Splicing display device

Abstract

A spliced ​​display device is provided, comprising: a plurality of display devices, each display device having a display panel including a plurality of pixels and a support plate disposed below the display panel; a lower cover including an alignment hole and coupled to the lower portion of the support plate of each of the plurality of display devices; and a first coupling member including a base fixed to the support plate and a first coupling portion protruding from the base and passing through the alignment hole. The diameter of the first coupling portion is smaller than the diameter of the alignment hole.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to and the benefit of Korean Patent Application No. 10-2020-0047920, filed on April 21, 2020, which is hereby incorporated by reference for all purposes as if fully set forth herein. Technical Field

[0003] The invention relates to a splicing display device. Background Art

[0004] With the development of the information society, the requirements for display devices for displaying images have increased in various forms. For example, display devices are applied to various electrical appliances, such as smart phones, digital cameras, notebook computers, navigators, and smart TVs. The display device may be a flat panel display device, such as a liquid crystal display device, a field emission display device, or a light-emitting display device. Because the light-emitting display device among the flat panel display devices includes a light-emitting element in which each pixel in the display panel emits light itself, it can display images without a backlight unit providing light to the display panel.

[0005] When a display device is manufactured in a large size, the defect rate of the light-emitting element may increase due to the increase in the number of pixels, and the productivity or reliability may deteriorate. In order to solve the above problems, a spliced ​​display device can realize a large-sized screen by connecting multiple display devices with relatively small sizes. Due to the non-display area or frame area of ​​each of the multiple display devices adjacent to each other, the spliced ​​display device may include a boundary portion called a seam between the multiple display devices. When a single image is displayed on the entire screen, the boundary portion between the multiple display devices gives a sense of disconnection on the entire screen, thereby reducing the immersion of the image.

[0006] The above information disclosed in this Background section is only for understanding the background of the present inventive concept and therefore it may contain information that does not constitute prior art. Summary of the invention

[0007] Example embodiments provide a tiled display device capable of eliminating a sense of disconnection between a plurality of display devices and improving a sense of immersion of an image by preventing a boundary portion or a non-display area between the plurality of display devices from being visually recognized.

[0008] Additional features of the inventive concept will be set forth in the description which follows, and in part will be apparent from the description, or may be learned by practice of the inventive concept.

[0009] According to an embodiment of the inventive concept, a spliced ​​display device includes: a plurality of display devices, each including a display panel having a plurality of pixels and a support plate disposed below the display panel; a lower cover including an alignment hole and coupled to a lower portion of the support plate of each of the plurality of display devices; and a first coupling member including a first base fixed to the support plate and a first coupling portion protruding from the first base and passing through the alignment hole. The diameter of the first coupling portion is smaller than the diameter of the alignment hole.

[0010] The alignment hole surrounds the first coupling portion so as to be spaced apart from the first coupling portion in a plane.

[0011] The spliced ​​display device may further include a second coupling member disposed on a lower surface of the lower cover and coupled to the first coupling portion to fix the plurality of display devices to the lower cover.

[0012] The alignment hole may be surrounded by an outer surface of the first coupling portion, a lower surface of the support plate, an inner surface of the lower cover surrounding the alignment hole, and an upper surface of the second coupling portion of the second coupling member coupled with the first coupling portion.

[0013] The second coupling member may include a second base portion disposed under the lower cover, and a second coupling portion protruding from the second base portion to be coupled with the first coupling portion and closely contact a lower surface of the lower cover.

[0014] The first coupling portion may be a male screw, and the second coupling portion may be a female screw screwed to the first coupling portion.

[0015] The height of the first coupling portion may be equal to or less than the sum of the height of the alignment hole and the height of the second coupling portion.

[0016] The outer diameter of the second coupling portion may be greater than the diameter of the alignment hole.

[0017] Each of the plurality of display devices may further include a panel lower member disposed between the display panel and the support plate.

[0018] The panel lower member may include at least one of a heat dissipation layer configured to dissipate heat from the display panel, an electromagnetic wave blocking layer configured to block electromagnetic waves, a light blocking layer configured to block light, and a buffer layer configured to absorb impact.

[0019] Each of the plurality of display devices may further include: a connection pad on a side surface of the display panel, and a flexible film disposed on one surface of the connection pad.

[0020] Each of the plurality of display devices may further include: a source driver disposed on one surface of the flexible film; and a source circuit board electrically connected to the flexible film and disposed under the display panel.

[0021] The support plate may be disposed under the center of the display panel, and the source circuit board may be disposed under the outer side of the display panel.

[0022] The lower cover may include: a flat portion connected to the support plate to support the support plate; a first protrusion protruding from the flat portion in the opposite direction of the display panel and overlapping with a flexible film provided at the outermost side of the plurality of display devices; a side portion bent from the first protrusion to surround the outer surfaces of the plurality of display devices; and a second protrusion protruding from the flat portion in the same direction as the first protrusion and overlapping with the flexible film between the plurality of display devices.

[0023] The display panel may further include connection lines electrically connected to the plurality of pixels and electrically connected to the flexible film through the connection pads.

[0024] According to an embodiment of the inventive concept, a spliced ​​display device includes: a plurality of display devices, each including a display panel having a plurality of pixels and a support plate disposed below the display panel; a plurality of lower covers corresponding to each of the plurality of display devices, including an alignment hole and coupled to the lower portion of the support plate of each of the plurality of display devices; a first coupling member including a base fixed to the support plate and a first coupling portion protruding from the base and passing through the alignment hole; and an auxiliary plate disposed on one surface of the plurality of lower covers to couple the plurality of lower covers. The diameter of the first coupling portion is smaller than the diameter of the alignment hole.

[0025] The spliced ​​display device may further include a second coupling member disposed on a lower surface of the lower cover and coupled to the first coupling portion to fix each of the plurality of display devices to each of the plurality of lower covers.

[0026] The second coupling member includes a second coupling portion coupled to the first coupling portion, and an outer diameter of the second coupling portion may be greater than a diameter of the alignment hole.

[0027] Each of the plurality of lower covers may include: a flat portion connected to the support plate to support the support plate; a first protrusion protruding from one side of the flat portion in the opposite direction of the display panel; and a second protrusion protruding from the other side of the flat portion in the opposite direction of the display panel.

[0028] Each of the plurality of lower covers disposed at the outermost side may further include a side portion bent from the first protrusion to surround outer surfaces of the plurality of display devices.

[0029] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory and are intended to provide further explanation of the invention as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The accompanying drawings, which are included to provide a further understanding of the present invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the present invention and are used to explain the inventive concept together with the description. By describing the embodiments of the present invention in detail with reference to the accompanying drawings, the above and other aspects and features of the present invention will become more apparent.

[0031] Figure 1 is a plan view showing a spliced ​​display device according to an embodiment.

[0032] Figure 2 is a perspective view showing a spliced ​​display device according to an embodiment.

[0033] Figure 3 is along Figure 2 A cross-sectional view taken along line II'.

[0034] Figure 4 is an exploded perspective view showing a plurality of display devices and a lower cover of a spliced ​​display device according to an embodiment.

[0035] Figure 5 is a plan view showing the structure of a spliced ​​display device according to an embodiment.

[0036] Figure 6 is along Figure 5 A cross-sectional view taken along line II-II'.

[0037] Figure 7 yes Figure 6 Magnified view of area A1.

[0038] Figure 8 yes Figure 6 Magnified view of area A2.

[0039] Fig. 9 is a perspective view showing a first coupling member and a second coupling member of a spliced ​​display device according to an embodiment.

[0040] Fig.10 is a flow chart showing a process of manufacturing a spliced ​​display device according to an embodiment.

[0041] Fig.11 is a plan view showing the structure of a spliced ​​display device according to another embodiment.

[0042] Fig.12 is a cross-sectional view showing a spliced ​​display device according to another embodiment. DETAILED DESCRIPTION

[0043] In the following description, for the purpose of explanation, many specific details are set forth in order to provide a thorough understanding of various embodiments or implementations of the present invention. As used herein, "embodiment" and "implementation" are interchangeable words, which are non-limiting examples of devices or methods using one or more of the present inventions disclosed herein. However, it is apparent that various embodiments can be practiced without these specific details or in the case of one or more equivalent arrangements. In other examples, known structures and devices are shown in block diagram form to avoid making various embodiments obscure unnecessarily. In addition, various embodiments may be different, but do not have to be exclusive. For example, without departing from the present invention, the specific shape, configuration and characteristics of the embodiment may be used or implemented in another embodiment.

[0044] Unless otherwise specified, the embodiments shown will be understood as providing exemplary features of varying details of some ways in which the inventive concept can be implemented in practice. Therefore, unless otherwise specified, the features, components, modules, layers, films, panels, regions and / or aspects of the various embodiments (hereinafter individually or collectively referred to as "elements") may be combined, separated, interchanged and / or rearranged in other ways without departing from the inventive concept.

[0045] The use of cross hatching and / or shading in the drawings is generally provided to clarify the boundaries between adjacent elements. Thus, unless otherwise specified, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for a specific material, material properties, size, ratio, commonality between the elements shown, and / or any other characteristics, attributes, properties, etc. of the elements. In addition, in the drawings, the size and relative size of the elements may be exaggerated for clarity and / or descriptive purposes. When the embodiments may be implemented differently, a specific processing sequence may be performed differently from the described sequence. For example, two consecutively described processes may be performed substantially simultaneously or in an order opposite to the described sequence. In addition, similar reference numerals represent similar elements.

[0046] When an element such as a layer is referred to as being "on", "connected to" or "coupled to" another element or layer, it may be directly on, directly connected to or directly coupled to another element or layer, or there may be an intermediate element or layer. However, when an element or layer is referred to as being "directly" "on", "directly connected to" or "directly coupled to" another element or layer, there is no intermediate element or layer. For this purpose, the term "connection" may refer to a physical, electrical and / or fluid connection with or without an intermediate element. In addition, the D1 axis, the D2 axis, and the D3 axis are not limited to the three axes of a rectangular coordinate system, such as an x-axis, a y-axis, and a z-axis, and may be interpreted in a broader sense. For example, the D1 axis, the D2 axis, and the D3 axis may be perpendicular to each other, or may represent different directions that are not perpendicular to each other. For the purpose of this disclosure, "at least one of X, Y, and Z" and "at least one selected from the group consisting of X, Y, and Z" may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as, for example, XYZ, XYY, YZ, and ZZ. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0047] Although the terms "first", "second", etc. may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another element. Therefore, without departing from the teachings of the present disclosure, the first element discussed below may be referred to as the second element.

[0048] Spatially relative terms, such as "below," "below," "below," "above," "upper," "above," "higher," and "side" (e.g., as in "sidewall"), etc., may be used herein for descriptive purposes and thereby describe the relationship of one element to another (or multiple) elements as shown in the accompanying drawings. In addition to the orientations depicted in the accompanying drawings, the spatially relative terms are also intended to cover different orientations of the device in use, operation, and / or manufacture. For example, if the device in the accompanying drawings is turned over, elements described as being "below" or "beneath" other elements or features will be oriented as being "above" the other elements or features. Thus, the exemplary term "below" can cover both the above and below orientations. In addition, the device can be oriented in other ways (e.g., rotated 90 degrees or in other orientations), and as such, the spatially relative descriptors used herein are interpreted accordingly.

[0049] The technical terms used herein are for the purpose of describing specific embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "a", "an" and "the" as used herein are intended to also include the plural forms. In addition, the terms "comprise", "comprising", "include" and / or "including" when used in this specification indicate the presence of the features, integers, steps, operations, elements, components and / or groups thereof, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should also be noted that, as used herein, the terms "substantially", "about" and other similar terms are used as approximate terms, and are not used as terms of degree, and as such, are used to explain the inherent deviations of the values ​​measured, calculated and / or provided as recognized by those of ordinary skill in the art.

[0050] Various embodiments are described herein with reference to cross-sectional illustrations and / or exploded illustrations that are schematic illustrations of idealized embodiments and / or intermediate structures. As such, variations from the shapes of the illustrations due to, for example, manufacturing techniques and / or tolerances are to be expected. Thus, the embodiments disclosed herein should not necessarily be construed as limited to the particular illustrated shapes of the regions, but rather include deviations in shapes that result from, for example, manufacturing. In this manner, the regions illustrated in the drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of the regions of the device, and as such, are not necessarily intended to be limiting.

[0051] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present disclosure belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art, and should not be interpreted in an ideal or overly rigid sense unless explicitly defined as such herein.

[0052] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

[0053] Figure 1 1 is a plan view showing a spliced ​​display device TD according to an embodiment.

[0054] Reference Figure 1, the spliced ​​display device TD may include a plurality of display devices 10. The plurality of display devices 10 may be arranged in a grid shape, but the present invention is not limited thereto. The plurality of display devices 10 may be connected in a first direction (X-axis direction) or a second direction (Y-axis direction), and the spliced ​​display device TD may have a specific shape. For example, each of the plurality of display devices 10 may have the same size as each other, but the present invention is not limited thereto. For another example, the plurality of display devices 10 may have different sizes from each other.

[0055] Each of the plurality of display devices 10 may have a rectangular shape including a long side and a short side. The plurality of display devices 10 may be arranged to have long sides or short sides connected to each other. Some display devices 10 may be arranged on the edge of the spliced ​​display device TD to form one side of the spliced ​​display device TD. Some other display devices 10 may be arranged at the corners of the spliced ​​display device TD to form two adjacent sides of the spliced ​​display device TD. Another display device 10 may be arranged inside the spliced ​​display device TD to be surrounded by other display devices 10.

[0056] Each of the plurality of display devices 10 may include a display area DA and a non-display area NDA. The display area DA may include a plurality of pixels to display an image. The non-display area NDA may be arranged around the display area DA to surround the display area DA and may not display an image. Each of the plurality of display devices 10 may be configured to display a portion of a composite image or a single image related to a single display device 10.

[0057] The spliced ​​display device TD may have a planar shape as a whole, but the present invention is not limited thereto. The spliced ​​display device TD may have a three-dimensional shape, thereby providing a three-dimensional effect to the user. For example, when the spliced ​​display device TD has a three-dimensional shape, at least some of the plurality of display devices 10 may have a curved shape. For another example, the plurality of display devices 10 each have a planar shape and have a plurality of regions connected to each other at a predetermined angle, so that the spliced ​​display device TD may have a three-dimensional shape.

[0058] A spliced ​​display device TD may be formed by connecting non-display areas NDA of adjacent display devices 10. A plurality of display devices 10 may be connected to each other by a connecting member or an adhesive member. Accordingly, the non-display area NDA between the plurality of display devices 10 may be surrounded by the adjacent display area DA. The distance between the display areas DA of the plurality of display devices 10 may be close to the extent that the non-display area NDA between the plurality of display devices 10 or the boundary between the plurality of display devices 10 may not be visually recognized by the user. In addition, the external light reflectivity of the display area DA of each of the plurality of display devices 10 may be substantially the same as the external light reflectivity of the non-display area NDA between the plurality of display devices 10. Accordingly, the spliced ​​display device TD may eliminate the sense of disconnection between the plurality of display devices 10 by preventing the boundary or the non-display area NDA between the plurality of display devices 10 from being visually recognized, and improve the immersion of the image.

[0059] Figure 2 is a perspective view showing a spliced ​​display device TD according to an embodiment, and Figure 3 is along Figure 2 A cross-sectional view taken along line II'.

[0060] Reference Figure 2 and Figure 3 The display device 10 includes a display panel 100 , a plurality of source flexible films 210 , a plurality of source drivers 220 , a source circuit board 230 , a plurality of gate flexible films 212 , and a plurality of gate drivers 222 .

[0061] The display panel 100 may include a backlight unit BLU, a first substrate 110 , a liquid crystal layer 120 , a second substrate 130 , a sealing member SL, and a dummy pattern DP.

[0062] For example, each of the backlight unit BLU, the first substrate 110, and the second substrate 130 may have a rectangular shape having a long side in a first direction (X-axis direction) and a short side in a second direction (Y-axis direction) crossing the first direction (X-axis direction). For another example, the backlight unit BLU, the first substrate 110, and the second substrate 130 may have curved portions in some areas.

[0063] The backlight unit BLU may supply light to the first substrate 110, the liquid crystal layer 120, and the second substrate 130. The display device 10 may display an image using the light supplied from the backlight unit BLU. For example, the backlight unit BLU may be an edge type backlight unit or a direct type backlight unit, but is not limited thereto.

[0064] The first substrate 110 may include a display area DA and a non-display area NDA.

[0065] The display area DA, as an area configured to display an image, may be defined as a central area of ​​the first substrate 110. The display area DA may include a plurality of pixels formed for each pixel area crossed by a plurality of data lines and a plurality of gate lines. Each of the plurality of pixels may be connected to at least one gate line and at least one data line. Each of the plurality of pixels may be defined as an area of ​​a minimum unit of output light.

[0066] The non-display area NDA may be defined as an area other than the display area DA in the first substrate 110. For example, the non-display area NDA may include a sealing member SL attaching the first substrate 110 and the second substrate 130, a connection pad 113 disposed on a side surface of the display panel 100, a dummy pattern DP disposed between the connection pad 113 and the sealing member SL, and a source flexible film 210 electrically connected to the connection pad 113.

[0067] The first substrate 110 may further include a connection line 111. The connection line 111 may be disposed on the first substrate 110 at an outer portion of the display panel 100. The connection line 111 may be electrically connected to a connection pad 113 disposed on a side surface of the display panel 100, and may be connected to a plurality of data lines or a plurality of gate lines. The connection line 111 may be connected to a plurality of pixels through a plurality of data lines or a plurality of gate lines. The connection line 111 may supply a data voltage to a plurality of data lines, or may supply a gate signal to a plurality of gate lines. For example, the connection line 111 may be formed of the same material on the same layer as the gate electrode of the thin film transistor of the first substrate 110, but the present invention is not limited thereto. For another example, the connection line 111 may be formed of the same material on the same layer as the source electrode or the drain electrode of the thin film transistor.

[0068] The liquid crystal layer 120 may be disposed between the first substrate 110 and the second substrate 130. For example, the liquid crystal layer 120 may be disposed between the pixel electrode of the first substrate 110 and the common electrode of the second substrate 130. The arrangement of crystal molecules in the liquid crystal layer 120 is changed according to the voltage difference between the pixel electrode of the first substrate 110 and the common electrode of the second substrate 130, thereby changing the transmittance of light passing through the liquid crystal layer 120.

[0069] The second substrate 130 may be attached to the first substrate 110 with the liquid crystal layer 120 interposed therebetween. The common electrode of the second substrate 130 may face the pixel electrode of the first substrate 110. For example, the first substrate 110 and the second substrate 130 may be attached by a sealing member SL provided along the edge of the display area DA. The sealing member SL may seal the liquid crystal layer 120, thereby preventing crystal molecules in the liquid crystal layer 120 from leaking to the outside of the display area DA.

[0070] The sealing member SL may be disposed between the edge of the first substrate 110 and the edge of the second substrate 130 in the non-display area NDA. The sealing member SL may be disposed along the edge of the first substrate 110 and the second substrate 130 in the non-display area NDA to seal the liquid crystal layer 120. The first substrate 110 and the second substrate 130 may be coupled to each other by the sealing member SL. For example, the sealing member SL may include an organic material. The sealing member SL may be made of epoxy resin, but the material thereof is not limited thereto. The connecting line 111 may be disposed between the sealing member SL and the first substrate 110.

[0071] The dummy pattern DP may be interposed between the edge of the first substrate 110 and the edge of the second substrate 130. For example, the dummy pattern DP may be disposed between the structure on the second substrate 130 and the connection line 111. The dummy pattern DP may be electrically floating, but the present invention is not limited thereto.

[0072] The display panel 100 may further include connection pads 113 disposed on the side surfaces of the first and second substrates 110 and 130 and the dummy pattern DP. The connection pads 113 may extend from the side surface of the first substrate 110 to the side surface of the second substrate 130. The connection pads 113 may receive various voltages or signals from the plurality of source flexible films 210 and may supply the corresponding voltages or signals to the connection lines 111.

[0073] The adhesive film 140 may attach the plurality of source flexible films 210 to one surface of the connection pad 113. One surface of the adhesive film 140 may be attached to one surface of the connection pad 113, and the other surface of the adhesive film 140 may be attached to the first contact pads CP1 of the plurality of source flexible films 210. For example, the adhesive film 140 may cover the entire connection pad 113, but the present invention is not limited thereto. For another example, the adhesive film 140 may cover a portion of the connection pad 113 and expose the rest of the connection pad 113 to the external environment.

[0074] The adhesive film 140 may include an anisotropic conductive film (ACF). When the adhesive film 140 includes the ACF, the adhesive film 140 may have conductivity in a region where the connection pad 113 contacts the first contact pads CP1 of the plurality of source flexible films 210, and may electrically connect the plurality of source flexible films 210 to the connection pad 113.

[0075] For example, the display device 10 may further include a cover window (not shown) disposed on the second substrate 130 to protect the display panel 100 and transmit an image to the outside.

[0076] A plurality of source flexible films 210 may be disposed on the side surface of the display panel 100. The source flexible film 210 may extend from the side surface of the display panel 100 to the lower surface of the display panel 100. For example, the source flexible film 210 may be disposed on the side surfaces of the first substrate 110 and the second substrate 130 by side bonding. The first contact pads CP1 of the source flexible film 210 may be electrically connected to the connection lines 111 of the first substrate 110 on the side surface of the first substrate 110, and the connection lines 111 may be electrically connected to the third contact pads CP3 of the source circuit board 230 on the lower surface of the first substrate 110 through the second contact pads CP2 of the source flexible film 210. For example, the source flexible film 210 may be an anisotropic conductive film (ACF) and may transmit a signal from the source driver 220 or the source circuit board 230 to the first substrate 110 through the connection lines 111.

[0077] Each of the plurality of source drivers 220 may be disposed on one surface of each of the plurality of source flexible films 210. For example, the source driver 220 may be an integrated circuit (IC). The source driver 220 may convert digital video data into an analog data voltage based on a source control signal of a timing controller, and may supply the analog data voltage to a data line of the first substrate 110 through the source flexible film 210, via the first contact pad CP1, the adhesive film 140, the connection pad 113, and the connection line 111.

[0078] The source circuit board 230 can be connected to a plurality of source drivers 220 or the first substrate 110 by means of a plurality of source flexible films 210 through the connections shown and described herein. The source circuit board 230 can be connected to a control circuit board or a timing controller through a plurality of cables. For example, the source circuit board 230 can be a flexible printed circuit board or a printed circuit board.

[0079] The plurality of gate flexible films 212 may be disposed on another side surface, such as a vertical side surface of the display panel 100 adjacent to the side of the display panel 100 on which the plurality of source flexible films 210 are disposed. For example, the gate flexible film 212 may be attached to the other side of the display panel 100 by a tape carrier package (TCP) method.

[0080] Each of the plurality of gate drivers 222 may be disposed on the gate flexible film 212. The gate driver 222 may receive a gate control signal from the timing controller. The gate driver 222 may generate a gate signal based on the gate control signal. The gate driver 222 may sequentially supply the gate signal to a plurality of pixels through a plurality of gate lines.

[0081] Figure 4is an exploded perspective view showing a plurality of display devices 10 and a lower cover 20 of a spliced ​​display device TD according to an embodiment, and Figure 5 1 is a plan view showing the structure of a spliced ​​display device TD according to the embodiment.

[0082] Reference Figure 4 and Figure 5 The spliced ​​display device TD may include a first display device 10-1, a second display device 10-2, a third display device 10-3 and a fourth display device 10-4, but the number of display devices 10 is not limited to Figure 4 and Figure 5 The number of the display devices 10 may be determined according to the size of each of the display device 10 and the spliced ​​display device TD.

[0083] The first display device 10-1, the second display device 10-2, the third display device 10-3 and the fourth display device 10-4 may be arranged in a lattice shape, and their side surfaces may contact each other to form a spliced ​​display device TD. The first display device 10-1, the second display device 10-2, the third display device 10-3 and the fourth display device 10-4 may be arranged adjacent to each other to display one or more merged images. The display area DA of each of the first display device 10-1, the second display device 10-2, the third display device 10-3 and the fourth display device 10-4 is part of the spliced ​​display device TD, and may display an image of a corresponding area in an image displayed by the spliced ​​display device TD. The spliced ​​display device TD may include a plurality of display devices 10 to increase the size of the spliced ​​display device TD while displaying one or more high-quality images.

[0084] Each of the first, second, third, and fourth display devices 10-1, 10-2, 10-3, and 10-4 may include a plurality of pixels SP arranged along a plurality of rows and a plurality of columns in a display area DA. Each of the plurality of pixels SP may emit light having a predetermined peak wavelength through a light emitting area.

[0085] Each of the first display device 10-1 and the second display device 10-2 may include a source flexible film 210 between the first display device 10-1 and the second display device 10-2. For example, each of the first display device 10-1 and the second display device 10-2 may include a connection pad 113 and an adhesive film 140 between the first display device 10-1 and the second display device 10-2. The thickness of the source flexible film 210, the adhesive film 140, and the connection pad 113 between the first display device 10-1 and the second display device 10-2 may determine a gap GAP between a display area DA of the first display device 10-1 and a display area DA of the second display device 10-2. The gap GAP between the display area DA of the first display device 10-1 and the display area DA of the second display device 10-2 may be close to the extent that a user cannot recognize a non-display area NDA between the first display device 10-1 and the second display device 10-2 or a boundary portion between the first display device 10-1 and the second display device 10-2.

[0086] The distance between the outermost pixels SP of each of the adjacent display devices 10 may be substantially the same as the pitch between the adjacent pixels SP in one display device 10. Here, the pitch may be defined as the distance between the centers of the adjacent pixels SP. For example, the distance between the pixel SP disposed at the outermost portion of the lower portion of the first display device 10-1 and the pixel SP disposed at the outermost portion of the upper portion of the second display device 10-2 may be substantially the same as the pitch between the adjacent pixels SP in the first display device 10-1. Therefore, in the spliced ​​display device TD, the boundary portion or non-display area NDA between the plurality of display devices 10 may be prevented from being recognized, and the sense of disconnection between the plurality of display devices 10 may be eliminated.

[0087] Among the plurality of pixels SP, the distance between the center of the pixel SP disposed at the outermost side of the display device 10 and the outer side of the source flexible film 210 may be less than half of the pitch of the adjacent pixels SP. For example, the distance between the pixel SP disposed at the lower outermost side of the first display device 10-1 and the source flexible film 210 disposed at the lower side of the first display device 10-1 may be less than half of the distance between the pixel SP disposed at the lower outermost side of the first display device 10-1 and the pixel SP disposed at the upper outermost side of the second display device 10-2. Therefore, since the distance between the outermost pixel SP and the source flexible film 210 is half of the distance between the pixels SP, the pixels SP in the adjacent display devices 10 may appear to be adjacent pixels. Therefore, in the spliced ​​display device TD, the boundary portion or non-display area NDA between the plurality of display devices 10 may be prevented from being recognized, and the sense of disconnection between the plurality of display devices 10 may be eliminated.

[0088] The lower cover 20 may include a plurality of alignment holes AH, and may be coupled to the lower portion of the display panel 100 of each of the plurality of display devices 10. The lower cover 20 may be disposed below the spliced ​​display device TD to cover the lower surface of the spliced ​​display device TD and protect the lower surfaces of the plurality of display devices 10. The lower cover 20 may be coupled to the plurality of display devices 10 by a coupling member passing through the plurality of alignment holes AH, and may fix and support the plurality of display devices 10. For example, the lower cover 20 may be a plate-shaped member covering the entire rear surface of the spliced ​​display device TD. The corners of the lower cover 20 may be formed at right angles, or may be formed to be rounded to have a predetermined curvature.

[0089] The lower cover 20 may include a metal material or a plastic material. For example, the lower cover 20 may include at least one of stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium (Mg)-lithium (Li) alloy, aluminum (Al) alloy, and polycarbonate (PC), but the material is not limited thereto.

[0090] Figure 6 is along Figure 5 A cross-sectional view taken along line II-II', Figure 7 yes Figure 6 A magnified view of area A1, Figure 8 yes Figure 6 A magnified view of area A2, and Fig. 9 2 is a perspective view showing a first coupling member 510 and a second coupling member 520 of a spliced ​​display device TD according to an embodiment.

[0091] Reference Figures 6 to 9 The spliced ​​display device TD may include a plurality of display devices 10 , a lower cover 20 , and a coupling member 500 coupling the plurality of display devices 10 and the lower cover 20 .

[0092] Each of the plurality of display devices 10 may include a display panel 100 , a panel lower member 300 , a support plate 400 , a plurality of source flexible films 210 , a plurality of source drivers 220 , and a source circuit board 230 .

[0093] The display panel 100 may include a plurality of pixels SP configured to display one or more images. For example, the display panel 100 may be a liquid crystal display panel including a first substrate 110, a liquid crystal layer 120, and a second substrate 130, but is not limited thereto. For another example, the display panel 100 may be a light-emitting display panel including at least one of an organic light-emitting diode, a quantum dot light-emitting diode, a micro light-emitting diode based on an inorganic material (e.g., a micro LED), and a nano light-emitting diode based on an inorganic material (e.g., a nano LED). The display panel 100 of each of the plurality of display devices 10 may be a part of a spliced ​​display device TD, and may display one or more images of corresponding areas in one or more images displayed from the spliced ​​display device TD. The spliced ​​display device TD may include a plurality of display devices 10 to increase the size of the spliced ​​display device TD while displaying one or more high-quality images.

[0094] The panel lower member 300 may be disposed on the lower surface of the display panel 100. The panel lower member 300 may include at least one of the following: a heat dissipation layer configured to effectively dissipate heat from the display panel 100, an electromagnetic wave blocking layer configured to block electromagnetic waves, a light blocking layer configured to block light incident from the outside, and a buffer layer configured to absorb external impact. For example, the panel lower member 300 may include graphite to have flexibility and perform a heat dissipation function for the display panel 100.

[0095] The support plate 400 may be disposed on the lower surface of the panel lower member 300. The support plate 400 may support the display panel 100 coupled to the panel lower member 300. The support plate 400 may have a stronger rigidity than the display panel 100 and the panel lower member 300. The support plate 400 may be disposed below the center of the display panel 100 and may overlap with most areas of the display panel 100. The support plate 400 may be coupled to the flat portion 21 of the lower cover 20 by a coupling member 500. For example, the support plate 400 may include at least one of stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium (Mg)-lithium (Li) alloy, aluminum (Al) alloy, and polycarbonate (PC), but the material thereof is not limited thereto.

[0096] The support plate 400 may be attached to the lower surface of the panel lower member 300 by a first adhesive member 410. The first adhesive member 410 may be a double-sided tape or an adhesive film having excellent adhesiveness. For example, the first adhesive member 410 may include at least one of an optically clear adhesive (OCA), an optically clear resin (OCR), and a pressure sensitive adhesive (PSA), but is not limited thereto.

[0097] The support plate 400 may fix the first coupling member 510. The first coupling member 510 may be fixed by inserting the first base 511 of the first coupling member 510 into the support plate 400. For example, one surface of the first base 511 of the first coupling member 510 may be provided to be horizontal with the upper surface of the support plate 400. For another example, one surface of the first base 511 of the first coupling member 510 may be inserted until the inside of the support plate 400 and contact the panel lower member 300. The first base 511 of the first coupling member 510 may pass through the support plate 400, and the first coupling portion 512 of the first coupling member 510 may protrude from the lower surface of the support plate 400.

[0098] A plurality of source flexible films 210 may be disposed on the side surface of the display panel 100. The source flexible film 210 may extend from the side surface of the display panel 100 to the lower surface of the display panel 100. For example, the source flexible film 210 may be disposed on the side surface of the first substrate 110 and the second substrate 130 by side bonding. The source flexible film 210 disposed at the outermost side of the spliced ​​display device TD may face the side surface portion 23 of the lower cover 20, and the source flexible film 210 not disposed at the outermost side of the spliced ​​display device TD may face the source flexible film 210 of another adjacent display device 10.

[0099] Each of the plurality of source drivers 220 may be disposed on one surface of each of the plurality of source flexible films 210. As noted herein, the source driver 220 may be an integrated circuit (IC). The source driver 220 may convert digital video data into an analog data voltage based on a source control signal of a timing controller, and may supply the analog data voltage to a data line of the first substrate 110 through the source flexible film 210.

[0100] The source circuit board 230 may be disposed on the lower surface of the panel lower member 300. The source circuit board 230 may be disposed below the outer portion of the display panel 100. The source circuit board 230 may be disposed in an area on the lower surface of the panel lower member 300 where the support plate 400 is not disposed, and then the source circuit board 230 may be mounted on the panel lower member 300. The source circuit board 230 may be connected to a plurality of source drivers 220 or the first substrate 110 through a plurality of source flexible films 210. The source circuit board 230 may be connected to a control circuit board or a timing controller through a plurality of cables. For example, the source circuit board 230 may be a flexible printed circuit board or a printed circuit board.

[0101] The source circuit board 230 may be attached to the lower surface of the panel lower member 300 by a second adhesive member 235. The second adhesive member 235 may be a double-sided tape or adhesive film having excellent adhesiveness. For example, the second adhesive member 235 may include at least one of an optically clear adhesive (OCA), an optically clear resin (OCR), and a pressure sensitive adhesive (PSA), but is not limited thereto.

[0102] The lower cover 20 may cover the lower surface and side surfaces of the spliced ​​display device TD. The lower cover 20 may include a plurality of alignment holes AH and may be coupled to the lower portion of the display panel 100 of each of the plurality of display devices 10. The lower cover 20 may be disposed below the display panel 100 and the support plate 400 to cover the lower surface of the spliced ​​display device TD. The lower cover 20 may surround the outermost portion of the spliced ​​display device TD and may protect the outer surface of the spliced ​​display device TD.

[0103] The lower cover 20 may be coupled to the plurality of display devices 10 by means of the first coupling member 510 passing through the plurality of alignment holes AH and the second coupling member 520 corresponding to the first coupling member 510, and may fix and support the plurality of display devices 10. For example, the lower cover 20 may be a plate-shaped member covering the entire rear surface of the spliced ​​display device TD. The corners of the lower cover 20 may be formed at right angles, or may be formed to be rounded to have a predetermined curvature.

[0104] The lower cover 20 may include a flat portion 21 , a first protrusion 22 , a side portion 23 , and a second protrusion 24 .

[0105] The flat portion 21 of the lower cover 20 may be disposed on the lower surface of the support plate 400 to be coupled with the support plate 400 through the coupling member 500. The flat portion 21 of the lower cover 20 may be coupled with the support plate 400 of each of the plurality of display devices 10 to fix and support the plurality of display devices 10. The flat portion 21 of the lower cover 20 may include a plurality of alignment holes AH.

[0106] The alignment hole AH of the flat portion 21 may be interposed between the support plate 400 and the second coupling member 520. The first coupling portion 512 of the first coupling member 510 inserted into the support plate 400 may pass through the alignment hole AH to protrude up to the lower portion of the flat portion 21, and the second coupling portion 522 of the second coupling member 520 may be coupled to the protruding first coupling portion 512. For example, the first coupling portion 512 may be a male screw, and the second coupling portion 522 may be a female screw screwed to the first coupling portion 512, but the present invention is not limited thereto.

[0107] The diameter of the alignment hole AH may be larger than the diameter of the first coupling portion 512. The alignment hole AH may surround the first coupling portion 512 on a plane to be spaced apart from the first coupling portion 512. For example, the support plate 400 with the first coupling member 510 inserted therein may be mounted on the lower cover 20, and the first coupling portion 512 may pass through the alignment hole AH of the flat portion 21. After the plurality of display devices 10 are mounted on the lower cover 20, the plurality of display devices 10 may be aligned so that the side surfaces thereof are in close contact with each other. Because the diameter of the alignment hole AH is larger than the diameter of the first coupling portion 512, the first coupling portion 512 may be finely moved within the alignment hole AH in the process of finely adjusting the positions of the plurality of display devices 10. The diameter difference between the alignment hole AH and the first coupling portion 512 may be designed so that the first coupling portion 512 may be freely moved within the alignment hole AH in the process of aligning the plurality of display devices 10.

[0108] When the alignment of the plurality of display devices 10 is completed, the second coupling portion 522 of the second coupling member 520 may be coupled to the first coupling portion 512, and the plurality of display devices 10 may be fixed and coupled to the lower cover 20. When the first coupling member 510 and the second coupling member 520 are coupled to each other, a gap may occur between the alignment hole AH and the first coupling portion 512, and the alignment hole AH may be defined by an outer surface of the first coupling portion 512, a lower surface 400a of the support plate 400, an inner surface 20b of the lower cover 20 surrounding the alignment hole AH, and an upper surface 520a of the second coupling portion 522.

[0109] Accordingly, because the spliced ​​display device TD includes an alignment hole AH larger than the diameter of the first coupling portion 512, the plurality of display devices 10 can be easily aligned without a separate alignment equipment, and the assembly tolerance or coupling tolerance between the plurality of display devices 10 can be prevented. For example, because the spliced ​​display device TD includes the first coupling member 510 and the second coupling member 520 and the alignment hole AH, the distance between the plurality of display devices 10-1, 10-2, etc. can be minimized by fully attaching the side surfaces of the plurality of display devices 10 to each other, and the tilt tolerance of the display panel 100 can be minimized. In the spliced ​​display device TD, the scribing tolerance of the display panel 100 can be minimized, and the assembly tolerance occurring in the process of coupling the plurality of display devices 10 to the lower cover 20 can be minimized. As a result, the spliced ​​display device TD can eliminate the sense of disconnection between the plurality of display devices 10 and improve the immersion of the image by preventing the boundary portion or the non-display area NDA between the plurality of display devices 10 from being visually recognized.

[0110] The first protrusion 22 of the lower cover 20 may protrude from the flat portion 21 in the reverse direction of the display panel 100. The first protrusion 22 may protrude in the direction opposite to the third direction (Z-axis direction). The first protrusion 22 may extend from one side of the flat portion 21 to the outside of the display device 10. The first protrusion 22 may overlap with the source flexible film 210 arranged at the outermost side of the plurality of display devices 10. For example, the first protrusion 22 may be spaced apart from the lower surface of the panel lower member 300, and may accommodate a device or other member connected to the source circuit board 230.

[0111] The side portion 23 of the lower cover 20 may be bent from the first protrusion 22 to surround the outer surface of the plurality of display devices 10. The side portion 23 may form a side appearance of the spliced ​​display device TD. When the spliced ​​display device TD further includes a cover window, the side portion 23 may contact an edge of the cover window. The side portion 23 may overlap with the source flexible film 210 disposed at the outermost side of the plurality of display devices 10. For example, the side portion 23 may be attached to the side surface of the source flexible film 210 or the edge of the cover window by an adhesive member. The side portion 23 may cover the entire side surface of the spliced ​​display device TD. As another example, the side portion 23 may be formed integrally with a housing covering the rear surface of the lower cover 20.

[0112] The second protrusion 24 of the lower cover 20 may protrude from the flat portion 21 in the reverse direction of the display panel 100. The second protrusion 24 may protrude in a direction opposite to the third direction (Z-axis direction). The second protrusion 24 may protrude in the same direction as the first protrusion 22. The second protrusion 24 may extend from the other side of the flat portion 21 toward another adjacent display device 10. The second protrusion 24 may overlap with the gap GAP between the plurality of display devices 10. The second protrusion 24 may overlap with the source flexible film 210 disposed between the plurality of display devices 10. For example, the second protrusion 24 may be spaced apart from the lower surface of the panel lower member 300 and may accommodate a device or other member connected to the source circuit board 230.

[0113] The lower cover 20 may include a metal material or a plastic material. For example, the lower cover 20 may include at least one of stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium (Mg)-lithium (Li) alloy, aluminum (Al) alloy, and polycarbonate (PC), but the material is not limited thereto.

[0114] The coupling member 500 may couple the plurality of display devices 10 and the lower cover 20. The coupling member 500 may include a first coupling member 510 and a second coupling member 520 coupled to each other.

[0115] The first coupling member 510 may be fixed to the support plate 400 and may protrude from the support plate 400 to pass through the alignment hole AH of the lower cover 20. The first coupling member 510 may be coupled to the second coupling member 520 disposed on the lower surface 20s of the lower cover 20, thereby fixing and coupling the support plate 400 and the lower cover 20.

[0116] The first coupling member 510 may include a first base 511 and a first coupling portion 512. The first base 511 may be fixed by being inserted into the support plate 400. For example, one surface of the first base 511 of the first coupling member 510 may be provided to be horizontal with the upper surface of the support plate 400. For another example, one surface of the first base 511 of the first coupling member 510 may be inserted until the inside of the support plate 400. The first base 511 of the first coupling member 510 may penetrate the support plate 400, and the first coupling portion 512 of the first coupling member 510 may protrude from the lower surface of the support plate 400.

[0117] The first coupling portion 512 may pass through the alignment hole AH to protrude to the lower portion of the flat portion 21, and may be coupled to the second coupling portion 522 of the second coupling member 520. For example, the first coupling portion 512 and the second coupling portion 522 may include screws corresponding to each other. The first coupling portion 512 may be a male screw, and the second coupling portion 522 may be a female screw screwed to the first coupling portion 512, but the present invention is not limited thereto.

[0118] The diameter of the first coupling portion 512 may be smaller than the diameter of the alignment hole AH. The first coupling portion 512 may be surrounded by the alignment hole AH on a plane. Since the diameter of the first coupling portion 512 may be smaller than the diameter of the alignment hole AH, the first coupling portion 512 may be finely moved within the alignment hole AH in the process of finely adjusting the positions of the plurality of display devices 10.

[0119] When the alignment of the plurality of display devices 10 is completed, the first coupling portion 512 may be coupled with the second coupling portion 522 of the second coupling member 520 , and the plurality of display devices 10 may be fixed and coupled to the lower cover 20 .

[0120] The second coupling member 520 may be disposed on the lower surface 20s of the flat portion 21 of the lower cover 20 and may be coupled to the first coupling member 510 to fix the plurality of display devices 10 to the lower cover 20. The second coupling member 520 may include a second base portion 521 and a second coupling portion 522. The second base portion 521 may be disposed below the flat portion 21 of the lower cover 20 and may support the second coupling portion 522.

[0121] The second coupling portion 522 may be coupled to the first coupling portion 512 until the second coupling portion 522 protrudes from the second base portion 521 and is in close contact with the lower surface 20s of the flat portion 21. For example, the height of the first coupling portion 512 may be equal to or less than the sum of the height of the alignment hole AH and the height of the second coupling portion 522. Accordingly, the second coupling portion 522 may be coupled to the first coupling portion 512 so that the upper surface of the second coupling portion 522 presses the lower surface 20s of the lower cover 20. For example, the first coupling portion 512 and the second coupling portion 522 may include screws corresponding to each other. The first coupling portion 512 may be a male screw, and the second coupling portion 522 may be a female screw screwed to the first coupling portion 512, but the present invention is not limited thereto.

[0122] The outer diameter of the second coupling portion 522 may be greater than the diameter of the alignment hole AH. The second coupling portion 522 may be coupled to the first coupling portion 512 having a diameter smaller than the diameter of the alignment hole AH to press the lower surface 20s of the flat portion 21. Accordingly, the support plate 400 into which the first coupling member 510 is inserted and the lower cover 20 pressed by the second coupling member 520 may be fixed and coupled.

[0123] Fig.10 is a flowchart showing a process of manufacturing a spliced ​​display device TD according to an embodiment.

[0124] Reference Fig.10 The spliced ​​display device TD may include a plurality of display devices 10, a lower cover 20, and a coupling member 500 configured to couple the plurality of display devices 10 and the lower cover 20. Each of the plurality of display devices 10 may include a display panel 100, a panel lower member 300, a support plate 400, a plurality of source flexible films 210, a plurality of source drivers 220, and a source circuit board 230.

[0125] The display panel 100 may be disposed on the upper surface of the panel lower member 300 (operation S110). For example, the panel lower member 300 may include at least one of a heat dissipation layer configured to effectively dissipate heat from the display panel 100, an electromagnetic wave blocking layer configured to block electromagnetic waves, a light blocking layer configured to block light incident from the outside, and a buffer layer configured to absorb external impact.

[0126] The source circuit board 230 may be disposed on one surface of the panel lower member 300 (operation S120). The source circuit board 230 may be coupled to the lower surface of the panel lower member 300 by the second adhesive member 235. For example, the second adhesive member 235 may be a double-sided tape or an adhesive film having excellent adhesiveness. The source circuit board 230 may be connected to a plurality of source flexible films 210 extending from the side surface of the display panel 100 to the lower portion of the display panel 100. The source circuit board 230 may be disposed in an area on the lower surface of the panel lower member 300 where the support plate 400 is not disposed.

[0127] The panel lower member 300 may be disposed on the upper surface of the support plate 400 provided with the first coupling member 510 (operation S130). The panel lower member 300 may be coupled to the upper surface of the support plate 400 by the first adhesive member 410. For example, the first adhesive member 410 may be a double-sided tape or adhesive film having excellent adhesiveness.

[0128] A plurality of display devices 10 may be mounted on the lower cover 20 such that the first coupling member 510 passes through the alignment hole AH of the lower cover 20 (operation S140).

[0129] After mounting the plurality of display devices 10 on the lower cover 20, the plurality of display devices 10 may be aligned so that the side surfaces thereof are in close contact with each other (operation S150). Since the diameter of the alignment hole AH is larger than the diameter of the first coupling portion 512, the first coupling portion 512 may be finely moved within the alignment hole AH in the process of finely adjusting the positions of the plurality of display devices 10. The diameter difference between the alignment hole AH and the first coupling portion 512 may be designed so that the first coupling portion 512 may be freely moved within the alignment hole AH in the process of aligning the plurality of display devices 10.

[0130] When the alignment of the plurality of display devices 10 is completed, the second coupling portion 522 of the second coupling member 520 may be coupled with the first coupling portion 512 , and the plurality of display devices 10 may be fixed and coupled to the lower cover 20 (operation S160 ).

[0131] Accordingly, since the spliced ​​display device TD includes an alignment hole AH larger than the diameter of the first coupling portion 512, the plurality of display devices 10 can be easily aligned without a separate alignment equipment, and the assembly tolerance or coupling tolerance between the plurality of display devices 10 can be prevented. For example, since the spliced ​​display device TD includes the first coupling member 510 and the second coupling member 520 and the alignment hole AH, the distance between the plurality of display devices 10 can be minimized by fully attaching the side surfaces of the plurality of display devices 10 to each other, and the tilt tolerance of the display panel 100 can be minimized. In the spliced ​​display device TD, the scribing tolerance of the display panel 100 can be minimized, and the assembly tolerance occurring in the process of coupling the plurality of display devices 10 to the lower cover 20 can be minimized. As a result, the spliced ​​display device TD can eliminate the sense of disconnection between the plurality of display devices 10 by preventing the boundary portion or the non-display area NDA between the plurality of display devices 10 from being visually recognized, and improve the immersion of the image.

[0132] Fig.11 is a plan view showing the structure of a spliced ​​display device TD according to another embodiment, and Fig.12 is a cross-sectional view showing a spliced ​​display device TD according to another embodiment. Fig.11 and Fig.12 Shows Figure 4 and Figure 6 The spliced ​​display device TD further includes an auxiliary board 30. Therefore, components identical to those described above will be briefly described or omitted.

[0133] Reference Fig.11 and Fig.12 The spliced ​​display device TD may include a plurality of display devices 10 , a plurality of lower covers 20 , and an auxiliary panel 30 .

[0134] The spliced ​​display device TD may include a first display device 10-1, a second display device 10-2, a third display device 10-3, and a fourth display device 10-4, but the number of the display devices 10 is not limited to Fig.11 and Fig.12 The number of the display devices 10 may be determined according to the size of each of the display device 10 and the spliced ​​display device TD.

[0135] The first display device 10-1, the second display device 10-2, the third display device 10-3, and the fourth display device 10-4 may be arranged in a lattice shape, and their side surfaces may contact each other to form a spliced ​​display device TD. The first display device 10-1, the second display device 10-2, the third display device 10-3, and the fourth display device 10-4 may be arranged adjacent to each other to display a merged image. The display area DA of each of the first display device 10-1, the second display device 10-2, the third display device 10-3, and the fourth display device 10-4 is part of the spliced ​​display device TD, and may display an image of a corresponding area in an image displayed by the spliced ​​display device TD. The spliced ​​display device TD may include a plurality of display devices 10 to increase the size of the spliced ​​display device TD while displaying one or more high-quality images.

[0136] Each of the plurality of lower covers 20 may correspond to each of the plurality of display devices 10. For example, the plurality of lower covers 20 may include a first lower cover 20a, a second lower cover 20b, a third lower cover 20c, and a fourth lower cover 20d. Each of the first lower cover 20a, the second lower cover 20b, the third lower cover 20c, and the fourth lower cover 20d may include a plurality of alignment holes AH, and may be coupled to the lower portion of the display panel 100 of each of the first display device 10-1, the second display device 10-2, the third display device 10-3, and the fourth display device 10-4. The lower cover 20 may be disposed under the corresponding display device 10 to protect the lower surface of the display device 10. The lower cover 20 may be coupled to the corresponding display device 10 by a first coupling member 510 passing through the plurality of alignment holes AH and a second coupling member 520 coupled to the first coupling member 510.

[0137] The auxiliary plate 30 may be disposed on the rear surface between the plurality of lower covers 20, and may couple the adjacent lower covers 20. For example, the auxiliary plate 30 may be integrally formed, and may couple the first lower cover 20a, the second lower cover 20b, the third lower cover 20c, and the fourth lower cover 20d. The auxiliary plate 30 may have a lattice shape passing between the plurality of lower covers 20, but its shape is not limited thereto. For another example, a plurality of auxiliary plates 30 may be formed, and may couple the lower covers 20 adjacent to each other among the plurality of lower covers 20.

[0138] For example, the auxiliary plate 30 may include at least one of stainless steel, aluminum (Al), magnesium (Mg) alloy, magnesium (Mg)-lithium (Li) alloy, aluminum (Al) alloy, and polycarbonate (PC), but the material thereof is not limited thereto.

[0139] Accordingly, the spliced ​​display device TD may include a plurality of display devices 10 , a plurality of lower covers 20 , and an auxiliary board 30 , thereby realizing a very large spliced ​​display device TD while displaying high-quality images.

[0140] According to the spliced ​​display device of the embodiment, since the spliced ​​display device includes an alignment hole larger than the diameter of the first coupling portion, a plurality of display devices can be easily aligned without a separate alignment device, and an assembly tolerance or a coupling tolerance between the plurality of display devices can be prevented. In addition, since the spliced ​​display device includes the first coupling member and the second coupling member and the alignment hole, the distance between the plurality of display devices can be minimized by fully attaching the side surfaces of the plurality of display devices to each other, and the tilt tolerance of the display devices can be minimized. As a result, the spliced ​​display device can eliminate the disconnection feeling between the plurality of display devices and improve the immersion of the image by preventing the boundary portion or the non-display area between the plurality of display devices from being visually recognized.

[0141] Although the preferred embodiments of the present invention have been disclosed for illustrative purposes, those skilled in the art will appreciate that various modifications, additions and substitutions are possible, without departing from the scope and spirit of the invention as disclosed in the accompanying claims.

Claims

1. A splicing display device, comprising: A plurality of display devices, each comprising a display panel having a plurality of pixels and a support plate disposed below the display panel; a lower cover including an alignment hole and coupled to a lower portion of the support plate of each of the plurality of display devices; as well as a first coupling member including a first base portion fixed to the support plate and a first coupling portion protruding from the first base portion and passing through the alignment hole, wherein the diameter of the first connecting portion is smaller than the diameter of the alignment hole, Wherein, each of the plurality of display devices further comprises: connecting pads on a side surface of the display panel; and a flexible film disposed on one surface of the connection pad, and Wherein, the lower cover also includes: a flat portion coupled to the support plate to support the support plate; a first protrusion protruding from the flat portion in a reverse direction of the display panel and overlapping the flexible film disposed at the outermost side of the plurality of display devices; a side surface portion bent from the first protrusion to surround outer surfaces of the plurality of display devices; and A second protrusion protrudes from the flat portion in the same direction as the first protrusion and overlaps the flexible film between the plurality of display devices.

2. The splicing display device according to claim 1, in, The alignment hole surrounds the first coupling portion so as to be spaced apart from the first coupling portion on a plane.

3. The spliced ​​display device according to claim 1, further comprising: A second coupling member is provided on a lower surface of the lower cover and coupled to the first coupling portion to fix the plurality of display devices on the lower cover.

4. The splicing display device according to claim 3, in, The alignment hole is surrounded by an outer surface of the first coupling portion, a lower surface of the support plate, an inner surface of the lower cover surrounding the alignment hole, and an upper surface of a second coupling portion of the second coupling member coupled to the first coupling portion.

5. The splicing display device according to claim 3, in, The second connecting member comprises: A second base, disposed below the lower cover; and A second coupling portion protrudes from the second base portion to be coupled with the first coupling portion and closely contacts the lower surface of the lower cover.

6. The splicing display device according to claim 5, in, An outer diameter of the second coupling portion is greater than the diameter of the alignment hole.

7. A splicing display device, comprising: A plurality of display devices, each comprising a display panel having a plurality of pixels and a support plate disposed below the display panel; a plurality of lower covers corresponding to each of the plurality of display devices, the plurality of lower covers including alignment holes and coupled to a lower portion of the support plate of each of the plurality of display devices; a first coupling member including a base portion fixed to the support plate and a first coupling portion protruding from the base portion and passing through the alignment hole; as well as an auxiliary plate disposed on one surface of the plurality of lower covers to couple the plurality of lower covers, wherein the diameter of the first connecting portion is smaller than the diameter of the alignment hole, Wherein, each of the plurality of lower covers further comprises: a flat portion coupled to the support plate to support the support plate; A first protrusion protrudes from one side of the flat portion in a direction opposite to the display panel; and a second protrusion protruding from the other side of the flat portion in the opposite direction of the display panel, and Wherein, each of the plurality of lower covers disposed at the outermost side further includes a side surface portion bent from the first protrusion to surround outer surfaces of the plurality of display devices.

8. The spliced ​​display device according to claim 7, further comprising: A second coupling member is provided on a lower surface of the lower cover and coupled to the first coupling portion to fix each of the plurality of display devices to each of the plurality of lower covers.

9. The splicing display device according to claim 8, in, The second coupling member includes a second coupling portion coupled to the first coupling portion, and an outer diameter of the second coupling portion is greater than the diameter of the alignment hole.

Images