Stamp cleaning apparatus and stamp cleaning method

Abstract

To provide an apparatus and a method for easily removing a light emitting element or the like remaining on a stamp.SOLUTION: The present invention relates to a stamp cleaning apparatus and a method of the same, and the stamp cleaning apparatus includes: a first rolling part; and a second rolling part spaced apart from the first rolling part. The stamp cleaning apparatus includes: a roll-to-roll unit structured to move an adhesive film from the first rolling part to the second rolling part; and a cleaning unit that is disposed between the first rolling part and the second rolling part, and is structured to clean the contaminants of the stamp by stretching the adhesive film, and make the stretched adhesive film adhere to the contaminants adhering to the stamp. In the roll-to-roll unit, the adhesive film to which the contaminants adhere is wound around the second rolling part.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a stamp cleaning device and a stamp cleaning method using a stretching device.

Background Art

[0002] With the development of multimedia, the importance of display devices has been increasing. Accordingly, various types of display devices such as organic light emitting display (OLED) and liquid crystal display (LCD) are being used.

[0003] Devices for displaying an image of a display device include display panels such as a light emitting display panel and a liquid crystal display panel. Among them, the light emitting display panel may include a light emitting diode (LED), and the light emitting diode includes an organic light emitting diode using an organic substance as a fluorescent substance or an inorganic light emitting diode using an inorganic substance as a fluorescent substance.

[0004] Generally, an inorganic light emitting diode is manufactured by an epitaxial growth method on a wafer. The inorganic light emitting diode manufactured by the epitaxial growth method undergoes a process of separating from the wafer and transferring to another target substrate. That is, transfer is a series of acts of transferring single or multiple micro LEDs to a target substrate.

[0005] As a conventional method for transferring an LED single chip, a pick and place equipment has been applied in a packaging process. However, as the size of the LED becomes as small as several microns, it is difficult for the conventional pick and place to cope with the working speed, and there is a limit in precise transfer.

[0006] Currently, as methods for transferring multiple micro LEDs, two methods of direct transfer and printing transfer are representative.

[0007] Direct transfer is a technique of directly bonding the material or thin film to be transferred to the target substrate, and printing transfer is defined as a technique that utilizes an intermediate medium such as an electrostatic or bonding stamp.

[0008] Particularly, in the transfer using a stamp, continuously maintaining the adhesiveness of the stamp acts as a very important factor.

SUMMARY OF THE INVENTION

PROBLEM TO BE SOLVED BY THE INVENTION

[0009] The problem to be solved by the present invention is to provide an apparatus and a method for easily removing a light-emitting element or the like remaining on a stamp by transferring an adhesive film arranged such that the adhesive surface faces upward in a roll-to-roll manner.

[0010] The problems of the present invention are not limited to the problems mentioned above, and other technical problems not mentioned will be clearly understood by those skilled in the art from the following description.

MEANS FOR SOLVING THE PROBLEM

[0011] The stamp cleaning apparatus according to an embodiment for solving the above problems includes a first rolling unit and a second rolling unit arranged separately from the first rolling unit, and a roll-to-roll unit that moves an adhesive film from the first rolling unit to the second rolling unit, and a cleaning unit that is arranged between the first rolling unit and the second rolling unit, stretches the adhesive film, and adheres the stretched adhesive film to contaminants adhered to the stamp to clean the contaminants of the stamp. The roll-to-roll unit can wind the adhesive film with the contaminants adhered thereto around the second rolling unit.

[0012] The cleaning unit includes a support portion that supports the adhesive film and a drive portion that can move up and down, and the support portion may include a support chuck that fixes the adhesive film.

[0013] The drive portion includes an upper drive portion and a lower drive portion that can move up and down. The upper drive portion can move downward, and the lower drive portion can move upward to fix the adhesive film.

[0014] The support portion further includes a vertically movable portion that can move up and down. When the drive portion fixes the adhesive film, the vertically movable portion can move upward to stretch the adhesive film in the circumferential direction.

[0015] When the drive portion fixes the adhesive film, the roll-to-roll unit and the drive portion can move downward to stretch the adhesive film in the circumferential direction.

[0016] The first rolling portion supplies a laminated film with a release paper attached to the adhesive film, and the release paper can be arranged in the outer direction of the first rolling portion.

[0017] The roll-to-roll unit may further include a third rolling portion that separates the release paper from the laminated film.

[0018] The roll-to-roll unit is arranged between the first rolling portion and the cleaning unit, and may further include a first guide roller that guides the adhesive film and is arranged between the second rolling portion and the cleaning unit, and a second guide roller that guides the adhesive film.

[0019] The upper drive portion may include an opening wider than the upper surface of the support portion at a position overlapping the support portion.

[0020] The contaminants may include any one or more of one or more light-emitting elements and dust.

[0021] The cleaning unit is in the shape of a roller and can move up, down, left, and right.

[0022] The cleaning unit can move in the direction in which the stamp is located so that the adhesive film adheres to the stamp, and stretch the adhesive film in the circumferential direction.

[0023] The cleaning unit can adhere to the stamp and move left and right.

[0024] The first rolling part, the second rolling part, and the third rolling part can rotate in the same direction.

[0025] In another embodiment of the present invention, the stamp cleaning method includes that the roll-to-roll unit supplies the adhesive film onto the cleaning unit in a roll-to-roll manner, the cleaning unit stretches the adhesive film, adheres the contaminants of the stamp to the adhesive surface of the adhesive film for cleaning, and the roll-to-roll unit recovers the adhesive film to which the contaminants are adhered.

[0026] In one embodiment, supplying onto the cleaning unit means that the roll-to-roll unit can separate the release paper from the laminate film wound around the first rolling part by the third rolling part and transfer it to the second rolling part.

[0027] In one embodiment, adhering the contaminants of the stamp for cleaning means that the cleaning unit moves the upper driving part downward and the lower driving part upward to fix the adhesive film, raises the support part supporting the adhesive film upward to stretch the adhesive film in the circumferential direction, and while adhering and peeling the contaminants of the stamp to the adhesive surface of the adhesive film, the adhesive film can be fixed by using the support chuck on the support part so as not to be lifted with the stamp.

[0028] In one embodiment, cleaning by adhering contaminants on the stamp may be performed as follows: the cleaning unit moves the upper driving part downward and the lower driving part upward to fix the adhesive film, and then the roll-to-roll unit, the upper driving part, and the lower driving part move downward to stretch the adhesive film in the circumferential direction. While the contaminants on the stamp are adhered to and peeled off from the adhesive surface of the adhesive film, the support chuck on the support part may be used to fix the adhesive film so that it does not rise with the stamp.

[0029] In one embodiment, the cleaning unit has a roller shape. When cleaning by adhering contaminants on the stamp, the cleaning unit moves up and down on the stamp side, contacts the stamp, and moves left and right on one surface of the stamp to clean the contaminants on the stamp.

[0030] Before cleaning by adhering contaminants on the stamp, it may further include stopping the operation of the roll-to-roll unit.

Advantages of the Invention

[0031] According to an embodiment of the present invention, by removing light-emitting elements or the like remaining on the stamp, the number of times the stamp can be used can be increased, the stamp replacement cycle can be extended, and the product production time can be extended.

[0032] Also, by attaching the adhesive film to the stamp without wrinkles in the adhesive film, the cleaning efficiency of the stamp can be improved.

[0033] The effects according to the embodiments are not limited to the contents exemplified above, and more diverse effects are included in this specification.

Brief Description of the Drawings

[0034]

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Embodiments for Carrying Out the Invention

[0035] The advantages, features, and the methods for achieving them of the present invention will become clear by referring to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and can be realized in various different forms. These embodiments are merely provided to complete the disclosure of the present invention and to fully inform those with ordinary knowledge in the technical field to which the present invention pertains of the scope of the invention. The present invention is defined only by the scope of the claims.

[0036] When an element or layer is referred to as being "on" another element or layer, it includes all cases where another layer or element is interposed immediately above or in the middle of the other element. Throughout the specification, the same reference numerals shall refer to the same components. Since the shapes, sizes, ratios, angles, numbers, etc. disclosed in the drawings for explaining the embodiments are exemplary, the present invention is not limited to the illustrated matters.

[0037] First, second, etc. are used to describe various components, but of course these components are not limited by these terms. These terms are merely used to distinguish one component from another. Thus, it goes without saying that the first component referred to below may be the second component within the technical idea of the present invention.

[0038] The respective features of the various embodiments of the present invention can be partially or wholly combined or combined with each other, enabling various technical linkages and drives, and each embodiment can be implemented independently of each other or in cooperation with each other.

[0039] Hereinafter, specific embodiments will be described with reference to the accompanying drawings.

[0040] FIG. 1 is a perspective view showing the configuration of a stamp cleaning device according to an embodiment. FIG. 2 is a cross-sectional view taken along the dotted line in FIG. 1. FIG. 3 is a perspective view for explaining the structure of a laminate film.

[0041] Referring to FIGS. 1 and 2, the stamp cleaning device SC1 is a device for removing a light-emitting element LE or the like attached to the stamp 10, and may include a roll-to-roll unit 100 and a cleaning unit 200.

[0042] The roll-to-roll unit 100 supplies an adhesive film F for adhering and separating the light-emitting element LE attached to the stamp in a roll-to-roll manner.

[0043] The roll-to-roll unit 100 may include a first rolling section 110, a second rolling section 120, and a third rolling section 130. The first rolling section 110 and the second rolling section 120 are arranged side by side, and the third rolling section 130 is arranged above the first rolling section 110. The roll-to-roll unit 100 may further include a first guide roller 140 and a second guide roller 150.

[0044] Referring to FIG. 3, the laminate film C is formed by attaching a release paper R to an adhesive film F. The adhesive film F is a film with an adhesive S applied on one side, and the release paper R is arranged on the adhesive S to prevent foreign substances from adhering to the adhesive S.

[0045] The adhesive film F can be formed of a stretchable and elastic polymer material. The stretchable and elastic polymer material can include, for example, polyolefin, polyvinyl chloride (PVC), elastomeric silicone, elastomeric polyurethane, elastomeric polyisoprene, and the like.

[0046] The adhesive S can include, for example, any one or more of urethane acrylate, epoxy acrylate, and polyester acrylate.

[0047] In the roll-to-roll unit 100, the first rolling section 110, the second rolling section 120, and the third rolling section 130 can operate synchronously with each other, but are not limited thereto.

[0048] The first rolling unit 110 continuously feeds out the laminated film C that is pre-wound while rotating in one direction, for example, clockwise, on the spot. The third rolling unit 130 winds only the release paper R from the laminated film C fed out from the first rolling unit 110 while rotating in one direction, for example, clockwise, on the spot. Thereby, the release paper R is removed from the laminated film C by the roll-to-roll unit 100, and the adhesive S is exposed on the upper surface of the adhesive film F. One end of the adhesive film F is wound around the second rolling unit 120. The second rolling unit 120 continuously winds the adhesive film F fed out from the first rolling unit 110 while rotating in one direction, for example, clockwise, on the spot.

[0049] A cleaning unit 200 is disposed between the first rolling unit 110 and the second rolling unit 120. Therefore, the adhesive film F fed out from the first rolling unit 110 and having the adhesive S exposed on its upper surface is continuously supplied to the cleaning unit 200.

[0050] The first guide roller 140 is disposed between the first rolling unit 110 and the cleaning unit 200, and guides and arranges the adhesive film F from the first rolling unit 110 to the cleaning unit 200.

[0051] The second guide roller 150 is disposed between the cleaning unit 200 and the second rolling unit 120, and guides and arranges the adhesive film F from the cleaning unit 200 to the second rolling unit 120.

[0052] The cleaning unit 200 may include a support portion 210 and a drive portion 220.

[0053] The support portion 210 supports the adhesive film F. The support portion 210 may include a support chuck 210-C. The support chuck 210-C can be any one of an electrostatic chuck, an adhesive chuck, a vacuum chuck, and a porous vacuum chuck. The support chuck 210-C can adsorb and fix the rear surface of the adhesive film F disposed on the support portion 210.

[0054] In one embodiment, the support portion 210 is movable up and down. For example, the support portion 210 may include a support plate 211 and a vertical movement portion 212. The support plate 211 has an upper surface in the shape of a disc or a polygonal panel type. The adhesive film F may be disposed on the upper surface of the support plate 211.

[0055] The vertical movement portion 212 is assembled to the back surface of the support plate 211, and the other side is assembled to a pneumatic or hydraulic pressure regulator. Therefore, the vertical movement portion 212 can move the support plate 211 in one direction or the other direction of the third direction by the pneumatic or hydraulic pressure regulator.

[0056] The driving portion 220 is movable up and down and is disposed so as to surround the support portion 210. The driving portion 220 may include an upper driving portion 221 and a lower driving portion 222. Further, the driving portion 220 may further include a buffer member 223.

[0057] The upper driving portion 221 is movable up and down and may have an opening 221 - O at the center. The size of the opening 221 - O may be larger than the size of the stamp 10. Also, the size of the opening 221 - O may be larger than the size of the support portion 210.

[0058] The lower driving portion 222 is disposed under the upper driving portion 221 and is movable up and down. The lower driving portion 222 can move upward and the upper driving portion 221 can move downward so that the upper driving portion 221 and the lower driving portion 222 can come into contact with each other. The adhesive film F is disposed on the lower driving portion 222, and when the lower driving portion 222 moves upward and the upper driving portion 221 moves downward, the adhesive film F can be fixed.

[0059] The buffer member 223 is disposed between the upper driving portion 221 and the lower driving portion 222. The buffer member 223 is formed of an elastic material and can mitigate the impact generated when the upper driving portion 221 and the lower driving portion 222 come into contact. For example, the buffer member 223 may be an O - Ring.

[0060] According to one embodiment, while the adhesive film F supplied by the roll-to-roll unit 100 is fixed by the upper drive unit 221 and the lower drive unit 222, the support unit 210 moves upward to stretch the adhesive film F. When the adhesive film F is stretched, wrinkles in the adhesive film F can be removed. Therefore, when the adhesive film F is brought into contact with the lower surface of the stamp 10 in a stretched state, all the light-emitting elements LE and dust arranged on the lower surface of the stamp 10 can be removed.

[0061] Also, according to one embodiment, while the adhesive film F is being supplied by the roll-to-roll unit 100, since the adhesive surface FS of the adhesive film F does not come into direct contact with each member, adhesion of foreign substances to the adhesive surface FS of the adhesive film F can be minimized.

[0062] FIG. 4 is a flowchart for explaining a stamp cleaning method according to one embodiment.

[0063] A step (S110) in which the roll-to-roll unit 100 peels the release paper from the laminate film and supplies the adhesive film F onto the cleaning unit in a roll-to-roll manner, a step (S120) in which the cleaning unit supports the adhesive film while adhering and cleaning the residual substances of the stamp to the adhesive surface of the adhesive film, and a step (S130) in which the roll-to-roll unit recovers the adhesive film with the residual substances adhering to the adhesive surface are included.

[0064] FIGS. 5 to 11 are diagrams schematically showing a step of the stamp cleaning method according to one embodiment. The stamp cleaning device in FIGS. 5 to 11 corresponds to the stamp cleaning device in FIG. 2.

[0065] Hereinafter, a stamp cleaning method according to one embodiment will be described with reference to FIGS. 4 to 11.

[0066] First, referring to FIG. 5, the first rolling part 110 of the roll-to-roll unit 100 peels the release paper R of the laminate film C from the adhesive film F and supplies the adhesive film F onto the cleaning unit 200 in a roll-to-roll manner (S110 in FIG. 4). For example, the laminate film C is wound around the first rolling part 110 of the roll-to-roll unit 100, one end of the release paper R of the laminate film C is partially wound around the third rolling part 130, and one end of the adhesive film F from which the release paper R has been peeled is wound around the second rolling part 120. When the first rolling part 110 rotates in one direction, for example, clockwise, the second rolling part 120 and the third rolling part 130 can rotate synchronously. The second rolling part 120 and the third rolling part 130 can rotate in the same direction (clockwise) as the first rolling part 110. Also, the first guide roller 140 and the second guide roller 150 disposed between the first rolling part 110 and the second rolling part 120 also rotate in the same direction (clockwise) as the first rolling part 110. Therefore, the release paper R of the laminate film C is peeled from the adhesive film F, and the adhesive surface FS of the adhesive film F is exposed. The adhesive film F with the adhesive surface FS thus exposed is transferred to the cleaning unit 200 along the first guide roller 140. At this time, the first guide roller 140 disposed between the first rolling part 110 and the cleaning unit 200 assists in the transfer of the adhesive film F.

[0067] The laminate film C is arranged such that the adhesive film F faces the first rolling part 110 and the release paper R faces the outside, and the third rolling part 130 is disposed on the first rolling part 110. Therefore, while the adhesive film F from which the release paper R has been peeled is being transferred to the cleaning unit 200, the adhesive surface FS of the adhesive film F does not come into contact with other units such as guide rollers, so the adhesive force can be maintained.

[0068] Next, referring to FIGS. 6 to 9, the cleaning unit 200 supports the adhesive film F while adhering and cleaning the residual substance of the stamp 10 on the adhesive surface of the adhesive film F (S120 in FIG. 4).

[0069] For example, referring to FIG. 6, the upper drive unit 221 and the lower drive unit 222 are moved up and down on the adhesive film F side to fix the adhesive film F. The upper drive unit 221 moves downward, and the lower drive unit 222 moves upward to hold the adhesive film F from above and below to fix it. While the adhesive film F is fixed by the upper drive unit 221 and the lower drive unit 222, the roll-to-roll unit 100 may stop operating. After the operation of the roll-to-roll unit 100 stops, the upper drive unit 221 and the lower drive unit 222 can move.

[0070] Referring to FIG. 7, the up-and-down moving part 212 of the support part 210 moves upward, and the adhesive film F supported by the support plate 211 of the support part 210 is pulled in the outer peripheral direction and stretched. Thereby, even if wrinkles or the like occur in the adhesive film F, they are stretched, and the stamp 10 can be effectively cleaned.

[0071] Referring to FIGS. 8 and 9, the stamp transfer head 20 moves the stamp 10. The stamp transfer head 20 moves downward until the stamp 10 passes through the opening 221-O of the upper drive unit 221 and contacts the adhesive surface FS of the adhesive film F disposed on the support plate 211. Thereafter, the stamp transfer head 20 lifts the stamp 10.

[0072] At this time, the adhesive film F can be fixed using the support chuck 210-C above the support plate 211 so that the adhesive film F does not come off together with the stamp 10 when lifted.

[0073] Through this process, the stamp cleaning device SC1 can clean the stamp 10 by peeling off contaminants such as the light-emitting element LE remaining on one surface of the stamp 10 from one surface of the stamp 10.

[0074] Referring to FIGS. 10 and 11, the roll-to-roll unit 100 recovers the adhesive film with contaminants attached to the adhesive surface of the adhesive film F (S130 in FIG. 4).

[0075] For example, referring to FIG. 10, the upper drive unit 221 and the lower drive unit 222 are moved up and down to release the fixation of the adhesive film F. The upper drive unit 221 moves upward, and the lower drive unit 222 moves downward to release the fixation of the adhesive film F. Also, the chuck function of the support chuck 210-C on the upper part of the support plate 211 is released, and the vertical movement unit 212 moves downward to enable the transfer of the adhesive film F.

[0076] Next, referring to FIG. 11, the first rolling unit 110, the second rolling unit 120, the third rolling unit 130, the first guide roller 140, and the second guide roller 150 are rotated in one direction (clockwise). Thereby, the adhesive film F with contaminants attached is wound around the second rolling unit 120 and collected.

[0077] FIGS. 12 to 19 are diagrams schematically showing a step of a stamp cleaning method according to another embodiment.

[0078] FIG. 12 is a cross-sectional view taken along the dotted line of FIG. 1 according to another embodiment. FIG. 12 is different from FIG. 2 in that the cleaning unit 200 does not move up and down, and the roll-to-roll unit 100 can move up and down. Also, FIG. 12 is different from the stamp cleaning device SC1 of FIG. 2 in that the cleaning unit 200 includes a support plate 211 and a support chuck 211-C and does not include a vertical transfer unit.

[0079] Referring to FIG. 12, the first rolling unit 110 of the roll-to-roll unit 100 peels the release paper R of the laminate film C from the adhesive film F and supplies the adhesive film F onto the cleaning unit 200 in a roll-to-roll manner (S110 in FIG. 4). Since the supply operation has been described with reference to FIG. 5, detailed description is omitted.

[0080] Next, referring to FIGS. 13 to 16, the cleaning unit 200 supports the adhesive film F while adhering and cleaning the residual substances of the stamp 10 to the adhesive surface of the adhesive film F (S120 in FIG. 4).

[0081] For example, referring to FIG. 13, the upper driving unit 221 and the lower driving unit 222 are moved up and down on the side of the adhesive film F to fix the adhesive film F. The upper driving unit 221 moves downward, and the lower driving unit 222 moves upward to fix the adhesive film F by pressing it from above and below. The roll-to-roll unit 100 may stop operating while the adhesive film F is fixed by the upper driving unit 221 and the lower driving unit 222. After the operation of the roll-to-roll unit 100 stops, the upper driving unit 221 and the lower driving unit 222 can move.

[0082] Referring to FIG. 14, the driving unit 220 and the roll-to-roll unit 100 move downward, and the adhesive film F supported by the support plate 211 of the support unit 210 is pulled in the outer peripheral direction and stretched. As a result, even if wrinkles or the like occur in the adhesive film F, they are stretched, and the stamp 10 can be effectively cleaned.

[0083] Referring to FIGS. 15 and 16, the stamp transfer head 20 moves downward until the stamp 10 passes through the opening 221-O of the upper driving unit 221 and contacts the adhesive surface FS of the adhesive film F disposed on the support plate 211. Then, the stamp transfer head 20 lifts the stamp 10. At this time, the adhesive film F can be fixed using the support chuck 210-C above the support plate 211 so that the adhesive film F does not stick and lift together with the stamp 10.

[0084] Through this process, the stamp cleaning device SC1 can clean the stamp 10 by peeling off contaminants such as the light-emitting element LE remaining on one surface of the stamp 10 from one surface of the stamp 10.

[0085] Thereafter, referring to FIGS. 17 to 19, the roll-to-roll unit 100 recovers the adhesive film with contaminants attached to the adhesive surface FS of the adhesive film F (S130 in FIG. 4).

[0086] For example, referring to FIG. 17, the drive unit 220 and the roll-to-roll unit 100 move upward and return to their original positions.

[0087] Next, referring to FIG. 18, the upper drive unit 221 and the lower drive unit 222 are moved up and down to release the fixing of the adhesive film F. Since the release of the fixing of the adhesive film F has been described with reference to FIG. 10, detailed description thereof is omitted.

[0088] Next, referring to FIG. 19, the first rolling unit 110, the second rolling unit 120, the third rolling unit 130, the first guide roller 140, and the second guide roller 150 are rotated in one direction (clockwise). As a result, the adhesive film F to which contaminants are attached is wound around the second rolling unit 120 and collected.

[0089] FIG. 20 is a perspective view showing the configuration of a stamp cleaning device according to an embodiment. FIG. 21 is a cross-sectional view taken along the dotted line in FIG. 20.

[0090] Referring to FIGS. 20 and 21, the stamp cleaning device SC3 is a device for removing the light-emitting element LE and the like attached to the stamp 10, and may include a roll-to-roll unit 100 and a cleaning unit 201.

[0091] FIGS. 20 and 21 are different from the stamp cleaning devices SC1 in FIGS. 1 and 2 in that the cleaning unit 201 is not in a stage shape but in a roller shape. In the embodiments of FIGS. 20 and 21, descriptions overlapping those of the embodiments of FIGS. 1 and 2 are omitted.

[0092] The roll-to-roll unit 100 supplies an adhesive film F for adhering and separating the light-emitting element LE attached to the stamp in a roll-to-roll manner.

[0093] The cleaning unit 201 is disposed between the first guide roller 140 and the second guide roller 150.

[0094] The cleaning unit 201 can move up, down, left, and right. The operation of the cleaning unit 201 will be described in detail with reference to FIGS. 4 and 22 to 26.

[0095] FIGS. 22 to 26 schematically show a step of a stamp cleaning method according to an embodiment. The stamp cleaning device of FIGS. 22 to 26 corresponds to the stamp cleaning device of FIG. 21.

[0096] Hereinafter, a stamp cleaning method according to an embodiment will be described with reference to FIGS. 4 and 21 to 26.

[0097] First, referring to FIG. 21, the roll-to-roll unit 100 peels the release paper R from the laminate film C and supplies the adhesive film F onto the cleaning unit 201 in a roll-to-roll manner (S110 in FIG. 4). Since the supply method of the adhesive film F has been described with reference to FIG. 4, a detailed description thereof will be omitted.

[0098] Referring to FIGS. 22 to 25, the cleaning unit 201 adheres and cleans the stamp residue on the adhesive surface FS of the adhesive film F (S120 in FIG. 4).

[0099] Referring to FIG. 22, the cleaning unit 201 is moved upward (in the direction where the stamp is located) to stretch the adhesive film F. Thereby, even if wrinkles or the like occur in the adhesive film F, they will stretch, and the stamp 10 can be effectively cleaned.

[0100] The roll-to-roll unit 100 can stop its operation while the cleaning unit 201 is operating. For example, after the operation of the roll-to-roll unit 100 stops, the cleaning unit 201 can move.

[0101] Referring to FIGS. 23 and 24, the stamp transfer head 20 is moved downward until it contacts the adhesive surface FS of the adhesive film F disposed on the cleaning unit 201 with the stamp 10. Thereafter, the cleaning unit 201 is moved horizontally (for example, toward the second rolling unit 120). By rotating the roller-type cleaning unit 201 in one direction, the adhesive surface FS of the adhesive film F is adhered to the entire surface of one side of the stamp 10. Accordingly, contaminants on the entire surface of one side of the stamp 10 can be cleaned.

[0102] Referring to FIGS. 25 and 26, the roll-to-roll unit 100 collects the adhesive film to which contaminants have adhered on the adhesive surface of the adhesive film F (S130 in FIG. 4).

[0103] For example, referring to FIG. 25, the cleaning unit 201 is moved downward.

[0104] Next, referring to FIG. 26, the first rolling unit 110, the second rolling unit 120, the first guide roller 140, and the second guide roller 150 are rotated in one direction (clockwise), and the third rolling unit 130 is rotated in the opposite direction of the one direction (counterclockwise). Thereby, the adhesive film F to which contaminants have adhered is wound around the second rolling unit 120 and collected. Further, the cleaning unit 201 is moved horizontally (for example, toward the first rolling unit 110) and positioned at the original position.

[0105] FIG. 27 is also a schematic diagram of a stamp cleaning device according to another embodiment, and FIG. 28 is a diagram for explaining an operation method of the stamp cleaning device of FIG. 27. It is different from the stamp cleaning device SC3 of FIGS. 20 and 21 in that the first guide roller 140, the second guide roller 150, and the cleaning unit 201 are disposed on the adhesive film F as applied to the cleaning device SC4 of the roller-type stamp 11 of FIG. 27.

[0106] Referring to FIGS. 27 and 28, since the roller type stamp 11 is disposed below the stamp cleaning device SC4, the stamp cleaning device SC4 is arranged such that the adhesive surface FS of the adhesive film F faces downward. Also, the cleaning unit 201 also moves downward and contacts the roller type stamp 11. Other operations are the same as those of the stamp cleaning device SC3 described with reference to FIGS. 20 to 26.

[0107] As described in one embodiment, by removing contaminants such as light emitting elements remaining on the stamps 10 and 11 by the stamp cleaning devices SC1 to SC4, the number of times the stamps 10 and 11 can be used can be increased. Thereby, the replacement cycle of the stamps 10 and 11 can be extended, and the product production time can be extended.

[0108] Also, by stretching the adhesive film F before adhering the adhesive film F to the stamps 10 and 11, wrinkles that may occur in the adhesive film F can be removed, and the cleaning efficiency of the stamps can be improved.

[0109] As described above, the embodiments of the present invention have been described with reference to the accompanying drawings. However, those having ordinary knowledge in the technical field to which the present invention pertains can understand that the present invention can be implemented in other specific forms without changing its technical idea and essential features. Therefore, it should be understood that the above-described embodiment is illustrative in all respects and not restrictive.

Explanation of Reference Numerals

[0110] SC1, SC2, SC3, SC4 First to Fourth Stamp Cleaning Devices 100 Roll-to-Roll Unit 110, 120, 130 First to Third Rolling Parts 140, 150 First and Second Guide Rollers 200, 201 Cleaning Units C Laminate Film F Adhesive Film LE Light Emitting Element

Claims

1. A roll-to-roll unit including a first rolling part and a second rolling part arranged separately from the first rolling part, for moving an adhesive film from the first rolling part to the second rolling part; A cleaning unit arranged between the first rolling part and the second rolling part, for stretching the adhesive film and cleaning contaminants on the stamp by adhering the stretched adhesive film to the contaminants adhered to the stamp; and The roll-to-roll unit winds the adhesive film with the contaminants adhered thereon around the second rolling part. A stamp cleaning device.

2. The cleaning unit includes a support part for supporting the adhesive film and a driving part capable of moving up and down; The stamp cleaning device according to claim 1, wherein the support part includes a support chuck for fixing the adhesive film.

3. The driving part includes an upper driving part and a lower driving part capable of moving up and down; The stamp cleaning device according to claim 2, wherein the upper driving part moves downward and the lower driving part moves upward to fix the adhesive film.

4. The support part further includes a vertically movable part capable of moving up and down; The stamp cleaning device according to claim 3, wherein the driving part fixes the adhesive film and the vertically movable part rises to stretch the adhesive film in the circumferential direction.

5. The stamp cleaning device according to claim 3, wherein the driving part fixes the adhesive film, and the roll-to-roll unit and the driving part move downward to stretch the adhesive film in the circumferential direction.

6. The stamp cleaning device according to claim 1, wherein the first rolling part supplies a laminated film with a release paper attached to the adhesive film, and arranges the release paper in the outer direction of the first rolling part.

7. The stamp cleaning device according to claim 6, wherein the roll-to-roll unit further includes a third rolling part for separating the release paper from the laminated film.

8. The stamp cleaning device according to claim 1, wherein the roll-to-roll unit further includes a first guide roller arranged between the first rolling part and the cleaning unit for guiding the adhesive film, and a second guide roller arranged between the second rolling part and the cleaning unit for guiding the adhesive film.

9. The stamp cleaning device according to claim 3 , wherein the upper drive unit includes an opening that is wider than an upper surface of the support unit at a position that overlaps the support unit.

10. The stamp cleaning apparatus of claim 1 , wherein the contaminants include at least one of one or more light emitting elements and dust.

11. 2. The stamp cleaning device according to claim 1, wherein the cleaning unit is roller-shaped and can move up and down and left and right.

12. The stamp cleaning device according to claim 11 , wherein the cleaning unit moves in a direction toward the stamp to stretch the adhesive film in a circumferential direction so that the adhesive film adheres to the stamp.

13. The stamp cleaning device of claim 12 , wherein the cleaning unit is attached to the stamp and moves left and right.

14. The stamp cleaning apparatus of claim 7 , wherein the first rolling unit, the second rolling unit, and the third rolling unit rotate in the same direction.

15. The roll-to-roll unit supplies the adhesive film onto the cleaning unit in a roll-to-roll manner; the cleaning unit stretches the adhesive film to adhere contaminants on the stamp to the adhesive surface of the adhesive film for cleaning; The stamp cleaning method includes the roll-to-roll unit recovering the adhesive film to which the contaminants are adhered.

16. providing on the cleaning unit The stamp cleaning method according to claim 15, wherein the roll-to-roll unit separates the release paper from the laminate film wound around the first rolling section by a third rolling section and transfers the laminate film to the second rolling section.

17. Adhering and cleaning contaminants from the stamp comprises: The cleaning unit moves the upper driving part downward and the lower driving part upward to fix the adhesive film; A support portion supporting the adhesive film is raised to an upper position to stretch the adhesive film in the circumferential direction; 17. The stamp cleaning method according to claim 16, wherein the adhesive film is attached to the adhesive surface of the stamp and then peeled off, and a support chuck on the support is used to fix the adhesive film to the stamp so that it does not lift up.

18. Adhering and cleaning contaminants from the stamp comprises: The cleaning unit moves the upper driving part downward and the lower driving part upward to fix the adhesive film; the roll-to-roll unit, the upper driving unit, and the lower driving unit move downward to stretch the adhesive film in a circumferential direction; 16. The stamp cleaning method according to claim 15, wherein the adhesive film is attached to the adhesive surface of the stamp and then peeled off, and the adhesive film is fixed to the stamp using a support chuck on a support portion so that the adhesive film does not lift up.

19. the cleaning unit is in the form of a roller; Adhering and cleaning contaminants from the stamp; The stamp cleaning method according to claim 15 , wherein the cleaning unit moves up and down toward the stamp, and moves left and right on one surface of the stamp in contact with the stamp to clean the contaminants from the stamp.

20. Prior to adhering and cleaning the stamp of contaminants, The stamp cleaning method of claim 15 , further comprising ceasing operation of the roll-to-roll unit.

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