KR20210001086A - Device for good product of polarizing plate - Google Patents

Abstract

The present application relates to a device for producing the quality of a polarizing plate, a method for producing the quality of the polarizing plate, to polarizing plate manufactured using the device for producing the quality of the polarizing plate, and an organic light emitting display device including the polarizing plate. According to the device for producing the quality of the polarizing plate and the method for producing the quality of the polarizing plate of the present application, by suppressing the defect rate, unnecessary product production can be prevented, so that the polarizing plate manufactured through the same and the organic light emitting display device including the polarizing plate can be manufactured in good quality with excellent yield.

Description

Polarizing plate manufacturing equipment {DEVICE FOR GOOD PRODUCT OF POLARIZING PLATE}

The present application relates to an apparatus for producing a quality of a polarizing plate, a method for producing a quality of the polarizing plate, a polarizing plate manufactured using the apparatus for producing a quality of the polarizing plate, and an organic light emitting display device including the polarizing plate.

Organic light emitting displays (OLEDs) are expanding into various applications such as mobile and TV.

These OLEDs are vulnerable to reflection of external light such as sunlight and lighting due to exposure of the electrodes. The organic light-emitting display device basically requires a polarizing plate that combines a linear polarizer to make linearly polarized light and a quarter wave plate to make circularly polarized light in order to block reflection of external light on the surface and have a dark sense of view when the power is off. .

In addition, recently, rollable OLED TVs have been continuously developed. In order to be able to be rollable, the product needs to be made thinner and flexible. In particular, in order to be rollable, a thin polarizing plate and a very low moisture permeability of the barrier film are required.

These products have disadvantages of lower market competitiveness compared to existing materials due to low yield, strict fairness, and expensive raw material costs. Therefore, there is a demand for a polarizing plate to be manufactured in order to solve this problem.

The subject of the present application is an apparatus for quantifying a polarizing plate that can prevent production of unnecessary products by suppressing a defect rate, a method for making a good product for the polarizing plate, a polarizing plate manufactured using the apparatus for making a good product for the polarizing plate, and an organic light emitting device including the polarizing plate. It is to provide a display device.

In order to solve the above problems, the apparatus for producing a quality polarizing plate of the present application includes: a supply unit for supplying a polarizing device that has been qualified; An unwinding unit for unwinding the barrier film wound in a roll form; An inspection unit for inspecting defects of the unwound barrier film; A discrimination unit for discriminating a good area and a defective area based on the defect of the barrier film; A laminating unit for manufacturing a polarizing plate by laminating the good-quality area of the barrier film and the good-quality polarizing element identified by the determination unit; A cutting part for cutting the laminated polarizing plate; And a control unit for controlling the bonding unit according to the determination of the determination unit.

The good-quality polarizing device may be supplied in a sheet form.

In addition, the polarizing element may sequentially include a polarizer and a 1/4 wavelength plate.

In addition, when the inspection unit inspects the barrier film unwound from the unwinding unit for defects, the surface of the barrier film may be marked.

In addition, the laminated portion may include a first roll and a second roll.

In addition, the laminated portion may pass the defective area of the barrier film without being laminated with the good-quality polarizing element.

In addition, the cutting unit may equally cut the good-quality area of the barrier film and the horizontal and vertical lengths of the good-quality polarizing element.

In addition, the control unit may control the distance between the first roll and the second roll to 200 μm to 300 μm, or control the distance between the first roll and the second roll to 3 mm to 10 mm according to the determination of the discriminating unit. I can.

In addition, the control unit may control the operation of the second roll according to the determination by the determination unit.

In addition, the method for quantifying a polarizing plate of the present application relates to a method for quantifying a polarizing plate using the apparatus for quantifying the polarizing plate, and a supply step of supplying a polarizing element that has been de-qualified; Unwinding step of unwinding the barrier film wound in a roll form; An inspection step of inspecting defects of the unwound barrier film; A discrimination step of determining a good area and a defective area based on the defect of the barrier film; A laminating step of manufacturing a polarizing plate by laminating the good-quality area of the barrier film and the good-quality polarizing element identified in the determination step; A cutting step of cutting the laminated polarizing plate; And a control step for controlling the laminating step and the cutting step according to the determination of the determination step.

In addition, the polarizing plate of the present application is manufactured using the device for producing a quality product of the polarizing plate.

In addition, the organic light emitting display device of the present application includes the polarizing plate.

According to the device for producing a good-quality polarizing plate and the method for producing a good-quality polarizing plate of the present application, the production of unnecessary products can be prevented by suppressing the defect rate, and the polarizing plate manufactured through this and the organic light-emitting display device including the polarizing plate can be obtained with excellent yield. It can be good quality.

1 is a diagram illustrating an apparatus for manufacturing a polarizing plate according to an exemplary embodiment of the present application.
FIG. 2 is a diagram illustrating a device for manufacturing a polarizing plate according to an exemplary embodiment of the present application.

Hereinafter, an apparatus for quantifying a polarizing plate of the present application will be described with reference to the accompanying drawings, and the accompanying drawings are illustrative, and the apparatus for quantifying a polarizing plate of the present application is not limited to the accompanying drawings.

1 is a diagram showing a device for manufacturing a polarizing plate according to an embodiment of the present application. As shown in FIG. 1, the apparatus for manufacturing a polarizing plate according to the present application includes a supply unit 1100, an unwinding unit 1200, an inspection unit 1300, a discrimination unit 1400, a lamination unit 1500, a cutting unit 1600, and It includes a control unit (not shown). The device for producing a good product of the polarizing plate of the present application can prevent unnecessary product production by suppressing the defect rate. In the present specification, the term "good product" refers to a normal product with a low defect rate.

The supply unit 1100 is a part for supplying the polarizing element 1110 that has been qualified. The supply unit 1100 may supply the polarizing element 1110 in a cut state.

In one example, the good-quality polarizing element 1110 may be supplied in a sheet form. In this specification, the term "sheet shape" means that it has a thin thickness compared to a large area, and thus the shape has a sheet or film shape, and assuming a planar shape, a polygon such as a triangle, a square, a pentagon, or an ellipse It means to have the form of.

The polarizing element 1110 may sequentially include a polarizer (not shown) and a quarter wave plate (not shown). In the present specification, the term "including sequentially" may mean a state in which each component is sequentially located in a serial structure.

The polarizer may be a linear polarizer. In the present specification, the term "linear polarizer" may mean a functional layer having a transmission axis formed in either direction and exhibiting anisotropic transmission characteristics with respect to incident light. For example, the linear polarizer may have a function of transmitting light vibrating in one direction from incident light vibrating in various directions, and reflecting or absorbing light vibrating in the other direction. Such a linear polarizer may be, for example, a reflective linear polarizer (hereinafter referred to as a reflective polarizer) or a reflective linear polarizer (hereinafter referred to as an absorption polarizer).

In the present specification, the term "reflective polarizer" may refer to a layer that transmits light having a direction parallel to a transmission axis from incident light vibrating in various directions, and reflects and blocks light vibrating in the other directions. In one example, the reflective polarizer may have a transmission axis and a reflection axis perpendicular to each other in a plane direction. For example, the angle formed by the transmission axis and the reflection axis may form 85° to 95° or 90°, and light vibrating in a direction parallel to the transmission axis may be transmitted, and parallel to the reflection axis. Light vibrating in a direction can be reflected.

In the present specification, the term “absorption polarizer” may refer to a layer that transmits light having a direction parallel to a transmission axis from incident light vibrating in various directions, and absorbs and blocks light vibrating in the other directions. In one example, the absorption type polarizer may have a transmission axis and an absorption axis orthogonal to each other in a plane direction. For example, the angle formed by the transmission axis and the absorption axis may form 85° to 95° or 90°, and light vibrating in a direction parallel to the transmission axis may be transmitted, and parallel to the absorption axis. Light vibrating in the direction can be absorbed.

In the present specification, when the term such as vertical, parallel, orthogonal or horizontal is used while defining an angle, it means substantially vertical, parallel, orthogonal or horizontal within a range that does not impair the desired effect, for example , Manufacturing errors or variations are included. For example, in each of the above cases, an error within about ±15°, an error within about ±10°, or an error within about ±5° may be included.

As the reflective polarizer, a conventional reflective polarizer known in the art may be used. For example, as the reflective polarizer, a reflective polarizer known as DBEF (Dual Brightness Enhancement Film) or a reflective polarizer formed by coating a liquid crystal compound such as LLC (Lyotropic liquid crystal) may be used. It is not limited.

As the absorption type polarizer, a conventional absorption type polarizer known in the art may be used. For example, as the absorption polarizer, a stretched polymer film dyed with an iodine compound or an organic dye, for example, a polyvinyl alcohol (PVA) film may be used. Such an absorption type polarizer may typically have a transmission axis and an absorption axis orthogonal to the transmission axis.

In the present specification, the term "1/4 wavelength plate" may mean a phase delay film capable of retarding incident light by 1/4 times its wavelength. Such a quarter wave plate may serve to make circularly polarized light into linearly polarized light, or to make linearly polarized light into circularly polarized light. In one example, the 1/4 wave plate may have a retardation in a plane direction of light having a wavelength of 360 nm of about 50 nm to 250 nm or about 90 nm to 200 nm. In the present specification, the term "plane direction phase difference" is a value calculated as "(n _x -n _y ) Х d", where n _x is the refractive index in the direction of the plane slow axis of the layer, and n _y is the corresponding It is the refractive index in the direction of the fast axis on the plane of the layer, and d is the thickness of the quarter wavelength film. In addition, in the present specification, the term ``slow axis'' may mean an axis in a direction representing the highest refractive index in a 1/4 wave plate, and the slow axis may be used in the same meaning as a phase delay axis in the present specification have. In the present specification, the term "fast axis" may mean an axis in a direction showing the lowest refractive index in the 1/4 wave plate, that is, a direction orthogonal to the slow axis. As the quarter wave plate, a conventional quarter wave plate known in the art may be used. For example, as the 1/4 wavelength plate, a liquid crystal film in which a liquid crystal layer is formed by aligning and polymerizing a polymerizable liquid crystal compound on a base film may be used.

The liquid crystal layer may include a polymerizable liquid crystal compound in a polymerized state. In the present specification, the term "polymerizable liquid crystal compound" may mean a compound including a moiety capable of displaying liquid crystallinity, for example, a mesogen skeleton, and including at least one polymerizable functional group. In addition, in the present specification, the term "that a polymerizable liquid crystal compound can be included in a polymerized state" means a state in which the liquid crystal compound is polymerized to form a skeleton such as a main chain or side chain of a liquid crystal polymer in the liquid crystal layer. I can. For example, the polymerizable liquid crystal compound may be included in the liquid crystal layer in a horizontally aligned state. In the present specification, the term "horizontal alignment" means that the optical axis of the liquid crystal layer including the polymerized liquid crystal compound is about 0° to about 25°, about 0° to about 15°, and about 0° to about 10° with respect to the plane of the liquid crystal layer. , It may mean a case having an inclination angle of about 0˚ to about 5˚ or about 0˚.

In addition, the polarizing element 1110 may further include a release film (not shown). The release film may be included to protect the pressure-sensitive adhesive layer formed on the polarizing element 1110 to attach the polarizing element 1110 to the panel. For example, as the release film, a polyethylene terephthalate-based film or a polyolefin-based film may be used.

The unwinding part 1200 is a part for unwinding the barrier film 1210 wound in a roll form. In addition, in this specification, the term "wound in a roll form" means a state in which it is rolled up. In addition, in this specification, the term "unwinding" means unwinding a wound product. In this case, the wound barrier film 1210 may be in a state in which a good area and a defective area are not identified.

The inspection unit 1300 is a portion for inspecting defects of the unwound barrier film 1210. The defect may be a foreign material defect of 150 μm or more.

In one example, when the inspection unit 1300 inspects the barrier film 1210 unwound from the unwinding unit 1200 for defects, the surface of the barrier film 1210 may be marked. Conversely, the inspection unit 1300 may not be marked on the surface of the barrier film 1210 if defects are not inspected on the barrier film 1210 unwound from the unwinding unit 1200. In this case, the marking may be performed automatically. The apparatus for producing a good product of the polarizing plate of the present application can automatically distinguish between a good product area and a defective area of the barrier film through the inspection unit, thereby suppressing a defect rate and preventing unnecessary product production.

The determination unit 1400 is a part that determines a good area and a defective area based on the defects of the barrier film 1210. Specifically, if the barrier film 1210 is marked, it may be determined as a defective region, and if there is no marking on the barrier film 1210, it may be determined as a good product region. For this reason, it is possible to suppress the defective rate and prevent unnecessary product production.

The determination by the determination unit 1400 may be performed by a determination means 1410 such as a camera.

The laminating part 1500 is a part for manufacturing the polarizing plate 1 by laminating the good-quality area of the barrier film 1210 and the good-quality polarizing element 1110 identified by the determination part 1400. Through this, by manufacturing a polarizing plate by laminating the good-quality area of the barrier film and the good-quality polarizing element, it is possible to suppress the defect rate and prevent unnecessary product production.

In one example, the laminated portion 1500 may include a first roll 1510 and a second roll 1520. By compressing through the first roll 1510 and the second roll 1520, the good-quality area of the barrier film and the good-quality polarizing element may be laminated to manufacture a good-quality polarizing plate.

In one example, the laminated part 1500 may pass the defective area of the barrier film 1210 without being laminated with the good-quality polarizing element 1110. Specifically, when a defective area of the barrier film 1210 is identified by the determination unit 1400, the defective area of the barrier film 1210 and the good-quality polarizing element 1110 may not be combined. , By suppressing the defect rate, unnecessary product production can be prevented.

The cutting part 1600 is a part for cutting the laminated polarizing plate 1.

In one example, the cutting part 1600 may cut the good area of the barrier film 1210 and the horizontal and vertical lengths of the good-quality polarizing element 1110 equally. For example, the cutting part 1600 may cut the polarizing plate 1 in a sheet form. In this case, the cutting may be performed regularly using a cutting means 1610 such as a laser. By cutting the laminated polarizing plate 1 by the above-described method, a good-quality polarizing plate can be manufactured.

The control unit is a part that controls the bonding unit 1500 according to the determination by the determination unit 1400.

In one example, the control unit may determine the first roll 1510 and the second roll 1520 in consideration of the total thickness of the polarizing element 1110 and the barrier film 1210 according to the determination of the determination unit 1400. The spacing of the first roll 1510 and the second roll 1520 may be controlled to be 200 μm to 300 μm, or the spacing of the first roll 1510 and the second roll 1520 may be controlled to be 3 mm to 10 mm. Specifically, when the determination unit 1400 determines a good area of the barrier film 1210, the control unit sets the distance between the first roll 1510 and the second roll 1520 to 220 µm to 280 µm or 240 µm to 260. It can be controlled in µm. In addition, when the determination unit 1400 determines the defective area of the barrier film 1210, the control unit sets the distance between the first roll 1510 and the second roll 1520 to 3 mm to 9 mm, 3 mm to 8 mm, It can be controlled from 4 mm to 7 mm or from 4 mm to 6 mm. By controlling the distance between the first roll and the second roll in the above-described range through the control unit, the good-quality area of the barrier film is laminated with the good-quality polarizing element, and the defective area of the barrier film is good. It may not be combined with the converted polarizing element, and thus, it is possible to suppress the defect rate and prevent unnecessary product production.

In addition, the control unit may control the operation of the second roll 1520 according to the determination by the determination unit 1400. Specifically, when the determination unit 1400 determines a good area of the barrier film 1210, the control unit may rotate the second roll 1520. In addition, when the determination unit 1400 determines a defective area of the barrier film 1210, the control unit may stop the rotation of the second roll 1520. By controlling the operation of the second roll 1520 through the control unit, the device for producing a good quality polarizing plate may suppress a defect rate and prevent unnecessary product production. At this time, the first roll 1520 may be rotated at a constant speed regardless of whether a good area or a defective area of the barrier film 1210 is identified. Accordingly, the polarizing element 1110 may pass between the first roll 1510 and the second roll 1520 of the laminated portion 1500. In addition, when the determination unit 1400 determines a good area of the barrier film 1210, the rotation speed of the second roll 1520 may be the same as the rotation speed of the first roll 1520.

The present application also relates to a method of manufacturing a polarizing plate. An exemplary method for making a polarizing plate good is related to a method using the above-described device for making good quality a polarizing plate. Therefore, specific matters regarding the method for manufacturing a polarizing plate to be described later may be identically applied to the description in the apparatus for manufacturing a polarizing plate, and thus will be omitted.

The method of manufacturing a polarizing plate according to the present application includes a supply step, an unwinding step, an inspection step, a determination step, a lamination step, a cutting step, and a control step. By using the method of making the polarizing plate of the present application good, it is possible to suppress the defect rate and prevent unnecessary product production.

The supplying step is a step of supplying a good-quality polarizing element. Details of the supply step are the same as those of the supply unit of the device for producing a quality product of the polarizing plate, and thus will be omitted.

The unwinding step is a step of unwinding the barrier film wound in a roll form. Details of the unwinding step are the same as those of the unwinding unit of the polarizing plate, and thus will be omitted.

The inspection step is a step of inspecting defects of the unwound barrier film. Details of the inspection step are the same as those of the inspection unit of the device for making good quality of the polarizing plate, and thus will be omitted.

The determining step is a step for discriminating a good area and a defective area based on the defect of the barrier film. Details of the determination step are the same as the determination unit of the device for making good quality of the polarizing plate, and thus will be omitted.

The laminating step is a step of manufacturing a polarizing plate by laminating the good-quality area of the barrier film and the good-quality polarizing element identified in the determination step. Details of the laminating step are the same as that of the laminating unit of the device for making good quality of the polarizing plate, and thus will be omitted.

The cutting step is a step of cutting the laminated polarizing plate. Since the details of the cutting step are the same as the cutting part of the device for making good quality of the polarizing plate, this will be omitted.

The control step is a step for controlling the lamination step and the cutting step according to the determination of the determination step. Details of the measuring step are the same as the control unit of the device for making the polarizer good, and thus will be omitted.

The present application also relates to a polarizing plate. An exemplary polarizing plate is manufactured using the above-described device for producing a quality product of the polarizing plate. Therefore, the details of the polarizing plate to be described later may be identically applied to the contents described in the apparatus for producing a quality of the polarizing plate, and thus will be omitted.

The polarizing plate of the present application is manufactured using the device for manufacturing the polarizing plate. The polarizing plate of the present application may be manufactured with a quality product of the polarizing plate, and thus may be manufactured with excellent yield.

The present application also relates to the use of the polarizing plate. The polarizing plate may be applied to various display devices such as a liquid crystal display (LCD), an electroluminescent (EL) display, a plasma display (PDP), a field emission display (FED), and an organic light emitting display (OLED). In particular, it may be usefully used in an organic light emitting display device that is sensitive to moisture and requires flexible performance. An exemplary organic light emitting display device includes the polarizing plate described above. Accordingly, details of the polarizing plate of the organic light emitting display device to be described later may be identically applied to the description of the polarizing plate of the device, and thus will be omitted. In the organic light-emitting display device, the polarizing plate may be disposed adjacent to a side of the organic light-emitting device from which light is emitted.

In the case of applying a good-quality polarizing plate with the excellent yield to the organic light emitting display device of the present application, the function of preventing glare by blocking the reflected light reflected by the upper electrode or the lower electrode, which will be described later. Can be done.

The organic light-emitting display device includes an organic light-emitting device and the polarizing plate. Specifically, the organic light emitting device includes a base substrate, a lower electrode, an organic light emitting layer, an upper electrode, and an encapsulation substrate.

The base substrate may be a glass or plastic substrate. Preferably, a plastic substrate, which is a flexible substrate, may be particularly useful as the base substrate.

One of the lower electrode and the upper electrode may be an anode, and the other may be a cathode. The anode is an electrode into which holes are injected, and the anode may be made of a transparent conductive material having a high work function and allowing emitted light to come out. For example, the anode is ITO Or IZO. The cathode is an electrode into which electrons are injected, and the cathode has a low work function and may be made of a conductive material that does not affect an organic material. For example, the cathode is aluminum (Al), calcium ( Ca) and barium (Ba) may be one selected from the group consisting of.

The organic emission layer includes an organic material capable of emitting light when a voltage is applied to the lower electrode and the upper electrode.

An auxiliary layer may be further included between the lower electrode and the organic emission layer and between the upper electrode and the organic emission layer. The auxiliary layer may include a hole transporting layer, a hole injecting layer, an electron injecting layer, or an electron transporting layer for balancing electrons and holes, and , For example, when the organic light emitting device has a top emission structure, a cathode, an electron injection layer, an electron transport layer, an organic emission layer, a hole transport layer, a hole injection layer, and an anode may be stacked in order, and the organic light emitting diode When the device has a bottom emission structure, an anode, a hole injection layer, a hole transport layer, an organic emission layer, an electron transport layer, an electron injection layer, and a cathode may be sequentially stacked.

The encapsulation substrate may be a substrate made of glass, metal, or polymer, and the lower electrode, the organic emission layer, and the upper electrode may be encapsulated to prevent the inflow of moisture and/or oxygen from the outside. The encapsulation substrate may be omitted in some cases.

As described above, the polarizing plate may be disposed adjacent to the side of the organic light emitting device from which light is emitted. For example, in the case of a bottom emission structure emitting light toward the base substrate, it may be disposed outside the base substrate, and in the case of a top emission structure emitting light toward the encapsulation substrate, Can be placed.

The polarizing plate is manufactured using a quality product of the polarizing plate, and thus, it is possible to prevent glare by blocking reflected light that is reflected by the upper electrode or the lower electrode.

The organic light-emitting display device may be manufactured by using materials and manufacturing methods of a conventional organic light-emitting display device other than the above.

A polarizing plate was manufactured using an apparatus for producing good quality of a polarizing plate according to an embodiment of the present application and an apparatus for making good quality of a polarizing plate not according to the example, and it was evaluated for defects thereof.

First, an apparatus for manufacturing a polarizing plate according to an exemplary embodiment of the present application was manufactured according to FIG. 1. Specifically, a polarizing device that was good-quality was supplied, and a barrier film wound in a roll form was unwound. Thereafter, defects of the unwound barrier film were inspected to perform automatic marking on the defective area. Thereafter, after determining a good region and a defective region based on the defects of the barrier film, the good region of the barrier film and the good product polarizing element were laminated by compressing the first and second rolls to manufacture a polarizing plate. Thereafter, the laminated polarizing plate was cut into a sheet form using a laser to manufacture a polarizing plate. At this time, the gap between the first roll and the second roll is controlled according to the good and defective areas of the barrier film, so that the gap between the first and second rolls is reduced to 250 µm. The defective area of the barrier film is laminated with the polarizing element, and the gap between the first roll and the second roll is increased to 5 mm, and the gap between the first roll and the second roll is not laminated with the polarizing element. Passed.

In addition, an apparatus for producing a quality product of a polarizing plate not according to an exemplary embodiment of the present application was manufactured according to FIG. 2. Specifically, as shown in FIG. 2, the polarizing element 2110 wound up in a roll form without being de-qualified is unwound and supplied, and the unwound barrier film 2210 and the polarizing element 2110 are examined for determination, and the determination A polarizing plate was manufactured in the same manner as in the apparatus for producing a good product according to an embodiment of the present application, except that the determination of the defective area and the defective area according to the inspection is not performed.

In the case of manufacturing a polarizing plate using the device for making good quality of the polarizing plate according to an embodiment of the present application, the defective area of the wound barrier film can be determined before lamination, so that a good-quality polarizing plate can be manufactured with a high yield. Therefore, it was possible to reduce the production cost.

On the other hand, in the case of manufacturing a polarizing plate by using a non-defective device of a polarizing plate according to an exemplary embodiment of the present application, a crystal inspection of a barrier film and a polarizing element that has not been made good, and a good area and a defective area according to the crystal inspection By laminating without performing the discrimination, it is possible to manufacture a good-quality polarizing plate with a low yield due to a large number of defects, and this increases the production cost of a good-quality polarizing plate.

1, 2: polarizer
1100, 2100: supply
1110, 2110: polarizing element
1200, 2200: winding portion
1210, 2210: barrier film
1300: inspection unit
1400: determination unit
1410: determination means
1500, 2500: bonding unit
1510, 2510: first roll
1520, 2520: second roll
1600: Foundation
1610: Foundation means

Claims (12)

A supply unit for supplying a good-quality polarizing element;
An unwinding unit for unwinding the barrier film wound in a roll form;
An inspection unit for inspecting defects of the unwound barrier film;
A discrimination unit for discriminating a good area and a defective area based on the defect of the barrier film;
A laminating unit for manufacturing a polarizing plate by laminating the good-quality area of the barrier film and the good-quality polarizing element identified by the determination unit;
A cutting part for cutting the laminated polarizing plate; And
A device for quantifying a polarizing plate comprising a control unit for controlling a lamination unit according to the determination of the determination unit. The apparatus of claim 1, wherein the polarizing element is supplied in the form of a sheet. The apparatus of claim 1, wherein the polarizing element sequentially includes a polarizer and a 1/4 wave plate. The apparatus of claim 1, wherein the inspection unit marks the surface of the barrier film when defects are inspected on the barrier film unwound from the unwinding unit. The apparatus of claim 1, wherein the laminating unit includes a first roll and a second roll. The apparatus of claim 1, wherein the bonding unit passes the defective area of the barrier film with the polarizing element that has been good quality. The apparatus of claim 1, wherein the cutting unit cuts the good region of the barrier film and the horizontal and vertical lengths of the good polarizing element equally. The method of claim 5, wherein the control unit controls the distance between the first roll and the second roll to 200 μm to 300 μm, or sets the distance between the first roll and the second roll to 3 mm to 10 according to the discrimination unit. A device for manufacturing a polarizing plate controlled by mm. The apparatus of claim 5, wherein the control unit controls the operation of the second roll according to the determination of the determination unit. It relates to a method for producing a quality polarizing plate using the device for producing a quality product according to claim 1,
A supply step of supplying a good-quality polarizing element;
An unwinding step of unwinding the barrier film wound in a roll form;
An inspection step of inspecting defects of the unwound barrier film;
A discrimination step for discriminating a good area and a defective area based on the defect of the barrier film;
A laminating step of manufacturing a polarizing plate by laminating the good-quality region of the barrier film and the good-quality polarizing element identified in the determination step;
A cutting step of cutting the laminated polarizing plate; And
A method of quantifying a polarizing plate comprising a control step for controlling a laminating step and a cutting step according to the determination of the determination step. A polarizing plate manufactured by using the device for making a polarizing plate according to claim 1. An organic light emitting display device comprising the polarizing plate according to claim 11.

Images