Display apparatus and control method thereof

Abstract

The display apparatus includes a first display module including a plurality of first pixels, a second display module including a plurality of second pixels, where the second display module is disposed adjacent to the first display module, where a boundary line is interposed between the first display module and the second display module, and a control unit. The control unit is configured to control a plurality of first pixels and a plurality of second pixels based on image data, in which: the plurality of first pixels includes a first boundary pixel adjacent to a boundary line, and the plurality of second pixels includes a second boundary pixel adjacent to the boundary line; the first boundary pixel and each second boundary pixel each include a first light emitting element arranged at a first position closest to the boundary line and a second light emitting element arranged at a second position farther from the boundary line than the first position; and the control unit reduces the brightness of the first light-emitting element to be lower than a reference brightness of the first light-emitting element and increases the brightness of the second light-emitting element to be higher than the reference brightness of the second light-emitting element, the two reference illuminations being determined based on the image data.

Description

Technical Field

[0001] This disclosure relates to a display device and a control method thereof that can control the brightness of light-emitting elements included in pixels of multiple display modules. Background Technology

[0002] Display devices can be divided into self-emissive displays where each pixel emits its own light, and light-receiving displays that require a separate light source.

[0003] As a representative light-receiving display, a liquid crystal display (LCD) includes a backlight unit for providing light from the back of the display panel, a liquid crystal layer that acts as a switch to allow / block light, and a color filter for changing the provided light into a desired color. Therefore, LCDs have a complex structure and limited implementation options (e.g., small thickness).

[0004] On the other hand, self-luminous displays, where each pixel emits its own light by including a light-emitting element for each pixel, do not require components such as a backlight unit and a liquid crystal layer, and can eliminate the need for color filters. Therefore, self-luminous displays can have a simple structure and high design freedom. Self-luminous displays can also achieve thinness as well as excellent contrast, brightness, and viewing angle.

[0005] In self-emissive displays, micro-light-emitting diode (LED) displays comprise multiple miniature LEDs. Compared to LCDs, which require backlighting, micro-LED displays can offer superior contrast, response time, and energy efficiency.

[0006] Furthermore, compared to OLEDs, which require a separate encapsulation layer to protect the organic materials, micro-LEDs, as inorganic light-emitting elements, are brighter, have better luminous efficiency, and have a longer lifespan.

[0007] Recently, technology is being developed to expand display devices by tiling display modules. Summary of the Invention

[0008] Technical issues

[0009] One aspect of this disclosure is to provide a display device that can compensate the brightness of each of a plurality of light-emitting elements included in pixels adjacent to a boundary line between display modules, and a method for controlling the display device.

[0010] The technical aspects that can be implemented through this disclosure are not limited to those described above, and other technical aspects not mentioned will be clearly understood by those skilled in the art to which this disclosure pertains from the following description.

[0011] Technical solution

[0012] According to an embodiment of this 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 and arranged adjacent to the first display module, with a boundary line between the first display module and the second display module; and a controller configured to control the plurality of first pixels and the plurality of second pixels based on image data, wherein the plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line, the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line, each of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element and a second light-emitting element, the first light-emitting element being arranged at a first position closest to the boundary line and configured to output light of a first color, the second light-emitting element being arranged at a second position further away from the boundary line than the first position and configured to output light of a second color, and the controller being configured to reduce the brightness of the first light-emitting element to below a reference brightness of the first light-emitting element determined based on the image data, and increase the brightness of the second light-emitting element to above a reference brightness of the second light-emitting element determined based on the image data.

[0013] According to embodiments of this disclosure, a method for controlling a display device is provided. The display device includes: a first display module including a plurality of first pixels; and a second display module including a plurality of second pixels and arranged 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 includes a plurality of first boundary pixels adjacent to the boundary line, and the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line. Each of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element and a second light-emitting element. The first light-emitting element is arranged at a first position closest to the boundary line and configured to output light of a first color, and the second light-emitting element is arranged at a second position further away from the boundary line than the first position and configured to output light of a second color. The method includes controlling the plurality of first pixels and the plurality of second pixels based on image data, including reducing the brightness of the first light-emitting element to below a reference brightness of the first light-emitting element determined based on the image data, and increasing the brightness of the second light-emitting element to above a reference brightness of the second light-emitting element determined based on the image data.

[0014] Beneficial effects

[0015] According to this disclosure, the boundary line between display modules can be prevented from being visible by compensating for the brightness of each of the plurality of light-emitting elements included in the pixels adjacent to the boundary line between display modules. Attached Figure Description

[0016] Figure 1 , Figure 2 and Figure 3 This is a perspective view illustrating an example of a display module and a display device including the display module according to an embodiment of the present disclosure.

[0017] Figure 4 This is a control block diagram of a display device according to an embodiment of the present disclosure.

[0018] Figure 5 This is a control block diagram specifically illustrating the configuration of a display module included in a display device according to embodiments of the present disclosure.

[0019] Figure 6 This is a diagram used to conceptually illustrate how each pixel is driven in a display module according to embodiments of the present disclosure.

[0020] Figure 7 This is a front view of a display device illustrating an example of the arrangement of pixels in a display device according to an embodiment of the present disclosure.

[0021] Figure 8 This is an enlarged view illustrating an example of the arrangement of pixels in a display device according to an embodiment of the present disclosure.

[0022] Figure 9 This is a diagram illustrating an example of a seam line formed near a boundary line without compensating for the brightness of the boundary pixels adjacent to the boundary line.

[0023] Figure 10 This is a flowchart of a method for controlling a display device according to an embodiment of the present disclosure.

[0024] Figure 11 This is a diagram illustrating a display device implemented by a plurality of display modules according to an embodiment of the present disclosure.

[0025] Figure 12 and Figure 13 This is a diagram illustrating a method of tiling multiple display modules according to embodiments of the present disclosure.

[0026] Figure 14 and Figure 15 This is a diagram illustrating a method for minimizing the difference between the brightness of light incident on multiple display modules and the brightness of light passing through the multiple display modules. Detailed Implementation

[0027] The various embodiments and the terminology used therein are not intended to limit the technology disclosed herein to a particular form, and this disclosure should be understood to include various modifications, equivalents and / or substitutions to the respective embodiments.

[0028] When describing the accompanying drawings, similar reference numerals may be used to denote similar constituent elements.

[0029] Unless otherwise stated in this document or clearly contradicted by the context, singular expressions may include plural expressions.

[0030] The expressions “A or B”, “at least one of A and / or B”, “one or more of A and / or B”, “A, B or C”, “at least one of A, B or / or C”, or “one or more of A, B or / or C” as used herein may include any and all combinations of one or more of the associated listed items.

[0031] The term “and / or” includes a combination of related items or any one of the related items.

[0032] The terms “unit,” “module,” and “component” can be implemented in hardware or software. Depending on the embodiment, multiple “units,” “modules,” or “components” may be implemented as a single element, or a single “unit,” “module,” or “component” may include multiple elements.

[0033] Here, the terms “first,” “second,” “first,” “second,” etc., may be used only to distinguish one element from other elements, but are not limited to other aspects of the elements (e.g., importance or order).

[0034] When a component (e.g., a first component) is referred to as being “(functionally or communicatively) coupled” or “connected” to another component (e.g., a second component), the first component may be connected to the second component directly (e.g., wired), wirelessly, or via a third component.

[0035] In this disclosure, the terms "comprising," "having," etc., are used to specify features, numbers, steps, operations, elements, components, or combinations thereof, but do not exclude the presence or addition of one or more features, numbers, steps, operations, elements, components, or combinations thereof.

[0036] When a component is referred to as being “connected,” “coupled,” “supported,” or “in contact” with another component, this includes not only cases where the component is directly connected, coupled, supported, or in contact, but also cases where the component is indirectly connected, coupled, supported, or in contact through a third component.

[0037] Throughout the specification, when one component is "on" another component, this includes not only the case where the component is in contact with the other component, but also the case where there is another component between the two components.

[0038] Furthermore, the terms "front," "rear," "left," "right," "top," and "bottom" used in the following description are defined based on the accompanying drawings, and the shape and position of each component are not limited by these terms. For example, the front side can be defined as the +X side, and the rear side as the -X side. For example, based on the accompanying drawings, the right side can be defined as the +Y side, and the left side as the -Y side. For example, based on the accompanying drawings, the top side can be defined as the +Z side, and the bottom side can be defined as the -Z side.

[0039] Various embodiments of this disclosure will be described in detail below with reference to the accompanying drawings.

[0040] Figure 1 , Figure 2 and Figure 3 This is a perspective view illustrating an example of a display module and a display device including the display module according to an embodiment.

[0041] refer to Figure 1 and Figure 2 , Figure 1 and Figure 2 The three-dimensional coordinate system of the XYZ axes is based on display device 1, and the plane in which the screen of display device 1 is located is the XZ plane, and the direction of the output image is the +Y direction.

[0042] like Figure 1 and Figure 2 As shown, when the display device 1 is in an upright position, the -X to +X direction can be called the left-right direction, the -Z to +Z direction can be called the up-down direction, the +Y direction of the output image can be called the front, and the opposite direction can be called the back.

[0043] The display device 1 according to the embodiment is a self-emissive display device with pixels, each pixel including a light-emitting element disposed therein to emit light by itself. Therefore, unlike liquid crystal display devices, this display device does not require components such as backlight units and liquid crystal layers, thereby achieving thinness, having a simple structure, and allowing for various design changes.

[0044] Furthermore, the display device 1 according to the embodiment may employ inorganic light-emitting elements, such as inorganic light-emitting diodes (LEDs), for the light-emitting elements arranged in each pixel. Compared with organic light-emitting elements, such as organic LEDs (OLEDs), inorganic light-emitting elements have a fast response speed and can achieve high brightness with low power consumption.

[0045] Furthermore, unlike organic light-emitting elements (LEDs), which are susceptible to exposure to water and oxygen, require packaging processes, and have weak durability, inorganic LEDs are highly durable and do not require packaging processes. In the following embodiments, the inorganic LEDs described refer to inorganic LEDs.

[0046] The light-emitting element used in the display device 1 according to the embodiment can be a micro LED, whose short side has a size of approximately 100 μm, tens of μm, or several μm. By using micro-sized LEDs, the pixel size can be reduced and high resolution can be achieved within a screen of the same size.

[0047] Display devices using microLEDs can be applied to various fields by utilizing ultra-small pixel sizes and extremely thin designs. For example, such as Figure 1 and Figure 2 As shown, a large screen can be realized by tiling and transferring multiple display modules 10 with multiple micro LEDs, and the large screen display device can be used as a sign, billboard, etc.

[0048] Furthermore, the display device 1 according to the embodiment can achieve various screen sizes by tiling multiple display modules 10 in various numbers or arrangements.

[0049] For example, such as Figure 1 As shown, the display device 1 may include a plurality of display modules 10 tiled along the left-right direction (from -X to +X).

[0050] In another example, such as Figure 2 As shown, the display device 1 may include a plurality of first display modules 10a and a plurality of second display modules 10b that are tiled along the left-right direction (-X to +X direction) and along the up-down direction (-Z to +Z direction).

[0051] Specifically, the display device 1 may include a plurality of first display modules 10a tiled along the left-right direction (-X to +X direction) and a plurality of second display modules 10b tiled along the left-right direction (-X to +X direction), wherein for each of the plurality of first display modules 10a, each of the plurality of second display modules 10b is tiled along the up-down direction (-Z to +Z direction).

[0052] like Figure 2 As shown, when multiple second display modules 10b are tiled along the vertical direction (-Z to +Z direction) for each of multiple first display modules 10a, a boundary line BL can be formed between the multiple first display modules 10a and the multiple second display modules 10b. To provide an image to the user, it is necessary to prevent the boundary line BL from being visible, which will be described in detail later.

[0053] The display device 1 according to this disclosure is not limited to Figure 1 and Figure 2 The ones shown can be used to form screens that display images in various sizes by tiling multiple display modules 10.

[0054] For example, in the case where multiple display modules 10 are tiled only along the left-right direction (-X to +X direction), and Figure 1 Unlike the previous embodiment, the display device 1 may include eight or fewer display modules 10 tiled only along the left-right direction (-X to +X direction), and may also include eight or more display modules 10 tiled only along the left-right direction (-X to +X direction).

[0055] In another example, when multiple first display modules 10a and multiple second display modules 10b are tiled along the left-right direction (-X to +X direction) and the up-down direction (-Z to +Z direction), with Figure 2 As shown, according to the embodiment, the number of the plurality of first display modules 10a and the plurality of second display modules 10b in the display device 1 may be less than eight or more than eight.

[0056] In the following description, for ease of description, the display device 1 according to the embodiment is described as including a plurality of first display modules 10a and a plurality of second display modules 10b tiled along the left-right direction (-X to +X direction) and the up-down direction (-Z to +Z direction).

[0057] The plurality of first display modules 10a and the plurality of second display modules 10b may each include a plurality of pixels, and each of the plurality of pixels may include a light-emitting element 120 (see Figure 5 ).

[0058] The light-emitting element 120 may include a red light-emitting element 120R (see Figure 8 ), Green light-emitting element 120G (see) Figure 8 ) and / or blue light-emitting element 120B (see Figure 8 ).

[0059] refer to Figure 3 According to the embodiment, the display device 1 can be implemented as a transparent display device. In the transparent display device, by arranging circuit elements for image realization on a transparent substrate, the user can not only view the image displayed on the transparent display device, but also view objects outside the image.

[0060] The display device 1 according to the embodiment does not require a backlight unit, a liquid crystal layer or a packaging layer, and only requires ultra-small micro LEDs and driving circuits and wiring for driving the micro LEDs, thus easily ensuring the aperture ratio that is crucial in realizing a transparent display device.

[0061] In the embodiments described below, it is assumed that display device 1 is implemented as a transparent display device.

[0062] Figure 4 This is a control block diagram of a display device according to an embodiment.

[0063] Figure 5 This is a control block diagram specifically illustrating the configuration of a display module included in a display device according to an embodiment.

[0064] Reference Figure 4 and Figure 5 According to the embodiment, the display device 1 may include a plurality of display modules 10, a controller 300 for controlling the plurality of display modules 10, a communication circuit 430 for communicating with an external measuring device 450, a source input device 440 for receiving source images, a speaker 410 for outputting sound, and an input device 420 for receiving commands from a user for controlling the display device 1.

[0065] The input device 420 may include buttons or a touchpad arranged in the area of ​​the display device 1, and if the display panel 100 is implemented as a touch screen, the input device 420 may include a touchpad disposed in front of the display panel 100. Furthermore, the input device 420 may also include a remote control.

[0066] Input device 420 can receive various commands from the user to control display device 1, such as power on / off, volume control, channel tuning, screen adjustment, and various setting changes.

[0067] The speaker 410 can output sound based on the sound signal processed by the source signal received by the main controller 310 from the source input 440.

[0068] The communication circuit 430 can communicate with a relay server or another electronic device to exchange required data. The communication circuit 430 can employ at least one of various wireless communication methods, such as third-generation (3G), fourth-generation (4G), wireless local area network (WLAN), Wi-Fi, Bluetooth, Zigbee, Wi-Fi Direct (WFD), ultra-wideband (UWB), Infrared Data Association (IrDA), Bluetooth Low Energy (BLE), Near Field Communication (NFC), Z-wave, etc. Alternatively, wired communication methods such as Peripheral Component Interconnect (PCI), PCI-express, Universal Serial Bus (USB) can be used.

[0069] The communication circuit 430 can receive various data from the external measuring device 450. For example, the communication circuit 430 can receive data regarding the measurement of brightness.

[0070] The measured brightness may include the measured brightness of pixels measured by the external measuring device 450. For example, the measured brightness may include the measured brightness of each of a plurality of pixels measured by the external measuring device 450.

[0071] Additionally, the measured brightness may include the measured brightness of the light-emitting element 120 as measured by the external measuring device 450. For example, the measured brightness may include the measured brightness of each of a plurality of light-emitting elements 120 as measured by the external measuring device 450.

[0072] That is, the measured brightness may include the measured brightness of each pixel of the display module 10 measured by the external measuring device 450, and the measured brightness of each light-emitting element 120 of the display module 10 measured by the external measuring device 450.

[0073] The communication circuit 430 can send data about the measured brightness to the main controller 310. The main controller 310 can then send the data about the measured brightness to the brightness compensation unit 330.

[0074] The brightness compensation unit 330 can obtain information about the measured brightness based on data about the measured brightness. For example, the brightness compensation unit 330 can obtain the measured brightness of each of a plurality of pixels based on the data about the measured brightness.

[0075] The brightness compensation unit 330 can also obtain the measured brightness of each of the plurality of light-emitting elements 120 based on the data on the measured brightness.

[0076] Additionally, the brightness compensation unit 330 may include a memory (not shown) capable of storing information about the measured brightness. For example, the brightness compensation unit 330 may store the measured brightness of each of a plurality of pixels and the measured brightness of each of a plurality of light-emitting elements 120.

[0077] Source input 440 can receive source signals from set-top boxes, USB, antennas, etc. Therefore, source input 440 may include at least one selected from a set of source input interfaces including a High Definition Multimedia Interface (HDMI) cable port, a USB port, an antenna, etc.

[0078] The source signal received by the source input device 440 can be processed by the main controller 310 and converted into a form that can be output from the display panel 100 and the speaker 410.

[0079] The controller 300 may include a main controller 310, a timing controller 320 and / or a brightness compensation unit 330. The main controller 310 processes the source signal input through the source input device 440 to generate image data corresponding to the input source signal. The timing controller 320 processes the image data sent from the main controller 310 and sends the processed data to each of the plurality of display modules 10.

[0080] The main controller 310 can use the source signal input through the source input device 440 to generate image data of the desired image quality through image quality correction.

[0081] The main controller 310 can separate the generated image data into image data corresponding to each of the plurality of display modules 10, and send the data to the timing controller 320. For example, the main controller 310 can generate image data corresponding to the source signal, separate the image data into image data corresponding to each of the plurality of display modules 10, and send each of the separated image data to the timing controller 320 via multiple cables. The multiple cables may include a digital video interface (DVI) cable, a low-voltage differential signal (LVDS) cable, a high-definition multimedia interface (HDMI) cable, and / or an optical fiber cable.

[0082] The timing controller 320 can process image data received from the main controller 310 to obtain pixel data.

[0083] In addition, the main controller 310 can process image data to obtain pixel data and send the obtained pixel data to the timing controller 320.

[0084] Pixel data may include R color data, G color data, and / or B color data with gray levels according to grayscale.

[0085] With 256 gray levels, each of the R, G, and B color data can have gray levels ranging from 0 to 255. In this case, the brightness of each 120 light-emitting element can be adjusted across 256 different levels.

[0086] For example, in the case of light-emitting element 120 being a red light-emitting element 120R (see...) Figure 8 In this case, the R color data can have a single gray level from 0 to 255, so the red emitting element 120R can be adjusted at 256 different levels (see [reference]). Figure 8 (brightness).

[0087] In another example, the light-emitting element 120 is a green light-emitting element 120G (see [reference]). Figure 8 In the case of ), G color data can have a single gray level from 0 to 255, therefore a green emitting element 120G (see Figure 8 The brightness can be adjusted in 256 different levels.

[0088] In yet another example, the light-emitting element 120 is a blue light-emitting element 120B (see [link]). Figure 8 In this case, the B color data can have a single gray level from 0 to 255, so the blue emitting element 120B can be adjusted at 256 different levels (see [reference]). Figure 8 (brightness).

[0089] In addition to 256 gray levels, the pixel data according to this disclosure may also include data with different gray levels. For example, in the case where the pixel data is implemented in 4 bits, there are 16 gray levels, and the pixel data can have gray levels from 0 to 15, so the brightness of the light-emitting element 120 can be adjusted at 16 different levels.

[0090] The higher the grayscale, the higher the grayscale level of the light-emitting element 120 corresponding to the pixel data.

[0091] The brightness compensation unit 330 can compensate for pixel data sent from the timing controller 320 to each of the multiple display modules 10.

[0092] For example, the brightness compensation unit 330 can compensate for the R color data sent from the timing controller 320 to each of the plurality of display modules 10 to change the gray level of the R color data.

[0093] In another example, the brightness compensation unit 330 can compensate for the G color data sent from the timing controller 320 to each of the plurality of display modules 10 to change the gray level of the G color data.

[0094] In yet another example, the brightness compensation unit 330 can compensate for the B color data sent from the timing controller 320 to each of the plurality of display modules 10 to change the gray level of the B color data.

[0095] Each of the plurality of display modules 10 may include a display panel 100 for displaying images and a driver integrated circuit (IC) 200 for driving the display panel 100. Each of the plurality of display modules 10 may be a transparent display module for implementing a transparent display device.

[0096] The driver IC 200 can generate drive signals for displaying images on the display panel 100 based on pixel data sent from the timing controller 320.

[0097] The drive signal generated from the driver IC 200 may include gate signals and data signals, and the generated drive signal may be input to the display panel 100.

[0098] The display panel 100 may include pixel circuitry 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 [link to relevant documentation]). Figure 8 ), Green light-emitting element 120G (see) Figure 8 ) and / or blue light-emitting element 120B (see Figure 8 ).

[0099] Each of the plurality of light-emitting elements 120 can be individually controlled by pixel circuit 130, and each pixel circuit 130 can operate based on a drive signal output from driver IC 200.

[0100] Figure 6 It is a diagram used to conceptually illustrate how each pixel is driven in the display module according to an embodiment.

[0101] Reference Figure 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 realizing (displaying) an image.

[0102] The data driver 220 can generate a data signal based on pixel data sent from the timing controller 320.

[0103] 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.

[0104] For example, once the gate voltage V GATE Data voltage V DATA and power supply voltage V DD The input is fed into the pixel circuit 130, and the pixel circuit 130 can then output a drive current I. D To drive the light-emitting element 120.

[0105] The drive current I output from pixel circuit 130 D It can be input to the light-emitting element 120, and the light-emitting element 120 can be based on the input drive current I. D Emitting light to create an image.

[0106] The drive current I output from pixel circuit 130 can be determined based on pixel data. D For example, in the case of light-emitting element 120, the light-emitting element 120R is red (see...). Figure 8 In the case of (), the data driver 220 can generate a data voltage V applied to the pixel circuit 130 based on the R color data received from the timing controller 320. DATA And the generated data voltage V DATA It can be applied to the red light-emitting element 120R (see...) Figure 8 The pixel circuit 130. Therefore, a drive current I can be output from the pixel circuit 130. D .

[0107] Pixel circuit 130 may include transistors TR1 and TR2 for switching or driving light-emitting element 120, and capacitor C.st As mentioned above, the light-emitting element 120 can be a miniature LED.

[0108] For example, transistors TR1 and 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 as at least one of a P-channel metal-oxide-semiconductor (PMOS) transistor, an N-channel metal-oxide-semiconductor (NMOS) transistor, and a complementary metal-oxide-semiconductor (CMOS) transistor.

[0109] In addition, transistors TR1 and TR2 can be thin-film transistors (TFTs). For example, transistors TR1 and TR2 can be implemented as at least one of a-Si TFT, low-temperature polycrystalline silicon (LTPS) TFT, or oxide TFT.

[0110] In the switching transistor TR1, the gate electrode is connected to the scan driver 210, the source electrode is connected to the data driver 220, and the drain electrode is connected to the capacitor C. st One end of the transistor and the gate electrode of the driving transistor TR2. Power supply voltage V DD It can be passed through capacitor C st Apply to the other end.

[0111] Additionally, in the driving transistor TR2, the power supply voltage V DD The voltage is applied to the source electrode, and the drain electrode is connected to the anode of the light-emitting element 120. The cathode of the light-emitting element 120 can be connected to a reference voltage V. SS Reference voltage V SS It has a higher voltage than the power supply voltage V DD For a low level, the ground voltage is used for grounding.

[0112] The pixel circuit 130 with the above structure can operate as follows. First, when a gate voltage V is applied from the scan driver 210... GATE When the switching transistor TR1 is turned on, the data voltage V applied from the data driver 220 DATA It can be transferred to capacitor C st One end of the transistor and the gate electrode of the driving transistor TR2.

[0113] With the gate-source voltage V of the driving transistor TR2 GS The corresponding voltage can be passed through capacitor C. st Maintain the preset time period. Driving transistor TR2 can be achieved by applying a gate-source voltage V... GS Corresponding drive current I D The light is applied to the anode of the light-emitting element 120 to make the light-emitting element 120 emit light.

[0114] Figure 7This is a front view of a display device illustrating an example of the arrangement of pixels in a display device according to an embodiment.

[0115] Reference Figure 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.

[0116] The first display module 10a and the second display module 10b can be arranged adjacent to each other relative to the boundary line BL.

[0117] The first display module 10a can be the same display module as the second display module 10b.

[0118] The display device 1 may include a first display module 10a and a second display module 10b, wherein the second display module 10b is the first display module 10a rotated by 180 degrees.

[0119] In other words, the second display module 10b can be formed by rotating the first display module 10a by 180 degrees based on the first display module 10a, and the second display module 10b and the first display module 10a are arranged symmetrically with respect to the boundary line BL.

[0120] Each of the plurality of first display modules 10a may include a plurality of first pixels. The plurality of first pixels may include a first boundary pixel P11.

[0121] The first boundary pixel P11 can be arranged adjacent to the boundary line BL. For example, the first boundary pixel P11 can be arranged in the first boundary region GA1 adjacent to the boundary line BL. The first boundary pixel P11 can be arranged in the first boundary region GA1 along the left-right direction (from -X to +X), and can be arranged in a column.

[0122] The plurality of first pixels may include first internal region pixels P12 arranged in a first internal region IA1 adjacent to the first boundary region GA1.

[0123] The first inner region pixels P12 can be arranged in a two-dimensional array within the first inner region IA1. For example, the first inner region pixels P12 can be arranged in an M × N matrix within the first inner region IA1. However, the arrangement of the first inner region pixels P12 is not limited to this, and they can be arranged at various positions within the first inner region IA1.

[0124] The first boundary pixel P11 and the first inner region pixel P12 can be arranged in the vertical direction (-Z to +Z direction) based on the boundary line BL. For example, each of the first boundary pixels P11 can be arranged in a row with the first inner region pixel P12. The vertical direction (-Z to +Z direction) based on the boundary line BL can refer to... Figure 1 and Figure 2 The vertical direction (from -Z to +Z) described in the text is the same direction.

[0125] Each of the plurality of first display modules 10a may include a first driver IC 200a arranged in a first border region BA1 adjacent to a first internal region IA1.

[0126] 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.

[0127] The first driver IC 200a can perform a scan of driver 210 (see...). Figure 6 ) and data drive 220 (see Figure 6 The functions of both.

[0128] The gate signal and data signal output from the first driver IC 200a can be transmitted to each of the multiple pixel circuits 130, and the light-emitting element 120 connected to each pixel circuit 130 can emit light through the driving current output from the pixel circuit 130.

[0129] The first border area BA1 can be formed on only one side of the first display module 10a. That is, among the four sides of the first display module 10a, a border area that does not output an image can be formed on only one side.

[0130] As a result, an active area for outputting images can be formed on the other three sides of the first display module 10a, thus enabling a borderless image on three sides.

[0131] Each of the plurality of second display modules 10b may include a plurality of second pixels. The plurality of second pixels may include a second boundary pixel P21.

[0132] The second boundary pixel P21 can be arranged adjacent to the boundary line BL. For example, the second boundary pixel P21 can be arranged in the second boundary region GA2 adjacent to the boundary line BL. The second boundary pixel P21 can be arranged in the second boundary region GA2 along the left-right direction (from -X to +X), and can be arranged in a column.

[0133] The plurality of second pixels may include second inner region pixels P22 arranged in a second inner region IA2 adjacent to the second boundary region GA2.

[0134] The second inner region pixels P22 can be arranged in a two-dimensional array within the second inner region IA2. For example, the second inner region pixels P22 can be arranged in an M × N matrix within the second inner region IA2. However, the arrangement of the second inner region pixels P22 is not limited to this, and they can be arranged at various positions within the second inner region IA2.

[0135] The second boundary pixel P21 and the second inner region pixel P22 can be arranged in the vertical direction (from -Z to +Z) based on the boundary line BL. For example, each of the second boundary pixels P21 can be arranged in a row with the second inner region pixel P22.

[0136] Each of the plurality of second display modules 10b may include a second driver IC 200b arranged in a second border region BA2 adjacent to the second internal region IA2.

[0137] The second driver IC 200b can output gate signals for turning on / off the light-emitting elements 120 included in each of the plurality of second pixels, and can output data signals based on pixel data received from the timing controller 320.

[0138] The second driver IC 200b can perform a scan of driver 210 (see...) Figure 6 ) and data drive 220 (see Figure 6 The functions of both.

[0139] The gate signal and data signal output from the second driver IC 200b can be transmitted to each of the multiple pixel circuits 130, and the light-emitting element 120 connected to each pixel circuit 130 can emit light through the driving current output from the pixel circuit 130.

[0140] The second border region BA2 can be formed on only one side of the second display module 10b. That is, among the four sides of the second display module 10b, a border region that does not output an image can be formed on only one side.

[0141] As a result, effective areas for outputting images can be formed on the other three sides of the second display module 10b, thereby achieving a borderless image on three sides.

[0142] Figure 8 This is an enlarged view showing an example of the arrangement of pixels in a display device according to an embodiment.

[0143] Reference Figure 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.

[0144] 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 inner 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.

[0145] 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 at a first red sub-pixel distance DR.

[0146] For example, the red light-emitting element 120R of the first boundary pixel P11 and the red light-emitting element 120R of the first inner region pixel P12 adjacent to the first boundary pixel P11 can be arranged at a first red sub-pixel distance DR.

[0147] 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 at a first green sub-pixel distance DG.

[0148] For example, the green light-emitting element 120G of the first boundary pixel P11 and the green light-emitting element 120G of the first inner region pixel P12 adjacent to the first boundary pixel P11 can be arranged at a first green sub-pixel distance DG.

[0149] 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 at a first blue sub-pixel distance DB.

[0150] The blue light-emitting element 120B of the first boundary pixel P11 and the blue light-emitting element 120B of the first inner region pixel P12 adjacent to the first boundary pixel P11 can be arranged at a distance DB from the first blue sub-pixel.

[0151] The distances from the first red sub-pixel to DR, the first green sub-pixel to DG, and the first blue sub-pixel to DB can be the same.

[0152] Each of the plurality of first pixels can be arranged with the adjacent first pixels at a first pixel spacing PP1.

[0153] For example, the first boundary pixel P11 and the first internal region pixel P12 adjacent to the first boundary pixel P11 can be arranged with a first pixel spacing PP1. Specifically, the center of the first boundary pixel P11 and the center of the first internal region pixel P12 can be arranged with a first pixel spacing PP1.

[0154] The blue light-emitting element 120B of the first boundary pixel P11 can be located at the first position L1 closest to the boundary line BL. For example, the blue light-emitting element 120B of the first boundary pixel P11 can be arranged at the first position L1 at a distance of a first distance D1 from the boundary line BL.

[0155] The green light-emitting element 120G of the first boundary pixel P11 can be positioned at a second position L2, where the distance from the second position L2 to the boundary line BL is longer than the distance from the first position L1 to the boundary line BL. For example, the green light-emitting element 120G of the first boundary pixel P11 can be arranged at the second position L2, where the distance from the second position L2 to the boundary line BL is a second distance D2, which is longer than the first distance D1.

[0156] The red light-emitting element 120R of the first boundary pixel P11 can be positioned at the third position L3, where the distance from the third position L3 to the boundary line BL is longer than the distance from the second position L2 to the boundary line BL. For example, the red light-emitting element 120R of the first boundary pixel P11 can be arranged at the third position L3, where the distance from the third position L3 to the boundary line BL is the third distance D3, which is longer than the second distance D2.

[0157] 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 inner 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.

[0158] The blue light-emitting element 120B of the second boundary pixel P21 can be located at the first position L1 closest to the boundary line BL. For example, the blue light-emitting element 120B of the second boundary pixel P21 can be arranged at the first position L1 at a distance of a first distance D1 from the boundary line BL.

[0159] The green light-emitting element 120G of the second boundary pixel P21 can be located at the second position L2, where the distance from the second position L2 to the boundary line BL is longer than the distance from the first position L1 to the boundary line BL. For example, the green light-emitting element 120G of the second boundary pixel P21 can be arranged at the second position L2, where the distance from the second position L2 to the boundary line BL is a second distance D2, which is longer than the first distance D1.

[0160] The red light-emitting element 120R of the second boundary pixel P21 can be located at the third position L3, where the distance from the third position L3 to the boundary line BL is longer than the distance from the second position L2 to the boundary line BL. For example, the red light-emitting element 120R of the second boundary pixel P21 can be arranged at the third position L3, where the distance from the third position L3 to the boundary line BL is the third distance D3, which is longer than the second distance D2.

[0161] 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 can be arranged at a distance DB' from the second blue sub-pixel.

[0162] The distance DB' of the second blue sub-pixel can be less than the distance DB of the first blue sub-pixel.

[0163] A seam S may be formed between the first display module 10a and the second display module 10b. According to this disclosure, the first boundary region GA1 and the second boundary region GA2 can be arranged as close as possible, thus providing a display device 1 in which the gap of the seam S is minimized.

[0164] The first boundary pixel P11 and the second boundary pixel P21 can be arranged with a second pixel spacing PP2. For example, the center of the first boundary pixel P11 and the center of the second boundary pixel P21 can be arranged with a second pixel spacing PP2.

[0165] The second pixel pitch PP2 can be greater than the first pixel pitch PP1. For example, because the seam S is formed between the first boundary pixel P11 and the second boundary pixel P21, the second pixel pitch PP2 can be greater than the first pixel pitch PP1 due to the gap in the seam S. However, if the first boundary region GA1 and the second boundary region GA2 are arranged as close as possible to minimize the gap in the seam S, the first pixel pitch PP1 and the second pixel pitch PP2 can be the same. However, in the following description, the second pixel pitch PP2 is described as being larger than the first pixel pitch PP1.

[0166] 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 at a distance DG' from the second green sub-pixel.

[0167] Because the second pixel spacing PP2 is greater than the first pixel spacing PP1, the distance of the second green sub-pixel to DG' can be greater than the distance of the first green sub-pixel to DG.

[0168] 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 can be arranged at the second red sub-pixel distance DR'.

[0169] The distance DR' of the second red sub-pixel can be greater than the distance DR of the first red sub-pixel.

[0170] In summary, the distance between identical light-emitting elements of adjacent pixels in each display module can 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 distance DB' of the second blue sub-pixel can be less than the distance DB of the first blue sub-pixel, the distance DG' of the second green sub-pixel can be greater than the distance DG of the first green sub-pixel, and the distance DR' of the second red sub-pixel can be greater than the distance DR of the first red sub-pixel.

[0171] Display device 1 may include an aperture region TA adjacent to each of a plurality of first pixels and a plurality of second pixels. Because each light-emitting element 120 may be a micro LED, the ratio (aperture ratio or transmittance) of the aperture regions TA can be maximized, thereby improving the quality of the image output through the transparent display device.

[0172] Figure 9 This is a diagram illustrating an example of a seam line formed near a boundary line without compensating for the brightness of the boundary pixels adjacent to the boundary line.

[0173] See Figure 9 As described above, the distance between identical light-emitting elements of adjacent pixels in each display module can be different from the distance between identical light-emitting elements of pixels adjacent to the boundary line BL. Therefore, without compensating for the brightness of pixels adjacent to the boundary line BL, the seam line SL may be visible near the boundary line BL due to brightness non-uniformity.

[0174] For example, when the distance between the second blue sub-pixel DB' and the first blue sub-pixel DB is less, the distance between the blue light-emitting elements 120B is relatively close to the boundary line BL, so the blue seam line SL can be visible in the image.

[0175] Therefore, it is necessary to compensate for the brightness of boundary pixels adjacent to the boundary line BL based on the brightness of the pixels in the inner region. The compensation for the brightness of boundary pixels adjacent to the boundary line BL based on the brightness of the pixels in the inner region is described in detail below.

[0176] Figure 10 This is a flowchart of a method for controlling a display device according to an embodiment.

[0177] In one embodiment, the controller 300 can control multiple first pixels and multiple second pixels based on image data.

[0178] The controller 300 controls multiple first pixels and multiple second pixels based on image data, which may include: obtaining image data corresponding to the source signal by the main controller 310; processing the image data by the timing controller 320 to obtain pixel data with defined gray levels, and sending the obtained pixel data to each display module 10 to control the brightness of each of the multiple light-emitting elements 120.

[0179] The blue light-emitting element 120B can be referred to as the first light-emitting element, and the reference brightness of the blue light-emitting element 120B can be referred to as the first reference brightness.

[0180] The green light-emitting element 120G can be referred to as the second light-emitting element, and the reference brightness of the green light-emitting element 120G can be referred to as the second reference brightness.

[0181] The red light-emitting element 120R can be referred to as the third light-emitting element, and the reference brightness of the red light-emitting element 120R can be referred to as the third reference brightness.

[0182] However, the ordinal numbers, namely first, second, and third, are not restricted by the type of light-emitting element in the pixel or the order in which the light-emitting elements are arranged in the pixel.

[0183] For example, in the case where a pixel includes only a blue light-emitting element 120B and a red light-emitting element 120R, the red light-emitting element 120R can be referred to as the second light-emitting element, and the reference brightness of the red light-emitting element 120R can be referred to as the second reference brightness.

[0184] In another example, the red light-emitting element 120R is located at the second position L2 (see...). Figure 8 And the green light-emitting element 120G is located at the third position L3 (see Figure 8 In the case of ), the red light-emitting element 120R can be referred to as the second light-emitting element, the reference brightness of the red light-emitting element 120R can be referred to as the second reference brightness, the green light-emitting element 120G can be referred to as the third light-emitting element, and the reference brightness of the green light-emitting element 120G can be referred to as the third reference brightness.

[0185] However, for ease of description, in the following text, the blue light-emitting element 120B is referred to as the first light-emitting element, the reference brightness of the blue light-emitting element 120B is referred to as the first reference brightness, the green light-emitting element 120G is referred to as the second light-emitting element, the reference brightness of the green light-emitting element 120G is referred to as the second reference brightness, the red light-emitting element 120R is referred to as the third light-emitting element, and the reference brightness of the red light-emitting element 120R is referred to as the third reference brightness.

[0186] In various embodiments, the controller 300 may reduce (lower) or increase the brightness of the light-emitting element 120 to be lower or higher than a reference brightness of the light-emitting element 120 determined based on image data.

[0187] In an embodiment, the controller 300 may reduce the brightness of the first light-emitting element 120B to below a first reference brightness (1000) of the first light-emitting element 120B determined based on image data.

[0188] For example, the controller 300 can process image data to obtain B color data, determine the gray level of the B color data as a 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 pixel P11 and the second boundary pixel P21.

[0189] In an embodiment, the controller 300 can increase the brightness of the second light-emitting element 120G to a level higher than the second reference brightness (1100) of the second light-emitting element 120G determined based on image data.

[0190] For example, the controller 300 can process image data to obtain G color data, determine the gray level of the G color data as a second reference brightness, and increase the gray level of the G color data corresponding to the second light-emitting element 120G of the first boundary pixel P11 and the second boundary pixel P21.

[0191] In an embodiment, the controller 300 may increase the brightness of the third light-emitting element 120R to a level higher than the third reference brightness (1200) of the third light-emitting element 120R determined based on image data.

[0192] For example, the controller 300 can process image data to obtain R color data, determine the gray level of the R color data as a 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 pixel P11 and the second boundary pixel P21.

[0193] In one embodiment, the controller 300 can reduce the brightness of the first light-emitting element 120B of the first boundary pixel P11 to a first ratio lower than the first reference brightness.

[0194] The first ratio can be based on an external measuring device 450 (see...). Figure 4 The first measured brightness of the first internal region pixel P12 is preset by measuring the first measured brightness of the first light-emitting element 120B of the first boundary pixel P11, which is measured by the external measuring device 450. The first measured brightness may include the measured brightness corresponding to the first light-emitting element 120B of the first internal region pixel P12.

[0195] For example, if the second measured brightness is 1.2 times greater than the first measured brightness, the first ratio can be 1.2 times. Therefore, in this case, the controller 300 can reduce the grayscale of the B color data corresponding to the first light-emitting element 120B of each of the first boundary pixel P11 and the second boundary pixel P21 by a factor of 1.2.

[0196] The first ratio can be preset proportionally to the difference between the first measured brightness and the second measured brightness.

[0197] For example, the greater the difference between the first measured brightness and the second measured brightness, the larger the first ratio can be set. Therefore, as the difference between the first measured brightness and the second measured brightness increases, the controller 300 can reduce the grayscale of the B color data corresponding to the first light-emitting element 120B of each of the first boundary pixel P11 and the second boundary pixel P21 by a larger first ratio.

[0198] In one embodiment, the controller 300 can increase the brightness of the second light-emitting element 120G of the first boundary pixel P11 to a second ratio higher than the second reference brightness.

[0199] The second ratio can be preset based on a third measured brightness of the first internal region pixel P12 measured by the external measuring device 450 and a fourth measured brightness of the second light-emitting element 120G of the first boundary pixel P11 measured by the external measuring device 450. The third measured brightness may include the measured brightness corresponding to the second light-emitting element 120G of the first internal region pixel P12.

[0200] For example, if the fourth measured brightness is 1.5 times smaller than the third measured brightness, the second ratio can be 1.5 times. Therefore, in this case, the controller 300 can increase the grayscale of the G color data corresponding to the second light-emitting element 120G of each of the first boundary pixel P11 and the second boundary pixel P21 by 1.5 times.

[0201] The second ratio can be preset proportionally to the difference between the third and fourth measured brightness.

[0202] For example, the greater the difference between the third measured brightness and the fourth measured brightness, the larger the second ratio can be set. Therefore, as the difference between the third measured brightness and the fourth measured brightness increases, the controller 300 can set a larger second ratio to increase the grayscale of the G color data corresponding to the second light-emitting element 120G of each of the first boundary pixel P11 and the second boundary pixel P21.

[0203] In an embodiment, the controller 300 can increase the brightness of the third light-emitting element 120R of the first boundary pixel P11 to a third ratio higher than the third reference brightness.

[0204] The third ratio can be preset based on the fifth measured brightness of the first internal region pixel P12 measured by the external measuring device 450 and the sixth measured brightness of the third light-emitting element 120R of the first boundary pixel P11 measured by the external measuring device 450. The fifth measured brightness may include the measured brightness corresponding to the third light-emitting element 120R of the first internal region pixel P12.

[0205] For example, if the sixth measured brightness is 1.7 times smaller than the fifth measured brightness, the third ratio can be 1.7 times. Therefore, in this case, the controller 300 can increase the grayscale of the R color data corresponding to the third light-emitting element 120R of each of the first boundary pixel P11 and the second boundary pixel P21 by 1.7 times.

[0206] The third ratio can be preset proportionally to the difference between the fifth and sixth measured brightness.

[0207] For example, the greater the difference between the fifth measured brightness and the sixth measured brightness, the larger the third ratio can be set. Therefore, as the difference between the fifth measured brightness and the sixth measured brightness increases, the controller 300 can set a larger third ratio to increase the grayscale of the R color data corresponding to the third light-emitting element 120R of each of the first boundary pixel P11 and the second boundary pixel P21.

[0208] The third ratio can be set to be greater than the second ratio.

[0209] For example, the brightness of the third light-emitting element 120R of the first boundary pixel P11 and the second boundary pixel P21 can be increased at a greater rate than the brightness of the second light-emitting element 120G of the first boundary pixel P11 and the second boundary pixel P21.

[0210] Figure 11 This is a diagram illustrating a display device implemented by a plurality of display modules according to an embodiment.

[0211] The display device 1 can be implemented by combining a plurality of display modules 10 according to the above embodiments.

[0212] As described above, each of the plurality of display modules 10 may include a driver IC 200 for driving the display panel 100. The driver IC 200 may be electrically connected to the display panel 100 by employing one of a variety of bonding methods such as chip-on-film (COF) bonding, film-on-glass (FOG) bonding, chip-on-glass (COG) bonding, or tape automatic bonding (TAB).

[0213] For example, the display panel 100 can be connected to a flexible printed circuit board (FPCB) via a film on which a driver IC 200 is mounted. The FPCB can be connected to a driver board 501 to electrically connect the display module 10 to the driver board 501.

[0214] The timing controller 320 can be mounted on the driver board 501. Therefore, the driver board 501 can also be referred to as a T-con board. Multiple display modules 10 can receive various data from the driver board 501.

[0215] In addition, the display device 1 may also include a motherboard 301 and a power board 601. The main controller 310 may be located on the motherboard 301, and the power supply circuit required to supply power to the multiple display modules 10 may be located on the power board 601.

[0216] Power board 601 can be electrically connected to multiple display modules (10-1, 10-2, ..., 10-n) via FPCB, and can provide power voltage V to the multiple display modules 10 connected via FPCB. DD Reference voltage V SS Various operating power supplies, etc.

[0217] In the example above, although multiple display modules 10 sharing a driver board 501 has been described, a separate driver board 501 can be connected to each display module 10. Alternatively, the multiple display modules 10 can be grouped, and each group can be connected to a driver board 501.

[0218] Figure 12 and Figure 13 This is a diagram illustrating a method of tiling multiple display modules according to an embodiment.

[0219] Reference Figure 12 and Figure 13 The display device 1 according to the 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.

[0220] The transparent substrate 13 can be made from a variety of substrates such as silicon substrates, glass substrates, plastic substrates, PCBs, FPCBs, cavity substrates, etc. The transparent substrate 13 can be made transparent, and its material is not limited.

[0221] The first film layer 14 may be disposed on the upper side of the transparent substrate 13. The first film layer 14 may include an optically transparent adhesive (OCA) type film to minimize the air gap between the transparent substrate 13 and the display module 10.

[0222] The first display module 10a and the second display module 10b can be arranged on the first film layer 14.

[0223] The resin layer 15 can be disposed between the first display module 10a and the second display module 10b, or it can be disposed above the first display module 10a and the second display module 10b. The resin layer 15 may include resin for laying the first display module 10a and the second display module 10b flat.

[0224] The second film layer 16 may be disposed on the upper side of the resin layer 15. The second film layer 16 may include a low-reflection film for minimizing the reflection of light incident from the outside of the display device 1.

[0225] Reference Figure 13 In existing display devices, the resin layer 15 is only arranged between the display modules 10. Therefore, when the low-reflection film is attached to the display module 10, an air gap appears between the display module 10 and the low-reflection film.

[0226] See Figure 12 In the display device 1 according to the embodiment, by planarizing the resin layer 15, the resin layer 15 can be formed at the same height in the area between the display modules 10 and in the area corresponding to the upper side of each display module 10. Therefore, even when a low-reflection film is attached to the display module 10, air gaps can be prevented.

[0227] Figure 14 and Figure 15 This is a diagram illustrating a method for minimizing the difference between the brightness of light incident on multiple display modules and the brightness of light passing through multiple display modules.

[0228] Reference Figure 14 and Figure 15 Because display device 1 is a transparent display device, it is necessary to maintain the brightness of the light incident on display device 1 and the brightness of the light emitted from display device 1 uniformly.

[0229] exist Figure 14 Even if light with uniform brightness (AO=OB) is incident on the display device 1, the light can be refracted by the various components included in the display module 10 and the resin layer 15 between the display module 10, thus emitting light with non-uniform brightness (CO'≠O'D).

[0230] However, refer to Figure 15 By appropriately setting the refractive index of the resin layer 15, the difference between the brightness of the light incident on the display device 1 and the brightness of the light emitted from the display device 1 can be minimized.

[0231] 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 to Δn1 and Δn2, the difference between the brightness of the light incident on the display device 1 and the brightness of the light emitted from the display device 1 can be minimized.

[0232] According to an embodiment of this 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 arranged adjacent to the first display module, with a boundary line between the first display module and the second display module; and a controller configured to control the plurality of first pixels and the plurality of second pixels based on image data, wherein the plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line, the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line, each of the plurality of first boundary pixels and each of the plurality of 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 configured to output light of a first color, and a second light-emitting element arranged at a second position further away from the boundary line than the first position and configured to output light of a second color, and the controller is configured to reduce the brightness of the first light-emitting elements to below a reference brightness of the first light-emitting elements determined based on the image data, and increase the brightness of the second light-emitting elements to above a reference brightness of the second light-emitting elements determined based on the image data.

[0233] Multiple first boundary pixels can form a first boundary region. The multiple first pixels may include multiple first inner region pixels arranged in a first inner region adjacent to the first boundary region. Multiple second boundary pixels can form a second boundary region. The multiple second pixels may include multiple second inner region pixels arranged in a second inner region adjacent to the second boundary region.

[0234] According to embodiments of this disclosure, a first display module may include a first border region adjacent to a first internal region and a first driver integrated circuit (IC) arranged in the first border region. A second display module may include a second border region adjacent to a second internal region and a second driver IC arranged in the second border region.

[0235] According to embodiments of this disclosure, a plurality of first boundary pixels and a plurality of first internal region pixels can be arranged vertically, wherein the plurality of first boundary pixels are located between a boundary line and a plurality of first internal region pixels. A plurality of second boundary pixels and a plurality of second internal region pixels can be arranged vertically, wherein the plurality of second boundary pixels are located between a boundary line and a plurality of second internal region pixels.

[0236] According to embodiments of the present disclosure, the controller can be configured to reduce the brightness of the first light-emitting element to a first ratio lower than a reference brightness of the first light-emitting element, and increase the brightness of the second light-emitting element to a second ratio higher than a reference brightness of the second light-emitting element.

[0237] The first ratio can be preset based on a first measured brightness of a plurality of first internal region pixels measured by an external measuring device and a second measured brightness of a first light-emitting element measured by an external measuring device. The second ratio can be preset based on a third measured brightness of a plurality of first internal region pixels measured by an external measuring device and a fourth measured brightness of a second light-emitting element measured by an external measuring device.

[0238] According to embodiments of this disclosure, the first ratio can be preset in proportion to the difference between the first measured brightness and the second measured brightness. The second ratio can be preset in proportion to the difference between the third measured brightness and the fourth measured brightness.

[0239] According to embodiments of the present disclosure, the plurality of light-emitting elements may include a third light-emitting element arranged at a third position further away from the boundary line than the second position and configured to output light of a third color.

[0240] The controller can be configured to increase the brightness of the third light-emitting element to a level higher than a reference brightness of the third light-emitting element determined based on image data, and decrease the brightness of the first light-emitting element to a level lower than the reference brightness of the first light-emitting element by a first ratio, increase the brightness of the second light-emitting element to a level higher than the reference brightness of the second light-emitting element by a second ratio, and increase the brightness of the third light-emitting element to a level higher than the reference brightness of the third light-emitting element by a third ratio.

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

[0242] According to embodiments of the present disclosure, the plurality of light-emitting elements may include a third light-emitting element, which is arranged at a third position closer to the boundary line than the second position and farther from the boundary line than the first position, and is configured to output light of a third color.

[0243] The controller can be configured to increase the brightness of the third light-emitting element to a level higher than a reference brightness of the third light-emitting element determined based on image data, and decrease the brightness of the first light-emitting element to a level lower than the reference brightness of the first light-emitting element by a first ratio, increase the brightness of the second light-emitting element to a level higher than the reference brightness of the second light-emitting element by a second ratio, and increase the brightness of the third light-emitting element to a level higher than the reference brightness of the third light-emitting element by a third ratio.

[0244] The second ratio can be greater than the third ratio.

[0245] According to embodiments of this disclosure, the second display module may have the same configuration as the first display module. The second display module may have an orientation that is 180 degrees rotated relative to the first display module about a front-rear axis passing through the center of the second display module, so as to be arranged end-to-end with the first display module. According to embodiments of this disclosure, the first light-emitting element may be a blue light-emitting element. The second light-emitting element may be a green light-emitting element or a red light-emitting element.

[0246] According to embodiments of this disclosure, a method for controlling a display device is provided. The display device includes: a first display module including a plurality of first pixels; and a second display module including a plurality of second pixels and arranged 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 includes a plurality of first boundary pixels adjacent to the boundary line, and the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line. Each of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element and a second light-emitting element. The first light-emitting element is arranged at a first position closest to the boundary line and configured to output light of a first color, and the second light-emitting element is arranged at a second position further away from the boundary line than the first position and configured to output light of a second color. The method includes controlling the plurality of first pixels and the plurality of second pixels based on image data, including reducing the brightness of the first light-emitting element to below a reference brightness of the first light-emitting element determined based on the image data, and increasing the brightness of the second light-emitting element to above a reference brightness of the second light-emitting element determined based on the image data.

[0247] According to embodiments of this disclosure, a plurality of first boundary pixels can form a first boundary region. The plurality of first pixels may include a plurality of first inner region pixels arranged in a first inner region adjacent to the first boundary region. A plurality of second boundary pixels can form a second boundary region. The plurality of second pixels may include a plurality of second inner region pixels arranged in a second inner region adjacent to the second boundary region.

[0248] According to embodiments of this disclosure, a first display module may include a first border region adjacent to a first internal region and a first driver integrated circuit (IC) arranged in the first border region. A second display module may include a second border region adjacent to a second internal region and a second driver IC arranged in the second border region.

[0249] According to embodiments of this disclosure, a plurality of first boundary pixels and a plurality of first internal region pixels can be arranged vertically, wherein the plurality of first boundary pixels are located between a boundary line and a plurality of first internal region pixels. A plurality of second boundary pixels and a plurality of second internal region pixels can be arranged vertically, wherein the plurality of second boundary pixels are located between a boundary line and a plurality of second internal region pixels.

[0250] According to embodiments of this disclosure, reducing the brightness of the first light-emitting element to below a reference brightness of the first light-emitting element and increasing the brightness of the second light-emitting element to above a reference brightness of the second light-emitting element may include: reducing the brightness of the first light-emitting element to a first ratio lower than the reference brightness of the first light-emitting element, and increasing the brightness of the second light-emitting element to a second ratio higher than the reference brightness of the second light-emitting element.

[0251] The first ratio can be preset based on a first measured brightness of a plurality of first internal region pixels measured by an external measuring device and a second measured brightness of a first light-emitting element measured by an external measuring device. The second ratio can be preset based on a third measured brightness of a plurality of first internal region pixels measured by an external measuring device and a fourth measured brightness of a second light-emitting element measured by an external measuring device.

[0252] The first ratio can be preset proportionally to the difference between the first and second measured brightness, and the second ratio can be preset proportionally to the difference between the third and fourth measured brightness.

[0253] The plurality of light-emitting elements may also include a third light-emitting element, which is arranged at a third position further away from the boundary line than the second position and is configured to output light of a third color.

[0254] Reducing the brightness of the first light-emitting element to below a first reference brightness and increasing the brightness of the second light-emitting element to above a second reference brightness may include reducing the brightness of the first light-emitting element to below a first reference brightness by a first ratio and increasing the brightness of the second light-emitting element to above a second reference brightness by a second ratio. It may also include increasing the brightness of the third light-emitting element to above a third reference brightness of the third light-emitting element determined based on image data and increasing the brightness of the third light-emitting element to above a third reference brightness by a third ratio.

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

[0256] The plurality of light-emitting elements may also include a third light-emitting element, which is arranged at a third position closer to the boundary line than the second position and farther from the boundary line than the first position, and is configured to output light of a third color.

[0257] Reducing the brightness of the first light-emitting element to below a first reference brightness and increasing the brightness of the second light-emitting element to above a second reference brightness may include reducing the brightness of the first light-emitting element to below a first reference brightness by a first ratio and increasing the brightness of the second light-emitting element to above a second reference brightness by a second ratio. It may also include increasing the brightness of the third light-emitting element to above a third reference brightness of the third light-emitting element determined based on image data and increasing the brightness of the third light-emitting element to above a third reference brightness by a third ratio.

[0258] The second ratio can be greater than the third ratio.

[0259] The second display module can be the first display module rotated 180 degrees.

[0260] The first light-emitting element can be a blue light-emitting element, and the second light-emitting element can be a green light-emitting element or a red light-emitting element.

[0261] Furthermore, the disclosed embodiments can be implemented in the form of a recording medium storing computer-executable instructions. The instructions can be stored as program code, and when executed by a processor, the instructions can create program modules to perform the operations of the disclosed embodiments. The recording medium can be implemented as a computer-readable recording medium.

[0262] Computer-readable recording media can include all kinds of recording media that store instructions that can be interpreted by a computer. For example, computer-readable recording media can be read-only memory (ROM), random access memory (RAM), magnetic tape, magnetic disk, flash memory, optical data storage devices, etc.

[0263] Computer-readable recording media may be provided in the form of non-transitory storage media, wherein the term "non-transitory storage media" means only that the storage media is a tangible device and does not include signals (e.g., electromagnetic waves), but the term does not distinguish between cases where data is stored semi-permanently in the storage media and cases where data is temporarily stored in the storage media. For example, "non-transitory storage media" may include buffers for temporarily storing data.

[0264] Methods according to various embodiments disclosed herein can be provided in computer program products. Computer program products can be traded as products between sellers and buyers. Computer program products can be distributed in the form of machine-readable storage media (e.g., compact disc read-only memory (CD-ROM)) or through online app stores (e.g., the Play Store). TMThis can be done either directly between two user devices (e.g., smartphones) or through downloading or uploading. In the case of online distribution, at least a portion of the computer program product (e.g., a downloadable application) can be stored at least semi-permanently or temporarily generated in a storage medium, such as the memory of a manufacturer's server, an app store's server, or a relay server.

[0265] Although embodiments of the present disclosure have been described with reference to the accompanying drawings, those skilled in the art will understand that other specific modifications can be readily made without departing from the technical spirit or essential characteristics of the present disclosure. Therefore, the foregoing embodiments should be considered illustrative rather than restrictive in all respects.

Claims

1. A display device, comprising: The first display module includes multiple first pixels; The second display module includes a plurality of second pixels and is arranged adjacent to the first display module, and has a boundary line between the first display module and the second display module; and The controller is configured to control the plurality of first pixels and the plurality of second pixels based on image data. Wherein, the plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line. The plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line. Each of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including: A first light-emitting element is arranged at a first position closest to the boundary line and configured to output light of a first color. The second light-emitting element is arranged at a second position further away from the boundary line than the first position, and is configured to output light of a second color. The controller is configured to: The brightness of the first light-emitting element is reduced to below a reference brightness of the first light-emitting element determined based on the image data, and The brightness of the second light-emitting element is increased to a level higher than the reference brightness of the second light-emitting element determined based on the image data.

2. The display device according to claim 1, wherein, The plurality of first boundary pixels form a first boundary region. The plurality of first pixels includes a plurality of first interior region pixels arranged in a first interior region adjacent to the first boundary region. The plurality of second boundary pixels form a second boundary region, and The plurality of second pixels includes a plurality of second inner region pixels arranged in a second inner region adjacent to the second boundary region.

3. The display device according to claim 2, wherein, The first display module includes: The first border region adjacent to the first inner region, and A first driver integrated circuit (IC) is arranged in the first frame region, and The second display module includes: The second border region adjacent to the second inner region, and The second driver IC is arranged in the second frame area.

4. The display device according to claim 2, wherein, The plurality of first boundary pixels and the plurality of first inner region pixels are arranged vertically, with the plurality of first boundary pixels located between the boundary line and the plurality of first inner region pixels. The plurality of second boundary pixels and the plurality of second inner region pixels are arranged in a vertical direction, with the plurality of second boundary pixels located between the boundary line and the plurality of second inner region pixels.

5. The display device according to claim 2, wherein, The controller is configured to: The brightness of the first light-emitting element is reduced to a first ratio lower than the reference brightness of the first light-emitting element, and Increase the brightness of the second light-emitting element to a second ratio higher than the reference brightness of the second light-emitting element. The first ratio is preset based on the first measured brightness of the plurality of first internal region pixels measured by an external measuring device and the second measured brightness of the first light-emitting element measured by the external measuring device, and The second ratio is preset based on the third measured brightness of the plurality of first internal region pixels measured by the external measuring device and the fourth measured brightness of the second light-emitting element measured by the external measuring device.

6. The display device according to claim 5, wherein, The first ratio is preset in proportion to the difference between the first measured brightness and the second measured brightness, and The second ratio is preset in proportion to the difference between the third measured brightness and the fourth measured brightness.

7. The display device according to claim 1, wherein, The plurality of light-emitting elements include: The third light-emitting element is arranged at a third position further away from the boundary line than the second position, and is configured to output light of a third color. The controller is configured to: Increase the brightness of the third light-emitting element to a level higher than the reference brightness of the third light-emitting element determined based on the image data, and The brightness of the first light-emitting element is reduced to a first ratio lower than its reference brightness; the brightness of the second light-emitting element is increased to a second ratio higher than its reference brightness; and the brightness of the third light-emitting element is increased to a third ratio higher than its reference brightness. The third ratio is greater than the second ratio.

8. The display device according to claim 1, wherein, The plurality of light-emitting elements include: The third light-emitting element is arranged at a third position, closer to the boundary line than the second position and farther from the boundary line than the first position, and is configured to output light of a third color. The controller is configured to: Increase the brightness of the third light-emitting element to a level higher than the reference brightness of the third light-emitting element determined based on the image data, and The brightness of the first light-emitting element is reduced to a first ratio lower than its reference brightness; the brightness of the second light-emitting element is increased to a second ratio higher than its reference brightness; and the brightness of the third light-emitting element is increased to a third ratio higher than its reference brightness. The second ratio is greater than the third ratio.

9. The display device according to claim 1, wherein, The second display module has the same configuration as the first display module, and The second display module has an orientation that is rotated 180 degrees about a front-rear axis passing through the center of the second display module, so as to be arranged end-to-end with the first display module.

10. The display device according to claim 1, 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, the display device comprising: The first display module includes multiple first pixels; A second display module includes a plurality of second pixels and is arranged adjacent to a first display module, with a boundary line between the first display module and the second display module. The plurality of first pixels includes a plurality of first boundary pixels adjacent to the boundary line, and the plurality of second pixels includes a plurality of second boundary pixels adjacent to the boundary line. Each of the plurality of first boundary pixels and each of the plurality of second boundary pixels includes a plurality of light-emitting elements, the plurality of light-emitting elements including a first light-emitting element and a second light-emitting element. The first light-emitting element is arranged at a first position closest to the boundary line and configured to output light of a first color. The second light-emitting element is arranged at a second position further away from the boundary line than the first position and configured to output light of a second color. The method includes: Controlling the plurality of first pixels and the plurality of second pixels based on image data includes: The brightness of the first light-emitting element is reduced to below a reference brightness of the first light-emitting element determined based on the image data, and The brightness of the second light-emitting element is increased to a level higher than the reference brightness of the second light-emitting element determined based on the image data.

12. The method according to claim 11, wherein, The plurality of first boundary pixels form a first boundary region. The plurality of first pixels includes a plurality of first interior region pixels arranged in a first interior region adjacent to the first boundary region. The plurality of second boundary pixels form a second boundary region, and The plurality of second pixels includes a plurality of second inner region pixels arranged in a second inner region adjacent to the second boundary region.

13. The method according to claim 12, wherein, The first display module includes a first border region adjacent to the first internal region and a first driver integrated circuit (IC) arranged in the first border region. The second display module includes a second border region adjacent to the second internal region and a second driver IC arranged in the second border region.

14. The method according to claim 12, wherein, The plurality of first boundary pixels and the plurality of first inner region pixels are arranged vertically, with the plurality of first boundary pixels located between the boundary line and the plurality of first inner region pixels. The plurality of second boundary pixels and the plurality of second inner region pixels are arranged in a vertical direction, with the plurality of second boundary pixels located between the boundary line and the plurality of second inner region pixels.

15. The method according to claim 12, wherein, Reducing the brightness of the first light-emitting element to below a reference brightness of the first light-emitting element, and increasing the brightness of the second light-emitting element to above a reference brightness of the second light-emitting element, includes: The brightness of the first light-emitting element is reduced to a first ratio lower than the reference brightness of the first light-emitting element, and Increase the brightness of the second light-emitting element to a second ratio higher than the reference brightness of the second light-emitting element. The first ratio is preset based on the first measured brightness of the plurality of first internal region pixels measured by an external measuring device and the second measured brightness of the first light-emitting element measured by the external measuring device, and The second ratio is preset based on the third measured brightness of the plurality of first internal region pixels measured by the external measuring device and the fourth measured brightness of the second light-emitting element measured by the external measuring device.

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