DISPLAY UNIT

Abstract

The invention proposes a display unit comprising: a display panel; multiple light-emitting diodes supported by the display panel to produce light; and an electrode body electrically connecting the display panel to such light-emitting diodes, with a maximum wavelength difference of light emitted from the light-emitting diodes of 5 nm or less.

Description

display device

[0001] The present invention relates to a display device.

[0002] Light-emitting diodes (LEDs) are increasingly used in recent display devices. These diodes utilize the properties of compound semiconductors to convert electrical signals into light, such as infrared, visible light, and ultraviolet light.

[0003] As the luminous efficiency of light-emitting diodes increases, light-emitting elements are being applied to various fields, including display devices, lighting equipment, and vehicle lamps.

[0004] However, there is a problem in that if any one of the multiple light-emitting diodes included in a conventional light-emitting device fails to light up, all of the multiple light-emitting diodes must be replaced.

[0005] Embodiments of the present invention aim to provide a display device that does not require replacement of all of a plurality of light-emitting elements even if any one of the plurality of light-emitting elements is not lit.

[0006] In addition, embodiments of the present invention aim to provide a display device having improved brightness by controlling the refraction direction.

[0007] In addition, embodiments of the present invention seek to provide a display device in which luminance loss can be compensated even when an unlit light-emitting element occurs.

[0008] In addition, embodiments of the present invention aim to provide a display device capable of easily short-circuiting an unlit light-emitting element.

[0009] In addition, embodiments of the present invention seek to provide a display device in which a plurality of light-emitting elements can be viewed as a single light-emitting element when turned on.

[0010] In addition, embodiments of the present invention seek to provide a display device capable of preventing an unlit light-emitting element from being recognized from the outside.

[0011] According to one aspect of the present invention, a display device may be provided, comprising: a display substrate; a plurality of light-emitting elements supported on the display substrate and emitting light; and an electrode body electrically connecting the display substrate and the plurality of light-emitting elements, wherein a difference in peak wavelength of light of the plurality of light-emitting elements is 5 nm or less.

[0012] In addition, a display device may be provided in which each of the plurality of light-emitting elements includes: a first conductive semiconductor layer; an active layer laminated on the first conductive semiconductor layer; a second conductive semiconductor layer laminated on the active layer; and a light-transmitting layer laminated on the second conductive semiconductor layer.

[0013] In addition, a display device can be provided in which a plurality of light-emitting elements are arranged adjacent to each other, a ragged area is formed in the light-transmitting layer, and the ragged area is formed on a surface of the outer surface of the light-transmitting layer facing the plurality of light-emitting elements.

[0014] In addition, a display device can be provided in which the second conductive semiconductor layer of each of the plurality of light-emitting elements is connected to each other and formed as an integral body, and the light-transmitting layer of each of the plurality of light-emitting elements is connected to each other and formed as an integral body.

[0015] In addition, a display device may be provided, further comprising: a plurality of first electrodes electrically connected to the first conductive semiconductor layer of the plurality of light-emitting elements and the electrode body; and a plurality of second electrodes electrically connected to the second conductive semiconductor layer of the plurality of light-emitting elements and the electrode body.

[0016] In addition, a display device can be provided in which the plurality of second electrodes are connected to each other and formed as an integral body.

[0017] In addition, a display device can be provided in which the first conductive semiconductor layers of the plurality of light-emitting elements are arranged in a radial shape based on the center of the second conductive semiconductor layer formed integrally.

[0018] In addition, a display device may be provided, including a display substrate; a light-emitting device supported on the display substrate that generates light; an electrode body that electrically connects the display substrate and the light-emitting device; and a marker that is disposed on the display substrate and has an electrode hole for exposing at least a part of the electrode body to the outside and a light-emitting hole for exposing the light-emitting device to the outside, wherein the electrode hole and the light-emitting hole are formed to have different sizes.

[0019] Additionally, a display device may be provided in which the area of ​​the light-emitting hole is larger than the area of ​​the electrode hole.

[0020] In addition, a display device may be provided, including a display substrate; a light-emitting device supported on the display substrate and generating light; an electrode body electrically connecting the display substrate and the light-emitting device; and a marker disposed on the display substrate, the marker having an electrode hole for exposing at least a portion of the electrode body to the outside and a light-emitting hole for exposing the light-emitting device to the outside, wherein the electrode hole and the light-emitting hole are disposed to be spaced apart from each other.

[0021] In addition, a display device may be provided in which the distance between the electrode hole and the light-emitting hole is smaller than the diameter of the electrode hole.

[0022] In addition, a display device may be provided in which the light-emitting device includes a plurality of light-emitting elements that are connected to the electrode body and generate light, the electrode body includes a plurality of sub-electrodes that are connected to each of the light-emitting elements, and a common electrode that is connected to at least some of the plurality of sub-electrodes, and the electrode holes are formed in a plurality to expose at least some of the plurality of sub-electrodes to the outside.

[0023] In addition, a display device may be provided in which each of the plurality of light-emitting elements includes a first conductive semiconductor layer; an active layer laminated on the first conductive semiconductor layer; a second conductive semiconductor layer laminated on the active layer; and a light-transmitting layer laminated on the second conductive semiconductor layer, and the light-emitting device further includes a first electrode electrically connected to the first conductive semiconductor layer; and a second electrode electrically connected to the second conductive semiconductor layer, and the plurality of sub-electrodes include a plurality of first sub-electrodes connected to one of the first electrode and the second electrode; and a plurality of second sub-electrodes connected to the other of the first electrode and the second electrode, and the plurality of electrode holes include a plurality of first electrode holes for exposing the plurality of first sub-electrodes to the outside.

[0024] In addition, a display device may be provided in which a distance between the plurality of first electrode holes is smaller than or equal to a distance between the plurality of first electrode holes and the light-emitting hole.

[0025] In addition, a display device may be provided in which the light emitting device and the light emitting holes are formed in a plurality and are spaced apart from each other, and the distance between the plurality of light emitting holes is greater than the distance between the plurality of first electrode holes.

[0026] Additionally, a display device may be provided in which the distance between the plurality of light-emitting holes is longer than the diameter of the electrode holes.

[0027] In addition, a display device can be provided in which the direction in which the plurality of light-emitting holes are arranged and the direction in which the plurality of first electrode holes are arranged are the same.

[0028] In addition, a display device may be provided in which the plurality of electrode holes include a plurality of second electrode holes for exposing the plurality of second sub-electrodes to the outside.

[0029] In addition, a display device may be provided in which the light-emitting hole is positioned between the plurality of first electrode holes and the plurality of second electrode holes.

[0030] In addition, a display device may be provided in which the light emitting device and the light emitting hole are formed in multiple numbers and are spaced apart from each other, and the distance between the multiple light emitting holes is smaller than the distance between the first electrode hole and the second electrode hole.

[0031] Embodiments of the present invention do not require replacement of all of the plurality of light-emitting elements even if any one of the plurality of light-emitting elements is not lit.

[0032] Additionally, embodiments of the present invention can improve the brightness of a display device.

[0033] Additionally, embodiments of the present invention can compensate for loss of brightness even if an unlit light-emitting element occurs in a display device.

[0034] In addition, embodiments of the present invention can easily short-circuit an unlit light-emitting element of a display device.

[0035] Additionally, embodiments of the present invention may allow multiple light-emitting elements to appear as a single light-emitting element when lit.

[0036] Additionally, embodiments of the present invention can prevent unlit light-emitting elements from being recognized from the outside.

[0037] In addition, embodiments of the present invention can implement a high-quality display device having a distinct contrast ratio and high contrast by reducing optical interference between a plurality of light-emitting devices and minimizing interference between driving areas.

[0038] FIG. 1 is a drawing showing a display device according to a first embodiment of the present invention.

[0039] FIG. 2 is a drawing showing a plurality of light-emitting elements of a display device according to a first embodiment of the present invention.

[0040] FIG. 3 is a drawing showing that the first electrode of the light-emitting device of FIG. 2 is connected to the first conductive semiconductor layer and the first sub-electrode, and the second electrode is connected to the second conductive semiconductor layer and the second sub-electrode.

[0041] Figure 4 is a drawing showing a state in which the sub-electrode of Figure 3 is short-circuited.

[0042] Figure 5 is a drawing showing a molding laminated on the inclined surface of the sub-electrode of Figure 4 and the groove of the display substrate.

[0043] Fig. 6 is a drawing showing a short-circuited state of the unlit light-emitting element of Fig. 1.

[0044] Figure 7 is a drawing showing a display device according to a second embodiment of the present invention.

[0045] Figure 8 is a drawing showing the light-emitting hole and electrode hole of the marker of Figure 7.

[0046] Figure 9 is a drawing showing a display device according to a third embodiment of the present invention.

[0047] Fig. 10 is a drawing showing the light-emitting hole and electrode hole of the marker of Fig. 9.

[0048] FIG. 11 is a drawing showing a first example of a display device according to a fourth embodiment of the present invention in which a second conductive semiconductor layer is formed integrally.

[0049] FIG. 12 is a drawing showing a second example of a display device according to a fourth embodiment of the present invention in which a second conductive semiconductor layer is formed integrally.

[0050] FIG. 13 is a drawing showing a display device according to a fifth embodiment of the present invention in which a plurality of first conductive semiconductor layers are arranged radially with respect to the center of a second conductive semiconductor layer.

[0051] In the following description, for purposes of explanation, numerous specific details are set forth to provide a thorough understanding of various embodiments or implementations of the present disclosure. As used herein, the terms "embodiment" and "implementation" are interchangeable to refer to non-limiting examples of devices or methods that utilize one or more of the inventive concepts disclosed herein. However, it will be apparent that various embodiments may be practiced without utilizing these specific details or using one or more equivalent arrangements. In other instances, well-known structures and devices are shown in block diagram form to avoid unnecessarily obscuring the various embodiments. Furthermore, while the various embodiments may vary from one another, they are not necessarily exclusive. For example, specific features, configurations, and characteristics of an embodiment may be utilized or implemented in other embodiments without departing from the scope of the inventive concepts.

[0052] Unless otherwise specified, the illustrated embodiments should be understood to provide exemplary features of varying details of some ways in which the concepts of the present invention may be practically implemented. Therefore, unless otherwise specified, the features, components, modules, layers, membranes, panels, regions, and / or aspects (hereinafter, individually or collectively referred to as "elements") of the various embodiments may be differently combined, separated, interchanged, and / or rearranged without departing from the scope of the concepts of the present invention.

[0053] The use of cross-hatching and / or shading in the accompanying drawings is generally provided to clarify boundaries between adjacent elements. As such, the presence or absence of cross-hatching or shading, unless expressly stated, does not imply or indicate any preference or requirement for any particular material, material properties, dimensions, proportions, commonality between the illustrated elements, and / or any other features, properties, or characteristics of the elements. Furthermore, in the accompanying drawings, the dimensions and relative sizes of elements may be exaggerated for clarity and / or illustrative purposes. When embodiments are implemented differently, certain process sequences may be performed differently from the described sequence. For example, two consecutively described processes may be performed substantially simultaneously or in a reverse order from the described sequence. Furthermore, like reference numerals designate like elements.

[0054] When an element, such as a layer, is referred to as being "on," "connected to," or "joined to" another element or layer, the element may be directly on, connected to, or joined to the other element or layer, or there may be intervening elements or layers present. However, when an element or layer is referred to as being "directly on," "directly connected to," or "directly joined to" another element or layer, there are no intervening elements or layers present. For this purpose, the term "connected" may refer to physical, electrical, and / or fluidic connections, with or without intervening elements. Furthermore, the DR1-axis, DR2-axis, and DR3-axis are not limited to the three axes of a Cartesian coordinate system, such as the x, y, and z-axes, and may be interpreted in a broader sense. For example, the DR1-axis, DR2-axis, and DR3-axis may be perpendicular to one another, or may represent different directions that are not perpendicular to one another. For purposes of this disclosure, “at least one of X, Y, and Z” and “at least one selected from the group consisting of X, Y, and Z” may be interpreted as only X, only Y, only Z, or any combination of two or more of X, Y, and Z, such as, for example, XYZ, XYY, YZ, and ZZ. The term “and / or” as used herein includes any and all combinations of one or more of the associated listed items.

[0055] Although the terms "first," "second," and the like may be used herein to describe various types of elements, these elements should not be limited by these terms. These terms are used to distinguish one element from another. Therefore, the first element discussed below may be referred to as the second element without departing from the teachings of the present disclosure.

[0056] Spatially relative terms such as "beneath," "beneath," "directly beneath," "lower," "above," "upper," "above," "higher than," "side" (as in, for example, a "side wall"), and the like may be used for descriptive purposes and thereby to describe the relationship of one element to other element(s) as depicted in the drawings. Spatially relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientations depicted in the drawings. For example, if the device in the drawings were turned over, an element described as "beneath" or "beneath" another element or feature would then be oriented "above" the other element or feature. Therefore, the exemplary term "beneath" can encompass both orientations above and below. Furthermore, the device can be oriented differently (e.g., rotated 90° or oriented in other orientations), and thus the spatially relative descriptors used herein can also be interpreted accordingly.

[0057] The terminology used herein is for the purpose of describing particular embodiments and is not limiting. The singular forms "a," "an," and "the" as used herein also include the plural forms unless the context clearly dictates otherwise. Furthermore, the terms "comprises," "comprising," "includes," and / or "comprising" as used herein specify the presence of stated features, integers, steps, operations, elements, components, and / or groups thereof, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and / or groups thereof. Furthermore, the terms "substantially," "about," and other similar terms as used herein are used as terms of approximation rather than degrees, and as such, are used to describe inherent deviations from measured, calculated, and / or provided values ​​that would be recognized by one of ordinary skill in the art.

[0058] Various embodiments are described below with reference to cross-sectional and / or exploded illustrations, which are schematic illustrations of idealized embodiments and / or intermediate structures. As such, variations from the shapes of the illustrated drawings may be expected, for example, as a result of manufacturing techniques and / or tolerances. Therefore, the embodiments disclosed herein should not necessarily be construed as limited to the shapes of specific illustrated regions, but should be construed to include, for example, deviations in shape resulting from manufacturing. In this way, the regions depicted in the drawings may be schematic in nature, and the shapes of these regions may not reflect the actual shapes of regions of the device, and as such, are not necessarily intended to have a limiting meaning.

[0059] As is conventional in the art, some embodiments may be illustrated and described in the accompanying drawings in terms of functional blocks, units, and / or modules. Those skilled in the art will appreciate that these blocks, units, and / or modules are physically implemented by electronic (or optical) circuits such as logic circuits, discrete components, microprocessors, wiring circuits, memory elements, and wiring connections formed using semiconductor-based or other manufacturing techniques. When the blocks, units, and / or modules are implemented by microprocessors or other similar hardware, they may be programmed and controlled using software (e.g., microcode) to perform the various functions discussed herein, and optionally, may be driven by firmware and / or software. Furthermore, each block, unit, and / or module may be implemented by dedicated hardware, or by a combination of dedicated hardware for performing some functions and processors (e.g., one or more programmed processors and associated circuitry) for performing other functions. Additionally, the blocks, units, and / or modules of some embodiments may be physically separated into two or more interacting and individual blocks, units, and / or modules without departing from the scope of the present invention. Additionally, the blocks, units, and / or modules of some embodiments may be physically combined into more complex blocks, units, and / or modules without departing from the scope of the present invention.

[0060] Unless otherwise defined, all terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries, such as terms defined in commonly used dictionaries, should be interpreted to have a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealistic or overly formal sense unless explicitly defined herein.

[0061] Hereinafter, a display device (1) according to a first embodiment of the present invention will be described.

[0062] Referring to FIG. 1, a display device (1) according to a first embodiment of the present invention can be mounted on signage, AR, VR, etc., and can display characters, symbols, images, or videos. In addition, the display device (1) can be mounted on a vehicle. Such a display device (1) can be included in a taillight, a headlight, a rear lamp, a tail lamp, etc. In addition, the display device (1) mounted on a vehicle can display information such as a stop signal or characters to the outside by emitting red opening light, yellow opening light, or white opening light. In addition, the display device (1) can be a high-quality display device having a distinct contrast ratio and a distinct contrast by reducing optical interference between a plurality of light-emitting devices (100) and minimizing interference between driving areas. The display device (1) can include a light-emitting device (100), a display substrate (200), and an electrode body (300).

[0063] Referring to FIGS. 2 and 3, a light-emitting device (100) can generate light. A plurality of light-emitting devices (100) can be formed and supported on a display substrate (200). In addition, a plurality of light-emitting devices (100) can be connected to an electrode body (300) disposed on the display substrate (200). In other words, a plurality of light-emitting devices (100) can be connected to each other through the electrode body (300). In addition, a plurality of light-emitting devices (100) can be individually driven for each region to control brightness or control a light-emitting region. A plurality of light-emitting devices (100) can generate light having different peak wavelengths. Lights generated from a plurality of light-emitting devices (100) can have different energy band gaps. For example, one of the plurality of light-emitting devices (100), a first light-emitting device (100a), can generate red light having a peak wavelength between 600 nm and 750 nm. In addition, another of the plurality of light-emitting devices (100), a second light-emitting device (100b), can generate green light having a peak wavelength between 490 nm and 570 nm. In addition, another of the plurality of light-emitting devices (100), a third light-emitting device (100c), can generate blue light having a peak wavelength between 400 nm and 490 nm. In addition, each of the plurality of light-emitting devices (100) can include a plurality of light-emitting elements (110), a plurality of first electrodes (120), and a plurality of second electrodes (130).

[0064] A plurality of light-emitting elements (110) may be arranged adjacent to each other to generate light. The length of the plurality of light-emitting elements (110) in a first direction may be longer than the length in a second direction perpendicular to the first direction. For example, the length of the plurality of light-emitting elements (110) in the first direction may be formed to be less than 30 μm. In addition, the plurality of light-emitting elements (110) may be arranged spaced apart from each other in the second direction. The plurality of light-emitting elements (110) may be arranged parallel to each other, but is not limited thereto. The distance between the plurality of light-emitting elements (110) may be smaller than the distance between the plurality of light-emitting devices (100). Since the plurality of light-emitting elements (110) may be arranged spaced apart from each other, they may be selectively arranged when arranged on the display substrate (200), thereby reducing the defect rate of the light-emitting device (100). For example, the plurality of light-emitting elements (110) may include a first light-emitting element (110a), a second light-emitting element (110b), and a third light-emitting element (110c) sequentially arranged in the second direction. Although three light-emitting elements (110a, 110b, 110c) have been described as an example, the present invention is not necessarily limited thereto, and the number thereof is not limited.

[0065] The signal, current or voltage supplied to the light emitting device (100) may be supplied dividedly to a plurality of light emitting elements (110) through the electrode body (300), or may be supplied in different amounts. As the signal, current or voltage supplied to each light emitting element (110) increases, the amount of light emitted by the light emitting element (110) may also increase. For example, the signal, current or voltage may be supplied evenly dividedly to the first light emitting element (110a), the second light emitting element (110b) and the third light emitting element (110c), or may be supplied in different amounts. In addition, any one of the plurality of light emitting elements (110) of the first light emitting device (100a) and any one of the plurality of light emitting elements (110) of the second light emitting device (100b) may have different current densities.

[0066] The plurality of light emitting elements (110) can generate UVC (200 nm to 280 nm), UVB (280 nm to 315 nm), UVA (315 nm to 420 nm), blue light, green light, yellow light, red light, infrared light, etc. In addition, the peak wavelength difference of the light of the plurality of light emitting elements (110) constituting one light emitting device (100) can be 5 nm or less. In other words, the plurality of light emitting elements (110) can generate light of the same color. For example, the plurality of light emitting elements (110) included in the first light emitting device (100a) can have a peak wavelength difference of 5 nm or less and can generate red light. The plurality of light emitting elements (110) included in the second light emitting device (100b) can have a peak wavelength difference of 5 nm or less and can generate green light. The plurality of light-emitting elements (110) included in the third light-emitting device (100c) may have a peak wavelength difference of 5 nm or less and may generate blue light.

[0067] These plurality of light-emitting elements (110) may be a light-emitting structure including a substrate and a plurality of layers arranged on the substrate. The light-emitting structure may include a first conductive semiconductor layer (111), an active layer (112), a second conductive semiconductor layer (113), and a light-transmitting layer (114).

[0068] The first conductive semiconductor layer (111) may include a phosphide or nitride semiconductor such as (Al, Ga, In)P or (Al, Ga, In)N. The first conductive semiconductor layer (111) may be doped as n-type and may include one or more impurities such as Si, C, Ge, Sn, Te, Pb, etc. However, the present invention is not limited thereto, and the first conductive semiconductor layer (111) may also be doped as p-type by including a p-type dopant.

[0069] The active layer (112) is a light-emitting layer formed between the first conductive semiconductor layer (111) and the second conductive semiconductor layer (113), and may include a phosphide or nitride semiconductor such as (Al, Ga, In)P or (Al, Ga, In)N, and may include a quantum well structure (QW) including two barrier layers and at least one well layer. In addition, the active layer (112) can adjust the wavelength of the emitted light by adjusting the composition ratio constituting the well layer. Meanwhile, the first conductive semiconductor layer (111) and the active layer (112) may form a mesa.

[0070] The second conductive semiconductor layer (113) may be a semiconductor layer formed on the active layer. The second conductive semiconductor layer (113) may include a phosphide-based or nitride-based semiconductor such as (Al, Ga, In)P or (Al, Ga, In)N. The second conductive semiconductor layer (113) may be doped with a conductive type opposite to that of the first conductive semiconductor layer (111). For example, the second conductive semiconductor layer (113) may be doped with a p-type by including an impurity such as Mg. The second conductive semiconductor layer (113) may be formed as a single layer having a composition such as p-GaN, but is not limited thereto, and may further include an AlGaN layer therein.

[0071] The light-transmitting layer (114) may be disposed on the first conductive semiconductor layer (111) or the second conductive semiconductor layer (113). The light-transmitting layer (114) may be an insulating or conductive substrate for growing the first conductive semiconductor layer (111), the active layer (112), and the second conductive semiconductor layer (113), or may be an insulating or conductive substrate joined by bonding. For example, the light-transmitting layer (114) may include one or more of a sapphire substrate, a silicon carbide substrate, a silicon substrate, a gallium nitride substrate, and an aluminum nitride substrate. In addition, the light-transmitting layer (114) may include a ragged region (114a).

[0072] The ragged region (114a) may be formed on the outer surface of the light-transmitting layer (114). The ragged region (114a) may be formed on the entire circumferential surface of the light-transmitting layer (114), but is not limited thereto. The ragged region (114a) may also be included on the side surface where the plurality of light-emitting elements (110) face each other.

[0073] The distance (D1) between the ragged region (114a) of the first light-emitting element (110a) of the first light-emitting device (100a) and the ragged region (114a) of the second light-emitting element (110b) facing each other may be smaller than the width of the first light-emitting element (110a) or the second light-emitting element (110b) in the second direction. When viewed in cross section, the ragged region (114a) may protrude outward from the semiconductor layer of the light-emitting element.

[0074] The distance (D1) between the plurality of light-emitting elements (110a, 110b, 110c) of the first light-emitting device (100a) may be smaller than the distance (D2) between the first light-emitting device (100a) and the second light-emitting device (100b). By the ragged region (114a), light generated from the plurality of light-emitting elements (110) may be scattered in the light-transmitting layer (114), so that when the plurality of light-emitting elements (110) emit light, they may appear as one light-emitting element (110). In addition, the first light-emitting device (100a) and the second light-emitting device (100b) may prevent color mixing due to the distance (D2) between them.

[0075] A plurality of first electrodes (120) can be electrically connected to the first conductive semiconductor layer (111) of the plurality of light-emitting elements (110) and the electrode body (300). In other words, the plurality of first electrodes (120) can be connected to any one of the plurality of sub-electrodes (310) to be described later. In addition, the plurality of first electrodes (120) can be prevented from being short-circuited by being connected to each other by the sub-electrodes (310).

[0076] A plurality of second electrodes (130) can be electrically connected to the second conductive semiconductor layer (113) of the plurality of light-emitting elements (110) and the electrode body (300). The plurality of second electrodes (130) can be connected to another one of the plurality of sub-electrodes (310). In addition, the plurality of second electrodes (130) can be prevented from being short-circuited by being connected to each other by the sub-electrodes (310).

[0077] A plurality of light emitting devices (100) and electrode bodies (300) may be arranged on a display substrate (200). For example, the display substrate (200) may be a printed circuit board (PCB) substrate on which an electric circuit is printed. In addition, the display substrate (200) may be a thin-film transistor (TFT) backplane.

[0078] The electrode body (300) may be electrically connected to a plurality of light-emitting elements (110) and may provide a signal, current, or voltage to the plurality of light-emitting elements (110). For example, the electrode body (300) may be an electrical circuit arranged on a display substrate (200). The electrode body (300) may include a plurality of sub-electrodes (310) and a common electrode (320).

[0079] A plurality of sub-electrodes (310) are electrically connected to a plurality of light-emitting elements (110) so as to transmit signals, currents, or voltages transmitted from a common electrode (320) to the plurality of light-emitting elements (110). At least some of the plurality of sub-electrodes (310) may be connected to each other via the common electrode (320). In other words, the light-emitting elements (110) of the plurality of light-emitting devices (100) to the plurality of sub-electrodes (310) may be connected to each other. The plurality of sub-electrodes (310) may include a plurality of first sub-electrodes (311) and a plurality of second sub-electrodes (312).

[0080] A plurality of first sub-electrodes (311) may be electrically connected to either the first electrode (120) or the second electrode (130) of the light-emitting device (100). For example, the plurality of first sub-electrodes (311) may be respectively connected to the plurality of first electrodes (120) of the light-emitting device (100). In addition, the plurality of first sub-electrodes (311) may be connected to each other.

[0081] A plurality of second sub-electrodes (312) may be electrically connected to another one of the first electrode (120) and the second electrode (130) of the light emitting device (100). For example, the plurality of second sub-electrodes (312) may be connected to a plurality of second electrodes (130) of the light emitting device (100). In addition, the plurality of second sub-electrodes (312) may be connected to each other.

[0082] The common electrode (320) can be connected to one or more of the plurality of first sub-electrodes (311) and the plurality of second sub-electrodes (312) to transmit a signal, current, or voltage so that the plurality of light-emitting elements (110) can emit light. For example, the common electrode (320) can be electrically connected to the plurality of second sub-electrodes (312).

[0083] Meanwhile, when one of the plurality of light-emitting elements (110) does not light up, a sub-electrode connected to one of the plurality of light-emitting elements (110) can be blocked so that a signal, current, or voltage can be transferred to another part of the plurality of light-emitting elements (110) that can light up. For example, when the first light-emitting element (110a) of the second light-emitting device (100b) is abnormal or not lit, one or more of the plurality of sub-electrodes (310) connected to the first light-emitting element (110a) can be short-circuited. In addition, even when a non-lit light-emitting element (110) occurs, since an additional current can be supplied to adjacent light-emitting elements to increase the amount of light, the loss of luminance caused by the non-lit light-emitting element (110) can be compensated for by the adjacent light-emitting elements (110).

[0084] In addition, under the same light quantity conditions, the amount of signal, current or voltage supplied to each of the drivable light emitting elements (110) in the light emitting device (100) including the short-circuited light emitting element (110) may be greater than the amount of signal, current or voltage supplied to each of the drivable light emitting elements (110) in the light emitting device (100) including the light emitting element (110) without the short-circuit. For example, the amount of signal, current or voltage supplied to the second light emitting device (100b) including the short-circuited first light emitting element (110a) may be greater than the amount of signal, current or voltage supplied to the first light emitting device (100a) and the third light emitting device (100c). In other words, the amount of signal, current, or voltage supplied to the second light-emitting element (110b) and the third light-emitting element (110c) that are turned on of the second light-emitting device (100b) may be greater than the amount of signal, current, or voltage supplied to the light-emitting element (110) of each of the first light-emitting device (100a) and the third light-emitting device (100c).

[0085] Referring to FIGS. 4 to 6, the sub-electrode (310) can be short-circuited after the molding layer (M) laminated on the sub-electrode (310) is removed. When the sub-electrode (310) is short-circuited by a laser, a short-circuit area (D) can be formed on the sub-electrode (310). It is not necessarily limited to a laser, and any chemical process or physical process such as etching is possible. An inclined surface (310a) can be formed on the short-circuited sub-electrode (310), and a ragged area can be formed on the inclined surface (310a). In addition, when the sub-electrode (310) is short-circuited by a laser, a groove (200a) can be formed on the display substrate (200). A molding layer (M) can be laminated again on the short-circuited sub-electrode (310). The molding layer (M) can be laminated on the short-circuited sub-electrode (310) to cover the ragged area of ​​the interface (310a) and the groove (200a). Since the molding layer (M) can cover the ragged area of ​​the interface (310a), the adhesive strength can be maintained firmly. In addition, since the molding layer (M) can cover the groove (200a), electromigration can be prevented from occurring in the short-circuited sub-electrode (310).

[0086] The molding layer (M) can be any insulating material, such as PSR, silicon, photoresist, SiO2, EMC, polyimide, etc. The molding layer (M) may be formed to be lower than the lower surface of the light-emitting element, or in another embodiment, the molding layer (M) may be formed to cover at least one of the side or upper surface of the light-transmitting layer (114).

[0087] Hereinafter, a display device (1) according to a second embodiment of the present invention will be described with reference to FIGS. 7 and 8. In describing the second embodiment, there is a difference in that a marker (400) may be further included, and this difference will be primarily described.

[0088] The marker (400) may be placed on the display substrate (200) so that at least a portion of the plurality of light-emitting devices (100) and the electrode body (300) is not covered. For example, the marker (400) may be an insulating material such as PSR, silicon, photoresist, SiO2, EMC, polyimide, etc. In addition, the marker (400) may be formed with a light-emitting hole (410) and a plurality of electrode holes (420).

[0089] The light-emitting hole (410) is a hole for exposing the light-emitting device (100) to the outside. The light-emitting hole (410) is formed in a plurality of pieces so that the plurality of light-emitting devices (100) can be exposed to the outside. The plurality of light-emitting holes (410) may be formed in a number corresponding to the plurality of light-emitting devices (100). Alternatively, the plurality of light-emitting holes (410) may be formed in a number corresponding to the plurality of light-emitting elements (110), or may be formed in a number smaller than the number of the plurality of light-emitting elements (110). The plurality of light-emitting holes (410) may be arranged in a matrix form to correspond to the positions of the plurality of light-emitting devices (100), or may be arranged spaced apart from each other in a second direction. Light generated from the plurality of light-emitting elements (110) can be irradiated to the outside by the light-emitting holes (410).

[0090] The area of ​​the light emitting hole (410) may be formed to be larger than the area of ​​the light emitting device (100). In addition, the size of the light emitting hole (410) may be formed to be different from the size of the electrode hole (420). In other words, the area of ​​the light emitting hole (410) may be formed to be larger than the area of ​​the electrode hole (420). The light emitting hole (410) may be arranged to be spaced apart from the electrode hole (420) in the first direction. The distance (L1) between the plurality of light emitting holes (410) may be formed to be larger than the distance (L2) between the plurality of first electrode holes (420) and the light emitting hole (410). The distance (L1) between the plurality of light emitting holes (410) may be formed to be larger than the distance (L3) between the plurality of electrode holes (420). The distance (L2) between the light emitting hole (410) and the electrode hole (420) may be smaller than the diameter of the electrode hole (420), but is not limited thereto.

[0091] A plurality of electrode holes (420) may be formed in a matrix form or spaced apart from each other in the second direction in the marker (400). The plurality of electrode holes (420) may expose a portion of the plurality of sub-electrodes (310) to the outside. In other words, the plurality of electrode holes (420) may expose the plurality of first sub-electrodes (311) to the outside. Alternatively, the plurality of electrode holes (420) may have a thickness smaller than the thickness of the surrounding area. For example, the plurality of electrode holes (420) may be formed in a circular shape, but is not limited thereto, and may be formed in various shapes such as a square, a triangle, a polygon, etc. Through these electrode holes (420), the laser may be irradiated to the first sub-electrode (311) to short-circuit the first sub-electrode (311), thereby blocking a signal, current, or voltage from being supplied to the unlit light-emitting element (110).

[0092] In addition, a plurality of electrode holes (420) may be arranged to be spaced apart from the light-emitting hole (410) in the first direction. Since a marker (400) may be positioned between the electrode hole (420) and the light-emitting hole (410), when the first sub-electrode (311) is processed by a laser, the plurality of light-emitting elements (110) may be prevented from being affected. The plurality of electrode holes (420) may be arranged to overlap the light-emitting hole (410) when projected in the first direction toward the light-emitting hole (410). The distance (L3) between the plurality of first electrode holes (420) may be smaller than or equal to the distance (L2) between the plurality of first electrode holes (420) and the light-emitting hole (410).

[0093] The height of the marker (400) may be smaller than the height of the light-emitting element (110). Therefore, when an external process such as laser irradiation is performed to short-circuit the sub-electrode (310) connected to the unlit light-emitting element (110), the position of the sub-electrode (310) located within the electrode hole (420) can be accurately recognized from the outside, and short-circuiting of the sub-electrode (310) can be facilitated.

[0094] However, it is not necessarily limited to this, and the marker (400) may be formed to cover the light emitting element (110) and may include an electrode hole (420).

[0095] In addition, a molding (not shown) may be additionally laminated on the upper portion of the marker (400). The molding may be a light-transmitting material so that the position of the electrode hole (420) can be recognized from the outside. Therefore, the sub-electrode (310) connected to the unlit light-emitting element (110) can be effectively short-circuited. The molding and the marker (400) may be formed of different materials or the same material. In addition, the molding and the marker (400) may have different light blocking rates. Meanwhile, the light-emitting hole (410) and the electrode hole (420) may be formed in the molding. By means of such molding, the position of the electrode hole (420) can be easily identified, so that the sub-electrode (310) connected to the unlit light-emitting element (110) can be easily short-circuited.

[0096] Hereinafter, a display device (1) according to a third embodiment of the present invention will be described with reference to FIGS. 9 and 10.

[0097] In explaining the third embodiment, the electrode hole (420) described above is referred to as the first electrode hole (420). In addition, in explaining the third embodiment, there is a difference in that a plurality of second electrode holes (430) can be further formed in the marker (400), and this difference will be mainly explained.

[0098] The plurality of second electrode holes (430) can expose other parts of the plurality of sub-electrodes (310) to the outside. In other words, the plurality of second electrode holes (430) can expose the plurality of second sub-electrodes (312) to the outside. The laser can short-circuit the second sub-electrodes (312) through the plurality of second electrode holes (430). The plurality of second electrode holes (430) can be formed in the marker (400) to be spaced apart from each other in the second direction. The plurality of second electrode holes (430) can be arranged to be spaced apart from the light-emitting hole (410) in the first direction. Since the marker (400) can be positioned between the second electrode hole (430) and the light-emitting hole (410), when the second sub-electrodes (312) are processed by the laser, the plurality of light-emitting elements (110) can be prevented from being affected.

[0099] In addition, when a plurality of first electrode holes (420) are arranged to face one side of the light-emitting hole (410), a plurality of second electrode holes (430) may be arranged to face the other side opposite to one side of the light-emitting hole (410). The plurality of second electrode holes (430) may be arranged to overlap the light-emitting hole (410) when projected in the first direction toward the light-emitting hole (410). In other words, the light-emitting hole (410) may be located between the plurality of first electrode holes (420) and the plurality of second electrode holes (430).

[0100] The size of the plurality of second electrode holes (430) may be formed to be the same as the size of the plurality of first electrode holes (420), but is not limited thereto. In other words, one of the second electrode holes (430) and the first electrode hole (420) may be formed to be larger than the other of the second electrode holes (430) and the first electrode hole (420). The second electrode hole (430) may be formed to be smaller than the size of the light-emitting hole (410). The area of ​​the second electrode hole (430) may be formed to be smaller than the area of ​​the light-emitting hole (410).

[0101] The distance (L4) between the light emitting hole (410) and the second electrode hole (430) may be smaller than the diameter of the second electrode hole (430). The distance (L5) between the plurality of second electrode holes (430) may be formed smaller than the distance (L1) between the plurality of light emitting holes (410). The distance (L5) between the plurality of second electrode holes (430) may be the same as the distance (L3) between the plurality of first electrode holes (420). The distance (L4) between the light emitting hole (410) and the second electrode hole (430) may be the same as the distance (L2) between the light emitting hole (410) and the first electrode hole (420). The distance (L4) between the plurality of second electrode holes (430) and the light emitting hole (410) may be formed smaller than the distance (L1) between the plurality of light emitting holes (410). Additionally, the distance between the first electrode hole (420) and the second electrode hole (430) may be greater than the length of the light-emitting hole (410) in the first direction.

[0102] Hereinafter, with reference to FIGS. 11 and 12, a display device (1) according to a fourth embodiment of the present invention is described.

[0103] In explaining the fourth embodiment, there is a difference in that the second conductive semiconductor layers (113) of the plurality of light-emitting elements (110) can be connected to each other and formed as an integral body, and this difference will be mainly explained.

[0104] The second conductive semiconductor layers (113) of the plurality of light-emitting elements (110) may be connected to each other and formed as an integral body. In other words, the second conductive semiconductor layers (113) formed as an integral body may be laminated on the plurality of active layers (112). In addition, the light-transmitting layers (114) of the plurality of light-emitting elements (110) may be connected to each other and formed as an integral body, and may be laminated on the second conductive semiconductor layers (113) formed as an integral body. By the light-transmitting layers (114) and the second conductive semiconductor layers (113), the plurality of light-emitting elements (110) may be moved at once and placed on the display substrate (200), thereby increasing manufacturing efficiency.

[0105] Referring to Fig. 11, as a first example, a plurality of second electrodes (130) can be electrically connected to a second conductive semiconductor layer (113) formed integrally. At this time, when an unlit light-emitting element (110) is generated, a signal, current, or voltage supplied to the lit light-emitting elements (110) can be increased by short-circuiting either the first sub-electrode (311) connected to the first electrode (120) or the second sub-electrode (312) connected to the second electrode (130).

[0106] Referring to Fig. 12, as a second example, a plurality of second electrodes (130) may be connected to each other to form an integral body and may be electrically connected to an integral second conductive semiconductor layer (113). In other words, one second electrode (130) may be electrically connected to an integrally formed second conductive semiconductor layer (113). In a state where such a second electrode (130) is formed as one body, when an unlit light-emitting element (110) is generated, the signal, current, or voltage supplied to the lit light-emitting elements (110) may be increased by short-circuiting the first sub-electrode (311) connected to the first electrode (120).

[0107] Hereinafter, with reference to FIG. 13, a display device (1) according to a fifth embodiment of the present invention is described.

[0108] In explaining the fifth embodiment, there is a difference in that the first conductive semiconductor layers (111) of the plurality of light-emitting elements (110) are arranged in a radial shape based on the center of the second conductive semiconductor layer (113), and this difference will be mainly explained.

[0109] The first conductive semiconductor layers (111) of the plurality of light-emitting elements (110) may be arranged in a radial shape based on the center of the second conductive semiconductor layer (113) formed as an integral body. Since the plurality of first conductive semiconductor layers (111) may be arranged in a radial shape, even if any one of the plurality of light-emitting elements (110) is not turned on, the light generated from the lit light-emitting elements (110) appears to be concentrated in the center, thereby preventing the unlit light-emitting elements (110) from being recognized from the outside. In addition, even if any one unlit element exists, the center portion of the light can be prevented from moving. For example, the first conductive semiconductor layer (111) may be formed in a triangular shape, but is not limited thereto, and may be formed in various shapes such as a circle, a square, and a polygon.

[0110] Although the embodiments of the present invention have been described as specific embodiments, these are merely examples, and the present invention is not limited thereto, but should be construed to have the broadest scope in accordance with the technical concepts disclosed in this specification. Those skilled in the art may combine / substitute the disclosed embodiments to implement patterns of shapes not specified, but this also does not depart from the scope of the present invention. In addition, those skilled in the art may easily modify or alter the disclosed embodiments based on this specification, and it is clear that such modifications or alterations also fall within the scope of the present invention.

Claims

1. Display substrate; A plurality of light-emitting elements supported on the display substrate and generating light; and Including an electrode body that electrically connects the display substrate and the plurality of light-emitting elements, The difference in peak wavelength of light of the plurality of light-emitting elements is 5 nm or less. Display device.

2. In paragraph 1, Each of the above plurality of light-emitting elements, First challenge type semiconductor layer; An active layer laminated on the first conductive semiconductor layer; A second conductive semiconductor layer laminated on the active layer; and Including a light-transmitting layer laminated on the second conductive semiconductor layer, Display device.

3. In paragraph 2, The plurality of light-emitting elements are arranged adjacent to each other, A ragged area is formed in the above light-transmitting layer, The above raged area is formed on the surface of the outer surface of the light-transmitting layer facing the plurality of light-emitting elements. Display device.

4. In paragraph 2, The second conductive semiconductor layer of each of the plurality of light-emitting elements is connected to each other and formed as an integral body, The light-transmitting layers of each of the plurality of light-emitting elements are connected to each other and formed as an integral body. Display device.

5. In paragraph 4, A plurality of first electrodes electrically connected to the first conductive semiconductor layer of the plurality of light-emitting elements and the electrode body; and Further comprising a plurality of second electrodes electrically connected to the second conductive semiconductor layer of the plurality of light-emitting elements and the electrode body. Display device.

6. In paragraph 5, The above plurality of second electrodes are connected to each other and formed as an integral body. Display device.

7. In paragraph 4, The first conductive semiconductor layers of the plurality of light-emitting elements are arranged in a radial shape based on the center of the second conductive semiconductor layer formed integrally. Display device.

8. Display substrate; A light-emitting device supported on the display substrate and generating light; An electrode body electrically connecting the display substrate and the light-emitting device; and A marker is disposed on the display substrate, and includes an electrode hole for exposing at least a part of the electrode body to the outside and a light-emitting hole for exposing the light-emitting device to the outside. The above electrode hole and the above light-emitting hole are formed with different sizes, Display device.

9. In paragraph 8, The area of ​​the above light-emitting hole is larger than the area of ​​the above electrode hole. Display device.

10. Display substrate; A light-emitting device supported on the display substrate and generating light; An electrode body electrically connecting the display substrate and the light-emitting device; and A marker is disposed on the display substrate and has an electrode hole formed to expose at least a part of the electrode body to the outside and a light-emitting hole formed to expose the light-emitting device to the outside. The above electrode hole and the above light emitting hole are spaced apart from each other, Display device.

11. In paragraph 10, The distance between the electrode hole and the light-emitting hole is smaller than the diameter of the electrode hole. Display device.

12. In paragraph 10, The above light emitting device, It includes a plurality of light-emitting elements that are connected to the electrode body and generate light, The above electrode body, a plurality of sub-electrodes connected to each of the light-emitting elements; and comprising a common electrode connected to at least some of the plurality of sub-electrodes, The above electrode holes are formed in multiple numbers, and at least some of the multiple sub-electrodes are exposed to the outside. Display device.

13. In paragraph 12, Each of the above plurality of light-emitting elements, First challenge type semiconductor layer; An active layer laminated on the first conductive semiconductor layer; A second conductive semiconductor layer laminated on the active layer; and Including a light-transmitting layer laminated on the second conductive semiconductor layer, The above light emitting device, A first electrode electrically connected to the first conductive semiconductor layer; and Further comprising a second electrode electrically connected to the second conductive semiconductor layer, The above multiple sub-electrodes are, a plurality of first sub-electrodes connected to one of the first electrode and the second electrode; and comprising a plurality of second sub-electrodes connected to another one of the first electrode and the second electrode; The above plurality of electrode holes are, Including a plurality of first electrode holes for exposing the plurality of first sub-electrodes to the outside, Display device.

14. In paragraph 13, The distance between the plurality of first electrode holes is less than or equal to the distance between the plurality of first electrode holes and the light-emitting hole. Display device.

15. In paragraph 13, The above light emitting device and the above light emitting hole are formed in multiple numbers and are spaced apart from each other, The distance between the plurality of light-emitting holes is greater than the distance between the plurality of first electrode holes. Display device.

16. In paragraph 15, The distance between the plurality of light-emitting holes is longer than the diameter of the electrode hole. Display device.

17. In paragraph 15, The direction in which the plurality of light-emitting holes are arranged and the direction in which the plurality of first electrode holes are arranged are the same. Display device.

18. In paragraph 13, The above plurality of electrode holes are, Including a plurality of second electrode holes for exposing the plurality of second sub-electrodes to the outside, Display device.

19. In paragraph 18, The above light-emitting hole is located between the plurality of first electrode holes and the plurality of second electrode holes. Display device.

20. In paragraph 18, The above light emitting device and the above light emitting hole are formed in multiple numbers and are spaced apart from each other, The distance between the plurality of light-emitting holes is smaller than the distance between the first electrode hole and the second electrode hole. Display device.

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