WO2013129256A1 - 光学表示デバイスの生産システム及び光学表示デバイスの生産方法 - Google Patents
光学表示デバイスの生産システム及び光学表示デバイスの生産方法 Download PDFInfo
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- WO2013129256A1 WO2013129256A1 PCT/JP2013/054542 JP2013054542W WO2013129256A1 WO 2013129256 A1 WO2013129256 A1 WO 2013129256A1 JP 2013054542 W JP2013054542 W JP 2013054542W WO 2013129256 A1 WO2013129256 A1 WO 2013129256A1
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- optical member
- optical
- bonding
- liquid crystal
- sheet
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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
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/30—Polarising elements
-
- 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
- G02F1/133354—Arrangements for aligning or assembling substrates
Definitions
- the present invention relates to a production system of an optical display device such as a liquid crystal display and a production method of the optical display device.
- an optical member such as a polarizing plate to be bonded to a liquid crystal panel (optical display component) is formed from a long film into a sheet piece having a size matching the display area of the liquid crystal panel. After being cut out, packed and transported to another line, it may be bonded to a liquid crystal panel (see, for example, Patent Document 1).
- a polarizing film (patterned phase difference film, FPR) to be bonded to the display surface of the liquid crystal panel alternately has right and left eye polarizing patterns facing the pixel lines (pixel columns) of the liquid crystal panel.
- the boundary line between the polarization patterns of the polarizing film is preferably located on the black matrix between the pixel columns of the liquid crystal panel.
- An object of the present invention is to provide a method for producing an optical display device.
- One aspect according to the present invention is an optical display device production system for bonding an optical member to an optical display component, wherein the optical display component is a plurality of the optical display components conveyed on a line.
- the apparatus includes a bonding device that bonds the optical member to the optical display component, and the bonding device includes: the optical display component having a plurality of pixel columns, and a plurality of pixels corresponding to the plurality of pixel columns.
- a first imaging device that images a first alignment reference located at both ends of a first straight line parallel to the pixel row in the optical display component at a bonding position with the optical member having a polarization pattern row;
- a second imaging device that images a second alignment reference located at both ends of a second straight line parallel to the polarization pattern row in the optical member at the bonding position between the optical display component and the optical member;
- an alignment device that performs alignment at the bonding position of the optical display component and the optical member based on the imaging data of the first and second imaging devices.
- the second imaging device may also serve as the first imaging device by imaging the first alignment reference of the optical display component.
- the first alignment reference of the optical display component may be a corner of the outermost edge of the black matrix of the display area.
- the second alignment reference of the optical member is adjacent to the polarization pattern row facing the outermost edge of the optical member and the inside thereof. The structure which is the both ends of the boundary line between polarization pattern rows may be sufficient.
- One aspect according to the present invention is an optical display device production method in which an optical member is bonded to an optical display component, and the optical display component is a plurality of the optical display components conveyed on a line. While the belt-shaped optical member sheet having a width corresponding to the width of the display region is unwound from the original roll, the optical member sheet is cut to a length corresponding to the length in the transport direction of the display region, and the optical After forming the member, it includes a bonding step in which the optical member is bonded to the optical display component, and the bonding step includes: a plurality of optical display components having a plurality of pixel columns, and a plurality of pixels corresponding to the plurality of pixel columns.
- variety corresponding to a display area is cut into predetermined length, and it is set as the optical member, and bonding to the optical display component of this optical member is carried out continuously.
- the alignment reference between the optical display component and the optical member is imaged at the bonding position between the optical display component and the optical member, and the optical display component and the optical member are aligned on the basis of the imaging data. It is possible to improve the precision and contrast of the optical display device and to reduce the frame portion around the display area of the optical display component to enlarge the display area and downsize the device.
- FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. It is sectional drawing of the optical member sheet
- This embodiment demonstrates the film bonding system which comprises the one part as a production system of an optical display device.
- FIG. 1 is a schematic configuration diagram of a film bonding system 1 of the present embodiment.
- the film bonding system 1 bonds a film-shaped optical member such as a polarizing film, a retardation film, and a brightness enhancement film to a panel-shaped optical display component such as a liquid crystal panel or an organic EL panel.
- the film bonding system 1 is configured as a part of a production system that produces an optical display device including the optical display component and the optical member.
- the liquid crystal panel P is used as the optical display component.
- FIG. 2 is a plan view of the liquid crystal panel P viewed from the thickness direction of the liquid crystal layer P3.
- the liquid crystal panel P includes a first substrate P1 that has a rectangular shape in plan view, a second substrate P2 that has a relatively small rectangular shape disposed to face the first substrate P1, a first substrate P1, and a second substrate. And a liquid crystal layer P3 sealed between the substrate P2.
- the liquid crystal panel P has a rectangular shape that conforms to the outer shape of the first substrate P1 in plan view, and a region that fits inside the outer periphery of the liquid crystal layer P3 in plan view is defined as a display region P4.
- FIG. 3 is a cross-sectional view taken along the line AA in FIG.
- First, second and third optical members F11, F12, and F13 (hereinafter sometimes collectively referred to as optical member F1X) are appropriately bonded to the front and back surfaces of the liquid crystal panel P so as to overlap the display region P4.
- the in the present embodiment the first optical member F11 and the third optical member F13 as polarizing films are bonded to both the display surface side and the backlight side of the liquid crystal panel P, respectively.
- a second optical member F12 as a patterned retardation film Finilm Patterned Retarder: FPR
- FPR patterned retardation film
- the liquid crystal panel P of the present embodiment is used for an optical display device such as a so-called FPR (polarization) 3D television.
- the liquid crystal panel P of this embodiment is introduce
- the second optical member F12 is cut out from the long belt-like optical member sheet FX (see FIG. 1).
- FIG. 4 is a partial cross-sectional view of the optical member sheet FX bonded to the liquid crystal panel P.
- the optical member sheet FX includes a film-like optical member main body F1a, an adhesive layer F2a provided on one surface (the upper surface in FIG. 4) of the optical member main body F1a, and one of the optical member main bodies F1a via the adhesive layer F2a.
- the separator sheet F3a is detachably stacked on the surface, and the surface protection film F4a is stacked on the other surface (the lower surface in FIG. 4) of the optical member body F1a.
- the optical member main body F1a functions as a retardation film, and is bonded over the entire display area P4 of the liquid crystal panel P and its peripheral area. For convenience of illustration, hatching of each layer in FIG. 4 is omitted.
- the optical member body F1a is bonded to the liquid crystal panel P via the adhesive layer F2a in a state where the separator sheet F3a is separated while leaving the adhesive layer F2a on one surface thereof.
- seat FX is called the bonding sheet
- the separator sheet F3a protects the adhesive layer F2a and the optical member body F1a before being separated from the adhesive layer F2a.
- the surface protective film F4a is bonded to the liquid crystal panel P together with the optical member main body F1a.
- the surface protective film F4a is disposed on the side opposite to the liquid crystal panel P with respect to the optical member body F1a to protect the optical member body F1a.
- the surface protective film F4a is separated from the optical member main body F1a at a predetermined timing.
- the optical member sheet FX may be configured not to include the surface protective film F4a, or the surface protective film F4a may be configured not to be separated from the optical member main body F1a.
- FIG. 5 is a plan view (top view) of the film bonding system 1.
- the film bonding system 1 is demonstrated with reference to FIG. 1, FIG.
- an arrow F1 indicates the transport direction of the liquid crystal panel P.
- the upstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport upstream side
- the downstream side of the liquid crystal panel P in the transport direction is referred to as the panel transport downstream side.
- the film bonding system 1 includes an upstream conveyor 5 extending from the initial position of the bonding process to an intermediate position, a dust collecting device 6 provided on the upstream conveyor 5, and upstream of the dust collecting device 6 on the panel transport downstream side.
- a film peeling device 7 provided on the side conveyor 5, first and second intermediate conveyors 8 a and 8 b provided in parallel downstream of the upstream conveyor 5, and downstream of the upstream conveyor 5.
- a first transport device 9 for transporting the liquid crystal panel P from the end portion to the end portion on the upstream side of the panel transport of each intermediate conveyor 8a, 8b, and the first and second bondings provided so as to be hung on each intermediate conveyor 8a, 8b.
- Apparatus 10a, 10b, downstream conveyor 11 extending to the final position of the bonding process downstream of each intermediate conveyor 8a, 8b and panel conveyance of each intermediate conveyor 8a, 8b A second transport device 12 that transports the liquid crystal panel P from an end on the flow side to an end on the upstream side of the panel transport of the downstream conveyor 11, a film inspection device 13 provided on the downstream conveyor 11, and a film inspection device 13 And a defect inspection apparatus 14 provided on the downstream conveyor 11 on the downstream side of the panel conveyance.
- the film bonding system 1 sequentially performs a predetermined process on the liquid crystal panel P while conveying the liquid crystal panel P using the lines formed by the conveyors 5, 8 a, 8 b, and 11.
- the liquid crystal panel P is conveyed on the line with its front and back surfaces being horizontal.
- the liquid crystal panel P is transported in a direction in which the short side of the display area P4 is aligned with the panel transport direction on the line.
- a pair of positioning rollers 5a positioned on both sides of the upstream conveyor 5 in the horizontal direction (panel width direction) orthogonal to the panel transport direction is provided at the upstream end of the upstream conveyor 5 in the panel transport direction.
- Each part of the film bonding system 1 is comprehensively controlled by a control device 25 as an electronic control device.
- the dust collector 6 removes static electricity and collects dust on the front and back surfaces of the liquid crystal panel P before being introduced into the bonding position 10c by the bonding devices 10a and 10b. Since the liquid crystal panel P is introduced as a bonded body in which the first and third optical members F11 and F13 are already bonded to the front and back surfaces thereof, the dust collector 6 is a dry type that does not use cleaning water.
- the film peeling device 7 peels the surface protective film F4a from the first optical member F11 on the display surface side (upper surface side on the upstream conveyor 5) of the liquid crystal panel P. Thereby, the 2nd optical member F12 can be bonded on the display surface side of liquid crystal panel P so that it may overlap with the 1st optical member F11.
- Each intermediate conveyor 8a, 8b is a suspension type, and the liquid crystal panel P conveyed to each intermediate conveyor 8a, 8b has its upper surface side (backlight side) below the carrier 8c of each intermediate conveyor 8a, 8b. It is held by adsorption or the like (see FIG. 6).
- the second optical member F12 that is a patterned retardation film is formed by the corresponding one of the bonding devices 10a and 10b. Pasting is done. The detail of each bonding apparatus 10a, 10b is mentioned later.
- the liquid crystal panel P that has reached the end of the intermediate conveyor 8a, 8b on the downstream side of the panel conveyance is alternately transferred by the second conveyance device 12 to the end of the downstream conveyor 11 on the upstream side of the panel conveyance. It is conveyed to the part. Whether the bonding position of the optical film (second optical member F12) in the workpiece (liquid crystal panel P) on which film bonding is performed is appropriate for the film inspection apparatus 13 (whether the positional deviation is within the tolerance range). Perform such inspections.
- the defect inspection apparatus 14 inspects, for example, the presence or absence of a bonding defect of the workpiece by an AOI inspection (Automatic Optical Inspection).
- AOI inspection Automatic Optical Inspection
- the work for which NG determination has been made on at least one of the inspection devices 13 and 14 is discharged out of the system by a payout unit (not shown).
- the 1st bonding apparatus 10a is the bonding of the sheet piece (2nd optical member F12) of the bonding sheet
- the 1st bonding apparatus 10a is a sheet conveying apparatus 15 which conveys the optical member sheet FX along the longitudinal direction, unwinding the optical member sheet FX from the original fabric roll R1 around which the optical member sheet FX is wound, and the sheet.
- the conveying device 15 holds the sheet piece (second optical member F12) of the bonding sheet F5 cut out from the optical member sheet FX and bonds the sheet piece to the lower surface of the liquid crystal panel P conveyed to the bonding position 10c.
- a transfer table 16 to be provided.
- the sheet conveying device 15 conveys the bonding sheet F5 using the separator sheet F3a as a carrier.
- the sheet conveying device 15 holds the original roll R1 around which the belt-shaped optical member sheet FX is wound, and unwinds from the unwinding portion 15a that feeds the optical member sheet FX along its longitudinal direction, and the original roll R1.
- the optical member sheet FX has a width of the display area P4 of the liquid crystal panel P (in this embodiment, the short side length S1 of the display area P4 (see FIG. 2)) in the horizontal direction (sheet width direction) orthogonal to the conveyance direction. Equivalent) to a width S3 (see FIG. 7).
- the conveyance direction (sheet conveyance direction) of the optical member sheet FX is orthogonal to the panel conveyance direction.
- the unwinding unit 15a positioned at the start point of the sheet conveying device 15 and the winding unit 15e positioned at the end point of the sheet conveying device 15 are driven in synchronization with each other, for example.
- the unwinding portion 15a unwinds the optical member sheet FX
- the winding portion 15e winds the separator sheet F3a that has passed through the knife edge 15d.
- the upstream side in the transport direction of the optical member sheet FX (separator sheet F3a) in the sheet transport device 15 is referred to as a sheet transport upstream side
- the downstream side in the transport direction is referred to as a sheet transport downstream side.
- Each guide roller 15b changes the traveling direction of the optical member sheet FX being conveyed along the conveyance path, and at least a part of the plurality of guide rollers 15b is movable so as to adjust the tension of the optical member sheet FX being conveyed. To do.
- the length of the display area P4 in the length direction (sheet conveyance direction) in which the optical member sheet FX is orthogonal to the sheet width direction (in this embodiment, the long side length S2 of the display area P4 (see FIG. 2)
- a length S4 equivalent to (a)
- a part in the thickness direction of the optical member sheet FX is cut across the entire width along the sheet width direction (half cutting is performed).
- the cutting device 15c is configured to move the cutting blade forward and backward so that the optical member sheet FX (separator sheet F3a) is not broken by the tension acting during conveyance of the optical member sheet FX (so that a predetermined thickness remains on the separator sheet F3a).
- the half-cut is performed to the vicinity of the interface between the adhesive layer F2a and the separator sheet F3a.
- the optical member F1X and the surface protective film F4a are cut in the thickness direction, thereby forming a cut line extending over the entire width of the optical member sheet FX in the sheet width direction.
- the optical member sheet FX is divided into sections having a length S4 in the longitudinal direction by the cut line. This section becomes one sheet piece (optical member F1X) in the bonding sheet F5.
- the knife edge 15d is positioned above the optical member sheet FX conveyed substantially horizontally from the left side to the right side in FIG. 6, and extends at least over the entire width in the sheet width direction of the optical member sheet FX.
- the knife edge 15d is wound so as to be in sliding contact with the separator sheet F3a side of the optical member sheet FX after the half cut.
- the knife edge 15d wraps the optical member sheet FX at an acute angle around the sharp edge.
- the separator sheet F3a is peeled from the bonding sheet F5.
- the adhesion layer F2a (bonding surface with the liquid crystal panel P) of the bonding sheet F5 faces upward.
- a separator peeling position Immediately below the tip of the knife edge 15d is a separator peeling position, and the top surface 16a of the transport table 16 is in contact with the tip of the knife edge 15d from below, so that the surface protective film F4a of the sheet piece of the bonding sheet F5 (sticking)
- the surface opposite to the mating surface is attached to the table upper surface 16 a of the transport table 16.
- the conveyance table 16 moves together with the bonding sheet F5 along the substantially horizontal sheet conveyance path, for example, on the upstream side of the sheet conveyance from the separator peeling position.
- the table upper surface 16a of the transport table 16 has, for example, a weaker bonding force than the bonding surface (adhesive layer F2a) of the bonding sheet F5, and the surface protective film F4a of the bonding sheet F5 can be repeatedly bonded and peeled off.
- the conveyance table 16 may hold
- the adsorbing force of the transport table 16 is weaker than the adhering force of the adhering sheet F5, and the adhering sheet F5 can be adhering to the liquid crystal panel P as it is, but by releasing the adsorbing at the adhering position 10c, the adhering sheet Generation
- the transport table 16 presses the table upper surface 16a against the tip of the knife edge 15d from below when passing through the separator peeling position, and sticks the leading edge side of the bonding sheet F5 at the separator peeling position to the table upper surface 16a. Then, the whole sheet piece of the bonding sheet
- the conveyance table 16 can be appropriately moved between the separator peeling position and the bonding position 10c.
- the conveyance table 16 is connected to a driving device 17 that enables driving during the movement and operation of a bonding roller described later.
- the transfer table 16 adheres the bonding sheet F5 to the table upper surface 16a, for example, after the front end side of the bonding sheet F5 is bonded to the table upper surface 16a, the engagement with the driving device 17 is cut.
- the horizontal movement is freely possible, and the horizontal movement is passively performed from the state in accordance with the feeding of the bonding sheet F5.
- the transfer table 16 moves horizontally until the entire bonding sheet F5 is bonded to the table upper surface 16a, the transfer table 16 engages with the driving device 17 at this time, and is actively moved by the operation of the driving device 17 to be bonded position 10c. Move down.
- the conveyance table 16 has a bonding roller (not shown) that can be raised and lowered with respect to the table upper surface 16a, for example.
- the bonding roller is in a standby position that is submerged below the table upper surface 16a except during the bonding operation. After the alignment of the liquid crystal panel P and the bonding sheet F5 at the bonding position 10c, the bonding roller rises a predetermined amount from the standby position and protrudes upward from the table upper surface 16a.
- the bonding roller F5 The tip side is pressed against the lower surface of the liquid crystal panel P to be stuck. Thereafter, the bonding roller moves horizontally to the left side in the figure, so that the bonding roller rolls over the entire lower surface of the bonding sheet F5. Thereby, the bonding sheet
- seat F5 is pressed and bonded to the lower surface of liquid crystal panel P, peeling from the table upper surface 16a.
- the first laminating device 10 a captures images of both ends of the edge (long side) on the downstream side of the panel conveyance of the laminating sheet F5 from below at the laminating position 10 c.
- a pair of alignment cameras 18 that image the periphery of both ends of the edge (long side) of the display region P4 of the liquid crystal panel P that passes through the periphery of both ends and is located above the display region P4.
- the transport carrier 8c that aligns the liquid crystal panel P at the bonding position 10c based on the imaging data and the alignment that the bonding sheet F5 is aligned at the bonding position 10c based on the imaging data of each alignment camera 18 as well.
- a transfer table 16 is provided to align images of both ends of the edge (long side) on the downstream side of the panel conveyance of the laminating sheet F5 from below at the laminating position 10 c.
- the alignment camera 18 is composed of an image pickup device such as a CCD, for example, and is arranged with the optical axis of the light receiving unit directed vertically upward.
- the alignment camera 18 is movable in the panel width direction, and it is easy to image the alignment reference of the liquid crystal panel P having different panel widths.
- a pair of alignment marks M1 is provided at both ends of the edge of the liquid crystal panel P on the downstream side of the panel conveyance.
- a pair of alignment marks M1 are also provided at both end portions of the edge portion located on the upstream side of the liquid crystal panel P.
- the arrow F2 indicates the conveyance direction of the conveyance table 16.
- a predetermined line of the black matrix in the display area P4 may be read.
- Alignment standards such as each alignment mark M1 are imaged from below by each alignment camera 18 at the bonding position 10c. Based on this imaging data, the control device 25 controls the operation of the transport carrier 8c, in the X direction along the long side (sheet transport direction) of the liquid crystal panel P, the Y direction along the short side (panel transport direction), and the horizontal rotation direction. The alignment is made.
- reference numeral 18 a indicates the imaging range of the alignment camera 18.
- the pixels in the display area P4 of the liquid crystal panel P are red along the long side of the display area P4 (the horizontal direction of the optical display device to be produced, the direction in which a plurality of pixels of different colors are arranged).
- the symbols R in the figure Green (indicated by the symbol G in the figure), and Blue (indicated by the symbol B in the figure) are arranged.
- a large number of these pixels are arranged in the left-right direction to form a pixel column L, and a large number of the pixel columns L are arranged over the display area P4.
- the alignment mark M1 is provided at both ends of an arbitrary straight line T extending in parallel with the pixel row L at the edge of the liquid crystal panel P on the downstream side of the panel conveyance.
- Bonding sheet F5 (patterned retardation film) has a polarization pattern array PA extending along its long side, and a large number of this polarization pattern array PA are arranged over the bonding sheet F5.
- Each polarization pattern row PA is provided corresponding to each pixel row L of the liquid crystal panel P.
- Each polarization pattern row PA is roughly classified into two types having different polarization directions for the left and right eyes, and patterning for the left eye and patterning for the right eye are alternately arranged.
- reference sign pi1 indicates the pitch between the pixel array L and the polarization pattern array PA
- reference sign pi2 indicates the width of the gap (black matrix) between the pixel arrays L
- reference sign K indicates the boundary between the polarization pattern arrays PA of the bonding sheet F5.
- the line pi3 indicates the arrangement target width of the boundary line K. For example, in the case of a 55-inch liquid crystal display, pi1 is 630 ⁇ m and pi2 is 150 ⁇ m, and pi3 at this time is 60 ⁇ m considering the fluctuation of the boundary line K itself.
- the control device 25 controls the operation of the conveyance table 16, and alignment is performed in the X direction along the long side S4 of the bonding sheet F5, the Y direction along the short side S3, and the horizontal rotation direction.
- the bonding sheet F5 and the liquid crystal Using the alignment camera having a pair of light receiving portions that enter between the panels P and face up and down, each alignment reference of the bonding sheet F5 and the liquid crystal panel P is imaged, or each alignment of the bonding sheet F5 and the liquid crystal panel P.
- An imaging device for reference imaging may be provided individually.
- symbol ⁇ represents a relative angle between the liquid crystal panel P and the bonding sheet F5 in the horizontal rotation direction, and the liquid crystal panel P and the bonding sheet F5 are aligned in the horizontal rotation direction according to the relative angle.
- X1 and X2 indicate relative distances in the X direction between both alignment marks M1 of the liquid crystal panel P and both end portions M2 of the outermost boundary line K of the bonding sheet F5, and according to the relative distances. Then, alignment of the liquid crystal panel P and the bonding sheet F5 in the X direction is performed.
- symbols Y1 and Y2 indicate relative distances in the Y direction between the alignment marks M1 of the liquid crystal panel P and both ends M2 of the outermost boundary line K of the bonding sheet F5. Then, alignment of the liquid crystal panel P and the bonding sheet F5 in the Y direction is performed.
- the alignment marks M1 are provided only in three of the four corners in plan view, the edge of the liquid crystal panel P on the downstream side of the panel transport is provided.
- the alignment mark M1 may exist only at one end, not at both ends. In this case, in order to align the liquid crystal panel P, it may be necessary to transport the entire liquid crystal panel P to the panel transport downstream side of the alignment camera 18 or to rotate the liquid crystal panel P horizontally by 90 ° or 180 °. is there.
- the periphery of the corner of the outermost edge (edge portion) of the black matrix in the display area P4 is imaged, and predetermined image processing is performed on the imaged data.
- the alignment camera 18 may be moved to detect the center line in the Y direction of the black matrix and the boundary line K in the center of the Y direction of the bonding sheet F5 as the alignment reference. Thereby, the alignment of the liquid crystal panel P can be performed without extra transport or rotation of the liquid crystal panel P.
- the film bonding system 1 in the above-described embodiment is for bonding the optical member F1X to the liquid crystal panel P, and the liquid crystal panel P is conveyed with respect to the plurality of liquid crystal panels P conveyed on the line. While the belt-shaped optical member sheet FX having a width corresponding to the display area P4 of the panel P is unwound from the raw roll R1, the optical member sheet FX is cut to a length corresponding to the display area P4, and the optical member F1X is cut.
- bonding devices 10a and 10b for bonding the optical member F1X to the liquid crystal panel P
- the bonding devices 10a and 10b include the liquid crystal panel P having a plurality of pixel rows L, and the plurality of A straight line parallel to the pixel column L in the liquid crystal panel P at the bonding position 10c with the optical member F1X having a plurality of polarization pattern columns PA corresponding to the pixel column L.
- the polarization pattern row PA in the optical member F1X at the first imaging device that images the alignment mark M1 positioned at both ends of the optical member F1X
- the second imaging device that images both ends M2 of the boundary line K parallel to the first and second imaging devices, and the liquid crystal panel P and the optical member F1X.
- It has an alignment apparatus (conveyance table 16, conveyance carrier 8c) which performs these alignment in the bonding position 10c.
- the band-shaped optical member sheet FX having a width corresponding to the display region P4 is cut into a predetermined length to form the optical member F1X, and the optical member F1X is continuously bonded to the liquid crystal panel P.
- the polarizing plate processed according to the display region P4 is conveyed to another line. it can.
- each of these alignment references is imaged at the bonding position 10c between the liquid crystal panel P and the optical member F1X, and the liquid crystal panel P and the optical member F1X are aligned based on the imaging data, whereby the liquid crystal panel P and the optical member are aligned.
- the bonding accuracy of the member F1X is improved to improve the definition and contrast of the optical display device, and the frame G (see FIG. 3) around the display area P4 of the liquid crystal panel P is reduced to enlarge the display area and reduce the size of the device. Can be achieved.
- the said film bonding system 1 makes liquid crystal panel P and optical member F1X because said 1st imaging device also images the alignment mark M1 of said liquid crystal panel P, and it serves as said 2nd imaging device.
- the configuration can be simplified, and errors between the imaging devices can be eliminated.
- a predetermined location of the black matrix in the display area P4 (for example, the corner of the outermost edge of the black matrix) may be used as an alignment reference. In this case, it is possible to easily cope with alignment of a liquid crystal panel having no alignment mark at a desired location.
- standard (end part M2) of the said optical member F1X faces the outermost edge of the said optical member F1X, and the said polarization pattern adjacent to the inside of the said polarization pattern row
- the film bonding system 101 of this embodiment is particularly different from the first embodiment in that the arrangement of the conveyors 5, 8 a, 8 b, 11 is changed and the sub conveyor 21 is provided.
- the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the film bonding system 101 includes a sub-conveyor 21 that extends from one side of an end of the upstream conveyor 5 on the downstream side of the panel conveyance to one side of an end of the downstream conveyor 11 on the upstream side of the panel conveyance.
- the intermediate conveyors 8 a and 8 b are arranged in series with each other, and the intermediate conveyors 8 a and 8 b are arranged in parallel on the other side of the sub-conveyor 21.
- Each intermediate conveyor 8a, 8b is arranged between each conveyor 5,11.
- the film bonding system 101 includes a transport device that transports the liquid crystal panel P from an end of the upstream conveyor 5 on the downstream side of the panel transport to an end of the sub-conveyor 21 on the upstream side of the panel transport, and a downstream side of the sub-conveyor 21 that transports the panel.
- a transport device for transporting the liquid crystal panel P from the end of the downstream conveyor 11 to the upstream end of the transport of the downstream conveyor 11, and the liquid crystal panel P is exchanged between the sub-conveyor 21 and the intermediate conveyors 8a and 8b.
- a transport device is provided (both not shown).
- the arrow F1 ′ indicates the transport direction of the liquid crystal panel P between the sub conveyor 21 and the first intermediate conveyor 8a
- the arrow F1 ′′ in the figure indicates the direction of the liquid crystal panel P between the sub conveyor 21 and the second intermediate conveyor 8b. Each conveying direction is shown.
- the dimensional variation and bonding variation of the optical member F1X can be suppressed, and the production efficiency of the optical display device can be increased.
- the bonding accuracy of the liquid crystal panel P and the optical member F1X is improved to improve the clarity and contrast of the optical display device, and the frame portion G around the display area P4 of the liquid crystal panel P is reduced to enlarge the display area. Can be miniaturized.
- the film bonding system 201 of this embodiment bonds all of the first, second, and third optical members F11, F12, and F13 to the single liquid crystal panel P before the optical member bonding with respect to the first embodiment. It is particularly different in terms of matching.
- the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the film bonding system 201 includes a second upstream conveyor 23 provided so as to be connected to the downstream side of the upstream conveyor 5, an upstream bonding apparatus 23 a provided on the second upstream conveyor 23, and an upstream side.
- a cleaning device 22 provided on the conveyor 5 in place of the dust collector 6 is provided.
- the film peeling apparatus 7 is not arranged.
- the second upstream conveyor 23 is disposed between the upstream conveyor 5 and the intermediate conveyors 8a and 8b in the panel transport direction.
- the cleaning device 22 is of a water-washing type, and the liquid crystal panel P transported on the upstream conveyor 5 is subjected to brushing on the front and back surfaces, jet cleaning with cleaning water, etc., and then water droplets on the front and back surfaces of the liquid crystal panel P Remove.
- the upstream laminating apparatus 23a winds a long belt-like optical member sheet from the original roll on the plurality of liquid crystal panels P conveyed on the second upstream conveyor 23, similarly to the laminating apparatuses 10a and 10b. While taking out, the optical member sheet is cut to a predetermined length to form a third optical member F13, and then the third optical member F13 is bonded to the liquid crystal panel P.
- the liquid crystal panel P that has reached the end of the second upstream conveyor 23 on the downstream side of the panel conveys the intermediate conveyors 8a and 8b while reversing the upper and lower surfaces as necessary. It is alternately conveyed to the upstream end.
- belt shape used as the origin of the 2nd optical member F12 are obtained.
- a plywood type optical member sheet FX laminated integrally with the second optical member sheet is used. Thereby, as shown in FIG. 3, the bonding body of the liquid crystal panel P in which the third optical member F13 is bonded to the backlight side and the first and second optical members F11 and F12 are stacked and bonded to the display surface side. It is formed.
- the dimensional variation and bonding variation of the optical member F1X can be suppressed, and the production efficiency of the optical display device can be increased.
- the bonding accuracy of the liquid crystal panel P and the optical member F1X is improved to improve the clarity and contrast of the optical display device, and the frame portion G around the display area P4 of the liquid crystal panel P is reduced to enlarge the display area. Can be miniaturized.
- the film bonding system 301 according to this embodiment is different from the first embodiment in that the arrangement of the conveyors 5, 8a, 8b, and 11 is changed and the sub-conveyor 21 is provided. This is particularly different in that all of the first, second and third optical members F11, F12, and F13 are bonded to the liquid crystal panel P.
- the same components as those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.
- the film bonding system 301 includes a second upstream conveyor 23 provided so as to be connected to the panel conveyance downstream side of the upstream conveyor 5, an upstream bonding device 23a provided on the second upstream conveyor 23, and an upstream side.
- a cleaning device 22 provided on the conveyor 5 in place of the dust collector 6 is provided.
- the film peeling apparatus 7 is not arranged.
- the cleaning device 22 is of a water-washing type, and the liquid crystal panel P transported on the upstream conveyor 5 is subjected to brushing on the front and back surfaces, jet cleaning with cleaning water, etc., and then water droplets on the front and back surfaces of the liquid crystal panel P Remove.
- the upstream laminating apparatus 23a winds a long belt-like optical member sheet from the original roll on the plurality of liquid crystal panels P conveyed on the second upstream conveyor 23, similarly to the laminating apparatuses 10a and 10b. While taking out, the optical member sheet is cut to a predetermined length to form a third optical member F13, and then the third optical member F13 is bonded to the liquid crystal panel P.
- the film bonding system 301 includes a sub-conveyor 21 that extends from one side of the end of the second upstream conveyor 23 on the downstream side of the panel transport to one side of the end of the downstream conveyor 11 on the upstream side of the panel transport.
- the intermediate conveyors 8 a and 8 b are arranged in series with each other, and the intermediate conveyors 8 a and 8 b are arranged in parallel on the other side of the sub-conveyor 21.
- Each of the intermediate conveyors 8 a and 8 b is disposed between the second upstream conveyor 23 and the downstream conveyor 11.
- the film laminating system 301 includes a transport device that transports the liquid crystal panel P from the end of the second upstream conveyor 23 on the downstream side of the panel transport to the end of the sub conveyer 21 on the upstream side of the panel transport, and the panel transport of the sub conveyor 21.
- a transfer device is provided (not shown).
- the arrow F1 ′ indicates the transport direction of the liquid crystal panel P between the sub conveyor 21 and the first intermediate conveyor 8a
- the arrow F1 ′′ in the figure indicates the direction of the liquid crystal panel P between the sub conveyor 21 and the second intermediate conveyor 8b. Each conveying direction is shown.
- belt shape used as the origin of the 2nd optical member F12 are obtained.
- a plywood type optical member sheet FX laminated integrally with the second optical member sheet is used. Thereby, as shown in FIG. 3, the bonding body of the liquid crystal panel P in which the third optical member F13 is bonded to the backlight side and the first and second optical members F11 and F12 are stacked and bonded to the display surface side. It is formed.
- the dimensional variation and bonding variation of the optical member F1X can be suppressed, and the production efficiency of the optical display device can be increased.
- the bonding accuracy of the liquid crystal panel P and the optical member F1X is improved to improve the clarity and contrast of the optical display device, and the frame portion G around the display area P4 of the liquid crystal panel P is reduced to enlarge the display area. Can be miniaturized.
- the present invention is not limited to the above embodiment, and for example, relative alignment between the liquid crystal panel P and the optical member F1X may be performed by one of the transport table 16 or the transport carrier 8c.
- the structure in the said embodiment is an example of this invention, A various change is possible in the range which does not deviate from the summary of the said invention.
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Abstract
Description
本願は、2012年2月29日に出願された日本国特願2012-044477号に基づき優先権を主張し、その内容をここに援用する。
しかし、上記従来の構成では、液晶パネル及びシート片の各寸法バラツキ、並びに液晶パネルに対するシート片の貼合バラツキ(位置ズレ)が積み重なることから、偏光フィルムの偏光パターン間の境界線をブラックマトリックスの幅内に確実に配置することが困難であった。
(1)本発明に係る一態様は、光学表示部品に光学部材を貼合する光学表示デバイスの生産システムであって、ライン上を搬送される複数の前記光学表示部品に対し、前記光学表示部品の表示領域の幅に対応する幅を有する帯状の光学部材シートを原反ロールから巻き出しつつ、前記光学部材シートを前記表示領域の搬送方向における長さに対応する長さでカットして前記光学部材とした後、前記光学部材を前記光学表示部品に貼り合わせる貼合装置を備え、前記貼合装置は:複数の画素列を有する前記光学表示部品と、前記複数の画素列に対応した複数の偏光パターン列を有する前記光学部材との貼合位置で、前記光学表示部品における前記画素列と平行な第一直線の両端部に位置する第一アライメント基準を撮像する第一撮像装置と;前記光学表示部品と前記光学部材との前記貼合位置で、前記光学部材における前記偏光パターン列と平行な第二直線の両端部に位置する第二アライメント基準を撮像する第二撮像装置と;前記第一及び第二撮像装置の撮像データに基づき、前記光学表示部品と前記光学部材との前記貼合位置でこれらのアライメントを行うアライメント装置と;を有する。
(3)上記(1)または(2)の態様において、前記光学表示部品の前記第一アライメント基準が、前記表示領域のブラックマトリックスの最外縁の角部である構成であってもよい。
(4)上記(1)から(3)いずれか一項の態様において、前記光学部材の前記第二アライメント基準が、前記光学部材の最外縁に面する前記偏光パターン列とその内側に隣接する前記偏光パターン列との間の境界線の両端部である構成であってもよい。
また、光学表示部品と光学部材との貼合位置でこれらのアライメント基準をそれぞれ撮像すると共に、この撮像データに基づき光学表示部品及び光学部材のアライメントを行うことで、光学表示部品及び光学部材の貼合精度を向上させて光学表示デバイスの精彩及びコントラストを高め、かつ光学表示部品の表示領域周辺の額縁部を縮小して表示エリアの拡大及び機器の小型化を図ることができる。
液晶パネルPは、ライン上では表示領域P4の短辺をパネル搬送方向に沿わせた向きで搬送される。上流側コンベヤ5のパネル搬送上流側の端部には、パネル搬送方向と直交する水平方向(パネル幅方向)で上流側コンベヤ5の両側に位置する一対の位置決めローラ5aが設けられる。フィルム貼合システム1の各部は、電子制御装置としての制御装置25により統括制御される。
フィルム剥離装置7は、液晶パネルPの表示面側(上流側コンベヤ5上では上面側)の第一光学部材F11から表面保護フィルムF4aを剥離させる。これにより、液晶パネルPの表示面側に第一光学部材F11に重ねて第二光学部材F12を貼合可能となる。
各中間コンベヤ8a,8bにより搬送される液晶パネルPの下面側(表示面側)には、各貼合装置10a,10bの対応するものにより、パターン化位相差フィルムである第二光学部材F12の貼合がなされる。各貼合装置10a,10bの詳細は後述する。
フィルム検査装置13は、フィルム貼合がなされたワーク(液晶パネルP)における光学フィルム(第二光学部材F12)の貼合位置が適正か否か(位置ズレが公差範囲内にあるか否か)等の検査を行う。
各検査装置13,14の少なくとも一方でNG判定がなされたワークは、不図示の払い出し部によりシステム外に排出される。
第一貼合装置10aは、貼合位置10cに搬送された液晶パネルPの下面(表示面)に対して、所定サイズにカットした貼合シートF5のシート片(第二光学部材F12)の貼合を行う。
図10中符号X1,X2は液晶パネルPの両アライメントマークM1と貼合シートF5の前記最外側の境界線Kの両端部M2とのX方向での相対距離をそれぞれ示し、この相対距離に応じて液晶パネルP及び貼合シートF5のX方向のアライメントがなされる。
図10中符号Y1,Y2は液晶パネルPの両アライメントマークM1と貼合シートF5の前記最外側の境界線Kの両端部M2とのY方向での相対距離をそれぞれ示し、この相対距離に応じて液晶パネルP及び貼合シートF5のY方向のアライメントがなされる。
また、液晶パネルPと光学部材F1Xとの貼合位置10cでこれらのアライメント基準をそれぞれ撮像すると共に、この撮像データに基づき液晶パネルP及び光学部材F1Xのアライメントを行うことで、液晶パネルP及び光学部材F1Xの貼合精度を向上させて光学表示デバイスの精彩及びコントラストを高め、かつ液晶パネルPの表示領域P4周辺の額縁部G(図3参照)を縮小して表示エリアの拡大及び機器の小型化を図ることができる。
上記フィルム貼合システム1では、前記液晶パネルPのアライメントマークM1に代わり、前記表示領域P4のブラックマトリックスの所定箇所(例えばブラックマトリックスの最外縁の角部)をアライメント基準とした構成としてもよい。この場合、アライメントマークが所望箇所に無い液晶パネルのアライメントにも容易に対応できる。
上記フィルム貼合システム1では、前記光学部材F1Xのアライメント基準(端部M2)が、前記光学部材F1Xの最外縁に面する(対向する)前記偏光パターン列PAとその内側に隣接する前記偏光パターン列PAとの間の境界線Kの両端部であるため、光学部材F1Xの全面を無駄なく利用できる。
次に、本発明に係る第二実施形態について図11を参照して説明する。
この実施形態のフィルム貼合システム101は、前記第一実施形態に対して、各コンベヤ5,8a,8b,11の配置を変更すると共にサブコンベヤ21を備える点で特に異なる。その他の、第一実施形態と同一構成には同一符号を付して詳細説明は省略する。
次に、本発明に係る第三実施形態について図12を参照して説明する。
この実施形態のフィルム貼合システム201は、第一実施形態に対して、光学部材貼合前の単体の液晶パネルPに第一、第二及び第三光学部材F11,F12,F13の全てを貼合する点で特に異なる。その他の、第一実施形態と同一構成には同一符号を付して詳細説明は省略する。
これにより、図3に示す如くバックライト側に第三光学部材F13が貼合され、表示面側に第一及び第二光学部材F11,F12が重ねて貼合された液晶パネルPの貼合体が形成される。
次に、本発明に係る第四実施形態について図12を参照して説明する。
この実施形態のフィルム貼合システム301は、前記第一実施形態に対して、各コンベヤ5,8a,8b,11の配置を変更すると共にサブコンベヤ21を備え、かつ光学部材貼合前の単体の液晶パネルPに第一、第二及び第三光学部材F11,F12,F13の全てを貼合する点で特に異なる。その他の、第一実施形態と同一構成には同一符号を付して詳細説明は省略する。
これにより、図3に示す如くバックライト側に第三光学部材F13が貼合され、表示面側に第一及び第二光学部材F11,F12が重ねて貼合された液晶パネルPの貼合体が形成される。
そして、上記実施形態における構成は本発明の一例であり、当該発明の要旨を逸脱しない範囲で種々の変更が可能である。
8c 搬送キャリア(アライメント装置)
10a 第一貼合装置(貼合装置)
10b 第二貼合装置(貼合装置)
10c 貼合位置
16 搬送テーブル(アライメント装置)
18 アライメントカメラ(第一撮像装置、第二撮像装置)
P 液晶パネル(光学表示部品)
P4 表示領域
FX 光学部材シート
F11 第一光学部材(光学部材)
F12 第二光学部材(光学部材)
F13 第三光学部材(光学部材)
F1X 光学部材
R1 原反ロール
L 画素列
T 直線(第一直線)
M1 アライメントマーク(第一アライメント基準)
PA 偏光パターン列
K 境界線(第二直線)
M2 端部(第二アライメント基準)
Claims (5)
- 光学表示部品に光学部材を貼合する光学表示デバイスの生産システムであって、
ライン上を搬送される複数の前記光学表示部品に対し、前記光学表示部品の表示領域の幅に対応する幅を有する帯状の光学部材シートを原反ロールから巻き出しつつ、前記光学部材シートを前記表示領域の搬送方向における長さに対応する長さでカットして前記光学部材とした後、前記光学部材を前記光学表示部品に貼り合わせる貼合装置を備え、
前記貼合装置は:
複数の画素列を有する前記光学表示部品と、前記複数の画素列に対応した複数の偏光パターン列を有する前記光学部材との貼合位置で、前記光学表示部品における前記画素列と平行な第一直線の両端部に位置する第一アライメント基準を撮像する第一撮像装置と;
前記光学表示部品と前記光学部材との前記貼合位置で、前記光学部材における前記偏光パターン列と平行な第二直線の両端部に位置する第二アライメント基準を撮像する第二撮像装置と;
前記第一及び第二撮像装置の撮像データに基づき、前記光学表示部品と前記光学部材との前記貼合位置でこれらのアライメントを行うアライメント装置と;を有することを特徴とする光学表示デバイスの生産システム。 - 前記第二撮像装置が、前記光学表示部品の前記第一アライメント基準をも撮像することで、前記第一撮像装置を兼ねることを特徴とする請求項1に記載の光学表示デバイスの生産システム。
- 前記光学表示部品の前記第一アライメント基準が、前記表示領域のブラックマトリックスの最外縁の角部であることを特徴とする請求項1に記載の光学表示デバイスの生産システム。
- 前記光学部材の前記第二アライメント基準が、前記光学部材の最外縁に面する前記偏光パターン列とその内側に隣接する前記偏光パターン列との間の境界線の両端部であることを特徴とする請求項1に記載の光学表示デバイスの生産システム。
- 光学表示部品に光学部材を貼合する光学表示デバイスの生産方法であって、
ライン上を搬送される複数の前記光学表示部品に対し、前記光学表示部品の表示領域の幅に対応する幅を有する帯状の光学部材シートを原反ロールから巻き出しつつ、前記光学部材シートを前記表示領域の搬送方向における長さに対応する長さでカットして前記光学部材とした後、前記光学部材を前記光学表示部品に貼り合わせる貼合工程を含み、
前記貼合工程は:
複数の画素列を有する前記光学表示部品と、前記複数の画素列に対応した複数の偏光パターン列を有する前記光学部材との貼合位置で、前記光学表示部品における前記画素列と平行な第一直線の両端部に位置する第一アライメント基準を撮像する第一撮像工程と;
前記光学表示部品と前記光学部材との前記貼合位置で、前記光学部材における前記偏光パターン列と平行な第二直線の両端部に位置する第二アライメント基準を撮像する第二撮像工程と;
前記第一及び第二撮像工程で得た撮像データに基づき、前記光学表示部品と前記光学部材との前記貼合位置でこれらのアライメントを行うアライメント工程と;
を含むことを特徴とする光学表示デバイスの生産方法。
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JP2015152896A (ja) * | 2014-02-19 | 2015-08-24 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
JP2015152898A (ja) * | 2014-02-19 | 2015-08-24 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
JP2015152899A (ja) * | 2014-02-19 | 2015-08-24 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
JP2015152897A (ja) * | 2014-02-19 | 2015-08-24 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
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JP2015152899A (ja) * | 2014-02-19 | 2015-08-24 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
JP2015152897A (ja) * | 2014-02-19 | 2015-08-24 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
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WO2015125727A1 (ja) * | 2014-02-19 | 2015-08-27 | 住友化学株式会社 | 光学表示デバイスの製造方法 |
CN106030393A (zh) * | 2014-02-19 | 2016-10-12 | 住友化学株式会社 | 光学显示设备的制造方法 |
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WO2016017807A1 (ja) * | 2014-08-01 | 2016-02-04 | 日東電工株式会社 | 可撓性薄膜構造の表示セルを取り扱う方法 |
JP2021500633A (ja) * | 2018-03-16 | 2021-01-07 | エルジー・ケム・リミテッド | ディスプレイユニットの製造方法 |
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Also Published As
Publication number | Publication date |
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CN104136968B (zh) | 2018-01-09 |
JP6145893B2 (ja) | 2017-06-14 |
CN104136968A (zh) | 2014-11-05 |
KR20140140017A (ko) | 2014-12-08 |
JPWO2013129256A1 (ja) | 2015-07-30 |
TW201338986A (zh) | 2013-10-01 |
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