KR20220063775A - Display device manufacturing device and display device manufacturing method - Google Patents

Abstract

Disclosed are an apparatus for manufacturing a display device and a method for manufacturing the display device. An apparatus for manufacturing a display device according to an exemplary embodiment includes: a stage that supports a display panel and includes a plurality of air holes; a mask interposed between the display panel and the stage and including a plurality of pattern areas having different aperture ratios; and a window jig mounted on the cover window and disposed to face the stage.

Description

A display device manufacturing device and a display device manufacturing method

The present invention relates to a display device manufacturing apparatus and a display device manufacturing method.

The importance of the display device is increasing with the development of multimedia. In response to this, various types of display devices such as a liquid crystal display (LCD) and an organic light emitting display (OLED) are being used.

A cover window for protecting the display panel is generally attached to the front surface of the display panel of the display device, and the cover window is bonded to the display panel by a binder interposed between the display panel and the cover window.

Recently, as a so-called curved edge display device, in which at least a portion of an edge of the display panel includes a curved surface, has been developed, it is possible to easily bend and bond the cover window of the display device including the curved surface and the display panel. The need for existing technologies is increasing.

SUMMARY OF THE INVENTION An object of the present invention is to provide an apparatus for manufacturing a display device capable of reducing bubble generation and driving failure when a display panel and a cover window are attached to each other.

Another object of the present invention is to provide a display device manufacturing method using the display device manufacturing apparatus.

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.

According to an exemplary embodiment, an apparatus for manufacturing a display device includes: a stage mounted on a display panel and including a plurality of air holes; a mask interposed between the display panel and the stage and including a plurality of pattern regions having different aperture ratios; and a window jig mounted on the cover window and disposed to face the stage.

Each of the plurality of pattern regions may include a plurality of openings, and the opening ratio may be a ratio of an area of the plurality of openings to a total area of the pattern region.

Each of the plurality of pattern areas passes air flowing in and out through the plurality of air holes, and the flow rate of the air per unit area may be different for each pattern area of the plurality of pattern areas.

Each of the plurality of pattern regions overlaps at least a portion of the display panel in a thickness direction, and when the display panel and the cover window are bonded together, the pressure per unit area applied to the display panel is applied to each of the pattern regions of the plurality of pattern regions. Each may be different.

The plurality of pattern regions may include a first pattern region and a second pattern region surrounded by the first pattern region and having an opening ratio smaller than that of the first pattern region.

An area of the second pattern region is smaller than an area of the first pattern region

An electronic component protruding from the one surface of the display panel may be disposed on one surface of the display panel facing the mask, and the second pattern region may be disposed to overlap the electronic component in a thickness direction.

The electronic component may include a plurality of electronic components having different shapes, and the second pattern region may include a plurality of sub-regions overlapping the plurality of electronic components in a thickness direction and having different aperture ratios.

The aperture ratio of the sub-region may be determined by a surface height of the electronic component.

The aperture ratio of the sub-region may be determined by a ratio of strain to pressure of the electronic component.

The electronic component may include at least one of a connector, a semiconductor chip, and a flexible circuit board.

wherein the stage includes a flat surface and a curved surface connected to the flat surface, wherein the mask is connected to a flat portion disposed on the flat surface of the stage and connected to the flat portion of the stage and disposed on the curved surface of the stage It may include a bend.

The mask may include a first pattern region disposed over the flat portion of the mask and the curved portion of the mask, and a second pattern region disposed on the flat portion having an opening ratio smaller than that of the first pattern region.

It may further include a third pattern region disposed on the curved portion.

An opening ratio of the third pattern region may be greater than an opening ratio of the first pattern region and the second pattern region.

The flat portion of the mask includes a short side extending in a first direction and a long side extending in a second direction crossing the first direction, and the curved portion of the mask includes a first curved portion disposed along the short side and the long side. It may further include a second curved portion disposed along the curved portion, a double-curvature portion between the first curved portion and the second curved portion, and a fourth pattern region disposed on the double-curvature portion.

According to an exemplary embodiment, a method of manufacturing a display device includes: mounting a mask having a plurality of pattern areas having different aperture ratios on a stage in which a plurality of air holes are formed; mounting a display panel on the mask; and lowering a window jig on which a cover window is mounted toward the display panel to attach the cover window to the display panel.

Each of the plurality of pattern regions includes a plurality of openings, wherein the opening ratio is determined by an area of the plurality of openings, and the plurality of pattern regions pass air flowing in and out through the plurality of air holes, respectively, and The flow rate per unit area of air may be different for each pattern area of the plurality of pattern areas.

Each of the plurality of pattern regions overlaps at least a portion of the display panel in a thickness direction, and when the display panel and the cover window are bonded together, the pressure per unit area applied to the display panel is applied to each of the pattern regions of the plurality of pattern regions. Each may be different.

The plurality of pattern regions may include a first pattern region and a second pattern region surrounded by the first pattern region and having an opening ratio smaller than that of the first pattern region.

Details of other embodiments are included in the detailed description and drawings.

The display device manufacturing apparatus and the display device manufacturing method according to various embodiments of the present disclosure may reduce the occurrence of air bubbles and driving failure when the display panel and the cover window are attached to each other.

Effects according to the embodiments are not limited by the contents exemplified above, and more various effects are included in the present specification.

1 is a perspective view of an apparatus for manufacturing a display device according to an exemplary embodiment;
FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1 .
3 is a plan view of the display panel and the mask of FIG. 1 .
4 is a plan view of a display panel and a mask according to another exemplary embodiment.
5 is a plan view of a display panel and a mask according to another exemplary embodiment.
6 is an enlarged plan view of a pattern in a pattern area according to various embodiments of the present disclosure;
7 is a perspective view of an apparatus for manufacturing a display device according to another exemplary embodiment.
8 is a plan view of the display panel and the mask of FIG. 7 .
9 is a flowchart of a method of manufacturing a display device according to an exemplary embodiment.
10 to 12 are diagrams illustrating steps of a method of manufacturing a display device.

Advantages and features of the present invention and methods of achieving them will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in a variety of different forms, and only these embodiments allow the disclosure of the present invention to be complete, and common knowledge in the technical field to which the present invention belongs It is provided to fully inform the possessor of the scope of the invention, and the present invention is only defined by the scope of the claims.

Reference to an element or layer "on" of another element or layer includes any intervening layer or other element directly on or in the middle of the other element or layer. Like reference numerals refer to like elements throughout. The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments are exemplary, and thus the present invention is not limited to the illustrated matters.

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

1 is a perspective view of an apparatus for manufacturing a display device according to an exemplary embodiment; FIG. 2 is a cross-sectional view taken along line A-A' of FIG. 1 .

Hereinafter, the first direction (X), the second direction (Y), and the third direction (Z) intersect in different directions. The first direction (X), the second direction (Y), and the third direction (Z) may vertically intersect. For example, the first direction X may be a horizontal direction, the second direction Y may be a vertical direction, and the third direction Z may be a thickness direction. The first direction (X), the second direction (Y), and/or the third direction (Z) may include two or more directions. For example, in the cross-sectional view, the third direction Z may include an upward direction and a downward direction. In this case, one surface of the member disposed to face in the upper direction may be referred to as an upper surface, and the other surface of the member disposed to face in the lower direction may be referred to as a lower surface. However, the above directions are exemplary and relative, and are not limited thereto.

The display device manufactured by the following display device manufacturing apparatus 1 is a device for displaying a moving image or a still image, and includes a mobile phone, a smart phone, a tablet PC (Personal Computer), and a smart watch, a watch phone, a mobile communication terminal, and an electronic device. It may include various products such as a portable electronic device such as a notebook, an electronic book, a Portable Multimedia PCAyer (PMP), a navigation system, and an Ultra Mobile PC (UMPC), as well as a television, a laptop computer, a monitor, a billboard, and the Internet of Things.

Hereinafter, a display panel PNL and a cover window CW applied to the display device as objects to be bonded by the display device manufacturing apparatus 1 are exemplified. However, the present invention is not limited thereto, and the object to be bonded by the display device manufacturing apparatus 1 may include, for example, a cover panel attached to the rear surface of the display panel PNL, a touch panel, a polymer film, etc. applied to a display device. member may be included.

1 and 2 , the display device manufacturing apparatus 1 may include a stage ST, a mask MSK, and a window jig WJ.

The stage ST provides a space in which the display panel PNL can be mounted. As shown in FIG. 1 , the stage ST may have an approximate rectangular parallelepiped shape, but is not limited thereto.

The stage ST may be disposed such that the upper surface ST_US faces the lower surface of the window jig WJ. The upper surface ST_US of the stage ST and the lower surface of the window jig WJ may have shapes corresponding to each other. 2 , in one embodiment, the upper surface ST_US of the stage ST includes a flat surface ST_FS, a first curved surface ST_CS1 connected to one side of the flat surface ST_FS, and the flat surface A second curved surface ST_CS2 connected to the other side of ST_FS may be included. However, the present invention is not limited thereto, and the upper surface ST_US of the stage ST is formed of only the flat surface ST_FS, any one of the first curved surface ST_CS1 or the second curved surface ST_CS2 is omitted, or the first At least one curved surface other than the curved surface ST_CS1 and the second curved surface ST_CS2 may be further included.

The stage ST may include a plurality of air holes AH.

The plurality of air holes AH may pass through the inside of the stage ST. One end of the plurality of air holes AH is disposed on the flat surface ST_FS, the first curved surface ST_CS1, and the second curved surface ST_CS2 of the upper surface ST_US of the stage ST, and the plurality of air holes ( AH) may extend from the top surface ST_US of the stage ST to the inside of the stage ST to form an air flow passage passing through the inside of the stage ST. Although not shown, the other end of the plurality of air holes AH may be connected to a device for regulating the internal pressure of the plurality of air holes AH, for example, a vacuum pump.

The flow rate and/or pressure of air passing through the plurality of air holes AH may be varied. For example, when the display panel PNL is mounted, a negative pressure may be formed inside the plurality of air holes AH to fix the display panel PNL and/or the mask MSK. In this case, when the display panel PNL is mounted on the stage ST, a state close to vacuum is formed inside the plurality of air holes AH so that the display panel PNL and/or the mask MSK are mounted on the stage ST. ST) can be fixed on it. As another example, when the display panel PNL and the cover window CW are bonded to each other, positive pressure is formed inside the plurality of air holes AH to apply pressure to the display panel PNL and/or the mask MSK. can do. In this case, air is introduced into the plurality of air holes AH to form a positive pressure, and a predetermined amount of air is injected (or can be discharged).

The flow rate and/or pressure of air passing through the plurality of air holes AH may be individually controlled. For example, the at least one air hole AH may have a flow rate different from that of the other air holes AH. As another example, a negative pressure or a positive pressure different from that of the other air holes AH may be formed in the at least one air hole AH. As another example, a negative pressure may be formed inside the at least one air hole AH, and a positive pressure may be formed inside the other air hole AH. In this case, the air flow rate and/or pressure of each air hole AH is individually controlled, so that a part of the display panel PNL is adsorbed on the stage ST, and the other part of the display panel PNL is covered by a cover window. (CW) can be pressed. However, the flow of air through the plurality of air holes AH is not limited to the above example, and the flow rate and/or pressure of the plurality of air holes AH may be controlled in various ways.

The mask MSK may be disposed on the upper surface ST_US of the stage ST. The mask MSK may be interposed between the display panel PNL and the upper surface ST_US of the stage ST. In an embodiment, the mask MSK may be disposed on the flat surface ST_FS, the first curved surface ST_CS1, and the second curved surface ST_CS2 of the upper surface ST_US of the stage ST. However, the present invention is not limited thereto, and the mask MSK may be disposed only on a part of the upper surface ST_US of the stage ST.

At least a part of the mask MSK may be bent to have a shape corresponding to the shape of the upper surface ST_US of the stage ST. In an embodiment, the mask MSK includes a flat portion MSK_FL, a first curved portion MSK_CV1 connected to one side of the flat portion MSK_FL, and a second curved portion MSK_CV2 connected to the other side of the flat portion MSK_FL. may include The flat portion MSK_FL, the first curved portion MSK_CV1 and the second curved portion MSK_CV2 of the mask MSK are the flat surface ST_FS, the first curved surface ST_CS1 and the second curved surface of the stage ST. ST_CS2) and each may overlap in the thickness direction. However, the present invention is not limited thereto, and the mask MSK includes only the flat part MSK_FL, either the first curved part MSK_CV1 or the second curved part MSK_CV2 is omitted, or the first and second curved parts MSK_CV1 and the second curved part MSK_CV1 are omitted. At least one curved part may be further included in addition to the curved part MSK_CV2 .

The mask MSK is disposed between the plurality of openings OP and the plurality of openings OP through which air injected from the plurality of air holes AH passes, and at least one shielding part BP which does not pass the air. ) may be included.

The plurality of openings OP may be formed in at least one of the flat portion MSK_FL, the first curved portion MSK_CV1 , and the second curved portion MSK_CV2 . The plurality of shielding portions BP may refer to the remaining portions of the mask MSK in which the plurality of openings OP are not formed. In an embodiment, the plurality of openings OP may be formed in all of the flat portion MSK_FL, the first curved portion MSK_CV1 , and the second curved portion MSK_CV2 , but is not limited thereto.

Air injected from the air hole AH of the stage ST may pass through the opening OP of the mask MSK to press the display panel PNL. Air positioned between the display panel PNL and the mask MSK may be sucked into the air hole AH of the stage ST through the opening OP of the mask MSK. A flow rate of air passing through the mask MSK may be controlled by the plurality of openings OP formed in the mask MSK.

The plurality of openings OP and the plurality of shielding portions BP may be disposed to form a pattern on the mask MSK. The mask MSK may be divided into a plurality of pattern areas PA according to the shape and size of the opening OP and the opening ratio of the area in which the opening OP is formed.

The mask MSK may include a plurality of pattern areas PA having different aperture ratios and/or shielding ratios. The aperture ratio may be a ratio of an area of the plurality of openings OP formed in the specific pattern area PA to the total area of the specific pattern area PA on a plane. The shielding ratio may be a ratio of an area of the plurality of shielding parts BP formed in the specific pattern to the total area of the specific pattern area PA. The aperture ratio and the shielding ratio may be in inverse proportion to each other. The aperture ratio and the shielding ratio may vary depending on the size and/or shape of the aperture OP. The total area of the specific pattern area PA may mean the sum of the areas of the plurality of openings OP in the specific pattern area PA and the areas of the plurality of shielding parts BP.

A flow rate of air passing through each pattern area PA of the plurality of pattern areas PA may vary according to an aperture ratio of each pattern area PA. The flow rate may mean a flow rate per unit area. That is, each of the plurality of pattern areas PA passes air flowing in and out through the plurality of air holes AH, and the flow rate of the air may be different for each of the plurality of pattern areas PA. For example, when the specific pattern area PA has a large aperture ratio, the flow rate of air passing through the corresponding pattern area PA increases, and when the specific pattern area PA has a small aperture ratio, the air flow passing through the pattern area PA increases. The flow rate of air may be reduced. Accordingly, the pressure applied to the display panel PNL may vary for each pattern area PA. The pressure may mean a pressure per unit area.

In an embodiment, the mask MSK may include a first pattern area PA1 and a second pattern area PA2 having an opening ratio smaller than that of the first pattern area PA1 . Hereinafter, the first pattern area PA1 and the second pattern area PA2 with reference to FIG. 3 will be described in detail.

The display panel PNL may be mounted on the mask MSK. The display panel PNL may be mounted to overlap the plurality of pattern areas PA of the mask MSK in the thickness direction. At least a portion of the display panel PNL may be bent to have a shape corresponding to the shape of the top surface ST_US of the stage ST and/or the shape of the mask MSK.

The display panel PNL may include a flat portion PNL_FL, a first curved portion PNL_CV1 connected to one side of the flat portion PNL_FL, and a second curved portion PNL_CV2 connected to the other side of the flat portion PNL_FL.

The flat portion PNL_FL, the first curved portion PNL_CV1 and the second curved portion PNL_CV2 of the display panel PNL are the flat portion MSK_FL, the first curved portion MSK_CV1 and the second curved portion PNL_CV2 of the mask MSK, respectively. MSK_CV2) and may overlap in the thickness direction. However, the present invention is not limited thereto, and the display panel PNL includes only the flat portion PNL_FL, either the first curved portion PNL_CV1 or the second curved portion PNL_CV2 is omitted, or the first curved portion PNL_CV1 and the second curved portion PNL_CV1 At least one curved part other than the second curved part PNL_CV2 may be further included.

A display panel (PNL) is a panel that displays a screen or an image, for example, an organic light emitting display panel (OLED), an inorganic light emitting display panel (inorganic EL), a quantum dot light emitting display panel (QED), and a micro LED display panel (micro). -LED), nano-LED display panel (nano-LED), plasma display panel (PDP), field emission display panel (FED), cathode ray display panel (CRT), as well as self-luminous display panels such as liquid crystal display panel (LCD) , and a light-receiving display panel such as an electrophoretic display panel (EPD).

The display panel PNL is staged so that the front surface for displaying an image or video faces the window jig WJ (cover window CW), and the rear surface opposite to the front faces the upper surface ST_US of the stage ST It can be mounted on (ST).

In FIG. 2 , a front surface of the display panel PNL may be an upper surface, and a rear surface of the display panel PNL may be a lower surface. Although not shown, as at least one electronic component EPP (refer to 'EPP' in FIG. 3 ) is disposed on the rear surface of the display panel PNL, it may have an irregular surface shape (surface height) unlike the front surface. there is.

The window jig WJ may be disposed to face the stage ST. In an exemplary embodiment, the window jig WJ may be vertically movable on the upper side of the stage ST.

A lower surface of the window jig WJ may include a window mounting groove WJ_G having a shape corresponding to the upper surface ST_US of the stage ST.

The window mounting groove WJ_G may include a flat surface WJ_FS, a first curved surface WJ_CS1 connected to one side of the flat surface WJ_FS, and a second curved surface WJ_CS2 connected to the other side of the flat surface WJ_FS. can

The cover window CW may be mounted on the window mounting groove WJ_G. The cover window CW may be made of a transparent material, for example, glass or plastic.

The cover window CW may include a flat portion CW_FL, a first curved portion CW_CV1 connected to one side of the flat portion CW_FL, and a second curved portion CW_CV2 connected to the other side of the flat portion CW_FL. . The flat portion CW_FL, the first curved portion CW_CV1 and the second curved portion CW_CV2 of the cover window CW have a flat surface WJ_FS, a first curved surface WJ_CS1 and a second curved portion of the window mounting groove WJ_G, respectively. It may be mounted on the curved surface WJ_CS2.

When the window jig WJ is lowered, the cover window CW and the display panel PNL may be bonded to each other. In an exemplary embodiment, the flat portion CW_FL, the first curved portion CW_CV1 , and the second curved portion CW_CV2 of the cover window CW may include the flat portion PNL_FL and the first curved portion PNL_CV1 of the display panel PNL, respectively. and the second bent portion PNL_CV2. Although not shown, an optically transparent adhesive or an optically transparent resin may be disposed on the lower surface of the cover window CW to couple the cover window CW and the display panel PNL.

3 is a plan view of the display panel and the mask of FIG. 1 .

3A is a plan view of an unfolded display panel. Fig. 3(b) is a plan development view of the mask.

1 to 3A , as described above, the electronic component EPP may be disposed on the rear surface of the display panel PNL.

The electronic component EPP may be a component for driving the display device. For example, the at least one electronic component (EPP) may include, but is not limited to, a cover panel, a flexible circuit board, a camera sensor, a fingerprint sensor, and a display driving integrated circuit.

The electronic component EPP may be mainly located on the flat part MSK_FL, but is not limited thereto. The electronic component EPP may be further positioned in at least one of the first curved portion MSK_CV1 and the second curved portion MSK_CV2 .

As it is disposed on the electronic component EPP, the rear surface of the display panel PNL may have an irregular shape. In detail, the rear surface of the display panel PNL may have an irregular surface height. For example, the electronic component EPP may protrude by about 0.1 mm to 3.0 mm from another portion on which the electronic component EPP is not disposed, for example, a substrate constituting the display panel PNL. In this case, when the display panel PNL and the cover window CW are attached to each other, the rear surface of the display panel PNL is pressed by the electronic component EPP having a relatively high surface height to make a mark on the front surface of the display panel PNL. This can happen. The display device manufacturing apparatus 1 according to an exemplary embodiment may reduce the above marks by adjusting the pressure applied to the display panel PNL by using the mask MSK in which the plurality of pattern areas PA are formed. .

Referring further to FIG. 3B , as described above, the mask MSK may include a first pattern area PA1 and a second pattern area PA2 .

The first pattern area PA1 may be disposed over the first curved portion MSK_CV1 , the flat portion MSK_FL, and the second curved portion MSK_CV2 of the mask MSK. That is, the first pattern area PA1 may be disposed over the entire mask MSK. However, the present invention is not limited thereto, and the first pattern area PA1 may be disposed on only a part of the entire area of the mask MSK. The first pattern area PA1 may mean a remaining area in which the second pattern area PA2 is not disposed.

The second pattern area PA2 may be mainly disposed on the flat part MSK_FL. As illustrated in FIG. 3 , the second pattern area PA2 may have a smaller area than the first pattern area PA1 on a plan view and may be surrounded by the first pattern area PA1 . However, the present invention is not limited thereto, and the second pattern area PA2 may be disposed on at least one of the first curved portion MSK_CV1 and the second curved portion MSK_CV2 . In addition, the area of the second pattern area PA2 may be larger than that of the first pattern area PA1 , and a portion of the second pattern area PA2 is not surrounded by the first pattern area PA1 and is not surrounded by the mask MSK. may form the edge of

The second pattern area PA2 may be disposed at a position corresponding to the position of the electronic component EPP. When the display panel PNL and the mask MSK overlap, the pattern area PA may be disposed to overlap the electronic component EPP in a thickness direction. The second pattern area PA2 may refer to an area overlapping the electronic component EPP disposed on the rear surface of the display panel PNL. The area of the second pattern area PA2 may be greater than or equal to the area of the electronic component EPP in a plan view. Although not illustrated, the area of the second pattern area PA2 may be less than that of the electronic component EPP. In FIG. 3 , the second pattern area PA2 is shown in a rectangular shape at the upper right of the flat part, but the size, shape, and position of the second pattern area PA2 are not limited thereto. For example, the second pattern area PA2 may have various shapes, such as a square, a triangle, a circle, an oval, or a rhombus. Also, although one second pattern area PA2 is illustrated in FIG. 3 , the present invention is not limited thereto, and a plurality of second pattern areas PA2 may be disposed on the mask MSK as will be described later with reference to FIG. 4 . .

The second pattern area PA2 may be disposed only at a position overlapping the electronic component EPP having a predetermined surface height or more. For example, the plurality of electronic components EPP are disposed on the rear surface of the display panel PNL, and the second pattern area PA2 is disposed only at a position overlapping the electronic component EPP having a surface height of about 0.5 mm or more. and the remaining area of the display panel PNL may be covered by the first pattern area PA1 .

A flow rate of air passing through the first pattern area PA1 and the second pattern area PA2 may be controlled by an opening ratio thereof. In an embodiment, the aperture ratio of the first pattern area PA1 may be greater than the aperture ratio of the second pattern area PA2 . For example, the opening ratio of the first pattern area PA1 may be about 80% or more, and the opening ratio of the second pattern area PA2 may be less than 80%. In other words, when the flow rate of the air injected from the upper surface ST_US of the stage ST is 100%, the flow rate per unit area of the air passing through the first pattern area PA1 is about 80% or more, and the second pattern A flow rate per unit area of air passing through the area PA2 may be less than about 80%. However, the present invention is not limited thereto, and the aperture ratio of the first pattern area PA1 and the aperture ratio of the second pattern area PA2 may be variously changed according to a required pressure.

When air is injected from the plurality of air holes AH of the stage ST, the flow rate of the air passing through the first pattern area PA1 is greater than the flow rate of the air passing through the second pattern area PA2, A pressure applied to a portion of the display panel PNL disposed on the first pattern area PA1 may be greater than a pressure applied to a portion of the display panel PNL disposed on the second pattern area PA2 . Accordingly, a portion of the display panel PNL on which the electronic component EPP is not disposed is in close contact with the cover window CW with relatively strong pressure, and another portion of the display panel PNL on which the electronic component EPP is disposed. may be in close contact with the cover window CW with relatively weak pressure.

That is, the display device manufacturing apparatus 1 according to an exemplary embodiment includes a pattern for controlling the flow rate of air passing through the mask MSK, so that when the display panel PNL and the cover window CW are attached to each other, the display panel ( By controlling the pressure applied to the PNL, damage to the display panel PNL, for example, a pressing phenomenon occurring on the front surface of the display panel PNL, may be prevented.

4 is a plan view of a display panel and a mask according to another exemplary embodiment.

4A is a plan view of an unfolded display panel. Fig. 4(b) is a plan development view of the mask.

1, 2, and 4A , a plurality of electronic components EPP having different surface heights and/or strain rates may be disposed on the rear surface of the display panel PNLa. The strain may mean a strain with respect to pressure.

Further referring to FIG. 4B , the plurality of second pattern areas PA2 may be respectively disposed at positions corresponding to the plurality of electronic components EPP. When the display panel PNLa is mounted on the mask MSKa, the plurality of electronic components EPP may respectively overlap the plurality of second pattern areas PA2 in the thickness direction.

The aperture ratios of the plurality of second pattern areas PA2 may vary according to the surface heights and/or strain rates of the plurality of electronic components EPP, respectively. The aperture ratio of the plurality of second pattern areas PA2 increases as the surface height and/or strain of the plurality of electronic components EPP increases, and decreases as the surface height and/or strain of the plurality of electronic components EPP decreases. can

In FIG. 4 , for convenience of explanation, a first electronic component EPP_S, a second electronic component EPP_C, and a third electronic component EPP_CN each having a substantially rectangular shape on a plane as a plurality of electronic components EPP are shown. A first sub-area PA2_1 , a second sub-area PA2_2 , and a third sub-area PA2_3 having a substantially rectangular shape on a plane are illustrated as the plurality of second pattern areas PA2 . When the display panel PNLa and the mask MSKa are overlapped, the first sub-area PA2_1 , the second sub-area PA2_2 , and the third sub-area PA2_3 are the first electronic component EPP_S and the second electronic component, respectively. It overlaps with the component EPP_C and the third electronic component EPP_CN in the thickness direction. However, the number and arrangement of the plurality of electronic components EPP and the plurality of sub-regions are not limited thereto.

For example, the surface height and/or strain of the first electronic component EPP_S is greater than that of the second electronic component EPP_C and the third electronic component EPP_CN, and the surface height and/or strain of the second electronic component EPP_C When the strain is greater than the third electronic component EPP_CN, the aperture ratio of the first sub area PA2_1 is smaller than that of the second sub area PA2_2 and the third sub area PA2_3 and the aperture ratio of the second sub area PA2_2 may be smaller than the third sub area PA2_3 .

As another example, the aperture ratio of each second pattern area PA2 may be determined in consideration of the surface height and strain rate of the electronic component EPP corresponding to each sub area. In detail, when the surface height of the first electronic component EPP_S is smaller than that of the second electronic component EPP_C and the strain rate of the first electronic component EPP_S is greater than that of the second electronic component EPP_C, the first sub-region PA2_1 ) may have an aperture ratio smaller than that of the second sub area PA2_2 . That is, in determining the aperture ratio, the strain rate may be considered more than the surface height. However, the present invention is not limited thereto, and the surface height may be considered more than the strain rate in determining the aperture ratio. In this case, the aperture ratio of the first sub-region PA2_1 may be greater than that of the second sub-region PA2_2 . Similarly, the aperture ratio of the third sub-region PA2_3 may be determined in a similar manner to the above in consideration of the relative height relationship and strain relationship between the third electronic component EPP_CN and other electronic components EPP.

The first electronic component EPP_S may be a display driving integrated circuit, the second electronic component EPP_C may be a sensor, and the third electronic component EPP_CN may be a connector. The sensor may include an integrated circuit for sensing a fingerprint. For example, the surface heights of the display driving integrated circuit, the sensor, and the connector may be about 2.5 mm, 1.0 mm to 2.5 mm, and 1.0 mm, respectively. In this case, the aperture ratio of the second sub area PA2_2 is greater than that of the first sub area PA2_1 and the third sub area PA2_3 , and the aperture ratio of the first sub area PA2_1 is greater than that of the third sub area PA2_3 . can, but is not limited thereto.

Since the embodiment of FIG. 4 is substantially the same as or similar to the embodiment of FIG. 3 other than the plurality of second pattern areas PA2 , a redundant description will be omitted below.

5 is a plan view of a display panel and a mask according to another exemplary embodiment.

5A is a plan view of an unfolded display panel. Fig. 5(b) is a plan development view of the mask.

1, 2, and 5(b) , the mask MSKb may further include a third pattern area PA3 disposed on at least one of the first curved portion MSK_CV1 and the second curved portion MSK_CV2. can

The two third pattern areas PA3 may be disposed on the first curved part MSK_CV1 and the second curved part MSK_CV2 , but a part may be disposed to span the flat part MSK_FL. However, the present invention is not limited thereto, and the two third pattern areas PA3 may be disposed only in the first curved portion MSK_CV1 and the second curved portion MSK_CV2 , respectively. The second pattern area PA2 may be disposed between the two third pattern areas PA3 .

Referring further to FIG. 5A , when the display panel PNLb is mounted on the mask MSKb, the two third pattern areas PA3 include the first curved portion PNL_CV1 and the It may overlap the second bent portion PNL_CV2 in the thickness direction.

The opening ratio of the third pattern area PA3 may be smaller than that of the first pattern area PA1 . Accordingly, when the display panel PNLb and the cover window CW are adhered to each other, a portion of the display panel PNLb disposed on the third pattern area PA3 receives a greater pressure than that of the other portions to thereby apply a greater pressure to the cover window CW. can be strongly adhered to.

1 and 2 , as the cover window CW includes the first curved portion CW_CV1 and the second curved portion CW_CV2 , the display panel PNLb is displayed when the cover window CW is attached to each other. A phenomenon in which the first bent portion PNL_CV1 and the second bent portion PNL_CV2 of the panel PNLb are not completely bonded to the first bent portion CW_CV1 and the second bent portion CW_CV2 of the cover window CW, respectively, may occur. . The mask MSKb of the display device manufacturing apparatus 1 according to the exemplary embodiment includes a third pattern area PA3 disposed in the first curved portion MSK_CV1 and the second curved portion MSK_CV2, and the display panel PNLb It is possible to prevent adhesion failure that may occur in the bent portion of the cover window CW.

In FIG. 5 , two third pattern areas PA3 are illustrated. However, the present invention is not limited thereto, and the third pattern area PA3 may be disposed on only one of the first curved portion MSK_CV1 and the second curved portion MSK_CV2, or a part of the first curved portion MSK_CV1 and/or the second curved portion ( MSK_CV2) may be disposed only in part.

The exemplary embodiment of FIG. 5 is substantially the same as or similar to the exemplary embodiment of FIG. 3 except for the third pattern area PA3 , and thus a redundant description thereof will be omitted.

6 is an enlarged plan view of a pattern in a pattern area according to various embodiments of the present disclosure;

Referring to FIG. 6 , each of the first pattern area PA1 , the second pattern area PA2 , and the third pattern area PA3 illustrated in FIGS. 1 to 5 may include patterns having various shapes. The first pattern area PA1 , the second pattern area PA2 , and the third pattern area PA3 may have patterns having the same shape or different shapes.

The pattern is a pattern having a dot-shaped opening OP as shown in Fig. 6(a), a pattern having a slit-shaped opening OP as shown in Fig. 6(b), and Fig. 6(c). It may include a pattern of various shapes, such as a lattice-shaped (mesh-shaped) pattern in which the opening OP is rectangular or square, and a gradation pattern in which the size of the opening ratio of FIG. 6( d ) varies to have a constant tendency. However, the shape of the pattern is not limited to the above example, and may include various regular or irregular shapes capable of adjusting an opening ratio and an air flow rate.

The sizes of the plurality of openings OP disposed in one pattern area PA may be constant or may vary to have various sizes. For example, as shown in FIG. 6(d) , in the gradation pattern, the size of the opening OP may decrease toward the center of the pattern on a plane. Accordingly, the pressure applied to the display panel PNL may be reduced toward the center of the pattern. However, the present invention is not limited thereto, and the sizes of the plurality of openings OP may be constantly increased or decreased in the horizontal direction, the vertical direction, and/or the diagonal direction on the plane.

7 is a perspective view of an apparatus for manufacturing a display device according to another exemplary embodiment. 8 is a plan view of the display panel and the mask of FIG. 7 .

8A is a plan view of an unfolded display panel. Fig. 8(b) is a plan development view of the mask.

Referring to FIGS. 7 and 8 , the display device manufacturing apparatus 1c includes, unlike the display device manufacturing apparatus 1 of FIGS. 1 and 2 , a display device having a double curvature portion PNL_DC at at least one corner portion. It may be a device for manufacturing.

Referring to FIG. 7 , the upper surface ST_US of the stage STc has a flat surface ST_FS and a first curved surface connected to the flat surface ST_FS and disposed to surround an edge of the flat surface ST_FS, respectively. ST_CS1 ), a second curved surface ST_CS2 , a third curved surface ST_CS3 , and a fourth curved surface ST_CS4 may be included. In one embodiment, the flat surface ST_FS has two short sides in the first direction X and two long sides in the second direction Y, and the first curved surface ST_CS1 and the second curved surface ST_CS2 are Each of the flat surfaces ST_FS extends along two long sides in the second direction Y, and the third curved surface ST_CS3 and the fourth curved surface ST_CS4 have a first direction X of the flat surface ST_FS, respectively. can be extended along the two short sides of

A plurality of double curvature portions ST_DC may be respectively disposed at four corners of the upper surface ST_US of the stage STc. Specifically, a corner between the first curved surface ST_CS1 and the third curved surface ST_CS3 , a corner between the third curved surface ST_CS3 and the second curved surface ST_CS2 , and the second curved surface ST_CS2 and the second curved surface ST_CS2 A plurality of double curvature portions ST_DC may be disposed at a corner between the four curved surfaces ST_CS4 and at a corner between the fourth curved surface ST_CS4 and the first curved surface ST_CS1 , respectively.

7 and 8 (b) , the mask MSKc is connected to the flat part MSK_FL and the flat part MSK_FL, respectively, and is disposed to surround the edge of the flat part MSK_FL. It may include a curved part MSK_CV1 , a second curved part MSK_CV2 , a third curved part MSK_CV3 , and a fourth curved part MSK_CV4 . In an embodiment, the flat portion MSK_FL has two short sides in the first direction X and two long sides in the second direction Y, and the first curved portion MSK_CV1 and the second curved portion MSK_CV2 are flat, respectively. The portion MSK_FL extends along two long sides in the second direction Y, and the third curved portion MSK_CV3 and the fourth curved portion MSK_CV4 have two short sides in the first direction X of the flat portion MSK_FL, respectively. can be extended accordingly.

A plurality of double curvature portions MSK_DC may be respectively disposed at four corners of the mask MSKc. In detail, a corner between the first bent part MSK_CV1 and the third bent part MSK_CV3 , a corner between the third bent part MSK_CV3 and the second bent part MSK_CV2 , and the second bent part MSK_CV2 and the fourth bent part MSK_CV4 A plurality of double-curvature portions MSK_DC may be respectively disposed at a corner therebetween and a corner between the fourth curved portion MSK_CV4 and the first curved portion MSK_CV1 .

The flat portion MSK_FL, the first curved portion MSK_CV1, the second curved portion MSK_CV2, the third curved portion MSK_CV3, and the fourth curved portion MSK_CV4 of the mask MSKc are the flat surfaces ST_FS of the stage STc, respectively. , the first curved surface ST_CS1 , the second curved surface ST_CS2 , the third curved surface ST_CS3 , and the fourth curved surface ST_CS4 may be mounted to overlap in the thickness direction. The plurality of double-curvature portions MSK_DC of the mask MSKc may be mounted on the plurality of double-curvature portions ST_DC of the stage STc to overlap in the thickness direction, respectively.

7 and 8A , the display panel PNLc is connected to the flat portion PNL_FL and the flat portion PNL_FL, respectively, and is disposed to surround the edge of the flat portion PNL_FL. It may include a first curved part PNL_CV1 , a second curved part PNL_CV2 , a third curved part PNL_CV3 , and a fourth curved part PNL_CV4 . In one embodiment, the flat portion PNL_FL has two short sides in the first direction X and two long sides in the second direction Y, and the first curved portion PNL_CV1 and the second curved portion PNL_CV2 are flat, respectively. The portion PNL_FL extends along two long sides in the second direction Y, and the third curved portion PNL_CV3 and the fourth curved portion PNL_CV4 have two short sides in the first direction X of the flat portion PNL_FL, respectively. can be extended accordingly.

A plurality of double curvature portions PNL_DC may be respectively disposed at four corners of the display panel PNLc. In detail, a corner between the first bent part PNL_CV1 and the third bent part PNL_CV3 , a corner between the third bent part PNL_CV3 and the second bent part PNL_CV2 , and the second bent part PNL_CV2 and the fourth bent part PNL_CV4 A plurality of double-curvature portions PNL_DC may be disposed at a corner therebetween, and a corner between the fourth curved portion PNL_CV4 and the first curved portion PNL_CV1 .

The flat portion PNL_FL, the first curved portion PNL_CV1 , the second curved portion PNL_CV2 , the third curved portion PNL_CV3 , and the fourth curved portion PNL_CV4 of the display panel PNLc are the flat portions MSK_FL of the mask MSKc, respectively. ), the first curved portion MSK_CV1 , the second curved portion MSK_CV2 , the third curved portion MSK_CV3 , and the fourth curved portion MSK_CV4 may be mounted to overlap in the thickness direction. The plurality of double-curvature portions PNL_DC of the display panel PNLc may be mounted to overlap in the thickness direction on the plurality of double-curvature portions MSK_DC of the mask MSKc, respectively.

Although not shown, the cover window CW also has a shape corresponding to the upper surface ST_US (display panel PNLc) of the stage STc, and is connected to the flat portion PNL_FL and the flat portion PNL_FL and has a thickness It may include a plurality of curved portions bent in a direction and a plurality of double-curvature portions PNL_DC disposed at corners between the plurality of curved portions. In addition, the lower surface of the window jig WJc may include a flat surface, a plurality of curved surfaces, and a plurality of double curvature surfaces for mounting the cover window CW.

Referring to FIGS. 7 and 8A , as described above, at least one electronic component EPP may be disposed on the rear surface of the display panel PNLc. The electronic component EPP may be mainly disposed on the flat portion PNL_FL, but is not limited thereto.

Referring further to FIG. 8B , the mask MSKc may further include a plurality of fourth pattern areas PA4 disposed on the plurality of double curvature portions. The plurality of fourth pattern areas PA4 may be disposed at corners of the mask MSKc on a plane view. Here, the double curvature portion may mean a region between a corner portion of the flat portion MSK_FL and an outermost corner portion of the mask MSKc on a plane view. Each of the plurality of fourth pattern areas PA4 may have an approximately 'L' shape surrounding the rounded corner portion of the flat portion MSK_FL on a plane surface, but is not limited thereto.

In an embodiment, the plurality of fourth pattern areas PA4 may have substantially the same size as the double curvature portion MSK_DC, but is not limited thereto. The fourth pattern area PA4 may have a smaller size than the double-curvature part MSK_DC and may be positioned inside the double-curvature part MSK_DC. Alternatively, the fourth pattern area PA4 has a larger size than the double curvature portion MSK_DC, so that a portion of the fourth pattern area PA4 is in the adjacent curved portions MSK_CV1, MSK_CV2, MSK_CV3, MSK_CV4 or the flat portion MSK_FL. It may be arranged to span.

The fourth pattern area PA4 may have a smaller opening ratio than that of the first pattern area PA1 and the second pattern area PA2 . Accordingly, when the display panel PNLc and the cover window CW are bonded to each other, a portion of the display panel PNLc positioned on the fourth pattern area PA4 is subjected to a stronger pressure than the other portions, so that the cover window CW is applied. can be adhered to.

Further referring to FIG. 5 , the fourth pattern area PA4 may have an opening ratio equal to or less than the third pattern area PA3 . In addition, referring further to FIG. 6 , the fourth pattern area PA4 may include patterns having various shapes like the first pattern area PA1 , the second pattern area PA2 , and the third pattern area PA3 . there is. The pattern shape of the fourth pattern area PA4 may be the same as or different from that of the first pattern area PA1 , the second pattern area PA2 , and the third pattern area PA3 . However, the pattern shape of the fourth pattern area PA4 is not limited to the shape illustrated in FIGS. 6A to 6D .

In FIG. 8(b) , four double curvature units MSK_DC are disposed, but the present invention is not limited thereto. Although not shown, the first bent part MSK_CV1 and the third curved part MSK_CV3 (or the second bent part MSK_CV2 and the fourth curved part MSK_CV4) are omitted, and the second bent part MSK_CV2 and the fourth bent part MSK_CV4 are omitted. Only one double curvature part MSK_DC may be disposed between (or between the first curved part MSK_CV1 and the third curved part MSK_CV3 ).

Since the embodiment of FIG. 8 is substantially the same as or similar to the embodiment of FIG. 3 other than the fourth pattern area PA4 , a redundant description will be omitted below.

9 is a flowchart of a method of manufacturing a display device according to an exemplary embodiment. 10 to 12 are diagrams illustrating steps of a method of manufacturing a display device.

The following display device manufacturing method may be performed by the display device manufacturing apparatus 1 described above, but is not limited thereto.

Referring to FIG. 9 , in the method of manufacturing a display device according to an exemplary embodiment, a mask MSK having a plurality of pattern areas PA having different aperture ratios is passed on a stage ST in which a plurality of air holes AH are formed. to do; mounting a display panel (PNL) on the mask (MSK); and lowering the window jig WJ on which the cover window CW is mounted toward the display panel PNL to attach the cover window CW to the display panel PNL.

However, the method of manufacturing the display device is not limited to the above example, and at least some of the steps may be omitted or may further include at least one other step with reference to other descriptions of the present specification.

Hereinafter, a method of manufacturing a display device will be described in detail with further reference to FIGS. 10 to 12 .

1 to 3 and 10 , a stage ST and a window jig WJ may be prepared.

A mask MSK may be disposed on the upper surface ST_US of the stage ST. The first curved portion MSK_CV1 , the flat portion MSK_FL and the second curved portion MSK_CV2 of the mask MSK are the first curved surface ST_CS1 , the flat surface ST_FS and the second curved surface of the stage ST, respectively. ST_CS2).

As described above, the mask MSK may include the first pattern area PA1 and the second pattern area PA2 having an opening ratio smaller than that of the first pattern area PA1 . The first pattern area PA1 and the second pattern area PA2 may be disposed on at least one of the first curved surface ST_CS1 , the flat surface ST_FS, and the second curved surface ST_CS2 of the stage ST. .

In an embodiment, the first pattern area PA1 is disposed on the first curved surface ST_CS1 , the flat surface ST_FS and the second curved surface ST_CS2 of the stage ST, and the second pattern area PA2 ) may be disposed on the flat surface ST_FS of the stage ST. However, the present invention is not limited thereto, and the second pattern area PA2 may also be disposed on the first curved surface ST_CS1 and the second curved surface ST_CS2 of the stage ST.

Although the mask MSK of FIG. 3 is illustrated in FIG. 10 , the present invention is not limited thereto. The mask MSK mounted on the stage ST may include the masks MSKa, MSKb, and MSKc of FIGS. 4, 5, and 8 . Detailed configurations of the first pattern area PA1 , the second pattern area PA2 , the third pattern area PA3 , and the fourth pattern area PA4 are the same as described above with reference to FIGS. 3 to 5 and 8 .

Referring to FIG. 11 , after the mask MSK is mounted, the display panel PNL may be mounted on the mask MSK. The first curved portion PNL_CV1 , the flat portion PNL_FL and the second curved portion PNL_CV2 of the display panel PNL are the first curved portion MSK_CV1 , the flat portion MSK_FL and the second curved portion MSK_CV2 of the mask MSK, respectively. ) can be mounted on the

After the display panel PNL is mounted, a negative pressure may be formed in the plurality of air holes AH so that the display panel PNL may be fixed on the stage ST. The negative pressure may include a vacuum and a pressure close to vacuum.

12 , after fixing of the display panel PNL is completed, the window jig WJ descends toward the display panel PNL, and the cover window CW mounted on the window jig WJ and the display panel ( PNL) may be cemented.

In this case, air may be injected (or discharged) from the plurality of air holes AH. The air may pass through the plurality of openings OP of the mask MSK to apply pressure to the display panel PNL. Accordingly, the display panel PNL may be in close contact with the cover window CW.

Air sprayed from the plurality of air holes AH may be sprayed at a uniform pressure on the upper surface ST_US of the stage ST, but is not limited thereto. Each of the air holes AH of the plurality of air holes AH may be controlled to spray air at different pressures. For example, the pressure of the air injected to the first pattern area PA1 may be less than the pressure of the air injected to the second pattern area PA2 . As another example, in proportion to the opening ratio of the pattern area PA located on the plurality of air holes AH, the flow rate of air injected by the air holes AH located below the pattern area PA and/or pressure can be controlled.

As described above, the mask MSK includes a plurality of pattern areas PA having different aperture ratios, and the flow rate of air passing through each pattern area PA may be controlled by the aperture ratio. Accordingly, pressures of different magnitudes may be applied to respective portions of the display panel PNL positioned on each pattern area PA. For example, a pressure less than the remaining portion of the display panel PNL overlapping on the first pattern area PA1 is applied to a portion of the display panel PNL overlapping the second pattern area PA2 of FIG. 12 . can be In this case, as described above with reference to FIG. 3 , damage to the electronic component EPP that overlaps the second pattern area PA2 in the thickness direction may be prevented.

Similarly, as shown in FIGS. 5 and 8 , when the mask MSK further includes at least one of the third pattern area PA3 and the fourth pattern area PA4, the third pattern area PA3 The pressure applied to a portion of the display panel PNL positioned on the upper portion and a portion of the display panel PNL positioned on the fourth pattern area PA4 is also applied to the third pattern area PA3 and the fourth pattern area PA4 . ) can be increased or decreased depending on the aperture ratio. Accordingly, it is possible to prevent a bonding defect that may occur when the display panel PNL and the cover window CW have a bent shape.

Although the embodiments of the present invention have been described above with reference to the accompanying drawings, those of ordinary skill in the art to which the present invention pertains may be embodied in other specific forms without changing the technical spirit or essential features of the present invention. you will be able to understand Therefore, it should be understood that the embodiments described above are illustrative in all respects and not restrictive.

1: display device
ST: stage
WG: window jig
PNL: display panel
CW: cover window
MSK: Mask

Claims (20)

a stage mounted on the display panel and including a plurality of air holes;
a mask interposed between the display panel and the stage and including a plurality of pattern regions having different aperture ratios; and
A display device manufacturing apparatus comprising: a window jig mounted on a cover window and disposed to face the stage. According to claim 1,
Each of the plurality of pattern regions includes a plurality of openings, and the opening ratio is determined by an area of the plurality of openings. According to claim 1,
Each of the plurality of pattern areas passes air flowing in and out through the plurality of air holes, and the flow rate of the air per unit area is different for each pattern area of the plurality of pattern areas. According to claim 1,
Each of the plurality of pattern areas overlaps at least a portion of the display panel in a thickness direction, and when the display panel and the cover window are bonded together, the pressure per unit area applied to the display panel is applied to each pattern of the plurality of pattern areas. A display device manufacturing apparatus that is different for each area. According to claim 1,
The plurality of pattern regions includes a first pattern region and a second pattern region surrounded by the first pattern region and having an aperture ratio greater than that of the first pattern region. 6. The method of claim 5,
An area of the second pattern area is smaller than an area of the first pattern area. 6. The method of claim 5,
An electronic component protruding from the one surface of the display panel is disposed on one surface of the display panel opposite to the mask, and the second pattern region overlaps the electronic component in a thickness direction. 8. The method of claim 7,
The electronic component includes a plurality of electronic components having different shapes, and the second pattern region includes a plurality of sub-regions overlapping the plurality of electronic components in a thickness direction and having different aperture ratios. Device. 9. The method of claim 8,
An aperture ratio of the sub-region is determined by a surface height of the electronic component. 9. The method of claim 8,
The aperture ratio of the sub-region is determined by a sharpness of the electronic component, and the sharpness is a ratio of a surface height to a planar area of the electronic component. 8. The method of claim 7,
The electronic component includes at least one of a connector, a semiconductor chip, and a flexible circuit board. According to claim 1,
wherein the stage includes a flat surface and a curved surface connected to the flat surface, wherein the mask is connected to a flat portion disposed on the flat surface of the stage and connected to the flat portion of the stage and disposed on the curved surface of the stage A display device manufacturing apparatus including a bent portion. 13. The method of claim 12,
A display device manufacturing apparatus comprising: a first pattern area disposed over the flat portion of the mask and the curved portion of the mask; and a second pattern area disposed on the flat portion having an aperture ratio greater than that of the first pattern area. 14. The method of claim 13,
The display device manufacturing apparatus further comprising a third sub-region disposed in the bent portion. 15. The method of claim 14,
An aperture ratio of the third sub area is smaller than an aperture ratio of the first pattern area and the second pattern area. 13. The method of claim 12,
The curved portion of the mask includes a plurality of curved portions bent in different directions from the flat portion of the mask, and the mask has a double-curvature portion disposed between the plurality of curved portions and a fourth pattern disposed on the double-curvature portion A display device manufacturing apparatus further comprising a region. placing a mask having a plurality of pattern regions having different aperture ratios on a stage in which a plurality of air holes are formed;
mounting a display panel on the mask; and
and lowering a window jig on which a cover window is mounted toward the display panel to attach the cover window to the display panel. 18. The method of claim 17,
Each of the plurality of pattern regions includes a plurality of openings, wherein the opening ratio is determined by an area of the plurality of openings, and the plurality of pattern regions pass air flowing in and out through the plurality of air holes, respectively, and A method of manufacturing a display device, wherein a flow rate of air per unit area is different for each pattern area of the plurality of pattern areas. 18. The method of claim 17,
Each of the plurality of pattern areas overlaps at least a portion of the display panel in a thickness direction, and when the display panel and the cover window are bonded together, the pressure per unit area applied to the display panel is applied to each pattern of the plurality of pattern areas. A method of manufacturing a display device that is different for each area. 18. The method of claim 17,
The method of claim 1 , wherein the plurality of pattern regions includes a first pattern region and a second pattern region surrounded by the first pattern region and having an aperture ratio smaller than that of the first pattern region.

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