WO2013078730A1 - 液晶显示面板偏光板的自动撕除机、自动撕角装置与方法 - Google Patents

液晶显示面板偏光板的自动撕除机、自动撕角装置与方法 Download PDF

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Publication number
WO2013078730A1
WO2013078730A1 PCT/CN2011/083728 CN2011083728W WO2013078730A1 WO 2013078730 A1 WO2013078730 A1 WO 2013078730A1 CN 2011083728 W CN2011083728 W CN 2011083728W WO 2013078730 A1 WO2013078730 A1 WO 2013078730A1
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WO
WIPO (PCT)
Prior art keywords
tearing
polarizing plate
liquid crystal
crystal display
display panel
Prior art date
Application number
PCT/CN2011/083728
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English (en)
French (fr)
Inventor
卢嘉圣
尹德胜
Original Assignee
深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US13/380,860 priority Critical patent/US8756783B2/en
Publication of WO2013078730A1 publication Critical patent/WO2013078730A1/zh
Priority to US14/274,678 priority patent/US9314887B2/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B38/00—Ancillary operations in connection with laminating processes
    • B32B38/10—Removing layers, or parts of layers, mechanically or chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2457/00—Electrical equipment
    • B32B2457/20—Displays, e.g. liquid crystal displays, plasma displays
    • B32B2457/202—LCD, i.e. liquid crystal displays
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • 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

  • the present invention relates to the field of liquid crystal display technology, and more particularly to an apparatus and method for tearing off a polarizing plate in a liquid crystal display process.
  • the polarizing plate is an important component of the thin film transistor liquid crystal display, and the sticking process attached to the thin film transistor liquid crystal display panel has an important influence on the product performance of the liquid crystal display. In fact, there may be problems with poor placement in the process of polarizing plate placement. If you want to pay for rework, you need to remove the poorly polarized polarizing plate from the surface of the LCD panel.
  • the current tearing methods include manual tearing and semi-automatic tearing. The risk of fragmentation is high, the time required is long, and the liquid crystal display panel is easily scratched, and the problem of large-size liquid crystal display panels is particularly serious. Another method is semi-automatic tearing.
  • the corner of the polarizing plate is manually peeled off first, and then the polarizing plate is removed by using an automatic instrument with a roller. Since the corner of the polarizing plate is manually removed, the quality of the tearing angle is Good or bad directly affects the success rate, and manual operation is difficult to control this point. In addition, involving personnel entering the equipment, there will be corresponding risks related to work safety.
  • the technical problem to be solved by the present invention is to provide an automatic tearing machine and an automatic tearing device and method for a polarizing plate of a liquid crystal display panel, which can realize a full-automatic polarizing plate tearing operation, can reduce work injuries, and improve the tearing off of the polarizing plate. Success rate and efficiency.
  • a technical solution adopted by the present invention is to provide an automatic tearing device suitable for a polarizing plate tearing process in a manufacturing process of a liquid crystal display panel, the automatic tearing device comprising a front clip and a rear clip and At least one sensor.
  • the front clip includes a long arm and a short arm, and the long arm and the short arm intersect in a substantially "L" shape; the rear clip is spaced apart from the front clip and can be engaged with the front clip; the sensor is disposed at The front clip or the rear clip is used to sense whether the polarizing plate is successfully torn.
  • an automatic tearing machine for a polarizing plate of a liquid crystal display panel comprising: an automatic tearing device, the automatic tearing device comprising a front clip, a rear clip and at least A sensor.
  • the front clip includes a long arm and a short arm, and the long arm and the short arm intersect in a substantially "L" shape; the rear clip is spaced apart from the front clip and can be engaged with the front clip; the sensor is disposed at The front clip or the rear clip is used to sense whether the polarizing plate is successfully torn or not; the base is removed, and the liquid crystal display panel waiting to tear off the polarizing plate is carried; the front roller is removed and the roller is removed, and when the polarizing plate is performed When the tearing operation is performed, the automatic tearing device automatically completes the tearing operation and clamps the polarizing plate which is torn at a corner, and the tearing roller rotates in the opposite direction, and at the same time, the automatic tearing device cooperates with the tearing speed to increase And the forward movement, tearing off the abutment also advances, and the complete tearing operation of the polarizing plate is realized.
  • another technical solution adopted by the present invention is to provide a method for automatically tearing off a polarizing plate of a liquid crystal display panel, comprising: placing a liquid crystal display panel on a base; and facing the liquid crystal display panel on the base Positioning; automatically tearing the liquid crystal display panel; after automatically tearing the liquid crystal display panel, the polarizing plate of the liquid crystal display panel is automatically peeled off.
  • the invention has the beneficial effects that the invention realizes the automatic tearing operation of the polarizing plate by the precise fitting of the two angles and the automatic monitoring of the tearing state of the polarizing plate by the sensor. Furthermore, the automatic polarizing plate tearing operation can be realized, the work injury can be reduced, the success rate of tearing off the polarizing plate can be improved, the reuse rate of the liquid crystal display panel can be improved, and the efficiency of tearing off the polarizing plate can be improved.
  • FIG. 1 is a schematic structural view of an embodiment of an automatic tearing machine for a polarizing plate of a liquid crystal display panel of the present invention
  • FIG. 2 is a schematic structural view of an embodiment of an automatic tearing device for a polarizing plate of a liquid crystal display panel according to the present invention
  • FIG. 3 is a flow chart of the present invention for automatically tearing off the liquid crystal display panel polarizing plate by using the automatic tearing machine shown in FIG. 1;
  • step S102 in FIG. 3 is a specific operation flowchart of step S102 in FIG. 3;
  • FIG. 5 is a specific operation flowchart of step S103 in FIG. 3;
  • FIG. 6 is a specific operation flowchart of step S104 in Figure 3;
  • FIG. 7 is a schematic structural view of a liquid crystal display panel of the present invention placed on a tearing abutment
  • Figure 8 is a schematic view showing the structure of the vacuum ablation operation of the tearing abutment according to the present invention.
  • FIG. 9 is a schematic view showing the structure of determining a position of a corner of a polarizing plate using a charge coupler according to the present invention.
  • Figure 10 is a schematic view showing the structure of the automatic tearing device according to the present invention.
  • Figure 11 is a schematic view showing the structure of the automatic tearing device of the present invention after being positioned near the edge of the polarizing plate;
  • Figure 12 is a schematic view showing the structure of the automatic tearing device of the present invention near the edge of the polarizing plate;
  • Figure 13 is a schematic view showing the structure of the automatic tearing device of the present invention tearing off a corner of the liquid crystal display panel;
  • Figure 14 is a schematic structural view showing the completion of the rising tear angle of the automatic tearing device of the present invention.
  • Figure 15 is a schematic view showing the structure of the automatic tearing device of the present invention.
  • Figure 16 is a schematic view showing the structure of the polarizing plate which is peeled off by the internal pressure of the roller in the present invention
  • Figure 17 is a schematic view showing the structure of the tearing roller of the present invention and tearing off the abutment
  • Fig. 18 is a schematic view showing the structure in which the airflow hole of the present invention is blown and the polarizing plate is naturally dropped.
  • FIG. 1 is a schematic structural view of an embodiment of an automatic tearing machine for a polarizing plate of a liquid crystal display panel according to the present invention.
  • the automatic tear-off machine includes an automatic tear-off device 200, a tear-off base 202, and a front tear-off roller 203 and a rear tear-off roller 204.
  • the tear-off base 202 is used to carry a predetermined liquid crystal display panel waiting to perform the work of tearing off the polarizing plate.
  • the automatic tearing device 200 includes a front clip 101 and a rear clip 102 and at least one sensor 103 disposed on the front clip or the rear clip.
  • the rear clip 102 is spaced apart from the front clip 101 and can be engaged with the front clip 101 for a gripping action.
  • the front clip 101 is formed by a combination of a long arm 108 and a short arm 109, and the long arm 108 and the short arm 109 intersect in a substantially "L" shape.
  • the short arm 108 is disposed in a tapered shape with a pointed corner (not shown) adjacent to the rear clip 102.
  • the back clip 102 is provided with a chamfer (not shown) near the corner of the short arm 109, and the chamfer plane is parallel with the oblique plane of the chamfered corner, so that the liquid crystal display panel is clamped.
  • the front clip 101 can be lifted and lowered separately, and the front clip 101 can also be raised and lowered simultaneously with the rear clip 102 and can be moved left and right at the same time.
  • the current clip 101 performs a tearing operation on the polarizing plate (refer to FIG. 11 to FIG. 18)
  • the rear clip 102 cooperates with the front clip 101, and the polarizing plate is clamped to complete the tearing action.
  • the at least one sensor 103 is disposed on the front clip 101 at a position where the long arm 108 and the short arm 109 intersect and is close to the rear clip for determining the distance between the front clip 101 and the polarizing plate, and determining the front clip. 101
  • the size of the force is used to sense whether the polarizing plate is successfully torn.
  • the at least one sensor 103 may be disposed on a side of the chamfer near a position where the short arm 109 intersects the long arm 108, or may be disposed at other positions of the front clip 101 or the rear clip 102, or may be independent It is provided separately from the front clip 101 or the rear clip 102.
  • a plurality of sensors may be separately disposed at the above positions.
  • a surface of the front clip 101 and the rear clip 102 are respectively disposed with a release layer 104 for preventing the polarizing plate from adhering to the front clip 101 or the rear clip 102.
  • the material of the release layer 104 is a flexible material to prevent Destroy the polarizing plate or the liquid crystal display panel.
  • a buffer layer 105 is disposed at the bottom of the front clip 101 and the rear clip 102, respectively, for pressing the liquid crystal display panel when the tearing is torn.
  • the bottom of the front clip 101 or the rear clip 102 is horizontally smooth, and the material of the buffer layer 105 is a flexible material to prevent damage to the liquid crystal display panel.
  • An airflow hole 106 is disposed on the inner side of the front clamp 101 or the rear clamp 102 adjacent to each other for blowing a high-pressure airflow to prevent the polarizing plate from sticking to the front clamp or the rear clamp, and the flow velocity of the high-pressure airflow in the airflow hole 106 just blows off the polarizing plate. It is appropriate.
  • a charge coupler 107 is disposed on the front clip 101 or the rear clip 102.
  • the charge coupler 107 can also be independent of the front clip.
  • the 101 and rear clips 102 are separately provided.
  • the liquid crystal display panel When performing the tearing operation of the polarizing plate (not shown), the liquid crystal display panel is placed on the tear-off base 202, and the automatic tearing device 200 automatically completes the tearing operation and clamps the polarized plate which is torn at a corner, and tears the front
  • the roller 203 and the rear tear-off roller 204 rotate in opposite directions.
  • the automatic tearing device 200 cooperates with the tearing speed to perform the ascending and forward movement, and the tear-off base 202 also advances simultaneously, thereby realizing the polarizing plate. Completely tear off the job.
  • FIG. 3 is a flow chart of an embodiment of a fully automatic tear-off liquid crystal display panel polarizing plate. include:
  • Step S101 placing a liquid crystal display panel on the base.
  • the liquid crystal display panel is transported to the front end of the tear-off abutment, and the liquid crystal display panel maintains the orientation before the original upload.
  • Step S102 positioning the liquid crystal display panel on the base.
  • FIG. 4 is a flow chart of positioning the liquid crystal display panel during the process of peeling off the polarizing plate of the liquid crystal display panel.
  • Step S201 The liquid crystal display panel is placed on the tearing abutment.
  • the position of the liquid crystal display panel 301 on the tear-off base 202 is determined by the alignment mark on the liquid crystal display panel 301, and the pair is realized. The entire operation of the liquid crystal display panel 301.
  • Step S202 performing a vacuum suction operation on the tearing base and rotating the angle of 45 degrees.
  • the liquid crystal display panel 301 is placed on the tear-off base 202 , the liquid crystal display panel 301 is tightly adsorbed on the tear-off base 202 by the vacuum suction device; after the adsorption operation is completed, the liquid crystal display is performed.
  • the panel 301 and the tear-off base 202 are rotated by 45 degrees together, and the rotation direction may be clockwise or counterclockwise.
  • Step S203 determining the position of the corner of the polarizing plate using the charge coupler to determine the position of the corner to be removed.
  • the corner of the polarizing plate 302 which requires the tearing angle of the liquid crystal display panel 301 is determined, and the position of the corner is determined. After determining to remove the corner position, the precise coordinate information of the corner to be removed is obtained by the capture of the computer image and the accurate calculation of the computer.
  • Step S204 Perform precise positioning on the automatic tearing device.
  • the automatic tearing device (not shown) is moved to position the automatic tearing device.
  • Step S103 performing automatic tearing of the liquid crystal display panel.
  • FIG. 5 is a flow chart of automatically tearing the liquid crystal display panel during the process of tearing off the polarizing plate of the liquid crystal display panel.
  • Step S301 The automatic tearing device is close to the edge of the polarizing plate.
  • the rear clip 102 of the automatic tearing device 200 is fixed relative to the polarizing plate 302, and the front clip 101 is moved until the front clip 101 is moved.
  • the sharp corner of the short arm 109 hits the corner of the polarizing plate 302 to be peeled off.
  • Step S302 The automatic tearing device tears a corner of the liquid crystal display panel.
  • the front clip 101 continues to move in the direction of the rear clip 102.
  • the rear clip 102 cooperates with the front clip 101 to perform a tearing operation on the polarizing plate 302.
  • Step S303 the automatic tearing device is raised, and the tearing angle is completed.
  • the automatic tearing device 200 is raised to complete the tearing operation of the polarizing plate 302 on the liquid crystal display panel.
  • Step S104 After the automatic tearing of the liquid crystal display panel is completed, the polarizing plate of the liquid crystal display panel is automatically peeled off.
  • FIG. 6 is a flow chart of automatically tearing off the polarizing plate during the process of tearing off the polarizing plate of the liquid crystal display panel.
  • Step S401 the automatic tearing device is raised, the internal pressure of the roller is removed, and the torn polarizing plate is pressed.
  • the automatic tearing device 200 completes the tearing operation of the polarizing plate 302.
  • the roller 203 and the rear tearing roller 204 are removed, so that the polarizing plate 302 is located at the front tearing roller 203. And after tearing off the roller 204.
  • the front tear-off roller 203 and the rear tear-off roller 204 press the tear-off polarizing plate 302.
  • the front tear-off roller 203 and the rear tear-off roller 204 are provided with a flexible material to prevent damage to the polarizing plate 302.
  • Step S402 tearing off the rotation of the roller, tearing off the front of the base, and automatically tearing off the corner device to perform tearing.
  • the front tearing roller 203 and the rear tearing roller 204 rotate with each other, and the direction of rotation is opposite.
  • the front tearing roller 203 can be actively rotated, and the rear tearing roller 204 can be driven. Rotation; the front tear-off roller 203 can be driven to rotate, and the rear tear-off roller 204 can be actively rotated; and the front tear-off roller 203 and the rear tear-off roller 204 can also be actively rotated.
  • the automatic tearing device 200 and the tearing base 202 cooperate to move and tear off.
  • Step S403 the tearing is completed, the airflow hole is blown, and the polarizing plate is naturally dropped.
  • the front clip 101 and the rear clip 102 of the automatic tearing device 200 are opened, and the airflow hole 106 may be adhered to the front clip 101 or the rear clip 102.
  • the polarizing plate 302 is blown off so that the polarizing plate 302 is automatically dropped.
  • the invention realizes the automatic tearing operation of the polarizing plate by the precise fitting of the two angles and the automatic detection of the tearing state of the polarizing plate by the sensor. Further, the present invention uses a charge coupler to determine the corner of the polarizing plate of the liquid crystal display panel that requires tearing, and determines the position of the corner to be removed. After determining to remove the corner position, the precise coordinate information of the corner to be removed is obtained by the capture of the computer image and the accurate calculation of the computer. Thereby, the automatic polarizing plate tearing operation can be realized, the work injury can be reduced, the success rate of tearing off the polarizing plate can be improved, the reuse rate of the liquid crystal display panel can be improved, and the efficiency of tearing off the polarizing plate can be improved.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

一种液晶显示面板偏光板的自动撕角装置，适用于液晶显示面板制造过程中的偏光板撕除制程，包括：前夹（101），前夹（101）包括一长臂（108）与一短臂（109），长臂（108）与短臂（109）相交大致成L形；后夹（102）与前夹（101）间隔相对设置，并可与前夹（101）配合进行夹取动作；至少一传感器（103）设置于前夹（101）或后夹（102），用以感知偏光板是否撕起成功。通过上述方式实现全自动偏光板撕除作业，并提高安全性和效率。

Description

液晶显示面板偏光板的自动撕除机、自动撕角装置与方法
【技术领域】
本发明涉及液晶显示技术领域，特别是涉及液晶显示工艺中偏光板撕除的装置与方法。
【背景技术】
偏光板是薄膜晶体管液晶显示器的重要组成部件，将其贴付到薄膜晶体管液晶显示面板上的贴付工艺，对于液晶显示器的产品性能有着重要的影响。事实上，在偏光板贴付的过程中有可能会产生贴付不良的问题。如要进行重工贴付，则需将已贴付不良的偏光板从液晶显示面板表面撕除，目前的撕除方式有全手工撕除和半自动撕除两种。全手工撕除有破片风险高、所需时间长和易产生液晶显示面板划伤等风险，大尺寸液晶显示面板问题尤为严重。另一种方式为半自动撕除，在进行半自动撕除时首先人工撕除偏光板的一角，然后使用带有滚轴的自动仪器撕除偏光板，由于涉及手工撕除偏光板一角，撕角品质好坏直接影响成功率，而手工作业对此点掌控困难，另外，涉及人员进入设备内作业，会产生相应的工安相关的风险。
【发明内容】
本发明主要解决的技术问题是提供一种液晶显示面板偏光板的自动撕除机、自动撕角装置与方法，能够实现全自动偏光板撕除作业，并可以降低工伤，提高撕除偏光板的成功率和效率。
为解决上述技术问题，本发明采用的一个技术方案是：提供一种自动撕角装置，适用于液晶显示面板制造过程中的偏光板撕除制程，该自动撕角装置包括前夹、后夹和至少一传感器。该前夹包括一长臂与一短臂，长臂与短臂相交大致成“L”形；该后夹与前夹间隔相对设置，并可与前夹配合进行夹取动作；该传感器设置于前夹或后夹，用以感知偏光板是否起撕成功。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种液晶显示面板偏光板的自动撕除机，包括：自动撕角装置，该自动撕角装置包括前夹、后夹和至少一传感器。该前夹包括一长臂与一短臂，长臂与短臂相交大致成“L”形；该后夹与前夹间隔相对设置，并可与前夹配合进行夹取动作；该传感器设置于前夹或后夹，用以感知偏光板是否起撕成功；撕除基台，承载等待撕除偏光板的液晶显示面板；前撕除滚轴和后撕除滚轴，且当进行偏光板的撕除作业时，该自动撕角装置自动完成撕角作业并夹紧被撕起一角的偏光板，而该撕除滚轴做方向相反的转动，同时，自动撕角装置配合撕除速度做上升和前行的运动、撕除基台也同时前进，而实现偏光板的完全撕除作业。
为解决上述技术问题，本发明采用的另一个技术方案是：提供一种全自动撕除液晶显示面板偏光板的方法，包括：在基台上放置液晶显示面板；在基台上对液晶显示面板进行定位；对液晶显示面板进行自动撕角；完成对液晶显示面板进行自动撕角后，对液晶显示面板的偏光板进行自动撕除。
本发明的有益效果是：本发明通过2个夹角的精密配合，以及利用传感器自动监控偏光板的起撕状态，而实现对偏光板的自动撕角操作。并进而实现全自动偏光板撕除作业，可以降低工伤，提高撕除偏光板的成功率，提高液晶显示面板的的重利用率，提高撕除偏光板的效率。
【附图说明】
为了更清楚地说明本发明实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其它的附图，其中：
图1是本发明液晶显示面板偏光板的自动撕除机一实施例的结构示意图；
图2是本发明液晶显示面板偏光板自动撕角装置一实施例的结构示意图；
图3是本发明利用如图1所示的自动撕除机进行全自动撕除液晶显示面板偏光板的流程图；
图4是图3中步骤S102的具体作业流程图；
图5是图3中步骤S103的具体作业流程图；
图6是图3中步骤S104的具体作业流程图；
图7是本发明液晶显示面板置于撕除基台上的结构示意图；
图8是本发明对撕除基台进行吸真空作业的结构示意图；
图9是本发明使用电荷耦合器判定偏光板角落的位置的结构示意图；
图10是本发明对自动撕角装置进行精确定位的结构示意图；
图11是本发明自动撕角装置定位后靠近偏光板边沿的结构示意图；
图12是本发明自动撕角装置靠近偏光板边沿的结构示意图；
图13是本发明自动撕角装置撕起液晶显示面板的一角的结构示意图；
图14是本发明自动撕角装置上升撕角完成的结构示意图；
图15是本发明自动撕角装置上升的结构示意图；
图16是本发明撕除滚轴内压，压紧撕起的偏光板的结构示意图；
图17是本发明撕除滚轴旋转，撕除基台前行的结构示意图；
图18是本发明气流孔吹气，偏光板自然掉落的结构示意图。
【具体实施方式】
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效,以下结合附图及较佳实施例，对依据本发明提出的自动撕角装置及其具体实施方式、方法、步骤、结构、特征及其功效，详细说明如下。有关本发明的前述及其他技术内容、特点及功效，在以下配合参考图式的较佳实施例的详细说明中将可清楚呈现。通过具体实施方式的说明，当可对本发明为达成预定目的所采取的技术手段及功效得以更加深入且具体的了解，然而所附图仅是提供参考与说明之用，并非用来对本发明加以限制。
如图1所示，图1为本发明液晶显示面板偏光板自动撕角机的一实施例结构示意图。该自动撕角机包括一自动撕角装置200，撕除基台202，以及前撕除滚轴203和后撕除滚轴204。该撕除基台202用于承载既定的等待进行撕除偏光板作业的液晶显示面板。
请一并参阅图2，该自动撕角装置200包括一前夹101和一后夹102以及设置于该前夹或后夹的至少一传感器103。该后夹102与该前夹101间隔相对设置，并可与前夹101配合进行夹取动作。
该前夹101由一长臂108与一短臂109相接组合而成，且该长臂108与短臂109相交大致成“L”形。该短臂108成契形设置，且其契形尖角（未标示）靠近该后夹102。该后夹102靠近该短臂109契形尖交的角落设置有一倒角（未标示），且该倒角平面与该契形尖角的斜边平面相对间隔平行，使得在夹取液晶显示面板偏光板的时候，可以防止因为受力不均匀对偏光板的破坏。
该前夹101可单独进行升降作业，该前夹101亦可与后夹102同时上升及下降并能同时左右运动。当前夹101对偏光板（请参阅图11至图18）进行撕角操作时，后夹102配合前夹101，夹紧偏光板共同完成撕角动作。
请继续参阅图2，该至少一传感器103设置于该前夹101上该长臂108和短臂109相交且靠近该后夹的位置，用以判断前夹101与偏光板的距离，确定前夹101用力的大小，感知偏光板是否起撕成功。作为替代，该至少一传感器103可以设置于所述倒角的一侧靠近所述短臂109与长臂108相交的位置，也可以设置在前夹101或者后夹102的其他位置，还可以独立与前夹101或后夹102单独设置。当然，为保证测量的立体性和全方位性，也可以在上述位置分别设置多个传感器。
进一步的，分别于该前夹101和后夹102相对的表面设置有防粘层104，用以防止偏光板黏于前夹101或后夹102上，防粘层104的材质为柔性材料，防止对偏光板或者液晶显示面板进行破坏。分别于该前夹101和后夹102的底部设置有缓冲层105，用于撕角起撕时压紧液晶显示面板。前夹101或后夹102的底部为水平光滑，缓冲层105的材质为柔性材料，防止对液晶显示面板进行破坏。于前夹101或后夹102彼此靠近的内侧设置有气流孔106，用以吹出高压气流，防止偏光板黏在前夹或后夹上，气流孔106中高压气流的流速以刚好吹掉偏光板为宜。
为抓取等待进行偏光板撕除作业的液晶显示面板角落影像并计算角落位置，一电荷耦合器107被设置于前夹101或后夹102，当然，该电荷耦合器107还可以独立于前夹101和后夹102单独设置。
当进行偏光板（未标示）的撕除作业时，将液晶显示面板放置在撕除基台202上，自动撕角装置200自动完成撕角作业并夹紧被撕起一角的偏光板，前撕除滚轴203和后撕除滚轴204做方向相反的转动，同时，自动撕角装置200配合撕除速度做上升和前行的运动、撕除基台202也同时前进，而实现偏光板的完全撕除作业。
如图3所示，图3为全自动撕除液晶显示面板偏光板实施例的流程图。包括：
步骤S101：在基台上放置液晶显示面板。
本工序开始时，将液晶显示面板运送到撕除基台的前端，此时液晶显示面板保持原来上载前的摆放方向。
步骤S102：在所述基台上对所述液晶显示面板进行定位。
请配合参阅图4所示，图4为液晶显示面板偏光板撕除过程中对液晶显示面板定位的流程图。
步骤S201：液晶显示面板置于撕除基台上。
请一并参阅图7，将液晶显示面板301放置于撕除基台202上时，通过液晶显示面板301上的对位标记确定液晶显示面板301在撕除基台202上的放置位置，实现对液晶显示面板301的整列操作。
步骤S202：对撕除基台进行吸真空作业以及旋转45度角。
请一并参阅图8，将液晶显示面板301放置于撕除基台202上后，通过吸真空装置将液晶显示面板301紧紧吸附于撕除基台202上；完成吸附操作之后，将液晶显示面板301和撕除基台202一起旋转45度，旋转方向可以为顺时针旋转，也可以为逆时针旋转。
步骤S203：使用电荷耦合器判定偏光板角落的位置，确定撕除角落的位置。
请一并参阅图9，使用电荷耦合器107对液晶显示面板301需要撕角的偏光板302的角落进行判定，确定撕除角落的位置。在确定撕除角落位置之后，通过电脑图像的捕捉和计算机的精确计算，得到需要撕除角落的精确坐标信息。
步骤S204：对自动撕角装置进行精确定位。
请一并参阅图10，在得到液晶显示面板301的偏光板302的精确坐标信息信息之后，移动自动撕角装置（未标示），对自动撕角装置进行定位。
步骤S103：对所述液晶显示面板进行自动撕角。
请配合参阅图5所示，图5为液晶显示面板偏光板撕除过程中对液晶显示面板自动撕角的流程图。
步骤S301：自动撕角装置靠近偏光板边沿。
请一并参阅图11-12，在完成对自动撕角装置200的精确定位之后，自动撕角装置200的后夹102相对偏光板302固定，移动前夹101，直到移动前夹101上的契形短臂109的尖角碰到需要撕除的偏光板302的角落。
步骤S302：自动撕角装置撕起液晶显示面板的一角。
请一并参阅图13，朝后夹102的方向继续移动前夹101。后夹102配合前夹101进行对偏光板302的撕角操作。
步骤S303：自动撕角装置上升，撕角完成。
请一并参阅图14，在完成对偏光板302的撕角操作之后，自动撕角装置200上升，完成对液晶显示面板上的偏光板302的撕角操作。
步骤S104：完成对所述液晶显示面板进行自动撕角后，对所述液晶显示面板的偏光板进行自动撕除。
请配合参阅图6所示，图6为液晶显示面板偏光板撕除过程中对偏光板自动撕除的流程图。
步骤S401：自动撕角装置上升，撕除滚轴内压，压紧撕起的偏光板。
请一并参阅图15-16，自动撕角装置200完成对偏光板302的撕角操作，移动前撕除滚轴203和后撕除滚轴204，使偏光板302位于前撕除滚轴203和后撕除滚轴204之间。自动撕角装置200上升的同时，前撕除滚轴203和后撕除滚轴204压紧撕起的偏光板302。前撕除滚轴203和后撕除滚轴204上设置有柔性材料，可以防止对偏光板302的破坏。
步骤S402：撕除滚轴旋转，撕除基台前行，自动撕角装置前行，进行撕除。
请一并参阅图17，前撕除滚轴203和后撕除滚轴204相互旋转，旋转的的方向是相反的，可以为前撕除滚轴203主动旋转，后撕除滚轴204从动旋转；也可以为前撕除滚轴203从动旋转，后撕除滚轴204主动旋转；还可以为前撕除滚轴203和后撕除滚轴204同时主动旋转。自动撕角装置200和撕除基台202配合移动，进行撕除。
步骤S403：撕除完成，气流孔吹气，偏光板自然掉落。
请一并参阅图18，偏光板302完全撕除后，所述自动撕角装置200的前夹101和后夹102张开，气流孔106吹气将可能黏在前夹101或后夹102上的偏光板302吹掉，以使得偏光板302自动掉落。
本发明通过2个夹角的精密配合，以及利用传感器自动监控偏光板的起撕状态，而实现对偏光板的自动撕角操作。进一步的，本发明使用电荷耦合器对液晶显示面板需要撕角的偏光板的角落进行判定，确定撕除角落的位置。在确定撕除角落位置之后，通过电脑图像的捕捉和计算机的精确计算，得到需要撕除角落的精确坐标信息。从而能够实现全自动偏光板撕除作业，可以降低工伤，提高撕除偏光板的成功率，提高液晶显示面板的的重利用率，提高撕除偏光板的效率。
以上所述仅为本发明的实施例，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。

Claims (19)

  1. 一种自动撕角装置，适用于液晶显示面板制造过程中的偏光板撕除制程，其特征在于，包括：
    前夹，包括一长臂与一短臂，长臂与短臂相交大致成“L”形；
    后夹，与所述前夹间隔相对设置，并可与前夹配合进行夹取动作；
    至少一传感器，设置于所述前夹或后夹，用以感知所述偏光板是否起撕成功。
  2. 根据权利要求1所述的自动撕角装置，其特征在于，所述短臂成契形设置，且其契形尖角靠近所述后夹。
  3. 根据权利要求2所述的自动撕角装置，其特征在于，所述后夹靠近所述契形短臂的角落，设置有一倒角，所述倒角平面与所述契形斜边平面相对间隔平行。
  4. 根据权利要求3所述的自动撕角装置，其特征在于，所述传感器设置于所述倒角的一侧，且靠近所述短臂与长臂相交的位置。
  5. 根据权利要求1所述的自动撕角装置，其特征在于，所述传感器设置于所述短臂与长臂相交位置，且靠近所述后夹。
  6. 根据权利要求1所述的自动撕角装置，其特征在于进一步包括缓冲层，设置于所述前夹和后夹的底部，用于撕角起撕时压紧液晶显示面板。
  7. 根据权利要求1所述的自动撕角装置，其特征在于进一步包括防粘层，设置于所述前夹和后夹相对的表面，用以防止偏光板黏于其上。
  8. 根据权利要求1所述的自动撕角装置，其特征在于进一步包括气流孔，设置于前夹或后夹彼此靠近的内侧，用以吹出高压气流，防止所述偏光板黏在所述前夹或后夹上。
  9. 根据权利要求1所述的自动撕角装置，其特征在于进一步包括一电荷耦合器（CCD）设置于所述前夹或后夹，用以抓取所述液晶显示面板角落影像并计算角落位置。
  10. 根据权利要求1所述的自动撕角装置，其特征在于所述前夹可单独升降，前夹与后夹可同时上升及下降并能同时左右运动。
  11. 一种液晶显示面板偏光板的自动撕除机，其特征在于，包括：
    自动撕角装置，所述自动撕角装置包括：
    前夹，包括一长臂与一短臂，长臂与短臂相交大致成“L”形；
    后夹，与所述前夹间隔相对设置，并可与前夹配合进行夹取动作；
    至少一传感器，设置于所述前夹或后夹，用以感知所述偏光板是否起撕成功；
    撕除基台，承载所述等待撕除偏光板的液晶显示面板；
    前撕除滚轴和后撕除滚轴；
    当进行偏光板的撕除作业时，所述自动撕角装置自动完成撕角作业并夹紧被撕起一角的偏光板，而所述撕除滚轴做方向相反的转动，同时，自动撕角装置配合撕除速 度做上升和前行的运动、撕除基台也同时前进，而实现偏光板的完全撕除作业。
  12. 一种全自动撕除液晶显示面板偏光板的方法，其特征在于，包括：在撕除基台上放置液晶显示面板；在所述撕除基台上对所述液晶显示面板进行定位；对所述液晶显示面板进行自动撕角；完成对所述液晶显示面板进行自动撕角后，对所述液晶显示面板的偏光板进行自动撕除。
  13. 根据权利要求12所述的方法，其特征在于，在所述撕除基台上对所述液晶显示面板进行定位的步骤中，在撕除基台上对液晶显示面板进行整列，以及对撕除基台进行吸真空作业以及旋转45度角。
  14. 根据权利要求13所述的方法，其特征在于，在所述撕除基台上对所述液晶显示面板进行定位的步骤中，使用电荷耦合器和电脑处理图像的方式判定偏光板角落的位置，确定撕除角落的位置。
  15. 根据权利要求13所述的方法，其特征在于，在所述撕除基台上对所述液晶显示面板进行自动撕角的步骤中，使用如权利要求1所述的自动撕角装置对所述液晶显示面板进行自动撕角。
  16. 根据权利要求15所述的方法，其特征在于，在完成对所述液晶显示面板进行自动撕角后，对所述液晶显示面板的偏光板进行自动撕除的步骤中，使用两个撕除滚轴对所述偏光板进行撕除。
  17. 根据权利要求16所述的方法，其特征在于，所述自动撕角装置自动完成撕角作业后，夹紧被撕起一角的偏光板，而所述撕除滚轴做方向相反的转动，同时，自动撕角装置配合撕除速度做上升和前行的运动、撕除基台也同时前进，而实现偏光板的完全撕除作业。
  18. 根据权利要求17所述的方法，其特征在于，所述撕除滚轴做方向相反的转动的实现方式是：两只滚轴均进行转动，或者一只滚轴主动、另一只滚轴被动。
  19. 根据权利要求18所述的方法，其特征在于，所述偏光板完全撕除后，所述自动撕角装置的前后夹张开，气流孔吹气将可能黏在所述前夹或后夹上的偏光板吹掉，以使得偏光板自动掉落。
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