KR102326164B1 - Multi-Display Apparatus - Google Patents

Abstract

The multi-display device according to the present specification displays an image with a plurality of display modules arranged in a horizontal direction and a vertical direction. The plurality of display modules include a side encapsulant positioned at the end of the image display area, and are partially overlapped so that the side encapsulant is vertically staggered.

Description

Multi-Display Apparatus

This specification relates to a multi-display device.

As information technology develops, the application range of a display device for displaying information tends to gradually expand. Accordingly, it is required to implement a large-area display device. A large-area or large-sized display device is used as a display device that provides various types of information or advertisements. However, the area of a display device that can be manufactured using one base substrate is limited.

Accordingly, as an alternative to this, a method for implementing a large-area display device by combining a plurality of display modules has been proposed. For example, a large-area display device may be implemented by arranging four display modules side by side on the same plane and fixing neighboring display modules to each other. The large-area display apparatus implemented in this way may be referred to as a multi-display apparatus or a tiling display apparatus.

In the multi-display apparatus, a plurality of display modules are combined in a tiling manner to implement one large screen. Accordingly, a seam exists between each of the adjacent display modules. The seam is treated using a black colored sealant. The seam is formed in the non-display area where no image is implemented, and since the light from the display device is blocked by the black color sealant, the seam is perceived by the viewer.

In addition, the side surfaces of the display module are treated with an encapsulant, and when the display modules are arranged adjacent to each other, the side encapsulant areas of both display modules are continuously arranged, so that the non-display area becomes wider.

When the non-display area is recognized by a viewer watching the multi-display device, it prevents recognition of an image displayed on the multi-display device as a single screen, thereby reducing image immersion.

An object of the present specification is to provide a multi-display device capable of providing high-quality image information by reducing a non-display area between display modules.

The multi-display device according to an embodiment of the present specification is a multi-display device that displays an image using a plurality of display modules arranged in a horizontal direction and a vertical direction, wherein the plurality of display modules are located at the end of the display area of the image and a side encapsulant that is disposed in a partially overlapping state such that the side encapsulant is vertically staggered.

The multi-display device according to an embodiment of the present specification is a multi-display device that displays an image using a plurality of display modules arranged in a horizontal direction and a vertical direction, wherein the plurality of display modules are located at the end of the display area of the image A first display module having a first height and a second display module having a second height lower than the first height based on the front area from which the image is emitted, including a side encapsulant, the side encapsulant is vertically staggered and displays images of different sizes according to the heights of the first display module and the second display module.

The multi-display device according to the present specification minimizes the area of the non-display area generated by the side encapsulant of the display module by arranging the display modules in a partially overlapping state such that the side encapsulants of the display modules are vertically staggered when arranging the display modules. can do.

In addition, the multi-display device according to the present specification enlarges or reduces the input image compared to the image according to the height difference of each display module arranged in a staggered state, thereby providing the same image as the image provided by the display modules arranged on the same plane. It is possible to provide a visually recognizable image.

1 is a perspective view schematically illustrating a multi-display apparatus according to an embodiment of the present specification.
2 is a perspective view illustrating an example of a display module constituting the multi-display apparatus according to the first embodiment of the present specification.
3 is a cross-sectional view illustrating a part of the multi-display apparatus according to the first embodiment of the present specification.
4 is a perspective view illustrating an example of a display module constituting a multi-display device according to a second embodiment of the present specification.
5 is a cross-sectional view illustrating a part of a multi-display apparatus according to a second exemplary embodiment of the present specification.
6 is a cross-sectional view illustrating a part of a multi-display device and a comparative example according to an embodiment of the present specification;
7 is a cross-sectional view illustrating a part of the multi-display device of FIG. 6 .
8 is a diagram illustrating an image providing state of the multi-display apparatus according to the first embodiment of the present specification.
9 is a diagram illustrating an image providing state of a multi-display apparatus according to a second exemplary embodiment of the present specification.
10 is a diagram illustrating an image providing state of a multi-display apparatus according to a third exemplary embodiment of the present specification.

Advantages and features of the present specification 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 specification is not limited to the embodiments disclosed below, but will be implemented in various different forms, and only these embodiments allow the disclosure of the present specification to be complete, and common knowledge in the technical field to which this specification belongs It is provided to fully inform those who have the scope of the specification, and this specification is only defined by the scope of the claims.

The shapes, sizes, proportions, angles, numbers, etc. disclosed in the drawings for explaining the embodiments of the present specification are exemplary and are not limited to the matters shown in the present specification. Like reference numerals refer to like elements throughout. In addition, in the description of the present specification, if it is determined that a detailed description of a related known technology may unnecessarily obscure the subject matter of the present specification, the detailed description thereof will be omitted. When 'including', 'having', 'consisting', etc. mentioned in this specification are used, other parts may be added unless 'only' is used. When a component is expressed in the singular, the case in which the plural is included is included unless otherwise explicitly stated.

In the case of a description of the positional relationship, for example, when the positional relationship of two parts is described as 'on', 'on', 'on', 'beside', etc., 'right' Alternatively, one or more other parts may be positioned between the two parts unless 'directly' is used.

Although the first, second, etc. are used to describe various components, these components are not limited by these terms. These terms are only used to distinguish one component from another. Accordingly, the first component mentioned below may be the second component within the spirit of the present specification.

Each feature of the various embodiments of the present specification may be partially or wholly combined or combined with each other, technically various interlocking and driving are possible, and each of the embodiments may be independently implemented with respect to each other or may be implemented together in a related relationship. may be

Hereinafter, embodiments according to the present specification will be described with reference to the accompanying drawings. Like reference numerals refer to substantially identical elements throughout. In the following description, when it is determined that a detailed description of a known function or configuration related to the present specification may unnecessarily obscure the subject matter of the present specification, the detailed description thereof will be omitted.

1 is a perspective view schematically illustrating a multi-display apparatus 10 according to an embodiment of the present specification.

The multi-display apparatus 10 according to the embodiment includes a plurality of display modules 100 arranged in a horizontal direction and a vertical direction. The multi-display apparatus 10 may provide a single image to a viewer through the plurality of display modules 100 . Accordingly, the viewer may recognize one image provided from the multi-display apparatus 10 through a large screen corresponding to the area of the display modules 100 . If necessary, the multi-display apparatus 10 may provide a plurality of different images through the plurality of display modules 100 .

Since the multi-display apparatus 10 has a shape in which a plurality of display modules 100 are combined with each other, a seam area S exists between adjacent display modules. When the seam area (S) is recognized by the viewer, it interferes with the sense of immersion when viewing the image. The multi-display display device 10 according to the embodiment of the present specification may reduce the recognition level of the seam area S by minimizing the area of the non-display area, which is the seam area S.

In the embodiment of FIG. 1 , a case in which the multi-display apparatus 10 includes four display modules 100 is illustrated as an example, but the present invention is not limited thereto. Also, in the drawings, a case in which the display modules 100 constituting the multi-display apparatus 10 have the same area and shape is illustrated as an example, but the present invention is not limited thereto.

2 is a perspective view showing an example of the display module 100 constituting the multi-display device according to the first embodiment of the present specification, and FIG. 3 is a cross-sectional view showing a part of the multi-display device according to the first embodiment of the present specification. am.

The display module 100 according to the first embodiment of the present specification includes a thin film transistor array substrate 110 including an organic light emitting diode and an encapsulation substrate 112 covering the thin film transistor array substrate 110 . The encapsulation substrate 112 functions to protect devices disposed on the thin film transistor array substrate 110 from moisture and oxygen that may be introduced from the outside.

The thin film transistor array substrate 110 may include a plurality of pixels PIX that may be defined by a plurality of gate lines and a plurality of data lines. Each of the pixels includes an organic light emitting diode and thin film transistors for driving the same. A pad unit 120 connected to a driver for controlling an image displayed on the display module 100 may be provided on one side of the thin film transistor array substrate 110 .

and an organic light emitting diode (OLED) device. The organic light emitting diode includes an organic compound layer and an anode and a cathode facing each other with the organic compound layer interposed therebetween. The organic compound layer includes an emission layer (EML), a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL) and an electron injection layer ( At least one common layer of an electron injection layer (EIL) may be further included.

A side encapsulant B for supporting and fixing the thin film transistor array substrate 110 and the encapsulation substrate 112 is disposed on the side surface of the display module 100 . The side encapsulant B is for restricting and restricting movement of the thin film transistor array substrate 110 and the encapsulation substrate 112 , and may be formed of various materials such as metal, plastic, and alloy.

4 is a perspective view showing an example of the display module 100 constituting the multi-display device according to the second embodiment of the present specification, and FIG. 5 is a cross-sectional view showing a part of the multi-display device according to the second embodiment of the present specification. am.

The display module 100 according to the second embodiment of the present specification includes a display panel 201 , a backlight unit 202 , and a driving unit for driving the display panel 201 . The display panel 201 and the backlight unit 202 may be assembled with case members fixing them to be implemented as the display module 100 .

The display panel 201 displays an image by adjusting the light transmittance of liquid crystal, and includes a first substrate 210, a second substrate 212, and a lower polarizing film (not shown) bonded to each other with a liquid crystal layer 213 interposed therebetween. city), and an upper polarizing film (not shown). The display panel 201 drives the liquid crystal layer 213 according to the electric field formed by the data voltage applied to each pixel and the common voltage, thereby controlling the light transmittance of the liquid crystal layer 213 to display a predetermined image. . The liquid crystal layer 213 may be driven in various modes such as a twisted nematic (TN) mode, a vertical alignment (VA) mode, an in plane switching (IPS) mode, and a fringe field switching (FFS) mode, and the first substrate 210 ) and the specific configuration of the second substrate 212 may be appropriately selected corresponding to the driving mode.

For example, the first substrate 210 is a thin film transistor array substrate and may include a plurality of pixels PIX that may be defined by a plurality of gate lines and a plurality of data lines crossing each other. Each pixel PIX may include a thin film transistor connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode disposed adjacent to the pixel electrode to supply a common voltage. In this case, the common electrode may be disposed on the second substrate 212 according to the driving method of the liquid crystal layer 213 . A pad unit 220 connected to a driving unit (not shown) for driving the display panel 201 may be provided on one side of the first substrate 210 . The second substrate 212 is a color filter array substrate and may be formed to have a relatively smaller area than the first substrate 210 , but is not limited thereto. When the display panel 201 is implemented using a color filter on TFT (COT) or a TFT on color filter (TOC) method, the color filter may be formed on the first substrate 210 .

The backlight unit 202 is provided under the display panel 201 and irradiates light to the rear surface of the display panel 201 . The backlight unit 202 may be implemented as a direct type or an edge type. The edge type backlight unit 202 has a structure in which a light source is disposed to face a side surface of the light guide plate, and a plurality of optical sheets are disposed between the display panel 201 and the light guide plate. The edge-type backlight unit 202 irradiates the display panel 201 with light converted from a linear light source or a point light source into a planar light source through a light guide plate. The direct backlight unit 202 has a structure in which a plurality of light sources are disposed under the display panel 201 , and radiates light diffused through the diffusion plate to the display panel 201 .

A side encapsulant B for supporting and fixing the thin film transistor array substrate 110 and the encapsulation substrate 112 is disposed on the side surface of the display module 100 . The side encapsulant B constrains and restricts movement of the thin film transistor array substrate 110 and the encapsulation substrate 112 . The side encapsulant (B) may be formed of various materials such as metal, plastic, and alloy.

6 is a cross-sectional view illustrating a part of a multi-display apparatus and a comparative example according to an embodiment of the present specification. 6 (a) is a diagram illustrating a positional relationship between display modules 100 according to a comparative example, and (b) is a diagram illustrating a positional relationship between display modules 100 according to an embodiment of the present specification. am.

Referring to FIG. 6A , in the multi-display apparatus according to the comparative example, a plurality of display modules 100 are arranged side by side on the same plane.

and a side encapsulant (B) positioned at the end of the image display area of the display module 100 . The image display area of the display module 100 includes the thin film transistor array substrate 110 and the encapsulation substrate 112 described with reference to FIG. 3 , or includes the display panel 201 and the backlight unit 202 described with reference to FIG. 5 . can do.

The display modules 100 having the side encapsulant B are arranged side by side on the same plane. In addition, the seams between the display modules 100 are combined with each other by the side encapsulant (B). Accordingly, in the non-display area generated by the side encapsulant B, the non-display area is generated by 2W, which is twice the width W of the side encapsulant B.

Referring to FIG. 6B , in the multi-display apparatus according to the present specification, a plurality of display modules 100 are arranged in a partially overlapped state on different planes.

and a side encapsulant (B) positioned at the end of the image display area of the display module 100 . The image display area of the display module 100 includes the thin film transistor array substrate 110 and the encapsulation substrate 112 described with reference to FIG. 3 , or includes the display panel 201 and the backlight unit 202 described with reference to FIG. 5 . can do.

The display module 100 may be disposed in a partially overlapping state such that the side encapsulants B are vertically staggered. Accordingly, the non-display area generated by the side encapsulant B may be reduced than 2W, which is the width of the side encapsulant B.

Accordingly, the multi-display apparatus according to the present specification may reduce the width of the non-display area due to the seam, and may lower the recognition level of the seam area, compared to the multi-display apparatus according to the comparative example.

7 is a cross-sectional view illustrating a part of the multi-display device of FIG. 6 .

Referring to FIG. 7 , a cover window 300 protecting the display modules 100-1 and 100-2 may be disposed above the display modules 100-1 and 100-2.

Since the display modules 100-1 and 100-2 are partially overlapped so that the side encapsulants B-1 and B-2 are vertically staggered, the thickness of the display modules 100-1 and 100-2 is The difference in heights h1 and h2 from the cover window 300 may be as much as (d).

For example, the display module 100-1 that is relatively far from the cover window 300 may have a first height h1, and the display module 100-2 that is relatively close to the display module 100-2 has a second height ( h2), and the first height h1 and the second height h2 may be different by the thickness d of the display modules 100 - 1 and 100 - 2 .

Due to the height difference, the images of the display modules 100-1 and 100-2 have different perspectives. For example, an image displayed on the first display module 100-1 having a first height h1 that is relatively far from the cover window 300 is a second display having a relatively close second height h2. It may be viewed smaller than the image displayed on the module 100 - 2 .

Accordingly, each display module 100-1, 100- having a height difference by providing an image enlarged or reduced from the input image according to the height h1, h2 of each display module 100-1, 100-2. The images displayed in 2) may be viewed as images having the same perspective.

8 is a diagram illustrating an image providing state of the multi-display apparatus according to the first embodiment of the present specification.

Referring to FIG. 8 , a cover window 300 protecting the display modules 100-1 and 100-2 may be disposed above the display modules 100-1 and 100-2.

Since the display modules 100-1 and 100-2 are partially overlapped so that the side encapsulants B1 and B-2 are vertically staggered, each display module 100-1, 100-2 has a cover window. The height from 300 may be different.

When the display modules 100-1 and 100-2 collectively display the original image "I", the images of the display modules 100-1 and 100-2 have different perspectives. That is, the image displayed on the first display module 100-1 having a relatively long distance from the cover window 300 is viewed relatively small, and the second display module 100- having a relatively short distance from the cover window 300 is viewed. The image displayed in 2) can be viewed relatively large.

In order to improve this phenomenon, in the first embodiment of the present specification, the enlarged image "I ₁ " than the input original image "I" is displayed according to the height of each display module 100-1, 100-2, or The reduced image "I ₂ " can be displayed. Each display module (100-1, 100-2) displays an enlarged or reduced image according to the height, so that the viewer of the multi-display device is displayed on each display module (100-1, 100-2) having a height difference The images to be used can be recognized as images having the same perspective.

Here, the enlargement ratio and the reduction ratio of the image are the size of the display module 100, the height difference between the display modules 100-1 and 100-2, the viewing distance of the target viewer, the total screen size of the multi-display device, It may be optimized according to various conditions, such as the type of image to be mainly displayed (text, image, video, etc.).

Also, the first display module 100-1 may display the original image “I” and the second display module 100-2 may display the reduced image “I ₂ ”. Conversely, it is also possible to set the second display module 100-2 to display the original image “I” and the first display module 100-1 _{to display the enlarged image “I 1 ”.}

9 is a diagram illustrating an image providing state of a multi-display apparatus according to a second exemplary embodiment of the present specification.

Referring to FIG. 9 , cover windows 300-1 and 300-2 protecting the display modules 100-1 and 100-2 may be disposed on the display modules 100-1 and 100-2. .

Since the display modules 100-1 and 100-2 are partially overlapped so that the side encapsulants B-1 and B-2 are vertically staggered, each display module 100-1, 100-2 is Heights from the cover windows 300 - 1 and 300 - 2 may be different.

When the display modules 100-1 and 100-2 collectively display the original image "I", the images of the display modules 100-1 and 100-2 have different perspectives. For example, an image displayed on the first display module 100-1 having a relatively long distance from the cover windows 300-1 and 300-2 is viewed as relatively small, and the cover windows 300-1 and 300-2 are viewed relatively small. ), the image displayed on the second display module 100 - 2 having a relatively close distance can be viewed relatively large.

In order to improve this phenomenon, in the second embodiment of the present specification, by forming an optical pattern on the cover windows 300-1 and 300-2 according to the height of each display module 100-1, 100-2, the height The images displayed on the respective display modules 100-1 and 100-2 having a difference can be recognized as images having the same perspective.

The cover windows 300-1 and 300-2 may serve to protect the display modules 100-1 and 100-2, and to align and fix the display modules 100-1 and 100-2 in place. have. The cover windows 300-1 and 300-2 enlarge or reduce the original image “I” displayed on the respective display modules 100-1 and 100-2 so that the user can view the same image as the original image “I”. let it be

An optical pattern that functions similarly to a convex lens may be formed at a position corresponding to the first display module 100-1, and an optical pattern that functions similarly to a concave lens at a position corresponding to the second display module 100-2 An optical pattern may be formed, or it may be formed in a flat plate type pattern as shown in FIG. 9 .

As described above, the cover window having the optical pattern may be formed as a single layer, or may be formed as a multilayer as shown in FIG. 9 .

For example, the cover windows 300 - 1 and 300 - 2 may be formed of a single layer or multiple layers made of any one of glass, plastic, and film. However, the present invention is not limited thereto.

As shown in FIG. 9 , when the cover windows 300-1 and 300-2 are formed of multiple layers, the cover windows 300-1 and 300-2 are formed on the base substrate BL and upper and lower surfaces of the base substrate BL, respectively. The formed hard coating layers HL1 and HL2 may be included. Base substrate (BL) is PI (Polyimide), PET (polyethylene terephthalate), PEN (polyethylene naphthalate), PC (polycarbonate), PES (polyethersulfone), PAR (polyarylate), PSF (polysulfone), COC (cyclic-olefin copolymer) It may be made of a material such as The hard coating layers HL1 and HL2 are provided to cover the base substrate BL, and may function to protect the surface of the base substrate BL. The optical pattern may be formed on the upper or lower surfaces of the cover windows 300 - 1 and 300 - 2 , or may be formed on both the upper and lower surfaces of the cover windows 300 - 1 and 300 - 2 .

When the cover windows 300-1 and 300-2 have the structure shown in FIG. 9, the optical pattern 310 may be formed on the upper hard coat layer HL1 or the lower hard coat layer HL2, and It may be formed on both of the coating layers HL1 and HL2. The optical pattern may be formed using a method such as injection molding or polishing, but is not limited thereto.

When the optical pattern formed on the cover windows 300-1 and 300-2 is formed in the convex lens type 300-1, the enlarged image "I' than the original image "I" displayed on the display module 100-1 " may be displayed. According to the same principle, when the concave lens type is formed, an image reduced from the original image "I" may be displayed. When the optical pattern is formed in the flat plate type 300-2, an image I having the same size as the original image “I” displayed on the display module 100-2 may be displayed.

Each display module 100-1, 100-2 forms an optical pattern of a convex lens, a concave lens, and a flat panel type on the cover windows 300-1 and 300-2 according to the height, so that each display module 100- 1 and 100-2), by controlling the size of the images displayed on the screen, the viewer can recognize the images displayed on the display modules 100-1 and 100-2 having the height difference as images with the same perspective. .

Here, the enlargement ratio and the reduction ratio of the image are the size of the display modules 100-1 and 100-2, the height difference between the display modules 100-1 and 100-2, the viewing distance of the target viewer, and the multi-display device. It can be optimized according to various conditions, such as the full screen size of the screen and the type of image to be mainly displayed (text, image, video, etc.).

10 is a diagram illustrating an image providing state of a multi-display apparatus according to a third exemplary embodiment of the present specification.

For example, when the size of the display module is 55 inches and the thickness d is 3 cm, an appropriate ratio of the image displayed on the display module B relatively far from the cover window can be calculated to be about 102%. For example, a difference in image size between the display module A and the display module B may occur by about 2%. The size or thickness of the display module does not limit the content of the present specification.

Accordingly, the display panel A displays an image reduced by 1% compared to the original image, and the display module B displays an image enlarged by 1% compared to the original image, thereby reducing the height difference between the two display modules.

When it is desired to reduce the height difference by forming an optical pattern on the cover window, a convex lens type optical pattern may be formed on the cover window located on the upper portion of the display module B. FIG. When the difference in image size between display module A and display module B is about 2%, a convex lens type optical pattern having a curvature of at least 62.35 cm to about 1217 cm based on 55 inches, specifically, a curvature of 608.5 cm is formed. Thus, it is possible to alleviate the height difference between the two display modules.

In addition, the multi-display apparatus according to an embodiment of the present specification may be applied to a large or large-area display module such as a public display or a digital signage. Digital signage can be installed in public or commercial spaces.

A multi-display device according to an embodiment of the present specification is a multi-display device that displays an image using a plurality of display modules arranged in a horizontal direction and a vertical direction, wherein the plurality of display modules are located at the end of the display area of the image. A side encapsulant is included, and the side encapsulant is disposed in a partially overlapping state so that the vertical encapsulant is staggered.

The plurality of display modules may include a first display module having a first height based on a front area from which an image is emitted and a second display module having a second height lower than the first height.

The first display module may display an enlarged image compared to the input image, and the second display module may display a reduced image compared to the input image.

The first display module may display an image having the same size as the input image, and the second display module may display a reduced image compared to the input image.

The first display module may display an enlarged image compared to the input image, and the second display module may display an image having the same size as the input image.

It may further include a cover window disposed on the display module.

The cover window may include an optical pattern for enlarging an image displayed on the first display module and an optical pattern for reducing an image displayed on the second display module.

The cover window may include an optical pattern for reducing an image displayed in an area corresponding to the second display module.

The cover window may include an optical pattern for magnifying an image displayed in an area corresponding to the first display module.

A multi-display device according to an embodiment of the present specification is a multi-display device that displays an image using a plurality of display modules arranged in a horizontal direction and a vertical direction, wherein the plurality of display modules are located at the end of the display area of the image. A first display module including a side encapsulant and having a first height based on the front area from which an image is emitted and a second display module having a second height lower than the first height are arranged such that the side encapsulant is vertically staggered. and displays images of different sizes according to the height of the first display module or the second display module.

The first display module may display a larger image than the second display module.

The second display module may display a smaller image than the first display module.

Those skilled in the art through the above-described contents will be able to make various changes and modifications without departing from the spirit of the present specification. Accordingly, the technical scope of the present specification should not be limited to the contents described in the detailed description of the specification, but should be defined by the claims.

100: display module B: side sealing material
300: cover window

Claims (12)

a plurality of display modules arranged in a horizontal direction and a vertical direction to display an image; and
and a cover window disposed on the display module,
The plurality of display modules,
a side encapsulant positioned at the end of the display area of the image and partially overlapping to form a vertical staggered state; and
A first display module having a first height based on a front area from which the image is emitted and a second display module having a second height lower than the first height,
The cover window is
an optical pattern magnifying the image displayed on the first display module;
A multi-display device comprising an optical pattern for reducing the image displayed on the second display module.
delete delete delete delete delete delete delete delete In the multi-display apparatus for displaying an image with a plurality of display modules arranged in a horizontal direction and a vertical direction,
The plurality of display modules,
and a side encapsulant positioned at the end of the display area of the image,
A first display module having a first height based on the front area from which the image is emitted and a second display module having a second height lower than the first height are arranged such that the side encapsulants are vertically staggered, A multi-display apparatus for displaying images having different sizes according to the height of the first display module or the second display module.
11. The method of claim 10,
The first display module is a multi-display device for displaying a larger image than the second display module. 11. The method of claim 10,
The second display module displays a reduced image than the first display module, a multi-display device.

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