KR20210116761A - Height measuring apparatus and height measuring method - Google Patents

Abstract

One embodiment of the present invention discloses a height measuring device, comprising: a seating portion on which at least a portion of a bent cover member is seated; a protrusion portion protruding from the seating portion and surrounding at least a portion of the cover member; and a measuring member that contacts the cover member to measure the height of the bent portion of the cover member. Embodiments of the present invention provide a height measuring device and a height measuring method for accurately measuring the curvature or height of a connection portion.

Description

Height measuring apparatus and height measuring method {Height measuring apparatus and height measuring method}

The present invention relates to a height measuring device and a height measuring method, and more particularly, to a height measuring device and a height measuring method of a cover member included in a display device.

Electronic devices based on mobility are widely used. As a mobile electronic device, in addition to a small electronic device such as a mobile phone, a tablet PC has been widely used in recent years.

Such a mobile electronic device includes a display device to provide a user with various functions, for example, visual information such as an image or an image. Recently, as other components for driving the display device are miniaturized, the proportion of the display device in electronic devices is gradually increasing, and a structure that can be bent to have a predetermined angle in a flat state is being developed.

Also, the display device may include various curvatures, such as including a first bending area extending in a first direction and a second bending area extending in a second direction crossing the first direction.

In the display device, various members may be coupled to each other. In this case, a cover member including a first bending part extending in a first direction and a second bending part extending in a second direction crossing the first direction may be attached to the display member displaying an image. In this case, the curvature or height of the connecting portion connected to the first bending portion and the second bending portion of the cover member may be gradually changed.

Embodiments of the present invention provide a height measuring device and a height measuring method for accurately measuring the curvature or height of such a connection part.

One embodiment of the present invention, at least a portion of the bent cover member is seated a seating portion; a protrusion protruding from the seating portion and surrounding at least a portion of the cover member; and a measuring member contacting the cover member to measure the height of the bent portion of the cover member.

In one embodiment, the cover member includes a first bending part extending in a first direction, a second bending part extending in a second direction crossing the first direction, and having a different curvature from the first bending part; and a connection part connecting the first bending part and the second bending part, wherein the protrusion may surround the connection part.

In an embodiment, a plurality of the connecting parts of the cover member may be provided, and a plurality of the protrusions may be provided, and the plurality of protrusions may correspond to the plurality of connecting parts, respectively.

In an embodiment, the measuring member may rotate based on a third direction intersecting the first direction and the second direction.

In an embodiment, the protrusion may include a first portion and a second portion, and the first portion and the second portion may define a groove through which the measuring member passes.

In an embodiment, the groove may include a first groove and a second groove connected to the first groove and having a second depth greater than the first depth of the first groove.

In an embodiment, the groove may include a first groove and a second groove connected to the first groove and having a second width greater than the first width of the first groove.

In one embodiment, the groove may be provided along the moving direction of the measuring member.

In an embodiment, the width of the groove on the upper surface of the first part and the upper surface of the second part may be greater than the width of the groove on the bottom surface of the groove.

In an embodiment, the measuring member may be connected to the gantry and move in an extending direction of the gantry.

In one embodiment, the measuring member may include a distal end in contact with the cover member.

In one embodiment, the measuring member, the distal end portion may further include a control unit for adjusting the position to contact the measuring member.

In an embodiment, the width of the distal end may decrease toward the distal end of the measuring member.

In one embodiment, the control unit for calculating the height of the bent portion of the cover member by contacting the measuring member and the cover member; may further include.

In another embodiment of the present invention, a first bending part extending in a first direction, a second bending part extending in a second direction crossing the first direction and having a different curvature from the first bending part, and the A method for measuring the height of a cover member including a connection part connecting a first bending part and the second bending part, the method comprising: seating the cover member on a seating part; aligning the connecting portion with a groove defined between a first portion and a second portion surrounding at least a portion of the connecting portion; and measuring, by the measuring member, contacting the connection part to measure the height of the connection part.

In one embodiment, the cover member is opposite to the first surface and the first surface convex by the first bending portion and the second bending portion, and concave by the first bending portion and the second bending portion and a second surface, and the seating part may face the first surface.

In an embodiment, the method may further include rotating the measuring member based on a third direction intersecting the first direction and the second direction.

In an embodiment, measuring the height of the connection part may include aligning the measuring member with the connection part through the groove.

In an embodiment, measuring the height of the connection part may include descending the distal end of the measuring member toward the connection part.

In one embodiment, the groove includes a first groove and a second groove connected to the first groove, the second groove having a second depth greater than the first depth of the first groove, and A position of the bottom surface of the first groove may be higher than a contact position of the connection part and the distal part from the upper surface of the seating part.

As described above, in the height measuring device according to an embodiment of the present invention, a seating part on which the cover member is seated, a protrusion part protruding from the seating part, and at least partially surrounding the cover member, and the cover member are in contact with the cover member. Since it includes a measuring member for measuring the height of the bent portion, it is possible to accurately measure the curvature or height of the bent portion of the cover member.

In addition, the height measuring method according to an embodiment of the present invention aligns the connection part in a groove defined between the first part and the second part surrounding at least a part of the connection part, and the measuring member contacts the connection part to make the The curvature or height of the joint can be accurately measured.

Accordingly, by attaching the accurately measured cover member to the display member, it is possible to prevent a defect from entering between the cover member and the display member.

1 is a perspective view schematically showing a height measuring device according to an embodiment of the present invention.
2 is a plan view schematically illustrating a support member according to an embodiment of the present invention.
3 is a perspective view schematically illustrating a part of a height measuring device according to an embodiment of the present invention.
4 is a cross-sectional view schematically illustrating a first protrusion and a measuring member according to an embodiment of the present invention.
5 is a cross-sectional view schematically showing a first protrusion and a measuring member according to another embodiment of the present invention.
6 is a plan view of the cover member measured by the height measuring device of the present invention.
7A is a cross-sectional view taken along line A-A' of FIG. 6 .
7B is a cross-sectional view taken along line B-B' of FIG. 6 .
7C is a cross-sectional view taken along line C-C' of FIG. 6 .
7D is a cross-sectional view taken along line D-D' of FIG. 6 .
8 is a flowchart illustrating a method for measuring the height of a cover member according to an embodiment of the present invention.
9 is a plan view illustrating that the cover member is seated on the seating part in the height measuring method according to an embodiment of the present invention.
10 and 11 are perspective views illustrating that the measuring member contacts the connection part and measures the height of the connection part in the method for measuring the height according to an embodiment of the present invention.
12 is a cross-sectional view illustrating that the measuring member contacts the connection part and measures the height of the connection part in a height measuring method according to an embodiment of the present invention.

Since the present invention can apply various transformations and can have various embodiments, specific embodiments are illustrated in the drawings and described in detail in the detailed description. Effects and features of the present invention, and a method of achieving them, will become apparent with reference to the embodiments described below in detail in conjunction with the drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various forms.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, and when described with reference to the drawings, the same or corresponding components are given the same reference numerals, and the overlapping description thereof will be omitted. .

In the following embodiments, terms such as first, second, etc. are used for the purpose of distinguishing one component from another without limiting meaning.

In the following examples, the singular expression includes the plural expression unless the context clearly dictates otherwise.

In the following embodiments, terms such as include or have means that the features or components described in the specification are present, and the possibility of adding one or more other features or components is not excluded in advance.

In the following embodiments, when it is said that a part such as a film, region, or component is on or on another part, it is not only when it is directly on the other part, but also another film, region, component, etc. is interposed therebetween. Including cases where there is

In the drawings, the size of the components may be exaggerated or reduced for convenience of description. For example, since the size and thickness of each component shown in the drawings are arbitrarily indicated for convenience of description, the present invention is not necessarily limited to the illustrated bar.

Where certain embodiments are otherwise feasible, a particular process sequence may be performed differently from the sequence described. For example, two processes described in succession may be performed substantially simultaneously, or may be performed in an order opposite to the order described.

In the following embodiments, when a film, region, or component is connected, it is not only when the film, region, and component are directly connected, but also other films, regions, and components are interposed between the films, regions, and components. It includes the case of intervening and indirectly connected. For example, in this specification, when it is said that a film, a region, a component, etc. are electrically connected, not only the case where the film, a region, a component, etc. are directly electrically connected, but also other films, regions, and components are interposed therebetween. Indirect electrical connection is also included.

1 is a perspective view schematically showing a height measuring device 1 according to an embodiment of the present invention. 2 is a plan view schematically illustrating a support member 100 according to an embodiment of the present invention. 3 is a perspective view schematically illustrating a part of a height measuring device according to an embodiment of the present invention. 4 is a cross-sectional view schematically showing the first protrusion 120A and the measuring member 200 according to an embodiment of the present invention.

1 to 4 , the height measuring device 1 includes a stage 10 , a guide member 20 , a gantry 30 , a support member 100 , a measuring member 200 , and a control unit 300 . may include

The guide member 20 and the support member 100 may be disposed on the stage 10 . The guide member 20 may be disposed to be spaced apart from each other with the support member 100 interposed therebetween. In one embodiment, the length of the guide member 20 may be the same as the length of the edge of the support member (100). In another embodiment, the length of the guide member 20 may be longer than the edge length of the support member 100 . In this case, the length of the guide member 20 and the length of the edge of the support member 100 may be measured in the y-direction of FIG. 1 .

The support member 100 may include a seating part 110 and a protrusion part 120 .

The cover member CW may be seated on the seating part 110 . In one embodiment, the seating portion 110 may include a seating protrusion SP, and the cover member CW may be seated on the seating projection SP. In another embodiment, the seating part 110 may not include the seating protrusion SP, and in this case, the front surface of the cover member CW may be disposed on the seating part 110 in full contact.

In an embodiment, the seating protrusion SP may include a first seating protrusion SP1 and a second seating projection SP2. In this case, the first seating protrusion SP1 and the second seating protrusion SP2 may have different shapes. For example, the first seating projection SP1 may have a rectangular shape on a plane (eg, on an xy plane), and the second seating projection SP2 may have a circular shape on a plane (eg, on an xy plane). have. In another embodiment, the first seating protrusion SP1 and the second seating protrusion SP2 may have the same shape as each other. Hereinafter, a case in which the first seating protrusion SP1 has a rectangular shape in plan view and the second seating protrusion SP2 has a circular shape in plan view will be described in detail.

In an embodiment, the first seating protrusion SP1 may be disposed to correspond to the protrusion 120 . In this case, a plurality of first seating protrusions SP1 may be provided, and each of the first seating protrusions SP1 may be disposed to be spaced apart from each other.

The first seating protrusion SP1 may include a long side and a short side on a plane (eg, on an xy plane). In one embodiment, the short side on a plane of the first seating protrusion SP1 may be disposed to face the groove H of the protrusion 120 . In another embodiment, the long side on a plane of the first seating protrusion SP1 may be disposed to face the groove H of the protrusion 120 .

A plurality of second seating projections SP2 may be provided, and each of the second seating projections SP2 may be disposed to be spaced apart from each other. In FIG. 2 , the second seating protrusions SP2 are shown to be spaced apart from each other in the first direction (eg, the x-direction or the -x-direction), but in another embodiment, the second seating protrusions SP2 are second They may be disposed to be spaced apart from each other in a direction (eg, a y-direction or a -y-direction). In another embodiment, the second seating protrusions SP2 are disposed to be spaced apart from each other in the first direction (eg, the x direction or the -x direction) and the second direction (eg, the y direction or the -y direction). can be

The protrusion 120 may at least partially surround the cover member CW. The protrusion 120 may be disposed to protrude from the seating unit 110 in a third direction (eg, a z-direction or a -z-direction). In one embodiment, the protrusion 120 may be provided integrally with the seating part 110 . In another embodiment, the protrusion 120 may be attached and disposed on the seating part 110 .

In an embodiment, a plurality of protrusions 120 may be disposed on the seating unit 110 . For example, the protrusion 120 may include a first protrusion 120A, a second protrusion 120B, a third protrusion 120C, and a fourth protrusion 120D. As another example, the protrusion 120 may include one of the first protrusion 120A to the fourth protrusion 120D and the other one of the first protrusion 120A to the fourth protrusion 120D. In another embodiment, the protrusion 120 may include at least one of a first protrusion 120A, a second protrusion 120B, a third protrusion 120C, and a fourth protrusion 120D. In another embodiment, the protrusion 120 may include a fifth protrusion or more protrusions.

The plurality of protrusions 120 may respectively correspond to the plurality of connection portions CP. For example, the first protrusion 120A, the second protrusion 120B, the third protrusion 120C, and the fourth protrusion 120D may correspond to the connection part CP, respectively.

In an embodiment, the plurality of protrusions 120 may be disposed to be spaced apart from each other in the first direction (eg, the x direction or the -x direction) or the second direction (eg, the y direction or the -y direction). have. In another embodiment, the plurality of protrusions 120 may be disposed to be connected to each other. For example, the first protrusion 120A may be connected to the second protrusion 120B and/or the fourth protrusion 120D. In this case, the plurality of protrusions 120 may be disposed to surround the cover member CW disposed on the seating part 110 . Hereinafter, a case in which the plurality of protrusions 120 are disposed to be spaced apart from each other will be described in detail. In addition, since the first protrusion 120A, the second protrusion 120B, the third protrusion 120C, and the fourth protrusion 120D are similar to each other, the first protrusion 120A will be described in detail. .

In an embodiment, the first protrusion 120A may include a first portion 121 and a second portion 122 . In this case, the first portion 121 may extend along at least a part of the first direction (eg, the x-direction or the -x-direction), and the second portion 122 may extend in a second direction intersecting the first direction. (eg, y-direction or -y-direction).

The first part 121 may be connected to the second part 122 . In this case, the first portion 121 may include a curved portion in plan to be connected to the second portion 122 extending along the second direction (eg, the y-direction or the -y-direction). That is, a portion of the first portion 121 may extend in the second direction (eg, the y-direction or the -y-direction).

The first portion 121 and the second portion 122 may define a groove H through which the measuring member 200 passes. Specifically, the surfaces of the first part 121 and the second part 122 facing each other may define the groove H. Based on the groove H, the connecting portion CP connecting different bending portions of the cover member CW may be aligned. In addition, the groove (H) may be disposed along the moving direction of the measuring member (200). That is, the groove H may include a first groove H1 and a second groove H2 connected to each other, and the first groove H1 and the second groove H2 are in the moving direction of the measuring member 200 . may be arranged side by side.

The first groove H1 may be disposed outside the center of the seating part 110 than the second groove H2 . In this case, the connection part CP of the cover member CW may be aligned with respect to the first groove H1 . In an embodiment, a surface of the first portion 121 and a surface of the second portion 122 that face each other and define the first groove H1 may be disposed in parallel. In this case, the first groove H1 may have a rectangular shape in cross-section (eg, on a yz plane). In another embodiment, a surface of the first portion 121 and a surface of the second portion 122 that face each other and define the first groove H1 may be non-parallel. In this case, the first groove H1 may have an inverted trapezoidal shape in cross-section (eg, on a yz plane).

The second groove H2 may be disposed on the inner side with respect to the center of the seating part 110 than the first groove H1 . In an embodiment, a surface of the first portion 121 and a surface of the second portion 122 facing each other and defining the second groove H2 may be disposed in parallel. In this case, the second groove H2 may have a rectangular shape in cross-section (eg, on a yz plane). In another embodiment, a surface of the first portion 121 and a surface of the second portion 122 that face each other and define the second groove H2 may be non-parallel. In this case, the second groove H2 may have an inverted trapezoidal shape in cross-section (eg, on a yz plane).

In an embodiment, the second depth h2 of the second groove H2 may be greater than the first depth h1 of the first groove H1 . In this case, the first depth h1 may be defined as a length from the top surface of the first part 121 or the second part 122 to the bottom surface of the first groove H1, and the second depth h2 may be defined as the length from the top surface of the first part 121 or the second part 122 to the bottom surface of the second groove H2. Accordingly, the first portion 121 and the second portion 122 may be connected to each other while defining the first groove H1 .

In an embodiment, the second width d2 of the second groove H2 may be greater than the first width d1 of the first groove H1 . In this case, the first width d1 may be defined as the shortest distance between the surfaces of the first part 121 and the surfaces of the second part 122 facing each other in the first groove H1, and the second width (d2) may be defined as the shortest distance between the surface of the first portion 121 and the surface of the second portion 122 facing each other in the second groove H2.

The protrusion 120 as described above may be disposed to surround the connection part CP of the cover member CW disposed on the seating part 110 . The measuring member 200 may be disposed to correspond to the groove H, and the measuring member 200 passing through the groove H defined in the protrusion 120 may measure the height of the connection part CP. .

A gantry 30 may be disposed on the guide member 20 . In one embodiment, the guide member 20 may include a constant rail so that the gantry 30 can linearly move in the longitudinal direction of the guide member 20 . In particular, the guide member 20 may include a linear motion rail.

In one embodiment, at least one gantry 30 may be disposed on the guide member 20 . For example, a plurality of gantry 30 may be disposed on the guide member 20 . As another example, one gantry 30 may be disposed on the guide member 20 . Hereinafter, a case in which one gantry 30 is disposed on the guide member 20 will be described in detail.

The gantry 30 may move along the longitudinal direction of the guide member 20 . For example, the gantry 30 may move in the second direction (eg, the y direction or the -y direction) that is the extending direction of the guide member 20 . In an embodiment, the gantry 30 may be manually linearly moved, or may be automatically linearly moved using a motor, a cylinder, or the like. For example, the gantry 30 may include a linear motion block moving along a linear motion rail to automatically linearly move.

The measuring member 200 may be disposed on the gantry 30 . At this time, the measuring member 200 may be connected to the gantry 30 and move in the extending direction of the gantry 30 . For example, the measuring member 200 may move in a first direction (eg, an x-direction or a -x-direction) that is an extended direction of the gantry 30 . In one embodiment, the gantry 30 may include a constant rail so that the measuring member 200 is movable along the longitudinal direction of the gantry 30 . In particular, the gantry 30 may include a linear motion rail. The measuring member 200 may be manually moved linearly, or may be automatically linearly moved by using a motor, a cylinder, or the like. For example, the measuring member 200 may automatically move linearly, including a linear motion block moving along a linear motion rail.

In an embodiment, the height measuring device 1 may include at least one measuring member 200 . For example, the height measuring device 1 may include one measuring member 200 . As another example, the height measuring device 1 may include a plurality of measuring members 200 . In this case, the plurality of measuring members 200 may be disposed to correspond to the plurality of protrusions 120 , respectively.

The measuring member 200 may rotate based on a third direction (eg, a z-direction or a -z-direction). The measuring member 200 may rotate manually or automatically rotate by using a motor.

The measuring member 200 may include an end portion EP and an adjustment portion LP.

The distal end EP may be connected to the control unit LP. In an embodiment, the width of the distal end EP may decrease toward the distal end of the measuring member 200 . For example, the width of the distal end EP may decrease in a direction from the gantry 30 to the support member 100 (eg, a -z direction). In this case, the width of the distal end EP may be in the first direction (eg, the x direction or the -x direction) or the second direction (eg, the y direction or the -y direction) on a plane (eg, on the xy plane). direction) of the distal end EP.

In one embodiment, the distal end EP may have a flat (-) driver shape. For example, the distal end EP may have an inverted triangular shape in cross-section (eg, on a yz plane). As another example, the distal end EP may have an inverted trapezoidal shape in cross-section (eg, on a yz plane). That is, referring to FIG. 4 , the first width D1 at the end of the distal end EP may be smaller than the second width D2 at the portion where the distal end EP and the adjusting unit LP are connected.

In an embodiment, when the distal end EP is disposed in the first groove H1 , the distal end EP may be disposed in contact with the bottom surface of the first groove H1 . In another embodiment, when the distal end EP is disposed in the first groove H1 , the distal end EP may be disposed to be spaced apart from the bottom surface of the first groove H1 .

Since the distal end EP has a shape of a straight driver, it may be easily contacted with the connecting portion CP of the cover member CW having a thin thickness. In some embodiments, the distal end EP may be rectangular in cross-section (eg, on a yz plane).

The end portion EP may be made of aluminum (Al), stainless steel, invar, nickel (Ni), cobalt (Co), a nickel alloy, a nickel-cobalt alloy, or the like.

In the present embodiment, the first width d1 of the first groove H1 may be smaller than the second width d2 of the second groove H2. In this case, since the connection portion CP of the cover member CW may be aligned with respect to the first groove H1 , the accuracy may be improved compared to the case where the connection portion CP is aligned with the second groove H2 as the reference. However, since the distal end EP has a straight (-) driver shape, it is disposed to correspond to the first groove H1 so that the distal end EP is moved in the third direction (eg, z-direction or -z-direction). When rotating, interference with the first groove H1 may occur. In the present embodiment, since the second width d2 of the second groove H2 is greater than the first width d1 of the first groove H1, the distal end EP rotates in the second groove H2. can do. Accordingly, the distal end EP may have a different angle of contact with the connecting portion CP.

The adjuster LP may move the distal end EP in a third direction (eg, a z direction or a -z direction). In this case, the adjusting unit LP may include a cylinder. As another example, the adjusting unit LP may include a linear motor that moves the distal end EP. As another example, the control unit LP may include a rack and a pinion for moving the distal end EP. Hereinafter, for convenience of description, a case in which the adjusting unit LP includes a cylinder will be described in detail.

The controller 300 may contact the measuring member 200 to the connection part CP of the cover member CW, and may calculate the height of the bent portion of the cover member CW. In particular, the controller 300 may calculate the height of the connection part CP. Specifically, the controller 300 may be electrically connected to the gantry 30 and the measuring member 200 . The controller 300 may control the movement of the gantry 30 and the measuring member 200 . In addition, when the measuring member 200 is in contact with the connecting portion CP of the cover member CW, the control unit 300 controls the cover member CW based on the surface of the cover member CW facing the seating protrusion SP. ) to the end of the connection part CP can be calculated.

5 is a cross-sectional view schematically showing the first protrusion 120A and the measuring member 200 according to another embodiment of the present invention. 4 illustrates the first protrusion 120A and the measuring member 200 on a yz plane.

Referring to Figure 5, the height measuring device is at least a portion of the bent cover member is seated a seating portion, a protrusion surrounding at least a portion of the cover member, and the cover member in contact with the cover member to measure the height of the bent portion of the cover member A measuring member 200 may be included. In this case, the first protrusion 120A may include a first portion 121 and a second portion 122 , and the first portion 121 and the second portion 122 pass through the measuring member 200 . A groove can be defined. The groove may include a first groove H1-1 and a second groove located on the inner side of the seating portion than the first groove H1-1. In addition, the measuring member 200 may include a distal end (EP) in contact with the cover member and an adjusting unit (LP) for adjusting the positions of the distal end (EP), and the distal end (EP) is cross-sectional (eg, yz Planar view) may be provided in an inverted trapezoidal shape.

In this embodiment, the width u2 of the first groove H1-1 on the upper surface of the first part 121 and the upper surface of the second part 122 is at the bottom surface of the first groove H1-1. may be greater than the width u1 of the first groove H1-1. In this case, the shape of the first groove H1-1 may be provided to correspond to the shape of the distal end EP. Specifically, the first groove H1-1 may be provided in an inverted trapezoidal shape in cross-section (eg, on a yz plane). Accordingly, the measuring member 200 may be precisely aligned with the first groove H1-1, and may be precisely aligned with the connecting portion of the cover member to measure the height of the connecting portion.

6 is a plan view of the cover member (CW) measured by the height measuring device of the present invention. 7A is a cross-sectional view taken along line A-A' of FIG. 6 . 7B is a cross-sectional view taken along line B-B' of FIG. 6 . 7C is a cross-sectional view taken along line C-C' of FIG. 6 . 7D is a cross-sectional view taken along line D-D' of FIG. 6 .

Referring to FIG. 6 , the cover member CW may include a flat portion PP and a first bending portion BP1 , a second bending portion BP2 , and a connecting portion CP surrounding the flat portion PP. can In this case, the first bending part BP1 , the second bending part BP2 , and the connecting part CP may be at least a part bent from the flat part PP.

The first bending part BP1 may extend in a first direction (eg, an x direction or a -x direction), and the second bending part BP2 may extend in a second direction (eg, a y direction or a -y direction). direction) can be extended. In an embodiment, the cover member CW may include a plurality of first bending parts BP1 spaced apart from the flat part PP as a center. In this case, the plurality of first bending parts BP1 may be disposed to be spaced apart from each other in the second direction (eg, the y-direction or the -y-direction). In addition, the cover member may include a plurality of second bending portions BP2 spaced apart from the flat portion PP. In this case, the plurality of second bending parts BP2 may be disposed to be spaced apart from each other in the first direction (eg, the x-direction or the -x-direction). In this case, the first bending parts BP1 and the second bending parts BP2 may surround the flat part PP. In another embodiment, the cover member CW includes a plurality of first bending parts BP1 spaced apart from each other with respect to the flat part PP, but one second bending part BP2 may be provided. In another embodiment, the cover member CW includes a plurality of second bending parts BP2 spaced apart from the flat part PP as a center, but one first bending part BP1 may be provided. Hereinafter, a case in which the cover member CW includes a plurality of first bending parts BP1 and a plurality of second bending parts BP2 will be described in detail.

The first bending part BP1 may have a different curvature than the second bending part BP2 . For example, the curvature of the first bending part BP1 may be smaller than the curvature of the second bending part BP2 . In this case, the first radius of curvature of the first bending portion BP1 may be greater than the second radius of curvature of the second bending portion BP2 . As another example, the curvature of the first bending part BP1 may be greater than the curvature of the second bending part BP2 . In this case, the first radius of curvature of the first bending part BP1 may be smaller than the second radius of curvature of the second bending part BP2 . Hereinafter, a case in which the curvature of the first bending part BP1 is smaller than the curvature of the second bending part BP2 will be described in detail.

The connection part CP may connect the first bending part BP1 and the second bending part BP2. That is, the connection part CP may be a part that connects the first bending part BP1 and the second bending part BP2 having different curvatures among the cover members CW. Accordingly, the curvature of the connecting portion CP or the radius of curvature of the connecting portion CP may be gradually changed. For example, a portion of the connection portion CP connected to the first bending portion BP1 may have a first radius of curvature, and a portion of the connection portion CP connected to the second bending portion BP2 may have a second radius. A radius of curvature may be provided.

Referring to FIG. 7A , the cover member may include a flat portion PP and a first bent portion BP1 that is at least partially bent. The first bending part BP1 has a first radius of curvature R1 and may be bent.

Accordingly, the cover member includes a first surface S1 convex by the first bending portion BP1 and a second surface S2 opposite to the first surface S1 and concave by the first bending portion BP1. can do. The first surface S1 may be a surface facing the seating part when seated on the seating part of the height measuring device.

In this case, the first height Hh1 of the cover member may be defined as a vertical distance from the first surface S1 to the end of the first bending part BP1.

Referring to FIG. 7B , the cover member may include a flat portion PP and at least a partially bent connection portion. 7B shows the first connection part CP1 among the connection parts.

In this case, the second height Hh2 of the cover member may be defined as a vertical distance from the first surface S1 to the end of the first connection part CP1.

Referring to FIG. 7C , the cover member may include a flat part PP and at least a partially bent connection part. 7C illustrates the second connection part CP2 among the connection parts.

In this case, the third height Hh3 of the cover member may be defined as a vertical distance from the first surface S1 to the end of the second connection part CP2.

Referring to FIG. 7D , the cover member may include a flat part PP and a second bending part BP2 that is at least partially bent. The second bending part BP2 may be bent with a second radius of curvature R2 .

In this case, the fourth height Hh4 of the cover member may be defined as a vertical distance from the first surface S1 to the end of the second bending part BP2.

7A to 7D , the first radius of curvature R1 may be greater than the second radius of curvature R2 . Also, the first height Hh1 to the fourth height Hh4 may gradually increase. That is, the first bending part BP1 may have a different curvature from the second bending part BP2 , and the connecting parts CP1 and CP2 connecting the first bending part BP1 and the second bending part BP2 are formed. The curvature can be changed gradually.

The cover member CW as described above may protect a display member (not shown) for displaying an image. The display device in which the cover member (CW) and the display member are combined includes a liquid crystal display, an electrophoretic display, an organic light emitting display, and an inorganic EL display. Emitting Display, Field Emission Display, Surface-conduction Electron-emitter Display, Quantum Dot Display, Plasma Display, Cathode Ray Tube Display It may be a device (Cathode Ray Display) or the like.

At this time, if the curvature or height of the cover member CW, in particular, the curvature or height of the connection part CP is not accurately measured, the cover member CW may not accurately adhere to the display member at the connection part CP. Accordingly, when the cover member CW is attached to the display member, air bubbles may enter between the cover member and the display member, and a defect in the display device may occur.

The height measuring device according to an embodiment of the present invention can accurately measure the curvature or height of the cover member CW. Accordingly, it is possible to provide the cover member CW that is at least partially bent to correspond to the at least partially bent display member. Accordingly, when the cover member CW is attached to the display member, it is possible to prevent a defect from occurring due to air bubbles entering between the cover member CW and the display member.

8 is a flowchart illustrating a method for measuring the height of a cover member according to an embodiment of the present invention. 9 is a plan view illustrating that the cover member CW is seated on the seating part 110 in the height measuring method according to an embodiment of the present invention. 10 and 11 are perspective views illustrating that the measuring member 200 contacts the connection part CP to measure the height of the connection part in the method for measuring the height according to an embodiment of the present invention. 12 is a cross-sectional view illustrating that the measuring member 200 contacts the connection part CP to measure the height of the connection part in the method for measuring the height according to an embodiment of the present invention.

Referring to FIG. 8, the height measurement method includes the steps of seating the cover member on the seating portion (S100), aligning the connection portion in a groove defined between the first and second portions surrounding at least a part of the connection portion. It may include a step (S200) and a step (S300) of measuring the height of the connection part by the measuring member contacting the connection part.

Referring to FIG. 9 , the cover member CW may be seated on the mounting part 110 . The cover member CW may be seated on the seating unit 110 by a robot arm (not shown) or the like.

In FIG. 9 , the cover member CW is shown to be seated on the seating unit 110 , but in another embodiment, a display device including the cover member CW and a display member coupled to the cover member CW. may be seated on the temporary mounting unit 110 . Hereinafter, for convenience of description, a case in which only the cover member CW is seated on the seating unit 110 will be described in detail.

The cover member CW is opposite to the first surface S1 and the first surface S1 convex by the first bending part BP1 and the second bending part BP2, and the first bending part BP1 and the second bending part BP2. A second surface S2 concave by the second bending portion BP2 may be included, and the first surface S1 may be disposed to face the seating portion 110 . Accordingly, the second surface S2 may be disposed to be opposite to the seating part 110 , and may be disposed in a direction in which the protrusion part 120 protrudes.

In an embodiment, the cover member CW may be disposed on the seating protrusion SP. Specifically, the cover member CW may be supported by the first seating projection SP1 and the second seating projection SP2. When the cover member CW is disposed on the seating protrusion SP, the robot arm may be inserted into the space formed by the seating protrusion SP, and the cover member CW may be moved without damage. In another embodiment, the seating part 110 may not include the seating protrusion SP, and in this case, the front surface of the cover member CW may be disposed on the seating part 110 in full contact.

In an embodiment, the seating part 110 and the cover member CW may each have an alignment mark (not shown). In this case, the vision unit (eg, camera) can observe the alignment mark of the seating unit 110 and the alignment mark of the cover member CW, and the robot arm accurately positions the cover member CW. can be mounted on

The connection part CP of the cover member CW may be aligned with the groove H defined between the first part 121 and the second part 122 . In particular, the connection part CP may be aligned with the first groove H1 . At this time, when the position to be measured among the connection parts CP is not aligned with the first groove H1, the robot arm connects the cover member CW to the position to be measured among the connection parts CP in the first groove. The position of the cover member CW may be adjusted to be aligned with the (H1).

Then, the measuring member 200 may contact the connection part CP to measure the height of the connection part CP.

Referring to FIG. 10 , the measuring member 200 may be disposed to correspond to the first groove H1 . Then, the measuring member 200 may move in the extending direction of the gantry 30 . For example, the measuring member 200 may move in a first direction (eg, an x-direction or a -x-direction) that is an extended direction of the gantry 30 . Accordingly, the measuring member 200 may pass through the first groove H1 and the second groove H2 to be aligned with the connection part CP.

Then, referring to FIG. 11 , the distal end EP of the measuring member 200 may descend toward the connecting portion CP. In an embodiment, the adjusting unit LP may move the distal end EP in a third direction (eg, a z direction or a -z direction). Accordingly, the distal end EP may contact the connecting portion CP.

In this embodiment, the measuring member 200 may rotate based on the third direction (eg, the z-direction or the -z-direction). At this time, the measuring member 200 may pass through the first groove H1 and rotate at a position corresponding to the second groove H2. Even if the distal end EP has a flat driver shape, since the second width of the second groove H2 is greater than the first width of the first groove H1, the measuring member 200 is formed in the second groove H2. ) in the third direction (eg, z-direction or -z-direction) can rotate without interference. In another embodiment, the measuring member 200 may rotate based on a third direction (eg, z-direction or -z-direction) after moving to a position corresponding to the connection part CP.

The connection part CP is a part that connects the first bending part BP1 and the second bending part BP2 having different curvatures among the cover members CW, and the curvature of the connection part CP may be gradually changed. have. In this case, the measuring member 200 and the connecting part CP may be in contact with each other at different positions depending on the angle at which the measuring member 200 and the connecting part CP are in contact. In an embodiment of the present invention, the measuring member 200 may rotate based on a third direction (eg, z-direction or -z-direction), and the angle at which the measuring member 200 and the connection part CP are in contact with each other. can be measured differently. Accordingly, the height of the connection part CP may be more precisely measured.

In this case, the position of the bottom surface of the first groove H1 from the top surface of the seating part 110 may be higher than the contact positions of the connection part CP and the distal end part EP from the top surface of the seating part 110 . That is, the distal end portion EP disposed to correspond to the first groove H1 may be aligned to correspond to the connection portion CP and then descend to contact the connection portion CP.

Referring to FIG. 12 , the distal end EP may be in contact with the connecting portion CP. Specifically, the distal end EP may be in contact with the distal end of the connection unit CP. In this case, the height Hh of the connection part CP may be defined as a vertical distance from the first surface S1 to the end of the connection part CP. In an embodiment, the controller (not shown) of the height measuring device may calculate the height Hh of the connecting part CP when the connecting part CP is in contact with the distal end EP.

Specifically, the control unit takes the preset height of the first surface S1 as the origin, and the height of the distal end EP positioned in the first groove, and the distal end EP until the distal end EP is in contact with the connecting portion CP. ) may calculate the height of the connection part CP by synthesizing the descending distance.

In addition, the controller may calculate the radius of curvature CR of the connecting portion CP by synthesizing the height of the connecting portion CP and the degree of bending of the connecting portion CP from the flat portion PP.

The height measuring method according to an embodiment of the present invention can accurately measure the curvature or height of the cover member CW. Accordingly, it is possible to provide the cover member CW that is at least partially bent to correspond to the at least partially bent display member. Accordingly, when the cover member CW is attached to the display member, it is possible to prevent the occurrence of defects due to air bubbles entering between the cover member CW and the display member.

Although the present invention has been described with reference to one embodiment shown in the drawings, it will be understood that this is merely exemplary, and that those skilled in the art can make various modifications and variations therefrom. Accordingly, the true technical protection scope of the present invention should be determined by the technical spirit of the appended claims.

h1, h2: first depth, second depth
S1, S2: 1st side, 2nd side
BP1, BP2: first bending part, second bending part
d1, d2: first width, second width
H1, H2: first groove, second groove
1: height measuring device
30: gantry
110: seating part
120: protrusion
121, 122: first part, second part
200: measuring member
300: control unit

Claims (20)

a seating part on which at least a part of the bent cover member is seated;
a protrusion protruding from the seating portion and surrounding at least a portion of the cover member; and
A height measuring device comprising a; a measuring member contacting the cover member to measure the height of the bent portion of the cover member. According to claim 1,
The cover member includes a first bending part extending in a first direction, a second bending part extending in a second direction crossing the first direction and having a different curvature from the first bending part, and the first bending part and a connection part connecting the second bending part,
The protrusion surrounds the connection portion, the height measuring device. 3. The method of claim 2,
The connecting portion of the cover member is provided in plurality,
A plurality of the protrusions are provided, and the plurality of protrusions correspond to the plurality of connection parts, respectively, a height measuring device. 3. The method of claim 2,
The measuring member rotates based on a third direction intersecting the first direction and the second direction, the height measuring device. According to claim 1,
The protrusion includes a first portion and a second portion,
wherein the first part and the second part define a groove through which the measuring member passes. 6. The method of claim 5,
The groove includes a first groove and
A height measuring device connected to the first groove and including a second groove having a second depth greater than the first depth of the first groove. 6. The method of claim 5,
The groove includes a first groove and
A height measuring device connected to the first groove and including a second groove having a second width greater than the first width of the first groove. 6. The method of claim 5,
The groove is provided along the moving direction of the measuring member, height measuring device. 6. The method of claim 5,
The width of the groove on the upper surface of the first part and the upper surface of the second part is greater than the width of the groove on the bottom surface of the groove. According to claim 1,
The measuring member is connected to the gantry and moves in the extending direction of the gantry, a height measuring device. According to claim 1,
The measuring member is
A height measuring device comprising a distal end in contact with the cover member. 12. The method of claim 11,
The measuring member is
The height measuring device further comprising an adjusting unit for adjusting the position so that the distal end is in contact with the measuring member. 12. The method of claim 11,
The width of the distal end decreases toward the distal end of the measuring member, the height measuring device. According to claim 1,
A control unit for calculating a height of a bent portion of the cover member by contacting the measuring member and the cover member; further comprising a height measuring device. A first bending portion extending in a first direction, a second bending portion extending in a second direction intersecting the first direction and having a different curvature from the first bending portion, and the first bending portion and the second In the method for measuring the height of a cover member including a connection part for connecting the bending part,
seating the cover member on a seating part;
aligning the connecting portion with a groove defined between a first portion and a second portion surrounding at least a portion of the connecting portion; and
Measuring the height of the connecting portion by a measuring member contacting the connecting portion; Containing, a height measuring method. 16. The method of claim 15,
The cover member has a first surface convex by the first bending part and the second bending part, and
and a second surface opposite to the first surface and concave by the first bending part and the second bending part,
The seating portion facing the first surface, height measurement method. 16. The method of claim 15,
Rotating the measuring member based on a third direction intersecting the first direction and the second direction; further comprising, a height measuring method. 16. The method of claim 15,
Measuring the height of the connection part,
Comprising the step of aligning the measuring member with the connecting portion through the groove, the height measuring method. 16. The method of claim 15,
Measuring the height of the connection part,
Including the step of descending the distal end of the measuring member toward the connecting portion, the height measuring method. 20. The method of claim 19,
The groove includes a first groove and a second groove connected to the first groove and having a second depth greater than the first depth of the first groove,
The position of the bottom surface of the first groove from the top surface of the seating part is higher than the contact position of the connection part and the distal end from the top surface of the seating part, the height measuring method.

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