Light-emitting apparatus and display apparatus

Abstract

Disclosed in the present disclosure are a light-emitting apparatus and a display apparatus. The light-emitting apparatus comprises a transparent layer, three light-emitting elements, a wiring layer and an insulating layer; the transparent layer comprises a first edge, a second edge, a third edge and a fourth edge which are sequentially connected, the fourth edge being connected to the first edge; the three light-emitting elements sequentially comprise a first light-emitting element, a second light-emitting element and a third light-emitting element in a direction from the second edge to the fourth edge, each light-emitting element emitting light of a different color, and the size of at least one light-emitting element being smaller than that of any other light-emitting element; the wiring layer is arranged above the three light-emitting elements, the wiring layer being electrically connected to each of the light-emitting elements; the insulating layer is arranged on part of the wiring layer. Thus, by controlling the size ratio of the light-emitting elements which emit light of different colors within the light-emitting apparatus, the present invention improves the light emitting brightness of the light-emitting apparatus.

Description

A light-emitting device and a display device Technical Field

[0001] This invention relates to the field of semiconductor device technology, and more specifically to a light-emitting device and a display device. Background Technology

[0002] LED chips, due to their high reliability, long lifespan, and low power consumption, are widely used in various fields such as display devices, automotive lighting, and general lighting. For example, LED chips can be used as backlight sources for various display devices. Currently, the size of micro-LED chips (generally less than 100nm) is too small, making the process of attaching and fixing the chips to the display panel quite difficult. Therefore, a method is adopted to form three RGB chips into a single pixel package, which simplifies the process of attaching and fixing the pixel to the display panel.

[0003] Existing unit pixel packages also have some unresolved issues. For example, a typical unit pixel package contains three light-emitting elements with different emission colors. Because light-emitting elements of the same size have different light emission amounts, the emission color ratio is not up to standard, which in turn affects the overall brightness of the unit pixel. Furthermore, increasing the brightness of a single chip is currently quite difficult. Increasing the number of light-emitting elements in a unit pixel to increase the light emission amount of a certain color would increase the overall area of ​​the unit pixel, which is not conducive to device miniaturization. Technical solutions

[0004] In view of the shortcomings of the prior art described above, the purpose of the present invention is to provide a light-emitting device and a display device to control the proportion of each color in a pixel unit, so as to make the light output brightness of a single pixel unit higher.

[0005] To achieve the above and other related objectives, the present invention provides a light-emitting device, comprising:

[0006] A transparent layer includes a first side, a second side, a third side, and a fourth side connected in sequence, wherein the fourth side is connected to the first side;

[0007] The three light-emitting elements are arranged sequentially along the direction from the second side to the fourth side, including a first light-emitting element, a second light-emitting element, and a third light-emitting element, wherein at least one light-emitting element has a smaller size than any of the other light-emitting elements;

[0008] A wiring layer is disposed above the three light-emitting elements, and the wiring layer is electrically connected to each light-emitting element;

[0009] An insulating layer is applied to a portion of the wiring layer.

[0010] According to one aspect of the present invention, the present invention also provides a display device, the display device comprising:

[0011] Display substrate;

[0012] At least one light-emitting device is disposed on the surface of a display substrate, and the light-emitting device is electrically connected to the display substrate. The light-emitting device is the aforementioned light-emitting device. Beneficial effects

[0013] Compared with the prior art, the light-emitting device and display device of the present invention have at least the following beneficial effects:

[0014] The light-emitting device of the present invention includes a transparent layer, three light-emitting elements, a wiring layer, and an insulating layer. The transparent layer includes a first side, a second side, a third side, and a fourth side connected in sequence, wherein the fourth side is connected to the first side. The three light-emitting elements include a first light-emitting element, a second light-emitting element, and a third light-emitting element in sequence along the direction from the second side to the fourth side. Each light-emitting element emits a different color of light, and at least one light-emitting element is smaller than the size of any of the other light-emitting elements. The wiring layer is disposed above the three light-emitting elements and is electrically connected to each of the light-emitting elements. The insulating layer is disposed on a portion of the wiring layer. Therefore, the present invention optimizes the light emission ratio configuration of the light-emitting device by controlling the size ratio of the light-emitting elements emitting different colors of light within the light-emitting device, approaching the optimal ratio after combining RGB to form white light.

[0015] Furthermore, the three light-emitting elements within the light-emitting device are a red light-emitting element, a green light-emitting element, and a blue light-emitting element. The sizes of the green and blue light-emitting elements are increased to optimize the proportion of different colors emitted by the light-emitting device. Simultaneously, increasing the size of the blue light-emitting element also improves its anti-static capability.

[0016] Furthermore, in order to keep the overall size of the light-emitting device unchanged, the center of the blue light-emitting element is translated relative to the center of the red or green light-emitting element, so that the light-emitting area of ​​the blue light-emitting element is symmetrical from left to right, and the distance between the electrodes of the blue light-emitting element and the wiring of adjacent pads is increased, reducing the risk of short circuit. Attached Figure Description

[0017] Figure 1 is a top view of the light-emitting device according to an embodiment of the present invention;

[0018] Figure 2 is a top view of the light-emitting device according to another embodiment of the present invention;

[0019] Figure 3 is a schematic diagram of the structure along the B-B' direction in Figure 1 according to an embodiment of the present invention;

[0020] Figure 4 is a schematic diagram of the structure along the B-B' direction in Figure 1 according to an embodiment of the present invention;

[0021] Figure 5 is a schematic diagram of the display device in an embodiment of the present invention.

[0022] List of reference numerals in the attached diagram:

[0023] 01 First side 02 Second side 03 Third side 04 Fourth side 100 Transparent layer 200 Adhesive layer 300 Filler layer 401 First light-emitting element 402 Second light-emitting element 403 Third light-emitting element 410 First electrode 420 Second electrode 500 Wiring layer 501 First layer 502 Second layer 510 First pad wiring 522 Second pad wiring 533 Third pad wiring 544 Fourth pad wiring 550 Connecting wiring 601 First protective electrode 602 Second protective electrode 603 Third protective electrode 604 Fourth protective electrode 700 Insulating layer Embodiments of the present invention

[0024] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.

[0025] It should be understood that the illustrations provided in the embodiments of this invention are merely schematic representations of the basic concept of the invention. Although the illustrations only show components relevant to the invention and are not drawn according to the actual number, shape, and size of components in implementation, the shape, quantity, and proportion of each component can be arbitrarily changed in actual implementation, and the component layout may also be more complex. The structures, proportions, sizes, etc., shown in the accompanying drawings are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and objectives that the invention can produce, should still fall within the scope of the technical content disclosed in this application.

[0026] To improve the light emission ratio of different colors within the light-emitting device and increase the light emission brightness of the device, this embodiment provides a light-emitting device, including:

[0027] A transparent layer includes a first side, a second side, a third side, and a fourth side connected in sequence, wherein the fourth side is connected to the first side;

[0028] The three light-emitting elements are arranged sequentially along the direction from the second side to the fourth side, including a first light-emitting element, a second light-emitting element, and a third light-emitting element, wherein at least one light-emitting element has a smaller size than any of the other light-emitting elements;

[0029] A wiring layer is disposed above the three light-emitting elements, and the wiring layer is electrically connected to each light-emitting element;

[0030] An insulating layer is disposed on a portion of the wiring layer. Therefore, this embodiment improves the light output brightness of the light-emitting device by controlling the size ratio of the light-emitting elements emitting different colors of light within the light-emitting device.

[0031] Optionally, the first light-emitting element is a red light-emitting element, the second light-emitting element is a green light-emitting element, and the third light-emitting element is a blue light-emitting element.

[0032] Optionally, the size of the red light-emitting element is smaller than that of the green light-emitting element, and the size of the red light-emitting element is smaller than that of the blue light-emitting element.

[0033] Optionally, the size of the green light-emitting element is equal to the size of the blue light-emitting element.

[0034] Optionally, the wiring layer includes pad wiring, which includes a first pad wiring, a second pad wiring, a third pad wiring, and a fourth pad wiring. The first pad wiring and the second pad wiring are disposed on both sides of the red light-emitting element, and the third pad wiring and the fourth pad wiring are disposed on both sides of the blue light-emitting element.

[0035] Optionally, the size of the green light-emitting element is larger than the size of the blue light-emitting element.

[0036] Optionally, a first electrode and a second electrode are sequentially disposed on a red light-emitting element along the direction from the first side to the third side; a first electrode and a second electrode are sequentially disposed on a green light-emitting element along the direction from the first side to the third side; and a second electrode and a first electrode are sequentially disposed on a blue light-emitting element along the direction from the first side to the third side.

[0037] Optionally, the red light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side, the green light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side, and the blue light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side.

[0038] Optionally, the first electrode is a P electrode and the second electrode is an N electrode.

[0039] Optionally, the centers of the red and green light-emitting elements are aligned, while the center of the blue light-emitting element is shifted relative to the center of the green light-emitting element towards the first side. Since there is a light-emitting area below the P-electrode of the LED, shifting the entire blue light-emitting element towards the first side—meaning that normally the centers of the three light-emitting elements are aligned—in this embodiment, shifting the center of the blue light-emitting element relative to the center of the green light-emitting element towards the first side allows the light-emitting area of ​​the blue light-emitting element to be centered, increasing the light-emitting area and further increasing the light extraction efficiency of the blue light-emitting element. This achieves a better light extraction effect without changing the overall size of the light-emitting device.

[0040] Optionally, along the direction from the first side to the third side, each light-emitting element includes a first end and a second end, the distance D3 between the first end of the blue light-emitting element and the first end of the green light-emitting element is 0~20μm, and the distance D5 between the second end of the blue light-emitting element and the second end of the green light-emitting element is 0~20μm.

[0041] Optionally, the wiring layer further includes connection wiring, wherein the first pad wiring is connected to the first electrode of the red light-emitting element, the first electrode of the green light-emitting element and the first electrode of the blue light-emitting element through the connection wiring; the second pad wiring is connected to the second electrode of the red light-emitting element through the connection wiring; the third pad wiring is connected to the second electrode of the green light-emitting element through the connection wiring; and the fourth pad wiring is connected to the second electrode of the blue light-emitting element through the connection wiring.

[0042] Optionally, the distance D4 between the edge of the electrode adjacent to the third pad wiring and the edge of the blue light-emitting element and the third pad wiring is greater than 5 μm along the direction from the first side to the third side.

[0043] Optionally, the absolute value of the difference between the distance D2 between the edge of the blue light-emitting element and the fourth side of the transparent layer and the distance D1 between the edge of the red light-emitting element and the second side of the transparent layer is less than 20 μmnm, which can prevent color difference and ensure good light output effect.

[0044] Optionally, the red light-emitting element, the green light-emitting element, and the blue light-emitting element are arranged sequentially along the second to fourth sides of the transparent layer.

[0045] Optionally, the light-emitting device further includes:

[0046] A filling layer is placed between adjacent light-emitting elements.

[0047] Optionally, the filler layer contains a black filler component, which includes at least one of carbon black, titanium nitride, iron oxide, magnetite, or iron powder.

[0048] Optionally, the wiring layer includes:

[0049] The first layer is bonded to the light-emitting element and the filling layer, and forms an electrical connection with the light-emitting element;

[0050] The second layer has one side electrically connected to the first layer.

[0051] Optionally, the light-emitting device further includes:

[0052] An adhesive layer is placed above the transparent layer, and three light-emitting elements are spaced apart on the adhesive layer.

[0053] Optionally, the light-emitting device further includes:

[0054] Multiple protective electrodes are formed at intervals on the wiring layer and are electrically connected to the wiring layer.

[0055] This embodiment also provides a display device, including:

[0056] Display substrate;

[0057] At least one light-emitting device is disposed on the surface of a display substrate, and the light-emitting device is electrically connected to the display substrate. The light-emitting device is the aforementioned light-emitting device.

[0058] The present invention will now be described in detail with reference to specific embodiments. Example 1

[0059] This embodiment provides a light-emitting device. Referring to FIG1, the light-emitting device includes a transparent layer 100, three light-emitting elements, a wiring layer 500, and an insulating layer 700.

[0060] Referring to Figure 1, the transparent layer 100 has a light transmittance of over 60% in the visible light range. Optionally, the transparent layer 100 can be a transparent substrate, such as PET, glass, quartz, sapphire, or transparent ceramic, which are light-transmitting substrates. The light-emitting device needs to have a certain thickness for user convenience; therefore, the thickness of the transparent layer 100 is preferably greater than 10 μm, specifically 30 μm~50 μm, 50 μm~100 μm, or 100 μm~300 μm. Multiple light-emitting elements are disposed on the surface of the transparent layer 100. The side of the transparent layer 100 away from the light-emitting elements is the light-emitting surface of the light-emitting device, meaning that all light emitted from the light-emitting elements passes through the transparent layer 100 and is emitted outwards. In this embodiment, the transparent layer 100 includes a first side 01, a second side 02, a third side 03, and a fourth side 04 connected in sequence, wherein the fourth side 04 is connected to the first side 01.

[0061] Three light-emitting elements are disposed on the transparent layer 100, and include a first light-emitting element, a second light-emitting element, and a third light-emitting element along the direction from the second side 02 to the fourth side 04 of the transparent layer 100. Each light-emitting element emits a different color of light, and at least one light-emitting element is smaller than the size of any of the other light-emitting elements. In this embodiment, the first light-emitting element is a red light-emitting element 401, the second light-emitting element is a green light-emitting element 402, and the third light-emitting element is a blue light-emitting element 403.

[0062] Optionally, referring to Figure 3, since different light-emitting elements typically have different thicknesses, an adhesive layer 200 is provided between the transparent layer 100 and the light-emitting elements. The adhesive layer 200 can be made of an elastic material such as silicone. Therefore, the light-emitting elements are partially embedded in the adhesive layer 200 to maintain the electrode surfaces of the light-emitting elements at the same horizontal level and reduce the height difference between the light-emitting surfaces of each element. This allows the light emitted from the side of the light-emitting element to be absorbed as much as possible by the filling layer 300 described below, thereby improving the contrast of the light-emitting device. The thickness of the adhesive layer 200 is preferably 1μm to 15μm or 3μm to 10μm. If the thickness of the adhesive layer 200 is greater than 15μm, the alignment accuracy of the light-emitting elements may be affected.

[0063] In this embodiment, the light-emitting element mainly refers to a micron-sized light-emitting diode, with a width or length ranging from 2 to 5 μm, 5 to 10 μm, 10 to 20 μm, 20 to 50 μm or 50 to 100 μm, and a thickness ranging from 2 to 15 μm, preferably 5 to 10 μm.

[0064] Specifically, each light-emitting element includes a semiconductor stack layer, which may include a first semiconductor layer, a second semiconductor layer, and an active layer disposed between them, arranged in sequence. The first semiconductor layer is an N-type semiconductor layer, the second semiconductor layer is a P-type semiconductor layer, and the active layer is a multilayer quantum well layer, which can provide red, green, or blue light radiation. The N-type semiconductor layer, the multilayer quantum well layer, and the P-type semiconductor layer are only the basic building blocks of the light-emitting element. In addition, the light-emitting element may include other functional structural layers that optimize its performance. In this embodiment, referring to FIG1, the three light-emitting elements sequentially include a first light-emitting element, a second light-emitting element, and a third light-emitting element along the direction from the second side 02 to the fourth side 04 of the transparent layer 100. The first light-emitting element is a red light-emitting element 401, the second light-emitting element is a green light-emitting element 402, and the third light-emitting element is a blue light-emitting element 403.

[0065] Optionally, referring to Figure 3, a filling layer 300 is provided between adjacent light-emitting elements or around the sidewalls of the light-emitting elements. This filling layer 300 prevents color mixing or light interference between adjacent light-emitting elements, thereby improving the contrast of the light-emitting device. The filling layer 300 is provided as a black adhesive layer that absorbs light. Specifically, the filling layer 300 can be a component formed by dispersing a black filler component with a particle size of no more than 1 μm in transparent or translucent materials such as silicone, epoxy resin, polyimide, low-temperature glass, polysiloxane, and polysilazane. The black filler component in the filling layer 300 includes, but is not limited to, carbon black, titanium nitride, iron oxide, magnetite, and iron powder. The particle size range of the black filler component is preferably 10~100 nm, or 100~200 nm, or 200~300 nm, or 300 nm~500 nm. The filling layer 300 can also be made of black dye.

[0066] Referring to Figure 3, a wiring layer 500 is disposed above three light-emitting elements and a filling layer 300, and is electrically connected to each light-emitting element through metal interconnects therein. The wiring layer 500 includes a plurality of wirings, and an insulating layer 700 is filled around the wiring layer 500 to electrically isolate adjacent wirings. The wiring layer 500 can be a single layer or multiple layers made of at least one material selected from titanium, copper, chromium, nickel, gold, platinum, aluminum, titanium nitride, tantalum nitride, or tantalum. In this embodiment, the wiring layer 500 includes a two-layer structure, specifically a first layer 501 and a second layer 502. The first layer 501 is in direct contact with the light-emitting elements, and the second layer 502 is formed on top of the first layer 501. The first layer 501 is used to adhere the second layer 502 to the light-emitting elements and the filling layer 300, and the second layer 502 mainly serves a conductive function. The material of the first layer 501 includes, but is not limited to, one or more of titanium, nickel, titanium nitride, tantalum nitride, or tantalum, and the material of the second layer 502 includes, but is not limited to, one or more of copper, aluminum, or gold. The wiring layer 500 can be prepared by sputtering, vapor deposition, or other methods.

[0067] Referring to Figure 1, the wiring layer 500 includes pad wiring, which includes a first pad wiring 510, a second pad wiring 520, a third pad wiring 530, and a fourth pad wiring 540. The first pad wiring 510 and the second pad wiring 520 are disposed on both sides of the red light-emitting element 401. The third pad wiring 530 and the fourth pad wiring 540 are disposed on both sides of the blue light-emitting element 403.

[0068] Referring to Figure 3, an insulating layer 700 is formed on the wiring layer 500. Part of the insulating layer 700 can be removed by methods such as exposure and development, exposing a portion of the surface of the wiring layer 500. The insulating layer 700 can be formed from materials such as epoxy resin, polysiloxane, or photoresist, which can oxidize the surface wiring layer 500 and provide electrical isolation between different wirings, preventing leakage failure of the light-emitting device.

[0069] Optionally, referring to Figures 1 and 4, a protective electrode is also formed on the exposed portion of the wiring layer 500 of the insulating layer 700. When the forming material of the wiring layer 500 is easily oxidized, for example, in some embodiments when the surface metal of the wiring layer 500 is Cu, forming a protective electrode on the exposed wiring layer 500 can protect the exposed wiring layer 500. In this embodiment, the protective electrode includes a first protective electrode 601, a second protective electrode 602, a third protective electrode 603, and a fourth protective electrode 604. The first protective electrode 601 is formed on the first pad wiring 510, the second protective electrode 602 is formed on the second pad wiring 520, the third protective electrode 603 is formed on the third pad wiring 530, and the fourth protective electrode 604 is formed on the fourth pad wiring 540.

[0070] Because existing light-emitting devices, or unit pixel packages, contain three light-emitting elements with different emitted colors, the varying light output of these elements of the same size leads to substandard color matching, thus affecting the overall brightness of the unit pixel. Furthermore, increasing the brightness of a single chip is challenging. Increasing the number of light-emitting elements within the unit pixel to improve the output of a particular color would increase the overall area of ​​the unit pixel, hindering device miniaturization. To address this problem, this embodiment sets the sizes of the chips for different emitted colors within the light-emitting device to achieve the desired color matching without increasing the device's overall size, while maintaining its performance.

[0071] Specifically, in this embodiment, referring to FIG1, the size of the red light-emitting element 401 is smaller than the size of the green light-emitting element 402, and the size of the red light-emitting element 401 is smaller than the size of the blue light-emitting element 403. This improves the light output brightness of the green light-emitting element 402 and the blue light-emitting element 403, resulting in a better overall light output brightness for the light-emitting device. Furthermore, the increased size of the blue light-emitting element further enhances its antistatic capability. The size of the green light-emitting element 402 can be greater than or equal to the size of the blue light-emitting element 403.

[0072] In one embodiment, referring to FIG1, the size of the green light-emitting element 402 is equal to the size of the blue light-emitting element 403. That is, the size of the green light-emitting element 402 and the size of the blue light-emitting element 403 are scaled up by the same ratio relative to the red light-emitting element 401. Furthermore, since the blue light-emitting element 403 has pad wiring on both sides, the pad wiring on both sides limits the increase in area of ​​the blue light-emitting element 403. In order to ensure the overall size of the light-emitting device, the position of the pad wiring is generally not changed, and the area of ​​the blue light-emitting element 403 is increased as much as possible. Therefore, in this case, the size of the green light-emitting element 402 is larger than the size of the blue light-emitting element 403, but the difference between the two sizes is not very large.

[0073] Each light-emitting element also includes a first electrode 410 and a second electrode 420. The semiconductor stacked layer of the light-emitting element has a mesa exposing the first semiconductor layer, the first electrode 410 is formed on the mesa and electrically connected to the first semiconductor layer, and the second electrode 420 is formed on the second semiconductor layer and electrically connected to the second semiconductor layer.

[0074] In one embodiment, referring to FIG1, a first electrode 410 and a second electrode 420 are sequentially disposed on a red light-emitting element 401 along the direction from the first side 01 to the third side 03; a first electrode 410 and a second electrode 420 are sequentially disposed on a green light-emitting element 402 along the direction from the first side 01 to the third side 03; and a second electrode 420 and a first electrode 410 are sequentially disposed on a blue light-emitting element 403 along the direction from the first side 01 to the third side 03. In this case, a connecting wire 550 sequentially connects the first electrode 410 of the red light-emitting element 401, the first electrode 410 of the green light-emitting element 402, and the first electrode 410 of the blue light-emitting element 403 along the direction from the second side 02 to the fourth side 04. Since the first electrode 410 and the second electrode 420 of the blue light-emitting element 403 are positioned opposite to the other two light-emitting elements, the connecting wire 550 has a corner when connecting the blue light-emitting element 403. Furthermore, in this embodiment, the first electrode 410 is a P electrode, and the second electrode 420 is an N electrode. Since there is a light-emitting area below the P electrode of the light-emitting diode, the entire blue light-emitting element 403 is shifted towards the first side 01. That is, normally the centers of the three light-emitting elements are aligned. In this embodiment, the center of the blue light-emitting element 403 is shifted relative to the center of the green light-emitting element 402 towards the first side 01. This makes the light-emitting area of ​​the blue light-emitting element 403 symmetrical, increases the distance between the electrode of the blue light-emitting element and the adjacent pad wiring, reduces the risk of short circuits, and achieves better light emission without changing the overall size of the light-emitting device, ensuring the yield of the light-emitting device. Optionally, along the direction from the first side 01 to the third side 03, each light-emitting element includes a first end and a second end. The distance D3 between the first end of the blue light-emitting element 403 and the first end of the green light-emitting element 402 is 0~20μm, and the distance D5 between the second end of the blue light-emitting element 403 and the second end of the green light-emitting element 402 is 0~20μm. The distance D4 between the edge of the electrode adjacent to the blue light-emitting element 403 and the third pad wiring 530 and the edge of the third pad wiring 530 is greater than 5μm along the direction from the first side 01 to the third side 03.

[0075] Optionally, referring to Figure 1, the absolute value of the difference between the distance D2 between the edge of the blue light-emitting element 403 and the fourth side O4 of the transparent layer 100 and the distance D1 between the edge of the red light-emitting element 401 and the second side O2 of the transparent layer 100 is less than 20 μm. This can prevent color difference and ensure good light emission effect. Optionally, D1 can be equal to D2, and D1 and D2 are between 15 and 50 μm.

[0076] In another embodiment, referring to FIG2, the red light-emitting element 401 has a first electrode 410 and a second electrode 420 arranged sequentially along the direction from the first side 01 to the third side 03; the green light-emitting element 402 has a first electrode 410 and a second electrode 420 arranged sequentially along the direction from the first side 01 to the third side 03; and the blue light-emitting element 403 has a first electrode 410 and a second electrode 420 arranged sequentially along the direction from the first side 01 to the third side 03. In this case, the connecting wiring 550 sequentially connects the first electrode 410 of the red light-emitting element 401, the first electrode 410 of the green light-emitting element 402, and the first electrode 410 of the blue light-emitting element 403 along the direction from the second side 02 to the fourth side 04. Since the arrangement direction of the first electrode 410 and the second electrode 420 of each light-emitting element is the same, the connecting wiring 550 does not have any corners.

[0077] In this embodiment, referring to FIG1, the red light-emitting element 401, the green light-emitting element 402, and the blue light-emitting element 403 are arranged sequentially along the direction from the second side 02 to the fourth side 04 of the transparent layer 100. In other embodiments, the light-emitting elements can be disposed at any position on the transparent layer 100, and the present invention does not limit the position of the light-emitting elements on the transparent layer 100. Example 2

[0078] This embodiment provides a display device. Referring to FIG5, the display device includes a display substrate 002 and at least one light-emitting device 001 formed on the display substrate 002. The light-emitting device can be electrically connected to the display substrate 002 by fixing the wiring layer to the wiring layer with solder paste or the like, or a protective electrode can be formed on the wiring layer and then the protective electrode can be electrically connected to the display substrate 002 by fixing the protective electrode to the display substrate 002 with solder paste or the like. The light-emitting device is the same as that in Embodiment 1 described above, and similarly possesses the aforementioned technical effects.

[0079] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A light-emitting device, characterized in that, include: A transparent layer includes a first side, a second side, a third side, and a fourth side connected in sequence, wherein the fourth side is connected to the first side; The three light-emitting elements are sequentially arranged along the direction from the second side to the fourth side, including a first light-emitting element, a second light-emitting element, and a third light-emitting element, wherein at least one light-emitting element has a smaller size than any of the other light-emitting elements; A wiring layer is disposed above the three light-emitting elements, and the wiring layer is electrically connected to each of the light-emitting elements; An insulating layer is disposed on a portion of the wiring layer.

2. The light-emitting device according to claim 1, characterized in that, The first light-emitting element is a red light-emitting element, the second light-emitting element is a green light-emitting element, and the third light-emitting element is a blue light-emitting element.

3. The light-emitting device according to claim 2, characterized in that, The size of the red light-emitting element is smaller than the size of the green light-emitting element, and the size of the red light-emitting element is smaller than the size of the blue light-emitting element.

4. The light-emitting device according to claim 3, characterized in that, The size of the green light-emitting element is equal to the size of the blue light-emitting element.

5. The light-emitting device according to claim 3, characterized in that, The wiring layer includes pad wiring, which includes a first pad wiring, a second pad wiring, a third pad wiring, and a fourth pad wiring. The first pad wiring and the second pad wiring are disposed on both sides of the red light-emitting element, and the third pad wiring and the fourth pad wiring are disposed on both sides of the blue light-emitting element.

6. The light-emitting device according to claim 5, characterized in that, The size of the green light-emitting element is larger than the size of the blue light-emitting element.

7. The light-emitting device according to claim 5, characterized in that, The red light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side; the green light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side; and the blue light-emitting element has a second electrode and a first electrode arranged sequentially along the direction from the first side to the third side.

8. The light-emitting device according to claim 5, characterized in that, The red light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side; the green light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side; and the blue light-emitting element has a first electrode and a second electrode arranged sequentially along the direction from the first side to the third side.

9. The light-emitting device according to claim 7, characterized in that, The first electrode is a P electrode, and the second electrode is an N electrode.

10. The light-emitting device according to claim 5 or 8, characterized in that, The center of the red light-emitting element is aligned with the center of the green light-emitting element, and the center of the blue light-emitting element is offset relative to the center of the green light-emitting element in the direction of the first side.

11. The light-emitting device according to claim 5 or 8, characterized in that, Along the direction from the first side to the third side, each of the light-emitting elements includes a first end and a second end. The distance D3 between the first end of the blue light-emitting element and the first end of the green light-emitting element is 0~20μm, and the distance D5 between the second end of the blue light-emitting element and the second end of the green light-emitting element is 0~20μm.

12. The light-emitting device according to claim 7 or 8, characterized in that, The wiring layer further includes connection wiring, wherein the first pad wiring is connected to the first electrode of the red light-emitting element, the first electrode of the green light-emitting element and the first electrode of the blue light-emitting element through the connection wiring; the second pad wiring is connected to the second electrode of the red light-emitting element through the connection wiring; the third pad wiring is connected to the second electrode of the green light-emitting element through the connection wiring; and the fourth pad wiring is connected to the second electrode of the blue light-emitting element through the connection wiring.

13. The light-emitting device according to claim 9, characterized in that, The distance D4 between the edge of the electrode adjacent to the third pad wiring and the edge of the blue light-emitting element and the third pad wiring in the direction from the first side to the third side is greater than 5 μm.

14. The light-emitting device according to claim 3, characterized in that, The absolute value of the difference between the distance D2 between the edge of the blue light-emitting element and the fourth side of the transparent layer and the distance D1 between the edge of the red light-emitting element and the second side of the transparent layer is less than 20 μm.

15. The light-emitting device according to claim 2, characterized in that, The red light-emitting element, the green light-emitting element, and the blue light-emitting element are arranged sequentially along the direction from the second side to the fourth side of the transparent layer.

16. The light-emitting device according to claim 2, characterized in that, The light-emitting device further includes: A filling layer, which is filled between adjacent light-emitting elements, contains a black filler component, which includes at least one of carbon black, titanium nitride, iron oxide, iron(II,III) oxide, or iron powder.

17. The light-emitting device according to claim 16, characterized in that, The wiring layer includes: The first layer is attached to the light-emitting element and the filling layer, and forms an electrical connection with the light-emitting element; The second layer has one side electrically connected to the first layer.

18. The light-emitting device according to claim 1, characterized in that, The light-emitting device further includes: An adhesive layer is disposed above the transparent layer, and the three light-emitting elements are disposed at intervals on the adhesive layer; Multiple protective electrodes are formed at intervals on the wiring layer and are electrically connected to the wiring layer.

19. A display device, characterized in that, include: Display substrate; At least one light-emitting device is disposed on the surface of the display substrate, the light-emitting device is electrically connected to the display substrate, and the light-emitting device is the light-emitting device according to any one of claims 1 to 18.

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