TWI578060B - Manufacturing apparatus for optical display device and production system for optical display device - Google Patents

Description

Manufacturing apparatus of optical display element and production system of optical display element

The present invention relates to a manufacturing apparatus of an optical display element and a production system of the optical display element.

The present application claims priority based on Japanese Patent Application No. 2013-002830, filed on Jan. 10, 2013, the content of which is incorporated herein.

Conventionally, in a production system for an optical display element such as a liquid crystal display, a liquid crystal layer is sandwiched between two mother glasses and laminated to form a mother panel, and the mother panel is divided into a plurality of liquid crystal panels (optical A method of displaying a component (ie, gang printing). The mother panel is, for example, a scribe line to a plain glass, and then pressed and cut along the cut line, and can be divided into a plurality of liquid crystal panels (for example, refer to Patent Document 1).

[Previous Technical Literature]

[Patent Literature]

[Patent Document 1] Japanese Patent Laid-Open No. 11-90900

In the liquid crystal panel, an optical member such as a polarizing film, a retardation film, or a brightness enhancement film is cut not only in the display region of the liquid crystal panel but also in the peripheral portion (frame edge portion) of the display region. The remaining portion of the size of the sheet is then fitted. Thereby, the sheet does cover the display area, and the remaining portion is disposed at the frame portion. Conventionally, the edges of the optical member are attached to each other at the frame edge portion of the liquid crystal panel.

However, in recent years, in order to reduce the peripheral portion of the display area on the display surface, the optical display member has been studied for the expansion of the display area and the miniaturization of the device (hereinafter, the optical display is reduced). The frame edge portion in the component has a condition called "slit frame edge". In the narrow-walled liquid crystal panel, the optical member is cut into a sheet having a size that matches the planar viewing angle of the liquid crystal panel, and the edge of the sheet is bonded to the outer periphery of the liquid crystal panel.

As described above, in the case of bonding the sheet of the optical member, an operation of detecting the outer peripheral shape of the liquid crystal panel and cutting it into a sheet having a shape or shape of the outer circumference is performed. As a method of detecting the outer shape, a method of detecting the four corners (corners) of the liquid crystal panel at a planar viewing angle and a rectangular shape connecting the four corners as a peripheral shape of the liquid crystal panel is conceivable.

However, in the case of manufacturing a liquid crystal panel by multi-printing as described above, in a liquid crystal panel having a rectangular shape, a corner portion is likely to be defective or burred. Therefore, in the case of the liquid crystal panel manufactured by the multi-printing, when the outer peripheral shape of the liquid crystal panel is detected, it is affected by the defect or the burr, and an outer shape larger than the outer peripheral shape of the actual liquid crystal panel is detected. It is not possible to cut into a sheet of an optical member having an outer peripheral shape of an actual liquid crystal panel, and it is easy to cause a defective product of the optical display element.

In view of the above, it is an object of the present invention to provide an apparatus for manufacturing an optical display element, which is capable of detecting an outer peripheral shape of a liquid crystal panel which is affected by a defect or a burr of a peripheral portion, and which is combined with a peripheral shape. Optical component processing. Further, it is an object of the invention to provide a production system for an optical display element which can easily produce a narrow framed optical display element.

In order to solve the above problems, the present invention adopts the following aspects.

(1) An apparatus for manufacturing an optical display element according to an aspect of the present invention, wherein the optical display element is formed by bonding an optical member to an optical display member, and includes: an imaging device having a surface on a substrate having the optical display member; a laminated body comprising a wider optical component sheet than the surface, wherein an image including the corner portion of the substrate is imaged in a plane view; and a cutting device that cuts the optical member sheet into a display region of the optical display member a portion of the optical component facing the outer portion of the optical component and the remaining portion of the optical component; and a control device that obtains an approximate contour line according to the image, the approximate contour line approximating a contour line of the planar viewing angle of the substrate, and controlling the cutting device Cutting the aforementioned optical component sheet according to the aforementioned approximate contour line; wherein the aforementioned control The device detects, on the image of the substrate included in the image, a plurality of points overlapping on both sides of the substrate sandwiching the corner portion; and calculating two approximate straight lines corresponding to the two sides based on the plurality of points; An intersection point of two approximate straight lines is set as an imaginary point corresponding to the corner portion; the imaginary point is set for each of the plurality of corner portions of the substrate; and a pattern obtained by connecting the imaginary point by a line segment is The aforementioned approximate contour line is obtained.

In addition, in the present specification, the "portion portion facing the display area" indicates a region having a size larger than the display region size and an outer shape of the optical display member, and avoiding a functional portion such as an electric component mounting portion. That is, the optical member may be formed along the outer peripheral edge of the optical display member, and formed away from the remaining portion, or may be a frame edge portion at the peripheral portion of the display region, and formed away from the remaining portion.

In the present specification, "the optical member sheet is cut according to the approximate contour line", and the optical member sheet is cut along the calculated approximate contour line or above the display region size (in the inner region of the approximate contour line). The way. In other words, the cutting position of the optical member sheet may be a position along the approximate contour line or a position overlapping the peripheral edge portion (frame edge portion) of the display region.

(2) In the above aspect (1), the lighting device may be configured to illuminate the laminated body from the side opposite to the imaging device with the laminated body interposed therebetween.

(3) In the aspect of the above (1) or (2), the control device may detect the plurality of points overlapping the both sides of the substrate, in addition to detecting a predetermined region in the vicinity of the corner portion.

(4) A production system for an optical display element according to an aspect of the present invention, wherein the optical display element is formed by bonding an optical member to an optical display member, and includes: a bonding device, and a surface of the optical display member that is transported on the line, And a device for manufacturing an optical display element according to any one of claims 1 to 3, wherein the optical member sheet having a wider surface than the surface is bonded to the optical member sheet, and the optical member unit is provided. The optical member sheet included in the laminated body is cut.

According to an aspect of the present invention, there is provided an apparatus for manufacturing an optical display element capable of detecting and eliminating an outer peripheral shape of a liquid crystal panel which is affected by a defect or a burr of a peripheral portion Processing of peripheral shaped optical components. Further, it is possible to provide a production system of an optical display element having such a manufacturing apparatus that can easily produce a narrow framed optical display element.

10‧‧‧Fitting Department

11‧‧‧Transporting device

12‧‧‧cutting device

13‧‧‧Fitting device

20‧‧‧cutting section (cutting device for optical display elements)

100‧‧‧Production system for optical display components

111‧‧‧Devolution

112‧‧‧Winding Department

131‧‧‧ peeling department

131a‧‧‧ front end

132‧‧‧Fitting head

132a‧‧‧ Keep face

132x‧‧‧Bend one side

132y‧‧‧bend his side

133‧‧‧mounting table

141‧‧‧First inspection camera

142‧‧‧Second detection camera

143‧‧‧ third detection camera

210, 210A‧‧‧Photographing device

220‧‧‧cutting device

230‧‧‧Control device

240‧‧‧Lighting device

AR‧‧‧Photography area

AR1‧‧‧ first area

AR2‧‧‧ second area

C‧‧‧ tangent

C1, C2‧‧‧ corner

CX‧‧‧ imaginary point

D, D1, D2‧‧ points

F‧‧‧Optical parts

F1‧‧‧Optical parts

F2‧‧‧Optical parts materials

F3‧‧‧Separator

F4‧‧‧Adhesive layer

FA‧‧‧Finished sheet (optical part sheet)

The remainder of FX‧‧

L‧‧‧Light

L1, L2‧‧‧ Approximate straight line

LB‧‧‧Laser light

OL‧‧‧ approximate outline

P‧‧‧LCD panel (optical display unit)

P1‧‧‧ opposite substrate

P2‧‧‧ element substrate

P3‧‧‧ exposed area

P4‧‧‧Terminal Department

PA‧‧‧ side

PA1, PA2‧‧‧ near

R1‧‧‧ raw material roll

R2‧‧‧ Separation roller

S‧‧‧ laminated body

‧‧‧‧Right state

β‧‧‧Left state

The first figure is a schematic cross-sectional view showing a production system of an optical display element.

The second drawing is a schematic view showing an optical component sheet.

The third (A) diagram is a schematic view showing a state in which the laminated body is photographed by the photographing device.

The third (B) diagram is a schematic view showing a state in which the laminated body is photographed by the photographing device.

The fourth figure is a schematic view of an image photographed by a photographing device.

The fifth figure is a diagram showing an approximate straight line obtained from a complex point on the contour line.

The sixth figure is a diagram in which the obtained imaginary point is reflected on an image photographed by the photographing apparatus.

The seventh (A) diagram is a schematic view showing a process of obtaining an approximate contour line.

The seventh (B) diagram is a schematic view showing a process of obtaining an approximate contour line.

The seventh (C) diagram is a schematic view showing a process of obtaining an approximate contour line.

The eighth drawing is a schematic view showing a state in which the sheet of the laminated body is cut by the cutting device.

Hereinafter, a manufacturing apparatus of an optical display element and a production system of an optical display element according to the present embodiment will be described with reference to the first to eighth drawings.

The first figure is a schematic cross-sectional view showing a production system 100 (hereinafter referred to as a production system 100) of an optical display element. The production system 100 includes a bonding unit 10 that bonds a sheet (optical member sheet) FA to a liquid crystal panel (optical display member) P that is transported on-line, and a cutting unit 20 that cuts the sheet FA as an optical member. F. An optical display element having an optical member F and a liquid crystal panel P is manufactured. The cutting unit 20 corresponds to a manufacturing apparatus of the optical display element of the present embodiment.

(Fitting Department)

The bonding unit 10 includes a conveying device 11 that conveys a strip-shaped optical member sheet F1 in the longitudinal direction of the optical member sheet F1, a cutting device 12 that cuts the sheet FA from the optical member sheet F1, and a bonding device 13 that sheets the sheet The FA is attached to the upper surface of the liquid crystal panel P.

The second drawing is a schematic view showing the optical component sheet F1. As shown in the second picture, light The member sheet F1 has a strip-shaped optical member material F2, and is obtained by cutting the sheet FA bonded to the liquid crystal panel P by a unit length, and a separator F3, and is laminated on the optical member material F2. The separator F3 is used as a carrier for conveying the optical member raw material F2.

An adhesive layer F4 is provided between the optical member raw material F2 and the separator F3.

The optical member raw material F2, together with the adhesive layer F4, is cut into a unit length (sheet FA unit) along a tangent line C formed over the entire width of the optical member sheet F1 to form a sheet FA. The sheet FA is peeled off from the separator F3, and is bonded to the upper surface of the liquid crystal panel P as will be described later.

Returning to the first drawing, the conveying device 11 has a winding-out portion 111 that holds the raw material roll R1 around which the strip-shaped optical member sheet F1 is wound, and simultaneously feeds the optical member sheet F1 along the longitudinal direction of the optical member sheet F1; and the winding portion 112, the separation roller R2 is held, and the separation roller R2 is taken up by the take-up sheet FA to be separated into a separate separator F3.

Moreover, although the drawings are omitted, the conveying device 11 has a plurality of guide rollers, and the optical member sheet F1 is wound along a specific conveyance path. The optical member sheet F1 has a wider width than the substrate on the side where the sheet of the liquid crystal panel P is bonded, in the horizontal direction (sheet width direction) perpendicular to the conveyance direction of the optical member sheet F1.

The winding portion 111 and the winding portion 112 are, for example, driven in synchronization with each other. Thereby, the operation of the winding portion 111 that feeds the optical member sheet F1 in the conveyance direction is synchronized with the operation of the winding unit 112 that winds the separation sheet F3, and the slack of the optical member sheet F1 and the separator F3 is suppressed. The winding portion 111 and the winding unit 112 convey the optical member sheet F1 that is taken up from the raw material roll R1 toward the optical member material F2 side on the cutting device 12 side.

The cutting device 12 is disposed facing the optical member material F2 during the conveyance of the optical member sheet F1. The cutting device 12 is provided with, for example, a circular cutting edge, and is configured to be movable in the cutting direction of the optical member sheet F1 that has been set.

The cutting device 12 cuts the optical member material F2 included in the optical member sheet F1 every time the optical member sheet F1 is fed out by a predetermined unit length over the entire width of the optical member sheet F1 in the sheet width direction. A tangent C is formed on the cut optical member sheet F1, and the tangent C is spread over the entire width of the optical member material F2 in the sheet width direction. The range separated by the tangential line C is the sheet FA, and the cutting device 12 forms the sheet FA on the separator F3.

In the following description, the entire thickness of the optical member sheet F1 is not cut. In the state in which at least a part of the separator F3 is connected, the optical member raw material F2 is cut, which is referred to as "half-cut".

In order to prevent the optical member sheet F1 (separate sheet F3) from being broken due to the tension during the operation of the optical member sheet F1, the cutting device 12 adjusts the advance and retreat positions of the cutting edge to leave a specific thickness on the separator F3, and applies half cut to Adhesive layer F4 is near the interface with a certain thickness. Further, instead of the cutting blade, it is also possible to burn by using a device that emits laser light.

The size or shape of the sheet FA formed by the cutting device 12 can be arbitrarily set in accordance with the shape of the optical member or the setting direction of the optical axis of the optical member. In the present embodiment, the optical member sheet F1 is half-cut in a direction intersecting the longitudinal direction of the optical member sheet F1, and a tangent line C is formed by vacating a predetermined interval in the optical member sheet F1 to obtain a sheet FA.

The bonding apparatus 13 has a peeling part 131, which winds the optical component sheet F1 at an acute angle, and separates the sheet FA from the separation sheet F3, and bonds the head 132 to attach and hold the sheet FA, and conveys and sticks it on the liquid crystal panel P. And the mounting table 133, the liquid crystal panel P is placed, and the liquid crystal panel P and the sheet FA are bonded together.

In the first drawing, the peeling portion 131 extends downward along the side of the optical member sheet F1 that is conveyed substantially horizontally, and extends over at least the entire width of the optical member sheet F1 in the sheet width direction. The peeling portion 131 is formed by being attached to the separator F3 side by the half-cut optical member sheet F1.

The front end portion 131a of the peeling portion 131 is formed at an acute angle in a sectional view. When the optical member sheet F1 is folded back at an acute angle by the front end portion 131a of the peeling portion 131, the sheet FA is peeled off from the separator F3 and peeled off from the tangent line C formed by the half cut. When the sheet FA is peeled off, the adhesive layer F4 formed between the sheet FA and the separator F3 is peeled off from the separator F3 together with the sheet FA. Therefore, the adhesive layer F4 is disposed on the lower surface of the sheet FA peeled off from the separator F3.

The bonding head 132 has a convex arc-shaped holding surface 132a parallel to the sheet width direction and below. The holding surface 132a has, for example, a weaker adhesive force than the adhesive layer F4 of the sheet FA, and the adhesion and peeling of the sheet FA can be repeated.

Further, the bonding head 132 has a driving device (not shown), and can be lifted and lowered by a certain amount above the peeling portion 131 (front end portion 131a) and above the mounting table 133, which will be described later, and between the peeling portion 131 and the mounting table 133. Move it properly. Furthermore, the fitting head 132 is for correcting the level. The position of the direction can be moved in parallel and rotated (rotated) in both forward and reverse directions around the normal of the placement surface.

The bonding head 132 is configured to be movable along the axis of the optical member sheet F1 in the sheet width direction, and is configured to be tiltably movable along the curved surface of the holding surface 132a. The tilting movement of the bonding head 132 is appropriately performed when the holding sheet FA is attached and when the holding sheet FA is attached to the liquid crystal panel P.

The mounting table 133 mounts the liquid crystal panel P, and in order to correct the position in the horizontal direction, it is possible to move and rotate in parallel.

Further, the bonding unit 10 includes a first detecting camera 141 disposed below the front end portion of the peeling portion 131, and detects the leading end of the sheet conveyance downstream side of the sheet FA. The second detecting camera 142 holds the image while being held by the holding unit. The sheet FA of the surface 132a; and the third detecting camera 143, the liquid crystal panel P on the photographing stage 133. Further, instead of each of the detection cameras 141 to 143, an inductor may be used.

The bonding portion 10 as described above is driven as follows as a whole.

When the optical component sheet F1 is sent out, for example, the time at which the first detecting camera 141 detects the downstream side end of the sheet FA, the conveying device 11 is temporarily stopped, and the cutting device 12 half-cuts the optical member sheet F1. That is, along the detection position based on the first detection camera 141 (the optical axis extension position of the first detection camera 141) and the cutting position based on the cutting device 12 (the cutting edge advancement and retreat position of the cutting device 12) The distance of the sheet transport path corresponds to the length of the sheet FA.

The cutting device 12 is movable along the sheet conveying path, and the distance along the sheet conveying path between the detection position based on the first detecting camera 141 and the cutting position based on the cutting device 12 can be changed. For example, in the case where the length of the formed sheet FA is different from the specification of the predetermined sheet FA, the offset can be corrected by the movement of the cutting device 12 to form the sheet FA of a specific length. Further, the sheet FA having a different length can be formed by the movement of the cutting device 12.

At the same time, the bonding head 132 is inclined so that the curved end side 132x of the holding surface 132a becomes the lower side (in the state where the first drawing is inclined to the right, indicated by the symbol α), and the curved end side 132x of the holding surface 132a is from above. The front end portion 131a of the peeling portion 131 is pressed against the front end portion 131a of the peeling portion 131 so as to be in contact with the holding surface 132a at the downstream end of the sheet FA at the front end portion 131a. Thereafter, the connection of the bonding head 132 to the driving device is broken, and the bonding head 132 is freely tilted.

In this state, when the winding portion 111 and the winding portion 112 are driven to feed the sheet FA, the bonding head 132 is passively tilted and moved so that the curved end side 132y of the holding surface 132a becomes the lower side (in the first direction) The state of the left tilt is indicated by the symbol β). Thereby, the entire sheet FA is attached to the holding surface 132a.

The bonding head 132 holding the sheet FA moves to the upper side of the mounting table 133. At this time, the sheet FA held by the bonding head 132 moves from above the peeling portion 131 to the upper side of the mounting table 133, and is photographed by the second detecting camera 142. . The captured image data is sent to a control device not shown, and the holding posture of the sheet FA on the holding surface 132a of the bonding head 132 (the position in the horizontal direction and the rotation angle around the normal line of the holding surface 132a) is detected. .

The liquid crystal panel P placed on the mounting table 133 is photographed by the third detecting camera 143. The captured image data is sent to a control device not shown, and the holding posture of the liquid crystal panel P on the mounting table 133 is detected (the position in the horizontal direction and the normal line on the upper surface of the mounting table on which the liquid crystal panel P is placed). Rotation angle).

The bonding head 132 and the mounting table 133 adjust the relative positions of the sheet FA and the liquid crystal panel P in accordance with the detected postures of the sheet FA and the liquid crystal panel P. In the mounting table 133, the bonding head 132 is actively tilted and moved by, for example, the operation of the driving device, and the upper surface of the liquid crystal panel P placed on the mounting table 133 is pressed against the curved surface of the holding surface 132a. The sheet FA is laminated.

Thereby, the laminated body S which bonded the sheet FA and the liquid crystal panel P is formed. Since the liquid crystal panel P and the sheet FA whose relative positions are adjusted are bonded, the lamination dispersion of the sheet FA is suppressed, and the accuracy of the optical axis direction of the sheet FA of the liquid crystal panel P is improved, and the chroma and contrast of the optical display element are improved. Will improve.

Further, when the cutting device 12 half-cuts the optical member sheet F1, the first detecting camera 141 can also be used as a defect mark for detecting the optical member material F2 printed on the optical member sheet F1. The defect mark is an optical member raw material F2 at the time of manufacture of the raw material roll R1 at the defect found in the optical member sheet F1, and is provided with an inkjet apparatus or the like. After the sheet FA to which the defect mark is detected is attached to the bonding head 132, it is not attached to the liquid crystal panel P, moves to a place where it is placed elsewhere, and is laminated and bonded to a waste material sheet or the like. Further, when the defect mark is detected, the cutting device 12 can be moved to be cut shorter than the sheet FA which can be bonded to the liquid crystal panel P, and the portion including the defect mark can be cut and separated.

(cutting section)

The cutting unit 20 includes an imaging device 210 that images an image of the laminated body S, and a cutting device 220 that cuts the sheet FA of the laminated body S into an optical member F that faces a portion of the display region of the liquid crystal panel P and The remaining portion FX of the outer side of the optical member F; and the control device 230 controls the cutting device 220 based on the image photographed by the photographing device 210. Further, the illuminating device 240 that illuminates the laminated body S is provided on the side opposite to the imaging device 210 with the laminated body S interposed therebetween.

The third (A) to (B) diagrams are explanatory views for explaining the operation of the cutting unit 20.

The third (A) and third (B) diagrams are schematic views of a state in which the laminated body S is photographed by the photographing device 210. First, as shown in the third (A) diagram, a plurality of (four in the drawing) imaging devices 210 are used to image the periphery of the corner portion of the liquid crystal panel P of the laminated body S.

The laminated body S has a liquid crystal panel P and a sheet FA bonded to the liquid crystal panel P.

The liquid crystal panel P has a liquid crystal layer sandwiched between the counter substrate P1 and the element substrate P2. Moreover, the liquid crystal panel P has a smaller viewing angle area of the counter substrate P1 than the element substrate P2, and when they overlap, the one end side of the element substrate P2 is exposed at a planar viewing angle. A terminal portion P4 is provided in the exposed region P3 of the element substrate P2.

The third (B) diagram is a partial plan view of the liquid crystal panel P. The liquid crystal panel P of the present embodiment is manufactured by multi-printing. Therefore, as shown in the third (B) diagram, the vicinity of the corner portion of the opposite substrate P1 (for example, the corner portions C1 and C2 of the side PA), PA1, PA2, is generated in comparison with the central portion PA3 of the side PA. Defects or burrs do not become linear. The length of the near PA1, PA2 is, for example, a liquid crystal panel for a 4-inch display, and is empirically about 5 mm.

The sheet FA is bonded to the opposite substrate P1. In the laminated body S shown in the drawing, the sheet FA has a planar viewing angle rectangle and has a wider planar viewing angle area than the opposite substrate P1.

With respect to the laminated body S of this type, the photographing device 201 is used to photograph the photographing region AR including the corner portion of the counter substrate P1. At this time, the illuminating device 240 shown in the first figure irradiates the light L from the opposite side of the photographing device 210 with the laminated body S interposed therebetween, and illuminates the laminated body S. Thereby, compared with the case where the laminated body S is illuminated from the same side as the imaging device 210, the halation due to the reflected light generated by the sheet FA can be suppressed, and an image suitable for the analysis described later can be imaged.

The image data of the image captured by the photographing device 210 is input to the control device 230, and the next processing (image processing, calculation) is performed.

(first treatment)

First, as the first processing, when the liquid crystal panel P included in the laminated body S is planarly viewed from the opposite substrate P1 side (below the opposite substrate P1) shown in the third (A) image, Processing of the contour of the opposite substrate P1.

For example, when the laminated layer S is planar, the region (the first region) where the counter substrate P1 overlaps the sheet FA and the region (the second region) of the sheet FA protruding only from the opposite substrate P1 are the transmittance of the light. Differently, in the photographed image, the second region becomes a brighter image than the first region. Therefore, when the image is binarized, the first region becomes a bright region (white), and the second region becomes a dark region (black). As a boundary between light and dark, the contour of the opposite substrate P1 becomes conspicuous.

In addition, the threshold value of the gradation at the time of binarization differs depending on the type of the bonded sheet FA or the configuration of the liquid crystal panel P at the photographing position, and therefore, an appropriate preliminary experiment can be performed.

(second processing)

The fourth figure is a schematic view of an image photographed by the photographing apparatus 210A of the third (A) diagram. In the fourth figure, the first area is represented by the symbol AR1 and the second area is represented by the symbol AR2. As the second processing, as shown in the fourth figure, in the first image processing, the contour line (edge) of the opposite substrate P1 is detected based on the binarized image data (hereinafter referred to as binarized data). The coordinates of a plurality of overlapping points D.

The coordinate axis of the detected coordinate is, for example, the upper left end of the binarized data is set as the origin, the right direction of the image is set to the X axis of the + direction, and the lower direction of the image is set to the Y axis of the + direction. Further, in the image photographed by the photographing device 210, when the two sides (contour lines) sandwiching the corner portion of the counter substrate P1 are not substantially parallel to the side of the outer periphery of the image to be photographed, the appropriate map is performed. The image data (or binarized data) is cut out for processing in any area suitable for analysis (trimming processing), and the processed image may be subjected to the second processing.

When the coordinates of the point D are detected, for example, at any position (x1) in the X-axis direction of the image based on the binarized data, when the gradation is detected from the upper end in the +Y direction, the white (first region) is changed to black. The position (y1) of the position of the (second region) can be obtained by the coordinates (x1, y1) of the point D. The same processing is performed on both sides of the corner portion C1 of the counter substrate P1, and the inspection is performed at each side. Measure the coordinates of the complex points that overlap the edges.

Further, although it is desirable to have a large number of detection points D, it is possible to set a number that does not impose an excessive processing load on the arithmetic processing to be described later. For example, 100 points D can be detected on each side.

Further, in the vicinity PA1 shown in the figure, defects or burrs are generated on the opposite substrate P1, and the sides do not become linear. Therefore, when the point D is detected, the detection range may not be set to include the near PA1 (doing It is the predetermined range near the corner). The range of the near PA1 excluded from the detection range can be appropriately set as a value obtained empirically or experimentally.

(third treatment)

As the third processing, the coordinates of the complex point D detected by the second processing are approximated by the straight line corresponding to the side of the overlapping point S. As an approximation, a generally known statistical method can be used, and for example, an approximation method of finding a regression line (approximate straight line) using the least square method can be cited.

The fifth graph shows a map in which the approximate straight line L1 is obtained by the third processing, and Y=0 is taken as the approximate straight line L1.

Here, in the figure, the point D1 drawn on the +y side or the point D2 drawn on the -y side is considered to be larger than the other point D, and the separation distance from the approximate straight line L1 is larger, and the approximate straight line L1 is used. The calculation results have a big impact. In this case, the point D1 and the point D2 can also be excluded, and the approximate straight line can be obtained again with the remaining points.

Further, the excluded point D is as shown in the fifth figure, and is not limited to two. It is also possible to determine the threshold value for the distance between the approximate straight line L1 and the point D (the absolute value of the Y coordinate of the point D in the fifth figure), or to re-exclude the point D whose absolute value of the Y coordinate is larger than the threshold value. Find an approximate straight line. The threshold value can be appropriately set as a value obtained empirically or experimentally.

The two sides of the photographic image are thus obtained to obtain an approximate straight line, and are further performed for each image captured by the four imaging devices 210.

(fourth processing)

In the fourth processing, the intersection of the approximate straight lines obtained for each of the two sides included in one image is obtained as the coordinates of the virtual point corresponding to the corner portion of the opposite substrate P1 sandwiched between the two sides.

The sixth diagram is a diagram in which an imaginary point CX obtained as an intersection of two approximate straight lines L1 and L2 obtained by the fourth processing is reflected on an image photographed by the photographing device 210. Since the coordinates of the points D used to obtain the approximate straight lines L1 and L2 are known, the approximation can be made. The straight lines L1, L2 and the imaginary point CX are reflected on the image photographed by the photographing device 210.

(Fifth processing)

As a fifth process, the imaginary point CX obtained by each of the four imaging devices 210 is used, and the pattern obtained by connecting the imaginary point CX is assumed to be the contour line (approximate contour line) of the opposite substrate P1. Seek.

The seventh (A) to seven (C) graphs show an overview of the process of obtaining the approximate contour OL. Since the relative real positions of the four photographing devices 210 are known, the relative positions of the photographing regions AR of the four photographing devices 210 are also known. Therefore, the image of the photographing area AR (the seventh (A) map) is photographed by the four photographing devices 210 of the third (A) diagram, and is arranged in a common coordinate system (real (actual) coordinate system). In this case, the coordinates of the four imaginary points CX can be calculated, and when the laminated body S is viewed from the plane, the coordinates at which the imaginary point CX is located can be obtained (the seventh (B) diagram). By connecting the four imaginary points CX thus obtained, an approximate contour line OL (seventh (C) map) can be obtained.

The eighth diagram shows a schematic view of a state in which the sheet FA of the laminated body S is cut by the cutting device 220. As the cutting device 220, a device that emits the laser light LB can be used. The control device 230 controls the cutting device 220 to emit the laser beam LB based on the approximate contour line OL obtained as described above, thereby cutting the sheet FA and cutting away the optical member F and the remaining portion FX.

According to the above, the sheet FA can be cut substantially along the edge of the counter substrate P1, and the liquid crystal panel P in which the optical member F is narrowed can be appropriately bonded. Further, if necessary, a plurality of optical members are bonded to the liquid crystal panel P by the above-described apparatus, and an optical display element in which the optical member is bonded to the liquid crystal panel P can be obtained.

According to the apparatus for manufacturing an optical display element having the above configuration, it is possible to detect and remove the outer peripheral shape of the liquid crystal panel which is affected by the defect or the burr of the peripheral portion, and to perform the processing of the optical member in the shape of the outer circumference.

Further, according to the production system of the optical display element having the above structure, the narrow-framed optical display element can be easily produced.

Further, in the present embodiment, the approximate contour line OL is along the cut sheet FA, but is not limited thereto. For example, the inner side region of the outline line OL may overlap the frame edge portion of the liquid crystal panel P. Position, cut the sheet FA. In this case, at the control device 230, It is also possible to control the cutting device 220 along the actual cut portion based on the calculated approximate contour line, and calculate the shape that is smaller than the shape of the approximate contour line by a specific size as a true cut portion. To cut the sheet FA.

As the shape indicating such a truly cut portion, it may be a similar shape in which the shape of the approximate scale is reduced by the shape drawn by the outline OL, or may be a shape drawn from the approximate outline OL. It is reduced to the inner shape only to a shape with a predetermined width.

Further, in the present embodiment, after the approximate straight line is obtained by the plurality of points D, the distance between the approximate straight line and each point D is excluded, and the distance from the threshold is excluded, and the approximate straight line is again obtained, but it is not limited. herein. For example, it is also possible to exclude points that do not satisfy the preset reference point in point D before finding an approximate straight line, and to obtain an approximate straight line with the remaining point D.

In the present embodiment, the imaging device 210 is used to image the liquid crystal panel P of the photographic layered body S from the image on the opposite substrate P1 side, but is not limited thereto.

When the liquid crystal panel P is formed by multi-joint printing, the position of the end portion may be deviated between the upper and lower substrates constituting the liquid crystal panel P. In the case where the liquid crystal panel P shown in the third (A) diagram has such a deviation, and the edge of the element substrate P2 which is farther from the photographing device 210 than the edge of the opposite substrate P1 of the photographing device 210 is disposed outside, When the image of the plane view angle is photographed by the photographing device 210, the edge of the element substrate P2 is mistakenly recognized as the edge of the counter substrate P1, and it becomes difficult to obtain an approximate contour line along the contour line of the counter substrate P1.

In this case, the imaging device 210 may be inclined toward the inner side of the opposite substrate P1 with respect to the opposite substrate P1, and the corner image of the opposite substrate P1 may be imaged from the inner side of the opposite substrate P1. When photographing in this manner, since the corner portion of the element substrate P2 is photographed in a state of being hidden in the corner portion of the counter substrate P1, the edge of the element substrate P2 is not mistakenly recognized as the edge of the counter substrate P1, and can be surely The image of the opposite substrate P1 is photographed.

The inclination angle of the photographing device 210 may be changed every time corresponding to the amount of deviation between the counter substrate P1 and the element substrate P2 of each liquid crystal panel P. Further, when the maximum value of the deviation amount is known empirically, even if the maximum deviation occurs, the inclination angle of the corner portion of the hidden element substrate P2 at the corner portion of the opposite substrate P1 can be obtained, and the photographing device 210 can be obtained only by tilting. slope Come to photography.

The preferred embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is of course not limited by these examples. Various shapes, combinations, and the like of the respective components shown in the above-described examples are examples, and various modifications can be made according to design requirements and the like without departing from the scope of the invention.

10‧‧‧Fitting Department

11‧‧‧Transporting device

12‧‧‧cutting device

13‧‧‧Fitting device

20‧‧‧cutting section (cutting device for optical display elements)

100‧‧‧Production system for optical display components

111‧‧‧Devolution

112‧‧‧Winding Department

131‧‧‧ peeling department

131a‧‧‧ front end

132‧‧‧Fitting head

132a‧‧‧ Keep face

132x‧‧‧Bend one side

132y‧‧‧bend his side

133‧‧‧mounting table

141‧‧‧First inspection camera

142‧‧‧Second detection camera

143‧‧‧ third detection camera

210‧‧‧Photographing device

220‧‧‧cutting device

230‧‧‧Control device

240‧‧‧Lighting device

F‧‧‧Optical parts

F1‧‧‧Optical parts

F2‧‧‧Optical parts materials

F3‧‧‧Separator

FA‧‧‧Finished sheet (optical part sheet)

The remainder of FX‧‧

P‧‧‧LCD panel (optical display unit)

R1‧‧‧ raw material roll

R2‧‧‧ Separation roller

‧‧‧‧Right state

β‧‧‧Left state

Claims (4)

An optical display device manufacturing apparatus comprising an optical display device in which an optical member is bonded to an optical display member, comprising: an imaging device, and an optical member sheet that is wider than the surface of the substrate on the surface of the substrate having the optical display member The laminated body includes an image of the corner portion of the substrate in a planar view; the cutting device cuts the optical member sheet into the optical member facing the display region of the optical display member, and the aforementioned optical member a remaining portion of the outer side of the optical component; and a control device that obtains an approximate contour line based on the image, the approximate contour line approximating a contour line of the planar viewing angle of the substrate, and controlling the cutting device to be cut according to the approximate contour line In the optical component sheet, the control device detects a plurality of points overlapping the both sides of the substrate sandwiching the corner portion with respect to an image of the substrate included in the image; and calculating the two sides according to the plurality of points Two approximate straight lines; the intersection of the two approximate straight lines as Said virtual portion corresponding to the corner point setting; on the substrate having a plurality of the corner portions of said virtual set point; and the imaginary line segment to point connection pattern obtained as the approximate contour lines obtained. The apparatus for manufacturing an optical display element according to claim 1, comprising: an illumination device that illuminates the laminated body from a side opposite to the imaging device with the laminated body interposed therebetween. The apparatus for manufacturing an optical display device according to claim 1, wherein the control device detects the plurality of points overlapping on the both sides of the substrate, in addition to detecting a predetermined region in the vicinity of the corner portion. A production system for an optical display device, wherein an optical display device is formed by bonding an optical member to an optical display member, comprising: a bonding device, a surface of the optical display member that is transported on a line, and an optical member that is wider than the surface And a manufacturing apparatus of the optical display element according to any one of the first to third aspects of the present invention, wherein the optical component of the laminated body is cut sheet.