KR102293891B1 - Device for fabricating window of display device - Google Patents

Abstract

The present invention relates to a window forming apparatus for a display device capable of preventing the surface of the window from being roughened, comprising: a pedestal on which a window of a curved display device is placed and having a suction hole at an edge forming a curved surface; and a buffer member positioned on the suction hole.

Description

Window forming device for display device {DEVICE FOR FABRICATING WINDOW OF DISPLAY DEVICE}

The present invention relates to a window forming apparatus for a display device, and more particularly, to a window forming apparatus for a display device capable of preventing the surface of a window from being roughened.

The curved display device includes a window having both edges having a curved shape. The curved shape of this window is made by a forming device. That is, in a state where the edge of the window is placed on the edge of the support part having a round curved shape, the window has a curved shape as the edge of the window is in close contact with the edge of the support part by the suction force generated by the suction hole.

However, the conventional molding apparatus has the following problems.

That is, since the suction hole is in direct contact with the edge of the window during the suction process, a protrusion protruding to a predetermined height is formed on the surface of the window in contact with the suction hole. As a result, there is a problem in that the surface of the window is rough.

SUMMARY OF THE INVENTION The present invention is to solve the above problems, and an object of the present invention is to provide a window forming apparatus for a display device capable of preventing the surface of the window from being roughened.

A window forming apparatus for a display device according to the present invention for achieving the above object includes: a pedestal on which a window of a curved display device is placed and having a suction hole at an edge forming a curved surface; and a buffer member positioned on the suction hole.

The cushioning member covers the entire area of the pedestal.

The cushioning member covers the edge of the pedestal.

The buffer member is made of any one of a porous material, a foaming agent, and a resin.

The window forming apparatus for a display device according to the present invention has the following effects.

The buffer member of the present invention is located between the suction hole and the window. Therefore, the suction hole and the window do not directly contact. Accordingly, during the molding process, no protrusions are formed on the window.

1 is a perspective view of a window forming apparatus for a display device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view taken along line II′ of FIG. 1 .
3 is a view showing a state that the window of FIG. 2 is placed on the pedestal.
Figure 4 is a view showing another embodiment of the buffer member of Figure 1;

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 embodied in various different forms, 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. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques have not been specifically described in order to avoid obscuring the present invention. Like reference numerals refer to like elements throughout.

In order to clearly express various layers and regions in the drawings, the thicknesses are enlarged. Throughout the specification, like reference numerals are assigned to similar parts. When a part of a layer, film, region, plate, etc. is said to be “on” another part, it includes not only cases where it is “directly on” another part, but also cases where there is another part in between. Conversely, when we say that a part is "just above" another part, we mean that there is no other part in the middle. Also, when a part of a layer, film, region, plate, etc. is said to be “under” another part, it includes not only the case where the other part is “directly under” but also the case where there is another part in between. Conversely, when we say that a part is "just below" another part, it means that there is no other part in the middle.

Spatially relative terms "below", "beneath", "lower", "above", "upper", etc. It can be used to easily describe a correlation between an element or components and other elements or components. Spatially relative terms should be understood as terms including different orientations of the device during use or operation in addition to the orientation shown in the drawings. For example, when an element shown in the figures is turned over, an element described as "beneath" or "beneath" another element may be placed "above" the other element. Accordingly, the exemplary term “below” may include both directions below and above. The device may also be oriented in other orientations, and thus spatially relative terms may be interpreted according to orientation.

In the present specification, when a part is said to be connected to another part, it includes not only a case in which it is directly connected, but also a case in which it is electrically connected with another element interposed therebetween. In addition, when it is said that a part includes a certain component, this means that other components may be further included, rather than excluding other components, unless otherwise stated.

In this specification, terms such as first, second, third, etc. may be used to describe various components, but these components are not limited by the terms. The above terms are used for the purpose of distinguishing one component from other components. For example, without departing from the scope of the present invention, a first component may be referred to as a second or third component, and similarly, the second or third component may be alternately named.

Unless otherwise defined, all terms (including technical and scientific terms) used herein may be used with the meaning commonly understood by those of ordinary skill in the art to which the present invention belongs. In addition, terms defined in a commonly used dictionary are not to be interpreted ideally or excessively unless clearly specifically defined.

1 is a perspective view of a window forming apparatus for a display device according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along line II′ of FIG. 1 . And, FIG. 3 is a view showing a state that the window of FIG. 2 is placed on the pedestal 102 .

The window forming apparatus according to the present invention, as shown in FIG. 1 , includes a base plate 101 , a pedestal 102 and a buffer member 200 .

The base plate 101 may have a rectangular shape. The base plate 101 may be made of a metal material.

The pedestal 102 is located on the base plate 101 . The pedestal 102 has a smaller length and width than the base plate 101 . Meanwhile, the pedestal 102 may have a greater height than the base plate 101 . That is, in the length in the X-axis direction, the pedestal 102 may have a smaller length than the base plate 101 . And, in the width in the Y-axis direction, the pedestal 102 may have a smaller width than the base plate 101 . And in the height in the Z-axis direction, the pedestal 102 may have a greater height than the base plate 101 . The pedestal 102 may be made of a metal material.

Both edges of the pedestal 102 form a curved shape. For example, the pedestal 102 may include a body portion 115 and protrusions 111 and 112 protruding from both edges of the body portion 115 , the protrusions 111 and 112 . Opposing surfaces of may form a curved surface shape. In addition, a boundary between any one of the protrusions 111 and 112 and the body 115 may also have a curved shape. Similarly, a boundary between the other one of the protrusions 111 and 112 and the body 115 may also have a curved shape.

The pedestal 102 has at least one suction hole 133 and at least one suction pipe 141 , 142 , 143 . The suction hole 133 is located on opposite surfaces of the protrusions 111 and 112 . When any one protrusion includes two or more suction holes 133 , the two or more suction holes 133 are disposed along the surface of the protrusion. That is, the two or more suction holes 133 are arranged along the X-axis direction.

The suction pipes 141 , 142 , and 143 may be divided into an upper suction pipe 141 , an intermediate suction pipe 142 , and a lower suction pipe 143 connected to each other. One end of the upper suction pipe 141 is connected to the suction hole 133 . Here, one end of the upper suction pipe 141 itself may be the suction hole 133 . Both ends of the intermediate suction pipe 142 are connected to each of the upper suction pipes 141 facing each other. On the other hand, the central portion of the intermediate suction pipe 142 is opened, and this opening is connected to the lower suction pipe 143 . Although not shown, the lower suction pipe 143 may be connected to a vacuum pump that sucks air.

The cushioning member 200 is located on the pedestal 102 . At this time, the buffer member 200 is positioned on the pedestal 102 to cover all the suction holes 133 . The buffer member 200 may have the same area as the pedestal 102 , or may have a smaller area than the pedestal 102 .

The buffer member 200 may be attached to the pedestal 102 through an adhesive member (not shown). On the other hand, unlike this, the buffer member 200 may be adhered to the window 300 . In this case, after the forming process of the window 300 is completed, the buffer member 200 is removed from the window 300 . This is done.

The buffer member 200 may be made of any one of a porous material, a foaming agent, and a resin. Here, as the porous material, zeolite, activated carbon, aluminum porous metal (Al-porous metal), copper porous metal, nickel porous metal, silver porous metal, etc. may be used.

The window 300 to be molded may be placed on the pedestal 102 including the cushioning member 200 . The window 300 may be an upper case of a terminal such as a mobile phone.

The window 300, as shown in FIGS. 1 and 2, forms an initial flat rectangular shape. At this time, the window 300 is heated by heat. As shown in FIG. 3 , when the window 300 is placed on the pedestal 102 , both edges of the window 300 are in contact with both edges of the pedestal 102 , and both edges of the window 300 are bent. all. At this time, as air is sucked through the suction holes 133 , both edges of the window 300 come into close contact with the cushioning member 200 positioned at both edges of the pedestal 102 . Accordingly, the window 300 has a shape having a curved surface. On the other hand, since direct contact between the suction hole 133 and the window 300 is prevented by the buffer member 200 , the protrusion is not formed on the window 300 .

FIG. 4 is a view showing another embodiment of the buffer member 200 of FIG. 1 .

The cushioning member 200 may have a shape that covers only both edges of the pedestal 102 , as shown in FIG. 4 . 4 , the buffer member 200 covers only the suction holes 133 .

5 is a block diagram of a display device to which the window 300 of FIG. 1 is coupled.

As shown in FIG. 5 , the display device 555 includes a display panel 400 and a window 300 surrounding the display panel 400 .

The display panel 400 includes a thin and flexible substrate like paper. Accordingly, the display panel 400 may be easily bent, bent, or rolled. The display panel 400 is fastened to the window 300 and maintained in a bent shape.

The display device 555 may be implemented as a display device that can be bent and unfolded, such as a flexible display, as well as a shape like the display panel 400 . The display panel 400 may be a liquid crystal display panel, an organic light emitting diode display panel, or the like.

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and it is common in the technical field to which the present invention pertains that various substitutions, modifications and changes are possible within the scope without departing from the technical spirit of the present invention. It will be clear to those who have the knowledge of

300: Windows 101: base plate
102: pedestal 111, 112: protrusion
115: body 200: buffer member
133: suction hole

Claims (4)

a pedestal on which a window of the curved display device is placed and having a suction hole at an edge forming a curved surface; and
It includes a buffer member located on the suction hole,
The buffer member is a window forming apparatus for a display device attached to the window. The method of claim 1,
The cushioning member is a window forming apparatus for a display device covering the entire area of the pedestal. The method of claim 1,
The cushioning member is a window forming apparatus for a display device that covers an edge of the pedestal. The method of claim 1,
The buffer member is a window forming apparatus for a display device made of any one of a porous material, a foaming agent, and a resin.

Images