Display apparatus and method for controlling same

Abstract

This disclosed apparatus comprises: a first display module including a plurality of first pixels; a second display module including a plurality of second pixels, wherein the second display module is provided adjacent to the first display module with a boundary line interposed between the first display module and the second display module; and a control unit for controlling the plurality of first pixels and the plurality of second pixels on the basis of image data, wherein: the plurality of first pixels include first boundary pixels adjacent to the boundary line; the plurality of second pixels include second boundary pixels adjacent to the boundary line; the first boundary pixels and the second boundary pixels each include a plurality of light-emitting elements; the plurality of light-emitting elements include a first light-emitting element that is disposed at a first position closest to the boundary line and emits light of a first color, and a second light-emitting element that is disposed at a second position farther from the boundary line than the first position and emits light of a second color; and the control unit decreases the luminance of the first light-emitting element to be below a reference luminance of the first light-emitting element and increases the luminance of the second light-emitting element to be above a reference luminance of the second light-emitting element, both the reference luminances being determined on the basis of the image data.

Description

Display device and method of controlling the display device

[0001] The present disclosure relates to a display device capable of controlling the brightness of light-emitting elements included in pixels of a plurality of display modules and a control method of the display device.

[0002] Display devices can be divided into self-emissive displays, in which each pixel emits light by itself, and photoluminescent displays, which require a separate light source.

[0003] LCD (Liquid Crystal Display) is a typical water-emitting display, and it is structurally complex and has limitations in implementing a thin thickness because it requires a backlight unit that supplies light from the rear of the display panel, a liquid crystal layer that acts as a switch to allow / block light to pass through, and a color filter that changes the supplied light into the desired color.

[0004] On the other hand, self-luminous displays, which feature individual light-emitting elements at each pixel, eliminate the need for components like backlight units and liquid crystal layers, and can even omit color filters. This allows for structural simplicity and a high degree of design freedom. Furthermore, they can achieve a thin profile, as well as excellent contrast ratio, brightness, and viewing angles.

[0005] Among self-illuminating displays, micro LED displays consist of multiple micro-sized LEDs. Compared to LCDs, which require backlighting, micro LED displays offer superior contrast, superior response times, and superior energy efficiency.

[0006] Additionally, micro LEDs, which are inorganic light-emitting devices, are brighter, have better luminous efficiency, and have a longer lifespan than OLEDs, which require a separate encapsulation layer to protect the organic material.

[0007] Recently, technology has been developed to enlarge display devices by tiling display modules.

[0008] The present disclosure can provide a display device and a control method of the display device capable of compensating the brightness of each of a plurality of light-emitting elements included in pixels adjacent to a boundary between display modules.

[0009] The technical problems to be achieved in this document are not limited to the technical problems mentioned above, and other technical problems not mentioned can be clearly understood by a person having ordinary skill in the technical field to which the present invention belongs from the description below.

[0010] According to one embodiment of the present disclosure, a display device includes: a first display module including a plurality of first pixels; a second display module including a plurality of second pixels, the second display module being provided adjacent to the first display module with respect to a boundary line between the first display module and the second display module; and a control unit that controls the plurality of first pixels and the plurality of second pixels based on image data, wherein the plurality of first pixels include first boundary pixels adjacent to the boundary line, the plurality of second pixels include second boundary pixels adjacent to the boundary line, and each of the first boundary pixels and the second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element disposed at a first position closest to the boundary line and emitting light of a first color, and a second light-emitting element disposed at a second position further from the boundary line than the first position and emitting light of a second color, wherein the control unit can decrease a luminance of the first light-emitting element less than a reference luminance of the first light-emitting element determined based on the image data and increase a luminance of the second light-emitting element more than a reference luminance of the second light-emitting element determined based on the image data.

[0011] A method for controlling a display device according to an embodiment of the present disclosure comprises: a first display module including a plurality of first pixels and a second display module including a plurality of second pixels, wherein the second display module is provided adjacent to the first display module with a boundary line between the first display module and the second display module, the plurality of first pixels include first boundary pixels adjacent to the boundary line, the plurality of second pixels include second boundary pixels adjacent to the boundary line, and each of the first boundary pixels and the second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element disposed at a first position closest to the boundary line and emitting light of a first color, and a second light-emitting element disposed at a second position further from the boundary line than the first position and emitting light of a second color, the method comprising: controlling the plurality of first pixels and the plurality of second pixels based on image data; wherein controlling the plurality of first pixels and the plurality of second pixels based on the image data comprises: reducing the luminance of the first light-emitting element less than a reference luminance of the first light-emitting element determined based on the image data; and reducing the luminance of the second light-emitting element. It may include increasing the brightness more than the reference brightness of the second light-emitting element determined based on the image data.

[0012] According to the present disclosure, there is an effect of preventing the boundary between display modules from being visible by compensating the brightness of each of a plurality of light-emitting elements included in pixels adjacent to the boundary between display modules.

[0013] FIGS. 1, 2 and 3 are perspective views illustrating examples of a display module and a display device including the same according to one embodiment.

[0014] Figure 4 is a control block diagram of a display device according to one embodiment.

[0015] FIG. 5 is a control block diagram illustrating the configuration of a display module included in a display device according to one embodiment.

[0016] FIG. 6 is a diagram conceptually illustrating how each pixel is driven in a display module according to one embodiment.

[0017] FIG. 7 is a front view of a display device according to one embodiment, showing the arrangement of pixels.

[0018] FIG. 8 is an enlarged view of a display device showing the arrangement of pixels in a display device according to one embodiment.

[0019] Figure 9 is a drawing for explaining a case where a seam line is formed near a boundary line when the luminance of boundary pixels adjacent to the boundary line is not compensated.

[0020] Fig. 10 is a flowchart for explaining the sequence of a control method of a display device according to one embodiment.

[0021] Fig. 11 is a drawing showing a display device implemented by a plurality of display modules.

[0022] FIGS. 12 and 13 are drawings illustrating a method of tiling multiple display modules according to one embodiment.

[0023] FIG. 14 and FIG. 15 are drawings for explaining a method for minimizing the difference between the brightness of light incident on a plurality of display modules and the brightness of light passing through the plurality of display modules.

[0024] It should be understood that the various embodiments and terms used in this document are not intended to limit the technical features described in this document to specific embodiments, but rather to include various modifications, equivalents, or substitutes of the embodiments.

[0025] In connection with the description of the drawings, similar reference numerals may be used for similar or related components.

[0026] The singular form of a noun corresponding to an item may include one or more of said items, unless the relevant context clearly indicates otherwise.

[0027] In this document, each of the phrases "A or B", "at least one of A and B", "at least one of A or B", "A, B, or C", "at least one of A, B, and C", and "at least one of A, B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof.

[0028] The term "and / or" includes any combination of a plurality of related described elements or any one of a plurality of related described elements.

[0029] The terms "part," "module," and "member" may be implemented in hardware or software. Depending on the embodiments, multiple "parts," "modules," or "members" may be implemented as a single component, or a single "part," "module," or "member" may include multiple components.

[0030] Terms such as "first," "second," or "first" or "second" may be used simply to distinguish one component from another and do not qualify the components in any other respect (e.g., importance or order).

[0031] When a component (e.g., a first component) is referred to as being "coupled" or "connected" to another component (e.g., a second component), with or without the terms "functionally" or "communicatively," it means that the component can be connected to the other component directly (e.g., wired), wirelessly, or through a third component.

[0032] The terms "include" or "have" are intended to specify the presence of a feature, number, step, operation, component, part or combination thereof described in this document, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0033] When a component is said to be “connected,” “coupled,” “supported,” or “in contact with” another component, this includes not only cases where the components are directly connected, coupled, supported, or in contact, but also cases where the components are indirectly connected, coupled, supported, or in contact through a third component.

[0034] When we say that a component is "on" another component, this includes not only cases where the component is in contact with the other component, but also cases where there is another component between the two components.

[0035] Meanwhile, the terms "front", "back", "left", "right", "upper", "lower", etc. used in the following description are defined based on the drawing, but the shape and position of each component are not limited by the above terms. For example, the front side can be defined as the +X side, and the rear side can be defined as the -X side. For example, based on the drawing, the right side can be defined as the +Y side, and the left side can be defined as the -Y side. For example, based on the drawing, the upper side can be defined as the +Z side, and the lower side can be defined as the -Z side.

[0036] Hereinafter, embodiments according to the present invention will be described in detail with reference to the attached drawings.

[0037] FIGS. 1, 2 and 3 are perspective views illustrating examples of a display module and a display device including the same according to one embodiment.

[0038] Referring to FIGS. 1 and 2, the three-dimensional coordinate system of the XYZ axes illustrated in FIGS. 1 and 2 is based on the display device (1), the plane on which the screen of the display device (1) is located is the XZ plane, and the direction in which the image is output is the +Y direction.

[0039] When the display device (1) is in an erected state as shown in FIGS. 1 and 2, the -X to +X directions can be referred to as left-right directions, the -Z to +Z directions can be referred to as up-down directions, the +Y direction in which the image is output can be referred to as front, and the opposite direction can be referred to as rear.

[0040] A display device (1) according to one embodiment is a self-luminous display device in which light-emitting elements are arranged for each pixel, so that each pixel can emit light on its own. Therefore, unlike a liquid crystal display device, it does not require components such as a backlight unit or a liquid crystal layer, and thus can be made thin, and its simple structure allows for various design changes.

[0041] In addition, the display device (1) according to one embodiment may employ an inorganic light emitting element, such as an inorganic light emitting diode (ILD), as a light emitting element arranged in each pixel. Inorganic light emitting elements have a faster response speed than organic light emitting elements, such as an OLED (Organic Light Emitting Diode), and can implement high brightness with low power consumption.

[0042] In addition, unlike organic light-emitting diodes, which are vulnerable to moisture and oxygen exposure, require a sealing process, and have low durability, this device does not require a sealing process and is highly durable. Hereinafter, the light-emitting diodes mentioned in the following examples refer to inorganic light-emitting diodes.

[0043] The light-emitting element employed in the display device (1) according to one embodiment may be a micro LED having a short side length of about 100 μm, about tens of μm, or about several μm. In this way, by employing micro-unit LEDs, the pixel size can be reduced and high resolution can be implemented even within the same screen size.

[0044] Display devices employing micro LEDs can be applied to a variety of fields by taking advantage of their ultra-small pixel size and thin thickness. For example, as illustrated in FIGS. 1 and 2, a large-area screen can be implemented by tiling multiple display modules (10) onto which multiple micro LEDs are transferred. Such large-area display devices can be used as signage, electronic billboards, and the like.

[0045] In addition, the display device (1) according to one embodiment can implement various screen sizes by tiling a plurality of display modules (10) according to various numbers or various arrangements.

[0046] For example, as illustrated in FIG. 1, the display device (1) may include a plurality of display modules (10) tiled in the left-right direction (-X to +X direction).

[0047] For another example, as illustrated in FIG. 2, the display device (1) may include a plurality of first display modules (10a) and a plurality of second display modules (10b) tiled in the left-right direction (-X to +X direction) and the up-down direction (-Z to +Z direction).

[0048] Specifically, the display device (1) may include a plurality of first display modules (10a) and a plurality of second display modules (10b) each tiled in a left-right direction (-X to +X direction), and a plurality of second display modules (10b) tiled in a top-down direction (-Z to +Z direction) for each of the plurality of first display modules (10a).

[0049] According to FIG. 2, when a plurality of second display modules (10b) are tiled in the vertical direction (-Z to +Z direction) for each of a plurality of first display modules (10a), a boundary line (BL) may be formed between the plurality of first display modules (10a) and the plurality of second display modules (10b). When providing an image to a user, it is necessary to prevent the boundary line (BL) from being visible. A detailed description thereof will be provided later.

[0050] The display device (1) according to the present disclosure is not limited to that shown in FIGS. 1 and 2, and can form a screen in which an image is displayed in various sizes by tiling a plurality of display modules (10).

[0051] For example, unlike as illustrated in FIG. 1, a display device (1) according to one embodiment may include less than eight display modules (10) tiled only in the left-right direction (-X to +X direction), and may include more than eight display modules (10) tiled only in the left-right direction (-X to +X direction).

[0052] For another example, unlike as illustrated in FIG. 2, when a plurality of first display modules (10a) and a plurality of second display modules (10b) are tiled in the left-right direction (-X to +X direction) and the up-down direction (-Z to +Z direction), each of the plurality of first display modules (10a) and the plurality of second display modules (10b) of the display device (1) according to one embodiment may be less than 8 or more than 8.

[0053] Hereinafter, for convenience of explanation, a display device (1) according to one embodiment is described as having a plurality of first display modules (10a) and a plurality of second display modules (10b) tiled in the left-right direction (-X to +X direction) and the up-down direction (-Z to +Z direction).

[0054] Each of the plurality of first display modules (10a) and the plurality of second display modules (10b) includes a plurality of pixels, and each of the plurality of pixels may include a light-emitting element (120, see FIG. 5).

[0055] The light-emitting element (120) may include a red light-emitting element (120R, see FIG. 8), a green light-emitting element (120G, see FIG. 8), and / or a blue light-emitting element (120B, see FIG. 8).

[0056] Referring to FIG. 3, a display device (1) according to one embodiment can be implemented as a transparent display device. The transparent display device allows the user to view not only the image displayed on the transparent display device but also objects beyond the image by arranging circuit elements for image implementation on a transparent substrate.

[0057] A display device (1) according to one embodiment does not require a backlight unit, a liquid crystal layer, or an encapsulating layer, and only requires an ultra-small micro LED and a driving circuit and wiring for driving the same, so it is more advantageous in securing an aperture ratio, which is an important factor in implementing a transparent display device.

[0058] In the embodiment described below, it is assumed that the display device (1) is implemented as a transparent display device.

[0059] Figure 4 is a control block diagram of a display device according to one embodiment.

[0060] FIG. 5 is a control block diagram illustrating the configuration of a display module included in a display device according to one embodiment.

[0061] Referring to FIGS. 4 and 5, a display device (1) according to one embodiment may include a plurality of display modules (10), a control unit (300) that controls the plurality of display modules (10), a communication unit (430) that communicates with an external measuring device (450), a source input unit (440) that receives a source image, a speaker (410) that outputs sound, and an input unit (420) that receives a command for controlling the display device (1) from a user.

[0062] The input unit (420) may include a button or a touch pad provided in one area of ​​the display device (1), and when the display panel (100) is implemented as a touch screen, the input unit (420) may include a touch pad provided on the front of the display panel (100). In addition, the input unit (420) may also include a remote controller.

[0063] The input unit (420) can receive various commands from the user to control the display device (1), such as turning the display device (1) on / off, adjusting the volume, adjusting the channel, adjusting the screen, and changing various settings.

[0064] The speaker (410) can output sound based on the sound signal processed by the main controller (310) from the source signal received by the source input unit (440).

[0065] The communication unit (430) can communicate with a relay server or other electronic devices to send and receive necessary data. The communication unit (430) can adopt at least one of various wireless communication methods such as 3G (3rd Generation), 4G (4th Generation), wireless LAN, Wi-Fi, Bluetooth, Zigbee, WFD (Wi-Fi Direct), UWB (Ultra wideband), Infrared Data Association (IrDA), Bluetooth Low Energy (BLE), Near Field Communication (NFC), and Z-Wave. In addition, it is also possible to adopt a wired communication method such as PCI (Peripheral Component Interconnect), PCI-express, and USB (Universe Serial Bus).

[0066] The communication unit (430) can receive various data from an external measuring device (450). For example, the communication unit (430) can receive data regarding measured luminance.

[0067] The measured luminance may include the measured luminance of a pixel measured through an external measuring device (450). For example, the measured luminance may include the measured luminance of each of a plurality of pixels measured through the external measuring device (450).

[0068] Additionally, the measured luminance may include the measured luminance of the light emitting element (120) measured through an external measuring device (450). For example, the measured luminance may include the measured luminance of each of a plurality of light emitting elements (120) measured through the external measuring device (450).

[0069] That is, the measured luminance may include the measured luminance measured in pixel units of the display module (10) through an external measuring device (450), and may include the measured luminance measured in units of light-emitting elements (120) of the display module (10).

[0070] The communication unit (430) can transmit data regarding measured luminance to the main controller (310). The main controller (310) can transmit data regarding measured luminance to the luminance compensation unit (330).

[0071] The luminance compensation unit (330) can obtain information about the measured luminance based on data about the measured luminance. For example, the luminance compensation unit (330) can obtain the measured luminance of each of a plurality of pixels based on data about the measured luminance.

[0072] Additionally, the brightness compensation unit (330) can obtain the measured brightness of each of the plurality of light-emitting elements (120) based on data regarding the measured brightness.

[0073] Additionally, the luminance compensation unit (330) may include a memory (not shown) capable of storing information regarding measured luminance. For example, the luminance compensation unit (330) may store the measured luminance of each of a plurality of pixels and the measured luminance of each of a plurality of light-emitting elements (120).

[0074] The source input unit (440) can receive a source signal input from a set-top box, USB, antenna, etc. Accordingly, the source input unit (440) can include at least one selected from a group of source input interfaces including an HDMI cable port, a USB port, an antenna, etc.

[0075] The source signal received by the source input unit (440) can be processed by the main controller (310) and converted into a form that can be output by the display panel (100) and speaker (410).

[0076] The control unit (300) may include a main controller (310) that processes a source signal input through a source input unit (440) to generate image data corresponding to the input source signal, a timing controller (320) that processes image data transmitted from the main controller (310) and transmits the processed image data to each of a plurality of display modules (10), and / or a brightness compensation unit (330).

[0077] The main controller (310) can generate image data of a desired image quality through image quality correction using a source signal input through the source input unit (440).

[0078] The main controller (310) can separate the generated image data into image data corresponding to each of the plurality of display modules (10) and transmit the separated image data to the timing controller (320). For example, the main controller (310) can generate image data corresponding to a source signal, separate the image data into image data corresponding to each of the plurality of display modules (10), and transmit each of the separated image data to the timing controller (320) through a plurality of cables. The plurality of cables can include a DVI (Digital Visual Interface) cable, an LVDS (Low Voltage Differential Signals) cable, an HDMI (High Definition Multimedia Interface) cable, and / or an optical cable.

[0079] The timing controller (320) can process image data received from the main controller (310) to obtain pixel data.

[0080] Additionally, the main controller (310) can process image data to obtain pixel data and transmit the obtained pixel data to the timing controller (320).

[0081] Pixel data may include R color data, G color data, and / or B color data having gray levels according to gray scale.

[0082] When the gray scale is 256 gray scale, each of the R color data, G color data, and B color data can have a gray level from 0 to 255. In this case, the brightness of each light emitting element (120) can be adjusted in 256 steps.

[0083] For example, if the light-emitting element (120) is a red light-emitting element (120R, see FIG. 8), the R color data can have one gray level from 0 to 255, so that the brightness of the red light-emitting element (120R, see FIG. 8) can be adjusted in 256 steps.

[0084] For another example, if the light-emitting element (120) is a green light-emitting element (120G, see FIG. 8), the G color data can have one gray level from 0 to 255, so that the brightness of the green light-emitting element (120G, see FIG. 8) can be adjusted in 256 steps.

[0085] For another example, if the light-emitting element (120) is a blue light-emitting element (120B, see FIG. 8), the B color data can have one gray level from 0 to 255, so that the brightness of the blue light-emitting element (120B, see FIG. 8) can be adjusted in 256 steps.

[0086] Pixel data according to the present disclosure may include data having gray levels in various gray scales, as well as 256 gray scales. For example, if pixel data is implemented with 4 bits, the gray scale is 16 gray scales, and the pixel data may have one gray level from 0 to 15, so that the brightness of the light-emitting element (120) can be adjusted in 16 steps.

[0087] The larger the gray scale, the higher the gradation of the light-emitting element (120) corresponding to the pixel data.

[0088] The brightness compensation unit (330) can compensate for pixel data transmitted from the timing controller (320) to each of the plurality of display modules (10).

[0089] For example, the brightness compensation unit (330) can compensate for the R color data transmitted from the timing controller (320) to each of the plurality of display modules (10) to change the gray level of the R color data.

[0090] As another example, the luminance compensation unit (330) can compensate for the G color data transmitted from the timing controller (320) to each of the plurality of display modules (10) to change the gray level of the G color data.

[0091] As another example, the brightness compensation unit (330) can compensate for the B color data transmitted from the timing controller (320) to each of the plurality of display modules (10) to change the gray level of the B color data.

[0092] Each of the plurality of display modules (10) may include a display panel (100) that displays an image and a driver IC (200) that drives the display panel (100). Each of the plurality of display modules (10) may be a transparent display module for implementing a transparent display device.

[0093] The driver IC (200) can generate a driving signal that enables the display panel (100) to display an image based on pixel data transmitted from the timing controller (320).

[0094] The driving signal generated by the driver IC (200) may include a gate signal and a data signal, and the generated driving signal is input to the display panel (100).

[0095] The display panel (100) may include a pixel circuit (130) and a plurality of light-emitting elements (120). The plurality of light-emitting elements (120) may include a red light-emitting element (120R, see FIG. 8), a green light-emitting element (120G, see FIG. 8), and / or a blue light-emitting element (120B, see FIG. 8).

[0096] Each of the plurality of light-emitting elements (120) can be individually controlled by a pixel circuit (130), and each pixel circuit (130) can operate based on a driving signal output from a driver IC (200).

[0097] FIG. 6 is a diagram conceptually illustrating how each pixel is driven in a display module according to one embodiment.

[0098] Referring to FIG. 6, the driver IC (200) may include a scan driver (210) and a data driver (220). The scan driver (210) may output a gate signal for turning on / off the light-emitting element (120), and the data driver (220) may output a data signal for implementing an image.

[0099] The data driver (220) can generate a data signal based on pixel data transmitted from the timing controller (320).

[0100] The gate signal output from the scan driver (210) and the data signal output from the data driver (220) can be input to the pixel circuit (130).

[0101] For example, the gate voltage (V) in the pixel circuit (130) GATE ), data voltage (V DATA ) and power voltage (V DD ) is input, the pixel circuit (130) supplies a driving current (I) to drive the light emitting element (120). D ) can be printed.

[0102] Driving current (I) output from pixel circuit (130) D ) can be input to the light emitting element (120), and the light emitting element (120) can receive the input driving current (I D ) can be used to create images.

[0103] Driving current (I) output from pixel circuit (130) D ) can be determined based on pixel data. For example, the data driver (220) may apply a data voltage (V) to the pixel circuit (130) when the light-emitting element (120) is a red light-emitting element (120R, see FIG. 8). DATA ) is generated based on the R color data received from the timing controller (320), and the generated data voltage (V DATA ) is applied to the pixel circuit (130) connected to the red light-emitting element (120R, see Fig. 8) and the driving current (I) is supplied from the pixel circuit (130). D ) can be printed.

[0104] The pixel circuit (130) may include transistors (TR1, TR2) and a capacitor (Cst) that switch or drive the light-emitting element (120). As described above, the light-emitting element (120) may be a micro LED.

[0105] For example, the transistors (TR1, TR2) may include a switching transistor (TR1) and a driving transistor (TR2), and the switching transistor (TR1) and the driving transistor (TR2) may be implemented with at least one of a PMOS type transistor, an NMOS type transistor, or a CMOS type transistor.

[0106] Additionally, the transistors (TR1, TR2) may be thin-film transistors (TFTs). For example, the transistors (TR1, TR2) may be implemented with at least one of an a-Si TFT, a low-temperature poly silicon (LTPS) TFT, or an oxide TFT.

[0107] The gate electrode of the switching transistor (TR1) is connected to the scan driver (210), the source electrode is connected to the data driver (220), and the drain electrode is connected to one end of the capacitor (Cst) and the gate electrode of the driving transistor (TR2). The power supply voltage (V) is applied through the other end of the capacitor (Cst). DD ) may be authorized.

[0108] Additionally, the power supply voltage (V) is applied to the source electrode of the driving transistor (TR2). DD ) is applied, and the drain electrode is connected to the anode of the light emitting element (120). A reference voltage (V SS ) can be connected to the reference voltage (V SS ) is the power supply voltage (V DD ) as a voltage level lower than the ground voltage, etc. can be used to provide grounding.

[0109] The pixel circuit (130) of the above-described structure can operate as follows. First, the gate voltage (V) is supplied from the scan driver (210). GATE ) is applied and the switching transistor (TR1) is turned on, the data voltage (V) applied from the data driver (220) DATA ) is a capacitor (Cst ) can be transmitted to the gate electrode of the driving transistor (TR2).

[0110] Capacitor (C st ) by the gate-source voltage (V) of the driving transistor (TR2) GS ) can be maintained for a certain period of time. The driving transistor (TR2) is a gate-source voltage (V GS ) corresponding to the driving current (I D ) can be applied to the anode of the light-emitting element (120) to cause the light-emitting element (120) to emit light.

[0111] FIG. 7 is a front view of a display device according to one embodiment, showing the arrangement of pixels.

[0112] Referring to FIG. 7, as described above, the display device (1) may include a plurality of first display modules (10a) and a plurality of second display modules (10b).

[0113] The first display module (10a) and the second display module (10b) can be arranged adjacent to each other based on the boundary line (BL).

[0114] The first display module (10a) may be the same display module as the second display module (10b).

[0115] The display device (1) may include a first display module (10a) and a second display module (10b) obtained by rotating the first display module (10a) by 180 degrees.

[0116] That is, the second display module (10b) may be a display module that is the same as the first display module (10a) and is rotated 180 degrees with respect to the first display module (10a) and is symmetrically arranged with respect to the boundary line (BL) with respect to the first display module (10a).

[0117] Each of the plurality of first display modules (10a) may include a plurality of first pixels. The plurality of first pixels may include first border pixels (P11).

[0118] The first boundary pixels (P11) may be arranged adjacent to the boundary line (BL). For example, the first boundary pixels (P11) may be arranged in the first boundary area (GA1) adjacent to the boundary line (BL). The first boundary pixels (P11) may be arranged in the left-right direction (-X to +X direction) in the first boundary area (GA1) and may be arranged in one column.

[0119] The plurality of first pixels may include first internal area pixels (P12) arranged in a first internal area (IA1) adjacent to a first boundary area (GA1).

[0120] The first internal region pixels (P12) may be arranged in a two-dimensional array in the first internal region (IA1). For example, the first internal region pixels (P12) may be arranged in an M x N matrix in the first internal region (IA1). However, the arrangement of the first internal region pixels (P12) is not limited thereto and may be arranged in various positions in the first internal region (IA1).

[0121] The first boundary pixels (P11) and the first internal region pixels (P12) may be arranged in a vertical direction (-Z to +Z direction) with respect to the boundary line (BL). For example, each of the first boundary pixels (P11) may be arranged in one row with the first internal region pixels (P12). The vertical direction (-Z to +Z direction) with respect to the boundary line (BL) may mean the same direction as the up-down direction (-Z to +Z direction) described in FIGS. 1 and 2.

[0122] Each of the plurality of first display modules (10a) may include a first driver IC (200a) disposed in a first bezel area (BA1) adjacent to the first internal area (IA1).

[0123] The first driver IC (200a) can output a gate signal for turning on / off the light-emitting element (120) included in each of the plurality of first pixels, and can output a data signal based on pixel data received from the timing controller (320).

[0124] The first driver IC (200a) can perform both the functions of a scan driver (210, see FIG. 6) and a data driver (220, see FIG. 6).

[0125] The gate signal and data signal output from the first driver IC (200a) are transmitted to each of a plurality of pixel circuits (130), and the light-emitting element (120) connected to each of the pixel circuits (130) can emit light by the driving current output from the pixel circuit (130).

[0126] The first bezel area (BA1) may be formed on only one side of the first display module (10a). That is, among the four sides of the first display module (10a), the bezel area where no image is output may be formed on only one side.

[0127] As a result, an active area on which an image can be output can be formed on the remaining three sides of the four sides of the first display module (10a), thereby enabling a three-sided bezel-less image to be implemented.

[0128] Each of the plurality of second display modules (10b) may include a plurality of second pixels. The plurality of second pixels may include second border pixels (P21).

[0129] The second boundary pixels (P21) may be arranged adjacent to the boundary line (BL). For example, the second boundary pixels (P21) may be arranged in the second boundary area (GA2) adjacent to the boundary line (BL). The second boundary pixels (P21) may be arranged in the left-right direction (-X to +X direction) in the second boundary area (GA2) and may be arranged in one column.

[0130] The plurality of second pixels may include second internal area pixels (P22) arranged in a second internal area (IA2) adjacent to the second boundary area (GA2).

[0131] The second internal region pixels (P22) may be arranged in a two-dimensional array in the second internal region (IA2). For example, the second internal region pixels (P22) may be arranged in an M x N matrix in the second internal region (IA2). However, the arrangement of the second internal region pixels (P22) is not limited thereto and may be arranged in various positions in the second internal region (IA2).

[0132] The first boundary pixels (P11) and the first internal region pixels (P12) may be arranged in a vertical direction (-Z to +Z direction) with respect to the boundary line (BL). For example, each of the first boundary pixels (P11) may be arranged in one row with the first internal region pixels (P12).

[0133] Each of the plurality of second display modules (10b) may include a second driver IC (200b) arranged in a second bezel area (BA2) adjacent to the second internal area (IA2).

[0134] The second driver IC (200b) can output a gate signal for turning on / off the light emitting element (120) included in each of the plurality of second pixels, and can output a data signal based on pixel data received from the timing controller (320).

[0135] The second driver IC (200b) can perform both the functions of a scan driver (210, see FIG. 6) and a data driver (220, see FIG. 6).

[0136] The gate signal and data signal output from the second driver IC (200b) are transmitted to each of a plurality of pixel circuits (130), and the light-emitting element (120) connected to each of the pixel circuits (130) can emit light by the driving current output from the pixel circuit (130).

[0137] The second bezel area (BA2) may be formed on only one side of the second display module (10b). That is, among the four sides of the second display module (10b), the bezel area where no image is output may be placed on only one side.

[0138] As a result, an active area on which an image can be output can be formed on the remaining three sides of the four sides of the second display module (10b), thereby enabling a three-sided bezel-less image to be implemented.

[0139] FIG. 8 is an enlarged view of a display device showing the arrangement of pixels in a display device according to one embodiment.

[0140] Referring to FIG. 8, each of the plurality of first pixels may include a red light-emitting element (120R), a green light-emitting element (120G), and / or a blue light-emitting element (120B).

[0141] For example, each of the first boundary pixels (P11) may include a red light-emitting element (120R), a green light-emitting element (120G), and / or a blue light-emitting element (120B), and each of the first internal region pixels (P12) may also include a red light-emitting element (120R), a green light-emitting element (120G), and / or a blue light-emitting element (120B).

[0142] The red light-emitting element (120R) of each of the plurality of first pixels and the red light-emitting element (120R) of the adjacent first pixel can be arranged with a first red sub-pixel distance (DR).

[0143] For example, the red light-emitting element (120R) of the first boundary pixel (P11) and the red light-emitting element (120R) of the first internal region pixel (P12) adjacent to the first boundary pixel (P11) may be arranged with a first red sub-pixel distance (DR).

[0144] The green light-emitting element (120G) of each of the plurality of first pixels and the green light-emitting element (120G) of the adjacent first pixel can be arranged with a first green sub-pixel distance (DG).

[0145] For example, the green light-emitting element (120G) of the first boundary pixel (P11) and the green light-emitting element (120G) of the first internal region pixel (P12) adjacent to the first boundary pixel (P11) may be arranged with a first green sub-pixel distance (DG).

[0146] The blue light-emitting element (120B) of each of the plurality of first pixels and the blue light-emitting element (120B) of the adjacent first pixel can be arranged with a first blue sub-pixel distance (DB).

[0147] The blue light-emitting element (120B) of the first boundary pixel (P11) and the blue light-emitting element (120B) of the first internal region pixel (P12) adjacent to the first boundary pixel (P11) may be arranged with a first blue sub-pixel distance (DB).

[0148] The first red sub-pixel distance (DR), the first green sub-pixel distance (DG), and the first blue sub-pixel distance (DB) may be the same distance from each other.

[0149] Each of the plurality of first pixels can be arranged with a first pixel pitch (PP1) apart from the adjacent first pixels.

[0150] For example, a first boundary pixel (P11) and a first internal region pixel (P12) adjacent to the first boundary pixel (P11) may be arranged with a first pixel pitch (PP1). Specifically, the center of the first boundary pixel (P11) and the center of the first internal region pixel (P12) may be arranged with a first pixel pitch (PP1).

[0151] The blue light-emitting element (120B) of the first boundary pixel (P11) may be placed at a first position (L1) closest to the boundary line (BL). For example, the blue light-emitting element (120B) of the first boundary pixel (P11) may be placed at a first position (L1) whose distance to the boundary line (BL) is a first distance (D1).

[0152] The green light-emitting element (120G) of the first boundary pixel (P11) may be placed at a second position (L2) whose distance to the boundary line (BL) is greater than the first position (L1). For example, the green light-emitting element (120G) of the first boundary pixel (P11) may be placed at a second position (L2) whose distance to the boundary line (BL) is a second distance (D2) greater than the first distance (D1).

[0153] The red light-emitting element (120R) of the first boundary pixel (P11) may be positioned at a third position (L3) whose distance to the boundary line (BL) is greater than that of the second position (L2). For example, the red light-emitting element (120R) of the first boundary pixel (P11) may be positioned at a third position (L3) whose distance to the boundary line (BL) is a third distance (D3) greater than that of the second distance (D2).

[0154] Each of the plurality of second pixels may include a red light-emitting element (120R), a green light-emitting element (120G), and / or a blue light-emitting element (120B). For example, each of the second boundary pixels (P21) may include a red light-emitting element (120R), a green light-emitting element (120G), and / or a blue light-emitting element (120B). Each of the second internal region pixels (P22) may also include a red light-emitting element (120R), a green light-emitting element (120G), and / or a blue light-emitting element (120B).

[0155] The blue light-emitting element (120B) of the second boundary pixel (P21) may be placed at a first position (L1) closest to the boundary line (BL). For example, the blue light-emitting element (120B) of the second boundary pixel (P21) may be placed at a first position (L1) whose distance to the boundary line (BL) is a first distance (D1).

[0156] The green light-emitting element (120G) of the second boundary pixel (P21) may be positioned at a second position (L2) whose distance to the boundary line (BL) is greater than that of the first position (L1). For example, the green light-emitting element (120G) of the second boundary pixel (P21) may be positioned at a second position (L2) whose distance to the boundary line (BL) is a second distance (D2) greater than that of the first distance (D1).

[0157] The red light-emitting element (120R) of the second boundary pixel (P21) may be positioned at a third position (L3) whose distance to the boundary line (BL) is greater than the second position (L2). For example, the red light-emitting element (120R) of the second boundary pixel (P21) may be positioned at a third position (L3) whose distance to the boundary line (BL) is a third distance (D3) greater than the second distance (D2).

[0158] The blue light-emitting element (120B) of the first boundary pixel (P11) and the blue light-emitting element (120B) of the second boundary pixel (P21) may be arranged with a second blue sub-pixel distance (DB').

[0159] The second blue sub-pixel distance (DB') may be a smaller distance than the first blue sub-pixel distance (DB).

[0160] A seam (S) may be formed between the first display module (10a) and the second display module (10b). The present disclosure can provide a display device (1) in which the first boundary area (GA1) and the second boundary area (GA2) are positioned as close as possible to minimize the gap between the seams (S).

[0161] The first boundary pixel (P11) and the second boundary pixel (P21) may be arranged with a second pixel pitch (PP2). For example, the center of the first boundary pixel (P11) and the center of the second boundary pixel (P21) may be arranged with a second pixel pitch (PP2).

[0162] The second pixel pitch (PP2) may be a larger pitch than the first pixel pitch (PP1). For example, since a seam (S) is formed between the first boundary pixel (P11) and the second boundary pixel (P21), the second pixel pitch (PP2) may be a larger pitch than the first pixel pitch (PP1) due to the gap between the seams (S). However, if the first boundary area (GA1) and the second boundary area (GA2) are arranged as close as possible to minimize the gap between the seams (S), the first pixel pitch (PP1) and the second pixel pitch (PP2) may be the same pitch, but in the following description, the second pixel pitch (PP2) is described as a larger pitch than the first pixel pitch (PP1).

[0163] The green light-emitting element (120G) of the first boundary pixel (P11) and the green light-emitting element (120G) of the second boundary pixel (P21) can be arranged with a second green sub-pixel distance (DG').

[0164] Since the second pixel pitch (PP2) is a larger pitch than the first pixel pitch (PP1), the second green sub-pixel distance (DG') may be a larger distance than the first green sub-pixel distance (DG).

[0165] The red light-emitting element (120R) of the first boundary pixel (P11) and the red light-emitting element (120R) of the second boundary pixel (P21) may be arranged with a second red sub-pixel distance (DR').

[0166] The second red sub-pixel distance (DR') may be a greater distance than the first red sub-pixel distance (DR).

[0167] In summary, the distance between identical light-emitting elements of adjacent pixels included in each display module may be different from the distance between identical light-emitting elements of pixels adjacent to the boundary line (BL) (e.g., the first boundary pixel (P11) and the second boundary pixel (P21)). For example, the second blue sub-pixel distance (DB') may be a distance smaller than the first blue sub-pixel distance (DB), the second green sub-pixel distance (DG') may be a distance larger than the first green sub-pixel distance (DG), and the second red sub-pixel distance (DR') may be a distance larger than the first red sub-pixel distance (DR).

[0168] The display device (1) may include an aperture area (TA) adjacent to each of a plurality of first pixels and a plurality of second pixels. Since each of the light-emitting elements (120) may be composed of a micro LED, the ratio of the aperture area (TA) (aperture ratio or transmittance) can be maximized, thereby improving the quality of an image output through the transparent display device.

[0169] Figure 9 is a drawing for explaining a case where a seam line is formed near a boundary line when the luminance of boundary pixels adjacent to the boundary line is not compensated.

[0170] Referring to FIG. 9, as described above, the distance between identical light-emitting elements of adjacent pixels included in each display module may be different from the distance between identical light-emitting elements of pixels adjacent to the boundary line (BL), so if the luminance of pixels adjacent to the boundary line (BL) is not compensated, a seam line (SL) may be recognized near the boundary line (BL) due to luminance unevenness.

[0171] For example, if the second blue sub-pixel distance (DB') is a smaller distance than the first blue sub-pixel distance (DB), the distance between the blue light-emitting elements (120B) is relatively close to the boundary line (BL), so that the blue core line (SL) can be recognized in the image.

[0172] Therefore, it is necessary to compensate the luminance of the boundary pixels adjacent to the boundary line (BL) based on the luminance of the internal region pixels. Hereinafter, compensation of the luminance of the boundary pixels adjacent to the boundary line (BL) based on the luminance of the internal region pixels will be described in detail.

[0173] Fig. 10 is a flowchart for explaining the sequence of a control method of a display device according to one embodiment.

[0174] In one embodiment, the control unit (300) can control a plurality of first pixels and a plurality of second pixels based on image data.

[0175] The control unit (300) controlling a plurality of first pixels and a plurality of second pixels based on image data may include the main controller (310) obtaining image data corresponding to a source signal, the timing controller (320) processing the image data to obtain pixel data having a predetermined gray level, and transmitting the obtained pixel data to each of the display modules (10) to control the brightness of each of the plurality of light-emitting elements (120).

[0176] The blue light-emitting element (120B) may be referred to as a first light-emitting element, and the reference luminance of the blue light-emitting element (120B) may be referred to as a first reference luminance.

[0177] The green light-emitting element (120G) may be referred to as a second light-emitting element, and the reference luminance of the green light-emitting element (120G) may be referred to as a second reference luminance.

[0178] The red light-emitting element (120R) may be referred to as a third light-emitting element, and the reference luminance of the red light-emitting element (120R) may be referred to as a third reference luminance.

[0179] However, the first, second and third are not limited to the type of light-emitting element within the pixel or the order of light-emitting elements arranged within the pixel.

[0180] For example, if only a blue light-emitting element (120B) and a red light-emitting element (120R) are included in a pixel, the red light-emitting element (120R) may be referred to as a second light-emitting element, and the reference luminance of the red light-emitting element (120R) may be referred to as a second reference luminance.

[0181] For another example, when a red light-emitting element (120R) is placed at a second position (L2, see FIG. 8) and a green light-emitting element (120G) is placed at a third position (L3, see FIG. 8), the red light-emitting element (120R) may be referred to as a second light-emitting element, the reference luminance of the red light-emitting element (120R) may be referred to as a second reference luminance, the green light-emitting element (120G) may be referred to as a third light-emitting element, and the reference luminance of the green light-emitting element (120G) may be referred to as a third reference luminance.

[0182] However, for convenience of explanation, the blue light-emitting element (120B) is referred to as the first light-emitting element and the reference luminance of the blue light-emitting element (120B) is referred to as the first reference luminance, the green light-emitting element (120G) is referred to as the second light-emitting element and the reference luminance of the green light-emitting element (120G) is referred to as the second reference luminance, and the red light-emitting element (120R) is referred to as the third light-emitting element and the reference luminance of the red light-emitting element (120R) is referred to as the third reference luminance.

[0183] In various embodiments, the control unit (300) can decrease or increase the brightness of the light-emitting element (120) compared to a reference brightness of the light-emitting element (120) determined based on image data.

[0184] In one embodiment, the control unit (300) can reduce the brightness of the first light-emitting element (120B) compared to a first reference brightness of the first light-emitting element (120B) determined based on image data (1000).

[0185] For example, the control unit (300) can process image data to obtain B color data, determine the gray level of the B color data as the first reference brightness, and reduce the gray level of the B color data corresponding to the first light-emitting element (120B) of the first boundary pixels (P11) and the second boundary pixels (P21).

[0186] In one embodiment, the control unit (300) can increase the brightness of the second light-emitting element (120G) more than the second reference brightness of the second light-emitting element (120G) determined based on image data (1100).

[0187] For example, the control unit (300) can process image data to obtain G color data, determine the gray level of the G color data as the second reference luminance, and increase the gray level of the G color data corresponding to the second light-emitting elements (120G) of the first boundary pixels (P11) and the second boundary pixels (P21).

[0188] In one embodiment, the control unit (300) can increase the brightness of the third light-emitting element (120R) more than the third reference brightness of the third light-emitting element (120R) determined based on image data (1200).

[0189] For example, the control unit (300) can process image data to obtain R color data, determine the gray level of the R color data as the third reference brightness, and increase the gray level of the R color data corresponding to the third light-emitting element (120R) of the first boundary pixels (P11) and the second boundary pixels (P21).

[0190] In one embodiment, the control unit (300) can reduce the brightness of the first light-emitting element (120B) of the first boundary pixel (P11) by a first ratio compared to the first reference brightness.

[0191] The first ratio may be preset based on a first measured luminance of the first internal area pixel (P12) measured from an external measuring device (450, see FIG. 4) and a second measured luminance of the first light-emitting element (120B) of the first boundary pixel (P11) measured from the external measuring device (450). The first measured luminance may include a measured luminance corresponding to the first light-emitting element (120B) of the first internal area pixel (P12).

[0192] For example, if the second measured luminance is 1.2 times greater than the first measured luminance, the first ratio may be 1.2 times. Accordingly, in this case, the control unit (300) may reduce the gray scale of the B color data corresponding to the first light-emitting element (120B) of the first boundary pixels (P11) and the second boundary pixels (P21) by 1.2 times.

[0193] The first ratio can be preset to be proportional to the difference between the first measured luminance and the second measured luminance.

[0194] For example, the greater the difference between the first measured luminance and the second measured luminance, the greater the first ratio can be set, and accordingly, the control unit (300) can reduce the gray scale of the B color data corresponding to the first light-emitting element (120B) of the first boundary pixels (P11) and the second boundary pixels (P21) by the first ratio set to be greater as the difference between the first measured luminance and the second measured luminance increases.

[0195] In one embodiment, the control unit (300) can increase the brightness of the second light-emitting element (120G) of the first boundary pixel (P11) by a second ratio compared to the second reference brightness.

[0196] The second ratio may be preset based on a third measured luminance of the first internal area pixel (P12) measured from an external measuring device (450) and a fourth measured luminance of the second light-emitting element (120G) of the first boundary pixel (P11) measured from an external measuring device (450). The third measured luminance may include a measured luminance corresponding to the second light-emitting element (120G) of the first internal area pixel (P12).

[0197] For example, if the fourth measured luminance is 1.5 times smaller than the third measured luminance, the second ratio may be 1.5 times. Accordingly, in this case, the control unit (300) may increase the gray scale of the G color data corresponding to the second light-emitting element (120G) of the first boundary pixels (P11) and the second boundary pixels (P21) by 1.5 times.

[0198] The second ratio can be preset in proportion to the difference between the third measured luminance and the fourth measured luminance.

[0199] For example, the larger the difference between the third measured luminance and the fourth measured luminance, the larger the second ratio can be set, and accordingly, the control unit (300) can increase the gray scale of the G color data corresponding to the second light-emitting element (120G) of the first boundary pixels (P11) and the second boundary pixels (P21) by the second ratio set to be larger as the difference between the third measured luminance and the fourth measured luminance increases.

[0200] In one embodiment, the control unit (300) can increase the brightness of the third light-emitting element (120R) of the first boundary pixel (P11) by a third ratio compared to the third reference brightness.

[0201] The third ratio may be preset based on the fifth measured luminance of the first internal region pixel (P12) measured from the external measuring device (450) and the sixth measured luminance of the third light-emitting element (120R) of the first boundary pixel (P11) measured from the external measuring device (450). The fifth measured luminance may include the measured luminance corresponding to the third light-emitting element (120R) of the first internal region pixel (P12).

[0202] For example, if the sixth measured luminance is 1.7 times smaller than the fifth measured luminance, the third ratio may be 1.7 times. Accordingly, in this case, the control unit (300) may increase the gray scale of the R color data corresponding to the third light-emitting element (120R) of the first boundary pixels (P11) and the second boundary pixels (P21) by 1.7 times.

[0203] The third ratio can be preset in proportion to the difference between the fifth measured luminance and the sixth measured luminance.

[0204] For example, the larger the difference between the fifth measured luminance and the sixth measured luminance, the larger the third ratio can be set, and accordingly, the control unit (300) can increase the gray scale of the R color data corresponding to the third light-emitting element (120R) of the first boundary pixels (P11) and the second boundary pixels (P21) by the third ratio that is set to be large as the difference between the fifth measured luminance and the sixth measured luminance increases.

[0205] The third ratio can be set to be greater than the second ratio.

[0206] For example, the brightness of the third light-emitting element (120R) of the first boundary pixels (11) and the second boundary pixels (P21) can be increased at a greater rate than the brightness of the second light-emitting elements (120G) of the first boundary pixels (P11) and the second boundary pixels (P21).

[0207] Fig. 11 is a drawing showing a display device implemented by a plurality of display modules.

[0208] A display device (1) can be implemented by combining a plurality of display modules (10) according to the above-described embodiment.

[0209] As described above, each of the plurality of display modules (10) may include a driver IC (200) that drives a display panel (100). The driver IC (200) may be electrically connected to the display panel (100) by employing one of various bonding methods, such as COF (Chip on Film) or FOG (Film on Glass) bonding, COG (Chip on Glass) bonding, or TAB (Tape Automated Bonding).

[0210] For example, the display panel (100) can be connected to the FPCB through a film on which the driver IC (200) is mounted. The FPCB can be connected to the driving board (501) to electrically connect the display module (10) to the driving board (501).

[0211] A timing controller (320) may be provided on the driving board (501). Accordingly, the driving board (501) may also be referred to as a T-con board. A plurality of display modules (10) may receive various data from the driving board (501).

[0212] Additionally, the display device (1) may further include a main board (301) and a power board (601). A main controller (310) may be provided on the main board (301), and a power circuit necessary to supply power to a plurality of display modules (10) may be provided on the power board (601).

[0213] The power board (601) can be electrically connected to a plurality of display modules (10-1, 10-2, ..., 10-n) through an FPCB, and supplies a power voltage (V) to a plurality of display modules (10) connected through the FPCB. DD), reference voltage (Vss), and various operating power supplies can be supplied.

[0214] In the above example, it has been described that multiple display modules (10) share a driving board (501), but it is also possible for a separate driving board (501) to be connected to each individual display module (10). Alternatively, it is also possible to group multiple display modules (10) and connect one driving board (501) per group.

[0215] FIGS. 12 and 13 are drawings illustrating a method of tiling multiple display modules according to one embodiment.

[0216] Referring to FIGS. 12 and 13, a display device (1) according to one embodiment may include a transparent substrate (13), a first film layer (14), a first display module (10a), a second display module (10b), a resin layer (15), and / or a second film layer (16).

[0217] The transparent substrate (13) can be implemented as one of various substrates, such as a silicon substrate, a glass substrate, a plastic substrate, a PCB, an FPCB, a cavity substrate, etc. As long as it can be implemented transparently, there are no restrictions on the material.

[0218] The first film layer (14) may be placed on the upper surface of the transparent substrate (13). The first film layer (14) may include an OCA (Optically Clear Adhesive) type film to minimize the air gap between the transparent substrate (13) and the display module (10).

[0219] The first display module (10a) and the second display module (10b) can be placed on the first film layer (14).

[0220] The resin layer (15) is disposed between the first display module (10a) and the second display module (10b), and may also be disposed on the upper surface of the first display module (10a) and the upper surface of the second display module (10b). The resin layer (15) may include a resin for tiling the first display module (10a) and the second display module (10b).

[0221] The second film layer (16) may be placed on the upper surface of the resin layer (15). The second film layer (16) may include a low-reflection film to minimize reflection of light incident from the outside of the display device (1).

[0222] Referring to Fig. 13, conventionally, a resin layer (15) was placed only between display modules (10), so when a low-reflection film was attached on the display module (10), an air gap occurred between the display module (10) and the low-reflection film.

[0223] According to one embodiment, a display device (1), referring to FIG. 12, can prevent an air gap from occurring even when an anti-reflection film is attached on the display module (10) by flattening the resin layer (15) so that the area corresponding to the upper side of each display module (10) between the display modules (10) is formed at the same height.

[0224] FIG. 14 and FIG. 15 are drawings for explaining a method for minimizing the difference between the brightness of light incident on a plurality of display modules and the brightness of light passing through the plurality of display modules.

[0225] Referring to FIGS. 14 and 15, since the display device (1) is a transparent display device, it is necessary to maintain the brightness of light incident on the display device (1) and the brightness of light emitted from the display device (1) uniform.

[0226] Even if light of uniform brightness (A0=OB) is incident on the display device (1) in Fig. 14, light may be refracted by the resin layer (15) between the various components included in the display module (10) and the display module (10), and light having non-uniform brightness (CO'≠ O'D) may be emitted.

[0227] However, referring to Fig. 15, if the refractive index of the resin layer (15) is appropriately set, the difference between the brightness of light incident on the display device (1) and the brightness of light emitted from the display device (1) can be minimized.

[0228] For example, when the difference between the refractive index of the resin layer (15) and the reference refractive index (e.g., 1.51) is set between △n1 and △n2, the difference between the brightness of light incident on the display device (1) and the brightness of light emitted from the display device (1) can be minimized.

[0229] A display device according to the present disclosure comprises: a first display module including a plurality of first pixels; a second display module including a plurality of second pixels, wherein the second display module is provided adjacent to the first display module based on a boundary line between the first display module and the second display module; and a control unit that controls the plurality of first pixels and the plurality of second pixels based on image data, wherein the plurality of first pixels include first boundary pixels adjacent to the boundary line, the plurality of second pixels include second boundary pixels adjacent to the boundary line, and each of the first boundary pixels and the second boundary pixels includes a plurality of light-emitting elements, and the plurality of light-emitting elements include a first light-emitting element disposed at a first position closest to the boundary line and emitting light of a first color, and a second light-emitting element disposed at a second position further from the boundary line than the first position and emitting light of a second color, wherein the control unit can decrease a luminance of the first light-emitting element less than a reference luminance of the first light-emitting element determined based on image data and increase a luminance of the second light-emitting element more than a reference luminance of the second light-emitting element determined based on image data.

[0230] The first boundary pixels may form a first boundary region, and the plurality of first pixels may include first internal region pixels arranged in a first internal region adjacent to the first boundary region, and the second boundary pixels may form a second boundary region, and the plurality of second pixels may include second internal region pixels arranged in a second internal region adjacent to the second boundary region.

[0231] The first display module may include a first bezel region adjacent to the first internal region; and a first driver IC disposed in the first bezel region; and the second display module may include a second bezel region adjacent to the second internal region; and a second driver IC disposed in the second bezel region.

[0232] The first boundary pixels and the first internal region pixels may be arranged vertically such that the first boundary pixels are arranged between the boundary line and the first internal region pixels, and the second boundary pixels and the second internal region pixels may be arranged vertically such that the second boundary pixels are arranged between the boundary line and the second internal region pixels.

[0233] The control unit can decrease the brightness of the first light-emitting element by a first ratio compared to the reference brightness of the first light-emitting element and increase the brightness of the second light-emitting element by a second ratio compared to the reference brightness of the second light-emitting element.

[0234] The first ratio may be preset based on a first measured luminance of the first internal area pixels measured from an external measuring device and a second measured luminance of the first light-emitting element measured from the external measuring device, and the second ratio may be preset based on a third measured luminance of the first internal area pixels measured from the external measuring device and a fourth measured luminance of the second light-emitting element measured from the external measuring device.

[0235] The first ratio may be preset in proportion to the difference between the first measured luminance and the second measured luminance, and the second ratio may be preset in proportion to the difference between the third measured luminance and the fourth measured luminance.

[0236] The plurality of light-emitting elements may further include a third light-emitting element positioned at a third position further from the boundary line than the second position and emitting light of a third color.

[0237] The control unit may increase the brightness of the third light-emitting element by more than the reference brightness of the third light-emitting element determined based on the image data, decrease the brightness of the first light-emitting element by a first ratio compared to the reference brightness of the first light-emitting element, increase the brightness of the second light-emitting element by a second ratio compared to the reference brightness of the second light-emitting element, and increase the brightness of the third light-emitting element by a third ratio compared to the reference brightness of the third light-emitting element.

[0238] The third ratio may be greater than the second ratio.

[0239] The plurality of light-emitting elements may further include a third light-emitting element positioned at a third position, which is closer to the boundary line than the second position and farther from the boundary line than the first position, and which outputs light of a third color.

[0240] The control unit may increase the brightness of the third light-emitting element by more than the reference brightness of the third light-emitting element determined based on the image data, decrease the brightness of the first light-emitting element by a first ratio compared to the reference brightness of the first light-emitting element, increase the brightness of the second light-emitting element by a second ratio compared to the reference brightness of the second light-emitting element, and increase the brightness of the third light-emitting element by a third ratio compared to the reference brightness of the third light-emitting element.

[0241] The second ratio may be greater than the third ratio.

[0242] The second display module may have the same configuration as the first display module, and may be arranged so that its ends are in contact with the first display module, with a direction rotated 180 degrees around a front-back axis passing through the center of the second display module relative to the first display module. The first light-emitting element may be a blue light-emitting element, and the second light-emitting element may be a green light-emitting element or a red light-emitting element.

[0243] A control method of a display device according to the present disclosure comprises a first display module including a plurality of first pixels and a second display module including a plurality of second pixels, wherein the second display module is provided adjacent to the first display module with a boundary line between the first display module and the second display module, the plurality of first pixels include first boundary pixels adjacent to the boundary line, the plurality of second pixels include second boundary pixels adjacent to the boundary line, and each of the first boundary pixels and the second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element arranged at a first position closest to the boundary line and emitting light of a first color, and a second light-emitting element arranged at a second position further from the boundary line than the first position and emitting light of a second color, the control method comprising: controlling the plurality of first pixels and the plurality of second pixels based on image data; wherein controlling the plurality of first pixels and the plurality of second pixels based on the image data comprises: reducing the luminance of the first light-emitting element less than a reference luminance of the first light-emitting element determined based on the image data, and increasing the luminance of the second light-emitting element to a level greater than that of the image data. It may include increasing the reference brightness of the second light-emitting element determined based on the data;

[0244] The first boundary pixels may form a first boundary region, the plurality of first pixels may include first internal region pixels disposed in a first internal region adjacent to the first boundary region, the second boundary pixels may form a second boundary region, and the plurality of second pixels may include second internal region pixels disposed in a second internal region adjacent to the second boundary region.

[0245] The first display module may include a first bezel region adjacent to the first internal region; and a first driver IC disposed in the first bezel region; and the second display module may include a second bezel region adjacent to the second internal region; and a second driver IC disposed in the second bezel region.

[0246] The first boundary pixels and the first internal region pixels may be arranged vertically such that the first boundary pixels are arranged between the boundary line and the first internal region pixels, and the second boundary pixels and the second internal region pixels may be arranged vertically such that the second boundary pixels are arranged between the boundary line and the second internal region pixels.

[0247] Reducing the luminance of the first light-emitting element compared to the reference luminance of the first light-emitting element and increasing the luminance of the second light-emitting element compared to the reference luminance of the second light-emitting element may include reducing the luminance of the first light-emitting element by a first ratio compared to the first reference luminance and increasing the luminance of the second light-emitting element by a second ratio compared to the second reference luminance.

[0248] The first ratio may be preset based on a first measured luminance of the first internal area pixels measured from an external measuring device and a second measured luminance of the first light-emitting element measured from the external measuring device, and the second ratio may be preset based on a third measured luminance of the first internal area pixels measured from the external measuring device and a fourth measured luminance of the second light-emitting element measured from the external measuring device.

[0249] The first ratio may be preset in proportion to the difference between the first measured luminance and the second measured luminance, and the second ratio may be preset in proportion to the difference between the third measured luminance and the fourth measured luminance.

[0250] The plurality of light-emitting elements may further include a third light-emitting element positioned at a third position further from the boundary line than the second position and emitting light of a third color.

[0251] Reducing the luminance of the first light-emitting element from the first reference luminance and increasing the luminance of the second light-emitting element from the second reference luminance includes reducing the luminance of the first light-emitting element by a first ratio from the first reference luminance and increasing the luminance of the second light-emitting element by a second ratio from the second reference luminance; and may further include increasing the luminance of the third light-emitting element from the third reference luminance of the third light-emitting element determined based on image data, but increasing the luminance of the third light-emitting element by a third ratio from the third reference luminance.

[0252] The third ratio may be greater than the second ratio.

[0253] The plurality of light-emitting elements may further include a third light-emitting element positioned at a third position, which is closer to the boundary line than the second position and farther from the boundary line than the first position, and which outputs light of a third color.

[0254] Reducing the luminance of the first light-emitting element from the first reference luminance and increasing the luminance of the second light-emitting element from the second reference luminance includes reducing the luminance of the first light-emitting element by a first ratio from the first reference luminance and increasing the luminance of the second light-emitting element by a second ratio from the second reference luminance; and may further include increasing the luminance of the third light-emitting element from the third reference luminance of the third light-emitting element determined based on image data, but increasing the luminance of the third light-emitting element by a third ratio from the third reference luminance.

[0255] The second ratio may be greater than the third ratio.

[0256] The second display module may be a 180-degree rotated version of the first display module.

[0257] The first light-emitting element may be a blue light-emitting element, and the second light-emitting element may be a green light-emitting element or a red light-emitting element.

[0258] Meanwhile, the disclosed embodiments may be implemented in the form of a recording medium storing computer-executable instructions. The instructions may be stored in the form of program code, and when executed by a processor, may generate program modules to perform the operations of the disclosed embodiments. The recording medium may be implemented as a computer-readable recording medium.

[0259] Computer-readable storage media include all types of storage media that store instructions that can be deciphered by a computer. Examples include read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disks, flash memory, and optical data storage devices.

[0260] Additionally, a computer-readable recording medium may be provided in the form of a non-transitory storage medium. Here, the term "non-transitory storage medium" simply means a tangible device that does not contain signals (e.g., electromagnetic waves). This term does not distinguish between cases where data is permanently stored in the storage medium and cases where data is temporarily stored. For example, a "non-transitory storage medium" may include a buffer in which data is temporarily stored.

[0261] According to one embodiment, the method according to various embodiments disclosed in the present document may be provided as included in a computer program product. The computer program product may be traded as a product between a seller and a buyer. The computer program product may be distributed in the form of a machine-readable recording medium (e.g., compact disc read only memory (CD-ROM)), or may be distributed online (e.g., downloaded or uploaded) via an application store (e.g., Play Store™) or directly between two user devices (e.g., smartphones). In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable app) may be temporarily stored or temporarily generated on a machine-readable recording medium, such as the memory of a manufacturer's server, an application store's server, or an intermediary server.

[0262] The disclosed embodiments have been described with reference to the attached drawings as described above. Those skilled in the art will understand that the present invention can be implemented in forms other than the disclosed embodiments without altering the technical spirit or essential features of the present invention. The disclosed embodiments are illustrative and should not be construed as limiting.

Claims

1. A first display module comprising a plurality of first pixels; In a second display module including a plurality of second pixels, a second display module provided adjacent to the first display module with a boundary line between the first display module and the second display module; and A control unit for controlling the plurality of first pixels and the plurality of second pixels based on image data; The above plurality of first pixels include first boundary pixels adjacent to the boundary line, The above plurality of second pixels include second boundary pixels adjacent to the boundary line, Each of the first boundary pixels and the second boundary pixels includes a plurality of light-emitting elements, The above plurality of light-emitting elements include a first light-emitting element positioned closest to the boundary line and emitting light of a first color, and a second light-emitting element positioned at a second position further from the boundary line than the first position and emitting light of a second color. The above control unit, A display device that reduces the brightness of the first light-emitting element by more than the reference brightness of the first light-emitting element determined based on the image data, and increases the brightness of the second light-emitting element by more than the reference brightness of the second light-emitting element determined based on the image data.

2. In paragraph 1, The above first boundary pixels form a first boundary area, The above plurality of first pixels are, comprising first internal region pixels arranged in a first internal region adjacent to the first boundary region; The above second boundary pixels form a second boundary area, The above plurality of second pixels are, A display device comprising second internal region pixels arranged in a second internal region adjacent to the second boundary region.

3. In paragraph 2, The above first display module, a first bezel region adjacent to the first inner region; and A first driver IC disposed in the first bezel area; The above second display module, a second bezel area adjacent to the second inner area; and A display device including a second driver IC disposed in the second bezel area.

4. In paragraph 2, The first boundary pixels and the first internal region pixels are arranged vertically so that the first boundary pixels are arranged between the boundary line and the first internal region pixels, A display device wherein the second boundary pixels and the second internal region pixels are arranged vertically so that the second boundary pixels are arranged between the boundary line and the second internal region pixels.

5. In paragraph 2, The above control unit, The brightness of the first light-emitting element is reduced by a first ratio compared to the reference brightness of the first light-emitting element, and the brightness of the second light-emitting element is increased by a second ratio compared to the reference brightness of the second light-emitting element. The first ratio is preset based on a first measured luminance of the first internal area pixels measured from an external measuring device and a second measured luminance of the first light-emitting element measured from the external measuring device, A display device wherein the second ratio is preset based on a third measured luminance of the first internal area pixels measured from the external measuring device and a fourth measured luminance of the second light-emitting element measured from the external measuring device.

6. In paragraph 5, The above first ratio is preset in proportion to the difference between the first measured luminance and the second measured luminance, A display device wherein the second ratio is preset in proportion to the difference between the third measured luminance and the fourth measured luminance.

7. In paragraph 1, The above plurality of light emitting elements are, It further includes a third light-emitting element that is positioned at a third position further from the boundary line than the second position and outputs light of a third color, The above control unit, The brightness of the third light-emitting element is increased more than the reference brightness of the third light-emitting element determined based on the image data, The luminance of the first light-emitting element is reduced by a first ratio compared to the reference luminance of the first light-emitting element, the luminance of the second light-emitting element is increased by a second ratio compared to the reference luminance of the second light-emitting element, and the luminance of the third light-emitting element is increased by a third ratio compared to the reference luminance of the third light-emitting element. A display device having a third ratio greater than the second ratio.

8. In paragraph 1, The above plurality of light emitting elements are, It further includes a third light-emitting element that is positioned at a third position, the distance to the boundary line being closer than the second position and the distance to the boundary line being further than the first position, and that outputs light of a third color. The above control unit, The brightness of the third light-emitting element is increased more than the third reference brightness of the third light-emitting element determined based on the image data, The luminance of the first light-emitting element is reduced by a first ratio compared to the reference luminance of the first light-emitting element, the luminance of the second light-emitting element is increased by a second ratio compared to the reference luminance of the second light-emitting element, and the luminance of the third light-emitting element is increased by a third ratio compared to the reference luminance of the third light-emitting element. A display device wherein the second ratio is greater than the third ratio.

9. In paragraph 1, The above second display module, Having the same configuration as the above first display module, A display device having a direction rotated 180 degrees with respect to a front-back axis passing through the center of the second display module with respect to the first display module, and arranged so that the ends are in contact with the first display module.

10. In paragraph 1, A display device wherein the first light-emitting element is a blue light-emitting element and the second light-emitting element is a green light-emitting element or a red light-emitting element.

11. A method for controlling a display device, comprising: a first display module including a plurality of first pixels; and a second display module including a plurality of second pixels, wherein the second display module is provided adjacent to the first display module with a boundary line between the first display module and the second display module; wherein the plurality of first pixels include first boundary pixels adjacent to the boundary line; wherein the plurality of second pixels include second boundary pixels adjacent to the boundary line; and wherein each of the first boundary pixels and the second boundary pixels includes a plurality of light-emitting elements; wherein the plurality of light-emitting elements include a first light-emitting element disposed at a first position closest to the boundary line and emitting light of a first color; and a second light-emitting element disposed at a second position further from the boundary line than the first position and emitting light of a second color. Controlling the plurality of first pixels and the plurality of second pixels based on image data; Controlling the plurality of first pixels and the plurality of second pixels based on the image data, A control method for a display device, comprising: decreasing the brightness of the first light-emitting element less than the reference brightness of the first light-emitting element determined based on the image data; and increasing the brightness of the second light-emitting element more than the reference brightness of the second light-emitting element determined based on the image data.

12. In paragraph 11, The above first boundary pixels form a first boundary area, The above plurality of first pixels are, comprising first internal region pixels arranged in a first internal region adjacent to the first boundary region; The above second boundary pixels form a second boundary area, The above plurality of second pixels are, A control method for a display device including second internal region pixels arranged in a second internal region adjacent to the second boundary region.

13. In paragraph 12, The above first display module, a first bezel region adjacent to the first inner region; and Including a first driver IC arranged in the first bezel area, The above second display module, Including a second bezel area adjacent to the second inner area, A control method for a display device including a second driver IC disposed in the second bezel area.

14. In paragraph 12, The first boundary pixels and the first internal region pixels are arranged vertically so that the first boundary pixels are arranged between the boundary line and the first internal region pixels, A control method for a display device, wherein the second boundary pixels and the second internal region pixels are arranged in a vertical direction so that the second boundary pixels are arranged between the boundary line and the second internal region pixels.

15. In paragraph 12, Reducing the brightness of the first light-emitting element compared to the reference brightness of the first light-emitting element and increasing the brightness of the second light-emitting element compared to the reference brightness of the second light-emitting element is reducing the brightness of the first light-emitting element by a first ratio compared to the reference brightness of the first light-emitting element and increasing the brightness of the second light-emitting element by a second ratio compared to the reference brightness of the second light-emitting element; The first ratio is preset based on a first measured luminance of the first internal area pixels measured from an external measuring device and a second measured luminance of the first light-emitting element measured from the external measuring device, A control method for a display device, wherein the second ratio is preset based on a third measured luminance of the first internal area pixels measured from the external measuring device and a fourth measured luminance of the second light-emitting element measured from the external measuring device.

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