, the attachment positions of the optical films on both surfaces can be collectively measured, the apparatus is simplified, and the production rate can be improved.
前記の製造ラインにおいて、前記第２光学フィルム貼付装置の下流側に、第１光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置と、第２光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置とが、それぞれ二箇所に順次配置され、前記光学フィルム貼付位置測定装置は、本発明の光学フィルム貼付位置測定装置であり、第１光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置における撮影手段が前記光学表示装置に対して一側に位置し、前記第２光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置における撮影手段が前記光学表示装置の反対側に位置するように構成する。
また、測定の正確性を向上するため、第１光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置と、第２光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置は、前記光学表示装置の四隅に配置されることが好ましい。
In the production line, on the downstream side of the second optical film sticking device, an optical film sticking position measuring device for measuring the sticking position of the first optical film, and an optical film sticking position for measuring the sticking position of the second optical film. Measuring devices are sequentially arranged at two locations, and the optical film sticking position measuring device is the optical film sticking position measuring device of the present invention, and measures the sticking position of the first optical film. The photographing means in the optical display device is located on one side with respect to the optical display device, and the photographing means in the optical film sticking position measuring device for measuring the sticking position of the second optical film is located on the opposite side of the optical display device. Configure.
In order to improve measurement accuracy, the optical film sticking position measuring device for measuring the sticking position of the first optical film and the optical film sticking position measuring device for measuring the sticking position of the second optical film include the optical display. It is preferable to arrange at the four corners of the device.
以下、本発明の具体的な実施形態を詳しく説明する。なお、以下の実施形態においては、一例として、液晶セルに光学フィルムを貼付けて液晶パネルを製造する場合について説明する。 Hereinafter, specific embodiments of the present invention will be described in detail. In the following embodiments, a case where a liquid crystal panel is manufactured by attaching an optical film to a liquid crystal cell will be described as an example.
本発明にかかる光学フィルム貼付位置測定装置１０１は、光学フィルムを液晶セルに貼付けて液晶パネルを製造する製造ラインに適用され、光学フィルムを液晶セルに貼りつける精度を検査する装置である。 The optical film sticking position measuring apparatus 101 according to the present invention is an apparatus that is applied to a production line for sticking an optical film to a liquid crystal cell to manufacture a liquid crystal panel, and inspects the accuracy of sticking the optical film to the liquid crystal cell.
次に、液晶セルＣ１の両面にそれぞれ偏光フィルムＦ１を貼り付ける例として、本発明の光学フィルム貼付位置測定装置１０１の構成及び動作を説明する。 Next, as an example of attaching the polarizing film F1 to both surfaces of the liquid crystal cell C1, the configuration and operation of the optical film attaching position measuring apparatus 101 of the present invention will be described.
なお、本発明では、二枚の透明基板の間に液晶材料が充填されてセル化されたものは液晶セルと呼ばれ、この液晶セルの片面または両面に光学フィルムが貼り付けられてなったものは液晶パネルと呼ばれる。 In the present invention, a liquid crystal cell filled with a liquid crystal material between two transparent substrates is called a liquid crystal cell, and an optical film is attached to one or both sides of the liquid crystal cell. Is called a liquid crystal panel.
この光学フィルム貼付位置測定装置１０１は、図２及び図３に示すように、Ｌ型フレーム６の一端側（基部）に設けられた赤外線光源１と、該フレーム６の他端側（アーム部の端部側）に設けられた撮影手段３と、赤外線光源１と撮影手段３の間において、このフレーム６のアーム部の途中に設けられたリング光源２とを備える。撮影手段３は、赤外線光源１からの赤外線が入射できるように赤外線光源１の光路に設けられ、リング光源２は、赤外線光源１と光軸がほぼ同一であるが、光の出射方向が赤外線光源１と反対になるように配置される。また、赤外線光源１とリング光源２との間に、液晶パネルＰ１が通過できる空間が開いている。
ここで、フレームについて、Ｌ型フレームの例を挙げたが、フレームは、この形状に限らない。撮影装置及び光源を取り付けることができれば、他の形でもよい。
As shown in FIGS. 2 and 3, the optical film sticking position measuring device 101 includes an infrared light source 1 provided on one end side (base) of the L-shaped frame 6 and the other end side (arm portion of the arm portion) of the frame 6. The photographing means 3 provided on the end side) and the ring light source 2 provided in the middle of the arm portion of the frame 6 between the infrared light source 1 and the photographing means 3 are provided. The imaging means 3 is provided in the optical path of the infrared light source 1 so that the infrared light from the infrared light source 1 can enter. The ring light source 2 has substantially the same optical axis as the infrared light source 1, but the light emission direction is the infrared light source. 1 is arranged to be opposite to 1. Further, a space through which the liquid crystal panel P <b> 1 can pass is opened between the infrared light source 1 and the ring light source 2.
Here, an example of an L-shaped frame has been given for the frame, but the frame is not limited to this shape. Other shapes may be used as long as the photographing device and the light source can be attached.
また、必要に応じて、赤外線光源１とリング光源２との間に、拡散板４が設けられても良い。その場合、液晶パネルＰ１における偏光フィルムＦ１の貼付位置を測定するとき、赤外線光源１殻の赤外線が拡散板４を通して液晶パネルＰ１に投射することになる。 In addition, a diffusion plate 4 may be provided between the infrared light source 1 and the ring light source 2 as necessary. In that case, when the sticking position of the polarizing film F1 in the liquid crystal panel P1 is measured, the infrared light from the shell of the infrared light source 1 is projected onto the liquid crystal panel P1 through the diffusion plate 4.
また、撮影手段３は、カメラ３１により構成される。また、必要に応じて、カメラ３１にさらにレンズ３２を取り付けることもできる。カメラ３１は、赤外線光源１からの赤外線で撮影できるものであれば、その種類は限られない。
また、赤外線の波長は、必要に応じて適宜調整できるが、７８０〜１０００ｎｍの範囲内にあることが好ましい。
The photographing means 3 includes a camera 31. In addition, a lens 32 can be further attached to the camera 31 as necessary. The type of the camera 31 is not limited as long as the camera 31 can shoot with infrared rays from the infrared light source 1.
Moreover, although the wavelength of infrared rays can be suitably adjusted as needed, it is preferable that it exists in the range of 780-1000 nm.
次に、図面を参照しながら、本発明の光学フィルム貼付位置測定装置１０１の動作を説明する。 Next, the operation of the optical film sticking position measuring apparatus 101 of the present invention will be described with reference to the drawings.
この光学フィルム貼付位置測定装置１０１は、液晶パネルの製造ラインにおける所定の測定位置に設置される。光学フィルム貼付位置測定装置１０１は、液晶パネルＰ１が測定位置にあるとき、測定対象となる液晶パネルＰ１の隅部に位置し、液晶パネルＰ１が赤外線光源１（または拡散板４）とリング光源２の間にあるように配置される。 The optical film sticking position measuring device 101 is installed at a predetermined measuring position in a liquid crystal panel production line. When the liquid crystal panel P1 is at the measurement position, the optical film sticking position measuring device 101 is located at the corner of the liquid crystal panel P1 to be measured, and the liquid crystal panel P1 is the infrared light source 1 (or diffuser plate 4) and the ring light source 2. It is arranged to be between.
測定するとき、まず赤外線光源１を点灯し、その赤外線が液晶パネルを透過して、カメラ３１によりその透過光による画像を撮影する。さらに、リング光源２を点灯し、その光が液晶パネルにより反射され、カメラ３１によりその反射光による画像を撮影する。 When measuring, first, the infrared light source 1 is turned on, the infrared light is transmitted through the liquid crystal panel, and the camera 31 captures an image of the transmitted light. Further, the ring light source 2 is turned on, the light is reflected by the liquid crystal panel, and the camera 31 captures an image of the reflected light.
図４に示すように、液晶パネルＰ１における液晶セルＣ１の片面には偏光フィルムが貼り付けられる。また、液晶セルＣ１は、その表示領域の透明ガラス基板の間に液晶材料が充填され、さらにその表示領域の外側の透明ガラス基板の間にブラックマトリクスが設けられた構成である。赤外線光源１からの赤外線が液晶パネルの端部を通過する際に、それぞれ表示領域部、透明ガラス基板部、ブラックマトリクスＢＭ及び偏光フィルムの透過率の差によって、撮られた画像には、ブラックマトリクスＢＭの縁部と偏光フィルムの縁部がはっきりと写される。また、リング光源から出射した光は可視光であり、液晶セル又は偏光フィルムの表面で反射される。この反射光によって液晶パネル上の凹凸が光り、この反射光で撮られた画像には、液晶セルＣ１の縁部と偏光フィルムＦ１の縁部がはっきりと写される。 As shown in FIG. 4, a polarizing film is attached to one side of the liquid crystal cell C1 in the liquid crystal panel P1. The liquid crystal cell C1 has a configuration in which a liquid crystal material is filled between the transparent glass substrates in the display region, and a black matrix is provided between the transparent glass substrates outside the display region. When infrared rays from the infrared light source 1 pass through the edge of the liquid crystal panel, the black matrix is included in the captured image due to the difference in transmittance between the display area portion, the transparent glass substrate portion, the black matrix BM, and the polarizing film, respectively. The edge of the BM and the edge of the polarizing film are clearly copied. The light emitted from the ring light source is visible light and is reflected by the surface of the liquid crystal cell or the polarizing film. The unevenness on the liquid crystal panel shines by this reflected light, and the edge of the liquid crystal cell C1 and the edge of the polarizing film F1 are clearly copied in the image taken with this reflected light.
赤外線光源１から照射され、液晶パネルＰ１を透過した透過光がリング光源２の中央の孔を通過してカメラ３１に到達する。カメラ３１はこの透過光で映る画像を撮影し、液晶セルＣ１におけるブラックマトリクスＢＭの形と液晶セルＣ１に貼り付けられた偏光フィルムＦ１の形が映られた画像（図５ａ）が得られる。 The transmitted light irradiated from the infrared light source 1 and transmitted through the liquid crystal panel P 1 passes through the central hole of the ring light source 2 and reaches the camera 31. The camera 31 captures an image reflected by the transmitted light, and an image (FIG. 5a) is obtained in which the shape of the black matrix BM in the liquid crystal cell C1 and the shape of the polarizing film F1 attached to the liquid crystal cell C1 are reflected.
次に、この赤外線光源１を消灯し、液晶パネルＰ１の上方に設けられたリング光源２を点灯すると、このリング光源２からの光は液晶パネルＰ１に到達し、液晶パネルＰ１により反射され、リング光源２の中央にある孔を通過してカメラ３１に到達する。そして、カメラ３１の作動により、液晶セルＣ１と偏光フィルムＦ１の画像（図５ｂ）が撮像される。 Next, when the infrared light source 1 is turned off and the ring light source 2 provided above the liquid crystal panel P1 is turned on, the light from the ring light source 2 reaches the liquid crystal panel P1, is reflected by the liquid crystal panel P1, and It passes through the hole in the center of the light source 2 and reaches the camera 31. And by the action | operation of the camera 31, the image (FIG. 5b) of the liquid crystal cell C1 and the polarizing film F1 is imaged.
カメラ３１により撮像された透過光による画像と反射光による画像がそれぞれ画像処理装置５に送信され、図５ａのような（１）ブラックマトリクスＢＭ端部からの偏光フィルム端部の位置と、図５ｂのような（２）液晶セルの外端からの偏光フィルム端部の位置という偏光フィルムの貼付位置の画像が二つ得られる。 An image by transmitted light and an image by reflected light captured by the camera 31 are respectively transmitted to the image processing device 5, and (1) the position of the end of the polarizing film from the end of the black matrix BM as shown in FIG. (2) Two images of the polarizing film sticking position of the polarizing film edge from the outer edge of the liquid crystal cell are obtained.
画像データは、さらに測定装置に送信され、そこで偏光フィルムの貼付位置が測定される。即ち、まず、図５ａに示すように、液晶パネルＰ１の縦方向と幅方向について、液晶セル内部におけるブラックマトリクスの内縁と偏光フィルムの外縁との距離Ｌ１をそれぞれ測定する。次に、図５ｂに示すように、同じく液晶パネルＰ１の縦方向と幅方向について、偏光フィルムＦ１の外縁と液晶セルＣ１の外縁との距離Ｌ2をそれぞれ測定する。 The image data is further transmitted to a measuring device, where the position of the polarizing film is measured. That is, first, as shown in FIG. 5a, the distance L1 between the inner edge of the black matrix and the outer edge of the polarizing film in the liquid crystal cell is measured in the longitudinal direction and the width direction of the liquid crystal panel P1, respectively. Next, as shown in FIG. 5b, the distance L2 between the outer edge of the polarizing film F1 and the outer edge of the liquid crystal cell C1 is measured for the longitudinal direction and the width direction of the liquid crystal panel P1.
測定された距離Ｌ１と距離Ｌ2をそれぞれ所定の基準距離範囲と比較し、所定の基準距離範囲内であれば、偏光フィルムＦ１が所定の位置に貼り付けられたと判断される。一方、距離Ｌ１と距離Ｌ２が基準距離範囲から外れれば、偏光フィルムＦ１がずれた状態にあって液晶パネルが不良品であると判断される。 The measured distance L1 and distance L2 are respectively compared with a predetermined reference distance range, and if it is within the predetermined reference distance range, it is determined that the polarizing film F1 has been attached to a predetermined position. On the other hand, if the distance L1 and the distance L2 are out of the reference distance range, it is determined that the polarizing film F1 is shifted and the liquid crystal panel is defective.
赤外線光源１とリング光源２とを併用して液晶パネルの隅部を二回撮影し、赤外線透過照明での透過撮像で液晶セル内部のブラックマトリクスの端部と偏光フィルム端部との距離Ｌ１と、リング照明での反射撮像で液晶セル端部と偏光フィルム端部との距離Ｌ２との二つの測定結果から偏光フィルムの貼付位置を特定するため、液晶パネルにおける偏光フィルムの貼付位置が２重に確認され、正確に偏光フィルムの位置を測定することができる。また、撮像された画像において液晶セルにおけるブラックマトリクスの端部を測定の基準とするため、液晶セルの外縁の製造によるバラつきの影響を抑制でき、偏光フィルムの貼付位置の測定が一層正確に行われる。 The infrared light source 1 and the ring light source 2 are used in combination to photograph the corner of the liquid crystal panel twice, and the distance L1 between the end of the black matrix inside the liquid crystal cell and the end of the polarizing film is obtained by transmission imaging with infrared transmission illumination. In order to specify the polarizing film sticking position from the two measurement results of the distance L2 between the liquid crystal cell edge and the polarizing film edge by reflection imaging with ring illumination, the polarizing film sticking position on the liquid crystal panel is doubled. It is confirmed and the position of the polarizing film can be measured accurately. In addition, since the edge of the black matrix in the liquid crystal cell is used as a measurement reference in the captured image, the influence of variation due to the manufacture of the outer edge of the liquid crystal cell can be suppressed, and the measurement of the position where the polarizing film is applied is performed more accurately .
本発明の光学フィルム貼付位置測定装置１０１は、液晶セルの両面に光学フィルムを貼付けて液晶パネルを製造する製造ラインに適用できる。 The optical film sticking position measuring apparatus 101 of the present invention can be applied to a production line for manufacturing a liquid crystal panel by sticking an optical film on both surfaces of a liquid crystal cell.
この液晶パネル製造ラインは、図６に示すように、第１光学フィルムが、第１光学フィルム供給装置ＦＳ１から第１光学フィルム貼付装置ＰＳ１へ供給され、そこで搬送されてきた液晶セルの片面に貼り付けられる。また、第２光学フィルムが、第２光学フィルム供給装置ＦＳ２から第２光学フィルム貼付装置ＰＳ２へ供給され、そこで搬送されてきた片面に第１光学フィルムが貼り付けられた液晶パネルの他面に貼り付けられる。両面に光学フィルムが貼り付けられた液晶パネルはさらに下流工程に搬送される。 In this liquid crystal panel production line, as shown in FIG. 6, the first optical film is supplied from the first optical film supply device FS1 to the first optical film application device PS1, and applied to one side of the liquid crystal cell that has been conveyed there. Attached. In addition, the second optical film is supplied from the second optical film supply device FS2 to the second optical film application device PS2, and is then attached to the other surface of the liquid crystal panel on which the first optical film is attached on one side. Attached. The liquid crystal panel having the optical films attached on both sides is further conveyed to a downstream process.
このような生産ラインにおいて、本発明の光学フィルム貼付位置測定装置１０１が、第１光学フィルム貼付装置PS1の下流側と、第２光学フィルム貼付装置の下流側ＰＳ２にそれぞれ配置される。この場合、光学フィルム貼付位置測定装置１０１により、液晶パネルＰ１の片面に貼り付けられた光学フィルムの位置を測定するため、光学フィルム貼付位置測定装置１０１は、図７に示すように、液晶パネルＰ１に対して同一側であって液晶パネルＰ１の四隅に配置される。即ち、液晶パネルＰ１の四隅に位置する光学フィルム貼付位置測定装置１０１は、すべて同じ向きになっている。具体的に述べると、液晶パネルＰ１に対して、カメラ３１は同じ側に位置する。この四つの光学フィルム貼付位置測定装置１０１により、液晶パネルＰ１の片面の４辺における光学フィルムＦ１の貼付位置を測定する。
この場合、より正確に光学フィルムの貼付位置を測定するため、この実施例には液晶パネルの四隅に光学フィルム貼付位置測定装置１０１が配置されるが、光学フィルム貼付位置測定装置１０１は、少なくとも液晶パネルの一隅に配置すればよい。
In such a production line, the optical film sticking position measuring device 101 of the present invention is disposed on the downstream side of the first optical film sticking device PS1 and on the downstream side PS2 of the second optical film sticking device. In this case, in order to measure the position of the optical film stuck on one side of the liquid crystal panel P1 by the optical film sticking position measuring device 101, the optical film sticking position measuring device 101, as shown in FIG. Are arranged on the same side with respect to the four corners of the liquid crystal panel P1. That is, the optical film sticking position measuring devices 101 located at the four corners of the liquid crystal panel P1 are all in the same direction. Specifically, the camera 31 is located on the same side with respect to the liquid crystal panel P1. With these four optical film sticking position measuring devices 101, the sticking positions of the optical film F1 on the four sides of one side of the liquid crystal panel P1 are measured.
In this case, in order to measure the application position of the optical film more accurately, in this embodiment, the optical film application position measuring device 101 is arranged at the four corners of the liquid crystal panel. What is necessary is just to arrange | position in the corner of a panel.
実施例３は、光学フィルム貼付位置測定装置１０１が製造ラインの１箇所のみに配置される点だけ、実施例２と異なる。実施例２と同じ構成について、その説明を省略する。 The third embodiment is different from the second embodiment only in that the optical film sticking position measuring device 101 is arranged at only one place on the production line. The description of the same configuration as that of the second embodiment is omitted.
実施例３に係る液晶パネル製造ラインにおいては、図８に示すように、光学フィルム貼付位置測定装置１０１は、第２光学フィルム貼付装置PS2の下流側にのみ配置される。即ち、実施例３において、液晶セルの両面に光学フィルムの貼付が完成した後、両面の光学フィルムの貼付位置を同時に測定する。 In the liquid crystal panel production line according to Example 3, as shown in FIG. 8, the optical film sticking position measuring device 101 is disposed only on the downstream side of the second optical film sticking device PS2. That is, in Example 3, after the application of the optical film to both sides of the liquid crystal cell is completed, the attachment positions of the optical films on both sides are measured simultaneously.
その場合、光学フィルム貼付け位置測定装置１０１は、図９に示すように、液晶パネルＰ１の四隅に配置されるが、対角にある光学フィルム貼付位置測定装置１０１の向きが同一であり、隣接する光学フィルム貼付位置測定装置１０１の向きが逆であるように配置される。具体的に述べると、液晶パネルＰ１の対角にある光学フィルム貼付位置測定装置１０１は、カメラ３１が液晶パネルＰ１の同じ側に配置されるが、隣接する光学フィルム貼付位置測定装置１０１は、カメラ３１が液晶パネルＰ１の異なる側に配置される。 In that case, as shown in FIG. 9, the optical film sticking position measuring device 101 is arranged at the four corners of the liquid crystal panel P1, but the directions of the optical film sticking position measuring devices 101 on the diagonal are the same and adjacent to each other. It arrange | positions so that the direction of the optical film sticking position measuring apparatus 101 may be reverse. More specifically, in the optical film sticking position measuring device 101 on the opposite side of the liquid crystal panel P1, the camera 31 is disposed on the same side of the liquid crystal panel P1, but the adjacent optical film sticking position measuring device 101 is a camera. 31 is arranged on a different side of the liquid crystal panel P1.
このような配置により、例えば、液晶パネルＰ１の１対の対角に配置された光学フィルム貼付位置測定装置１０１により第１光学フィルムの貼付位置を測定し、液晶パネルＰ１の他の対角に配置された光学フィルム貼付位置測定装置１０１により第２光学フィルムの貼付位置を測定することができる。
この実施例では、より正確的に光学フィルムの貼付位置を測定するため、液晶パネルの四隅に光学フィルム貼付位置測定装置１０１が配置されるが、光学フィルム貼付位置測定装置１０１は、少なくとも液晶パネルの隣接する二隅に配置すればよい。
With such an arrangement, for example, the optical film sticking position measuring device 101 placed at one pair of diagonals of the liquid crystal panel P1 measures the sticking position of the first optical film, and is placed at the other diagonal of the liquid crystal panel P1. The applied position of the second optical film can be measured by the optical film application position measuring device 101 that has been provided.
In this embodiment, in order to more accurately measure the optical film application position, optical film application position measuring devices 101 are arranged at the four corners of the liquid crystal panel. What is necessary is just to arrange | position to two adjacent corners.
実施例４においては、光学フィルム貼付位置測定装置は、液晶パネル製造ラインの二箇所に配置されるが、二つの配置箇所は共に第２光学フィルム貼付位置の下流側に位置する点で、実施例２と異なる。 In Example 4, although the optical film sticking position measuring apparatus is arrange | positioned in two places of a liquid crystal panel manufacturing line, both two placement places are the points located in the downstream of a 2nd optical film sticking position, and Example Different from 2.
図１０に示すように、第１光学フィルム貼付位置測定装置１０１と第２光学フィルム貼付位置測定装置１０１とは、第２光学フィルム貼付け装置ＰＳ２の下流に順次配置される。即ち、二つの光学フィルム貼付位置測定装置は、共に両面に光学フィルムが貼り付けた液晶パネルに対して位置検査を行う。 As shown in FIG. 10, the first optical film sticking position measuring device 101 and the second optical film sticking position measuring device 101 are sequentially arranged downstream of the second optical film sticking device PS2. That is, the two optical film application position measuring devices both perform position inspection on the liquid crystal panel in which the optical film is attached to both surfaces.
その場合、第１光学フィルム貼付位置測定装置１０１は、図７のように液晶パネルの四角にそれぞれ配置され、且つ４つの光学フィルム貼付位置測定装置１０１におけるカメラは、すべて液晶パネルの一側に配置され、第１光学フィルムの貼付け位置を測定する。一方、第２光学フィルム貼付位置測定装置１０１は、図１１のように液晶パネルの四角にそれぞれ配置され、且つ４つの光学フィルム貼付位置測定装置１０１におけるカメラは、すべて液晶パネルの反対側に配置され、第２光学フィルムの貼付け位置を測定する。 In that case, the first optical film sticking position measuring device 101 is arranged in each square of the liquid crystal panel as shown in FIG. 7, and the cameras in the four optical film sticking position measuring devices 101 are all arranged on one side of the liquid crystal panel. Then, the attachment position of the first optical film is measured. On the other hand, the second optical film sticking position measuring device 101 is arranged in each square of the liquid crystal panel as shown in FIG. 11, and the cameras in the four optical film sticking position measuring devices 101 are all arranged on the opposite side of the liquid crystal panel. Then, the attachment position of the second optical film is measured.
この実施例によれば、第１光学フィルムも第２光学フィルムも四角で貼付位置のズレが検査でき、貼付位置の検査がより高精度に行われる。
この実施例では、より正確的に光学フィルムの貼付位置を測定するため、液晶パネルの四隅に光学フィルム貼付位置測定装置１０１が配置されるが、光学フィルム貼付位置測定装置１０１は、少なくとも液晶パネル一隅に配置すればよい。その場合でも、第１光学フィルム貼付位置測定装置におけるカメラは光学表示装置の一側に配置され、第２光学フィルム貼付位置測定装置におけるカメラは、光学表示装置の反対側に配置される。
According to this embodiment, both the first optical film and the second optical film can be squarely inspected for the displacement of the application position, and the inspection of the application position is performed with higher accuracy.
In this embodiment, the optical film application position measuring device 101 is arranged at the four corners of the liquid crystal panel in order to measure the optical film application position more accurately. Should be arranged. Even in that case, the camera in the first optical film sticking position measuring device is arranged on one side of the optical display device, and the camera in the second optical film sticking position measuring device is arranged on the opposite side of the optical display device.
上述したように、図面を参照しながら実施例を挙げて本発明の内容を説明したが、本発明の内容はこれに限らないことが勿論である。請求項の範囲内にあるいろいろな変形や改善がいずれも本発明の範囲内である。例えば、ディスプレイとして、有機ＥＬ表示装置等の画像表示装置にも適用することができる。 As described above, the content of the present invention has been described with reference to the drawings with reference to the embodiments. However, the content of the present invention is of course not limited thereto. Any variation or improvement within the scope of the claims is within the scope of the present invention. For example, the present invention can be applied to an image display device such as an organic EL display device as a display.
１０１ 光学フィルム貼付位置測定装置
１ 赤外線光源
２ リング光源
３ 撮影手段
Ｃ１ 液晶セル
Ｆ１ 偏光フィルム
Ｐ１ 液晶パネル
ＢＭ ブラックマトリクス
Ｌ１ ブラックマトリクスの端部と偏光フィルムの外縁との距離
Ｌ２ 液晶セルの外縁と偏光フィルムの外縁との距離
DESCRIPTION OF SYMBOLS 101 Optical film sticking position measuring apparatus 1 Infrared light source 2 Ring light source 3 Image | photographing means C1 Liquid crystal cell F1 Polarizing film P1 Liquid crystal panel BM Black matrix L1 The distance of the edge part of a black matrix and the outer edge of a polarizing film L2 The outer edge of a liquid crystal cell, and a polarizing film Distance to the outer edge of
Claims (10)
フレームと、
前記フレームの一端側に設けられ、赤外線を出射する赤外線光源と、
前記フレームの他端側に設けられ、前記赤外線が入射するように設けられる撮影手段と、
前記赤外線光源と前記撮影手段との間に設けられるリング光源と、
を備え、
前記赤外線光源と前記リング光源は、光軸がほぼ同軸であって、光の出射方向が対向し、その間に前記光学表示装置が通過できるように空間が形成されていることを特徴とする光学フィルム貼付位置測定装置。 An optical film sticking position measuring device for measuring a sticking position of an optical film with respect to an optical display device having an optical film attached to an optical element,
Frame,
An infrared light source provided on one end side of the frame and emitting infrared rays;
An imaging means provided on the other end side of the frame and provided so that the infrared rays are incident thereon;
A ring light source provided between the infrared light source and the photographing means;
With
An optical film characterized in that the infrared light source and the ring light source have substantially the same optical axis, the light emission directions face each other, and a space is formed between them so that the optical display device can pass therethrough. Sticking position measuring device.
前記リング光源から出射した光が前記光学表示装置により反射され、その反射光により撮影し、光学素子の外縁と前記光学フィルムの外縁との距離を測定することを特徴とする請求項１に記載の光学フィルム貼付位置測定装置。 Infrared light emitted from the infrared light source passes through the optical display device, is photographed by the transmitted light, and measures the distance between the end of the black matrix inside the optical element and the outer edge of the optical film,
The light emitted from the ring light source is reflected by the optical display device, photographed by the reflected light, and the distance between the outer edge of the optical element and the outer edge of the optical film is measured. Optical film application position measuring device.
前記光学素子の一面に第１光学フィルムを貼り付ける第１光学フィルム貼付装置と、
前記光学素子の他面に第２光学フィルムを貼り付ける第２光学フィルム貼付装置と、を順次備え、
前記第１光学フィルム貼付装置と前記第２光学フィルム貼付装置との間に、請求項１〜４のいずれかに記載の光学フィルム貼付位置測定装置が配置され、前記第１光学フィルムの貼付位置を測定し、
前記第２光学フィルム貼付装置の下流側に、請求項１〜４のいずれかに記載の光学フィルム貼付位置測定装置が配置され、前記第２光学フィルムの貼付位置を測定し、
前記光学フィルム貼付位置測定装置は、いずれの配置箇所において、少なくとも前記光学表示装置の一隅に配置されることを特徴とする光学表示装置製造ライン。 In an optical display device production line for producing an optical display device by attaching an optical film to both surfaces of an optical element,
A first optical film sticking device for sticking a first optical film on one surface of the optical element;
A second optical film sticking device for sticking a second optical film to the other surface of the optical element,
The optical film sticking position measuring device according to any one of claims 1 to 4 is arranged between the first optical film sticking device and the second optical film sticking device, and the sticking position of the first optical film is determined. Measure and
The optical film sticking position measuring device according to any one of claims 1 to 4 is disposed downstream of the second optical film sticking device, and measures the sticking position of the second optical film,
The optical film sticking position measuring device is arranged at least at one corner of the optical display device at any arrangement place.
前記光学素子の一面に第１光学フィルムを貼り付ける第１光学フィルム貼付装置と、
前記光学素子の他面に第２光学フィルムを貼り付ける第２光学フィルム貼付装置と、を順次備え、
前記第２光学フィルム貼付装置の下流側にのみ、請求項１〜４のいずれかに記載の光学フィルム貼付位置測定装置が配置され、前記第１光学フィルムと前記第２光学フィルムの貼付位置を同時に測定し、
前記光学フィルム貼付位置測定装置は、少なくとも前記光学表示装置の隣接する二隅に配置され、隣接に配置される光学フィルム貼付位置測定装置の前記撮像手段は、前記光学表示装置に対して異なる向きになるように配置されることを特徴とする光学表示装置製造ライン。 In an optical display device production line for producing an optical display device by attaching an optical film to both surfaces of an optical element,
A first optical film sticking device for sticking a first optical film on one surface of the optical element;
A second optical film sticking device for sticking a second optical film to the other surface of the optical element,
The optical film sticking position measuring device according to any one of claims 1 to 4 is arranged only on the downstream side of the second optical film sticking device, and the sticking positions of the first optical film and the second optical film are simultaneously set. Measure and
The optical film sticking position measuring device is disposed at least at two adjacent corners of the optical display device, and the imaging means of the optical film sticking position measuring device disposed adjacent to each other is in a different direction with respect to the optical display device. An optical display device production line characterized by being arranged as follows.
前記光学素子の一面に第１光学フィルムを貼り付ける第１光学フィルム貼付装置と、
前記光学素子の他面に第２光学フィルムを貼り付ける第２光学フィルム貼付装置と、を順次備え、
前記第２光学フィルム貼付装置の下流側に、第１光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置と、第２光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置とが、それぞれ二箇所に順次配置され、
前記光学フィルム貼付位置測定装置は、請求項１〜４のいずれかに記載の光学フィルム貼付位置測定装置であり、第１光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置における撮影手段が前記光学表示装置に対して一側に位置し、前記第２光学フィルムの貼付位置を測定する光学フィルム貼付位置測定装置における撮影手段が前記光学表示装置に対して前記一側の反対側に位置することを特徴とする光学表示装置製造ライン。 In an optical display device production line for producing an optical display device by attaching an optical film to both surfaces of an optical element,
A first optical film sticking device for sticking a first optical film on one surface of the optical element;
A second optical film sticking device for sticking a second optical film to the other surface of the optical element,
On the downstream side of the second optical film sticking device, an optical film sticking position measuring device for measuring the sticking position of the first optical film and an optical film sticking position measuring device for measuring the sticking position of the second optical film, respectively Placed in two places,
The optical film sticking position measuring device is the optical film sticking position measuring device according to any one of claims 1 to 4, wherein the photographing means in the optical film sticking position measuring device for measuring the sticking position of the first optical film is the device. The photographing means in the optical film sticking position measuring device that is located on one side with respect to the optical display device and measures the sticking position of the second optical film is located on the opposite side of the one side with respect to the optical display device. Optical display device production line characterized by
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| WO2022123858A1 (en) * | 2020-12-07 | 2022-06-16 | 日東電工株式会社 | Method for detecting edge part of optical film |
| WO2022123859A1 (en) * | 2020-12-07 | 2022-06-16 | 日東電工株式会社 | Optical film edge detection method |
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| JP6786381B2 (en) * | 2016-06-30 | 2020-11-18 | 日本電産サンキョー株式会社 | Alignment device |
| WO2018003578A1 (en) * | 2016-06-30 | 2018-01-04 | 日本電産サンキョー株式会社 | Alignment device |
| TWI745129B (en) * | 2020-10-20 | 2021-11-01 | 住華科技股份有限公司 | Optical film detection system and optical film detection method using the same |
| CN112596286B (en) * | 2020-12-15 | 2022-11-04 | 滁州惠科光电科技有限公司 | Polaroid detection method and device and polaroid attaching machine |
| CN114111607B (en) * | 2021-09-30 | 2024-01-23 | 杭州徐睿机械有限公司 | Detection device and detection method for gap of jump adapter press-fit assembly |
| CN114505813B (en) * | 2022-01-19 | 2023-05-05 | 业成科技（成都）有限公司 | Bonding device and bonding method |
| CN116176100A (en) * | 2022-12-22 | 2023-05-30 | 成都瑞波科材料科技有限公司 | A kind of film sticking equipment and film sticking method for sticking optical film |
| TWI880689B (en) * | 2023-03-29 | 2025-04-11 | 日商芝浦機械電子裝置股份有限公司 | Adhesion device and inspection method |
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| KR20160018328A (en) | 2016-02-17 |
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