Method and apparatus for laser cutting display materials

Abstract

A method and apparatus for laser cutting display materials are disclosed. The method includes: a loading step of loading a corresponding display material from a tray; and a cutting step of cutting a dummy portion of the loaded display material. The loading step includes: a loading robot placement step of placing a loading robot near the tray; a laser positioning step of aligning a laser pointer emitted from the loading robot with a first teaching point on the display material; and a picking step of picking up the display material through at least one picking pad of the loading robot.

Description

Technical Field

[0001] This disclosure relates to methods and apparatus for laser cutting display materials. Background Technology

[0002] With the development of the information society, the demand for display devices for displaying images has diversified. For example, display devices are now used in various electronic devices such as smartphones, digital cameras, laptops, navigation systems, and smart TVs. Here, display devices can be flat panel displays such as liquid crystal displays (LCDs), field emission displays (FEDs), or organic light-emitting diode (OLEDs).

[0003] Simultaneously, during the manufacturing of the display device, laser cutting of the display material is performed. For a reliable laser cutting process used for display materials, the display material and the cutting equipment need to be precisely aligned. Summary of the Invention

[0004] Technical issues

[0005] To address the aforementioned problems, embodiments of this disclosure provide a simplified method for laser cutting display materials.

[0006] Embodiments of this disclosure also provide a simplified apparatus for laser cutting display materials.

[0007] However, the embodiments of this disclosure are not limited to those set forth herein. The above and other embodiments of this disclosure will become more apparent to those skilled in the art upon which this disclosure pertains from the following detailed description.

[0008] Technical solution

[0009] According to an aspect of this disclosure, a method for laser-cutting display material includes: a loading step of loading display material from a tray, wherein the loading step includes: a loading robot placement step of placing a loading robot near the tray; an alignment step of aligning one or more pick-up pads of the loading robot with the display material; and a pick-up step of picking up the display material using the pick-up pads of the loading robot, wherein in the alignment step, the pick-up pads are aligned with the display material according to the same standard regardless of the size of the display material, and in the pick-up step, the pick-up pads pick up the display material regardless of the center position of the display material.

[0010] According to another aspect of this disclosure, an apparatus for laser cutting display material includes: a tray in which display material is loaded; and a loading robot for loading display material from the tray, wherein the loading robot includes: a laser irradiation unit for irradiating a laser pointer aligned with a first teaching point of the display material; and a pickup pad for picking up the display material.

[0011] According to another aspect of this disclosure, an apparatus for laser cutting display materials includes: a tray containing display materials; a loading robot for loading display materials from the tray; and a pre-alignment device for obtaining alignment information about the display materials, wherein the loading robot includes a pickup pad for picking up the display materials, the pre-alignment stage of the pre-alignment device includes a vacuum hole, and when each of the display materials is placed on the pre-alignment stage, the pickup pad overlaps with the area where the vacuum hole of the pre-alignment stage is provided.

[0012] Details of other embodiments of this disclosure are included in the description and accompanying drawings.

[0013] Beneficial effects

[0014] According to embodiments of this disclosure, laser cutting facilities and processes can be simplified.

[0015] It should be noted that the effects of this disclosure are not limited to those described above, and other effects of this disclosure will be apparent from the following description. Attached Figure Description

[0016] Figure 1 This is a flowchart of a method for laser cutting display materials according to an embodiment of the present disclosure.

[0017] Figure 2 yes Figure 1 The flowchart of the loading steps.

[0018] Figure 3 This is a plan view of the display material according to an embodiment of the present disclosure.

[0019] Figure 4 It is along Figure 3 A sectional view taken by line I-I'.

[0020] Figure 5 It is shown Figure 1 A perspective view of the loading steps.

[0021] Figure 6 It is shown Figure 1 A plan view of the loading steps.

[0022] Figure 7 It is a plan view showing the alignment of the first teaching point and the laser pointer.

[0023] Figure 8 It is a plan view showing the first teaching point of various display materials with different areas.

[0024] Figure 9 yes Figure 1 The flowchart for the first rotation step.

[0025] Figure 10 This is a perspective view showing how a laser pointer of a loading robot according to an embodiment of the present disclosure is aligned with a second teaching point of a rotary table.

[0026] Figure 11 This is a plan view illustrating how the laser pointer of the loading robot according to an embodiment of the present disclosure is aligned with the second teaching point of the rotary table.

[0027] Figure 12 It is shown Figure 10 A plan view showing the alignment of the laser pointer with the second teaching point.

[0028] Figure 13 It is shown Figure 9 A plan view of the arrangement steps on the rotary table for the first rotation step.

[0029] Figure 14 yes Figure 1 The flowchart of the pre-alignment steps.

[0030] Figure 15 This is a plan view of the pre-alignment stage according to an embodiment of the present disclosure.

[0031] Figure 16 It is shown Figure 14 A plan view of the steps for arranging the pre-alignment platform.

[0032] Figure 17 It is along Figure 16 The sectional view taken from line II-II'.

[0033] Figure 18 This is a plan view of a pre-alignment stage according to another embodiment of the present disclosure.

[0034] Figure 19 It is along Figure 18 The sectional view taken from line III-III'. Detailed Implementation

[0035] The advantages and features of the invention, as well as methods of implementing them, can be more readily understood by referring to the detailed description and accompanying drawings of the following embodiments. However, the invention can be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the inventive concept to those skilled in the art, and the invention will be defined solely by the appended claims.

[0036] It will be understood that when an element or layer is referred to as being "on" another element or layer, the element or layer may be directly on the other element or layer, or an intervening element or layer may be present. Throughout the specification, the same reference numerals denote the same elements.

[0037] It will be understood that although the terms first, second, etc., may be used herein to describe various elements, components, regions, layers, and / or portions, these elements, components, regions, layers, and / or portions should not be limited by these terms. These terms are used only to distinguish one element, component, region, layer, or portion from another element, component, region, layer, or portion. Therefore, without departing from the teachings of the invention, the first element, first component, first region, first layer, or first portion discussed below may be referred to as a second element, second component, second region, second layer, or second portion.

[0038] Features of each embodiment of the present invention may be combined or integrated with each other in part or in whole, may be technically linked and driven in various ways, and embodiments of the present invention may be implemented independently of each other or in combination with each other.

[0039] Embodiments of the present invention will be described below with reference to the accompanying drawings.

[0040] Figure 1 This is a flowchart of a method for laser cutting display materials according to an embodiment of the present disclosure. Figure 2 yes Figure 1 The flowchart of the loading steps. Figure 3 This is a plan view of the display material according to an embodiment of the present disclosure. Figure 4 It is along Figure 3 A sectional view taken by line I-I'. Figure 5 It is shown Figure 1 A perspective view of the loading steps. Figure 6 It is shown Figure 1 A plan view of the loading steps. Figure 7 It is a plan view showing the alignment of the first teaching point and the laser pointer. Figure 8 It is a plan view showing the first teaching point of various display materials with different areas. Figure 9 yes Figure 1 The flowchart for the first rotation step. Figure 10 This is a perspective view showing how a laser pointer of a loading robot according to an embodiment of the present disclosure is aligned with a second teaching point of a rotary table. Figure 11 This is a plan view illustrating how the laser pointer of the loading robot according to an embodiment of the present disclosure is aligned with the second teaching point of the rotary table. Figure 12 It is shown Figure 10 A plan view showing the alignment of the laser pointer with the second teaching point. Figure 13 It is shown Figure 9 A plan view of the arrangement steps on the rotary table for the first rotation step. Figure 14 yes Figure 1 The flowchart of the pre-alignment steps. Figure 15 This is a plan view of the pre-alignment stage according to an embodiment of the present disclosure. Figure 16 It is shown Figure 14 A plan view of the steps for arranging the pre-alignment platform. Figure 17 It is along Figure 16 The sectional view taken from line II-II'.

[0041] Reference Figures 1 to 17 According to embodiments of the present disclosure, a method for laser-cutting display material is a method for laser-cutting a display panel PL of a display device, a polarizer component POL on the display panel PL, a driver integrated circuit D_IC mounted on a portion of the display panel PL that protrudes beyond the polarizer component POL in a plan view, and a printed circuit film FPCB formed on one end of the display panel PL to conform to the shape of the display device to be transported. The method for laser-cutting display material can be performed by an apparatus for laser-cutting display material. As described later, the apparatus for laser-cutting display material may include: a rotating device including a tray, a loading robot, and a turntable 200; a pre-alignment device including a pre-alignment stage 500, a backlight unit, a primary vision camera, and a secondary vision camera; and a controller.

[0042] The method for laser cutting display material includes: a loading step S10 of loading display material 1 from a tray; and a cutting step S50 of cutting a dummy portion of the loaded display material 1.

[0043] Loading step S10 may include: loading the robot (see...) Figure 5 The process includes: a loading robot placement step S11; a laser positioning step S13 aligning the laser pointer LP emitted from the loading robot with the first teaching point TP (hereinafter also referred to as the intersection TP) of the display material 1; and a picking step S15 picking up the display material 1 via one or more pick-up pads (also referred to as "pads" or "solder pads") 171 and 175 of the loading robot. In the picking step S15, the pick-up pads 171 and 175 can pick up the display material 1 with a predetermined pressure.

[0044] like Figure 3 As shown, the display material 1 may include a display panel PL and a polarizer component POL positioned on the display panel PL.

[0045] The display panel PL can be, for example, a light-emitting diode (LED) display panel, an organic light-emitting display panel, a quantum dot light-emitting display panel, a plasma display panel, or a field emission display panel. The display panel PL will be described below as, for example, an LED display panel, but this disclosure is not limited thereto. That is, this disclosure can also be applied to a variety of other display panels.

[0046] The display panel PL may have a rectangular shape having a short side extending in a first direction DR1 and a long side extending in a second direction DR2 intersecting the first direction DR1. The display panel PL may also include a protrusion that protrudes from the short side of a second side of the display panel PL in the second direction DR2. The width of the protrusion in the first direction DR1 may be smaller than the width of the rectangular portion of the display panel PL in the first direction DR1.

[0047] The planar shape of the polarizer component POL can be generally similar to the planar shape of the rectangular portion of the display panel PL. The polarizer component POL may include edges EG3 and EG4 adjacent to the long side of the display panel PL and edges EG1 and EG2 adjacent to the short side of the display panel PL.

[0048] Typically, display material 1 can be loaded from a tray by placing the center of the loading robot's pickup pad in the middle of display material 1 and lowering display material 1.

[0049] However, since the pickup position of the pickup pad used for display material 1 may change, it may take a considerable amount of time to align display material 1 after the step of loading display material 1 (i.e., in the pre-alignment step S40 or the inspection step (or fine alignment step)).

[0050] Furthermore, as mentioned above, if there are multiple display materials 1 with different sizes, the middle parts of the multiple display materials 1 may not overlap with each other. Therefore, calibrating the pickup position of the multiple display materials 1 may take a considerable amount of time.

[0051] However, according to the method for laser-cutting display materials, the loading step S10 includes: a laser positioning step S13 aligning the laser pointer LP emitted from the loading robot with the first teaching point TP of the display material 1; and a picking step S15 picking up the display material 1 using pick-up pads 171 and 175. When the position of the laser pointer LP relative to one or more pick-up pads 171 is maintained in a plan view, the pick-up pads 171 whose position is maintained relative to the laser pointer LP can be aligned with the first teaching point TP by aligning the laser pointer LP with the first teaching point TP.

[0052] Since the pickup position of the pickup pad used for display material 1 is fixed, any delays in the alignment process after loading display material 1 (e.g., in the pre-alignment step S40 or the inspection step (or fine alignment step)) can be prevented in advance.

[0053] Furthermore, by employing a fixed pickup position, the amount of time spent processing multiple display materials 1 of different sizes can be significantly reduced, regardless of the position of the center of the multiple display materials 1.

[0054] The first teaching point TP can be the intersection of the edge EG1 of the polarizer component POL and the dividing line DL. The edge EG1 of the polarizer component POL is adjacent to the short side of the second side of the display panel PL in the second direction DR2. The dividing line DL divides the display panel PL into equal parts in the first direction DR1.

[0055] The laser pointer LP may include a first laser extension LPa extending in a first direction DR1 and a second laser extension LPb extending in a second direction DR2.

[0056] In the laser positioning step S13, the intersection point between the first laser extension LPa and the second laser extension LPb can be aligned with the first teaching point TP. Furthermore, the first laser extension LPa can be aligned with the edge EG1, and the second laser extension LPb can be aligned with the boundary line DL.

[0057] Cutting step S50 may be a step of cutting a dummy portion of the display material 1 using a cutter from a device for laser cutting display materials.

[0058] The structure of the loading robot is as follows Figure 5 and Figure 6 As shown in the image.

[0059] like Figure 5 and Figure 6 As shown, the loading robot may include: a main support portion 110 extending in a second direction DR2; a first vertical portion 120 connected to the main support portion 110 and extending in the thickness direction; a second vertical portion 130 connected to the main support portion 110 and extending in the thickness direction; a first lower support portion 140 supporting the first vertical portion 120 from below; a second lower support portion 150 supporting the second vertical portion 130 from below; a plurality of pickup pads 171 and 175 disposed on the bottom surface of the first lower support portion 140 and / or the bottom surface of the second lower support portion 150, and for picking up display material 1; a laser irradiation part fixing member 180 connected to the first lower support portion 140 and fixing a laser irradiation part 190; and a laser irradiation part 190 fixed by the laser irradiation part fixing member 180 and capable of irradiating a laser pointer LP aligned with a first teaching point TP of the display material 1.

[0060] The main support portion 110 may include a plurality of fixing holes 110H1 and 110H2 penetrating the main support portion 110 in a first direction DR1. The width of the first fixing hole 110H1 in the first direction DR1 may be smaller than the width of the second fixing hole 110H2 in the first direction DR1. A plurality of first fixing holes 110H1 may be provided, but this disclosure is not limited thereto. A protrusion (not shown) of the first vertical portion 120 may be inserted into the first fixing hole 110H1. A protrusion (not shown) of the second vertical portion 130 may be inserted into the second fixing hole 110H2. The width of the second fixing hole 110H2 in the first direction DR1 may be greater than the width of the first fixing hole 110H1 in the first direction DR1, to provide space for the protrusion of the second vertical portion 130 to move therein. In other words, because the first vertical part 120 is fixed to the main support part 110 through the first fixing hole 110H1, the first vertical part 120 cannot move in the second direction DR2. However, even if the protrusion of the second vertical part 130 is inserted into the second fixing hole 110H2, the second vertical part 130 is not fixed and can therefore move in the second direction DR2.

[0061] Therefore, the first lower support portion 140 connected to the first vertical portion 120 and the first pickup pad 171 disposed on the bottom surface of the first lower support portion 140 can be fixed as immovable, but the second lower support portion 150 connected to the second vertical portion 130 and the second pickup pad 175 disposed on the bottom surface of the second lower support portion 150 can be movable in the second direction DR2.

[0062] The display material 1 may also include a printed circuit film FPCB attached to the end of the display panel PL, and in the picking step S15, at least one of the picking pads 171 and 175 may be stacked with the display panel PL in the thickness direction and a picking operation may be performed, and the other of the picking pads 171 and 175 may be stacked with the printed circuit film FPCB and a picking operation may be performed.

[0063] As mentioned above, since the second pickup pad 175, which is provided on the bottom surface of the second lower support portion 150, is movable in the second direction DR2, the printed circuit film FPCB can be picked up by adjusting the position of the second pickup pad 175 according to the size of the printed circuit film FPCB.

[0064] like Figure 8As shown, according to the laser cutting method for display materials, by employing a fixed pickup position (e.g., the intersection point TP between the extension EL_EG1 of the edge EG1 of the polarizer component POL and the dividing line DL that divides each of the multiple display materials 1 into equal parts), the amount of time spent processing multiple display materials 1 with different sizes can be significantly reduced, regardless of the position of the center of the multiple display materials 1.

[0065] Subsequently, the method for laser cutting display material may further include a first rotation step S20 between loading step S10 and cutting step S50, in which the loaded display material 1 is reversed in the front-back direction.

[0066] The initial rotation step S20 may include: an initial transfer step S21 of transferring the picked-up display material 1; a rotation step S23 of arranging the transferred display material 1 on the rotary table 200; and a subsequent rotation step S25 of rotating the display material 1 arranged on the rotary table 200.

[0067] The method for laser cutting display materials may further include: aligning the laser pointer LP of the loading robot with the second teaching point 200_PC of the rotary table 200 before the loading robot placement step S11.

[0068] The second teaching point 200_PC can be set on the rotary table 200 in an engraving manner.

[0069] Specifically, the second teaching point 200_PC may include a first teaching extension 200_P1 extending in the first direction DR1 and a second teaching extension 200_P2 extending in the second direction DR2.

[0070] In the step of aligning the laser pointer LP with the second teaching point 200_PC of the rotary stage 200, the second teaching point 200_PC between the first teaching extension 200_P1 and the second teaching extension 200_P2 can be aligned with the intersection point LPc between the first laser extension LPa and the second laser extension LPb. Furthermore, the first laser extension LPa can be aligned with the first teaching extension 200_P1, and the second laser extension LPb can be aligned with the second teaching extension 200_P2.

[0071] According to the laser cutting method for display materials, even without display material 1, the second teaching point 200_PC between the first teaching extension 200_P1 and the second teaching extension 200_P2, and the intersection point LPc between the first laser extension LPa and the second laser extension LPb can be pre-aligned between the rotary table 200 and the loading robot, and the picking position of the loading robot for display material 1 can be fixed. Therefore, the desired horizontal alignment between display material 1 and rotary table 200 can be achieved in the steps from loading step S10 to first rotation step S20.

[0072] Subsequently, the method for laser cutting display material may further include: a pre-alignment step S40 for obtaining alignment information about display material 1 between the initial rotation step S20 and the cutting step S50.

[0073] The pre-alignment step S40 may include: a secondary transfer step S41 of transferring the first rotated display material 1; a pre-alignment stage placement step S43 of placing the transferred display material 1 on the pre-alignment stage 500; and a first visual step S45 of capturing an image of the alignment mark LIP set on the pre-alignment stage 500 by applying light via a backlight unit. In the pre-alignment stage placement step S43, the portion of the display material 1 that overlaps with the polarizer member POL may be placed on the upper part 510 of the pre-alignment stage 500, and the portion of the display material 1 that does not overlap with the polarizer member POL may be placed on the lower part 520 of the pre-alignment stage 500. The boundary 500_L between the upper part 510 and the lower part 520 of the pre-alignment stage 500 may extend in the first direction DR1 and may be parallel to the first teaching extension 200_P1.

[0074] The alignment information about the display material 1 obtained in the initial vision step S45 can be reflected in the cutting step S50.

[0075] Subsequently, refer to Figure 1 The laser cutting method for display materials may further include, after the cutting step S50: an inspection step S60 for obtaining alignment information about the display material 1; a secondary rotation step S70 for reversing the display material 1 in the front-back direction; and an unloading step S80 for unloading the secondary rotated display material 1.

[0076] Inspection step S60 may include steps similar to those in pre-alignment step S40. Inspection step S60 may include: a three-step transfer of the cut display material 1; a step of placing the transferred display material on an inspection table; and a secondary vision step of capturing an image of alignment marks on the inspection table by applying light via a backlight unit. Inspection step S60 can acquire alignment information about the display material 1 that has undergone cutting step S50, and can adjust the position of the display material 1 based on the alignment information acquired in the secondary vision step.

[0077] The secondary rotation step S70 may include: a four-transfer step of transferring the inspected display material 1; a step of arranging the transferred display material 1 on the secondary rotation table; and a pre-rotation step of rotating the display material 1 arranged on the secondary rotation table.

[0078] The unloading step S80 is almost identical to the loading step S10, except that the display material 1 is picked up from the secondary rotary table instead of from the tray.

[0079] At the same time, such as Figures 15 to 17 As shown, a plurality of vacuum holes VH penetrating the pre-alignment stage 500 in the thickness direction can be provided in the upper part 510 of the pre-alignment stage 500.

[0080] The vacuum hole VH penetrating the upper part 510 of the pre-alignment stage 500 can form an air passage for air to be drawn by the suction device VD, and thus allows the display material 1 to be easily arranged on the pre-alignment stage 500 in step S43 of arranging the display material 1 on the pre-alignment stage 500.

[0081] like Figure 15 As shown in the diagram, in the plan view, vacuum holes VH can be formed on the entire surface of the upper part 510. Vacuum holes VH can be arranged in a matrix, but this disclosure is not limited thereto.

[0082] Although not specifically shown, the apparatus for laser cutting display material may also include a controller that stores positional information between a first teaching point TP of the display material 1 and elements of the apparatus for laser cutting the display material. The positional information may include: positional information between the first teaching point TP and the center of the tray; positional information between the first teaching point TP and the initial rotation device; and positional information between the first teaching point TP and a pre-alignment mark of the pre-alignment device.

[0083] Other embodiments of this disclosure will be described below. Throughout this disclosure, the same reference numerals indicate the same elements, and their descriptions will be omitted or simplified.

[0084] Figure 18 This is a plan view of a pre-alignment stage according to another embodiment of the present disclosure. Figure 19 It is along Figure 18 The sectional view taken from line III-III'.

[0085] Reference Figure 18 and Figure 19 The steps for setting up the pre-alignment platform are as follows Figures 15 to 17 The difference in the corresponding steps is that the pickup pad 171 is stacked with the area of ​​the pre-alignment stage 500 where the vacuum hole VH_1 is provided.

[0086] According to Figure 18 and Figure 19 In the laser cutting method for display materials according to an embodiment, during the pre-alignment stage arrangement step, the pick-up pad 171 may be stacked only with the area of ​​the pre-alignment stage 500 where the vacuum hole VH_1 is provided. That is, with Figures 15 to 17 Unlike the vacuum hole VH, the vacuum hole VH_1 of the pre-alignment stage 500 may not be set on the entire surface of the pre-alignment stage 500, but may only be formed locally on the pre-alignment stage 500.

[0087] According to Figure 18 and Figure 19 In the laser cutting method for display materials according to the embodiment, during the pre-alignment stage arrangement step, the vacuum hole VH_1 may not be provided on the entire surface of the pre-alignment stage 500, but may be locally formed at the position where it overlaps with the pick-up pad 171. Therefore, the display material 1 can be effectively separated from the pick-up pad 171, which fixes the display material 1 with a predetermined pressure, and the display material 1 can be prevented from being bent or physically damaged in all areas overlapping with the vacuum hole VH_1, except for the area picked up by the pick-up pad 171.

[0088] Although some embodiments of the invention have been described, it will be readily understood by those skilled in the art that many modifications may be made to the embodiments without departing from the novel teachings and advantages of the invention. Therefore, all such modifications are intended to be included within the scope of the invention as defined in the claims. It will therefore be understood that the foregoing is illustrative of the invention and is not to be construed as limiting oneself to the specific embodiments disclosed.

Claims

1. A method for laser cutting display materials, the method comprising: The loading step of loading display materials from a tray, each of the display materials includes a display panel for displaying images and a polarizer component positioned on the display panel; A pre-alignment step for obtaining alignment information about the display material; as well as The cutting step for cutting the dummy portion of the display material. The loading step includes: a loading robot placement step, which positions the loading robot near the pallet; an alignment step, which aligns the multiple pickup pads of the loading robot with the display material; and a pickup step, which uses the multiple pickup pads of the loading robot to pick up the display material. The alignment step includes a laser positioning step that aligns a laser pointer emitted from the loading robot with a first teaching point of each component in the display material. The first teaching point is the intersection between the boundary line dividing the display panel into equal parts and the edge of the polarizer component. In the alignment step, the plurality of pickup pads are aligned with the various display materials according to the same standard, regardless of the size of the various display materials. In the picking step, the multiple picking pads pick up multiple display materials regardless of the center position of the multiple display materials. The pre-alignment step includes: a secondary transfer step of conveying the display material; a pre-alignment stage placement step of placing the secondary-transferred display material on the pre-alignment stage; and a first visual step of capturing an image of the alignment marks on the pre-alignment stage by applying light via a backlight unit. The alignment information about the display material obtained in the initial visual step is reflected in the cutting step.

2. The method according to claim 1, wherein, The display panel includes a rectangular shape formed by a short side extending in a first direction and a long side extending in a second direction intersecting the first direction, and The first teaching point is the intersection between an edge of the polarizer component adjacent to one of the short sides of the display panel and the dividing line that divides the display panel into equal parts in the first direction.

3. The method according to claim 1, wherein, The laser pointer includes a first laser extension portion extending in a first direction and a second laser extension portion extending in a second direction intersecting the first direction, and In the laser positioning step, the intersection between the first laser extension and the second laser extension is aligned with the first teaching point.

4. The method according to claim 3, further comprising: The first rotation step between the loading step and the pre-alignment step, in which the loading of the display material is reversed in the front-back direction.

5. The method according to claim 4, wherein, The initial rotation step includes: The initial transfer step of the picked-up display material; The step of arranging the display material initially conveyed onto the rotating table, and... The subsequent rotation step of the display material arranged on the rotating platform.

6. The method according to claim 5, further comprising, prior to the arrangement step on the rotary table: The step of aligning the laser pointer of the loading robot with the second teaching point of the rotary table.

7. The method according to claim 6, wherein, The second teaching point is set on the rotating platform in the form of an engraving.

8. The method according to claim 7, wherein, The second teaching point includes a first teaching extension extending in the first direction and a second teaching extension extending in the second direction, and In the step of aligning the laser pointer of the loading robot with the second teaching point of the rotary table, the intersection between the first teaching extension and the second teaching extension is aligned with the intersection between the first laser extension and the second laser extension.

9. The method according to claim 1, further comprising, after the cutting step: A check step to obtain alignment information about the cut display material; Following the inspection step, a secondary rotation step is performed to reverse the display material in the front-back direction; as well as The unloading step of the display material after secondary rotation.

10. The method according to claim 1, wherein, In the pre-alignment stage arrangement step, the plurality of pickup pads are stacked with the area where the vacuum hole of the pre-alignment stage is provided.

11. The method according to claim 1, wherein, Each of the display materials further includes a printed circuit film, which is attached to an end of the display panel, and In the picking step, at least one of the plurality of picking pads, which is stacked with the display panel in the thickness direction, picks up the display panel, and another of the plurality of picking pads, which is stacked with the printed circuit film in the thickness direction, picks up the printed circuit film.

12. The method according to claim 11, wherein, The pickup pad for picking up the printed circuit film is movable in one direction.

13. The method according to claim 1, wherein, In the plan view, the laser pointer and the plurality of pickup pads are kept in their positions relative to each other.

14. An apparatus for laser cutting display materials, each of the display materials comprising a display panel for displaying an image and a polarizer member positioned on the display panel, the apparatus comprising: The tray shows the material loaded on it. A loading robot loads the display material from the tray; A pre-alignment device acquires alignment information about the display material; as well as The cutting device cuts the dummy portion of the display material, and the pre-alignment device is positioned between the loading robot and the cutting device. in, The loading robot includes a plurality of pickup pads for picking up and aligning the display material. When aligning the pickup pads with the display material, a laser pointer emitted from the loading robot is aligned with a first teaching point on each of the display materials. The first teaching point is the intersection between the dividing line that divides the display panel into equal portions and the edge of the polarizer component. The plurality of pickup pads are aligned with the plurality of display materials according to the same standard, regardless of the size of the plurality of display materials, and the plurality of pickup pads pick up the plurality of display materials regardless of the center position of the plurality of display materials. The pre-alignment device includes a pre-alignment stage with a vacuum aperture and a backlight unit for applying light. The pre-alignment device uses the light to capture an image of alignment marks on the pre-alignment stage. When each of the display materials is disposed on the pre-alignment stage, the plurality of pickup pads overlap with the area of ​​the vacuum hole provided by the pre-alignment stage, and The cutting device cuts the display material based on the alignment information about the display material obtained through the pre-alignment device.

15. The apparatus of claim 14, further comprising: The first rotating device reverses the loaded display material in the front-to-back direction before the cutting device. The pre-alignment device is positioned between the initial rotation device and the cutting device.

16. The apparatus according to claim 15, wherein, The laser pointer includes: a first laser extension portion extending in a first direction; and a second laser extension portion extending in a second direction intersecting the first direction. The intersection point between the first laser extension and the second laser extension is aligned with the first teaching point of each of the display materials.

17. The apparatus according to claim 16, wherein, The rotary table of the initial rotating device includes a second teaching point arranged in an engraving manner to align with the laser pointer of the loading robot prior to the step of loading the display material. The second teaching point includes: a first teaching extension extending in the first direction; and a second teaching extension extending in the second direction, and In the process of aligning the laser pointer with the second teaching point of the rotary table, the intersection between the first teaching extension and the second teaching extension is aligned with the intersection between the first laser extension and the second laser extension.

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