Display device

Abstract

A display device comprises: a printed circuit board; and a plurality of display modules arranged adjacent to each other in the length direction of the printed circuit board, each of the plurality of display modules comprising: a thin film transistor substrate; a plurality of micro LEDs arranged on the surface of the thin film transistor substrate; a flexible printed circuit board (FPCB), through which the printed circuit board and the thin film transistor substrate are connected; and a driver, which controls the plurality of micro LEDs and is arranged on the surface of the FPCB.

Description

Technical Field

[0001] The present disclosure relates to a display device having a simplified manufacturing process and improved signal efficiency. Background Art

[0002] A micro light emitting diode (LED) is a miniature inorganic light emitting structure that emits light without a color filter and a backlight. For example, a micro LED may refer to a miniature LED that is one-tenth the length of a conventional light emitting diode (LED) chip, one-hundredth the area of ​​a conventional LED chip, and has dimensions of 10 to 100 micrometers (μm) in width, length, and height.

[0003] The micro LEDs may be arranged on thin film transistors and controlled to operate through a plurality of thin film transistors.

[0004] Such a thin film transistor substrate can be used to drive displays of various sizes, which may include flexible devices, small wearable devices (e.g., wearable watches, etc.), and devices in the form of large televisions with a size of several tens of inches. For driving, the thin film transistor substrate can be connected to an external integrated circuit (IC) or driver IC that can apply current to the thin film transistor substrate.

[0005] Such an external IC or a driver IC may be arranged on rear surfaces of the plurality of thin film transistor substrates to reduce a gap between the plurality of thin film transistor substrates. Summary of the invention

[0006] Technical issues

[0007] Here, vias may be formed in the thin film transistor substrate to electrically connect the micro LEDs on the plurality of thin film transistor substrates and the external IC or driver IC on the rear surface of the plurality of thin film transistor substrates, respectively. However, the manufacturing process is complicated and has low manufacturing reliability.

[0008] Solution to the problem

[0009] The embodiments of the present disclosure overcome the above disadvantages and other disadvantages not described above. In addition, the present disclosure is not required to overcome the above disadvantages, and the embodiments of the present disclosure may not overcome any of the above problems.

[0010] The present disclosure provides a display device having a simplified manufacturing process and improved signal efficiency.

[0011] According to one embodiment of the present disclosure, a display device is provided, comprising: a printed circuit board; and a plurality of display modules, which are adjacently arranged in a first length direction of the printed circuit board, wherein each of the plurality of display modules may include: a thin film transistor substrate; a plurality of micro light emitting diodes (LEDs), which are arranged on a surface of the thin film transistor substrate; a flexible printed circuit board (FPCB), which connects the printed circuit board to the thin film transistor substrate; and a driver, which controls the plurality of micro LEDs, the driver being disposed on the surface of the FPCB.

[0012] The shape of the thin film transistor substrate may be a rectangle including a first side surface, a second side surface, a third side surface and a fourth side surface, the first side surface being disposed adjacent to the flexible printed circuit board, and a third length of the third side surface and a fourth length of the fourth side surface being longer than a first length of the first side surface and a second length of the second side surface.

[0013] The third side surfaces of each of the plurality of display modules may be respectively arranged parallel to each other.

[0014] A third side surface of a first display module among the plurality of display modules may contact a fourth side surface of a second display module adjacent to the first display module among the plurality of display modules.

[0015] The display device may further include a timing controller configured to provide an image signal to a driver of each of the plurality of display modules.

[0016] The timing controller may be disposed behind the plurality of display modules.

[0017] The timing controller may be disposed at a central portion of the plurality of display modules.

[0018] Each of the plurality of ports of the timing controller is connected to a driver of each of the plurality of display modules through an electrical path, and the timing controller is arranged to minimize a sum of lengths of the electrical paths.

[0019] The timing controller may be arranged in such a manner that a driver of each of the plurality of display modules is symmetrically arranged with respect to the timing controller.

[0020] The plurality of micro LEDs may be arranged such that a ratio of a first number of the plurality of micro LEDs arranged in the first direction of the first side surface to a second number of the plurality of micro LEDs arranged in the second direction of the third side surface is 1:9.

[0021] The display device may further include: an additional printed circuit board spaced apart from and parallel to the printed circuit board; and a plurality of additional display modules adjacently arranged in a second length direction of the additional printed circuit board.

[0022] The plurality of display modules and the plurality of additional display modules may be disposed opposite to each other.

[0023] Each of the plurality of display modules and each of the plurality of additional display modules may be disposed opposite to each other.

[0024] The plurality of display modules and the plurality of additional display modules may be disposed to contact each other, respectively.

[0025] The plurality of display modules and the plurality of additional display modules may be arranged in a row, respectively.

[0026] At least one of 1:1, 16:9, or 21:9 may be a ratio of horizontal lengths of the plurality of display modules to vertical lengths of the plurality of display modules and the plurality of additional display modules.

[0027] The plurality of micro LEDs may include a first micro LED emitting red light, a second micro LED emitting green light, and a third micro LED emitting blue light, the first to third micro LEDs forming one pixel of the display device.

[0028] The display device may further include: an arrangement plate configured to support the plurality of display modules and the plurality of additional display modules; and a housing configured to fix the plurality of display modules, the plurality of additional display modules, and the arrangement plate together.

[0029] Additional and / or other aspects and advantages of the present disclosure will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The above and / or other aspects of the present disclosure will become more apparent by describing certain embodiments of the present disclosure with reference to the accompanying drawings, in which:

[0031] Figure 1 is an exploded perspective view showing a display device according to an embodiment of the present disclosure;

[0032] Figure 2 is a front view showing a display panel according to an embodiment of the present disclosure;

[0033] Figure 3 is an enlarged view showing a display module according to an embodiment of the present disclosure;

[0034] Figure 4 is along Figure 3 A cross-sectional view taken along line CC;

[0035] Figure 5 is a block diagram showing a micro LED, a driver, a timing controller, and a processor according to an embodiment of the present disclosure;

[0036] Figure 6a is along Figure 2 A cross-sectional view taken along line AA;

[0037] Figure 6b is along Figure 2 A cross-sectional view taken along line BB;

[0038] Figure 7a and Figure 7b is an enlarged view showing a display module illustrating the operation of a plurality of display modules;

[0039] Figure 8 is a front view showing connections between a plurality of display modules and a timing controller;

[0040] Fig. 9 It is shown Figure 2 A front view of the various display areas of the display; and

[0041] Fig.10 is a front view showing a display panel according to another embodiment of the present disclosure. DETAILED DESCRIPTION

[0042] According to the following description of the embodiments with reference to the accompanying drawings, various advantages and features of the present disclosure and methods for achieving the same will become clear. However, the present disclosure can be modified in many different forms and should not be limited to the embodiments set forth herein. These embodiments can be provided so that the present disclosure will be comprehensive and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. In the accompanying drawings, for ease of description, the components are enlarged in size rather than the actual size, and the proportion of each component may be exaggerated or reduced.

[0043] It should be understood that in a configuration where one component is referred to as being "on" or "connected to" another component, one component may be directly on or directly connected to another component, or may be indirectly connected to another component with a third component interposed therebetween. However, it should be understood that in a configuration where one component is referred to as being "directly on" or "directly connected to" another component, one component may be on or connected to another component without any intervening third component interposed therebetween. Other expressions describing relationships between components, i.e., "between," "directly between," etc., should be similarly interpreted.

[0044] Terms such as "first", "second", etc. can be used to describe various components, but these components should not be interpreted as being limited to these terms. These terms are used to distinguish one component from another component. For example, without departing from the scope of the present disclosure, a "first" component can be named a "second" component, and the "second" component can also be similarly named a "first" component.

[0045] Unless otherwise clearly indicated, the singular forms used herein are intended to include the plural forms. It will also be understood that the term "includes" or "comprising" specifies the presence of features, numbers, steps, operations, components, parts or combinations thereof mentioned in the specification, but does not exclude the addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0046] Unless otherwise specified, the terms used in the embodiments have the same meanings as commonly understood by those skilled in the art to which the present disclosure belongs.

[0047] The display module according to the embodiment of the present disclosure can be applied to wearable devices, portable devices, handheld devices or electronic products or electronic devices that require a single unit in the form of various displays. The display module can also be applied to small display devices (e.g., monitors of personal computers, televisions, etc.) and large display devices (e.g., digital signage, electronic displays arranged with the aid of multiple components).

[0048] In the following, reference will be made to Figure 1 A configuration of a display device 1 according to an embodiment of the present disclosure is described.

[0049] Figure 1 is an exploded perspective view showing a display device according to an embodiment of the present disclosure.

[0050] The display device 1 can process an image signal obtained from an external source and visually display an image corresponding to the processed image signal. The display device 1 can be implemented in various forms such as a television, a monitor, a portable multimedia device, a portable communication device, etc. However, the form of the display device 1 is not limited to the above example, and can be any device that can receive, process and / or display an image according to an image signal.

[0051] like Figure 1 As shown, the display device 1 may include a protection plate 10 , a display panel 100 , a layout plate 30 , and a housing 40 .

[0052] The protective plate 10 may be disposed on the front surface of the display device 1 (in the Y-axis direction), and may protect the display panel 100 disposed behind the protective plate 10 from the external environment (eg, dust, water, etc.) outside the display device 1 .

[0053] The protection plate 10 may be made of a glass material having a thin thickness, and may be made of various materials according to the protection characteristics, cost characteristics, or other characteristics required of the protection plate 10 .

[0054] The display panel 100 may emit light to display an image based on an image signal received from an image signal source so as to be viewed from the front (Y-axis direction) of the display device 1 .

[0055] The display panel 100 may be configured to include display screens of various sizes and shapes according to the arrangement, size, and number of the display modules 110 and 120 .

[0056] The display modules 110 and 120 may also be applied to display devices such as monitors of personal computers, televisions, and digital signage, electronic displays arranged with the aid of a plurality of components.

[0057] Reference below Figure 2 A detailed configuration of the display panel 100 is described.

[0058] The arrangement plate 30 may be a plate on which the display panel 100 is disposed, and may be disposed behind the display panel 100 when viewed from the front of the display device 1. The arrangement plate 30 may be configured to be flat, and may be formed in various shapes and sizes according to the shape and size of the display panel 100, so that the size of the arrangement plate may substantially correspond to the size of the display panel 100.

[0059] Therefore, the arrangement plate 30 may be a back plate configured to support the display panel 100 so as to be disposed in parallel on the same plane.

[0060] In detail, the arrangement plate 30 may support the plurality of display modules 110 and the plurality of additional display modules 120 configuring the display panel 100 so as to be arranged in parallel on the same plane.

[0061] Therefore, the plurality of display modules 110 and the plurality of additional display modules 120 may have the same height and the display screen may thus have uniform brightness.

[0062] The housing 40 may form an exterior appearance of the display device 1 , may be disposed behind the arrangement plate 30 when viewed from the front of the display device 1 , and may stably fix the plurality of display modules 110 , the plurality of additional display modules 120 , and the arrangement plate 30 .

[0063] Therefore, the housing 40 may prevent various components included in the display device 1 from being exposed to the environment around the display device 1 , and may protect various components included in the display device 1 from external impact or other destructive influences.

[0064] In the following, reference Figures 2 to 5 A detailed configuration of the display panel 100 is described.

[0065] Figure 2 is a front view showing a display panel 100 according to an embodiment of the present disclosure; Figure 3 is an enlarged view showing one display module 110 according to an embodiment of the present disclosure; Figure 4 is along Figure 3 A cross-sectional view taken along line CC of ; and Figure 5 is a block diagram illustrating a micro light emitting diode (LED) 130 , a driver 50 , a timing controller 20 , and a processor 80 according to an embodiment of the present disclosure.

[0066] refer to Figure 2 The display panel 100 may include: a printed circuit board 61; a plurality of display modules 110, which are continuously arranged in the length direction of the printed circuit board 61; an additional printed circuit board 62, which is spaced apart from and parallel to the printed circuit board 61; and a plurality of additional display modules 120, which are continuously arranged in the length direction of the additional printed circuit board 62.

[0067] Here, the length direction of the printed circuit board 61 and the additional printed circuit board 62 may refer to a direction (X-axis direction) in which each of the printed circuit board 61 and the additional printed circuit board 62 has a longer length.

[0068] The first to n-th display modules 110-1 to 110-n having the same configuration may be continuously arranged in a length direction of the printed circuit board 61. Here, n may refer to a natural number.

[0069] Therefore, the display screen implemented in the display panel 100 may be variously configured based on the number of arranged display modules 110 and the shape of each display module 110 .

[0070] That is, since each of the display modules 110 - 1 to 110 - n among the plurality of display modules 110 may have the same configuration, display screens of various sizes may be implemented through a single manufacturing process in which the plurality of display modules 110 are arranged.

[0071] The printed circuit board (PCB) 61 may include circuits patterned on a board serving as an insulator, and may be electrically and physically connected with the plurality of display modules 110 through a flexible printed circuit board (FPCB) 71 .

[0072] Therefore, the printed circuit board 61 may be electrically connected to the plurality of display modules 110 as well as the timing controller 20 and the processor 80 described below.

[0073] In addition, the printed circuit board 61 may transmit a signal obtained from the timing controller 20 or the processor 80 to the plurality of display modules 110. Alternatively, the printed circuit board 61 may transmit a signal obtained from the plurality of display modules 110 to the timing controller 20 or the processor 80.

[0074] In addition, the printed circuit board 61 may be formed in a rectangular shape having a length dimension longer than its width or height direction. For example, the length of the printed circuit board 61 may correspond to the sum of the lengths of a plurality of display modules 110 arranged adjacent to the printed circuit board 61 in the length direction of the printed circuit board 61.

[0075] Furthermore, the plurality of display modules 110 may be continuously arranged in the length direction of the printed circuit board 61 , and thus the size of the printed circuit board 61 may be a standard for arranging the plurality of display modules 110 .

[0076] refer to Figure 3 , each of the multiple display modules 110 may include: a thin film transistor substrate 111; a plurality of micro LEDs 130 arranged on a surface of the thin film transistor substrate 111; and a flexible printed circuit board (FPCB) 71, which connects the printed circuit board 61 to the thin film transistor substrate 111 and has a driver 50 for controlling the plurality of micro LEDs 130 disposed on one surface.

[0077] The thin film transistor substrate 111 may stably fix the plurality of micro LEDs 130 arranged on one flat surface. Here, the thin film transistor substrate 111 may be formed as any one of a glass substrate, a flexible substrate, and a plastic substrate.

[0078] In detail, the thin film transistor substrate 111 may be formed as a glass substrate on which an electrode layer (or a thin film transistor (TFT) layer) including a plurality of thin film transistors 112 is coupled. Therefore, the driver 50 driving the thin film transistor substrate 111 may be provided and operated on the thin film transistor substrate 111 formed of the glass substrate and the electrode layer. That is, the chip-shaped driver 50 may be implemented in the form of a chip on glass (COG) on the thin film transistor substrate 111.

[0079] In addition, the thin film transistor substrate 111 may be formed as a circuit board in which a circuit is formed on a flexible board. Therefore, the driver 50 that drives the thin film transistor substrate 111 may be provided and operated on the thin film transistor substrate 111 formed as a circuit board. That is, the chip-shaped driver 50 may be implemented in the form of a chip on board (COB) on the thin film transistor substrate 111.

[0080] In addition, only the driver 50 may be disposed on the thin film transistor substrate 111 ; however, the driver 50 and various components in a chip shape may be disposed on the thin film transistor substrate 111 .

[0081] like Figure 4 As shown, the thin film transistor substrate 111 may include a plurality of thin film transistors 112 for controlling and driving a plurality of micro LEDs 130 disposed on one surface thereof.

[0082] The thin film transistors 112 may be formed in the thin film transistor substrate 111 , and each of the thin film transistors 112 may be electrically connected to one micro LED 130 disposed on a top surface of the thin film transistor substrate 111 .

[0083] Therefore, each of the thin film transistors 112 can selectively drive a corresponding micro LED 130 by controlling a current flowing into the micro LED 130. That is, each of the thin film transistors 112 can be used as a switch to control a pixel, which can be a basic unit of a display.

[0084] In addition, the thin film transistor substrate 111 may have: a first side surface 111a, which is arranged adjacent to the flexible printed circuit board 71; a second side surface 111b, which is arranged opposite to the first side surface 111a; and a third side surface 111c and a fourth side surface 111d, which are respectively interposed between the first side surface 111a and the second side surface 111b and connect the first side surface 111a to the second side surface 111b, and are formed to be longer than the first side surface 111a and the second side surface 111b.

[0085] That is, the shape of the thin film transistor substrate 111 may be a rectangle having first to fourth side surfaces 111 a , 111 b , 111 c , and 111 d .

[0086] For example, the first and second side surfaces 111a and 111b may be upper and lower ends of the thin film transistor substrate 111. In addition, the first and second side surfaces 111a and 111b may be side ends of the thin film transistor substrate 111 formed parallel to the third and fourth side surfaces 111c and 111d.

[0087] Here, the first side surface 111 a may be a side surface on which the printed circuit board 61 is disposed adjacently thereto, and the second side surface 111 b may be a side surface on which the printed circuit board 61 is not disposed.

[0088] The micro LED 130 may be formed of an inorganic light emitting material having a size of 100 μm or less in terms of width, length, and height, and may be disposed on the thin film transistor substrate 111 to emit light by itself.

[0089] The micro LEDs 130 may form one pixel 130 , and a first micro LED 131 emitting red light, a second micro LED 132 emitting green light, and a third micro LED 133 emitting blue light, which may be sub-pixels, may be arranged in one pixel 130 .

[0090] The sub-pixels 131, 132, and 133 may be arranged in a matrix or sequentially in one pixel 130. However, the above arrangement of the sub-pixels 131, 132, and 133 is merely exemplary, and the sub-pixels 131, 132, and 133 may be arranged relative to each other in each pixel 130 in various forms.

[0091] The micro LED 130 may have operating characteristics of high response speed, low power, and high brightness. In addition, the micro LED 130 may have greater efficiency in converting electricity into photons than pixels of a conventional liquid crystal display (LCD) or an organic light emitting diode (OLED).

[0092] Thus, the micro LEDs 130 can have a higher "brightness per watt" compared to conventional LCD and OLED displays. Thus, the micro LEDs 130 can produce a brightness equal to that of a conventional LED or OLED, but using only half the energy or power.

[0093] In addition, the micro LED 130 can provide high resolution, excellent color, contrast and brightness, accurately represent a wide range of colors, and realize a clear screen even in bright sunlight. In addition, the micro LED 130 can resist aging and can generate less heat, thereby ensuring long durability without deformation.

[0094] The plurality of micro LEDs 130 disposed on one surface of the thin film transistor substrate 111 may be arranged to have a first pitch P1 or distance therebetween. That is, the plurality of micro LEDs 130 may be arranged to have the same first pitch P1 therebetween, and the plurality of micro LEDs 130 may thus achieve uniform brightness across the entire display screen.

[0095] The driver 50 may be provided on the flexible printed circuit board 71 to control the plurality of micro LEDs 130 arranged on one thin film transistor substrate 111 for each line.

[0096] The driver 50 may include a plurality of driver circuits, and each driver 50 may be disposed on the flexible printed circuit board 71 or individually disposed on the flexible printed circuit boards.

[0097] Therefore, the number of drivers 50 may be equal to the number of thin film transistor substrates 111. That is, one driver 50 may be disposed on one thin film transistor substrate 111.

[0098] In addition, reference Figure 5 , the driver 50 may include a data driver 51 and a gate driver 52 .

[0099] The data driver 51 may provide a control signal to sequentially control a plurality of horizontal lines formed on the front surface of the thin film transistor substrate 111 one line per image frame, and may transmit the provided control signal to each of the micro LEDs 130 connected to the corresponding line.

[0100] The gate driver 52 may provide a control signal to sequentially control a plurality of vertical lines formed on the front surface of the thin film transistor substrate 111 one line per image frame, and may transmit the provided control signal to each of the micro LEDs 130 connected to the corresponding line.

[0101] Therefore, the plurality of micro LEDs 130 may be controlled using the data driver 51 and the gate driver 52 .

[0102] The timing controller 20 may provide the image signal to the respective drivers 50 of the plurality of display modules 110. That is, the timing controller 20 may control the plurality of display modules 110 by controlling the plurality of drivers 50.

[0103] In detail, the timing controller 20 can obtain input signals IS, horizontal synchronization signals Hsync, vertical synchronization signals Vsync, main clock signals MCLK, etc. from the processor 80; can provide image data signals, scanning control signals, data control signals, light-emitting control signals of the first to third micro LEDs 131, 132 and 133, etc.; and can provide these signals to the driver 50.

[0104] In addition, in order to control the brightness of each of the first to third micro LEDs 131, 132 and 133, the timing controller 20 can use at least one of a pulse width modulation (PWM) technology that varies the duty cycle of the driving current (Id) or a pulse amplitude modulation (PAM) technology that varies the amplitude of the driving current (Id).

[0105] For example, using a configuration of a pulse width modulation (PWM) signal, the micro LED 130 may emit light at a higher brightness as the duty cycle (or driving time) of the driving current is longer, and the duty cycle (%) may be determined based on a dimming value input from the processor 80 .

[0106] Meanwhile, by using the configuration of a pulse amplitude modulation (PAM) signal, the micro LED 130 can emit light with high brightness as the amplitude of the driving current increases. Through this configuration, various colors and gradations of an image can be expressed.

[0107] The processor 80 may be disposed on one side of the display device 1 , and drive and transmit a command signal for controlling the plurality of micro LEDs 130 to the timing controller 20 .

[0108] Here, the processor 80 may include at least one of a central processing unit (CPU), a controller, an application processor (AP), a communication processor (CP), or an advanced RISC machine (ARM) processor.

[0109] refer to Figure 4 The flexible printed circuit board 71 may include a conductive circuit having good conductivity and formed on an insulator made of a flexible material, and may connect the printed circuit board 61 and the thin film transistor substrate 111 to each other. The driver 50 may be disposed on one surface of the flexible printed circuit board 71.

[0110] In detail, the flexible printed circuit board 71 may be disposed on the first side surface 111 a of the thin film transistor substrate 111 , and may electrically and physically connect the thin film transistor substrate 111 and the printed circuit board 61 to each other.

[0111] Therefore, the driver 50 driving the plurality of micro LEDs 130 may be disposed on the first side surface 111a of the thin film transistor substrate 111. In this way, the distance between the plurality of display modules 110 may be minimized or eliminated, and thus a substantially seamless and borderless display screen may be realized.

[0112] Furthermore, in order to realize such a seamless display screen, it is not necessary to dispose the driver 50 on the rear surface of the thin film transistor substrate 111. Therefore, a simple configuration can be realized and the manufacturing cost can be reduced.

[0113] That is, the driver 50 driving the plurality of micro LEDs 130 may be disposed on the first side surface 111a of the thin film transistor substrate 111. Due to this configuration, the plurality of display modules 110 may be simply and sequentially arranged in the length direction of the printed circuit board 61 to implement a display screen.

[0114] In addition, a plurality of flexible printed circuit boards 71 ​​may be formed, and each flexible printed circuit board 71 may be disposed on the first side surface 111 a of one thin film transistor substrate 111 .

[0115] Therefore, the number of the flexible printed circuit boards 71 ​​may be equal to the number of the thin film transistor substrates 111 .

[0116] That is, a display module 110 can be configured as a unit including: a thin film transistor substrate 111 on which a plurality of micro LEDs 130 are arranged; a flexible printed circuit board 71 disposed on a first side surface 111a of the thin film transistor substrate 111; and a driver 50 disposed on a surface of the flexible printed circuit board 71.

[0117] In the following, reference Figure 2 , Figure 6a and Figure 6b A detailed arrangement configuration of the display panel 100 is described.

[0118] Figure 6a is along Figure 2 A cross-sectional view taken along line AA of FIG. Figure 6b is along Figure 2 A cross-sectional view taken along line BB.

[0119] refer to Figure 2 , the plurality of display modules 110 may be sequentially arranged in the length direction of the printed circuit board 61. Here, the plurality of display modules 110 may all have the same configuration.

[0120] In detail, a plurality of display modules 110 , ie, identical display modules 110 - 1 to 110 - n , may be continuously arranged along one end portion of the printed circuit board 61 .

[0121] For example, a second display module 110-2 having the same configuration as the first display module 110-1 may be disposed on one side of the first display module 110-1. Similarly, a third display module 110-3 having the same configuration as the second display module 110-2 may be disposed on one side of the second display module 110-2. Thus, the display modules 110-1 to 110-n may be disposed in sequence adjacent to each other.

[0122] In this manner, the nth display module 110 - n may be disposed at an end portion opposite to an end portion of the printed circuit board 61 at which the first display module 110 - 1 is disposed.

[0123] In other words, the first to nth display modules may be sequentially arranged in the length direction of the printed circuit board 61. Therefore, a display screen may be implemented using a plurality of display modules 110 all having the same configuration, and thus, the manufacturing cost of the display device 1 may be significantly reduced.

[0124] Here, the third side surfaces 111c and the fourth side surfaces 111d of the plurality of display modules 110 may be arranged parallel to each other, respectively. Therefore, the plurality of display modules 110 may be arranged parallel to each other, the horizontal and vertical distances and arrangements of the plurality of micro LEDs 130 included in the plurality of display modules 110 may be uniform, and thus the display device 1 may achieve uniform brightness.

[0125] In detail, Figure 6a As shown, the first thin film transistor substrate 111 - 1 of the first display module 110 - 1 and the second thin film transistor substrate 111 - 2 of the second display module 110 - 2 may be disposed in parallel with each other.

[0126] In more detail, the fourth side surface 111d-1 of the first thin film transistor substrate 111-1 and the third side surface 111c-2 of the second thin film transistor substrate 111-2 may be disposed parallel to each other using a spacing space S having a third distance D3.

[0127] Therefore, the first outermost micro LED 130-1 disposed at the outermost of the first thin film transistor substrate 111-1 may be disposed to have a second interval P2 with the second outermost micro LED 130-2 disposed at the outermost of the second thin film transistor substrate 111-2.

[0128] Here, the second spacing P2 can be equal to the sum of the following items: the first distance D1, which is the distance between the fourth side surface 111d-1 of the first thin film transistor substrate 111-1 and the first outermost micro LED 130-1; the second distance D2, which is the distance between the third side surface 111c-2 of the second thin film transistor substrate 111-2 and the second outermost micro LED 130-2; and the third distance D3 of the spacing space S.

[0129] In addition, the second pitch P2 may be equal to the first pitch P1 which is a distance between the plurality of micro LEDs 130 arranged on one thin film transistor substrate 111 .

[0130] Therefore, even in a configuration where the plurality of display modules 110-1 and 110-2 are arranged together, the distances between the plurality of micro LEDs 130 may all be equal to each other. Therefore, the display screen may achieve uniform brightness while having a seamless feel.

[0131] Meanwhile, the non-conductive resin composition F including a black pigment for shielding may fill the spacing space S. Therefore, even in a configuration in which the spacing space S is formed between the plurality of display modules 110 , a seam may be substantially unnoticeable when viewed from the outside of the display device 1 .

[0132] Furthermore, among the plurality of display modules, the third side surface 111 c of one display module may be in contact with the fourth side surface 111 d of an adjacent display module.

[0133] For example, the third side surface 111 c - 2 of the second display module 110 - 2 may contact / abut against the fourth side surface 111 d - 1 of the first display module 110 - 1 adjacent to the second display module 110 - 2 .

[0134] Therefore, a separation space S may not be formed between the first display module 110 - 1 and the second display module 110 - 2 , thereby achieving seamlessness between the plurality of display modules.

[0135] At the same time, refer again Figure 2 , the additional printed circuit board 62 may be disposed to be spaced apart from and in parallel with the printed circuit board 61. The additional printed circuit board 62 has the same configuration as the above-described printed circuit board 61, and thus a redundant description thereof is omitted.

[0136] The additional display modules 120 may be sequentially arranged in the length direction of the additional printed circuit board 62. Here, the additional display modules 120 respectively have the same configuration as the above-described display modules 110 except for being arranged on the additional printed circuit board 62, and thus a redundant description thereof is omitted.

[0137] refer to Figure 2 , the plurality of additional display modules 120 may be sequentially arranged in the length direction of the additional printed circuit board 62. Here, the plurality of additional display modules 120 may all have the same configuration.

[0138] In detail, a plurality of additional display modules 120 , ie, identical additional display modules 120 - 1 to 120 - n, may be continuously arranged along one end portion of the printed circuit board 62 .

[0139] For example, a second additional display module 120-2 having the same configuration as the first additional display module 120-1 may be disposed at one side of the first additional display module 120-1. Similarly, a third additional display module 120-3 having the same configuration as the second additional display module 120-2 may be disposed at one side of the second additional display module 120-2.

[0140] In this manner, the nth additional display module 120-n may be disposed at an end opposite to the end of the additional printed circuit board 62 at which the first additional display module 120-1 is disposed. Here, n may refer to a natural number.

[0141] The plurality of additional display modules 120 may be disposed opposite to the plurality of display modules 110, respectively. Figure 2As shown, one display screen may be implemented by arranging a plurality of display modules 110 and a plurality of additional display modules 120 between the printed circuit board 61 and the additional printed circuit board 62 .

[0142] Therefore, one display screen may be implemented by arranging a plurality of display modules 110 and a plurality of additional display modules 120 manufactured in the same manner.

[0143] In addition, a display screen can be implemented by simply arranging a plurality of display modules 110 and a plurality of additional display modules 120 manufactured in the same manner to have changed arrangement directions and arrangement columns. Therefore, the display panel 100 can have a simplified manufacturing process.

[0144] In addition, a plurality of display modules 110 and a plurality of additional display modules 120 may be respectively disposed opposite to each other.

[0145] For example, Figure 6b As shown, the first thin film transistor substrate 111 - 1 of the first display module 110 - 1 and the first additional thin film transistor substrate 121 - 1 of the first additional display module 120 - 1 may be disposed in alignment with each other.

[0146] In more detail, the second side surface 111 b - 1 of the first thin film transistor substrate 111 - 1 and the second side surface 121 b - 1 of the first additional thin film transistor substrate 121 - 1 may be disposed in alignment and parallel to face each other.

[0147] Here, the first side surfaces 111a-1 and 121a-1 may refer to side surfaces where the printed circuit board 61 and the additional printed circuit board 62 are adjacently disposed, respectively; and the second side surfaces 111b-1 and 121b-1 may refer to side surfaces where the printed circuit board 61 and the additional printed circuit board 62 are not disposed, respectively.

[0148] That is, the second side surfaces 111 b of the plurality of display modules 110 may be disposed to correspond to the second side surfaces 121 b of the plurality of additional display modules 120 , respectively.

[0149] Thus, a plurality of display modules 110 and a plurality of additional display modules 120 may be arranged to implement a bonded display screen.

[0150] In addition, the second side surface 111 b - 1 of the first thin film transistor substrate 111 - 1 and the second side surface 121 b - 1 of the first additional thin film transistor substrate 121 - 1 may be disposed parallel to each other using a spacing space S′.

[0151] Therefore, the third outermost micro LED 130 - 3 disposed at the outermost of the first thin film transistor substrate 111 - 1 may be disposed to have a third interval P3 with the fourth outermost micro LED 130 - 4 disposed at the outermost of the first additional thin film transistor substrate 121 - 1 .

[0152] Here, the third spacing P3 can be equal to the sum of the following items: a fourth distance D4, which is the distance between the second side surface 111b-1 of the first thin film transistor substrate 111-1 and the third outermost micro-LED 130-3; a fifth distance D5, which is the distance between the second side surface 121b-1 of the first additional thin film transistor substrate 121-1 and the fourth outermost micro-LED 130-4; and a sixth distance D6 of the spacing space S′.

[0153] In addition, the third pitch P3 may be equal to the first pitch P1 which is a distance between the plurality of micro LEDs 130 arranged on one thin film transistor substrate 111 .

[0154] Therefore, even in a configuration where a plurality of display modules 110 and a plurality of additional display modules 120 are arranged together, distances between the plurality of micro LEDs 130 may all be equal to each other. Therefore, the display screen may achieve uniform brightness while having a seamless feel.

[0155] Meanwhile, the non-conductive resin composition F including a black pigment for shielding may fill the spacing space S′. Therefore, even in a configuration where the spacing space S′ is formed between the plurality of display modules 110 and the plurality of additional display modules 120 , the seam may not be perceived from the perspective of a viewer of the display device.

[0156] In addition, the plurality of display modules 110 and the plurality of additional display modules 120 may be disposed to contact each other, respectively. That is, the plurality of display modules 110 and the plurality of additional display modules 120 may be disposed adjacently, respectively, so as not to form a separation space S′ therebetween.

[0157] Therefore, the plurality of display modules 110 and the plurality of additional display modules 120 may implement a seamlessly bonded display screen.

[0158] Furthermore, the plurality of display modules 110 and the plurality of additional display modules 120 may be arranged in an aligned configuration, respectively.

[0159] For example, Figure 2 As shown, the first display module 110 - 1 may be disposed in parallel with the first additional display module 120 - 1 , and the second display module 110 - 2 may be disposed aligned with the second additional display module 120 - 2 .

[0160] Similarly, the nth display module 110-n may be arranged to be aligned with the nth additional display module 120-n. Here, n may refer to a natural number. Therefore, the number of the plurality of display modules 110 and the number of the plurality of additional display modules 120 may be equal to each other.

[0161] The plurality of display modules 110 and the plurality of additional display modules 120 may be arranged in a row, respectively, and the display device 1 may thus implement a display screen in a rectangular shape.

[0162] Furthermore, physical differences and signal differences between display modules adjacent to each other may be minimized to correspondingly minimize line mura between the display modules.

[0163] In the following, reference Figure 7a and Figure 7b The operation of the display panel 100 according to the embodiment of the present disclosure is described.

[0164] Figure 7a and Figure 7b 1 is an enlarged view showing some of the display modules 110 - 1 , 110 - 2 , 120 - 1 , and 120 - 2 to illustrate the operation of the plurality of display modules 110 .

[0165] like Figure 7a As shown, multiple display modules 110 and multiple additional display modules 120 can be arranged adjacent to and opposite to each other, wherein the printed circuit board 61 and the additional printed circuit board 62 can be respectively disposed at the upper and lower ends (i.e., the first side surfaces) of the multiple display modules 110 and the multiple additional display modules 120.

[0166] Then, the processor 80 may simultaneously send one display screen signal to the printed circuit board 61 and the additional printed circuit board 62. The printed circuit board 61 may send the signal to the plurality of display modules 110, and the additional printed circuit board 62 may send the signal to the plurality of additional display modules 120.

[0167] That is, one processor 80 may send a signal to the timing controller 20, and the timing controller 20 may propagate the signal to the printed circuit board 61 and the additional printed circuit board 62, thereby realizing a unified display screen.

[0168] For example, the signal sent to the printed circuit board 61 can be simultaneously sent to the first driver 50-1 and the second driver 50-2 set on the flexible printed circuit board 71; and the signal sent to the additional printed circuit board 62 can be simultaneously sent to the first additional driver 51-1 and the second additional driver 51-2 set on the additional flexible printed circuit board 72.

[0169] Here, the additional drivers 51 - 1 and 51 - 2 may have the same configuration as the above-described drivers 50 , 50 - 1 , and 50 - 2 , and thus a redundant description thereof is omitted.

[0170] Then, the first driver 50-1 may operate the first display module 110-1, and the second driver 50-2 may operate the second display module 110-2. Simultaneously, the first additional driver 51-1 may operate the first additional display module 120-1, and the second additional driver 51-2 may operate the second additional display module 120-2.

[0171] Here, the signals may be transmitted more quickly to the side surfaces of the display modules disposed closer to the driver, respectively. Therefore, the signals may be transmitted slightly slower to the surfaces (ie, the second side surfaces) where the plurality of display modules 110 and the plurality of additional display modules 120 are adjacent to each other.

[0172] However, even in this configuration, the plurality of display modules 110 and the plurality of additional display modules 120 may be arranged symmetrically to each other, and thus, signals may be uniformly transmitted.

[0173] As such, signals are transmitted symmetrically, and thus, a difference in signal transmission may not be noticeable near a surface (ie, the second side surface) where the plurality of display modules 110 and the plurality of additional display modules 120 are adjacent to each other.

[0174] That is, such an arrangement configuration of the plurality of display modules 110 and the plurality of additional display modules 120 may improve the efficiency of signal transmission.

[0175] For example, Figure 7b As shown, in a configuration where the signal transmitted from the display screen is a signal indicating brightness, the plurality of display modules 110 and the plurality of additional display modules 120 disposed adjacent to the printed circuit board 61 and the additional printed circuit board 62, respectively, may appear white.

[0176] Furthermore, signals may be transmitted more slowly to side surfaces of the display modules disposed farther from the printed circuit board 61 and the additional printed circuit board 62, respectively. Therefore, the plurality of display modules 110 and the plurality of additional display modules 120 may appear black.

[0177] However, even in this configuration, the plurality of display modules 110 and the plurality of additional display modules 120 may be symmetrically arranged, and thus, a user may not recognize any difference in brightness between the plurality of display modules 110 and the plurality of additional display modules 120 .

[0178] In addition, the plurality of display modules 110 and the plurality of additional display modules 120 may achieve the same level of brightness, and thus, the user may not recognize the gaps between the plurality of display modules 110 and the plurality of additional display modules 120. Therefore, the display screen may be seamlessly controlled by signals.

[0179] That is, one display screen may be implemented through such a configuration of a plurality of display modules 110 and a plurality of additional display modules 120 to achieve a simplified manufacturing process, seamlessness, and improved signal transmission efficiency.

[0180] In the following, reference Figure 8 The detailed configuration of the timing controller 20 is described.

[0181] Figure 8 is a front view showing connection between the display modules 110 and 120 and the timing controller 20 .

[0182] The timing controller 20 may be connected to the driver 50 and the additional driver 51 through electrical paths 90 and 91 .

[0183] Here, the electrical paths 90 and 91 may specify the shortest paths between the timing controller 20, the driver 50, and the additional driver 51. In addition, the timing controller 20 may not be limited to being directly connected to the driver 50 and the additional driver 51, and may be connected to the driver 50 and the additional driver 51 through the printed circuit board 61 and the additional printed circuit board 62.

[0184] Therefore, a signal transmitted from one timing controller 20 may be transmitted to the driver 50 and the additional driver 51 through the plurality of electrical paths 90 and 91 , and the plurality of display modules 110 and the plurality of additional display modules 120 may be controlled and operated.

[0185] The number of electrical paths 90 , 91 may be equal to the number of drivers 50 and additional drivers 51 .

[0186] The timing controller 20 may be disposed at a central portion of the backs of the plurality of display modules 110 and the plurality of additional display modules 120 .

[0187] Furthermore, the timing controller 20 may be arranged to minimize the sum of the distances between the timing controller 20 and the respective drivers 50 of the plurality of display modules 110. Furthermore, the timing controller 20 may be arranged to minimize the sum of the distances between the timing controller 20 and the respective additional drivers 51 of the plurality of additional display modules 120. Thus, each of the plurality of ports of the timing controller is connected to the driver of each of the plurality of display modules through an electrical path, and the timing controller is arranged to minimize the sum of the lengths of the electrical paths.

[0188] Furthermore, the timing controller 20 may be disposed in such a manner that the respective drivers 50 of the plurality of display modules 110 are symmetrical to each other with respect to the timing controller 20 .

[0189] Similarly, the timing controller 20 may be disposed in such a manner that the respective drivers 50 of the plurality of display modules 110 and the respective additional drivers 51 of the plurality of additional display modules 120 are symmetrical to each other with respect to the timing controller 20 .

[0190] Therefore, considering that each length of the electrical paths 90 and 91 is proportional to the resistance of the signal, the timing controller 20 can transmit the same signal to all the drivers 50 and the additional driver 51 through the electrical paths 90 and 91 having the same length without any signal loss.

[0191] Therefore, one display screen can be controlled by providing one timing controller 20 instead of a plurality of timing controllers.

[0192] That is, the driver 50 controlling the plurality of display modules 110 and the additional driver 51 controlling the plurality of additional display modules 120 may be disposed symmetrically to each other. Therefore, only one timing controller 20 may be disposed to control all the drivers 50 and the additional drivers 51 disposed in the display device 1.

[0193] Therefore, the utilization rate of the timing controller 20 can be maximized. Thus, one timing controller 20 can be used, thereby reducing its manufacturing cost and manufacturing process.

[0194] In the following, reference Figure 3 and Fig. 9 Display panels 100 of different sizes are described.

[0195] Fig. 9 It is shown Figure 2 Front view of the various display areas.

[0196] The plurality of micro LEDs 130 may be arranged such that a ratio of the number of micro LEDs arranged in the length direction of the first side surface 111 a to the number of micro LEDs arranged in the length direction of the third side surface 111 c is 1:9.

[0197] Therefore, at least one of 1:1, 16:9, or 21:9 may be a ratio of the horizontal lengths W1 , W2 , and W3 of the plurality of display modules 110 to the vertical lengths H1 of the plurality of display modules 110 and the plurality of additional display modules 120 .

[0198] For example, multiple micro LEDs 130 can realize a 1:1 forward display screen A1 in the following configuration: the ratio of the number of micro LEDs arranged in the length direction of the first side surface 111a to the number of micro LEDs arranged in the length direction of the third side surface 111c is 1:9; and 18 columns of display modules 110 and additional display modules 120 are arranged in the length direction of the printed circuit board 61.

[0199] Similarly, multiple micro LEDs 130 can realize a 16:9 4k or 8k display screen A2 in the following configuration: the ratio of the number of micro LEDs arranged in the length direction of the first side surface 111a to the number of micro LEDs arranged in the length direction of the third side surface 111c is 1:9; and 32 columns of display modules 110 and additional display modules 120 are arranged in the length direction of the printed circuit board 61.

[0200] In addition, multiple micro LEDs 130 can realize a 21:9 movie display screen A3 in the following configuration: the ratio of the number of micro LEDs arranged in the length direction of the first side surface 111a to the number of micro LEDs arranged in the length direction of the third side surface 111c is 1:9; and 42 columns of display modules 110 and additional display modules 120 are arranged in the length direction of the printed circuit board 61.

[0201] That is, in a configuration where the ratio of the number of micro LEDs arranged in the horizontal direction to the vertical direction is 1:9, the plurality of micro LEDs 130 can realize display screens of various sizes by producing display modules 110 having the same configuration and only changing the number of arranged display modules.

[0202] Therefore, the display panels 100 of various sizes can be produced with greatly reduced manufacturing costs.

[0203] In the following, reference Fig.10 A configuration of a display panel according to another embodiment of the present disclosure is described.

[0204] Fig.10 is a front view showing a display panel 100 ′ according to another embodiment of the present disclosure.

[0205] Here, the same reference numerals are used to refer to the same components as described above. The timing controller 20, the printed circuit board 61, the flexible printed circuit board 70, and the plurality of display modules 110 have the same configuration as described above, and thus a redundant description thereof is omitted.

[0206] Unlike the previous embodiment, the display panel 100 ′ may be configured as one unit including a printed circuit board 61 and a plurality of display modules 110 sequentially arranged in a length direction of the printed circuit board 61 .

[0207] That is, the display panel 100 ′ may be implemented without disposing the additional printed circuit board 62 and the plurality of additional display modules 120 thereon.

[0208] Therefore, since the display panel 100' has the least number of components, the display panel 100' may be implemented to have the second height H2. Therefore, the display panel 100' may be formed in various sizes according to the configuration of the present disclosure.

[0209] In the above, although different embodiments of the present disclosure are described separately, each embodiment does not need to be implemented separately, and the configuration and operation of each embodiment may be implemented in combination with at least one other embodiment.

[0210] In addition, although the embodiments of the present disclosure have been shown and described above, the present disclosure is not limited to the above-mentioned specific embodiments, but various modifications can be made by those skilled in the art to which the present disclosure belongs without departing from the gist of the present disclosure as disclosed in the appended claims. These modifications should also be understood to fall within the scope and spirit of the present disclosure.

Claims

1. A display device, comprising: a first printed circuit board; A plurality of first display modules are arranged adjacent to each other in the length direction of the first printed circuit board, wherein each of the plurality of first display modules comprises: a first thin film transistor substrate; A plurality of first micro light emitting diodes are arranged on a surface of the first thin film transistor substrate; a first flexible printed circuit board, connecting the first printed circuit board to the first thin film transistor substrate; and A first driver, controlling the plurality of first micro-LEDs, wherein the first driver is disposed on a surface of the first flexible printed circuit board; a second printed circuit board; and A plurality of second display modules are arranged adjacent to each other in the length direction of the second printed circuit board, wherein each of the plurality of second display modules comprises: a second thin film transistor substrate; A plurality of second micro light emitting diodes are arranged on a surface of the second thin film transistor substrate; a second flexible printed circuit board, connecting the second printed circuit board to the second thin film transistor substrate; and a second driver, controlling the plurality of second micro light emitting diodes, wherein the second driver is disposed on a surface of the second flexible printed circuit board, The plurality of first display modules and the plurality of second display modules are arranged between the first printed circuit board and the second printed circuit board, and the first edges of the plurality of first display modules are aligned with the second edges of the plurality of second display modules in the width direction of the display device.

2. The display device according to claim 1, wherein: The shape of each of the first thin film transistor substrate and the second thin film transistor substrate is a rectangle including a first side surface, a second side surface, a third side surface, and a fourth side surface, wherein the first side surface of the first thin film transistor substrate is disposed adjacent to the first flexible printed circuit board, and the first side surface of the second thin film transistor substrate is disposed adjacent to the second flexible printed circuit board, and The third length of the third side surface and the fourth length of the fourth side surface are longer than the first length of the first side surface and the second length of the second side surface.

3. The display device according to claim 2, wherein: The third side surfaces of the plurality of first display modules are arranged parallel to each other, and the third side surfaces of the plurality of second display modules are arranged parallel to each other.

4. The display device according to claim 3, wherein: A third side surface of one of the plurality of first display modules contacts a fourth side surface of another display module adjacent to the one of the plurality of first display modules, and The third side surface of one of the plurality of second display modules contacts the fourth side surface of another display module adjacent to the one of the plurality of second display modules.

5. The display device according to claim 1, further comprising: The timing controller is configured to provide an image signal to a first driver of each of the plurality of first display modules and a second driver of each of the plurality of second display modules.

6. The display device according to claim 5, wherein: The timing controller is disposed behind the plurality of first display modules and the plurality of second display modules.

7. The display device according to claim 6, wherein: The timing controller is disposed at a central portion of the display device.

8. The display device according to claim 6, wherein: The plurality of ports of the timing controller are respectively connected to the first drivers of the plurality of first display modules and the second drivers of the plurality of second display modules through electrical paths, and The timing controller is configured to minimize the sum of the lengths of the electrical paths.

9. The display device according to claim 6, wherein: The timing controller is arranged in such a manner that the first drivers of the plurality of first display modules and the second drivers of the plurality of second display modules are arranged symmetrically with respect to the timing controller.

10. The display device according to claim 2, wherein: The plurality of first micro-LEDs are arranged such that a ratio of a first number of the plurality of first micro-LEDs arranged in the first direction of the first side surface to a second number of the plurality of first micro-LEDs arranged in the second direction of the third side surface is 1:9, and Among them, the multiple second micro-LEDs are arranged as follows: the ratio of the third number of the multiple second micro-LEDs arranged in the first direction of the first side surface to the fourth number of the multiple second micro-LEDs arranged in the second direction of the third side surface is 1:

9.

11. The display device according to claim 1, wherein: The second printed circuit board is parallel to the first printed circuit board, and The first edges of the plurality of first display modules are adjacent to the second edges of the plurality of second display modules in the width direction of the display device.

12. The display device according to claim 11, wherein: The plurality of first display modules and the plurality of second display modules are disposed opposite to each other.

13. The display device according to claim 12, wherein: A display module among the plurality of first display modules is arranged opposite to a corresponding display module among the plurality of second display modules.

14. The display device according to claim 13, wherein: A display module of the plurality of first display modules is disposed in contact with a corresponding display module of the plurality of second display modules.

15. The display device according to claim 1, further comprising: an arrangement plate configured to support the plurality of first display modules and the plurality of second display modules; as well as The housing is configured to fix the plurality of first display modules, the plurality of second display modules and the arrangement plate together.

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