Cutting apparatus and method of manufacturing display apparatus using the same

Abstract

According to one embodiment of the present application, a cutting apparatus includes a table including an upper surface and a lower surface as an opposite surface of the upper surface, at least one through-hole defined in the table extending in a vertical direction from the upper surface to the lower surface, a laser irradiation section spaced upward from the upper surface, and a gas injection section adjacent to the table. A first gas flow passage and a second gas flow passage are defined in the table, the first gas flow passage extending from the through-hole at a first angle with respect to the vertical direction, and the second gas flow passage extending from the through-hole at a second angle with respect to the vertical direction, and the gas injection section ejects gas to the first gas flow passage and the second gas flow passage, the gas being supplied to the through-hole through the first gas flow passage and the second gas flow passage.

Description

TECHNICAL FIELD

[0001] The present application relates to a cutting apparatus and a method of manufacturing a display apparatus using the same. BACKGROUND

[0002] Generally, an electronic device (such as a smart phone, a digital camera, a notebook computer, a navigator, and a smart TV, etc.) that provides an image to a user includes a display apparatus for displaying an image. The display apparatus generates an image and provides the generated image to the user through a display screen.

[0003] The display apparatus includes a display module for generating an image and a sensor for providing various functions to the user. For example, the display apparatus can include a front camera. A hole for arranging the front camera can be defined in the display apparatus. The hole can be formed using a laser having a predetermined wavelength in a process of manufacturing the display apparatus. SUMMARY

[0004] Technical Problem

[0005] An object of the present application is to provide a cutting apparatus capable of more easily processing a hole for arranging a sensor in a display apparatus and a method of manufacturing a display apparatus using the same.

[0006] Solution to Problem

[0007] According to one embodiment of the present application, a cutting apparatus includes a stage including an upper surface and a lower surface as an opposite surface of the upper surface, at least one through-hole defined in the stage extending in a vertical direction from the upper surface, a laser irradiation portion spaced upward from the upper surface, and a gas injection portion adjacent to the stage. A first gas flow passage extending from the through-hole at a first angle with respect to the vertical direction and a second gas flow passage extending from the through-hole at a second angle with respect to the vertical direction are defined in the stage, and the gas injection portion sprays a gas to the first gas flow passage and the second gas flow passage, and the gas is supplied to the through-hole through the first gas flow passage and the second gas flow passage.

[0008] According to one embodiment of the present application, a method of manufacturing a display apparatus includes a step of arranging a display module on an upper surface of a stage in which at least one through-hole extending in a vertical direction, a first gas flow passage extending from the through-hole at a first angle with respect to the vertical direction, and a second gas flow passage extending from the through-hole at a second angle with respect to the vertical direction are defined, a step of irradiating a laser to a boundary of a first region of the display module overlapping the through-hole to cut the first region from the display module, a step of spraying a first gas to the through-hole through the first gas flow passage when cutting the first region, and a step of spraying a second gas to the through-hole through the second gas flow passage after cutting the first region.

[0009] Advantageous Effects

[0010] According to an embodiment of the present application, the gas injection part can inject gas to the through hole through the first gas flow passage and the second gas flow passage. The gas injected through the first gas flow passage can support the first area from the bottom when the laser irradiation part irradiates laser to the display module, so that the defective rate of the laser processing can be reduced. In addition, the gas injected through the second gas flow passage can apply strong pressure to the first area after the laser processing is finished, so that the first area can be completely removed from the display module. Thus, the defective rate of the laser processing can be reduced, and the yield of the display device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0011] Figure 1 is a perspective view of a display device according to an embodiment of the present application.

[0012] Figure 2 is a sectional view taken along line I-I' of Figure 1 .

[0013] Figure 3 is an exemplary sectional view of a display panel shown in Figure 2 .

[0014] Figure 4 is a perspective view of a cutting device according to an embodiment of the present application.

[0015] Figure 5 is a sectional view taken along line II-II' of Figure 4 .

[0016] Figure 6 is a flowchart illustrating a method of manufacturing a display device according to an embodiment of the present application.

[0017] Figures 7 to 10 is a view illustrating each process of a method of manufacturing a display device according to an embodiment of the present application.

[0018] EXPLANATION OF REFERENCE NUMERALS

[0019] CUD: cutting device LD: laser irradiation part

[0020] ST: stage GI: gas injection part

[0021] SCP: suction part SUP: support part

[0022] NOP: nozzle part PH: through hole

[0023] GP1: first gas flow passage GP2: second gas flow passage

[0024] DD: display device DM: display module

[0025] WIN: window SP: sensor portion

[0026] SH: sensor hole DETAILED DESCRIPTION

[0027] In the present specification, when referring to that one constitutional element (or region, layer, portion, etc.) is "on", "connected" or "joined" to another constitutional element, it means that it is directly placed / connected / joined to the other constitutional element or a third constitutional element can be placed between them.

[0028] The same reference numerals are used to designate the same elements throughout the specification. Furthermore, in the drawings, the thickness, the ratio and the dimension of the constitutional elements are exaggerated for the sake of effective explanation of the technical content.

[0029] The "and / or" includes one or more combinations that can be defined by the relevant components.

[0030] The terms "first", "second", and so on can be used to describe various constitutional elements, but these constitutional elements should not be limited by the above terms. The above terms are used only for the purpose of distinguishing one constitutional element from another constitutional element. For example, a first constitutional element can be named a second constitutional element, and similarly, a second constitutional element can also be named a first constitutional element without departing from the scope of the present invention. The singular expression includes the plural expression unless it is clearly different in the context.

[0031] Furthermore, terms such as "below", "lower", "above", "upper" and the like are used to describe the relative relationship between components shown in the drawings. The above terms are described as relative concepts based on the direction shown in the drawings.

[0032] Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification have the same meaning as commonly understood by one of ordinary skill in the art to which the present invention pertains. In addition, terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with its meaning in the context of the relevant technology and, unless explicitly defined otherwise herein, should not be interpreted in an ideal or overly formal sense.

[0033] The terms "include" or "have" and the like are intended to denote the presence of the characteristics, numbers, steps, actions, constitutional elements, components or combinations thereof described in the specification, and should be understood as not precluding the presence or addition of one or more other characteristics, numbers, steps, actions, constitutional elements, components or combinations thereof.

[0034] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0035] Figure 1 is a perspective view of a display device according to an embodiment of the present invention.

[0036] Referring to Figure 1 , the display device DD according to an embodiment of the present application can have a rectangular shape having a short side extending in a first direction DR1 and a long side extending in a second direction DR2 crossing the first direction DR1. However, it is not limited thereto, and the display device DD can have various shapes such as a circular shape or a polygonal shape.

[0037] Hereinafter, a direction substantially perpendicularly crossing a plane defined by the first direction DR1 and the second direction DR2 will be defined as a third direction DR3.

[0038] An upper surface of the display device DD can be defined as a display surface DS, and the upper surface of the display device DD can have a plane defined by the first direction DR1 and the second direction DR2. An image IM generated in the display device DD can be provided to a user through the display surface DS.

[0039] The display surface DS can include a display area DA and a non-display area NDA surrounding the display area DA. The display area DA can display an image, and the non-display area NDA can not display an image. The non-display area NDA can surround the display area DA. The non-display area NDA can define a bezel of the display device DD.

[0040] The display area DA can include a transmissive area PA. The transmissive area PA can have a circular shape when viewed on a plane. In the transmissive area PA, a sensor providing various functions to a user can be disposed.

[0041] The display device DD can be used for a large electronic device such as a television, a monitor, or an external billboard. Also, the display device DD can be used for a medium or small electronic device such as a personal computer, a notebook computer, a personal digital terminal, a smart phone, or a tablet computer. However, these are provided only as exemplary embodiments, and can be used for other electronic devices without departing from the concept of the present application.

[0042] Figure 2 is a sectional view taken along a line I-I' in Figure 1

[0043] Referring to Figure 2 , the display device DD can include a display module DM, a window WIN disposed on the display module DM, and a sensor portion SP disposed in the display module DM.

[0044] ​The display module DM can include a display panel DP, an input sensing part ISP, a polarizing film POL, a protection film PFM, and a cushion layer CSL. In the display module DM, the input sensing part ISP and the polarizing film POL can be disposed above the display panel DP. The protection film PFM and the cushion layer CSL can be disposed below the display panel DP.

[0045] The display panel DP according to an embodiment of the present application can be a light emitting type display panel, but is not particularly limited. For example, the display panel DP can be an organic light emitting display panel or a quantum dot light emitting display panel. The light emitting layer of the organic light emitting display panel can include an organic light emitting material. The light emitting layer of the quantum dot light emitting display panel can include quantum dots and quantum rods, etc. Hereinafter, the display panel DP will be described as an organic light emitting display panel.

[0046] The input sensing part ISP can be disposed on the display panel DP. The input sensing part ISP can include a plurality of sensing parts (not shown) for sensing an external input. The sensing parts can sense the external input in a capacitive manner. In manufacturing the display panel DP, the input sensing part ISP can be directly manufactured on the display panel DP. However, it is not limited thereto, and the input sensing part ISP can be manufactured as a separate panel from the display panel DP, and can be attached to the display panel DP by an adhesive.

[0047] The polarizing film POL can be disposed on the input sensing part ISP. The polarizing film POL can be defined as an anti-external light reflection film. The polarizing film POL can reduce the reflectance of external light incident on the display panel DP from above the display device DD. For example, the polarizing film POL can include a phase retarder and / or a polarizer.

[0048] The protection film PFM can be disposed below the display panel DP. The protection film PFM can be defined as a protection substrate. The protection film PFM can protect a lower portion of the display panel DP. The protection film PFM can include a flexible plastic substrate. For example, the protection film PFM can include polyethylene terephthalate (PET).

[0049] The cushion layer CSL can be disposed below the protection film PFM. The cushion layer CSL can absorb external impact applied to a lower portion of the display module DM, thereby protecting the display panel DP. The cushion layer CSL can include a foam sheet having a predetermined elasticity.

[0050] The window WIN can be disposed on the polarizing film POL of the display module DM. The window WIN can protect the display panel DP, the input sensing part ISP, and the polarizing film POL from external scratches and impacts. An image generated in the display panel DP can be provided to a user through the window WIN.

[0051] A first adhesive ADH1 to a fourth adhesive ADH4 can be disposed inside the display module DM and between the display module DM and the window WIN. Specifically, the first adhesive ADH1 can be disposed between the protective film PFM and the buffer layer CSL. The protective film PFM and the buffer layer CSL can be adhered to each other by the first adhesive ADH1. The second adhesive ADH2 can be disposed between the display panel DP and the protective film PFM. The protective film PFM and the display panel DP can be adhered to each other by the second adhesive ADH2. The third adhesive ADH3 can be disposed between the input sensing part ISP and the polarizing film POL. The input sensing part ISP and the polarizing film POL can be adhered to each other by the third adhesive ADH3. Each of the first adhesive ADH1 to the third adhesive ADH3 can include a pressure sensitive adhesive.

[0052] The fourth adhesive ADH4 can be disposed between the polarizing film POL and the window WIN. The polarizing film POL and the window WIN can be adhered to each other by the fourth adhesive ADH4. The fourth adhesive ADH4 can include an optical clear adhesive.

[0053] The sensor part SP can be disposed in the transmissive area PA. For example, the sensor part SP can include a camera sensor, an illuminance sensor, a motion sensor, and a fingerprint sensor, etc. The sensor part SP can be located in a sensor hole SH defined in the display module DM. The sensor hole SH can overlap the transmissive area PA. When viewed on a plane, the sensor hole SH can have a circular shape. The sensor hole SH can extend along the third direction DR3. Specifically, the sensor hole SH can extend from the buffer layer CSL to the polarizing film POL along the third direction DR3.

[0054] Figure 3 is Figure 2 An exemplary cross-sectional view of a display panel shown in FIG.

[0055] Referring to Figure 3 , the display panel DP can include a substrate SUB, a pixel layer PXL disposed on the substrate SUB, and a thin film encapsulation layer TFE disposed on the substrate SUB to cover the pixel layer PXL.

[0056] The substrate SUB can include at least one plastic film. The substrate SUB is a flexible substrate, and can include a plastic substrate, a glass substrate, a metal substrate, or an organic / inorganic composite material substrate, etc.

[0057] The pixel layer PXL can be disposed on the substrate SUB. The pixel layer PXL can include a plurality of pixels, and each of the pixels can include a light emitting element.

[0058] The thin film encapsulation layer TFE can include at least two inorganic layers and an organic layer disposed between the inorganic layers. The inorganic layers can include an inorganic material, and can protect the pixel layer PXL from moisture / oxygen. The organic layer can include an organic material, and can protect the pixel layer PXL from impurities such as dust particles.

[0059] A hole H can be defined in the display panel DP. The hole H can be a part of the sensor hole SH. The hole H can have a circular shape when viewed in a plan view. The sensor portion SP can be disposed to pass through the hole H.

[0060] Figure 4 is a perspective view of a cutting device according to an embodiment of the present application. Figure 5 is a sectional view taken along line II-II' in Figure 4 .

[0061] Referring to Figure 4 and Figure 5 , the cutting device CUD can be used to process the display module DM (see Figure 2 ). For example, the cutting device CUD can form the sensor hole SH (see Figure 2 ) in the display module DM (see Figure 2 ) using laser cutting. The cutting device CUD can include a stage ST, a suction portion SCP, a gas injection portion GI, a laser irradiation portion LD, and a support portion SUP.

[0062] The stage ST can support the display module DM. The stage ST can have sufficient rigidity. For example, the stage ST can include a metal material.

[0063] The display module DM can be disposed on the stage ST. The stage ST can have a plate shape. Specifically, the stage ST can have a short side extending in a first direction DR1, and can have a long side extending in a second direction DR2.

[0064] The stage ST can have a rectangular shape when viewed in a plan view. The short side of the stage ST can be longer than the short side of the display module DM, and the long side of the stage ST can be longer than the long side of the display module DM. That is, the stage ST can have a larger area than the display module DM when viewed in a plan view.

[0065] The stage ST can include an upper surface UF and a lower surface BF that is an opposite surface of the upper surface UF. The display module DM can be disposed on the upper surface UF of the stage ST. The lower surface BF of the stage ST can be connected to the support portion SUP, which will be described later. The stage ST can have a predetermined thickness in a third direction DR3.

[0066] A through-hole PH can be defined in the stand ST to extend in a vertical direction from the upper surface UF to the bottom surface BF. For example, the through-hole PH can be adjacent to any of the corners of the stand ST. The through-hole PH can overlap with the transmissive region PA (see FIG. 1) of the display device DD. When viewed on a plane, the through-hole PH can have a circular shape. The through-hole PH can have a cylindrical shape extending in the third direction DR3. Although a case where one through-hole PH having a cylindrical shape is defined in the stand ST is shown, this is merely an example, and the shape and number of the through-hole PH are not limited thereto. For example, depending on the structure of the sensor arranged in the display device DD, a plurality of through-holes PH can also be formed, or other shapes other than a cylinder can also be formed. Figure 1

[0067] A first gas flow passage GP1 and a second gas flow passage GP2 can be defined in the stand ST to communicate with the through-hole PH. The first gas flow passage GP1 can extend from the through-hole PH at a first angle A1 with respect to the vertical direction. Specifically, the center line CL and a first extension line EL1 can intersect at one point. Here, the center line CL can be an imaginary line parallel to the third direction DR3 and passing through the center of the through-hole PH. The first extension line EL1 can be an imaginary line parallel to the extension direction of the first gas flow passage GP1 and passing through the center of the first gas flow passage GP1.

[0068] The center line CL and the first extension line EL1 can form the first angle A1. The first angle A1 can be smaller than a right angle, and can preferably be 30° to 80°.

[0069] The first gas flow passage GP1 can have a circular tube shape. One end of the first gas flow passage GP1 can communicate with the through-hole PH, and the other end of the first gas flow passage GP1 can be connected to a gas injection portion GI to be described later. One end of the first gas flow passage GP1 can be arranged at a position higher than the other end thereof with reference to the third direction DR3.

[0070] A plurality of first gas flow passages GP1 can be defined in the stand ST. For example, two first gas flow passages GP1 can be defined in the stand ST. The two first gas flow passages GP1 can be symmetrical with reference to the center line CL.

[0071] The second gas flow passage GP2 can extend from the through-hole PH at a second angle A2 with respect to the vertical direction. Specifically, the center line CL and a second extension line EL2 can intersect at one point. Here, the second extension line EL2 can be an imaginary line parallel to the extension direction of the second gas flow passage GP2 and passing through the center of the second gas flow passage GP2.

[0072] ​The center line CL and the second extension line EL2 can form a second angle A2. For example, the second angle A2 can be a right angle. One end of the second gas flow passage GP2 can communicate with the through-hole PH. The other end of the second gas flow passage GP2 can be connected to the gas injection portion GI. Since the second angle A2 is a right angle, the one end and the other end of the second gas flow passage GP2 can be arranged at the same height.

[0073] The second gas flow passage GP2 can be arranged closer to the upper surface UF of the stage ST than the first gas flow passage GP1. The one end of the second gas flow passage GP2 can be arranged above the one end of the first gas flow passage GP1 with reference to the third direction DR3.

[0074] The gas injection portion GI can be arranged adjacent to the stage ST. The gas injection portion GI can supply a first gas and a second gas to the first gas flow passage GP1 and the second gas flow passage GP2, respectively. The first gas and the second gas can be the same type of gas.

[0075] Specifically, the gas injection portion GI can be connected to the first gas flow passage GP1 through a first connection passage CP1. The gas injection portion GI can be connected to the second gas flow passage GP2 through a second connection passage CP2.

[0076] The pressure of the first gas supplied to the first gas flow passage GP1 by the gas injection portion GI can be different from the pressure of the second gas supplied to the second gas flow passage GP2 by the gas injection portion GI. For example, the pressure of the second gas can be greater than the pressure of the first gas. In this regard, this will be described later.

[0077] The suction portion SCP can fixedly arrange the display module DM on the upper surface UF of the stage ST. For example, the suction portion SCP can fix the display module DM on the stage ST with a suction force.

[0078] The suction portion SCP can include a plurality of suction passages SU. The suction passages SU can be defined in the upper surface UF of the stage ST. Specifically, the suction passages SU can extend from the upper surface UF toward the lower surface BF along the third direction DR3. When viewed in a plan view, the suction passages SU can have a circular shape. Each of the suction passages SU can have a circular tube shape.

[0079] The suction passages SU can be arranged to be spaced apart from each other along the first direction DR1 and the second direction DR2. The suction passages SU can be connected to a suction motor (not shown). Each of the suction passages SU can generate a suction force as the suction motor is operated. The display module DM fixedly arranged on the upper surface UF of the stage ST can be fixed by this suction force.

[0080] The laser irradiation portion LD can irradiate the display module DM (see FIG. 1) arranged on the upper surface UF of the stage ST with laser light. The laser light can be a laser beam. The laser light can be a laser beam having a wavelength of 1064 nm.Figure 2 ) of the portion of the display module DM overlapping with the through-hole PH. That is, the laser irradiation section LD can form the sensor hole SH in the display module DM by irradiating laser toward the display module DM arranged on the stage ST (see Figure 2 ) can be spaced upward from the upper surface UF of the stage ST.

[0081] The nozzle section NOP can be spaced upward from the upper surface UF, and can spray the third gas toward the through-hole PH. The nozzle section NOP can have a circular tube shape. The nozzle section NOP can spray the gas to remove smoke, dust, or the like generated in the cutting process when the display module DM is cut.

[0082] The support section SUP can be arranged below the stage ST. The support section SUP can support the stage ST. The support section SUP can accommodate the portion of the display module DM cut by the cutting process.

[0083] The support section SUP can include a bottom section BP and a side wall section SWP. The bottom section BP can be arranged on the ground. The bottom section BP can have a shape corresponding to the stage ST. For example, the bottom section BP can have a short side extending in the first direction DR1, and can have a long side extending in the second direction DR2. The bottom section BP can have a rectangular shape when viewed on a plane.

[0084] The side wall section SWP can extend from an edge of the bottom section BP in a third direction DR3. An end portion of the side wall section SWP can be in contact with the lower surface BF of the stage ST. Thereby, the short side of the bottom section BP can be connected to the short side of the stage ST, and the long side of the bottom section BP can be connected to the long side of the stage ST.

[0085] The support section SUP can include an accommodation section EP defined by the bottom section BP and the side wall section SWP. The accommodation section EP can communicate with the through-hole PH defined in the stage ST. Specifically, a portion of the accommodation section EP communicating with the through-hole PH can be exposed to the outside, and the remaining portion can not be exposed to the outside through the stage ST.

[0086] In the above description, although a case where the support section SUP is formed separately from the stage ST and the support section SUP is connected to the stage ST is described, it is not limited thereto. The support section SUP and the stage ST can be integrally formed.

[0087] Figure 6 is a flowchart illustrating a method of manufacturing a display device according to an embodiment of the present application. Figures 7 to 10 is a view illustrating each process of a method of manufacturing a display device according to an embodiment of the present application.

[0088] Hereinafter, a description will be given with reference to Figures 6 to 10A method of manufacturing a display device using the aforementioned cutting apparatus is described in detail. The following process can be a process performed before the window WIN is disposed on the polarizing film POL of the display module DM. For ease of explanation, a detailed layer structure of the display module DM is omitted in Figures 7 to 10

[0089] Referring to Figure 6 and Figure 7 , in step S1, the display module DM can be disposed on the upper surface UF of the stage ST. The area of the upper surface UF of the stage ST can be greater than the area of the display module DM. For example, the length of the short side of the upper surface UF can be greater than the length of the short side of the display module DM. Although not shown, the length of the long side of the stage ST can be greater than the length of the long side of the display module DM. Accordingly, the stage ST can more stably support the display module DM.

[0090] While the display module DM is disposed on the upper surface UF of the stage ST, the suction portion SCP can be operated. Specifically, a plurality of suction passages SU can be disposed below the display module DM. The suction passages SU can suck air as the suction motor is operated. Here, the air can be air present between the display module DM and the upper surface UF of the stage ST. Thereby, the display module DM can be stably fixed to the upper surface UF of the stage ST by the suction force.

[0091] Referring to Figure 6 and Figure 8 , in operation S2, the first region PP1 can be cut from the display module DM. The first region PP1 can be defined as a portion of the display module DM overlapping the through hole PH. The laser irradiation portion LD can cut the first region PP1 from the display module DM by irradiating laser light to the boundary of the first region PP1.

[0092] In step S3, the gas injection portion GI can inject the first gas inside the through hole PH through the first gas flow passage GP1. Step S3 can be performed simultaneously with step S2. Specifically, when the laser irradiation portion LD irradiates laser light to the boundary of the first region PP1, the gas injection portion GI can inject the first gas inside the through hole PH through the first gas flow passage GP1.

[0093] The first gas can move to below the first region PP1 through the inner circumferential surface IF of the stage ST. Thereby, the first pressure P1 can be formed below the first region PP1.

[0094] In step S3, the nozzle portion NOP can inject the third gas above the first region PP1. Through the third gas injected by the nozzle portion NOP, fume generated in the process of cutting the first region PP1 can be removed. Through the third gas, the second pressure P2 can be formed above the first region PP1. ​

[0095] The first pressure P1 and the second pressure P2 can have the same magnitude. The first pressure P1 and the second pressure P2 can act in opposite directions. Thus, during the laser processing, the first region PP1 can be kept horizontal.

[0096] According to the present embodiment, when the first region PP1 is cut, the gas injection portion GI ejects the first gas through the first gas flow passage GP1, thereby canceling the pressure applied to the first region PP1 by the nozzle portion NOP, so that the first region PP1 can be stably kept horizontal. Thus, the laser irradiation portion LD can stably irradiate laser to the first region PP1, thereby the yield of the laser processing can be reduced, and the process yield of the display device can be improved.

[0097] Referring to Figure 6 and Figure 9 When the process of cutting the first region PP1 is finished, the nozzle portion NOP stops the operation, and the gas injection portion GI can not eject the first gas to the first gas flow passage GP1. The cut first region PP1 can not be separated from the display module DM due to the adhesive component of the display module DM. For example, the adhesive component can be the first to third adhesives ADH1 to ADH3 arranged inside the display module DM (see Figure 2 ).

[0098] In step S4, the gas injection portion GI can eject the second gas to the through hole PH through the second gas flow passage GP2. The ejected second gas can collide with at least a portion of the first region PP1. In order to separate the first region PP1 from the display module DM, the pressure of the ejected second gas can be high. For example, the pressure of the second gas can be greater than 10 kPa.

[0099] Referring to Figure 10 , the first region PP1 can be completely separated from the display module DM by the second gas. The separated first region PP1 can freely fall and move to the accommodation portion EP. After step S4 is finished, the suction portion SCP can stop the operation. The display module DM can be separated from the stage ST.

[0100] Although not shown, after step S4, a window WIN can be arranged on the polarizing film POL of the display module DM. As a result, in the display device DD, the sensor hole SH can be formed by the portion cut by the laser processing and the window WIN (see Figure 2 ).

[0101] According to the embodiment of the present application, since the gas injection portion GI injects the second gas through the second gas flow passage GP2 at a strong pressure, the first region PP1 that has not been separated due to the adhesive component inside the display module DM can be effectively removed from the display module DM. Thus, the yield of the display device can be reduced, and the production can be increased.

[0102] The above-described embodiments are merely illustrative of the present application and various modifications and changes can be made by those skilled in the art without departing from the spirit and scope of the present application as recited in the appended claims. The embodiments disclosed in the present application are not intended to limit the technical idea of the present application, but should be interpreted as all technical ideas within the scope of the appended claims and their equivalents are included in the scope of the present application.

Claims

1. A cutting device, including A platform, including an upper surface and a lower surface opposite to the upper surface, wherein the platform defines at least one through hole extending vertically from the upper surface to the lower surface; A laser irradiation section, spaced upward from the upper surface, irradiates a laser onto the boundary of the portion of a display module disposed on the upper surface that overlaps with the through-hole, thereby cutting the portion overlapping the through-hole from the display module; and Gas injection section, adjacent to the platform, in, The platform is defined by a first airflow channel and a second airflow channel. The first airflow channel extends from the through-hole at a first angle relative to the vertical direction, and the second airflow channel extends from the through-hole at a second angle relative to the vertical direction. The gas injection unit is configured to inject a first gas and a second gas into the first airflow channel and the second airflow channel respectively in different steps, each of the first gas and the second gas being provided into the interior of the through hole through the first airflow channel or the second airflow channel and moving below the portion inside the through hole through the inner circumferential surface of the through hole.

2. The cutting device according to claim 1, wherein, The second airflow channel is arranged closer to the upper surface than the first airflow channel.

3. The cutting device according to claim 1, wherein, The first angle is an acute angle.

4. The cutting device according to claim 1, wherein, The second angle is a right angle.

5. The cutting device according to claim 1, further comprising: The nozzle is spaced upward from the upper surface and injects a third gas toward the through hole.

6. The cutting device according to claim 5, wherein, The injection of the first gas and the injection of the third gas are performed simultaneously, and The first pressure formed by the first gas below the display module and the second pressure formed by the third gas above the display module have the same magnitude.

7. The cutting device according to claim 1, wherein, The third pressure formed by the second gas below the display module is greater than 10 kPa.

8. The cutting device according to claim 1, wherein, When viewed on a flat surface, the through-hole has a circular shape.

9. The cutting device according to claim 1, further comprising: Support portion, arranged below the platform, and The support portion includes: bottom, The sidewall portion extends vertically from the edge of the bottom and contacts the lower surface; and The receiving portion is defined by the sidewall portion and the bottom portion. The receiving portion is connected to the through hole.

10. The cutting device according to claim 1, further comprising: A suction unit is disposed on the upper surface and suctions the air between the upper surface and the display module disposed on the upper surface to fix the display module to the upper surface.

11. The cutting apparatus according to claim 10, wherein, The suction unit includes multiple suction channels spaced apart from each other, and Each of the suction channels extends from the upper surface toward the lower surface.

12. The cutting device according to any one of claims 1 to 11, wherein, The second angle is different from the first angle.

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