KR20180128550A - Tiling Display Device - Google Patents

Abstract

Provided is a tiling display device which can maximize immersion of a user while providing high-quality visual information by reducing a deliberating cognitive level. According to the present invention, the tiling display device configures a screen by arranging n (n is an integer bigger than or equal to two) number of display modules in parallel. The tiling display device comprises: a transparent resin arranged among the display modules which are adjacent to each other; and particles dispersed in the transparent resin to scatter light.

Description

[0001] TILING DISPLAY DEVICE [0002]

The present invention relates to a tiling display.

As the information technology is developed, the market of a display device, which is a connection medium between users and information, is getting larger and its importance is increasing. Accordingly, various types of display devices such as an organic light emitting display (OLED), a liquid crystal display (LCD), and a plasma display panel (PDP) have been developed, .

Such display devices can be used as a relatively small display device such as a TV, a monitor, and various personal portable digital devices, and can display a relatively large display such as a public display and a digital signage It can also be used as a device.

The above-mentioned large-sized display device is generally used for outdoor purposes and is used for providing information to a large number of users. Therefore, the large-sized display device needs to be implemented in a large area so that users can easily view the information provided from the display device even at a long distance.

However, despite the advancement in manufacturing technology, the area of a display device that can be manufactured using a single base substrate is limited. That is, when a large-area display device is manufactured using a single base substrate, it is difficult to secure a yield higher than a certain level.

In addition, in view of the fact that the manufacturing environment significantly changes in accordance with the increase in the area of the display device, in order to manufacture a large-area display device using one base substrate, it is required to construct a new manufacturing environment, Which is a problem.

In order to solve the above-mentioned problems, a method of implementing a large-area display device by combining a plurality of display devices having the largest area that can be manufactured with stabilized current technology has been proposed. For example, by arranging the four display devices provided on a horizontal plane and fixing the adjacent display devices mutually, a large-area display device can be realized. A large-area display device implemented in this manner can be referred to as a tiling display device.

In the tiling display apparatus, since a plurality of divided display apparatuses are combined with each other, a seam (or a joint) exists between neighboring display apparatuses. The shim portion is typically treated using a black sealant. Since such a shim corresponds to a non-display portion (or a bezel region) in which an image is not implemented, a sense of discomfort and / or a sense of heterogeneity is given to the user who watches the tiling display device, Therefore, in providing a tiled display device, a method for lowering the perception level of the tiled display needs to be proposed.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a tiling display device which can maximize user's immersion while providing high-quality visual information by lowering the perception level.

In the tiling display apparatus according to the present invention, n (n is an integer of 2 or more) display modules are arranged in parallel to form a screen. The tiling display comprises a transparent resin disposed between neighboring display modules; And particles dispersed in the transparent resin and scattering light.

The content of the particles may range from 1 wt% to 5 wt%.

The display module may include a plurality of pixels. The width of the transparent resin in one direction may be equal to or narrower than the width in one direction of the pixel adjacent to the transparent resin.

The display module may include a display unit for displaying an image and a non-display unit outside the display unit. The non-display portion adjacent to the transparent resin may include particles scattering light.

The tiling display device according to the present invention may further include a light blocking material provided at a lower end of the transparent resin.

The tiling display apparatus according to the present invention may further include a cover window disposed on the display modules.

The cover window may include an optical pattern provided at a position corresponding to the transparent resin and changing the path of the provided light.

The optical pattern may have a convex lens shape.

The display module may include a plurality of pixels. The optical pattern may enlarge and provide the pixel image adjacent to the transparent resin.

The cover window comprises: a base substrate; An upper hard coating layer disposed on the base substrate; And a lower hard coating layer disposed under the base substrate, wherein the optical pattern may be formed on at least one of the upper hard coating layer and the lower hard coating layer.

The particles may be coated with a metal material.

The tiling display apparatus according to the present invention processes the core portion using a transparent resin so as to transmit light provided from the display module and disperses the particles in the transparent resin so that the light can be effectively scattered. Accordingly, since the present invention can maintain a certain amount of light even at the shim portion, it is possible to reduce the recognition level of the shim, and it is possible to minimize the sense of disconnection and / or sense of heterogeneity that a user recognizing image information can feel. Therefore, the present invention has an advantage of being able to provide a tiling display device capable of maximizing user's immersion while providing high-quality visual information.

1 is a perspective view schematically showing a tiling display device according to the present invention.
2 is a perspective view showing an example of a display module constituting the tiling display device according to the first embodiment of the present invention.
3 is a cross-sectional view illustrating a part of a tiling display apparatus according to a first embodiment of the present invention.
4 is a perspective view showing an example of a display module constituting a tiling display device according to a second embodiment of the present invention.
5 is a cross-sectional view illustrating a portion of a tiling display device according to a second embodiment of the present invention.
6 is a cross-sectional view illustrating a portion of a tiling display apparatus according to a third embodiment of the present invention.
7 is a cross-sectional view illustrating a portion of a tiling display apparatus according to a fourth embodiment of the present invention.
8 is a cross-sectional view illustrating a tiling display device according to a fifth embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Like reference numerals throughout the specification denote substantially identical components. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In the following description, a detailed description of known technologies or configurations related to the present invention will be omitted when it is determined that the gist of the present invention may be unnecessarily obscured. In describing the various embodiments, the same components are represented at the outset and may be omitted in other embodiments.

Terms including ordinals, such as first, second, etc., may be used to describe various elements, but the elements are not limited to these terms. The terms are used only for the purpose of distinguishing one component from another.

≪ Embodiment 1 >

1 is a perspective view schematically showing a tiling display device according to the present invention. 2 is a perspective view showing an example of a display module constituting the tiling display device according to the first embodiment of the present invention. 3 is a cross-sectional view illustrating a part of a tiling display apparatus according to a first embodiment of the present invention.

Referring to FIGS. 1 to 3, the tiling display apparatus according to the first embodiment of the present invention includes n (n is an integer of 2 or more) display modules 100. The display modules 100 are arranged side by side on the same horizontal plane. That is, the display modules 100 are arranged such that the respective display portions on which the images are displayed face in one direction.

The tiling display device can provide a single image to a user through a plurality of display modules 100 arranged in parallel on a horizontal plane. That is, the user can recognize one piece of image information provided from the tiling display device through a large screen corresponding to the area of the display modules 100. If desired, the tiling display device may provide a plurality of different images through a plurality of display modules 100 arranged in parallel on a horizontal plane.

In the drawing, the case where the tiling display device includes four display modules 100 is shown as an example, but the present invention is not limited thereto. In the drawings, the case where the display module 100 constituting the tiling display device has substantially the same area and shape is shown as an example, but the present invention is not limited thereto.

The display module 100 includes an organic light emitting diode (OLED) device. The organic light emitting diode includes an anode and a cathode opposing each other with the organic compound layer and the organic compound layer interposed therebetween. The organic compound layer includes an emission layer (EML) and includes a hole injection layer (HIL), a hole transport layer (HTL), an electron transport layer (ETL), and an electron injection layer An electron injection layer (EIL), or the like.

The display module 100 includes a thin film transistor array substrate 110 and a driving unit (not shown) for driving the same. The display module 100 may further include an encapsulation substrate 112 covering the thin film transistor array substrate 110. The sealing substrate 112 functions to protect elements disposed on the thin film transistor array substrate 110 from moisture and oxygen that may flow from the outside.

The thin film transistor array substrate 110 may include a plurality of pixels PIX defined by a plurality of data lines (not shown). Each of the pixels PIX includes an organic light emitting diode and thin film transistors for driving the organic light emitting diode. At one side of the thin film transistor array substrate 110, a pad unit 120 connected to a driving unit (not shown) for driving a display device may be provided.

A transparent resin TRS is disposed between neighboring display modules 100. The transparent resin TRS may be bonded to the side surfaces of neighboring display modules 100 to restrict and restrict mutual movement. The tiling display device of the present invention uses a transparent material that can transmit light without using a black color material for blocking light in order to process a seam (or a joint) portion. Since the tiling display device according to the present invention processes the shim portion using the transparent resin TRS, light of substantially the same wavelength as the adjacent pixel PIX can be emitted even at the shim portion. Accordingly, the present invention can remarkably lower the perception level compared to the conventional art. The transparent resin (TRS) may be an acrylic-based resin.

Transparent resin (TRS) includes particles (PT) (particles). Particles (PT) may be beads commonly used. The particles PT are dispersed and disposed in the transparent resin TRS. Light provided from the display module 100 toward the transparent resin TRS is transmitted through the transparent resin TRS and scattered by the particle PT. By dispersing particles (PT) having a predetermined distribution in a transparent resin (TRS), it is possible to induce light to be transmitted through the core portion but scattered without being concentrated in a specific region.

In a conventional tiling display device, neighboring display modules 100 are bonded using a black color material. Therefore, as the light provided from the display module 100 is blocked by the black color material, the shim portion is clearly visible to the user. Alternatively, the tiling display device according to the present invention may be configured to process the shim portion using a transparent resin (TRS) so that the light provided from the display module 100 can be transmitted, (PT) is dispersed in the particles (TRS). Accordingly, since the present invention can maintain a certain amount of light even in the heart portion, it is possible to reduce the perceived level of the conventional image sensor, and thus it is possible to minimize the sense of discontinuity and / or heterogeneity that the user perceives the image information. Therefore, the present invention has an advantage of being able to provide a tiling display device capable of maximizing user's immersion while providing high-quality visual information.

The content of the particles (PT) may range from 1 wt% to 30 wt%. Preferably, it may range from 1 wt% to 5 wt%. When the particles are contained at less than 1 wt%, the light may not scatter well. If the particle content is more than 5 wt%, the acrylic resin may become brittle and the light may stay inside.

The particle (PT) dispersed in the transparent resin (TRS) may be coated with a metal material capable of reflecting light. The metal material may include silver (Ag), gold (Au), copper (Cu), and combinations thereof. In this case, the light can be scattered more effectively. Further, the particles PT dispersed in the transparent resin TRS may be coated with TiO 2 having a high refractive index.

It is preferable that the width W1 of the transparent resin TRS in one direction is equal to the width W2 of the pixel PIX in one direction or narrower than the width W2 of the pixel PIX in one direction Do. The width of the transparent resin TRS in one direction corresponds to the interval between adjacent display modules 100. [ The present invention has the advantage of further reducing the depth of consciousness by reducing the width of the shim relative to the width of the adjacent pixel (PIX).

≪ Embodiment 2 >

4 is a perspective view showing an example of a display module constituting a tiling display device according to a second embodiment of the present invention. 5 is a cross-sectional view illustrating a portion of a tiling display device according to a second embodiment of the present invention.

Referring to FIGS. 1, 4, and 5, the tiling display apparatus according to the second embodiment of the present invention includes n (n is an integer of 2 or more) display modules 100. The display modules 100 are arranged side by side on the same horizontal plane. That is, the display modules 100 are arranged such that the respective display portions on which the images are displayed face in one direction.

The tiling display device can provide a single image to a user through a plurality of display modules 100 arranged in parallel on a horizontal plane. That is, the user can recognize one piece of image information provided from the tiling display device through a large screen corresponding to the area of the display modules 100. If necessary, the tiling display device may provide a plurality of different input images through a plurality of display modules 100 arranged in parallel on a horizontal plane.

In the drawing, the case where the tiling display device includes four display modules 100 is shown as an example, but the present invention is not limited thereto. In the drawings, the case where the display module 100 constituting the tiling display device has substantially the same area and shape is shown as an example, but the present invention is not limited thereto.

The display module 100 includes a display panel 201, a backlight unit 202, and a driving unit (not shown) for driving the backlight unit. The display panel 201 and the backlight unit 202 may be assembled together with case members for fixing the display panel 201 and the backlight unit 202 to be realized by the display module 100.

The display panel 201 displays an image by adjusting the light transmittance of the liquid crystal. The display panel 201 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. And an upper polarizing film (not shown), and the like. The display panel 201 displays a predetermined image by controlling the light transmittance of the liquid crystal layer 213 by driving the liquid crystal layer 213 according to an electric field formed by a data voltage and a common voltage applied to each pixel . The liquid crystal layer 213 may be driven in various modes such as TN (Twisted Nematic) mode, VA (Vertical Alignment) mode, IPS (In plane switching) mode and FFS And the second substrate 212 can be appropriately selected corresponding to the drive mode.

For example, the first substrate 210 is a thin film transistor array substrate, and includes a plurality of pixels PIX defined by a plurality of gate lines (not shown) and a plurality of data lines (not shown) . Each pixel PIX may include a thin film transistor (not shown) connected to a gate line and a data line, a pixel electrode connected to the thin film transistor, and a common electrode arranged adjacent to the pixel electrode to which a common voltage is supplied. At this time, the common electrode may be disposed on the second substrate 212 according to the driving method of the liquid crystal layer 213. [ A pad 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 may be a color filter array substrate having a relatively smaller area than the first substrate 210, but is not limited thereto. When the display panel 201 is implemented by a COT (Color Filter On TFT) or a TOC (TFT On Color filter) method, a 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 back 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 so as to face the side face 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 the linear light source or the point light source into the surface light source through the light guide plate. The direct-type backlight unit 202 has a structure in which a plurality of light sources are disposed under the display panel 201, and irradiates the display panel 201 with light diffused through the diffusion plate.

A transparent resin TRS is disposed between neighboring display modules 100. The transparent resin TRS may be bonded to the side surfaces of neighboring display modules 100 to restrict and restrict mutual movement. The tiling display device of the present invention uses a transparent material that can transmit light without using a black color material for blocking light in order to process a seam (or a joint) portion. The transparent resin (TRS) may be an acrylic-based resin.

Transparent resin (TRS) includes particles (PT) (or fine particles). The particles PT are dispersed and disposed in the transparent resin TRS. Light provided from the display module 100 toward the transparent resin TRS is transmitted through the transparent resin TRS and scattered by the particle PT. By dispersing particles (PT) having a predetermined distribution in a transparent resin (TRS), it is possible to induce light to be transmitted through the core portion but scattered without being concentrated in a specific region.

In a conventional tiling display device, neighboring display modules 100 are bonded using a black color material. Therefore, as the light provided from the display module 100 is blocked by the black color material, the shim portion is clearly visible to the user. Alternatively, the tiling display according to the present invention may include a transparent resin (TRS) for transmitting light provided from the display module 100, and a transparent resin (TRS) (PT). Accordingly, since the present invention can maintain a certain amount of light even at the shim portion, it is possible to reduce the recognition level of the shim, and it is possible to minimize the sense of disconnection and / or sense of heterogeneity that a user recognizing image information can feel. Therefore, the present invention has an advantage of being able to provide a tiling display device capable of maximizing user's immersion while providing high-quality visual information.

The content of the particles (PT) may range from 1 wt% to 30 wt%. Preferably, it may range from 1 wt% to 5 wt%. The particle (PT) dispersed in the transparent resin (TRS) may be coated with a metal material capable of reflecting light. The metal material may include silver (Ag), gold (Au), copper (Cu), and combinations thereof.

It is preferable that the width W1 of the transparent resin TRS in one direction is equal to the width W2 of the pixel PIX in one direction or narrower than the width W2 of the pixel PIX in one direction Do. The width of the transparent resin TRS in one direction corresponds to the interval between adjacent display modules 100. [ The present invention has the advantage of further reducing the depth of consciousness by reducing the width of the shim relative to the width of the adjacent pixel (PIX).

≪ Third Embodiment >

6 is a cross-sectional view illustrating a portion of a tiling display apparatus according to a third embodiment of the present invention.

Referring to FIG. 6, the tiling display apparatus according to the third embodiment of the present invention includes n (n is an integer of 2 or more) display modules 100. The display modules 100 are arranged side by side on the same horizontal plane. That is, the display modules 100 are arranged in such a manner that the respective display portions AA to which the images are displayed face in one direction. A transparent resin TRS is disposed between neighboring display modules 100. The transparent resin TRS may be bonded to the side surfaces of neighboring display modules 100 to restrict and restrict mutual movement. In the transparent resin TRS, the particles PT are dispersed and arranged.

The display module 100 includes a display portion AA on which an image is displayed and a non-display portion NA on the outside of the display portion AA. The display unit AA has a predetermined transmittance so that light for realizing an image can be transmitted. On the other hand, since the non-display area NA corresponds to an area where the image is not implemented, the non-display area NA may include a light blocking material (black matrix, etc.) to prevent unnecessary light leakage. In this case, the non-display portion NA adjacent to the transparent resin TRS can be recognized by the user as an extension portion of the core.

In order to prevent this, the tiling display according to the third embodiment of the present invention can inject particles PT into the non-display portion NA of the display module 100 adjacent to the transparent resin TRS. The portion into which the particle PT is injected may be the non-display portion NA of the sealing layer 112 (Fig. 3) adjacent to the transparent resin TRS in the case of the first embodiment and the transparent resin TRS in the case of the second embodiment, (NA) of the first substrate 210 (Fig. 4) and / or the second substrate 212 (Fig. 4) of the display panel 201 (Fig. Accordingly, the present invention can provide a tiling display device capable of reducing the perception level more effectively, thereby maximizing user's immersion while providing high-quality visual information.

<Fourth Embodiment>

7 is a cross-sectional view illustrating a portion of a tiling display apparatus according to a fourth embodiment of the present invention.

Referring to FIG. 7, the tiling display apparatus according to the fourth embodiment of the present invention includes n (n is an integer of 2 or more) display modules 100. The display modules 100 are arranged side by side on the same horizontal plane. That is, the display modules 100 are arranged such that the respective display portions on which the images are displayed face in one direction. A transparent resin TRS is disposed between neighboring display modules 100. The transparent resin TRS may be bonded to the side surfaces of neighboring display modules 100 to restrict and restrict mutual movement. In the transparent resin TRS, the particles PT are dispersed and arranged.

When the tiling display device implements a black image, the transparency of the transparent resin (TRS) allows the shim to be recognized as it is to the user. In order to prevent this, the tiling display according to the fourth embodiment of the present invention may include a light blocking material BS provided at the lower end of the transparent resin TRS. For example, a black color material may be injected into the lower end of the transparent resin TRS, and a black color structure may be further provided at the lower end of the transparent resin TRS.

The tiling display device according to the fourth embodiment of the present invention can effectively reduce the perception level of the deliberation without being bound to the type of the image and can provide a tiling display capable of maximizing the user's immersion degree while providing high- Device can be provided.

<Fifth Embodiment>

8 is a cross-sectional view illustrating a tiling display device according to a fifth embodiment of the present invention.

8, the tiling display according to the fifth embodiment of the present invention includes n display modules 100 (n is an integer of 2 or more) and a cover window 300 disposed on the display modules 100. [ . The display modules 100 are arranged side by side on the same horizontal plane. That is, the display modules 100 are arranged such that the respective display portions on which the images are displayed face in one direction. A transparent resin TRS is disposed between neighboring display modules 100. The transparent resin TRS may be bonded to the side surfaces of neighboring display modules 100 to restrict and restrict mutual movement. In the transparent resin TRS, the particles PT are dispersed and arranged.

The cover window 300 may function to protect the display modules 100 and to align and fix the display modules 100 in place. The cover window 300 includes an optical pattern 310 for controlling the direction of light travel so that the sim is not perceived by the user. The optical pattern 310 is formed at a position corresponding to the transparent resin TRS. Preferably, the optical pattern 310 may be positioned to cover a pixel closest to the transparent resin TRS and the transparent resin TRS.

The optical pattern 310 provides the user with an enlarged image of the pixel by changing the path of light provided from the pixel adjacent to the transparent resin TRS. That is, the optical pattern 310 enlarges the pixel adjacent to the transparent resin TRS so that the non-display portion (or the bezel) and the shim portion of the display module 100 are relatively unrecognizable to the user. The optical pattern 310 may have a convex lens shape so as to function similarly to a convex lens. In the case of using only the convex lens-shaped optical pattern 310 without using the transparent resin TRS, there may occur a disadvantage that the core portion is visually recognized due to the luminance drop of the core portion. However, Since the light is emitted by scattering, the above disadvantages can be solved. Accordingly, the fifth embodiment according to the present invention has an advantage that it can effectively reduce the perception level.

Here, since the pixel image adjacent to the transparent resin TRS is enlarged and provided to the user by the optical pattern 310, a difference in brightness may occur, which may cause a problem. In this case, however, the fifth embodiment of the present invention can compensate the above problem because a certain amount of light can be maintained in the core portion by processing the core portion using transparent resin (TRS) and particles. Accordingly, it is possible to provide a tiling display device that effectively reduces the perception level.

The cover window 300 may be formed as a single layer as shown in FIG. 8A and may be formed as multiple layers as shown in FIG. 8B. For example, the cover window 300 may comprise a single layer or multiple layers of glass, plastic, or film. However, the present invention is not limited thereto.

8B, the cover window 300 includes a base substrate BL and hard coating layers HL1 and HL2 formed on upper and lower surfaces of the base substrate BL, respectively, ). The base material (BL) may be at least one selected from the group consisting of polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polycarbonate, polyethersulfone (PES), polyarylate, polysulfone, ciclic- And the like. The hard coat layers HL1 and HL2 are provided so as to cover the base substrate BL and can function to protect the surface of the base substrate BL.

The optical pattern 310 may be formed on the upper surface or the lower surface of the cover window 300 and may be formed on both the upper surface and the lower surface. The optical pattern 310 may be formed on the upper hard coat layer HL1 or the lower hard coat layer HL2 and the upper and lower hard coat layers HL1 and HL2 may be formed on the cover window 300. [ , HL2). The optical pattern 310 may be formed using a method such as injection molding, polishing, or the like.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Therefore, the technical scope of the present invention 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 TRS: Transparent resin
PT: Particle BS: Light blocking material
300: cover window 310: optical pattern

Claims (11)

(n is an integer of 2 or more) display modules are arranged side by side to form a screen,
A transparent resin disposed between adjacent display modules; And
And a particle dispersed in the transparent resin and scattering light.
The method according to claim 1,
The content of the particles is,
Lt; RTI ID = 0.0 &gt; 1wt% &lt; / RTI &gt; to 5wt%.
The method according to claim 1,
Wherein the display module comprises a plurality of pixels,
The width of the transparent resin in one direction is,
And a width in the one direction of the pixel adjacent to the transparent resin.
The method according to claim 1,
Wherein the display module includes a display portion for displaying an image and a non-display portion outside the display portion,
And the non-display portion adjacent to the transparent resin,
A tiling display comprising particles scattering light.
The method according to claim 1,
And a light blocking material disposed at a lower end of the transparent resin.
The method according to claim 1,
And a cover window disposed on the display modules.
The method according to claim 6,
The cover window
And an optical pattern provided at a position corresponding to the transparent resin and changing the path of the provided light.
8. The method of claim 7,
In the optical pattern,
A tilting display device having a convex lens shape.
8. The method of claim 7,
Wherein the display module comprises a plurality of pixels,
In the optical pattern,
And enlarges and provides the pixel image adjacent to the transparent resin.
8. The method of claim 7,
The cover window
A base substrate;
An upper hard coating layer disposed on the base substrate; And
And a lower hard coating layer disposed below the base substrate,
In the optical pattern,
Wherein the upper hard coating layer and the lower hard coating layer are formed on at least one of the upper hard coating layer and the lower hard coating layer.
The method according to claim 1,
The particles
A tiling display device coated with a metal material.

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