WO2016107080A1 - 对位设备及对位方法 - Google Patents

对位设备及对位方法 Download PDF

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Publication number
WO2016107080A1
WO2016107080A1 PCT/CN2015/080828 CN2015080828W WO2016107080A1 WO 2016107080 A1 WO2016107080 A1 WO 2016107080A1 CN 2015080828 W CN2015080828 W CN 2015080828W WO 2016107080 A1 WO2016107080 A1 WO 2016107080A1
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Prior art keywords
polarizer
angle
axis direction
alignment
optical axis
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PCT/CN2015/080828
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English (en)
French (fr)
Inventor
王州平
Original Assignee
京东方科技集团股份有限公司
成都京东方光电科技有限公司
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Application filed by 京东方科技集团股份有限公司, 成都京东方光电科技有限公司 filed Critical 京东方科技集团股份有限公司
Priority to US14/893,761 priority Critical patent/US9904079B2/en
Publication of WO2016107080A1 publication Critical patent/WO2016107080A1/zh

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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
    • G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
    • G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/62—Optical apparatus specially adapted for adjusting optical elements during the assembly of optical systems
    • 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
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/30—Polarising elements
    • G02B5/3025—Polarisers, i.e. arrangements capable of producing a definite output polarisation state from an unpolarised input state
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/003—Alignment of optical elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/003—Alignment of optical elements
    • G02B7/005—Motorised alignment
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133528—Polarisers

Definitions

  • Embodiments of the present invention relate to a aligning device and a aligning method.
  • TFT-LCD Thin Film Transistor-Liquid Crystal Display
  • polarizer automatic attaching process alignment of a polarizer having a rectangular shape is relatively easy to implement.
  • One type of attachment for a polarizing plate of a circular shape, a regular polygon shape or the like is achieved by hand attachment, and the other solution is to use a polarizing plate having a shape on a square polarizer to be attached by an automatic attaching process. After the completion of the attachment, remove the excess polarizer.
  • the alignment process of the polarizers whose shapes are circular or regular polygons the alignment accuracy of the first scheme is low, and labor and time are wasted.
  • the second solution is difficult to implement, complicated to operate, and even damages the substrate.
  • a aligning device is provided.
  • the alignment device is applied to the alignment of the polarizer.
  • the alignment device includes an angle adjustment device.
  • the angle adjusting device is configured to: perform an angle adjustment on the to-be-positioned polarizer according to an angular offset of the to-be-positioned polarizer in a plane of the to-be-positioned polarizer.
  • the angle adjustment device includes an angle acquisition device and an angle compensation device; the angle acquisition device is configured to: acquire the angular offset; the angle compensation device is configured to: rotate according to the angular offset by a predetermined rotation The axis adjusts the rotation of the to-be-positioned polarizer to reduce or eliminate the angular offset.
  • the angle acquiring device includes: an analyzer, a light intensity detecting device, and an offset angle confirming device;
  • the analyzer includes a polarization detecting sheet; and
  • the light intensity detecting device is configured to: Detecting the intensity of the light that is transmitted through the polarization detecting sheet by the alignment polarizer;
  • the offset angle confirming means is configured to: confirm the polarization to be aligned according to the light intensity detected by the light intensity detecting device The angular offset of the patch.
  • the offset angle confirming means confirms the angular shift amount of the to-be-aligned polarizer based on the mapping relationship data between the light intensity and the angular shift amount stored in advance.
  • the offset angle confirming means is configured to confirm a clip between an optical axis direction of the polarization detecting sheet and an optical axis direction of the to-be-aligned polarizer according to the light intensity detected by the light intensity detecting means An angle, and confirming the angular offset of the to-be-positioned polarizer according to a mapping relationship between the angle between the angle and the angular offset stored in advance.
  • the optical axis direction of the to-be-positioned polarizer is the absorption axis direction of the to-be-positioned polarizer, and the optical axis direction of the polarization-correcting polarizer is the absorption axis direction of the polarization-correcting polarizer; or
  • the optical axis direction of the to-be-positioned polarizer is the transmission axis direction of the to-be-positioned polarizer, and the optical axis direction of the polarization-correcting polarizer is the transmission axis direction of the polarization-correcting polarizer.
  • the angle acquiring device further includes a first rotating device, the first rotating device is configured to: rotate the analyzer polarizer; and the offset angle confirming device is configured to: in the first rotation When the device rotates the polarization detecting sheet, when the detected light intensity peaks, the angle between the optical axis direction of the polarization detecting sheet and the optical axis direction of the to-be-positioned polarizer is confirmed. The angular offset of the to-be-positioned polarizer.
  • the predetermined rotation axis is the center point of the to-be-positioned polarizer.
  • the alignment device further includes a position adjustment device configured to: polarize the to-be-aligned in the mutually perpendicular X and Y directions in a plane of the to-be-positioned polarizer The film is positionally adjusted.
  • the position adjustment device is configured to: use the alignment mark on the to-be-aligned polarizer to align the to-alignment in the X-direction and the Y-direction perpendicular to each other in the plane of the to-be-positioned polarizer
  • the polarizer is positionally adjusted.
  • a registration method for use in alignment of a polarizer.
  • the method includes: performing angle adjustment on the to-be-positioned polarizer according to an angular offset of the to-be-positioned polarizer in a plane of the to-be-positioned polarizer.
  • the angle adjustment of the to-be-positioned polarizer according to the angular offset of the to-be-positioned polarizer in the plane of the to-be-positioned polarizer includes: acquiring the angular offset; According to the angular offset, the to-be-positioned polarizer is rotationally adjusted with a predetermined rotation axis to reduce or eliminate the angular offset.
  • obtaining the angular offset includes: detecting an intensity of light passing through both the to-be-aligned polarizer and the polarization detecting polarizer; and confirming the to-be-aligned polarized light according to the detected light intensity The angular offset of the patch.
  • the confirming the angular offset of the to-be-positioned polarizer according to the detected light intensity comprises: according to mapping data between the light intensity and the angular offset stored in advance And confirming the angular offset of the to-be-positioned polarizer.
  • the confirming the angular offset of the to-be-aligned polarizer according to the detected light intensity comprises: confirming an optical axis direction of the polarization detecting sheet according to the detected light intensity and the An angle between the optical axis directions of the alignment polarizers; an angle between the optical axis direction of the polarization detecting sheet and the optical axis direction of the alignment polarizer and the angular offset
  • the mapping relationship data between the two confirms the angular offset of the to-be-positioned polarizer.
  • the optical axis direction of the to-be-positioned polarizer is the absorption axis direction of the to-be-positioned polarizer, and the optical axis direction of the polarization-correcting polarizer is the absorption axis direction of the polarization-correcting polarizer; or
  • the optical axis direction of the to-be-positioned polarizer is the transmission axis direction of the to-be-positioned polarizer, and the optical axis direction of the polarization-correcting polarizer is the transmission axis direction of the polarization-correcting polarizer.
  • the method further includes: rotating the polarization detecting sheet; in the process of rotating the polarization detecting sheet, when the detected light intensity peaks, according to the light of the polarization detecting sheet
  • the angle between the axial direction and the optical axis direction of the to-be-positioned polarizer confirms the angular offset of the to-be-parallel polarizer.
  • the predetermined rotation axis is the center point of the to-be-positioned polarizer.
  • the method further includes: performing position adjustment on the to-be-positioned polarizer in mutually perpendicular X and Y directions in a plane in which the to-be-positioned polarizer is located.
  • the position adjustment of the to-be-positioned polarizer in the X-direction and the Y-direction perpendicular to each other in a plane in which the alignment polarizer is located includes: a plane in which the to-be-aligned polarizer is located
  • the position adjustment of the to-be-positioned polarizer is performed by using the alignment mark on the to-be-positioned polarizer in mutually perpendicular X and Y directions.
  • FIG. 1 is a schematic structural diagram of a aligning device according to an embodiment of the present invention
  • FIG. 2 is a schematic structural diagram of another aligning device according to an embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of still another aligning device according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of still another aligning device according to an embodiment of the present invention.
  • FIG. 5 is a schematic structural diagram of still another aligning device according to an embodiment of the present invention.
  • FIG. 6 is a schematic structural diagram of still another aligning device according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a polarizer according to an embodiment of the present invention.
  • FIG. 8 is a schematic diagram of a alignment process of a polarizer according to an embodiment of the present invention.
  • FIG. 9 is a schematic flowchart diagram of a method for aligning according to an embodiment of the present invention.
  • FIG. 10 is a schematic flowchart diagram of another alignment method according to an embodiment of the present invention.
  • FIG. 11 is a schematic flowchart diagram of still another method for aligning according to an embodiment of the present invention.
  • FIG. 12 is a schematic flowchart diagram of still another method for aligning according to an embodiment of the present invention.
  • FIG. 13 is a schematic flowchart diagram of still another method for aligning according to an embodiment of the present invention.
  • Embodiments of the present invention provide a aligning device that is applied to the alignment of a polarizer.
  • the alignment device includes an angle adjustment device 1.
  • the angle adjusting device 1 is configured to perform angle adjustment on the alignment polarizer according to an angular offset of the to-be-positioned polarizer in a plane of the to-be-positioned polarizer.
  • the positional offset or distance offset may be an amount that characterizes the deviation between the positional polarizer and the expected position.
  • the angular offset may be an amount that characterizes the deviation between the alignment polarizer and the expected angle. More specifically, the positional offset refers to an x point in which the arbitrary point or the preset point on the alignment polarizer is perpendicular to each other.
  • the angular offset refers to the rotation of the to-be-polarized polarizer around an arbitrary point or a preset point (rotation due to an error or other operation)
  • the resulting angular offset is manifested by the fact that the actual optical axis direction of the alignment polarizer does not conform to the expected optical axis direction.
  • the alignment process of the polarizer for example, it is possible to confirm whether there is still an angular offset before or after the physical position alignment based on any point or set point on the alignment polarizer, if there is an angular offset Rotating the arbitrary point or the preset point as an axis makes an angle adjustment for the existing angular offset, so that the angular offset is zero, that is, the position and the angle are accurately aligned. If there is no angular offset, no angular compensation is processed.
  • this embodiment only describes the alignment and angle adjustment in the plane where the polarizer is located, but it is not limited to the alignment and angle adjustment in the plane where the polarizer is located.
  • the alignment device and the alignment method provided by the embodiments of the present invention are also applicable to the alignment and angle adjustment in other planes.
  • the specific device of the angle adjusting device is not particularly limited in this embodiment, and any device that can implement the corresponding function can be applied to the embodiment.
  • the aligning device provided by the embodiment of the present invention is applied to the aligning process of the polarizer and includes an angle adjusting device, and the angle adjusting device can be in the plane of the to-be-positioned polarizer according to the to-be-aligned polarizer.
  • the angular offset is used to adjust the angle of the alignment polarizer.
  • the alignment between the absorption axis or the transmission axis in the polarizer and the reference position edge in the display device can be achieved according to the angular offset of the polarizer, thereby solving the existing
  • the problem of the alignment of the non-rectangular polarizer is difficult, the alignment difficulty in the alignment process of the non-rectangular polarizer is reduced, and the alignment accuracy of the polarizer is improved, and the alignment is ensured.
  • the performance of the display device is possible.
  • the angle adjusting device 1 includes an angle acquiring device 11 and an angle compensating device 12.
  • the angle acquisition means 11 is arranged to acquire an angular offset.
  • the angle offset can be obtained in various ways, for example, obtaining an angle between an optical axis direction of the to-be-positioned polarizer and a preset reference direction to obtain an angular offset.
  • the preset reference direction may be a direction in which the reference position edge in the substrate is displayed, or the direction in which the optical axis of the polarization detecting polarizer described below is directly used as a preset reference direction, or a straight line set at other positions. ,Straight The direction is the preset reference direction.
  • the angle compensating device 12 is configured to perform rotational adjustment of the alignment polarizer with a predetermined rotation axis according to the angular offset amount to reduce or eliminate the angular offset amount.
  • the amount of rotation adjustment ie, the amount of compensation
  • the amount of compensation exactly offsets the amount of angular offset, and the effect of optimal angular offset correction can be achieved.
  • the predetermined rotation axis is the center point of the to-be-positioned polarizer.
  • the output of the angle acquisition device 11 is connected to the input of the angle compensation device 12.
  • the angle acquiring device 11 includes an analyzer 111, a light intensity detecting device 112, and an offset angle confirming device 113.
  • the output of the analyzer 111 is connected to the input of the light intensity detecting device 112.
  • the output of the light intensity detecting means 112 is connected to the input end of the offset angle confirming means 113.
  • the analyzer 111 includes a polarization detecting sheet.
  • the light intensity detecting means 112 is arranged to detect the intensity of light passing through both the alignment polarizer and the polarization detecting polarizer.
  • the offset angle confirming means 113 is provided to confirm the angular shift amount of the to-be-positioned polarizer based on the light intensity detected by the light intensity detecting means 112.
  • the analyzer may be disposed above or below the to-be-positioned polarizer; or, the analyzer may be disposed on the right or left side of the to-be-positioned polarizer. It should be noted that, in this embodiment, only the position of the analyzer is illustrated, but it is not limited to these positions. In the actual design, any position that can realize the function of the analyzer can be applied.
  • the light intensity detecting device can detect the received intensity of the deflected light passing through the alignment polarizer and the analyzer, and send the obtained light intensity of the deflected light to the offset angle confirming device, and the offset angle confirming device can The intensity of the light determines the angular offset between the optical axis direction of the alignment polarizer and the preset reference direction.
  • the angle acquisition device 11 further includes a light source 114.
  • the light source 114 is configured to emit light to the to-be-positioned polarizer.
  • the alignment polarizer is located between the light source 114 and the analyzer 111.
  • the light source 114 may be a natural light source, a circularly polarized light source, an elliptically polarized light source, a partially polarized light source, or a linearly polarized light source. It should be noted that if the light source is a linearly polarized light source, the technical solution can be realized by rotating the linearly polarized light source multiple times to achieve the required technical effect, and of course, without rotating, the corresponding different light intensity and the optical axis are passed. Mapping relationship can also Achieve the corresponding technical effects. Of course, in this embodiment, a circularly polarized light source is preferably used. In this case, it is not necessary to adjust the rotation of the light source, which is relatively simple, and the accuracy of the obtained result is also high.
  • the light source may be disposed below or above the to-be-positioned polarizer, and correspondingly, the analyzer may be disposed above or below the to-be-positioned polarizer; or the light source may be disposed on the to-be-aligned polarizer.
  • the analyzer On the left or right side, correspondingly, the analyzer can be placed on the right or left side of the to-be-positioned polarizer. It should be noted that, in this embodiment, only the positions of the light source and the analyzer are exemplified, but it is not limited to these positions. In the actual design, any position that can realize the functions of the light source and the analyzer can be applied.
  • the offset angle confirming means 113 confirms the angular shift amount of the to-be-positioned polarizer based on the mapping relationship data between the previously stored light intensity and the angular shift amount.
  • the offset angle confirming means 113 is configured to confirm the angle between the optical axis direction of the polarization detecting sheet and the optical axis direction of the to-be-aligned polarizer according to the light intensity detected by the light intensity detecting means 112, and according to The mapping relationship data between the included angle and the angular offset amount stored in advance confirms the angular offset amount of the to-be-positioned polarizer.
  • the optical axis direction of the alignment polarizer is the absorption axis direction of the polarization polarizer to be aligned
  • the optical axis direction of the polarization detecting polarizer is the absorption axis direction of the polarization detecting polarizer
  • the optical axis of the alignment polarizer The direction is the transmission axis direction of the alignment polarizer
  • the optical axis direction of the polarization detecting sheet is the transmission axis direction of the polarization detecting sheet.
  • the angle between the optical axis direction of the alignment polarizer and the optical axis direction of the polarization detecting sheet is the offset of the angle of the alignment polarizer, and the optical axis direction of the alignment polarizer is checked.
  • the larger the angle between the optical axis directions of the polarizer the larger the offset of the angle of the polarizer to be aligned; the direction of the optical axis of the alignment polarizer and the optical axis of the polarization polarizer
  • the smaller the angle the smaller the offset of the angle of the polarizer to be aligned.
  • a feasible implementation solution is to confirm the angle between the optical axis direction of the alignment polarizer and the optical axis direction of the polarization detecting sheet, and then move the to-be-aligned polarizer such that the optical axis direction of the alignment polarizer is When the angle between the optical axis directions of the polarization detecting sheet is zero, the accurate alignment of the to-be-positioned polarizer can be achieved.
  • the setting method of the optical axis direction described above is more efficient and simple for the acquisition process of the angular offset, and the obtained numerical accuracy is also higher.
  • the absorption axis direction of the alignment polarizer is the optical axis direction thereof
  • the transmission axis direction of the polarization detecting sheet is the optical axis direction thereof
  • Technical effect just take the absorption axis direction and It is sufficient to consider the factor that the direction of the axis is vertical.
  • the angle acquiring device 11 further includes a first rotating device 115.
  • the first rotating device 115 is arranged to rotate the polarization detecting sheet; of course, it may be arranged to rotate the alignment polarizer.
  • the offset angle confirming means 113 is arranged to: when the first rotating means 115 rotates the polarization detecting polarizer, when the detected light intensity peaks, according to the optical axis direction of the polarization detecting sheet and the polarization to be aligned
  • the angle of the optical axis direction of the sheet confirms the angular offset of the alignment polarizer. In this case, it is not necessary to use the mapping relationship data between the light intensity and the angular offset, or the mapping relationship between the angle and the angular offset, and it is only necessary to wait until the above peak occurs to directly confirm the polarization detection.
  • the angle between the optical axis direction of the sheet and the optical axis direction of the polarizer to be aligned (when the absorption axis or the transmission axis is used, the angle between the two axes is zero when one peak occurs; one is adopted by the absorption axis and the other is transmitted through When the axis is at the peak, the angle between the two axes is 90 degrees. According to this angle, the angle offset can be easily determined directly; this scheme is simpler to implement.
  • the angle between the optical axis direction of the alignment polarizer and the optical axis direction of the polarization-correcting polarizer is zero, and the alignment polarizer is to be aligned.
  • the angular offset is zero, and the angle of the alignment polarizer is compensated to zero degrees, that is, no rotation is required.
  • the first rotating device 115 may illustratively include: a mechanical clamping arm, a rotary table, a switch, and the like.
  • the first rotating means can judge whether or not to rotate the polarizer based on the received information and the pre-stored information, so that the final position of the polarizer is at a position that satisfies the condition.
  • the aligning device further includes: a position adjusting device 2.
  • the position adjusting device 2 is configured to adjust the position of the alignment polarizer in the X direction and the Y direction perpendicular to each other in the plane of the to-be-positioned polarizer.
  • the position adjusting device 2 is configured to perform position adjustment of the alignment polarizer by the alignment mark on the alignment polarizer in the X and Y directions perpendicular to each other in the plane of the to-be-positioned polarizer.
  • the position adjusting device may be configured to adjust the position of the alignment polarizer before the angle adjusting device performs angle adjustment on the alignment polarizer.
  • the connection relationship between the position adjusting device and the angle adjusting device is exemplarily illustrated in FIG. 6 in this embodiment, and is not unique. This can only be the case. In a specific application, the order between the position adjustment device and the angle adjustment device can be determined according to the actual design requirements.
  • the positional adjustment of the alignment polarizer is performed before the angle adjustment of the alignment polarizer is performed.
  • the determination may be made by determining whether the coordinates of the position of the alignment polarizer and the coordinates of the position of the display substrate correspond to each other; if the position of the alignment polarizer does not correspond to the position of the display substrate, the position of the alignment polarizer is adjusted. If the position of the alignment polarizer corresponds to the position of the display substrate, no processing is performed. After the position adjustment, the angle adjustment of the alignment polarizer is performed, which can greatly improve the alignment efficiency and the alignment accuracy.
  • the alignment method provided by the prior art is used to perform the alignment of the polarizer. If the alignment deviation occurs, the alignment inaccuracy can be easily distinguished. Accurate alignment. However, if the shape of the polarizer is a regular polygon or a circle, as shown in FIG. 7, even if the alignment of the polarizer is inaccurate, the alignment method in the prior art cannot know the deviation of the alignment, so that the final formation is performed. The alignment accuracy of the polarizer in the display device is poor, which affects the performance of the display device. However, after the alignment method provided in the embodiment of the present invention is adopted, the alignment accuracy of the polarizer can be ensured. Referring to FIG.
  • an exemplary circular shape of the to-be-positioned polarizer is described as follows: first, a polarizer that needs to be aligned is acquired, and then the polarizer is irradiated by the light source, and then the information is sent to the angle acquiring device, and the angle acquiring device determines Whether the polarizer needs to be deflected, and then transmitting the data information to the first rotating device, and the first rotating device angularly rotates the polarizer according to the feedback data information to obtain a polarizer with accurate alignment accuracy, and then attaching the polarizer In the corresponding display device, the alignment process of the polarizer is completed.
  • the direction of the arrow in the figure is expressed as the absorption axis or the transmission axis direction of the polarizer.
  • the aligning device provided by the embodiment of the present invention, the aligning device is applied to the aligning process of the polarizer, and includes: an angle adjusting device, wherein the angle adjusting device can be in the plane of the to-be-positioned polarizer according to the to-be-aligned polarizer
  • the angle offset is used to adjust the angle of the alignment polarizer, so that the polarizer of any shape can realize the absorption axis or the transmission axis in the polarizer and the display device according to the angular displacement of the polarizer.
  • the alignment between the edges of the reference position is used to adjust the angle of the alignment polarizer, so that the polarizer of any shape can realize the absorption axis or the transmission axis in the polarizer and the display device according to the angular displacement of the polarizer.
  • the invention solves the problem that the alignment of the non-rectangular polarizer is difficult in the alignment process of the existing polarizer, reduces the alignment difficulty in the alignment process of the non-rectangular polarizer, and improves the alignment of the polarizer. Accuracy guarantees the performance of the resulting display device.
  • An embodiment of the present invention provides a method for aligning, as shown in FIG. 9, the method includes the following steps:
  • the angular offset in this embodiment may be different from the positional offset or the distance offset, and specifically, the position of the arbitrary point or the preset point on the alignment polarizer in the mutually perpendicular x and y coordinate directions is determined.
  • the method includes the following steps:
  • the preset reference direction may be a direction in which the reference position side in the substrate is displayed, or may be a direction in which the optical axis of the polarization detecting sheet is located.
  • the predetermined rotation axis is the center point of the to-be-positioned polarizer.
  • the method includes the following steps:
  • step 302 can be implemented in the following manner:
  • the degree of offset of the to-be-positioned polarizer is confirmed based on the mapping relationship data between the previously stored light intensity and the angular offset.
  • step 302 is implemented in the following manner:
  • the angle between the optical axis direction of the polarization detecting sheet and the optical axis direction of the alignment polarizer is confirmed.
  • the angular offset amount of the to-be-positioned polarizer is confirmed based on the mapping relationship between the angle between the optical axis direction of the polarization-correcting polarizer and the optical axis direction of the alignment polarizer and the angular offset.
  • the optical axis direction of the alignment polarizer is the absorption axis direction of the to-be-positioned polarizer, and the detection bias is biased.
  • the optical axis direction of the light sheet is the absorption axis direction of the polarization detecting sheet; or, the optical axis direction of the alignment polarizer is the transmission axis direction of the polarization polarizer to be aligned, and the optical axis direction of the polarization detecting sheet is the detection bias The transmission axis direction of the light sheet.
  • the predetermined rotation axis is the center point of the to-be-positioned polarizer.
  • the method includes the following steps:
  • step 401 can be implemented in the following manner:
  • position adjustment of the alignment polarizer is performed by using the alignment mark on the alignment polarizer in mutually perpendicular X and Y directions.
  • Determining whether the coordinate information of the alignment polarizer and the coordinate information of the display substrate correspond if the coordinate information of the alignment polarizer and the coordinate information of the display substrate are corresponding, no position adjustment is performed; if the coordinates of the alignment polarizer are to be If the information does not correspond to the coordinate information of the display substrate, the position of the polarizer is adjusted, so that the coordinate information of the alignment polarizer and the coordinate information of the display substrate correspond to each other, and the position adjustment of the alignment polarizer is realized.
  • the predetermined rotation axis may be the center point of the to-be-positioned polarizer.
  • step 401 is described by taking step 401 as an example before step 402.
  • step 401 can also be performed after step 405; at this time, First, the step of detecting the intensity of the light transmitted through the alignment polarizer is performed, and then the subsequent steps are performed.
  • the order of execution of step 401 is determined based on actual design requirements.
  • the method includes the following steps:
  • step 501 can be implemented in the following manner:
  • position adjustment of the alignment polarizer is performed by using the alignment mark on the alignment polarizer in mutually perpendicular X and Y directions.
  • the intensity of the light passing through both the alignment polarizer and the polarization detecting polarizer is detected.
  • the angular offset of the alignment polarizer is confirmed according to the angle between the optical axis direction of the polarization detecting sheet and the optical axis direction of the alignment polarizer.
  • the predetermined rotation axis may be the center point of the to-be-positioned polarizer.
  • step 501 may also be performed after step 504; at this time, the step of rotating the analyzer polarizer or the to-be-positioned polarizer is first performed, and then the subsequent steps are performed.
  • step 401 is determined based on actual design requirements.
  • the position of the polarizer is finely adjusted according to the angular offset of the to-be-positioned polarizer in the plane of the to-be-positioned polarizer, so that Regardless of the shape of the polarizer, the alignment between the absorption axis or the transmission axis in the polarizer and the reference position edge in the display device can be achieved according to the angular offset of the polarizer, thereby solving the existing polarized light.
  • the problem of the alignment of the non-rectangular polarizer is difficult, the alignment difficulty in the alignment process of the non-rectangular polarizer is reduced, and the alignment accuracy of the polarizer is improved, and the obtained alignment is ensured. Shows the performance of the device.

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Abstract

一种对位设备及对位方法，该对位设备应用于偏光片的对位。该对位设备包括角度调整装置(1)。所述角度调整装置设置为(1)：根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整。该对位设备及对位方法降低了非矩形形状的偏光片的对位难度。

Description

对位设备及对位方法 技术领域
本发明的实施例涉及一种对位设备及对位方法。
背景技术
薄膜晶体管液晶显示器(Thin Film Transistor-Liquid Crystal Display，简称TFT-LCD)的工作原理是利用电场控制液晶分子的状态，从而控制背光源产生的光线能否通过液晶分子，以透过彩色滤光片各膜层进行彩色显示。这就要求在TFT-LCD的制造过程中，在贴附偏光片的时候，需要对偏光片进行对位。
在偏光片自动贴附工艺中，对于形状为矩形的偏光片的对位比较容易实现。对于圆形、正多边形等形状的偏光片的一种贴附方案是通过手工贴附来实现，另一种方案是采用在正方形的偏光片上制作出需要形状的偏光片，采用自动贴附工艺贴附完成后，再去除多余的偏光片。这两种形状为圆形或者正多边形等的偏光片的对位工艺中，第一种方案的对位精度较低，而且浪费人力和时间。第二种方案实现起来比较困难，操作复杂，甚至会损伤基板。
发明内容
根据本发明的实施例，提供一种对位设备。所述对位设备应用于偏光片的对位。所述对位设备包括角度调整装置。所述角度调整装置设置为：根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整。
例如，角度调整装置包括角度获取装置和角度补偿装置；所述角度获取装置设置为：获取所述角度偏移量；所述角度补偿装置设置为：根据所述角度偏移量，以预定的旋转轴心对所述待对位偏光片进行旋转调整，以减小或消除所述角度偏移量。
例如，所述角度获取装置包括：检偏器、光强检测装置和偏移角度确认装置；所述检偏器包含检偏偏光片；所述光强检测装置设置为：对既透过所 述待对位偏光片又透过所述检偏偏光片的光线的强度进行检测；所述偏移角度确认装置设置为：根据光强检测装置检测到的光线强度，确认所述待对位偏光片的所述角度偏移量。
例如，所述偏移角度确认装置根据预先存储的所述光线强度与所述角度偏移量之间的映射关系数据，确认所述待对位偏光片的所述角度偏移量。
例如，所述偏移角度确认装置设置为：根据光强检测装置检测到的光线强度，确认所述检偏偏光片的光轴方向与所述待对位偏光片的光轴方向之间的夹角，并根据预先存储的所述夹角与所述角度偏移量之间的映射关系数据确认所述待对位偏光片的所述角度偏移量。
例如，所述待对位偏光片的光轴方向为所述待对位偏光片的吸收轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的吸收轴方向；或，所述待对位偏光片的光轴方向为所述待对位偏光片的透过轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的透过轴方向。
例如，所述角度获取装置还包括第一旋转装置，所述第一旋转装置设置为：对所述检偏偏光片进行旋转；所述偏移角度确认装置是设置为：在所述第一旋转装置对所述检偏偏光片进行旋转的过程中，当检测的光线强度出现峰值时，根据所述检偏偏光片的光轴方向与所述待对位偏光片的光轴方向的夹角确认所述待对位偏光片的所述角度偏移量。
例如，所述预定的旋转轴心为所述待对位偏光片的中心点。
例如，所述对位设备还包括位置调整装置；所述位置调整装置设置为：在所述待对位偏光片所在平面内，在相互垂直的X方向和Y方向上对所述待对位偏光片进行位置调整。
例如，所述位置调整装置设置为：在所述待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用所述待对位偏光片上的对位标识对所述待对位偏光片进行位置调整。
根据本发明的实施例，提供一种对位方法，应用于偏光片的对位中。所述方法包括：根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整。
例如，所述根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整，包括：获取所述角度偏移量；根 据所述角度偏移量，以预定的旋转轴心对所述待对位偏光片进行旋转调整，以减小或消除所述角度偏移量。
例如，获得所述角度偏移量包括：对既透过所述待对位偏光片又透过检偏偏光片的光线的强度进行检测；根据检测到的光线强度，确认所述待对位偏光片的所述角度偏移量。
例如，所述根据检测到的光线强度，确认所述待对位偏光片的所述角度偏移量，包括：根据预先存储的所述光线强度与所述角度偏移量之间的映射关系数据，确认所述待对位偏光片的所述角度偏移量。
例如，所述根据检测到的光线强度，确认所述待对位偏光片的所述角度偏移量，包括：根据检测到的光线强度，确认所述检偏偏光片的光轴方向和所述待对位偏光片的光轴方向之间的夹角；根据所述检偏偏光片的光轴方向和所述待对位偏光片的光轴方向之间的夹角与所述角度偏移量之间的映射关系数据，确认所述待对位偏光片的角度偏移量。
例如，所述待对位偏光片的光轴方向为所述待对位偏光片的吸收轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的吸收轴方向；或，所述待对位偏光片的光轴方向为所述待对位偏光片的透过轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的透过轴方向。
例如，所述方法还包括：对所述检偏偏光片进行旋转；在对所述检偏偏光片进行旋转的过程中，当检测的光线强度出现峰值时，根据所述检偏偏光片的光轴方向与所述待对位偏光片的光轴方向的夹角确认所述待对位偏光片的所述角度偏移量。
例如，预定的旋转轴心为所述待对位偏光片的中心点。
例如，所述方法还包括：在所述待对位偏光片所在的平面内，在相互垂直的X方向和Y方向上对所述待对位偏光片进行位置调整。
例如，所述在所述对位偏光片所在的平面内，在相互垂直的X方向和Y方向上对所述待对位偏光片进行位置调整，包括：在所述待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用所述待对位偏光片上的对位标识对所述待对位偏光片进行位置调整。
附图说明
为了更清楚地说明本发明实施例的技术方案，下面将对实施例的附图作简单地介绍，显而易见地，下面描述中的附图仅仅涉及本发明的一些实施例，而非对本发明的限制。
图1为本发明的实施例提供的一种对位设备的结构示意图；
图2为本发明的实施例提供的另一种对位设备的结构示意图；
图3为本发明的实施例提供的又一种对位设备的结构示意图；
图4为本发明的实施例提供的再一种对位设备的结构示意图；
图5为本发明的实施例提供的再一种对位设备的结构示意图；
图6为本发明的实施例提供的再一种对位设备的结构示意图；
图7为本发明实施例提供的偏光片的结构示意图；
图8为本发明实施例提供的一种偏光片的对位过程示意图；
图9为本发明的实施例提供的一种对位方法的流程示意图；
图10为本发明的实施例提供的另一种对位方法的流程示意图；
图11为本发明的实施例提供的又一种对位方法的流程示意图；
图12为本发明的实施例提供的再一种对位方法的流程示意图；以及
图13为本发明的实施例提供的再一种对位方法的流程示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚，下面将结合附图，对本发明实施例的技术方案进行清楚、完整地描述。显然，所描述的实施例是本发明的一部分实施例，而不是全部的实施例。基于所描述的本发明的实施例，本领域普通技术人员在无需创造性劳动的前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明的实施例提供一种对位设备，该对位设备应用于偏光片的对位。参照图1所示，该对位设备包括：角度调整装置1。角度调整装置1，用于根据待对位偏光片在待对位偏光片所在平面内的角度偏移量，对待对位偏光片进行角度调整。
位置偏移或距离偏移可以是表征待对位偏光片与预期的位置之间的偏差的量。角度偏移可以是表征待对位偏光片与预期的角度之间的偏差的量。更具体地，位置偏移是指待对位偏光片上的任意点或预设点在相互垂直的x和 y两个坐标方向上的位置与预期的位置之间的偏差量；角度偏移是指待对位偏光片围绕任意的点或预设的点进行旋转(由于误差或其他操作时产生的旋转)后所产生的角度偏移，表现为待对位偏光片的实际光轴方向不符合预期的光轴方向。
在偏光片的对位过程中，例如可以在以待对位偏光片上任意点或设定的点为基准进行物理位置对位之前或之后，确认是否还存在角度偏移，如果存在角度偏移则以该任意点或者预设点为轴心进行旋转针对存在的角度偏移进行角度调整，使角度偏移量为零，即实现位置上和角度上都准确对位。如果不存在角度偏移则不作角度补偿的处理。
需要说明的是，本实施例仅描述了在偏光片所在的平面内进行对位和角度调整，但并不限定只能是在偏光片所在的平面内进行对位和角度调整。当然，本发明实施例提供的对位设备和对位方法也同样适用于在其他平面内进行对位和角度调整。
本实施例中并不特别限定角度调整装置的具体设备，只要是可以实现对应功能的设备均可以适用于本实施例中。
本发明的实施例提供的对位设备，该对位设备应用于偏光片的对位工艺中并包括角度调整装置，角度调整装置可以根据待对位偏光片在待对位偏光片所在平面内的角度偏移量，对待对位偏光片进行角度调整。这样，无论是什么形状的偏光片，都可以根据偏光片的角度偏移量，实现偏光片中的吸收轴或透过轴与显示装置中的基准位置边之间的对位，解决了现有的偏光片的对位工艺中对于非矩形的偏光片的对位困难的问题，降低了非矩形形状的偏光片对位过程中的对位难度，提高了偏光片的对位精度，保证了得到的显示器件的性能。
例如，参照图2中所示，角度调整装置1包括：角度获取装置11和角度补偿装置12。
角度获取装置11设置为获取角度偏移量。
获取角度偏移量的方式可以有多种，例如获取待对位偏光片的光轴方向和预设基准方向之间的夹角从而获得角度偏移量。预设基准方向可以是显示基板中基准位置边的方向，或者可以直接将下述的检偏偏光片的光轴所在的方向作为预设基准方向，亦或者是在其他的位置处设置的一条直线，直线的 方向作为该预设基准方向。
角度补偿装置12，设置为根据角度偏移量，以预定的旋转轴心对待对位偏光片进行旋转调整，以减小或消除角度偏移量。优选地，当然是旋转调整的量(即补偿量)正好抵消角度偏移量，可达到最优的角度偏移纠正的效果。
例如，预定的旋转轴心为待对位偏光片的中心点。
角度获取装置11的输出端与角度补偿装置12的输入端相连。
例如，参照图3所示，角度获取装置11包括：检偏器111、光强检测装置112和偏移角度确认装置113。
检偏器111的输出端与光强检测装置112的输入端相连。
光强检测装置112的输出端与偏移角度确认装置113的输入端相连。
例如，检偏器111包含检偏偏光片。
光强检测装置112，设置为对既透过待对位偏光片又透过检偏偏光片的光线的强度进行检测。
偏移角度确认装置113，设置为根据光强检测装置112检测到的光线强度，确认待对位偏光片的角度偏移量。
例如，检偏器可以设置在待对位偏光片的上方或者下方；或者，检偏器可以设置在待对位偏光片的右侧或者左侧。需要说明的是，本实施例中只是举例说明检偏器的位置，但并不限定只能是这些位置。在实际的设计中，只要是可以实现检偏器的功能的位置均可以适用。
光强检测装置可以检测接收到的经过待对位偏光片和检偏器后的偏转光线的强度，并将得到的偏转光线的光线强度发送至偏移角度确认装置，则偏移角度确认装置可以光线的强度确定待对位偏光片的光轴方向与预设基准方向之间的角度偏移量。
例如，参照图4中所示，角度获取装置11还包括：光源114。光源114，用于发射光线至待对位偏光片。例如，待对位偏光片位于光源114和检偏器111之间。
光源114可以是自然光源、圆偏振光光源、椭圆偏振光光源、部分偏振光光源或者线偏振光光源。需要说明的是，如果光源是线偏振光光源可以通过多次对线偏振光光源进行旋转调整实现技术方案并达到需要的技术效果，当然不进行旋转的话，通过相应的不同光强和光轴之间的映射关系，也可以 达到相应的技术效果。当然，本实施例中优选地采用圆偏光光源，此时无须对光源进行旋转调整，较为简便，相应地得到的结果准确度也较高。
示例性的，光源可以设置在待对位偏光片的下方或者上方，相对应的，检偏器可以设置在待对位偏光片的上方或者下方；或者，光源也可以设置在待对位偏光片的左侧或者右侧，相对应的，检偏器可以设置在待对位偏光片的右侧或者左侧。需要说明的是，本实施例中只是举例说明光源和检偏器的位置，但并不限定只能是这些位置。在实际的设计中，只要是可以实现光源和检偏器的功能的位置均可以适用。
例如，偏移角度确认装置113根据预先存储的光线强度与角度偏移量之间的映射关系数据，确认待对位偏光片的角度偏移量。
例如，偏移角度确认装置113设置为：根据光强检测装置112检测到的光线强度，确认检偏偏光片的光轴方向与待对位偏光片的光轴方向之间的夹角，并根据预先存储的所述夹角与所述角度偏移量之间的映射关系数据确认待对位偏光片的角度偏移量。
例如，待对位偏光片的光轴方向为待对位偏光片的吸收轴方向，检偏偏光片的光轴方向为检偏偏光片的吸收轴方向；或，待对位偏光片的光轴方向为待对位偏光片的透过轴方向，检偏偏光片的光轴方向为检偏偏光片的透过轴方向。
例如，待对位偏光片的光轴方向与检偏偏光片的光轴方向之间的夹角即为待对位偏光片的角度的偏移量，待对位偏光片的光轴方向与检偏偏光片的光轴方向之间的夹角越大，待对位偏光片的角度的偏移量越大；待对位偏光片的光轴方向与检偏偏光片的光轴方向之间的夹角越小，待对位偏光片的角度的偏移量越小。一种可行的实现方案是确认待对位偏光片的光轴方向与检偏偏光片的光轴方向之间的夹角后，移动待对位偏光片使得待对位偏光片的光轴方向与检偏偏光片的光轴方向之间的夹角为零，则可以实现待对位偏光片的准确对位。
上述光轴方向的设定方式，对于角度偏移量的获取过程来说较为高效简便，获得的数值准确度也较高。当然可以不受上述方式限定，例如当待对位偏光片的吸收轴方向作为其所述光轴方向，而检偏偏光片的透过轴方向作为其所述光轴方向时，也是可以达到预期的技术效果的，只需把吸收轴方向和 透过轴方向是垂直的这一因素考虑进去即可。
例如，参照图5所示，角度获取装置11还包括：第一旋转装置115。
第一旋转装置115设置为对检偏偏光片进行旋转；当然也可以设置为对待对位偏光片进行旋转。
偏移角度确认装置113设置为：在第一旋转装置115对检偏偏光片进行旋转的过程中，当检测的光线强度出现峰值时，再根据检偏偏光片的光轴方向与待对位偏光片的光轴方向的夹角确认待对位偏光片的角度偏移量。这样的话，就无须使用光线强度与角度偏移量之间的映射关系数据，或夹角与角度偏移量之间的映射关系数据，只需等到出现上述峰值时，就可直接确认检偏偏光片的光轴方向与待对位偏光片的光轴方向的夹角(同采用吸收轴或同采用透过轴时，出现峰值时两轴夹角为零度；一个采用吸收轴另一采用透过轴时，出现峰值时两轴夹角为90度)，再根据这个夹角就可以很方便地直接确定角度偏移量；该方案在实现上较为简便。
例如，当旋转待对位偏光片并检测到光线强度出现峰值时，说明待对位偏光片的光轴方向与检偏偏光片的光轴方向之间的夹角为零，待对位偏光片的角度偏移量为零，此时对待对位偏光片的角度补偿为零度，即无须转动。
第一旋转装置115示例性的可以包括：机械夹持手臂、旋转台、开关等部件。
第一旋转装置可以根据接收到的信息和预先存储的信息判断是否让偏光片转动，使得偏光片最终的位置在满足条件的位置上。
例如，参照图6所示，对位设备还包括：位置调整装置2。
位置调整装置2设置为：在待对位偏光片所在平面内，在相互垂直的X方向和Y方向上对待对位偏光片进行位置调整。
例如，位置调整装置2设置为：在待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用待对位偏光片上的对位标识对待对位偏光片进行位置调整。
位置调整装置可以是在角度调整装置对待对位偏光片进行角度调整之前对待对位偏光片进行位置调整。当然，也可以是在角度调整装置对待对位偏光片进行角度调整之后对待对位偏光片进行位置调整。本实施例图6中只是示例性的说明位置调整装置和角度调整装置之间的连接关系，并不唯一的限 定只能是如此，在具体的应用中可以根据实际设计的需求再决定位置调整装置和角度调整装置之间的先后顺序。
需要说明的是，本实施例中一种可行的实现方案是在对待对位偏光片进行角度调整之前，先对待对位偏光片进行位置调整。可以通过判断待对位偏光片所在位置的坐标与显示基板所在位置的坐标是否相对应来进行判断；若待对位偏光片的位置与显示基板的位置不对应则调整待对位偏光片的位置，若待对位偏光片的位置与显示基板的位置相对应，则不作任何处理。经过位置调整之后再对待对位偏光片进行角度调整，可以极大的提高对位效率和对位精度。
如图7中所示，若偏光片的形状为矩形则采用现有技术中提供的对位方法进行偏光片的对位，如果出现对位偏差则可以很容易的分辨出对位不准确进而进行准确对位。但是若偏光片的形状为正多边形或者圆形，参照图7中所示，即使出现偏光片对位不准确，采用现有技术中的对位方法根本无法得知对位出现偏差，使得最终形成的显示装置中的偏光片的对位精度较差，影响显示器件的性能。但是采用本发明实施例中提供的对位方法后，可以保证偏光片的对位精度。参照图8，示例性的以待对位偏光片的形状为圆形进行说明：先获取一需要对位的偏光片，然后通过光源照射该偏光片后发送信息至角度获取装置，角度获取装置判断是否该偏光片需要偏转，然后发送数据信息至第一旋转装置，第一旋转装置根据反馈的数据信息对该偏光片进行角度旋转，得到对位精度准确的偏光片，之后将该偏光片贴附到相应的显示装置中，偏光片的对位工艺完成。其中，图中箭头方向表示为偏光片的吸收轴或者透过轴方向。
本发明的实施例提供的对位设备，该对位设备应用于偏光片的对位工艺，包括：角度调整装置，角度调整装置可以根据待对位偏光片在待对位偏光片所在平面内的角度偏移量，对待对位偏光片进行角度调整，这样无论是什么形状的偏光片，都可以根据偏光片的角度偏移量，实现偏光片中的吸收轴或透过轴与显示装置中的基准位置边之间的对位。解决了现有的偏光片的对位工艺中，对于非矩形的偏光片的对位困难的问题，降低了非矩形形状的偏光片对位过程中的对位难度，提高了偏光片的对位精度，保证了得到的显示器件的性能。
本发明的实施例提供一种对位方法，参照图9所示，该方法包括以下步骤：
101、根据待对位偏光片在待对位偏光片所在平面内的角度偏移量，对待对位偏光片进行角度调整。
本实施例中的角度偏移可以是与位置偏移或距离偏移不同，具体是指待对位偏光片上的任意点或预设点在相互垂直的x和y坐标方向上的位置都确定之后，待对位偏光片围绕这个点进行旋转时所产生的角度偏移。
需要说明的是，上述步骤的解释可以参照本实施例中的上述实施例中的描述，此处不再赘述。
进一步地，参照图10所示，该方法包括以下步骤：
201、获取角度偏移量。
预设基准方向可以是显示基板中基准位置边的方向，或者可以是检偏偏光片的光轴所在的方向。
202、根据角度偏移量，以预定的旋转轴心对待对位偏光片进行旋转调整，以减小或消除角度偏移量。
例如，预定的旋转轴心为待对位偏光片的中心点。
需要说明的是，上述步骤的解释可以参照本发明中上述实施例中的描述，此处不再赘述。
进一步地，参照图11所示，该方法包括以下步骤：
301、对既透过待对位偏光片又透过检偏偏光片的光线的强度进行检测。
302、根据检测到的光线强度，确认待对位偏光片的角度偏移量。
例如，步骤302可以通过以下方式来实现：
根据预先存储的光线强度与角度偏移量之间的映射关系数据，确认待对位偏光片的度偏移量。
或者，通过以下方式来实现步骤302：
根据检测到的光线强度，确认检偏偏光片的光轴方向和待对位偏光片的光轴方向之间的夹角。
根据检偏偏光片的光轴方向和待对位偏光片的光轴方向之间的夹角与角度偏移量之间的映射关系数据，确认待对位偏光片的角度偏移量。
例如，待对位偏光片的光轴方向为待对位偏光片的吸收轴方向，检偏偏 光片的光轴方向为检偏偏光片的吸收轴方向；或，待对位偏光片的光轴方向为待对位偏光片的透过轴方向，检偏偏光片的光轴方向为检偏偏光片的透过轴方向。
303、根据角度偏移量，以预定的旋转轴心对待对位偏光片进行旋转调整，以减小或消除角度偏移量。
例如，预定的旋转轴心为待对位偏光片的中心点。
需要说明的是，上述步骤的解释可以参照上述实施例中的描述，此处不再赘述。
进一步地，参照图12所示，该方法包括以下步骤：
401、在待对位偏光片所在的平面内，在相互垂直的X方向和Y方向上对待对位偏光片进行位置调整。
例如，步骤401可以通过以下方式来实现：
在待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用待对位偏光片上的对位标识对待对位偏光片进行位置调整。
判断待对位偏光片的坐标信息和显示基板的坐标信息是否相对应，若待对位偏光片的坐标信息和显示基板的坐标信息相对应则不做位置调整；若待对位偏光片的坐标信息和显示基板的坐标信息不对应，则调整偏光片的位置，使得待对位偏光片的坐标信息和显示基板的坐标信息相对应，实现待对位偏光片的位置调整。
402、对既透过待对位偏光片又透过检偏偏光片的光线的强度进行检测。
403、根据检测到的光线强度，确认检偏偏光片的光轴方向和待对位偏光片的光轴方向之间的夹角。
404、根据检偏偏光片的光轴方向和待对位偏光片的光轴方向之间的夹角与角度偏移量之间的映射关系数据，确认待对位偏光片的角度偏移量。
405、根据角度偏移量，以预定的旋转轴心对待对位偏光片进行旋转调整，以减小或消除角度偏移量。
例如，预定的旋转轴心可以为待对位偏光片的中心点。
需要说明的是，本实施例中的相应步骤的解释可以参照本发明中的上述实施例中的描述，此处不再赘述。本实施例只是以步骤401在步骤402之前执行为例进行说明。当然，步骤401也可以是在步骤405之后执行的；此时， 首先执行对透过待对位偏光片的光线的强度进行检测的步骤，然后执行后续的步骤。在具体的应用中，步骤401的执行顺序以实际的设计需求为依据来确定。
进一步地，参照图13所示，该方法包括以下步骤：
501、在待对位偏光片所在的平面内，在相互垂直的X方向和Y方向上对待对位偏光片进行位置调整。
例如，步骤501可以通过以下方式来实现：
在待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用待对位偏光片上的对位标识对待对位偏光片进行位置调整。
502、对检偏偏光片进行旋转。
503、在对检偏偏光片进行旋转的过程中，对既透过待对位偏光片又透过检偏偏光片的光线的强度进行检测。当检测的光线强度出现峰值时，根据检偏偏光片的光轴方向与待对位偏光片的光轴方向的夹角确认待对位偏光片的角度偏移量。
504、根据角度偏移量，以预定的旋转轴心对待对位偏光片进行旋转调整，以减小或消除角度偏移量。
例如，预定的旋转轴心可以为待对位偏光片的中心点。
需要说明的是，本实施例中的相应步骤的解释可以参照本发明中的上述实施例中的描述，此处不再赘述。本实施例只是以步骤501在步骤502之前执行为例进行说明。当然，步骤501也可以是在步骤504之后执行的；此时，首先执行对检偏偏光片或待对位偏光片进行旋转的步骤，然后执行后续的步骤。在具体的应用中，步骤401的执行顺序以实际的设计需求为依据来确定。
本发明的实施例提供的对位方法，在偏光片的对位工艺中，根据待对位偏光片在待对位偏光片所在平面内的角度偏移量对偏光片的位置进行精细调整，这样无论是什么形状的偏光片，都可以根据偏光片的角度偏移量，实现偏光片中的吸收轴或透过轴与显示装置中的基准位置边之间的对位，解决了现有的偏光片的对位工艺中，对于非矩形的偏光片的对位困难的问题，降低了非矩形形状的偏光片对位过程中的对位难度，提高了偏光片的对位精度，保证了得到的显示器件的性能。
以上所述仅是本发明的示范性实施方式，而非用于限制本发明的保护范 围，本发明的保护范围由所附的权利要求确定。
本申请要求于2014年12月30日递交的第201410844035.3号中国专利申请的优先权，在此全文引用上述中国专利申请公开的内容以作为本申请的一部分。

Claims (20)

  1. 一种对位设备，所述对位设备应用于偏光片的对位，其中
    所述对位设备包括角度调整装置；
    所述角度调整装置设置为：根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整。
  2. 根据权利要求1所述的对位设备，其中
    角度调整装置包括角度获取装置和角度补偿装置；
    所述角度获取装置设置为：获取所述角度偏移量；
    所述角度补偿装置设置为：根据所述角度偏移量，以预定的旋转轴心对所述待对位偏光片进行旋转调整，以减小或消除所述角度偏移量。
  3. 根据权利要求2所述的对位设备，其中
    所述角度获取装置包括：检偏器、光强检测装置和偏移角度确认装置；
    所述检偏器包含检偏偏光片；
    所述光强检测装置设置为：对既透过所述待对位偏光片又透过所述检偏偏光片的光线的强度进行检测；
    所述偏移角度确认装置设置为：根据光强检测装置检测到的光线强度，确认所述待对位偏光片的所述角度偏移量。
  4. 根据权利要求3所述的对位设备，其中所述偏移角度确认装置根据预先存储的所述光线强度与所述角度偏移量之间的映射关系数据，确认所述待对位偏光片的所述角度偏移量。
  5. 根据权利要求3所述的对位设备，其中所述偏移角度确认装置设置为：根据光强检测装置检测到的光线强度，确认所述检偏偏光片的光轴方向与所述待对位偏光片的光轴方向之间的夹角，并根据预先存储的所述夹角与所述角度偏移量之间的映射关系数据确认所述待对位偏光片的所述角度偏移量。
  6. 根据权利要求5所述的对位设备，其中
    所述待对位偏光片的光轴方向为所述待对位偏光片的吸收轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的吸收轴方向；
    或，所述待对位偏光片的光轴方向为所述待对位偏光片的透过轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的透过轴方向。
  7. 根据权利要求3或5所述的对位设备，其中
    所述角度获取装置还包括第一旋转装置，所述第一旋转装置设置为：对所述检偏偏光片进行旋转；
    所述偏移角度确认装置是设置为：在所述第一旋转装置对所述检偏偏光片进行旋转的过程中，当检测的光线强度出现峰值时，根据所述检偏偏光片的光轴方向与所述待对位偏光片的光轴方向的夹角确认所述待对位偏光片的所述角度偏移量。
  8. 根据权利要求2所述的对位设备，其中
    所述预定的旋转轴心为所述待对位偏光片的中心点。
  9. 根据权利要求1所述的对位设备，其中
    所述对位设备还包括位置调整装置；
    所述位置调整装置设置为：在所述待对位偏光片所在平面内，在相互垂直的X方向和Y方向上对所述待对位偏光片进行位置调整。
  10. 根据权利要求9所述的对位设备，其中
    所述位置调整装置设置为：在所述待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用所述待对位偏光片上的对位标识对所述待对位偏光片进行位置调整。
  11. 一种对位方法，应用于偏光片的对位中，其中
    所述方法包括：根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整。
  12. 根据权利要求11所述的方法，其中所述根据待对位偏光片在所述待对位偏光片所在平面内的角度偏移量，对所述待对位偏光片进行角度调整，包括：
    获取所述角度偏移量；
    根据所述角度偏移量，以预定的旋转轴心对所述待对位偏光片进行旋转调整，以减小或消除所述角度偏移量。
  13. 根据权利要求12所述的方法，其中获得所述角度偏移量包括：
    对既透过所述待对位偏光片又透过检偏偏光片的光线的强度进行检测；
    根据检测到的光线强度，确认所述待对位偏光片的所述角度偏移量。
  14. 根据权利要求13所述的方法，其中所述根据检测到的光线强度，确 认所述待对位偏光片的所述角度偏移量，包括：
    根据预先存储的所述光线强度与所述角度偏移量之间的映射关系数据，确认所述待对位偏光片的所述角度偏移量。
  15. 根据权利要求13所述的方法，其中所述根据检测到的光线强度，确认所述待对位偏光片的所述角度偏移量，包括：
    根据检测到的光线强度，确认所述检偏偏光片的光轴方向和所述待对位偏光片的光轴方向之间的夹角；
    根据所述检偏偏光片的光轴方向和所述待对位偏光片的光轴方向之间的夹角与所述角度偏移量之间的映射关系数据，确认所述待对位偏光片的角度偏移量。
  16. 根据权利要求15所述的方法，其中
    所述待对位偏光片的光轴方向为所述待对位偏光片的吸收轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的吸收轴方向；
    或，所述待对位偏光片的光轴方向为所述待对位偏光片的透过轴方向，所述检偏偏光片的光轴方向为所述检偏偏光片的透过轴方向。
  17. 根据权利要求13或15所述的方法，其中所述方法还包括：
    对所述检偏偏光片进行旋转；
    在对所述检偏偏光片进行旋转的过程中，当检测的光线强度出现峰值时，根据所述检偏偏光片的光轴方向与所述待对位偏光片的光轴方向的夹角确认所述待对位偏光片的所述角度偏移量。
  18. 根据权利要求12所述的方法，其中
    预定的旋转轴心为所述待对位偏光片的中心点。
  19. 根据权利要求11所述的方法，其中所述方法还包括：
    在所述待对位偏光片所在的平面内，在相互垂直的X方向和Y方向上对所述待对位偏光片进行位置调整。
  20. 根据权利要求19所述的方法，其中所述在所述对位偏光片所在的平面内，在相互垂直的X方向和Y方向上对所述待对位偏光片进行位置调整，包括：
    在所述待对位偏光片所在平面内，在相互垂直的X方向和Y方向上利用所述待对位偏光片上的对位标识对所述待对位偏光片进行位置调整。
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