Display apparatus

Abstract

A display device is disclosed. The display device comprises a printed circuit board and a plurality of display modules arranged continuously along the longitudinal direction of the printed circuit board, and each of the plurality of display modules comprises a thin-film transistor substrate, a plurality of micro LEDs arranged on one surface of the thin-film transistor substrate, and a flexible circuit board (FPCB) that connects the printed circuit board and the thin-film transistor substrate and has a driving driver arranged on one surface for controlling the plurality of micro LEDs.

Description

Technology Field

[0001] The present disclosure relates to a display device in which the manufacturing process is simplified and signal efficiency is improved. Background Technology

[0002] Micro LEDs are ultra-small inorganic light-emitting materials that emit light on their own without color filters or backlights. Specifically, micro LEDs can refer to ultra-small LEDs that are about one-tenth the length and one-hundredth the area of ​​a standard light-emitting diode (LED) chip, with dimensions of 10 to 100 micrometers (μm) in width, length, and height.

[0003] Micro LEDs are placed on a thin film transistor substrate, and their operation is controlled by a plurality of thin film transistors.

[0004] Such thin-film transistor substrates are utilized as substrates for driving displays of various sizes, ranging from flexible devices and small wearable devices (e.g., Wearable Watches) to large TVs measuring tens of inches. To drive a thin-film transistor substrate, it is connected to an external circuit (External IC) or a driving circuit (Driver IC) capable of applying current to the thin-film transistor substrate.

[0005] These external circuits (External ICs) or driver circuits (Driver ICs) were placed on the back of multiple thin-film transistor substrates to reduce the seam between the arranged multiple thin-film transistor substrates.

[0006] However, in order to electrically connect the micro LEDs on a plurality of thin-film transistor substrates and the external circuits (External IC) or driver circuits (Driver IC) on the back of the plurality of thin-film transistor substrates, vias were formed on the thin-film transistor substrates to make the connection, but this manufacturing process was complex and had the problem of low manufacturing reliability.

[0007] The present disclosure for achieving the above objective is to provide a display device in which the manufacturing process is simplified and signal efficiency is improved.

[0008] The present disclosure for achieving the above objective provides a display device comprising a printed circuit board and a plurality of display modules arranged continuously along the longitudinal direction of the printed circuit board, wherein each of the plurality of display modules comprises a thin-film transistor substrate, a plurality of micro LEDs arranged on one surface of the thin-film transistor substrate, and a flexible circuit board (FPCB) that connects the printed circuit board and the thin-film transistor substrate and has a driving driver disposed on one surface for controlling the plurality of micro LEDs.

[0009] The thin film transistor substrate is a rectangle having first to fourth sides, the first side is positioned adjacent to the flexible circuit board, and the third and fourth sides may be longer than the first side.

[0010] The third side of each of the plurality of display modules can be arranged to be parallel to each other.

[0011] Among a plurality of display modules, a third side of one display module can come into contact with a fourth side of another display module adjacent to the one display module.

[0012] It may further include a timing controller that provides a video signal to each of the driving drivers of the plurality of display modules.

[0013] The timing controller can be positioned behind the plurality of display modules.

[0014] The timing controller can be positioned at the center of the plurality of display modules.

[0015] The timing controller can be positioned so that the sum of the distances between the timing controller and the driving driver of each of the plurality of display modules is minimized.

[0016] The above timing controller may be arranged such that the driving drivers of each of the plurality of display modules are symmetrically positioned around the timing controller.

[0017] The ratio of the number arranged along the length direction of the first side to the number arranged along the length direction of the third side may be 1:9.

[0018] It may further include an additional printed circuit board spaced apart from and arranged parallel to the above printed circuit board, and a plurality of additional display modules arranged continuously along the length direction of the additional printed circuit board.

[0019] The plurality of display modules and the plurality of additional display modules can be arranged to face each other.

[0020] Each of the above plurality of display modules and each of the above plurality of additional display modules can be arranged to face each other.

[0021] Each of the above plurality of display modules and each of the above plurality of additional display modules can be arranged to be in contact with each other.

[0022] Each of the above plurality of display modules and each of the above plurality of additional display modules can be arranged in a line.

[0023] The above plurality of display modules may be arranged so that the ratio of the horizontal length of the plurality of display modules and the vertical length of the plurality of display modules and the plurality of additional display modules is at least one of 1:1, 16:9, and 21:9.

[0024] The plurality of micro LEDs above include a first micro LED that emits red light, a second micro LED that emits green light, and a third micro LED that emits blue light, and the first to third micro LEDs can form a single pixel.

[0025] It may further include an array plate that supports the plurality of display modules and the plurality of additional display modules so that they are arranged parallel to each other on the same plane, and a housing that fixes the plurality of display modules, the plurality of additional display modules, and the array plate. Brief explanation of the drawing

[0026] FIG. 1 is an exploded perspective view showing a display device according to one embodiment of the present disclosure. FIG. 2 is a front view showing a display panel portion according to one embodiment of the present disclosure. FIG. 3 is an enlarged view showing a display module according to one embodiment of the present disclosure. Figure 4 is a cross-sectional view along the CC line of Figure 3. FIG. 5 is a block diagram showing a micro LED, a driving driver, a timing controller, and a processor according to one embodiment of the present disclosure. Figure 6a is a cross-sectional view along line AA of Figure 2. Figure 6b is a cross-sectional view along the BB line of Figure 2. FIGS. 7A and FIGS. 7B are enlarged views showing some display modules showing the operation of multiple display modules. FIG. 8 is a front view showing the connection of a plurality of display modules and a timing controller. Fig. 9 is a front view showing various display areas of Fig. 2. FIG. 10 is a front view showing a display panel portion according to another embodiment of the present disclosure. Specific details for implementing the invention

[0027] To fully understand the structure and effects of the present disclosure, preferred embodiments of the present disclosure are described with reference to the accompanying drawings. However, the present disclosure is not limited to the embodiments disclosed below, but can be implemented in various forms and various modifications can be made. The description of the embodiments is provided merely to ensure that the present disclosure is complete and to fully inform those skilled in the art of the scope of the invention. In the accompanying drawings, the components are depicted enlarged from their actual size for convenience of explanation, and the proportions of each component may be exaggerated or reduced.

[0028] When a component is described as being "on" or "in contact" with another component, it should be understood that while it may be directly touching or connected to the other component, there may also be another component in between. On the other hand, when a component is described as being "immediately on" or "in contact" with another component, it should be understood that there is no other component in between. Other expressions describing the relationship between components, such as "between" and "directly between," can be interpreted in the same way.

[0029] Terms such as "first," "second," etc., may be used to describe various components, but said components shall not be limited by said terms. Such terms may be used solely for the purpose of distinguishing one component from another. For example, without departing from the scope of the present disclosure, the first component may be named the second component, and similarly, the second component may be named the first component.

[0030] A singular expression includes a plural expression unless the context clearly indicates otherwise. Terms such as "comprising" or "having" are intended to indicate the existence of the features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, and may be interpreted as implying that one or more other features, numbers, steps, actions, components, parts, or combinations thereof may be added.

[0031] Unless otherwise defined, the terms used in the embodiments of the present disclosure may be interpreted in the sense commonly known to those skilled in the art.

[0032] Hereinafter, with reference to FIG. 1, the structure of a display device (1) according to one embodiment of the present disclosure will be described.

[0033] FIG. 1 is an exploded perspective view showing a display device (1) according to one embodiment of the present disclosure.

[0034] The display device (1) described below is a device capable of processing video signals received from the outside and visually displaying the processed video, and can be implemented in various forms such as a television, monitor, portable multimedia device, portable communication device, etc., and the form is not limited as long as it is a device that visually displays video.

[0035] As illustrated in FIG. 1, the display device (1) may include a protective plate (10), a display panel part (100), an array plate (30), and a housing (40).

[0036] The protective plate (10) is positioned on the front (Y-axis direction) of the display device (1) and can protect the display panel portion (100) positioned behind the protective plate (10) from the outside.

[0037] The protective plate (10) can be made of a glass material formed with a thin thickness and can be made of various materials as needed.

[0038] The display panel section (100) can irradiate light to display an image forward (Y-axis direction) according to an image signal input from the outside.

[0039] The display panel section (100) can implement display screens of various sizes and shapes depending on the number of arrangements of a plurality of display modules (110) and a plurality of additional display modules (120) and the size of each display module (110, 120).

[0040] The specific structure of the display panel part (100) will be described later with reference to FIG. 2.

[0041] The array plate (30) is a plate on which the display panel section (100) can be placed, and is placed on the rear side of the display panel section (100). The array plate (30) can be formed as a flat plate and can be formed in various shapes and sizes to match the shape and size of the display panel section (100).

[0042] Accordingly, the array plate (30) can support the display panel section (100) so that the display panel section (100) is arranged parallel to the same plane.

[0043] Specifically, the arrangement plate (30) can support a plurality of display modules (110) and a plurality of additional display modules (120) constituting the display panel section (100) so that they are arranged parallel to each other on the same plane.

[0044] Accordingly, the same height between the plurality of display modules (110) and the plurality of additional display modules (120) can be achieved to achieve uniform brightness of the display screen.

[0045] The housing (40) forms the exterior of the display device (1) and is positioned behind the array plate (30), and can stably fix a plurality of display modules (110), a plurality of additional display modules (120) and the array plate (30).

[0046] Accordingly, the housing (40) prevents various components included in the display device (1) from being exposed to the outside and can protect the various components included in the display device (1) from external impact.

[0047] Hereinafter, the specific structure of the display panel part (100) will be described with reference to FIGS. 2 to 5.

[0048] FIG. 2 is a front view showing a display panel section (100) according to one embodiment of the present disclosure, FIG. 3 is an enlarged view showing one display module (110) according to one embodiment of the present disclosure, FIG. 4 is a cross-sectional view along the CC line of FIG. 3, and FIG. 5 is a block diagram showing a micro LED (130), a driving driver (50), a timing controller (20), and a processor (80) according to one embodiment of the present disclosure.

[0049] Referring to FIG. 2, the display panel section (100) may include a printed circuit board (61), a plurality of display modules (110) arranged continuously along the longitudinal direction of the printed circuit board (61), an additional printed circuit board (62) arranged parallel to and spaced apart from the printed circuit board (61), and a plurality of additional display modules (120) arranged continuously along the longitudinal direction of the additional printed circuit board (62).

[0050] Here, the length direction of the printed circuit board (61) and the additional printed circuit board (62) may mean the direction (x-axis direction) where the length of the printed circuit board (61) and the additional printed circuit board (62) is longer.

[0051] Along the length direction of the printed circuit board (61), the first to nth display modules having the same structure can be arranged continuously. Here, n means a natural number.

[0052] Accordingly, depending on the number of display modules and the shape of each display module, the display screen implemented in the display panel section (100) can be implemented in various ways.

[0053] In other words, by arranging multiple display modules having the same structure, display screens of various sizes can be realized through a simple manufacturing process.

[0054] A printed circuit board (PCB, 61) has an electrical circuit patterned on a substrate that is an insulator, and can be electrically and physically connected to a plurality of display modules (110) through a flexible circuit board (FPCB, 71).

[0055] Accordingly, the printed circuit board (61) can be electrically connected to a plurality of display modules (110), a timing controller (20) and a processor (80) described later.

[0056] In addition, the printed circuit board (61) can transmit a signal received from the timing controller (20) or processor (80) to a plurality of display modules (110), or transmit a signal received from the plurality of display modules (110) to the timing controller (20) or processor (80).

[0057] Additionally, the printed circuit board (61) may have a rectangular shape with one side formed long. For example, the length of one side 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) along the length direction of the printed circuit board (61).

[0058] In addition, since the plurality of display modules (110) are arranged continuously along the length direction of the printed circuit board (61), the printed circuit board (61) can serve as a reference for the arrangement of the plurality of display modules (110).

[0059] Referring to FIG. 3, the display module (110) may include a thin film transistor substrate (111), a plurality of micro LEDs (130) arranged on one side of the thin film transistor substrate (111), and a flexible circuit board (FPCB, 70) that connects the thin film transistor substrate (111) and a thin film transistor substrate (111) and has a driving driver (50) disposed on one side to control the plurality of micro LEDs (130).

[0060] The thin-film transistor substrate (111) can stably fix a plurality of micro LEDs (130) arranged on a flat surface. Here, the thin-film transistor substrate (111) may be composed of any one of a glass substrate, a flexible substrate, and a plastic substrate.

[0061] Specifically, the thin-film transistor substrate (111) may have an electrode layer (or TFT layer) including a plurality of thin-film transistors (112) bonded to a glass substrate. Accordingly, a driving driver (50) for driving the thin-film transistor substrate (111) may be placed and operated on the thin-film transistor substrate (111) formed of the glass substrate and the electrode layer. That is, a chip-type driving driver (50) may be implemented in a GOG (Chip on class) form on the thin-film transistor substrate (111).

[0062] Additionally, the thin-film transistor substrate (111) may be composed of a circuit board having a circuit formed on a flexible board. Accordingly, a driving driver (50) for driving the thin-film transistor substrate (111) may be placed on the thin-film transistor substrate (111) composed of a circuit board and operated. That is, a chip-type driving driver (50) may be implemented in a COB (Chip on Board) form on the thin-film transistor substrate (111).

[0063] In addition, although only the driving driver (50) is disposed on the thin-film transistor substrate (111), not only the driving driver (50) but also various chip-shaped components can be disposed on the thin-film transistor substrate (111).

[0064] In addition, as shown in FIG. 4, 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) arranged on one side.

[0065] A thin film transistor (112) is formed inside a thin film transistor substrate (111) and can be electrically connected to a micro LED (130) placed on the upper surface of the thin film transistor substrate (111).

[0066] Accordingly, the thin-film transistor (112) can control the current flowing through the micro LED (130) to selectively drive the micro LED (130). That is, the thin-film transistor (112) can act as a switch that controls the pixel, which is the basic unit of the display.

[0067] In addition, the thin-film transistor substrate (111) may have a first side (111a) positioned adjacent to the flexible circuit board (71), a second side (111b) positioned facing the first side (111a), and third and fourth sides (111c, 111d) formed longer than the first side (111a) by connecting the first side (111a) and the second side (111b).

[0068] That is, the thin film transistor substrate (111) may have a rectangular shape having first to fourth sides (111a, 111b, 111c, 111d).

[0069] For example, the first side (111a) and the second side (111b) may each refer to the top and bottom of the thin-film transistor substrate (111). Additionally, the third side (111c) and the fourth side (111d) may refer to the side ends of the thin-film transistor substrate (111) formed parallel to each other.

[0070] Here, the first side (111a) refers to a side in which a printed circuit board (61) is placed adjacently, and the second side (111b) may refer to a side in which a printed circuit board (61) is not placed.

[0071] Micro LED (130) is made of an inorganic light-emitting material with a width, length, and height of 100 μm or less and is placed on a thin-film transistor substrate (111) to emit light on its own.

[0072] A micro LED (130) may be composed of a single pixel (130, pixel), and within the single pixel, 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 may be arranged as sub-pixels.

[0073] The subpixels (131, 132, 133) may be arranged in a matrix form or sequentially within a single pixel (130). However, the arrangement of these subpixels (131, 132, 133) is merely an example, and the subpixels (131, 132, 133) may be arranged in various forms within each single pixel (130).

[0074] Micro LEDs (130) are gaining attention as light-emitting devices for next-generation displays because they have a fast response speed, low power consumption, and high brightness. Specifically, micro LEDs (130) have a higher efficiency in converting electricity into photons compared to conventional LCDs or OLEDs.

[0075] In other words, the “brightness per watt” is higher than that of conventional LCD or OLED displays. This allows the micro LED (130) to produce the same brightness with about half the energy compared to conventional LED or OLED.

[0076] In addition, the micro LED (130) can achieve high resolution, excellent color, contrast, and brightness, so it can accurately display a wide range of colors and produce a clear screen even in bright sunlight outdoors. Furthermore, the micro LED (130) is resistant to burn-in and generates little heat, ensuring a long lifespan without deformation.

[0077] In addition, a plurality of micro LEDs (130) disposed on one side of the thin-film transistor substrate (111) can be arranged with a first pitch (P1) between them. That is, since the plurality of micro LEDs (130) can be arranged with the same first pitch (P1), uniform brightness can be achieved across the entire display screen.

[0078] The driving driver (50) is placed on a flexible circuit board (70) and can control a plurality of micro LEDs (130) placed on a single thin-film transistor substrate (111) line by line.

[0079] The driving driver (50) may be composed of multiple units, and each driving driver (50) may be placed on a single flexible circuit board (71).

[0080] Accordingly, the number of driving drivers (50) may be equal to the number of thin-film transistor substrates (111). That is, one driving driver (50) may be placed on one thin-film transistor substrate (111).

[0081] Additionally, referring to FIG. 5, the driving driver (50) may include a data driving driver (51) and a gate driving driver (50).

[0082] The data driving driver (51) can generate 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 video frame, and transmit the generated control signal to a micro LED (130) connected to each corresponding line.

[0083] The gate driving driver (52) can generate 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 transmit the generated control signal to each connected micro LED (130) connected to the corresponding line.

[0084] Accordingly, a plurality of micro LEDs (130) can be controlled using a data driving driver (51) and a gate driving driver (52).

[0085] The timing controller (20) can provide a video signal to each of the driving drivers (50) of the plurality of display modules (110). That is, the timing controller (20) can control the plurality of display modules (110) by controlling the plurality of driving drivers (50).

[0086] Specifically, the timing controller (20) receives input signals (IS), horizontal synchronization signals (Hsync), vertical synchronization signals (Vsync), and main clock signals (MCLK), etc. from the processor (80), and generates image data signals, scan control signals, data control signals, light emission control signals, etc. of the first to third micro LEDs (131, 132, 133) and provides them to the driving driver (50).

[0087] And, the timing controller (20) may use at least one of pulse width modulation (PWM) in which the duty ratio of the driving current (Id) is varied and amplitude modulation (PAM) in which the amplitude of the driving current (Id) is varied to control the brightness of each of the first to third micro LEDs (131, 132, 133).

[0088] For example, in the case of a pulse width modulation signal (PWM), the longer the duty ratio (or driving time) of the driving current, the more the micro LED (130) can emit light with high brightness, and the duty ratio (%) can be determined according to the dimming value input from the processor (80).

[0089] Meanwhile, in the case of an amplitude modulation signal (PAM), the larger the amplitude of the driving current, the more the micro LED (130) can emit light with high brightness. Through this, various colors and gradations of the image can be expressed.

[0090] A processor (80) is positioned on one side of a display device (1) and can transmit command signals for driving and controlling a plurality of micro LEDs (130) to a timing controller (20).

[0091] Here, the processor (80) may include one or more of a central processing unit (CPU), a controller, an application processor (AP), a communication processor (CP), and an ARM processor.

[0092] Again, referring to FIG. 4, the flexible printed circuit board (71) is formed by forming a conductor circuit with good electrical conductivity on an insulator of a flexible material, and the printed circuit board (61) and the thin-film transistor board (111) are connected, and a driving driver (50) can be placed on one side.

[0093] Specifically, the flexible circuit board (71) is placed on the first side (111a) of the thin-film transistor substrate (111), so that the flexible circuit board (71) can electrically and physically connect the thin-film transistor substrate (111) and the printed circuit board (61).

[0094] Accordingly, a driving driver (50) for driving a plurality of micro LEDs (130) is positioned on the first side (111a) of the thin-film transistor substrate (111), thereby minimizing or eliminating the gap between a plurality of display modules (110), so that a seamless and bezel-less display screen can be realized.

[0095] In addition, since the driving driver (50) does not need to be placed on the back of the thin-film transistor substrate (111) to achieve seamlessness of the display screen, a simple structure can be implemented and manufacturing costs can be reduced.

[0096] That is, through a structure in which a driving driver (50) for driving a plurality of micro LEDs (130) is placed on the first side (111a) of a thin-film transistor substrate (111), a plurality of display modules (110) can be arranged sequentially along the length direction of a printed circuit board (61) to implement a display screen.

[0097] In addition, the flexible circuit board (71) may be composed of multiple boards, and each flexible circuit board (71) may be placed on the first side (111a) of a thin film transistor substrate (111).

[0098] Accordingly, the number of flexible circuit boards (71) can be equal to the number of thin-film transistor boards (111).

[0099] That is, a single display module (110) may be configured as a single unit comprising a thin-film transistor substrate (111) on which a plurality of micro LEDs (130) are arranged, a flexible circuit board (71) arranged on a first side (111a) of the thin-film transistor substrate (111), and a driving driver (50) arranged on one side of the flexible circuit board (71).

[0100] Hereinafter, with reference to FIGS. 2, FIGS. 6a, and FIGS. 6b, a specific arrangement structure of the display panel part (100) will be described.

[0101] FIG. 6a is a cross-sectional view along line AA of FIG. 2, and FIG. 6b is a cross-sectional view along line BB of FIG. 2.

[0102] Referring to FIG. 2, a plurality of display modules (110) may be arranged sequentially along the length direction of a printed circuit board (61). Here, the plurality of display modules (110) may all have the same structure.

[0103] Specifically, a plurality of display modules (110) can be arranged such that n identical display modules (110) are arranged continuously based on one end of the printed circuit board (61).

[0104] For example, a second display module (110-2) having the same structure as the first display module (110-1) may be arranged on the side of the first display module (110-1). Likewise, a third display module (110-3) having the same structure as the second display module (110-2) may be arranged on the side of the second display module (110-2).

[0105] In this way, the nth display module (110-n) can be placed on the other end opposite to one end of the printed circuit board (61).

[0106] That is, the first to nth display modules can be sequentially arranged along the length direction of the printed circuit board (61). Accordingly, since a plurality of display modules (110) having the same structure are used to implement the display screen, the manufacturing cost of the display device (1) can be significantly reduced.

[0107] At this time, the third side (111c) of each of the plurality of display modules (110) may be arranged to be parallel to each other. Accordingly, the plurality of display modules (110) are aligned in parallel, and the horizontal and vertical spacing and arrangement between the plurality of micro LEDs (130) included in the plurality of display modules (110) are made uniform, thereby enabling uniform brightness of the display device (1).

[0108] Specifically, as shown in FIG. 6a, 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) can be arranged parallel to each other.

[0109] More specifically, the fourth side (111d-1) of the first thin-film transistor substrate (111-1) and the third side (111c-2) of the second thin-film transistor substrate (111-2) may be arranged parallel to each other with a spaced-apart space (S) having a third gap (D3).

[0110] Accordingly, the first outermost micro LED (130-1) disposed at the outermost edge of the first thin-film transistor substrate (111-1) can be disposed with the second outermost micro LED (130-2) disposed at the outermost edge of the second thin-film transistor substrate (111-2) at a second pitch (P2).

[0111] Here, the second pitch (P2) is equal to the sum of the first gap (D1), which is the gap between the fourth side (111d-1) of the first thin-film transistor substrate (111-1) and the first outermost micro LED (130-1); the second gap (D2), which is the gap between the third side (111c-2) of the second thin-film transistor substrate (111-2) and the second outermost micro LED (130-2); and the third gap (D3) of the spacing space (S).

[0112] In addition, the second pitch (P2) may be the same as the first pitch (P1), which is the spacing between a plurality of micro LEDs (130) arranged on a single thin-film transistor substrate (111).

[0113] Accordingly, even if multiple display modules (110-1, 110-2) are arranged, the spacing between multiple micro LEDs (130) is all the same, so uniform brightness of the display screen can be achieved, and at the same time, seamlessness can also be achieved.

[0114] Meanwhile, a non-conductive resin composition (F) containing a shielding black pigment can be filled between the gaps (S). Accordingly, even if gaps (S) are formed between a plurality of display modules (110), the seams cannot be perceived from the outside.

[0115] Additionally, among the multiple display modules, the third side (111c) of one display module can come into contact with the fourth side (111d) of another display module adjacent to one display module.

[0116] For example, the third side (111c-2) of the second display module (110-2) may come into contact with the fourth side (111d-1) of the first display module (110-1) adjacent to the second display module (110-2).

[0117] Accordingly, the gap (S) between the first display module (110-1) and the second display module (110-2) can be eliminated, and seamlessness between the multiple display modules (110) can be achieved.

[0118] Meanwhile, referring again to FIG. 2, the additional printed circuit board (62) is spaced apart from and arranged parallel to the printed circuit board (61). Since the additional printed circuit board (62) has the same configuration as the aforementioned printed circuit board (61), a redundant description is omitted.

[0119] Additional display modules (120) may have the same configuration and be arranged sequentially along the length direction of the additional printed circuit board (62). Here, since the additional display modules (120) have the same configuration as the aforementioned display modules (110), redundant descriptions are omitted.

[0120] Referring to FIG. 2, a plurality of additional display modules (120) may be arranged sequentially along the length direction of an additional printed circuit board (61). Here, the plurality of additional display modules (120) may all have the same structure.

[0121] Specifically, a plurality of additional display modules (120) may be arranged such that n identical additional display modules (120) are arranged continuously based on one end of the additional printed circuit board (62).

[0122] For example, a second additional display module (120-2) having the same structure as the first additional display module (120-10) may be listed on the side of the first additional display module (120-1). Likewise, a third additional display module (120-3) having the same structure as the second additional display module (120-2) may be listed on the side of the second additional display module (120-2).

[0123] In this way, the nth additional display module (120-n) can be placed on the other end opposite to one end of the additional printed circuit board (62). Here, n is a natural number.

[0124] A plurality of additional display modules (120) can be arranged to face each other with a plurality of display modules (110). That is, as shown in FIG. 2, a plurality of display modules (110) and a plurality of additional display modules (120) can be arranged between a printed circuit board (61) and an additional printed circuit board (62) to create a single display screen.

[0125] Accordingly, by arranging a plurality of identically manufactured display modules (110) and a plurality of additional display modules (120), a single display screen can be realized.

[0126] In addition, since a display screen can be implemented by simply changing the arrangement direction and arrangement column of a plurality of identically manufactured display modules (110) and a plurality of additional display modules (120), the manufacturing process of the display panel part (100) can be simplified.

[0127] In addition, each of the plurality of display modules (110) and each of the plurality of additional display modules (120) can be arranged to face each other.

[0128] For example, as shown in FIG. 6b, 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) can be arranged to face each other.

[0129] More specifically, the second side (111b-1) of the first thin-film transistor substrate (111-1) and the second side (121b-1) of the first additional thin-film transistor substrate (121-1) can be arranged in a line facing each other.

[0130] Here, the first side (111a-1, 121a-1) refers to a side in which a printed circuit board (61) and an additional printed circuit board (62) are arranged adjacently, and the second side (111b-1, 121b-1) refers to a side in which a printed circuit board (61) and an additional printed circuit board (62) are not arranged.

[0131] That is, the second side (111b) of the plurality of display modules (110) can be arranged to correspond to the second side (121b) of the plurality of additional display modules (120).

[0132] Accordingly, a plurality of display modules (110) and a plurality of additional display modules (120) can implement a single display screen.

[0133] Additionally, the second side (111b-1) of the first thin-film transistor substrate (111-1) and the second side (121b-1) of the first additional thin-film transistor substrate (121-1) can be arranged parallel to each other with a spaced-apart space (S').

[0134] Accordingly, the third outermost micro LED (130-3) placed at the outermost edge of the first thin-film transistor substrate (111-1) can be placed at a third pitch (P3) with the fourth outermost micro LED (130-4) placed at the outermost edge of the first additional thin-film transistor substrate (121-1).

[0135] Here, the third pitch (P3) is equal to the sum of the fourth gap (D4), which is the gap between the second side (111b-1) of the first thin-film transistor substrate (111-1) and the third outermost micro LED (130-3); the fifth gap (D5), which is the gap between the second side (121b-1) of the first additional thin-film transistor substrate (121-1) and the fourth outermost micro LED (130-4); and the sixth gap (D6) of the spacing space (S').

[0136] In addition, the third pitch (P3) may be the same as the first pitch (P1), which is the spacing between a plurality of micro LEDs (130) arranged on a single thin-film transistor substrate (111).

[0137] Accordingly, even if multiple display modules (110) and multiple additional display modules (120) are arranged together, the spacing between multiple micro LEDs (130) is the same, so uniform brightness of the display screen can be achieved, and at the same time, seamlessness can also be achieved.

[0138] Meanwhile, a non-conductive resin modifier (F) containing a shielding black pigment may be filled between the gaps (S'). Accordingly, even if gaps (S') are formed between the plurality of display modules (110) and the plurality of additional display modules (120), the seams may not be visible from the outside.

[0139] Additionally, each of the plurality of display modules (110) and each of the plurality of additional display modules (120) can be arranged to be in contact with each other. That is, each of the plurality of display modules (110) and each of the plurality of additional display modules (120) can be arranged so as not to form a gap (S').

[0140] Accordingly, the plurality of display modules (110) and the plurality of additional display modules (120) can implement a single display screen and simultaneously achieve seamlessness.

[0141] In addition, each of the plurality of display modules (110) and each of the plurality of additional display modules (120) can be arranged in a row.

[0142] For example, as shown in FIG. 2, the first display module (110-1) can be arranged in line with the first additional display module (120-1), and the second display module (110-2) can be arranged in line with the second additional display module (120-2).

[0143] Likewise, the nth display module (110-n) can be arranged in a line with the nth additional display module (120-n). Here, n is a natural number, and accordingly, the number of multiple display modules (110) and multiple additional display modules (120) can be the same.

[0144] As each of the plurality of display modules (110) and each of the plurality of additional display modules (120) are arranged in a row, the display device (1) can implement a rectangular display screen.

[0145] In addition, by minimizing physical and signal differences between adjacent display modules, line mura between display modules can be minimized.

[0146] Hereinafter, with reference to FIG. 7a and FIG. 7b, the operation of a display panel part (100) according to one embodiment of the present disclosure will be described.

[0147] FIGS. 7A and 7B are enlarged views showing some display modules (110-1, 110-2, 120-1, 120-2) showing the operation of a plurality of display modules (110).

[0148] As illustrated in FIG. 7a, a plurality of display modules (110) and a plurality of additional display modules (120) are arranged facing each other and adjacently, and a printed circuit board (61) and an additional printed circuit board (62) may be arranged on the top and bottom (i.e., first sides) of the plurality of display modules (110) and the plurality of additional display modules (120), respectively.

[0149] Subsequently, the processor (80) can simultaneously transmit a single display screen signal to a printed circuit board (61) and an additional printed circuit board (62), the printed circuit board (61) can transmit the signal to a plurality of display modules (110), and the additional printed circuit board (62) can transmit the signal to a plurality of additional display modules (120).

[0150] That is, one processor (80) transmits a signal to one timing controller (20), and the timing controller (20) transmits the signal evenly to the printed circuit board (61) and additional printed circuit board (62) to implement a single display screen.

[0151] For example, a signal transmitted to a printed circuit board (61) can simultaneously transmit a signal to a first drive driver (50-1) and a second drive driver (50-2) on a flexible circuit board (71), and a signal transmitted to an additional printed circuit board (62) can simultaneously transmit a signal to a first additional drive driver (51-1) and a second additional drive driver (51-2) on an additional flexible circuit board (72).

[0152] Here, since the additional drive driver (51-1, 51-2) has the same configuration as the aforementioned drive driver (50, 50-1, 50-2), a redundant description is omitted.

[0153] Subsequently, the first driving driver (50-1) operates the first display module (110-1), the second driving driver (50-2) operates the second display module (110-2), the first additional driving driver (51-1) operates the first additional display module (120-1), and the second additional driving driver (51-2) operates the second additional display module (120-2).

[0154] At this time, since the signal transmission may be faster the closer it is to each driving driver, the signal transmission may be slightly slower on the adjacent surface (i.e., the second side) of the plurality of display modules (110) and the plurality of additional display modules (120).

[0155] However, even in this case, since the plurality of display modules (110) and the plurality of additional display modules (120) are arranged symmetrically with respect to each other, the transmission of signals can also be transmitted symmetrically.

[0156] Accordingly, due to symmetrical signal transmission, there may be no difference in signal transmission near the adjacent surface (i.e., second side) of the plurality of display modules (110) and the plurality of additional display modules (120).

[0157] That is, the efficiency of signal transmission can be improved through the arrangement structure of multiple display modules (110) and multiple additional display modules (120).

[0158] For example, as illustrated in FIG. 7b, when the display screen transmission signal is a signal representing brightness, a plurality of display modules (110) and a plurality of additional display modules (120) arranged adjacent to the printed circuit board (61) and the additional printed circuit board (62) may appear white.

[0159] In addition, since the signal transmission is slower the further away from the printed circuit board (61) and the additional printed circuit board (62), the plurality of display modules (110) and the plurality of additional display modules (120) may appear black.

[0160] However, even in this case, the plurality of display modules (110) and the plurality of additional display modules (120) are arranged symmetrically so that the user cannot perceive the difference in brightness between the plurality of display modules (110) and the plurality of additional display modules (120).

[0161] In addition, since the plurality of display modules (110) and the plurality of additional display modules (120) achieve the same level of brightness, the user cannot see the seam between the plurality of display modules (110) and the plurality of additional display modules (120), so seamlessness can be achieved through signal control.

[0162] That is, when a single display screen is implemented through an arrangement structure of multiple display modules (110) and multiple additional display modules (120), the manufacturing process is simplified, a seamless design is achieved, and the efficiency of signal transmission can be increased.

[0163] Below, the specific structure of the timing controller (20) will be described with reference to FIG. 8.

[0164] FIG. 8 is a front view showing the connection between the display module (110, 120) and the timing controller (20).

[0165] The timing controller (20) can be connected to the drive driver (50) and additional drive driver (51) via electrical paths (90, 91).

[0166] Here, the electrical path (90, 91) may mean the shortest path between the timing controller (20), the drive driver (50), and the additional drive driver (51). Additionally, the timing controller (20) is not limited to being directly connected to the drive driver (50) and the additional drive driver (51), but may be connected via a printed circuit board (60) and an additional printed circuit board (61).

[0167] Accordingly, a signal transmitted from one timing controller (20) is transmitted to a driving driver (50) and an additional driving driver (51) through a plurality of electrical paths (90, 91), and can control and operate a plurality of display modules (110) and a plurality of additional display modules (120).

[0168] The number of electrical paths (90, 91) is equal to the number of drive drivers (50) and additional drive drivers (51).

[0169] The timing controller (20) can be positioned at the center of the rear of the plurality of display modules (110) and the plurality of additional display modules (120).

[0170] In addition, the timing controller (20) can be positioned so that the sum of the distances between the timing controller (20) and the driving drivers (50) of each of the plurality of display modules (110) is minimized. Furthermore, the timing controller (20) can be positioned so that the sum of the distances between the timing controller (20) and the additional driving drivers (51) of each of the plurality of additional display modules (120) is minimized.

[0171] In addition, the timing controller (20) can be arranged such that the driving drivers (50) of each of the plurality of display modules (110) are symmetrically positioned around the timing controller (20).

[0172] Likewise, the timing controller (20) may be arranged such that the driving driver (50) of each of the plurality of display modules (110) and the additional driving driver (51) of each of the plurality of additional display modules (120) are symmetrically positioned around the timing controller (20).

[0173] Accordingly, considering that the length of the electrical path (90, 91) is proportional to the resistance of the signal, the timing controller (20) can transmit the same signal without signal loss to all driving drivers (50) and all additional driving drivers (51) through electrical paths (90, 91) of the same length.

[0174] Therefore, without the need to provide multiple timing controllers, one display screen can be controlled by placing one timing controller (20).

[0175] That is, since the driving driver (50) controlling the plurality of display modules (110) and the additional driving driver (51) controlling the plurality of additional display modules (120) are symmetrically arranged, all of the driving driver (50) and the additional driving driver (51) placed in the display device (1) can be controlled by placing only one timing controller (20).

[0176] Therefore, the utilization rate of the timing controller (20) can be maximized, and since only one timing controller (20) is used, the manufacturing cost and manufacturing process can be simplified.

[0177] Hereinafter, display panel sections (100) of various sizes will be described with reference to FIGS. 3 and FIGS. 9.

[0178] Fig. 9 is a front view showing various display areas of Fig. 2.

[0179] The ratio of the number of multiple micro LEDs (130) arranged along the length direction of the first side (111a) to the number arranged along the length direction of the third side (111c) may be 1:9.

[0180] Accordingly, the horizontal lengths (W1, W2, W3) of the plurality of display modules (110) and the vertical lengths (H1) of the plurality of display modules (110) and the plurality of additional display modules (120) can be arranged such that the ratio is at least one of 1:1, 16:9, and 21:9.

[0181] For example, when the ratio of the number of multiple micro LEDs (130) arranged along the length direction of the first side (111a) to the number arranged along the length direction of the third side (111c) is 1:9, 18 columns of display modules (110) and additional display modules (120) are arranged along the length direction of the printed circuit board (61), a 1:1 forward display screen (A1) can be realized.

[0182] Likewise, when the ratio of the number of multiple micro LEDs (130) arranged along the length direction of the first side (111a) to the number arranged along the length direction of the third side (111c) is 1:9, 32 rows of display modules (110) and additional display modules (120) are arranged along the length direction of the printed circuit board (61), a 16:9 4k or 8k display screen (A2) can be realized.

[0183] Additionally, when the ratio of the number of multiple micro LEDs (130) arranged along the length direction of the first side (111a) to the number arranged along the length direction of the third side (111c) is 1:9, 42 columns of display modules (110) and additional display modules (120) are arranged along the length direction of the printed circuit board (61), a 21:9 cinema display screen (A3) can be realized.

[0184] That is, when a plurality of micro LEDs (130) are arranged such that the ratio of their width to height is 1:9, a display module (110) of the same structure is produced, and by changing only the number of arrangements, a display screen of various sizes can be realized.

[0185] Therefore, the manufacturing cost and manufacturing process of display panel parts (100) of various sizes can be significantly reduced.

[0186] Hereinafter, with reference to FIG. 10, the structure of a display panel part (100') according to another embodiment of the present disclosure will be described.

[0187] FIG. 10 is a front view showing a display panel part (100') according to another embodiment of the present disclosure.

[0188] Here, the same reference numbers are used for identical configurations, and since the timing controller (20), printed circuit board (61), flexible circuit board (70), and multiple display modules (110) are identical configurations, redundant descriptions are omitted.

[0189] Unlike the above, the display panel section (100') may be composed of a printed circuit board (61) and a plurality of display modules (110) arranged sequentially along the length direction of the printed circuit board (61) as a single unit.

[0190] That is, the display panel section (100') can be implemented without additional printed circuit boards (62) and multiple additional display modules (120) being placed.

[0191] Accordingly, a display panel part (100') having a second height (H2) can be implemented as a minimum unit display panel part (100'). Therefore, the structure according to the present disclosure can form display panel parts (100') of various sizes and shapes.

[0192] Although various embodiments of the present disclosure have been described individually above, each embodiment is not required to be implemented alone, and the configuration and operation of each embodiment may be implemented in combination with at least one other embodiment.

[0193] Furthermore, although preferred embodiments of the present disclosure have been illustrated and described above, the present disclosure is not limited to the specific embodiments described above. It is understood that various modifications can be made by those skilled in the art without departing from the essence of the present disclosure as claimed in the claims, and such modifications should not be understood individually from the technical spirit or perspective of the present disclosure. Explanation of the symbols

[0194] 1: Display device 10: Protective plate 20: Timing controller 30: Array plate 40: Housing 50: Driving driver 60: Printed circuit board 70: Flexible circuit board 80: Processor 90: Electrical path 100: Display panel section 110: Display module 111: Thin-film transistor substrate 120: Additional display module 121: Additional thin-film transistor substrate 130: Micro LED

Claims

Claim 1 A printed circuit board; a plurality of display modules arranged continuously along the longitudinal direction of the printed circuit board; an additional printed circuit board arranged parallel to and spaced apart from the printed circuit board; a plurality of additional display modules arranged continuously along the longitudinal direction of the additional printed circuit board; and a timing controller disposed behind the plurality of display modules and the plurality of additional display modules, and providing a video signal to a driving driver for each of the plurality of display modules and an additional driving driver for each of the plurality of additional display modules; wherein each of the plurality of display modules and the additional display modules comprises: a thin-film transistor substrate; a plurality of micro LEDs arranged on one surface of the thin-film transistor substrate; and one flexible circuit board (FPCB) is included, which connects the printed circuit board and the thin-film transistor substrate and has a driving driver disposed on one surface for controlling the plurality of micro LEDs; wherein the thin-film transistor substrate is a rectangle having a first side, a second side, a third side, and a fourth side, the first side is disposed adjacent to the flexible circuit board, the third side and the fourth side are longer than the first side, and the width of the flexible circuit board (FPCB) is smaller than the length of the first side, the ratio of the number of micro LEDs arranged along the length direction of the first side to the number arranged along the length direction of the third side is 1:9, the plurality of display modules and the plurality of additional display modules are disposed facing each other, and the timing controller is placed at the center of the entire area of ​​the plurality of display modules and the additional display modules such that the sum of the distances between the timing controller and the driving driver of each of the plurality of display modules is minimized and the sum of the distances between the timing controller and the driving driver of each of the plurality of additional display modules is minimized. A deployed display device. Claim 2 In claim 1, the display device wherein the third side of each of the plurality of display modules is arranged to be parallel to each other. Claim 3 In paragraph 2, a display device in which a third side of one of a plurality of display modules contacts a fourth side of another display module adjacent to said display module. Claim 4 delete Claim 5 delete Claim 6 delete Claim 7 delete Claim 8 In claim 1, the timing controller is a display device in which the driving drivers of each of the plurality of display modules are arranged symmetrically around the timing controller. Claim 9 In claim 1, a display device in which each of the plurality of display modules and each of the plurality of additional display modules are arranged to face each other. Claim 10 In claim 9, a display device in which each of the plurality of display modules and each of the plurality of additional display modules are arranged to be in contact with each other. Claim 11 In claim 9, each of the plurality of display modules and each of the plurality of additional display modules is a display device arranged in a row. Claim 12 A display device according to claim 1, arranged such that the ratio of the horizontal length of the plurality of display modules to the vertical length of the plurality of display modules and the plurality of additional display modules is at least one of 1:1, 16:9, and 21:

9. Claim 13 A display device according to claim 1, wherein the plurality of micro LEDs comprises a first micro LED emitting red light; a second micro LED emitting green light; and a third micro LED emitting blue light, wherein the first micro LED, the second micro LED, and the third micro LED constitute a single pixel. Claim 14 A display device according to claim 1, further comprising: an array plate that supports the plurality of display modules and the plurality of additional display modules so as to be arranged parallel to each other on the same plane; and a housing that fixes the plurality of display modules, the plurality of additional display modules, and the array plate.

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