Large-area display devices and large-area display device driving systems

Abstract

This disclosure relates to large-area display devices and driving systems for large-area display devices. According to one embodiment, a large-area display device may include: a first independent display device including a plurality of first pixels; and a second independent display device including a plurality of second pixels and overlapping with the first independent display device in an overlapping region. The first independent display device is configured to be driven such that one or more of the plurality of first pixels overlapping with the second independent display device in the overlapping region do not display an image, and the second independent display device is configured to drive one or more of the plurality of second pixels located in the overlapping region to display an image.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to Korean Patent Application No. 10-2021-0155657, filed on November 12, 2021, in the Republic of Korea, the entire contents of which are incorporated herein by reference for all purposes, as if fully set forth herein. Technical Field

[0003] Embodiments of this disclosure relate to large-area display devices and large-area display device driving systems. Background Technology

[0004] With the further development of the information society, the demand for display devices for displaying images in various forms is increasing, and various display devices such as liquid crystal displays and organic light-emitting diode displays are used.

[0005] Meanwhile, large display devices may be needed for commercial purposes. However, according to this technology, since the size of the display panel used to implement the display device is limited, a large-area display device is implemented by connecting multiple display panels or independent display devices together to display a single image. Such a large-area display device can also be called a video wall, etc.

[0006] Meanwhile, each display panel or independent display device in such a large-area display device includes a central display area AA for displaying images and a non-display area NA disposed around the display area AA that does not display images. However, due to the non-display area NA of each of the independent display devices constituting the large-area display device, this causes the viewer to see a grid or lattice when viewing the large-area display device.

[0007] The non-display area NA has a frame shape that is formed to have a constant width when surrounding the edge of the display panel. The non-display area NA can be represented as a border area.

[0008] The driving circuitry used to drive the display panel is located in the non-display area NA or the bezel area. For example, the gate driving circuitry, data driving circuitry, and / or various signal lines used to drive the display panel may be located in the bezel area.

[0009] Recently, research has been conducted on achieving narrow bezels by minimizing such bezel areas in display devices, but there are limitations to making the width of the bezel area a certain size or smaller.

[0010] In typical large-area display devices, because multiple independent display devices are interconnected, the bezel areas of these independent display devices are doubled at the connecting portions. Therefore, the non-display area (NA) is more easily identified in the connecting portions. For this reason, if a single image is displayed on a large-area display device, the image is perceived as discontinuous in the connecting portions, and the viewer will see a noticeable grid or mesh pattern, which distracts from the displayed image and detracts from image quality and aesthetics.

[0011] In other words, in the case of large-area display devices achieved by connecting multiple independent display devices together, besides ideally achieving zero bezels, there is a problem: image discontinuity occurs in the seam areas where the independent display devices are connected. Therefore, this problem needs to be solved. Summary of the Invention

[0012] Embodiments of this disclosure may provide a large-area display device and a large-area display device driving system, wherein an image is identified as being continuously displayed in an area where separate display devices overlap.

[0013] Embodiments of this disclosure may provide a large-area display device, comprising: a first independent display device including a plurality of pixels; and a second independent display device including a plurality of pixels and overlapping the first independent display device in an overlapping area, wherein the first independent display device is driven such that the pixels of the plurality of pixels located in the overlapping area do not display an image, and the second independent display device drives the pixels of the plurality of pixels located in the overlapping area to display an image.

[0014] Embodiments of this disclosure may provide a large-area display device driving system, comprising: a large-area display device, wherein a plurality of detachable independent display devices are arranged to overlap each other; an independent display device position adjustment member configured to fix the position of each of the plurality of detachable independent display devices; and a horizontal frame on which the independent display device position adjustment member is mounted.

[0015] According to embodiments of this disclosure, a large-area display device and a large-area display device driving system can be provided, wherein an image is identified as being continuously displayed in an area where independent display devices overlap, so that the viewer does not see discontinuities or grid patterns. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of this disclosure and are incorporated in and constitute a part of this application, illustrate embodiments of this disclosure and, together with the specification, serve to explain the principles of this disclosure. In the drawings:

[0017] Figure 1 An example of a large-area display device is shown as a comparative example.

[0018] Figure 2 A large-area display device according to an embodiment of the present disclosure is illustrated schematically.

[0019] Figure 3 A drive unit according to an embodiment of this disclosure is shown.

[0020] Figure 4 The illustration shows a configuration in which standalone display devices are overlapped and arranged within a large-area display device according to an embodiment of the present disclosure.

[0021] Figure 5 This is a diagram illustrating the principle that seams in a large-area display device according to an embodiment of the present disclosure are visually indistinguishable.

[0022] Figure 6 This is another diagram illustrating the principle that seams in a large-area display device according to an embodiment of the present disclosure are visually indistinguishable.

[0023] Figures 7 to 10 The illustration shows an embodiment of the present disclosure in which pixels emitting light in a driving unit are driven differently according to the overlapping order of four independent display devices.

[0024] Figure 11 The illustration schematically shows the changes in the light-emitting pixels in the driving unit according to an embodiment of the present disclosure, controlled by an integrated controller.

[0025] Figure 12 It is along the implementation of this disclosure. Figure 4 A cross-sectional view of the independent display device taken from line XX′.

[0026] Figure 13 The image shows the state in which the guide rail is attached to a standalone display device according to an embodiment of the present disclosure.

[0027] Figure 14 This is a diagram illustrating the position adjustment member of an independent display device according to an embodiment of the present disclosure.

[0028] Figure 15 The state of coupling between the guide rail and the vertical axis position adjustment member according to an embodiment of the present disclosure is shown.

[0029] Figure 16 This is a diagram illustrating an implementation in which the guide rail and vertical axis fine-tuning component are implemented as a slide rail.

[0030] Figure 17This is a diagram illustrating a horizontal frame configured to mount an independent display device according to an embodiment of the present disclosure.

[0031] Figure 18 This is a diagram illustrating an example of a large-area display device driving system according to an embodiment of the present disclosure. Detailed Implementation

[0032] In the following description of examples or embodiments of the invention, reference will be made to the accompanying drawings, in which specific examples or embodiments that can be implemented are shown by way of illustration, and in which the same reference numerals and symbols may be used to denote the same or similar parts even when the reference numerals and symbols are shown in different drawings. Furthermore, in the following description of examples or embodiments of the invention, detailed descriptions of well-known functions and parts incorporated herein are omitted when it is determined that the description may make the subject matter of some embodiments of the invention unclear. Terms used herein, such as “including,” “having,” “containing,” “constituting,” “make up of,” and “formed of,” are generally intended to allow for the addition of additional parts, unless the term is used in conjunction with the term “only.” As used herein, unless the context clearly indicates otherwise, the singular form is intended to include the plural form.

[0033] The elements of the invention may be described herein using terms such as “first,” “second,” “A,” “B,” “(A),” or “(B).” Each of these terms is not intended to define the nature, order, sequence, or number of the elements, but only to distinguish the corresponding element from the others.

[0034] When it is mentioned that the first element is "connected or coupled to" the second element, or "in contact with or overlaps" the second element, it should be interpreted as meaning that the first element can not only be "directly connected or coupled to" the second element or "directly in contact with or overlaps" the second element, but also that a third element can be "inserted" between the first and second elements, or that the first and second elements can be "connected or coupled to" each other, or "in contact with or overlaps" each other, via a fourth element. Here, the second element can be included in at least one of two or more elements that are "connected or coupled to" each other, or "in contact with or overlap" each other.

[0035] When time-related terms such as “after,” “subsequent to,” “next,” and “before” are used to describe the handling or operation of an element or configuration, or a process or step in an operation, handling, or manufacturing method, these terms may be used to describe non-continuous or non-sequential handling or operation unless the terms “directly” or “immediately” are used together.

[0036] Additionally, when referring to any dimension, relative size, etc., it should be considered that, even when no specific description is specified, the numerical values ​​or corresponding information of a component or feature (e.g., level, range, etc.) include tolerances or error ranges that can be caused by various factors (e.g., processing factors, internal or external influences, noise, etc.). Furthermore, the term "may" fully encompasses all the meanings of the term "can".

[0037] In the following, various embodiments of this disclosure will be described in detail with reference to the accompanying drawings.

[0038] Figure 1 An example of a large-area display device 100 is shown.

[0039] Reference Figure 1 The large-area display device 100 may include n independent display devices 110 (where n is an integer greater than or equal to 2). The independent display devices 110 may be as follows: Figure 1 As shown, they are arranged side-by-side on a plane, or at least a portion of two or more independent display devices 110 can be arranged to overlap each other, with Figure 1 The differences are shown.

[0040] Reference Figure 1 The large-area display device 100 may include multiple independent display devices 110. The large-area display device 100 may have a 1×N structure, where two or more independent display devices 110 are arranged in a row (where N is an integer of 2 or greater). The large-area display device 100 may have an N×1 structure, where two or more independent display devices 110 are arranged in a column. The large-area display device 100 may have an N×M structure, where multiple independent display devices 110 are arranged in a matrix, the matrix having two or more rows and two or more columns (where M is an integer of 2 or greater). For example, the large-area display device 100 may include an upper-left independent display device 110a, an upper-right independent display device 110b, a lower-left independent display device 110c, and a lower-right independent display device 110d.

[0041] Independent display devices 110 can be arranged side by side on a plane; however, the lower left independent display device 110c can overlap with at least a portion of the upper left independent display device 110a, or the upper right independent display device 110b can be configured to overlap with at least a portion of the upper left independent display device 110a.

[0042] The accompanying drawings illustrate, by way of example, a large-area display device 100 comprising four independent display devices 110, but the present disclosure is not limited thereto. Furthermore, although the independent display devices 110 constituting the large-area display device 100 shown in the drawings have substantially the same area and shape, the present disclosure is not limited thereto.

[0043] The large-area display device 100 can provide a single image to a user via separate display devices 110a to 110d. The user can identify a segment of image information provided by the large-area display device 100 through a large screen corresponding to the combined area of ​​the separate display devices 110. If needed, the large-area display device 100 can provide multiple different images via the separate display devices 110.

[0044] Each of the stand-alone display devices 110 may include an organic light-emitting diode (OLED).

[0045] At the same time, refer to Figure 1 In the large-area display device 100, the border areas of the independent display devices 110 are arranged to be adjacent to each other in the areas where the independent display devices 110 are connected, making it relatively easier to identify the non-display area NA.

[0046] In the large-area display device 100, the area where the individual display devices 110 are connected to each other can be called a seam area or seam region. In such a seam area, image discontinuity may occur, which can distract the user from viewing the entire displayed image and degrade image quality.

[0047] Figure 2 A large-area display device 100 according to an embodiment of the present disclosure is shown schematically.

[0048] Each of the independent display devices 110 may include a first substrate SUB1 and driving circuitry. A display area AA and a non-display area NA surrounding the display area AA are defined on the first substrate SUB1. The non-display area NA is also referred to as a bezel area. The first substrate SUB1 may be formed of a plastic material such as polyimide (PI), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), or polycarbonate (PC), and may have flexible properties.

[0049] Multiple pixels P can be arranged on the upper surface of the display area AA of the first substrate SUB1. The stand-alone display device 110 may also include an encapsulation layer. The encapsulation layer may be configured to cover the display area AA and may be used to protect the elements in the pixels from moisture and oxygen that may be introduced from the outside.

[0050] A pixel P may include multiple sub-pixels SP. Each sub-pixel SP may include an organic light-emitting diode (OLED) that emits a corresponding color. Sub-pixels SP can be implemented using either an active matrix (AM) method or a passive matrix (PM) method. For ease of description, the following description will use the case of implementing sub-pixels SP using an active matrix method that includes transistors as an example. The organic light-emitting diodes and transistors can be driven while being electrically connected to signal lines used to apply a predetermined signal.

[0051] The pad portion can be located in the non-display area NA of the first substrate SUB1. The pad portion can include multiple pads PD and link lines LL.

[0052] The pads PD are connected to the signal lines of the display area AA via the link cable LL. The link cable LL is electrically connected to the driver via the pads PD, receives the drive signal, and transmits the drive signal to the signal lines of the display area AA.

[0053] The driving unit may include a circuit board. The circuit board may be disposed on the rear side of the first substrate SUB1. The driving IC chip may be mounted on the circuit board.

[0054] In another embodiment, the driver may be located on at least one side of the non-display area NA of the first substrate SUB1. In this case, the driver may be located in a wide bezel area of ​​the first substrate SUB1. The side of the first substrate SUB1 on which the driver is located may be a wide bezel area, while the other side on which the driver is not located may be a narrow bezel area.

[0055] Each of the stand-alone display devices 110 according to embodiments of the present disclosure may have a driving unit DU consisting of two or more pixels P.

[0056] The driving unit DU may consist of two or more pixels P, and during the image display period, only one pixel p of the pixels P included in the driving unit DU displays the image, while the remaining pixels P do not display the image.

[0057] In the large-area display device 100 according to the embodiments of the present disclosure, the width of the bezel area can be less than the distance between pixels P driven in two adjacent driving units DU. Therefore, image discontinuity problems can be prevented in the area where two independent display devices 110 are connected to each other.

[0058] Furthermore, the large-area display device 100 according to embodiments of this disclosure may have a structure in which each of the individual display devices 110 is separable. For example, different individual display devices 110 may be mixed and matched, and connected together to form large display devices of various sizes and shapes.

[0059] The independent display device 110 can freely implement different stacking structures, and the pixels P driven by the driving unit DU can be set differently according to the stacking structure.

[0060] Please refer to later Figure 5 and Figure 6 A specific implementation is described in which the driving of pixel P in the driving unit DU varies according to the stacking structure of the independent display device 110.

[0061] The large-area display device 100 according to the embodiments of the present disclosure can drive only one pixel P among the pixels P included in the driving unit DU when driving image display. Therefore, the lifespan of the large-area display device 100 according to the embodiments of the present disclosure can be more than twice the lifespan of a large-area display device having the capability to display an image using all pixels P.

[0062] The large-area display device 100 according to embodiments of the present disclosure may further include an integrated controller 210, which is configured to set drive units DU differently depending on the stacking structure of the independent display devices 110.

[0063] Under the control of the integrated controller 210, the driving unit of the independent display device 110 can drive only one pixel P among the pixels P included in the driving unit DU.

[0064] In the driving unit DU, when one pixel P displays an image, the other pixels P do not display an image. For example, when two pixels P from two different independent display devices 110 overlap each other, coordinated control can be provided so that only one pixel in the double-stacked pixels emits light for the image.

[0065] Reference Figure 2 In the large-area display device 100 according to the embodiments of the present disclosure, at least a portion of two or more independent display devices 110 may overlap each other.

[0066] exist Figure 2In the large-area display device 100 shown, the upper left independent display device 110a is located at the bottom (lowest point), the upper right independent display device 110b is located on the upper left independent display device 110a, the lower left independent display device 110c is located on the upper right independent display device 110b, and the lower right independent display device 110d is located on the lower left independent display device 110c.

[0067] Regarding the two independent display devices 110 that overlap each other, the independent display device 110 located on the upper side may overlap with at least a portion of the display area AA of the independent display device 110 located on the lower side (e.g., below).

[0068] Reference Figure 2 The upper right independent display device 110b, which is positioned to overlap with at least a portion of the upper left independent display device 110a, can be configured to overlap with at least a portion of the display area AA of the upper left independent display device 110a.

[0069] Similarly, the lower left independent display device 110c, which is positioned to overlap with at least a portion of the upper left independent display device 110a, can be configured to overlap with at least a portion of the display area AA of the upper left independent display device 110a.

[0070] Therefore, regarding two overlapping independent display devices 110, the non-display area NA of the upper independent display device 110 can be positioned on the display area AA of the lower (e.g., below) independent display device 110.

[0071] For example, the border area of ​​the lower left independent display device 110c can be positioned to overlap with the display area AA of the upper left independent display device 110a.

[0072] Reference Figure 2 Each of the standalone display devices 110 may include at least three narrow bezel sides. In some cases, the standalone display device 110 may include one wide bezel side.

[0073] exist Figure 2 The invention discloses an embodiment in which each of the independent display devices 110 includes three narrow bezel sides and one wide bezel side.

[0074] Two or more pads PD and link lines LL can be located on a surface on which a wide bezel is located within the standalone display device 110. The drive unit DU of the standalone display device 110 can be located on the rear side of the standalone display device 110 by means of pads PD connected to the side where the wide bezel is located.

[0075] Figure 3 A drive unit DU according to an embodiment of this disclosure is shown.

[0076] Reference Figure 3 According to embodiments of the present disclosure, the driving unit DU may include pixels P arranged in a matrix structure of two rows and two columns or more.

[0077] Pixel P may include two or more sub-pixels SP. The accompanying drawings illustrate, by way of example, a case where pixel P includes red (R), green (G), and blue (B) sub-pixels SP arranged sequentially in one direction; however, the invention is not limited thereto. For example, pixel P may include red (R), blue (B), green (G), and white (W) sub-pixels SP. The arrangement order of the sub-pixels SP can vary depending on the luminescent material, luminescent area, configuration of the compensation circuit, etc.

[0078] Reference Figure 3 A driving unit DU may include an upper left pixel Plu located on the upper left side, an upper right pixel Pru located on the upper right side, a lower left pixel Pld located on the lower left side, and a lower right pixel Prd located on the lower right side.

[0079] In the large-area display device 100 according to the embodiments of the present disclosure, only the top left pixel Plu, only the top right pixel Pru, only the bottom left pixel Pld, or only the bottom right pixel Prd can be driven to display an image (for example, if necessary, one of the four pixels can be driven at a time, thereby maintaining the lifetime of the other three pixels to be used at different times).

[0080] Figure 4 The illustration shows a state in which standalone display devices 110, according to an embodiment of the present disclosure, are overlapped and disposed within a large-area display device 100.

[0081] Reference Figure 4 The upper left independent display device 110a and the lower left independent display device 110c can be configured to overlap each other.

[0082] Each independent display device 110 may include a first substrate SUB1, a second substrate SUB2 positioned opposite to the first substrate SUB1, and an encapsulation layer ENCAP between the first substrate SUB1 and the second substrate SUB2.

[0083] The light-blocking layer configured as a molecular pixel can be located on the second substrate SUB2. In some cases, color filters, polarizers, etc., can be further located on the second substrate SUB2.

[0084] Preferably, the first substrate SUB1 and the second substrate SUB2 are flexible substrates with flexible properties. Preferably, the second substrate SUB2 has high transmittance to visible light.

[0085] Preferably, the first substrate SUB1 and the second substrate SUB2 have a relatively thin thickness. When the first substrate SUB1 and the second substrate SUB2 are thinner, the thickness of the independent display device 110 becomes thinner, which makes it possible to reduce or minimize the step difference in the overlapping areas of the independent display devices 110.

[0086] Reference Figure 4 When both the first substrate SUB1 and the second substrate SUB2 are flexible substrates, the standalone display device 110 may have a curved surface in which a portion of the display area AA is bent. However, since users of the large-area display device 100 view images from a much greater distance than those of a typical display device, and because the standalone display device 110 is thin and the steps are difficult to discern, viewers may have difficulty perceiving the curved surface of the display area AA.

[0087] At the same time, with Figure 4 As shown, the two or more independent display devices 110 constituting the large-area display device 100 do not have a curved surface in which a portion of the display area AA is bent, but can be arranged as a flat stack.

[0088] For example, the lower left independent display device 110c can be disposed above the upper left independent display device 110a, and the lower left independent display device 110c can have a flat bottom surface.

[0089] Therefore, two or more independent display devices 110 can be stacked sequentially while maintaining a step corresponding to the thickness of each of the independent display devices 110. Thus, two or more independent display devices 110 can be stacked in a stair-like shape to configure a large-area display device 100.

[0090] In this configuration, the large-area display device 100 may include two or more independent display devices 110 arranged at an angle relative to the viewing surface of the large-area display device 100. Since the user of the large-area display device 100 views the image from a much greater distance than a typical display device, the effect of the step difference caused by the thickness of the independent display devices 110 can be largely ignored, as it is unlikely to be noticed by the viewer in any way.

[0091] Furthermore, in some cases, viewers viewing the images displayed on the large-area display device 100 may view the images in different environments. For example, the viewing distance from the large-area display device 100 may differ for each viewer, as may the distance from the ground on which the large-area display device 100 is placed, or the viewing angle of the large-area display device 100 may differ. Therefore, even if the independent display device 110 constituting the large-area display device 100 is placed at an angle relative to the viewing surface of the large-area display device 100, this can still be a factor that improves viewer satisfaction in some environments.

[0092] In the following text, for ease of description, it is assumed that the large-area display device 100 includes a separate display device 110 with a curved surface, but is not limited thereto.

[0093] In another embodiment of the large-area display device 100 according to the present disclosure, the second substrate SUB2 may be formed of a glass substrate. In this case, even if the individual display devices 110 overlap each other, it is difficult for the user of the large-area display device 100 to perceive the step difference caused by the overlap of the individual display devices 110.

[0094] Reference Figure 4 A portion of the driving unit DU of the upper left independent display device 110a can be covered by the non-display area NA and the display area AA of the lower left independent display device 110c.

[0095] Specifically, in the driving unit DU of the upper left independent display device 110a, in the driving unit DU located adjacent to the lower left independent display device 110c, half of the pixels P included in the driving unit DU can overlap with the lower left independent display device 110c.

[0096] In a driving unit DU, a pixel P located in the direction of the lower left independent display device 110c may not display an image. Similarly, in a driving unit DU, any pixel P located in the direction of the upper left independent display device 110a may display an image. For example, pixels P in the upper left independent display device 110a that overlap with pixels P in the lower left independent display device 110c may be controlled to not display an image (e.g., pixels located below the overlapping lip remain off), while pixels P in the upper left independent display device 110a may be controlled to turn on to display an image, and vice versa.

[0097] Figure 5 This is a diagram illustrating the principle that seams in a large-area display device 100 according to an embodiment of the present disclosure are not visually recognizable by the user.

[0098] Reference Figure 5The upper left independent display device 110a can be positioned to overlap with the lower left independent display device 110c. The lower left independent display device 110c can be positioned to overlap with a portion of the display area AA of the upper left independent display device 110a.

[0099] Meanwhile, a border with a first width NA1 is located on the upper left independent display device 110a. Here, the border with the first width NA1 can be the border of the lower left independent display device 110c. The first width NA1 is less than or equal to the distance d1 between pixels P displaying images in adjacent driving units DU (e.g., NA1 ≤ d1). For example, a group of four pixels can be arranged in a driving unit DU (which can have a square shape), each pixel including three sub-pixels.

[0100] Reference Figure 5 The top left pixel Plu of the driving unit DU displays an image, and the distance d1 between the top left pixels Plu of adjacent driving units DU can be greater than or equal to the first width NA1. Therefore, in the area where the top left independent display device 110a and the bottom left independent display device 110c overlap, no image discontinuity caused by the border of the first width NA1 may occur (e.g., visually recognizable grid or grille effect can be prevented).

[0101] Meanwhile, the bezel with a second width NA2 can be located below the lower left independent display device 110c. Here, the bezel with the second width NA2 can be the bezel of the upper left independent display device 110a.

[0102] The border of the second width NA2 can be a narrow border (e.g., NA2≤d1), or it can be a wide border (e.g., NA2>d1).

[0103] If the border of the second width NA2 is formed as a narrow border, then the second width NA2 can be the same as the first width NA1 (for example, NA2 = NA1).

[0104] Here, a narrow bezel can refer to a bezel width that is equal to or less than the distance between pixels P of the image displayed in adjacent driving units DU. Conversely, a wide bezel can refer to a bezel width that is greater than the distance d between pixels P of the image displayed in adjacent driving units DU.

[0105] Because the narrow bezel is located on the pixels P that do not display images, the user cannot perceive the seam. Moreover, even in areas where two independent display devices 110 overlap, the pixels P on the large-size display can be evenly and consistently spaced.

[0106] At the same time, Figure 5In the diagram, the narrow bezel is shown as being positioned to overlap with pixel P located in the outermost row (e.g., the bottom row), but the narrow bezel can be located in a row further in from the outermost row (e.g., the third row from the bottom, etc.). That is, the narrow bezel can overlap within the display area AA. In this case, at least a portion of the display area AA of the upper left independent display device 110a and the display area AA of the lower left independent display device 110c can be positioned to overlap each other.

[0107] For example, when the narrow bezel is located in the third row from the bottom, among the pixels P in the upper left independent display device 110a, the pixels P in the third row from the bottom, the second row from the bottom, and the bottom row can be located in the overlapping area. In this case, among the pixels P in the upper left independent display device 110a, the pixels P located in the overlapping area with the lower left independent display device 110c do not display an image. In such a structure, the narrow bezel can be located in a row further inward than the outermost row (e.g., the third row from the bottom). According to such a structure, the area of ​​the overlapping region of the independent display devices 110 can be increased, and the independent display devices 110 can be more stably overlapped in the large-area display device 100, which can increase the intensity of the large-area display device 100.

[0108] Furthermore, the narrow bezel can be located in a row further inward than the outermost row (e.g., the bottom row) (e.g., the third row, fifth row, etc. from the bottom). That is, a user of stacked independent display devices 110 can freely choose the area of ​​the overlapping region where the independent display devices 110 overlap. In this case, by stacking the overlapping independent display devices 110, a user of the large-area display device 100 can freely choose the area where the large-area display device 100 displays an image, while preventing seams from being identified. Accordingly, even using the same number of independent display devices 110, the area of ​​the large-area display device 100 as a whole can be different. Therefore, in the large-area display device 100, the total area of ​​the image display region can vary according to the usage environment and can be freely adjusted to meet the user's needs.

[0109] In the following description, for ease of description, it is assumed that the narrow border is positioned to overlap with a pixel P located in the outermost row or column. However, in embodiments according to this specification, the narrow border may be positioned to overlap with a pixel P located in a row further inside than the outermost row, or the narrow border may be positioned to overlap with a pixel P located in a column further inside than the outermost column.

[0110] Reference Figure 5In this configuration, the pixels Plu displaying the image in the upper left independent display device 110a may not overlap with those in the lower left independent display device 110c. In this case, the light emitted from the upper left independent display device 110a does not pass through the substrate of the lower left independent display device 110c. Therefore, the light emitted from the upper left independent display device 110a can reach the user without having to pass through any medium other than air. This further improves the visibility of the seam.

[0111] Figure 6 This is another figure used to illustrate the principle that seams are not visually recognizable in a large-area display device 100 according to an embodiment of the present disclosure.

[0112] Reference Figure 6 The upper left independent display device 110a is positioned to overlap with the upper right independent display device 110b. The upper right independent display device 110b is positioned to overlap with a portion of the display area AA of the upper left independent display device 110a.

[0113] A border with a fourth width NA4 can be located on the upper left independent display device 110a. Here, the border with the fourth width NA4 can be the border of the upper right independent display device 110b. The fourth width NA4 can be less than or equal to the distance d2 between pixels P of the image displayed in adjacent driving units DU (e.g., NA4 ≤ d2).

[0114] Reference Figure 6 The top-left pixel Plu of the driving unit DU displays an image, and the distance d2 between the top-left pixels Plu in adjacent driving units DU can be greater than or equal to the fourth width NA4. Therefore, in the area where the top-left independent display device 110a and the top-right independent display device 110b overlap, no image discontinuity caused by the border of the fourth width NA4 may occur.

[0115] The bezel with a third width NA3 can be located below the upper right independent display device 110b. Here, the bezel with the third width NA3 can be the bezel of the upper left independent display device 110a.

[0116] The border of the third width NA3 can be a narrow border (e.g., NA3≤d2) or a wide border (e.g., NA3>d2).

[0117] When the border of the third width NA3 is formed as a narrow border, the third width NA3 can be the same as the fourth width NA4 (for example, NA3 = NA4).

[0118] All of the borders from the first width NA1 to the fourth width NA4 can be narrow borders, and any one of the borders can be a wide border.

[0119] For ease of explanation, it is assumed that the borders of the first width NA1, the second width NA2, the third width NA3, and the fourth width NA4 are all narrow borders.

[0120] Figures 7 to 10 The diagram illustrates a configuration in which pixels emitting light in the driving unit DU are driven differently depending on the overlapping order of the four independent display devices 110. For example, the four independent display devices 110 may have different driving orders based on how they are stacked and overlapped with each other.

[0121] Reference Figures 7 to 10 The large-area display device 100 according to embodiments of the present disclosure may include a double-overlapping region of two independent display devices 110 and a quadruple-overlapping region of four independent display devices 110. Each independent display device 110 is formed as thin, so it can be assumed that the step difference in the double-overlapping region and the quadruple-overlapping region can be considered negligible.

[0122] In these two-overlapping and four-overlapping regions, the lower pixel P of the independent display device 110 does not display an image.

[0123] Reference Figure 7 The top left independent display device 110a is located at the bottom (the very bottom), and the independent display devices 110 in the same row as the top left independent display device 110a are stacked in sequence.

[0124] After all the independent display devices 110 located in the same row as the top-left independent display device 110a are stacked, the independent display devices 110 located in the row immediately following the top-left independent display device 110a are stacked in sequence.

[0125] Reference Figure 7 The top-left independent display device 110a is located at the bottom (the very bottom), and the top-right independent display device 110b, which is in the same row as the top-left independent display device 110a, is stacked on top of it. The bottom-left independent display device 110c and the bottom-right independent display device 110d are stacked on top of the top-right independent display device 110b in sequence.

[0126] In the aforementioned stacked structure, the top-left pixel Plu in the driving unit DU is the luminous pixel, while the other overlapping pixels are controlled to remain off. In a driving unit DU shown in the top-left independent display device 110a, the other three pixels Pru, Pld, and Prd, besides the top-left pixel Plu, can overlap with other independent display devices 110b, 110c, and 110d.

[0127] In the large-area display device 100 according to the embodiments of this disclosure, such as Figure 7As shown, the independent display devices 110 are stacked, and only the top left pixel Plu is driven in a single driving unit DU, thereby extending the lifespan of the large-area display device 100 and resolving image discontinuities at the seam area. For example, if all four overlapping pixels were illuminated, this could generate unwanted heat, which would reduce the lifespan of the large-area display device 100 and could also degrade the image quality in the seam area (e.g., making the seam area appear too bright relative to the rest of the display area of ​​the large-area display device 100).

[0128] Reference Figure 8 The upper right independent display device 110b is located at the bottom (the very bottom), and the independent display devices 110 in the same row as the upper right independent display device 110b are stacked in sequence.

[0129] After all the independent display devices 110 located in the same row as the upper right independent display device 110b are stacked, the independent display devices 110 located in the row immediately following the upper right independent display device 110b are stacked in sequence.

[0130] Reference Figure 8 The upper right independent display device 110b is located at the bottom (the very bottom), and the upper left independent display device 110a, which is in the same row as the upper right independent display device 110b, is stacked on top of it. The lower right independent display device 110d and the lower left independent display device 110c are stacked on top of the upper left independent display device 110a in sequence.

[0131] In the aforementioned stacked structure, the top-right pixel Pru among the multiple pixels included in the driving unit DU is the luminous pixel, while the other overlapping pixels are controlled to remain off. In a driving unit DU shown in the top-right independent display device 110b, the other three pixels Plu, Pld, and Prd, besides the top-right pixel Pru, can overlap with other independent display devices 110a, 110c, and 110d.

[0132] In the large-area display device 100 according to the embodiments of this disclosure, such as Figure 8 As shown, the independent display devices 110 are stacked, and only the upper right pixel Pru is driven in a single driving unit DU, thereby extending the lifespan of the large-area display device 100 and resolving any image discontinuity issues at the seam area.

[0133] Reference Figure 9 The lower left independent display device 110c is located at the bottom (the very bottom), and the independent display devices 110 are stacked in the same row as the lower left independent display device 110c.

[0134] After all the independent display devices 110 in the same row as the lower left independent display device 110c are stacked, the independent display devices 110 in the row immediately preceding the lower left independent display device 110c are stacked in sequence.

[0135] Reference Figure 9 The lower left independent display device 110c is located at the bottom (the very bottom), and the lower right independent display devices 110 are stacked in the same row. On the lower right independent display device 110d, the upper left independent display device 110a and the upper right independent display device 110b are stacked in sequence.

[0136] In the aforementioned stacked structure, the lower left pixel Pld among the multiple pixels included in the driving unit DU is the luminescent pixel. In one driving unit DU shown in the lower left independent display device 110c, the other three pixels Plu, Pru, and Prd, besides the lower left pixel Pld, can overlap with other independent display devices 110a, 110b, and 110d and are controlled to remain off because they are located below a portion of another independent display device 110.

[0137] In the large-area display device 100 according to the embodiments of this disclosure, such as Figure 9 As shown, the independent display devices 110 are stacked, and only the lower left pixel Pld is driven in a single driving unit DU, thereby extending the lifespan of the large-area display device 100 and resolving any image discontinuity issues at the seam area.

[0138] Reference Figure 10 The lower right independent display device 110d is located at the bottom (the very bottom), and the independent display devices 110 in the same row as the lower right independent display device 110d are stacked in sequence. In other words, the four independent display devices 110 can be positioned like slightly overlapping petals of a flower (e.g., a similar rectangular or square piece composed of four rectangles or squares).

[0139] After all the independent display devices 110 in the same row as the lower right independent display device 110d are stacked, the independent display devices 110 in the row immediately preceding the lower right independent display device 110d are stacked in sequence.

[0140] Reference Figure 10 The lower right independent display device 110d is located at the bottom (the very bottom), and the lower left independent display device 110c, which is in the same row as the lower right independent display device 110d, is stacked on top of it. The upper right independent display device 110b and the upper left independent display device 110a are stacked on top of the lower left independent display device 110c.

[0141] In the aforementioned stacked structure, the lower right pixel Prd among the multiple pixels included in the driving unit DU is the light-emitting pixel. In a driving unit DU shown in the lower right independent display device 110d, the other three pixels Plu, Pru, and Pld, besides the lower right pixel Prd, can overlap with other independent display devices 110a, 110b, and 110c, and these three overlapping pixels can be controlled to remain off.

[0142] In the large-area display device 100 according to the embodiments of this disclosure, such as Figure 10 As shown, the independent display devices 110 are stacked, and only the lower right pixel Prd is driven in a single driving unit DU, thereby extending the lifespan of the large-area display device 100 and resolving image discontinuities at the seam area.

[0143] Figure 11 The diagram schematically illustrates how the light-emitting pixels in the drive unit DU change according to the control of the integrated controller 210.

[0144] Reference Figure 11 The integrated controller 210 can receive information about the driving mode used to drive the large-area display device 100. Based on the input information, the integrated controller 210 can transmit information about which pixel in the driving unit DU should be driven to the driving circuitry of each of the independent display devices 110.

[0145] For example, the integrated controller 210 can receive information about the driving mode to drive the large-area display device 100 in the top left pixel Plu driving mode, the top right pixel Pru driving mode, the bottom left pixel Pld driving mode, and the bottom right pixel Prd driving mode.

[0146] The driving circuit of the independent display device 110 can display an image by driving any one of the pixels included in the driving unit DU based on the information received from the integrated controller 210.

[0147] Therefore, the stand-alone display device 110 included in the large-area display device 100 can display images by driving only the selected pixels.

[0148] Figure 12 It is along Figure 4 A cross-sectional view of line XX′ of the independent display device 110.

[0149] Although as an example Figure 12 The image shows a separate display device 110a in the upper left corner, but... Figure 12 The structure shown can be applied to the stand-alone display device 110 according to embodiments of this disclosure.

[0150] Reference Figure 12According to embodiments of the present disclosure, the upper left independent display device 110a may include a first substrate SUB1, a second substrate SUB2, and an encapsulation layer ENCAP.

[0151] A plurality of pixels P are defined on a first substrate SUB1, and each of the plurality of pixels P may include an organic light-emitting diode (OLED) and a driving transistor (DR) for driving the organic light-emitting diode (OLED).

[0152] Reference Figure 12 The light-blocking layer LS can be located on the first substrate SUB1. The light-blocking layer LS can be configured to block external light from entering, thereby preventing the generation of photocurrent in the transistor.

[0153] The buffer layer (BUF) can be located on the photoblock layer (LS). The buffer layer (BUF) is used to protect the thin-film transistor formed in subsequent processes from impurities such as alkaline ion leakage or other types of outgassing from the photoblock layer (LS). The buffer layer (BUF) can be silicon oxide (SiOx), silicon nitride (SiNx), or multiples thereof.

[0154] The semiconductor layer A driving the transistor DR can be located on the buffer layer BUF. Semiconductor layer A can be made of silicon semiconductor or oxide semiconductor. The silicon semiconductor can include amorphous silicon or crystalline polycrystalline silicon. Semiconductor layer A can include a drain region and a source region containing p-type or n-type impurities, and includes a channel between the drain and source regions.

[0155] The gate insulating layer GI can be located on the semiconductor layer A. The gate insulating layer GI can be formed of silicon oxide (SiOx), silicon nitride (SiNx), or multiple layers thereof. The gate electrode G can be located on the gate insulating layer GI in a predetermined region of the semiconductor layer A, namely, the location corresponding to the channel when impurities are implanted. The gate electrode G can be formed of any one of the following materials: molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or alloys thereof. Alternatively, the gate electrode G can be a multilayer formed of any one of the following materials: molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or alloys thereof. For example, the gate electrode G can be a molybdenum / aluminum-neodymium or molybdenum / aluminum bilayer.

[0156] An interlayer insulating layer (ILD) that insulates the gate electrode G may be located on the gate electrode G. The ILD may be a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), or multiple layers thereof. The source electrode S and the drain electrode D are located on the ILD. The source electrode S and the drain electrode D are connected to the semiconductor layer A through contact holes that expose the source and drain regions of the semiconductor layer A. The source electrode S and the drain electrode D may be formed as a single layer or multiple layers, and if the source electrode S and the drain electrode D are a single layer, they may be formed from any one of the following materials: molybdenum (Mo), aluminum (Al), chromium (Cr), gold (Au), titanium (Ti), nickel (Ni), neodymium (Nd), and copper (Cu), or alloys thereof. Alternatively, if the source electrode S and the drain electrode D are multiple layers, they may be formed as a molybdenum / aluminum-neodymium bilayer, a titanium / aluminum / titanium bilayer, a molybdenum / aluminum / molybdenum bilayer, or a molybdenum / aluminum-neodymium / molybdenum trilayer. Therefore, the driving transistor DR can be configured to include a semiconductor layer A, a gate electrode G, a source electrode S, and a drain electrode D.

[0157] The passivation layer PAS is located on the first substrate SUB1, which includes the driving transistor DR. The passivation layer PAS is an insulating layer that protects the underlying devices and can be a silicon oxide layer (SiOx), a silicon nitride layer (SiNx), or multiple layers thereof.

[0158] The outer coating OC is located on the passivation layer PAS. The outer coating OC can be a planarization layer used to reduce step differences in the underlying structure, and can be made of organic materials such as polyimide, benzocyclobutene resin, or acrylate. The pixel contact hole PH used to expose the source electrode S by exposing the passivation layer PAS can be located in a portion of the outer coating OC.

[0159] An organic light-emitting diode (OLED) may include a first electrode E1 facing each other, an organic light-emitting layer OL, and a second electrode E2.

[0160] The first electrode E1 can be an anode. The first electrode E1 can be connected to the source electrode S of the driving transistor DR through a pixel contact hole PH passing through the outer coating OC and the passivation layer PAS. Depending on the light-emitting method employed, the first electrode E1 can be made of a transparent conductive material such as ITO (indium tin oxide), IZO (indium zinc oxide), or ZnO (zinc oxide), and can be used as a transmission electrode, or can be used as a reflection electrode by including a reflective layer. The reflective layer can be made of aluminum (Al), copper (Cu), silver (Ag), nickel (Ni), or alloys thereof, preferably made of APC (silver / palladium / copper alloy).

[0161] A dam layer BN can be disposed on a first substrate SUB1 on which a first electrode E1 is formed. The dam layer BN can be formed of an organic material such as polyimide, benzocyclobutene series resin, or acrylate. The dam layer BN may include an opening that exposes most of the first electrode E1. The dam layer BN can be configured to expose the central portion of the first electrode E1 but cover the side ends of the first electrode E1.

[0162] An organic light-emitting layer OL can be disposed on a first substrate SUB1 on which a dam layer BN is formed. The organic light-emitting layer OL is a layer that emits light by binding electrons and holes, and may further include any one or more of a light-emitting layer EML, a hole injection layer HIL, a hole transport layer HTL, an electron transport layer ETL, and an electron injection layer EIL.

[0163] A second electrode E2 can be disposed on the organic light-emitting layer OL. The second electrode E2 can be widely formed on the entire surface of the first substrate SUB1. The second electrode E2 can be used as a transmission electrode or a reflection electrode corresponding to the light-emitting method employed. If the second electrode E2 is a transmission electrode, it can be formed of a transparent conductive material such as indium tin oxide (ITO) or indium zinc oxide (IZO), or it can be made of magnesium (Mg), calcium (Ca), aluminum (Al), silver (Ag), or alloys thereof with a thickness sufficient to transmit light.

[0164] An encapsulation layer (ENCAP) can be located on an organic light-emitting diode (OLED). The ENCAP layer can prevent external moisture or oxygen from penetrating into the OLED, which is susceptible to the effects of external moisture or oxygen.

[0165] The encapsulation layer ENCAP can be a single layer, or it can be multiple layers. For example, if the encapsulation layer ENCAP includes multiple layers, it can include one or more inorganic encapsulation layers and one or more organic encapsulation layers. As a specific example, the encapsulation layer can be configured as a structure in which a first inorganic encapsulation layer, an organic encapsulation layer, and a second inorganic encapsulation layer are stacked sequentially.

[0166] The first inorganic encapsulation layer can be formed as an organic light-emitting diode (OLED) closest to the substrate SUB, on which a second electrode E2 corresponding to the cathode is formed. The first inorganic encapsulation layer is formed from an inorganic insulating material capable of low-temperature deposition, such as silicon nitride (SiNx), silicon oxide (SiOx), silicon oxide nitride (SiON), or aluminum oxide (Al2O3). Because the first inorganic encapsulation layer is deposited at a low temperature, it can prevent the organic light-emitting layer OL, which includes organic materials susceptible to high temperatures, from being damaged during the deposition process.

[0167] The organic encapsulation layer can have a smaller area than the first inorganic encapsulation layer. The organic encapsulation layer can serve as a buffer to alleviate interlayer stress caused by bending of the standalone display device 110, and can also enhance planarization performance. The organic encapsulation layer can be formed from, for example, organic insulating materials such as acrylic resin, epoxy resin, polyimide, polyethylene, or silicon carbide (SiOC).

[0168] An adhesive component AD for bonding the first substrate SUB1 and the second substrate SUB2 can be provided on the encapsulation layer ENCAP. The adhesive component AD is also called a filler. The adhesive component AD can fill the gap between the first substrate SUB1 and the second substrate SUB2, and the first substrate SUB1 and the second substrate SUB2 can be bonded to each other through the adhesive component AD.

[0169] The sealing member SEAL can be located on the outside of the adhesive member AD. In this case, the stand-alone display device 110 according to an embodiment of this disclosure can be a panel sealed by a sealing method known as the "dam and fill" method.

[0170] The adhesive member AD can be used as a filler to fill the space between the first substrate SUB1 and the second substrate SUB2, and the sealing member SEAL can seal the exterior of the adhesive member AD when the first substrate SUB1 and the second substrate SUB2 are joined to prevent the adhesive member AD from flowing out of the panel.

[0171] The black matrix BM can be located on the bonding component AD. The black matrix BM can be configured to form sub-pixels SP and prevent light from mixing between sub-pixels SP.

[0172] In some cases, the second substrate SUB2 may be a color filter substrate. If the second substrate SUB2 is a color filter substrate, then the second substrate SUB2 may include a color filter CF located on the light-emitting region of the organic light-emitting diode (OLED). The color filter CF may include a material having a predetermined absorption rate for light in a specific wavelength band.

[0173] The second substrate SUB2 may include at least one inclined surface 1210 (e.g., a tapered edge or a beveled edge). The inclined surface 1210 is configured to ensure a sufficient viewing angle even when the independent display devices 110 overlap.

[0174] One end of the inclined surface 1210 can be located outside the sealing member SEAL. Therefore, light emitted from the independent display device 110 located below the overlapping independent display device 110 can be emitted at a wide angle.

[0175] The other end of the inclined surface 1210 can be located outside the display area AA. Therefore, the propagation direction of light emitted from the independent display device 110 located above the overlapping independent display device 110 will not be distorted.

[0176] The tilted surface 1210 can be positioned on all four sides (e.g., top, bottom, left, and right) of the independent display device 110 to have the same width. Alternatively, the tilted surface 1210 can be positioned on two side surfaces (e.g., left and right) of the independent display device 110 with a wider width, and on two other sides (e.g., top and bottom) of the independent display device 110 with a narrower width.

[0177] The rear cover 1220 can be further positioned on the rear side of the first substrate SUB1. If the rear cover 1220 is located on the rear surface of the first substrate SUB1, the aforementioned sealing member SEAL can be used to join the second substrate SUB2 and the rear cover 1220.

[0178] Figure 13 This illustrates the state in which the guide rail 1240 is attached to the stand-alone display device 110 according to an embodiment of this disclosure.

[0179] Reference Figure 13 The guide rail 1240 can be attached to the stand-alone display device 110 according to an embodiment of the present disclosure.

[0180] After changing the overlapping structure of the independent display device 110, the guide rail 1240 can be used to fix the independent display device 110 together in the appropriate position.

[0181] Specifically, the large-area display device 100 according to embodiments of this disclosure may include detachable independent display devices 110. After the overlapping structure is changed, the independent display devices 110 can be fixed in place, and guide rails 1240 can be used to fix the independent display devices 110. For example, the independent display devices 110 can overlap and snap together in different positions, and can be unstuck, in order to provide a large-area display device 100 with different sizes and shapes that is adjustable and reconfigurable.

[0182] Reference Figure 13 The guide rail 1240 can be attached to the rear surface of the rear cover 1220 of the independent display device 110.

[0183] The guide rail 1240 can be attached to move the independent display device 110 in the vertical direction.

[0184] Figure 14 This is a diagram illustrating the position adjustment member 1400 of an independent display device according to an embodiment of the present disclosure.

[0185] Reference Figure 14 The independent display device position adjustment component 1400 may include a horizontal axis position adjustment component 1410 and a vertical axis position adjustment component 1420.

[0186] The independent display device position adjustment component 1400 can be coupled to the aforementioned guide rail 1240. The position of each of the independent display devices 110 in the large-area display device 100 can be finely adjusted by the independent display device position adjustment component 1400.

[0187] The horizontal axis position adjustment member 1410 can be fixed to the support plate 1422 of the vertical axis position adjustment member 1420. For example, the horizontal axis position adjustment member 1410 and the support plate 1422 can be integrally formed.

[0188] The horizontal axis position adjustment component 1410 may include a wall fixing part 1411, a rear protrusion 1412, a first groove forming part 1413, a first groove 1414, a second groove forming part 1415, and a second groove 1416.

[0189] The wall fixing part 1411 can contact the support plate 1422 to connect the horizontal axis position adjusting member 1410 and the vertical axis position adjusting member 1420. The wall fixing part 1411 can be fixed to the support plate 1422 using, for example, coupling members (e.g., screws or fasteners).

[0190] The rear protrusion 1412 may be formed to extend from the wall fixing portion 1411. The extension direction of the rear protrusion 1412 may be perpendicular to the support plate 1422, but the rear protrusion 1412 may also extend from the wall fixing portion 1411 at an acute or obtuse angle with the support plate 1422.

[0191] The first recess forming portion 1413 may be formed to extend from the rear protrusion 1412. The first recess 1414 is formed by the first recess forming portion 1413, the rear protrusion 1412 and the wall fixing portion 1411. The first recess 1414 is configured to receive the horizontal frame 1730 for fixing the independent display device 110.

[0192] The first groove 1414 can have the following characteristics: Figure 14 The shape shown is angled, but it can also be formed as a curved surface without corners.

[0193] like Figure 14 As shown, the second groove forming portion 1415 can extend from the first groove forming portion 1413 to form the second groove 1416. Alternatively, the second groove forming portion 1415 can protrude from the wall fixing portion 1411 to form the second groove 1416.

[0194] The second recess 1416 is configured to receive a horizontal frame for fixing the independent display device 110.

[0195] The first recess 1414 can be used to install an independent display device 110 to display an image. The second recess 1416 can be used to temporarily install the independent display device 110.

[0196] The second recess 1416 is located below the first recess 1414. When the independent display device 110 is temporarily mounted on the horizontal frame to change the stacking structure of the independent display device 110, the horizontal frame 1730 can be accommodated in the second recess 1416.

[0197] If necessary, the horizontal axis position adjustment member 1410 may also include a flat bottom surface 1417 located below the second groove 1416.

[0198] The vertical axis position adjustment component 1420 may include a support plate 1422 and a vertical axis fine-tuning component 1424.

[0199] One side of the vertical axis fine-tuning member 1424 can be fixed to the support plate 1422. The other side of the vertical axis fine-tuning member 1424 can be connected to the guide rail 1240. In addition, the vertical axis fine-tuning member 1424 may also include a brake or stop for precisely fixing the vertical axis position of the independent display device 110.

[0200] Figure 15 The state of coupling between guide rail 1240 and vertical axis position adjustment component 1420 is shown.

[0201] Reference Figure 15 The guide rail 1240 is disposed on the rear surface of the rear cover 1220, and the vertical axis fine adjustment member 1424 is fastened to the guide rail 1240.

[0202] Reference Figure 15 The vertical axis position adjustment member 1420 can be coupled to the guide rail 1240 by moving from the upper side to the lower side of the independent display device 110. Alternatively, the vertical axis position adjustment member 1420 can be coupled to the guide rail 1240 by moving from the lower side to the upper side of the independent display device 110.

[0203] For example, if the bezel of the first width NA1 is located above the independent display device 110 and the bezel of the second width NA2 is located below the independent display device 110, when the vertical axis fine-tuning member 1424 is fastened to the guide rail 1240, the independent display device position adjustment member 1400 can be moved from the upper side to the lower side of the independent display device 110 and can be fastened to the guide rail 1240.

[0204] Figure 16The figure shows an embodiment in which the guide rail 1240 and the vertical axis fine-tuning member 1424 are implemented as slide rails.

[0205] Reference Figure 16 According to the embodiments of this disclosure, the guide rail 1240 and the vertical axis fine-tuning member 1424 can be configured as a general slide rail.

[0206] Reference Figure 16 The vertical axis fine-tuning component 1424 can move along the groove provided in the guide rail 1240.

[0207] The guide rail 1240 can be attached to the rear of the independent display device 110, so that the position of the vertical axis of the independent display device 110 can be adjusted.

[0208] The vertical axis fine-tuning member 1424 or guide rail 1240 may also include a brake or limiter for fixing the independent display device 110 to a precise position.

[0209] Figure 17 This is a diagram illustrating a horizontal frame 1730 configured to mount an independent display device 110.

[0210] Reference Figure 17 According to embodiments of the present disclosure, the large-area display device 100 can be implemented by mounting a plurality of independent display devices 110 on a horizontal frame 1730.

[0211] Reference Figure 17 You can set one or more horizontal boxes 1730.

[0212] The horizontal frame 1730 can be fixed to the wall 1710. A support member can be further provided between the wall 1710 and the horizontal frame 1730, the support member being configured to fix the horizontal frame 1730 to the wall 1710.

[0213] Reference Figure 17 The supporting member can be a support frame 1720. To more securely fix the horizontal frame 1730 to the wall 1710, a horizontal frame 1730 can be supported by two or more support frames 1720.

[0214] The support frame 1720 and the horizontal frame 1730 can be joined by, for example, welding. Alternatively, the support frame 1720 and the horizontal frame 1730 can be connected by separate fastening members or the like for easy separation and coupling.

[0215] Reference Figure 17 The support frame 1720 can support two or more horizontal frames 1730. If three or more horizontal frames 1730 are provided, the distance d3 between the horizontal frames 1730 can be the same.

[0216] The distance d3 between horizontal frames 1730 can be designed by considering the spacing between the overlapping areas of the independent display devices 110 in adjacent rows. The independent display devices 110 located in adjacent rows can be attached to the independent display device position adjustment member 1400 and mounted on the horizontal frame 1730 corresponding to the independent display device 110. By adjusting the position of the aforementioned vertical axis position adjustment member 1420 on the guide rail 1240, the vertically overlapping areas of the independent display devices 110 can be precisely adjusted.

[0217] If a horizontal frame 1730 is supported by two or more support frames 1720, the two or more support frames 1720 can be set apart from each other by a predetermined distance d4.

[0218] The distance d4 between the support frames 1720 can be set by considering the rigidity of the horizontal frame 1730, the weight of the independent display device 110 mounted on the horizontal frame 1730, and the area of ​​the independent display device 100 installed in the large-area display device 100. Figure 17 The illustration shows an embodiment in which a horizontal frame 1730 is supported by two support frames 1720, but the invention is not limited thereto.

[0219] The independent display device 110 can be attached to the independent display device position adjustment member 1400 and mounted on the horizontal frame 1730. By adjusting the position of the independent display device position adjustment member 1400, the amount of overlap between adjacent independent display devices 110 in the same row can be finely adjusted.

[0220] Figure 18 This is a diagram illustrating an example of a large-area display device driving system 1800 according to an embodiment of the present disclosure.

[0221] Reference Figure 18 According to the embodiments of the present disclosure, the large-area display device driving system 1800 can be constructed in such a way that a plurality of independent display devices 110 constituting the large-area display device 100 are arranged in a horizontal frame 1730.

[0222] Each of the plurality of independent display devices 110 overlaps with other independent display devices 110 in at least one direction in the vertical direction when mounted on the horizontal frame 1730. Each of the plurality of independent display devices 110 overlaps with other independent display devices 110 in at least one direction in the horizontal direction when mounted on the horizontal frame 1730.

[0223] Regarding the overlapping area of ​​the two independent display devices 110, the non-display area NA of the upper independent display device 110 can be positioned on the display area AA of the lower independent display device 110.

[0224] In the display area AA of the independent display device 110 that overlaps with the non-display area NA and is located on the lower side, only non-light-emitting pixels P are provided in the driving unit DU (for example, the pixels P covered in the seam area of the overlapping independent display device 110 can be controlled to remain off). Therefore, even if multiple independent display devices 110 are arranged to overlap each other, the image discontinuity caused by the seam area cannot be recognized.

[0225] In the large-area display device 100, multiple independent display devices 110 can be separated, and multiple independent display devices 110 can be stacked in a predetermined order. The pixels P for displaying an image in one driving unit DU can be set differently according to the order in which the independent display devices 110 are stacked.

[0226] To finely adjust the upper, lower, left, and right positions of the multiple independent display devices 110 in the large-area display device 100, each of the multiple independent display devices 110 can be coupled to the independent display device position adjustment member 1400 through the guide rail 1240. The horizontal position and vertical position of the independent display device 110 can be adjusted through the independent display device position adjustment member 1400.

[0227] In the large-area display device driving system 1800 according to an embodiment of the present disclosure, each of the independent display devices 110 can have a display area AA with a different area when viewed from the outside.

[0228] Refer to Figure 18 , regarding two overlapping independent display devices 110, the independent display device on the right is located above the independent display device on the left, and the independent display device on the lower side is located above the independent display device on the upper side.

[0229] Therefore, in Figure 18 , the area AA11 of the display area viewed by the upper-left independent display device is smaller than the area AA13 of the display area viewed by the upper-right independent display device (for example, AA11 < AA13). In addition, the area AA13 of the display area viewed by the upper-right independent display device is smaller than the area AA43 of the display area visually viewed by the lower-right independent display device (for example, AA13 < AA43). For example, the independent display devices 110 can be arranged similar to overlapping scales of a fish to provide a large and uniform display area for the large-area display device 100.

[0230] Refer to Figure 18 , the large-area display device driving system 1800 according to an embodiment of the present disclosure can display an image in a state where the horizontal frame 1730 is entirely accommodated in the first groove 1414.

[0231] Refer to Figure 18 The shape of the horizontal frame 1730 can be substantially the same as the shape of the first groove 1414, but it can also be different from the shape of the first groove 1414. If the shape of the horizontal frame 1730 is substantially the same as the shape of the first groove 1414, the independent display device 110 can be fixed at a specific angle.

[0232] The following is a brief description of how the present disclosure is implemented.

[0233] Embodiments of this disclosure may provide a large-area display device 100, including: a first independent display device (e.g., 110a) including a plurality of pixels P; and a second independent display device (e.g., 110c) including a plurality of pixels P and overlapping with the first independent display device 110a in an overlapping region, wherein the first independent display device 110a is driven such that the pixels P located in the overlapping region among the plurality of pixels P do not display an image, and wherein the second independent display device 110c drives the pixels P located in the overlapping region among the plurality of pixels P to display an image.

[0234] In embodiments of this disclosure, the first independent display device 110a and the second independent display device 110c can display an image by driving a pixel (e.g., Plu) in a driving unit DU comprising two or more pixels P, and in a driving unit DU, when any one of the two or more pixels P (e.g., Plu) emits light, the remaining pixels (e.g., Pru, Pld, Prd) other than one of the two or more pixels P, Plu, are controlled to not emit light.

[0235] In embodiments of this disclosure, the second independent display device 110c may include a narrow bezel having a first width (e.g., NA1), at least a portion of which overlaps with the first independent display device 110a, and the distance (e.g., d1) between two pixels P displaying images in adjacent driving units DU may be greater than or equal to the first width NA1.

[0236] In embodiments of this disclosure, the narrow bezel may be positioned to overlap with pixels in the drive unit DU that do not display images (e.g., Pld, Prd).

[0237] In embodiments of this disclosure, the large-area display device 100 may include a plurality of independent display devices 110, including a first independent display device 110a and a second independent display device 110c, wherein there are double-overlapping regions where two of the independent display devices 110 overlap each other and quadruple-overlapping regions where all four of the independent display devices 110 overlap each other.

[0238] In embodiments of this disclosure, the plurality of independent display devices 110 may be separable.

[0239] In embodiments of this disclosure, the large-area display device 100 may include a plurality of independent display devices 110, including a first independent display device 110a and a second independent display device 110c. The driving unit DU may include a top-left pixel Plu, a top-right pixel Pru, a bottom-left pixel Pld, and a bottom-right pixel Prd. The plurality of independent display devices 110 may include a top-left independent display device 110a located at the top left corner, a top-right independent display device 110b located at the top right corner, a bottom-left independent display device 110c located at the bottom left corner, and a bottom-right independent display device 110d located at the bottom right corner. The top-left independent display device 110a, the top-right independent display device 110b, the bottom-left independent display device 110c, and the bottom-right independent display device 110d may overlap each other.

[0240] In embodiments of this disclosure, when the upper left independent display device 110a of the overlapping independent display devices 110 is located at the bottom (lowest), the upper left pixel Plu can emit light in the driving unit DU.

[0241] In embodiments of this disclosure, when the upper right independent display device 110b of the overlapping independent display devices 110 is located at the bottom (lowest point), the upper right pixel Pru can emit light in the driving unit DU.

[0242] In embodiments of this disclosure, when the lower left independent display device 110c of the overlapping independent display devices 110 is located at the bottom, the lower left pixel Pld can emit light in the driving unit DU.

[0243] In embodiments of this disclosure, when the lower right independent display device 110d of the overlapping independent display devices 110 is located at the bottom, the lower right pixel Prd can emit light in the driving unit DU.

[0244] In embodiments of this disclosure, the narrow border located in the overlapping area may include a sloping surface 1210.

[0245] In embodiments of this disclosure, the first independent display device 110a and / or the second independent display device 110c may include a guide rail 1240 located on the rear side. In other words, the first independent display device 110a may include a first guide rail 1240 located on the rear side of the first independent display device 110a, and / or the second independent display device 110c may include a second guide rail 1240 located on the rear side of the second independent display device 110c.

[0246] In embodiments of this disclosure, the large-area display device 100 may include a plurality of independent display devices 110, the plurality of independent display devices 110 including a first independent display device 110a and a second independent display device 110c, wherein the plurality of independent display devices 110 may be arranged in a matrix manner including two or more rows and two or more columns.

[0247] In embodiments of this disclosure, the independent display devices 110 located at both ends of a row and at both ends of a column can have display areas of different sizes AA11 to AA43 when viewed from the outside. The outside can be the outside of a large-area display device, in other words, it does not overlap with the display device.

[0248] Embodiments of this disclosure may provide a large-area display device driving system 1800, including: a large-area display device 100, wherein a plurality of detachable individual display devices 110 are arranged to overlap each other; an individual display device position adjustment member 1400, which is configured to fix the position of each of the plurality of individual display devices 110; and a horizontal frame 1730 on which the individual display device position adjustment member 1400 is mounted.

[0249] In embodiments of this disclosure, each of the plurality of independent display devices 110 may include a rear-mounted guide rail 1240, wherein the independent display device position adjustment member 1400 may be coupled to the guide rail 1240.

[0250] In embodiments of this disclosure, the independent display device position adjustment member 1400 can be moved horizontally when mounted on the horizontal frame 1730.

[0251] In embodiments of this disclosure, each of the plurality of independent display devices 110 may include: a display area AA, wherein a driving unit DU comprising two or more pixels P is positioned; and a non-display area NA, wherein at least one border having a first width NA1 is positioned around the display area AA. Of the pixels P included in the driving unit DU, only one pixel P may emit light, while other pixels P covered by at least one other independent display device 110 may not emit light, and the distance between adjacent emitting pixels P in two different independent display devices 110 may be greater than or equal to the first width NA1.

[0252] In embodiments of this disclosure, the plurality of independent display devices 110 may include a first independent display device 110a and a second independent display device 110c configured to overlap each other in an overlapping region. The first independent display device 110a may be driven such that pixel P located in the overlapping region among two or more pixels P does not display an image, while the second independent display device 110c may drive pixel P located in the overlapping region among two or more pixels to display an image.

[0253] In embodiments of this disclosure, the pixel P that emits light in the driving unit DU may vary depending on the order in which the multiple independent display devices 110 are overlapped.

[0254] The above description has been presented to enable those skilled in the art to make and use the technical ideas of the invention, and the above description has been provided in the context of a particular application and its requirements. Various modifications, additions, and substitutions to the described embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of the invention. The above description and drawings provide examples of the technical ideas of the invention for illustrative purposes only. That is, the disclosed embodiments are intended to illustrate the scope of the technical ideas of the invention. Therefore, the scope of the invention is not limited to the embodiments shown, but is to be consistent with the widest scope consistent with the claims. The scope of protection of the invention should be interpreted based on the appended claims, and all technical ideas within the scope of their equivalents should be interpreted as being included within the scope of the invention.

Claims

1. A large-area display apparatus comprising: a first independent display apparatus including a plurality of first driving units each of which includes two or more adjacent first pixels; a second independent display apparatus including a plurality of second driving units each of which includes two or more adjacent second pixels and overlaps the first independent display apparatus in an overlapping area, and an integrated controller configured to control the first independent display apparatus and the second independent display apparatus such that only one of the pixels included in each of the plurality of first driving units and the plurality of second driving units emits light, wherein the second independent display apparatus partially overlaps a row or a column of the plurality of first driving units of the first independent display apparatus such that a first group of the first pixels in the row or the column of the first driving units overlaps the second independent display apparatus and a second group of the first pixels in the row or the column of the first driving units does not overlap the second independent display apparatus, and wherein the integrated controller is configured to control the first independent display apparatus such that the first group of the first pixels does not emit light and control only one of the pixels included in the second group of the first pixels in each of the first driving units in the row or the column of the first driving units to emit light.

2. The large-area display device according to claim 1, wherein the second independent display apparatus includes a narrow bezel having a first width, and at least a portion of the narrow bezel overlaps the first independent display apparatus, and wherein a distance between two pixels displaying images in adjacent driving units is greater than or equal to the first width.

3. The large area display device of claim 2, wherein, the narrow bezel is positioned to overlap pixels in the plurality of first driving units that do not display images.

4. The large area display device of claim 2, wherein, the narrow bezel located in the overlapping area includes an inclined surface.

5. The large area display device of claim 4, wherein, the first independent display apparatus includes a first guide rail located at a rear side of the first independent display apparatus, or the second independent display apparatus includes a second guide rail located at a rear side of the second independent display apparatus.

6. The large area display device of claim 4, wherein, the large-area display apparatus includes a plurality of independent display apparatuses configured to be separable from each other.

7. The large area display device according to claim 1, wherein, the large-area display apparatus includes a plurality of independent display apparatuses including at least the first independent display apparatus and the second independent display apparatus, wherein each driving unit includes an upper-left pixel, an upper-right pixel, a lower-left pixel, and a lower-right pixel, wherein the plurality of independent display apparatuses includes an upper-left independent display apparatus located at an upper-left corner of the large-area display apparatus, an upper-right independent display apparatus located at an upper-right corner of the large-area display apparatus, a lower-left independent display apparatus located at a lower-left corner of the large-area display apparatus, and a lower-right independent display apparatus located at a lower-right corner of the large-area display apparatus, and wherein the upper-left independent display apparatus, the upper-right independent display apparatus, the lower-left independent display apparatus, and the lower-right independent display apparatus overlap each other.

8. The large area display device according to claim 7, wherein, The upper-left independent display device is located at the bottom of the large-area display device, and an upper-left pixel of the upper-left independent display device is configured to emit light and is not overlapped by any of the upper-right independent display device, the lower-left independent display device, and the lower-right independent display device.

9. The large area display device of claim 7, wherein, The upper-right independent display device of the overlapped independent display devices is located at the bottom of the large-area display device, and an upper-right pixel of the upper-right independent display device is configured to emit light and is not overlapped by any of the upper-left independent display device, the lower-left independent display device, and the lower-right independent display device.

10. The large area display device of claim 7, wherein, The lower-left independent display device of the overlapped independent display devices is located at the bottom of the large-area display device, and a lower-left pixel of the lower-left independent display device is configured to emit light and is not overlapped by any of the upper-right independent display device, the upper-left independent display device, and the lower-right independent display device.

11. The large area display device according to claim 7, wherein, The lower-right independent display device of the overlapped independent display devices is located at the bottom of the large-area display device, and a lower-right pixel of the lower-right independent display device is configured to emit light and is not overlapped by any of the upper-right independent display device, the upper-left independent display device, and the lower-left independent display device.

12. The large area display device according to claim 1, wherein, The large-area display device includes a plurality of independent display devices, the plurality of independent display devices including the first independent display device and the second independent display device, a third independent display device, and a fourth independent display device, and The large-area display device includes two overlapped regions of the first independent display device to the fourth independent display device that overlap each other and four overlapped regions of the first independent display device, the second independent display device, the third independent display device, and the fourth independent display device that overlap each other.

13. The large area display device according to claim 1, wherein, The large-area display device includes a plurality of independent display devices, the plurality of independent display devices including the first independent display device and the second independent display device, and The plurality of independent display devices are arranged in a matrix including two or more rows and two or more columns.

14. The large area display device of claim 13, wherein, Independent display devices of the plurality of independent display devices located at opposite ends of a row or opposite ends of a column have different display area sizes viewed from the outside of the large-area display device.

15. A large-area display device driving system, comprising: The large-area display device according to claim 1, the large-area display device including a plurality of detachable independent display devices that overlap each other, the plurality of detachable independent display devices including the first independent display device and the second independent display device; An independent display device position adjustment member configured to fix a position of one or more of the plurality of detachable independent display devices; And A horizontal frame coupled to the independent display device position adjustment member.

16. The large area display device driving system of claim 15, wherein, Each of the plurality of detachable independent display devices includes a guide rail on a rear side of the detachable independent display device, The independent display device position adjusting member is coupled to the guide rail of each of the plurality of detachable independent display devices.

17. The large area display device driving system of claim 15, wherein, The independent display device position adjusting member is configured to be horizontally movable when mounted on the horizontal frame.

18. The large area display device driving system of claim 15, wherein, In the plurality of detachable independent display devices, pixels that emit light in a driving unit are different according to an order in which the plurality of detachable independent display devices overlap each other.

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