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Cell cutting device and cell cutting method

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Cell cutting device and cell cutting method


A cell cutting device and a cell cutting method are disclosed. The cell cutting device includes a loading stage configured to load a display sheet including a plurality of display cells, a rotation driving unit connected to the loading stage and configured to rotate the loading stage and to separate the display sheet into the plurality of display cells, and a position change unit connected to the loading stage and configured to change a position of the loading stage.
Related Terms: Cells

Browse recent Samsung Display Co., Ltd. patents - Yongin-si, KR
USPTO Applicaton #: #20130341372 - Class: 225 2 (USPTO) - 12/26/13 - Class 225 
Severing By Tearing Or Breaking > Methods >With Preliminary Weakening

Inventors: Jae-pil Lee, Myeong-lyeol Yu, Dae-seung Mun

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The Patent Description & Claims data below is from USPTO Patent Application 20130341372, Cell cutting device and cell cutting method.

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CROSS-REFERENCE TO RELATED PATENT APPLICATION

This application claims priority to and the benefit of Korean Patent Application No. 10-2012-0066317, filed on Jun. 20, 2012 in the Korean Intellectual Property Office, the entire content of which is incorporated herein by reference.

BACKGROUND

1. Field

Aspects of embodiments of the present invention relate to a cell cutting device and a cell cutting method.

2. Description of the Related Art

In general, various methods may be used to separate a plurality of cells that are formed in a sheet (for example, a substrate of display panels). In particular, a laser or a chemical treatment is generally used. For example, for a plurality of display panels formed on a common substrate, the laser or chemical treatment may be used to separate the display panels. The display panels may alternatively be manually separated.

However, when the aforementioned methods are used, the procedure may be complicated and incur a large manufacturing cost. On the other hand, when the cells are manually separated, quality may vary due to factors such as a difference in cutting pressure. In particular, with manual separation, production output may vary significantly according to factors such as the expertise of the workers.

SUMMARY

Embodiments of the present invention provide for a cell cutting device capable of easily and rapidly cutting a plurality of display cells, and for a cell cutting method.

According to an exemplary embodiment of the present invention, a cell cutting device is provided. The cell cutting device includes a loading stage configured to load a display sheet including a plurality of display cells, a rotation driving unit connected to the loading stage and configured to rotate the loading stage and to separate the display sheet into the plurality of display cells, and a position change unit connected to the loading stage and configured to change a position of the loading stage.

The cell cutting device may further include an adhesion unit connected to the loading stage and configured to adhere the display sheet and the plurality of display cells to the loading stage.

The adhesion unit may include an air intake part configured to intake air from an intake hole in the loading stage.

The rotation driving unit may include a cam connected to the loading stage, and a driving unit connected to the cam and configured to rotate the cam.

The cell cutting device may further include a support unit configured to support the loading stage and to receive a rotation axis of the loading stage, and a rotation member connected to the rotation axis and configured to rotate according to rotation of the cam.

The loading stage may include a plurality of loading stages. The rotation driving unit may include a plurality of rotation driving units arranged to correspond to the loading stages. The plurality of rotation driving units may be configured to operate in sequential order.

The loading stage may include a plurality of loading stages. The rotation angles of the plurality of loading stages may differ from each other.

The loading stage may include a plurality of loading stages. The position change unit may include a plurality of position change units arranged to correspond to the loading stages. The plurality of position change units may be located between respective adjacent ones of the plurality of loading stages and configured to separate the plurality of loading stages from each other.

The cell cutting device may further include a dummy removal unit separated from the loading stage and configured to remove a dummy cell of each of the plurality of display cells.

The loading stage may include a plurality of loading stages. The dummy removal unit may include a cutter unit between adjacent ones of the plurality of loading stages, and a cutter driving unit configured to linearly move the cutter unit toward the plurality of loading stages.

An end of the cutter unit may be tapered.

The cutter unit may include a plurality of cutter units arranged to correspond to the adjacent ones of the plurality of loading stages. The dummy removal unit may further include a position adjusting unit configured to linearly move the plurality of cutter units in a longitudinal direction of the display sheet.

The position adjusting unit may include a cylindrical cam unit connected to the plurality of cutter units, and a cam driving unit connected to the cylindrical cam unit and configured to rotate the cylindrical cam unit.

The cell cutting device may further include a crack forming unit configured to form a crack in the display sheet loaded onto the loading stage.

According to another exemplary embodiment of the present invention, a cell cutting method is provided. The method includes loading a display sheet including a plurality of display cells onto a loading stage, forming a crack between the plurality of display cells, separating the plurality of display cells from each other by rotating the loading stage in one direction, and rotating the loading stage in a direction opposite to the one direction.

The loading stage may include a plurality of loading stages arranged to correspond to the display cells. The method may further include separating the plurality of loading stages from each other in a longitudinal direction of the display sheet.

The loading of the display sheet may include adhering the display sheet and the plurality of display cells to the loading stage.

The loading stage may include a plurality of loading stages arranged to correspond to the display cells. The rotating of the loading stage in the one direction may include rotating the plurality of loading stages in sequential order.

The loading stage may include a plurality of loading stages arranged to correspond to the display cells. In the rotating of the loading stage in the one direction, rotation angles of the plurality of loading stages may differ from each other.

The method may further include removing a dummy region of each of the plurality of separated display cells by using a dummy removal unit.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other features and aspects of the present invention will become more apparent by describing in detail exemplary embodiments thereof with reference to the attached drawings in which:

FIG. 1 is a perspective view of a cell cutting device according to an embodiment of the present invention;

FIGS. 2A and 2B illustrate an operation of the cell cutting device of FIG. 1;

FIG. 3 illustrates operations of a first cam and a second cam shown in FIG. 1;

FIG. 4 is a perspective view of a cell cutting device according to another embodiment of the present invention;

FIG. 5 illustrates an operation of the cell cutting device of FIG. 4; and

FIG. 6 illustrates an operation of a dummy removal unit of FIG. 4.

DETAILED DESCRIPTION

The present invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The present invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein. Rather, these exemplary embodiments are provided to more fully convey aspects and concepts of the invention to those of ordinary skill in the art.

The terms or words used in the following description should not be construed as limiting the spirit and scope of the following claims but should be construed as describing exemplary embodiments of the present invention. Throughout the specification, a singular form may include plural forms, unless there is a particular description contrary thereto. In addition, terms such as “comprise” and/or “comprising” are used to specify existence of, for example, a recited form, a process, an operation, and/or a component, not excluding the existence of one or more other recited forms, one or more other processes, one or more other operations, and/or one or more other components. Throughout the specification, while terms such as “first” and “second” are used to describe various components, the components are not limited to the terms “first” and “second”. The terms “first” and “second” are used only to distinguish between each component.

FIG. 1 is a perspective view of a cell cutting device 100 according to an embodiment of the present invention. FIGS. 2A and 2B illustrate an operation of the cell cutting device 100 of FIG. 1. FIG. 3 illustrates operations of a first cam 141 (and similarly, for a second cam 151) shown in FIG. 1.

Referring to FIGS. 1 through 3, the cell cutting device 100 includes a loading stage or a plurality of loading stages 110 to which a display sheet S having a plurality of display cells D formed thereon is loaded. The plurality of loading stages 110 may be arranged (e.g., to correspond to the display cells D). For example, the plurality of loading stages 110 may be arranged to support surfaces of the display cells D, respectively.

As shown in FIG. 1, the loading stages 110 include a first loading stage 111, and a second loading stage 113 that is separated from the first loading stage 111 by a set distance (for example, a predetermined distance). The number of loading stages 110 is not limited to any particular number and thus, may vary according to factors such as the number of display cells D. For example, when the number of display cells D is 10, the number of loading stages 110 may be 10. In addition, when the number of display cells D is 5, the number of loading stages 110 may be 5. Other numbers may also be chosen. For example, when the number of display cells D is 5, the number of loading stages 110 may be 10. Hereinafter, for convenience of description, it is assumed that the number of display cells D is 2, and the number of loading stages 110 is 2.

The display sheet S is a sheet on which the display cells D are disposed, for example located or arranged, in a particular form or arrangement, such as a checkered form (e.g., an array of one or more dimensions). For example, the display sheet S may have the display cells D arranged as an array in one direction. That is, the display sheet S may be arranged such that a first display cell D1, and a second display cell D2 that is separated from the first display cell D1 by a set distance (for example, a predetermined distance), are arranged in an array of one direction (e.g., in a line). Such a display sheet S may be loaded onto the loading stage 110 by an external apparatus.

The cell cutting device 100 may include an adhesion unit or a plurality of adhesion units that is part of (for example, is mounted in) the loading stage 110. The adhesion unit adheres to the display sheet S that is loaded onto the loading stage 110 and thus, may fix the display sheet S to the loading stage 110. In addition, after the display sheet S is separated into the display cells D, the adhesion unit may adhere to and fix the display cells D to the loading stage 110.

The plurality of adhesion units may be arranged (for example, arranged similarly to the display cells D on the display sheet S). The adhesion units may include a first adhesion unit located in (for example, mounted in) the first loading stage 111 and a second adhesion unit located in (for example, mounted in) the second loading stage 113. The first adhesion unit and the second adhesion unit may be formed in a similar manner. As such, for brevity of description, only the first adhesion unit will be described in further detail.

The first adhesion unit may be variously formed. For example, the first adhesion unit may have a first air intake part to intake air from a first intake hole 131 formed in the first loading stage 111. The first air intake part may include a first nozzle connected to the first intake hole 131 of the first loading stage 111, and a first intake pump to intake air through the first nozzle. In other embodiments, the first adhesion unit may be a concave structure to adhere to the display sheet S and the display cells D. Hereinafter, for convenience of description, it is assumed that the first adhesion unit has the first air intake part.

The cell cutting device 100 may include a rotation driving unit (or a plurality of rotation driving units) that is connected or attached to (for example, mounted to) the loading stage 110 to rotate the loading stage 110. The plurality of rotation driving units may be arranged (e.g., to correspond to the plurality of loading stages 110). For example, the rotation driving units may include a first rotation driving unit 140 connected to or mounted to the first loading stage 111, and a second rotation driving unit 150 connected to or mounted to the second loading stage 113. The first rotation driving unit 140 and the second rotation driving unit 150 may have similar configurations and functions. As such, for brevity of description, only the first rotation driving unit 140 will be described in further detail.

In the cell cutting device 100 of FIGS. 1-3, the first rotation driving unit 140 includes the first cam 141 connected to the first loading stage 111. In addition, the first rotation driving unit 140 includes a first driving unit 142 that is connected to the first cam 141 to rotate the first cam 141. The first driving unit 142 includes a first driving power generating unit 143 that is externally formed to generate a driving power. The first driving power generating unit 143 may be variously formed. For example, the first driving power generating unit 143 may include a first motor, a first cylinder, or the like. Hereinafter, for convenience of description, it is assumed that the first driving power generating unit 143 includes the first motor.

The first driving unit 142 also includes a first driving power delivering unit 145 that is connected to the first driving power generating unit 143 and the first cam 141 to deliver the driving power of the first driving power generating unit 143 to the first cam 141. The first driving power delivering unit 145 may be variously formed according to the form of the first driving power generating unit 143. For example, when the first driving power generating unit 143 is the first motor, the first driving power delivering unit 145 may include a first gear assembly 145a that rotates according to rotation of the first motor, and a first shaft 145b that is connected to the first cam 141 and rotates according to an operation of the first gear assembly 145a.

In other embodiments, when the first driving power generating unit 143 is the first cylinder, the first driving power delivering unit 145 may include a first link assembly that rotates or moves according to movement of the first cylinder, and a cam rotating member that is connected to the first cam 141 to rotate the first cam 141 according to an operation of the first link assembly. However, in the embodiment of FIG. 1, it is assumed that the first driving power generating unit 143 is the first motor. Thus, the first driving power delivering unit 145 includes the first gear assembly 145a and the first shaft 145b.



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stats Patent Info
Application #
US 20130341372 A1
Publish Date
12/26/2013
Document #
13662099
File Date
10/26/2012
USPTO Class
225/2
Other USPTO Classes
225 97, 225 965
International Class
26F3/00
Drawings
7


Cells


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