Light-emitting diode (LED) device with adjustable light-emitting angle and light-emitting module

Abstract

The utility model provides an LED device with an adjustable light emitting angle and a light emitting module, the LED device comprises a carrier plate, an LED chip, an electrochromic layer and a driving element, the LED chip is arranged on the carrier plate, and the LED chip comprises a light emitting surface arranged on the side, away from the carrier plate, of the LED chip and at least one light emitting side face arranged between the light emitting surface and the carrier plate; the electrochromic layer is arranged on the periphery of the LED chip so as to surround all the light-emitting side faces. The driving element is electrically connected with the LED chip through the carrier plate, and the driving element is further electrically connected with the electrochromic layer through the carrier plate so as to control the electrochromic layer to be switched between the transparent state and the shading state. In the LED device provided by the invention, the electrochromic layer can be switched between the transparent state and the shading state under the driving of the driving element, so that the light emitting range of the LED device is changed, and the light emitting angle is adjustable.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of semiconductor technology, in particular to a light-emitting diode (LED) device with adjustable light-emitting angle and a light-emitting module. BACKGROUND

[0002] A light-emitting diode (LED) is a kind of electroluminescent semiconductor light-emitting device. At present, it has been widely applied in the fields of lighting, display, medical treatment, optical communication and the like due to its advantages of low energy consumption, small size, long service life, good stability, fast response and stable light-emitting wavelength.

[0003] Taking a car headlamp as an example, the current car headlamp includes a low-beam lamp group and a high-beam lamp group. According to the use requirement, the light-emitting angle of the LED lamp in the low-beam lamp group needs to be different from that of the LED lamp in the high-beam lamp group. The current design scheme is that the LED array in the low-beam lamp group and the LED array in the high-beam lamp group are independently arranged in respective regions and different LED device structures are adopted. However, the total arrangement region of the car headlamp is relatively limited, which makes the arrangement region of the LED array in the low-beam lamp group and the arrangement region of the LED array in the high-beam lamp group relatively small, and further leads to a relatively small number of the LED array in the low-beam lamp group and the LED array in the high-beam lamp group, and further leads to a relatively low brightness of the low-beam lamp group and the high-beam lamp group. In order to improve the light-emitting brightness of the low-beam lamp group and the high-beam lamp group, a higher-power LED device needs to be selected, which further limits the selection of the chip type of the LED device and greatly improves the quality requirement of the stability of the LED device.

[0004] Therefore, how to meet the design requirement of different light-emitting angles of the LED device in the low-beam lamp group and the high-beam lamp group and effectively increase the number of the LED array in the low-beam lamp group and the high-beam lamp group to improve the brightness of the low-beam lamp group and the high-beam lamp group in the limited arrangement region of the headlamp is a technical problem to be solved by those skilled in the art. CONTENT OF THE INVENTION

[0005] The present application provides a LED device with adjustable light-emitting angle and a light-emitting module, which can effectively solve the technical problem of a relatively small number of LED arrays in the low-beam lamp group and the high-beam lamp group and a relatively low brightness in the related art due to the need to meet the design requirement of different light-emitting angles of the LED device in the low-beam lamp group and the high-beam lamp group.

[0006] In a first aspect, the present application provides a LED device with adjustable light-emitting angle, which comprises:

[0007] a carrier plate;

[0008] an LED chip disposed on the carrier plate, the LED chip comprising a light-out surface disposed on a side of the LED chip facing away from the carrier plate and at least one light-out side surface disposed between the light-out surface and the carrier plate;

[0009] an electrochromic layer disposed on a periphery of the LED chip to surround all the light-out side surfaces;

[0010] a driving element electrically connected to the LED chip through the carrier plate and electrically connected to the electrochromic layer through the carrier plate to control the electrochromic layer to switch between a transparent state and a light-shielding state.

[0011] Optionally, the carrier plate comprises two first pads and two second pads, the LED chip is electrically connected to the two first pads, and the electrochromic layer is electrically connected to the two second pads.

[0012] Optionally, the LED chip is a flip-chip LED chip, and the LED chip comprises four light-out side surfaces.

[0013] Optionally, the height of the electrochromic layer is greater than or equal to the height of the light-out surface of the LED chip.

[0014] Optionally, the electrochromic layer is in contact with the light-out side surfaces of the LED chip, and the height of the electrochromic layer is the same as the height of the light-out surface of the LED chip.

[0015] The LED device further comprises a color conversion layer, and the color conversion layer covers the electrochromic layer and the LED chip.

[0016] Optionally, the electrochromic layer is in contact with the light-out side surfaces of the LED chip, and the height of the electrochromic layer is greater than the height of the light-out surface of the LED chip.

[0017] The LED device further comprises a color conversion layer, and the color conversion layer covers the electrochromic layer and the LED chip.

[0018] Optionally, the LED device further comprises a color conversion layer, the height of the electrochromic layer is greater than the height of the light-out surface of the LED chip, the electrochromic layer surrounds the color conversion layer, and the electrochromic layer is in contact with the side wall of the color conversion layer.

[0019] Optionally, the LED device further comprises a reflective dam, the reflective dam is disposed on a periphery of the electrochromic layer to surround the electrochromic layer, and the inner diameter of the reflective dam gradually increases in a direction of the carrier plate facing the LED chip.

[0020] Optionally, the LED device further comprises a circuit board, the circuit board is provided with at least one driving element, a plurality of carrier boards and a plurality of LED chips, each carrier board is provided with one LED chip, and the periphery of each LED chip is provided with an electrochromic layer.

[0021] Each driving element is electrically connected with the plurality of carrier boards to control the light-emitting state of the plurality of LED chips and the transparent state of the electrochromic layer in the periphery of the plurality of LED chips.

[0022] In a second aspect, the present application provides a light-emitting module, which comprises the LED device described in any one of the above aspects.

[0023] The present application provides a light-emitting module and a light-emitting device with adjustable light-emitting angle. The light-emitting device comprises a carrier board, an LED chip, an electrochromic layer and a driving element. The LED chip is arranged on the carrier board. The LED chip comprises a light-emitting surface arranged on a side of the LED chip away from the carrier board and at least one light-emitting side surface arranged between the light-emitting surface and the carrier board. The electrochromic layer is arranged at the periphery of the LED chip to surround all the light-emitting side surfaces. The driving element is electrically connected with the LED chip through the carrier board, and the driving element is also electrically connected with the electrochromic layer through the carrier board to control the electrochromic layer to switch between the transparent state and the light-shielding state. In the light-emitting device provided by the present application, the electrochromic layer can be switched between the transparent state and the light-shielding state under the driving of the driving element, thereby changing the light-emitting range of the light-emitting device and realizing the adjustable light-emitting angle. BRIEF DESCRIPTION OF DRAWINGS

[0024] The technical solutions and other beneficial effects of the present application will become apparent from the following detailed description of the specific embodiments of the present application, combined with the accompanying drawings.

[0025] Figure 1 The cross-sectional schematic diagram of a first light-emitting device with adjustable light-emitting angle provided by some embodiments of the present application is shown.

[0026] Figure 2 The cross-sectional schematic diagram of a second light-emitting device with adjustable light-emitting angle provided by some embodiments of the present application is shown.

[0027] Figure 3 The cross-sectional schematic diagram of a third light-emitting device with adjustable light-emitting angle provided by some embodiments of the present application is shown.

[0028] Figure 4 The cross-sectional schematic diagram of a fourth light-emitting device with adjustable light-emitting angle provided by some embodiments of the present application is shown.

[0029] Figure 5 A cross-sectional schematic view of a fifth light-emitting angle adjustable LED device provided by some embodiments of the present application.

[0030] Explanation of reference signs:

[0031] Carrier plate 10; first pad 11; second pad 12; LED chip 20; electrochromic layer 30; driving element 40; color conversion layer 50; circuit board 60; reflective dam 70; transparent silicone layer 80. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0033] The terms "first", "second" in the specification are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0034] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection or can communicate with each other; it can be directly connected, or indirectly connected through intermediate medium, or the communication between two elements or the interaction between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0035] The following disclosure provides many different embodiments or examples for implementing different structures of the present application. In order to simplify the disclosure of the present application, the components and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present application. In addition, the present application can repeatedly refer to numbers and / or letters in different examples. Such repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0036] Figure 1 A cross-sectional schematic view of a first light-emitting angle adjustable LED device provided by some embodiments of the present application;Figure 2 A cross-sectional schematic diagram of a second type of LED device with adjustable light emission angle provided in some embodiments of this application; Figure 3 A cross-sectional schematic diagram of a third type of LED device with adjustable light emission angle provided in some embodiments of this application; Figure 4 A cross-sectional schematic diagram of a fourth type of LED device with adjustable light emission angle provided in some embodiments of this application; Figure 5 This is a cross-sectional schematic diagram of a fifth type of LED device with adjustable light emission angle provided in some embodiments of this application. (Refer to...) Figures 1 to 5 As shown, in a first aspect, embodiments of this application provide an LED device with an adjustable light emission angle. The LED device includes a carrier plate 10, an LED chip 20, an electrochromic layer 30, and a driving element 40. The LED chip 20 is disposed on the carrier plate 10 and includes a light-emitting surface disposed on the side of the LED chip 20 facing away from the carrier plate 10 and at least one light-emitting side surface disposed between the light-emitting surface and the carrier plate 10. The electrochromic layer 30 is disposed around the periphery of the LED chip 20 to surround all the light-emitting side surfaces. The driving element 40 is electrically connected to the LED chip 20 through the carrier plate 10, and the driving element 40 is also electrically connected to the electrochromic layer 30 through the carrier plate 10 to control the electrochromic layer 30 to switch between a transparent state and a light-blocking state.

[0037] In the LED device with adjustable light-emitting angle provided by the embodiments of the present application, the driving element 40 is electrically connected to the LED chip 20 and the electrochromic layer 30 through the carrier plate 10, so that the driving element 40 can directly control the light-emitting state of the LED chip 20 and the transparent state of the electrochromic layer 30, and the LED device has a first state and a second state with different light-emitting angles. For example, the driving element 40 controls the LED chip 20 to keep the light-emitting state and controls the electrochromic layer 30 to keep the transparent state. At this time, the electrochromic layer 30 arranged at the periphery of the LED chip 20 is in the transparent state, so that the large-angle light emitted by the LED chip 20 is not blocked by the electrochromic layer 30, and the LED device has a first state with a light-emitting angle of a. For another example, the driving element 40 controls the LED chip 20 to keep the light-emitting state and controls the electrochromic layer 30 to keep the light-shielding state. At this time, the electrochromic layer 30 arranged at the periphery of the LED chip 20 is in the light-shielding state, so that the large-angle light emitted by the LED chip 20 is blocked, absorbed or reflected by the electrochromic layer 30, and the LED device has a second state with a light-emitting angle of b, and b is less than a. It should be noted that the present application does not limit the specific range of the large-angle light, and the angle between the large-angle light and the normal line perpendicular to the light-emitting surface is greater than 0° and less than 90°.

[0038] In addition, the present application adjusts the light-emitting angle by switching the state of the electrochromic layer 30 arranged at the periphery of the LED chip 20, which can arrange more LED chips 20 in a unit area compared with the related art which needs to arrange two different LED device structures, and thus greatly improves the brightness level of the LED device without changing the power of the LED chip 20.

[0039] In some embodiments of the present application, the carrier plate 10 includes a substrate and a metal layer, and the substrate can be ceramic or other insulating materials.

[0040] In some embodiments of the present application, the electrochromic layer 30 has a transparent state before the driving element 40 applies voltage thereto, and has a specific color after the driving element 40 applies voltage thereto, or the electrochromic layer 30 has a specific color before the driving element 40 applies voltage thereto, and has a transparent state after the driving element 40 applies voltage thereto.

[0041] In some embodiments of the present application, the electrochromic layer 30 comprises an electrochromic material that can reversibly change color by a redox reaction caused by voltage, which can not only control color by voltage, but also control transmittance by voltage to ensure visualization. For example, the electrochromic material can include a reduction colorant material containing inorganic metal oxides (for example, titanium dioxide, tungsten trioxide, niobium pentoxide) and organic polymer materials (for example, polyaniline, polythiophene, polybiotin or polypyrrole), and an oxidation colorant material (for example, iridium oxide).

[0042] In some embodiments of the present application, the carrier plate 10 comprises two first pads 11 and two second pads 12, the LED chip 20 is electrically connected with the two first pads 11, and the electrochromic layer 30 is electrically connected with the two second pads 12.

[0043] The LED device with adjustable light-emitting angle provided by the embodiments of the present application can integrate two different driving signal input / output ports on the carrier plate 10 under the condition of fully utilizing the space on the carrier plate 10, so as to realize independent control of the LED chip 20 and the electrochromic layer 30 by the driving element 40, and facilitate reduction of the number of driving elements 40 and reduction of the cost of the LED device.

[0044] In some embodiments of the present application, the LED chip 20 is a flip-chip LED chip, and the LED chip 20 comprises four light-emitting sides.

[0045] The flip-chip LED chip is less suitable for high-power application scenarios compared with the vertical LED chip, and on this technical background, the present application can fully utilize the light-emitting characteristics of the five-sided light-emitting of the flip-chip LED chip, and effectively break through the limitation of the vertical LED chip for high-brightness LED devices by introducing the electrochromic layer 30, so that the LED device can meet the use requirements of adjustable light-emitting angle and super high brightness at the same time.

[0046] In some embodiments of the present application, the height of the electrochromic layer 30 is greater than or equal to the height of the light-emitting surface of the LED chip 20.

[0047] In the LED device with adjustable light-emitting angle provided by the embodiments of the present application, the height of the electrochromic layer 30 is greater than or equal to the height of the light-emitting surface of the LED chip 20, so as to improve the light pattern narrowing effect of the occlusion state electrochromic layer 30 on the outgoing light of the LED chip 20.

[0048] In some embodiments of the present application, referring to Figure 1 The electrochromic layer 30 is attached to the light-emitting side of the LED chip 20, and the height of the electrochromic layer 30 is the same as the height of the light-emitting surface of the LED chip 20; wherein the LED device further comprises a color conversion layer 50, and the color conversion layer 50 covers the electrochromic layer 30 and the LED chip 20.

[0049] In the LED device with adjustable light-emitting angle provided by the embodiments of the present application, since the electrochromic layer 30 is attached to the light-emitting side of the LED chip 20, the light type narrowing effect of the light-emitting light of the LED chip 20 by the electrochromic layer 30 in the light-shielding state can be improved. In addition, since the height of the electrochromic layer 30 is the same as the height of the light-emitting surface of the LED chip 20, the electrochromic layer 30 can better take the light-emitting side of the LED chip 20 as a bearing surface, and the structural stability of the electrochromic layer 30 can be improved. Moreover, since the color conversion layer 50 covers the electrochromic layer 30 and the LED chip 20, the light-emitting light of the LED chip 20 needs to pass through the color conversion layer 50 to be emitted, whether the electrochromic layer 30 is in the light-shielding state or the transparent state, thereby facilitating the improvement of the color accuracy of the LED device. Exemplarily, the LED chip 20 is a blue light LED chip.

[0050] In some embodiments of the present application, referring to Figure 2 The electrochromic layer 30 is attached to the light-emitting side of the LED chip 20, and the height of the electrochromic layer 30 is greater than the height of the light-emitting surface of the LED chip 20; wherein the LED device further comprises a color conversion layer 50, and the color conversion layer 50 covers the electrochromic layer 30 and the LED chip 20.

[0051] In the LED device with adjustable light-emitting angle provided by the embodiments of the present application, since the electrochromic layer 30 is attached to the light-emitting side of the LED chip 20, and the height of the electrochromic layer 30 is greater than the height of the light-emitting surface of the LED chip 20, the light type narrowing effect of the light-emitting light of the LED chip 20 by the electrochromic layer 30 in the light-shielding state can be greatly improved. In addition, since the color conversion layer 50 covers the electrochromic layer 30 and the LED chip 20, the light-emitting light of the LED chip 20 needs to pass through the color conversion layer 50 to be emitted, whether the electrochromic layer 30 is in the light-shielding state or the transparent state, thereby facilitating the improvement of the color accuracy of the LED device.

[0052] In some embodiments of the present application, referring to Figure 3The LED device further comprises a color conversion layer 50, the color conversion layer 50 covers the LED chip 20, the height of the electrochromic layer 30 is greater than the height of the light emitting surface of the LED chip 20, the electrochromic layer 30 surrounds the color conversion layer 50 and is attached to the side wall of the color conversion layer 50.

[0053] In the LED device with adjustable light emitting angle provided by the embodiment of the present application, since the color conversion layer 50 covers the LED chip 20, the light emitted by the LED chip 20 needs to pass through the color conversion layer 50 before being emitted, thereby facilitating the improvement of the color accuracy of the LED device. In addition, since the height of the electrochromic layer 30 is greater than the height of the light emitting surface of the LED chip 20, the light type narrowing effect of the electrochromic layer 30 in the light shielding state on the light emitted by the LED chip 20 can be greatly improved. Moreover, since the electrochromic layer 30 surrounds the color conversion layer 50 and is attached to the side wall of the color conversion layer 50, the integration of the electrochromic layer 30 can be completed after the packaging process of the color conversion layer 50 on the LED chip 20, thereby reducing the integration difficulty of the electrochromic layer 30, simplifying the process and reducing the production cost.

[0054] In some embodiments of the present application, referring to Figure 4 The LED device further comprises a reflective dam 70, the reflective dam 70 is arranged at the periphery of the electrochromic layer 30 to surround the electrochromic layer 30, and the inner diameter of the reflective dam 70 gradually increases in the direction of the carrier board 10 towards the LED chip 20.

[0055] In the LED device with adjustable light emitting angle provided by the embodiment of the present application, the reflective dam 70 with gradually increasing inner diameter in the direction of the carrier board 10 towards the LED chip 20 is beneficial to the convergence of light and can simultaneously play a certain light type adjusting role, which is beneficial to the concentration of light emitted in the first state and improves the brightness per unit area.

[0056] In some embodiments of the present application, the reflective dam 70 can be a white silica gel layer.

[0057] In some embodiments of the present application, referring to Figure 4 The LED device further comprises a transparent silica gel layer 80, the transparent silica gel layer 80 fills the gap between the reflective dam 70 and the electrochromic layer 30.

[0058] In some embodiments of the present application, referring to Figures 1 to 5The LED device further comprises a circuit board 60, at least one driving element 40, a plurality of carrier boards 10 and a plurality of LED chips 20 are arranged on the circuit board 60, one LED chip 20 is arranged on each carrier board 10, and an electrochromic layer 30 is arranged on the periphery of each LED chip 20; wherein each driving element 40 is electrically connected with the plurality of carrier boards 10 to control the light-emitting state of the plurality of LED chips 20 and control the transparent state of the electrochromic layer 30 on the periphery of the plurality of LED chips 20.

[0059] In the LED device with adjustable light-emitting angle provided by the embodiments of the present application, one LED chip 20 is arranged on each carrier board 10, and an electrochromic layer 30 is arranged on the periphery of each LED chip 20, that is, a plurality of LED packages can be prepared separately, each LED package comprises one carrier board 10, one LED chip 20 arranged on the carrier board 10, and an electrochromic layer 30 arranged on the periphery of the LED chip 20, then the plurality of LED packages and at least one driving element 40 are integrated on the circuit board 60, thereby simplifying the preparation process and enabling one driving element 40 to control the light-emitting state of the plurality of LED chips 20 and control the transparent state of the electrochromic layer 30 on the periphery of the plurality of LED chips 20, thereby reducing the number of driving elements 40 and reducing material costs.

[0060] In a second aspect, the embodiments of the present application provide a light-emitting module, which comprises the LED device described in any one of the above. The application of the present application to the light-emitting module is not limited, and the light-emitting module can be a headlamp of a car, a lamp panel in a display device, a security lamp or a lamp for other purposes.

[0061] In summary, the present application provides an LED device with adjustable light-emitting angle and a light-emitting module, the LED device comprises a carrier board, an LED chip, an electrochromic layer and a driving element, wherein the LED chip is arranged on the carrier board, the LED chip comprises a light-emitting surface arranged on a side of the LED chip away from the carrier board and at least one light-emitting side surface arranged between the light-emitting surface and the carrier board; the electrochromic layer is arranged on the periphery of the LED chip to surround all the light-emitting side surfaces; the driving element is electrically connected with the LED chip through the carrier board, and the driving element is also electrically connected with the electrochromic layer through the carrier board to control the electrochromic layer to switch between the transparent state and the light-shielding state. In the LED device provided by the present application, the electrochromic layer can be switched between the transparent state and the light-shielding state under the driving of the driving element, thereby changing the light-emitting range of the LED device and realizing adjustable light-emitting angle.

[0062] The above has carried on the detailed introduction to the LED device and the light emitting module with adjustable light emitting angle provided by the embodiment of the application, the principle and the implementation mode of the application are described by applying specific examples in the paper, the above embodiment is only used for helping understanding the method of the application and its core idea; meanwhile, for the person skilled in the art, according to the idea of the application, the specific implementation mode and the application range will have the change, and the above is described, the content of the specification should not be understood as the limitation of the application.

Claims

1. An LED device, characterized by, The LED device comprises: a carrier plate; an LED chip disposed on the carrier plate, the LED chip comprising a light-out surface disposed on a side of the LED chip facing away from the carrier plate and at least one light-out side surface disposed between the light-out surface and the carrier plate; an electrochromic layer disposed on a periphery of the LED chip to surround all the light-out side surfaces; a driving element electrically connected to the LED chip through the carrier plate and electrically connected to the electrochromic layer through the carrier plate to control the electrochromic layer to switch between a transparent state and a light-shielding state.

2. The LED device of claim 1, wherein, The carrier plate comprises two first pads and two second pads, the LED chip is electrically connected to the two first pads, and the electrochromic layer is electrically connected to the two second pads.

3. The LED device of claim 1, wherein, The LED chip is a flip-chip LED chip, and the LED chip comprises four light-out side surfaces.

4. The LED device of claim 1, wherein, The height of the electrochromic layer is greater than or equal to the height of the light-out surface of the LED chip.

5. The LED device of claim 1, wherein, The electrochromic layer is in contact with the light-out side surface of the LED chip, and the height of the electrochromic layer is the same as the height of the light-out surface of the LED chip. The LED device further comprises a color conversion layer, and the color conversion layer covers the electrochromic layer and the LED chip.

6. The LED device of claim 1, wherein, The electrochromic layer is in contact with the light-out side surface of the LED chip, and the height of the electrochromic layer is greater than the height of the light-out surface of the LED chip. The LED device further comprises a color conversion layer, and the color conversion layer covers the electrochromic layer and the LED chip.

7. The LED device of claim 1, wherein, The LED device further comprises a color conversion layer, and the color conversion layer covers the LED chip, the height of the electrochromic layer is greater than the height of the light-out surface of the LED chip, the electrochromic layer surrounds the color conversion layer and is in contact with the side wall of the color conversion layer.

8. The LED device of claim 7, wherein, The LED device further comprises a reflective dam, the reflective dam is disposed on a periphery of the electrochromic layer to surround the electrochromic layer, and the inner diameter of the reflective dam gradually increases in a direction of the carrier plate facing the LED chip.

9. The LED device according to any one of claims 1 to 8, characterized in that The LED device further comprises a circuit board, the circuit board is provided with at least one driving element, a plurality of carrier plates and a plurality of LED chips, one LED chip is disposed on each carrier plate, and an electrochromic layer is disposed on a periphery of each LED chip. Each driving element is electrically connected to a plurality of carrier plates to control the light-emitting state of a plurality of LED chips and the transparent state of the electrochromic layer on the periphery of a plurality of LED chips.

10. A light emitting module, characterized by The light-emitting module comprises the LED device according to any one of claims 1 to 9.

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