Light emitting module

Abstract

A light-emitting module has a small volume and a good light-emitting effect, and comprises a substrate, a light-emitting component, a first light-transmitting layer, a first reflecting layer, a second light-transmitting layer, a second reflecting layer, a spacer layer and a protective layer. The substrate has a bottom side and a top side opposite to each other. The substrate includes a through hole. The light-emitting assembly is arranged on the bottom side of the substrate and used for providing the illumination light beam to pass through the through hole of the substrate. The first light-transmitting layer is disposed on the top side of the substrate. The first reflecting layer is formed on the surface of the first light-transmitting layer. The first reflecting layer comprises a light inlet hole used for allowing the illumination light beam to pass through. The second light-transmitting layer is disposed on the first light-transmitting layer. The first light-transmitting layer is located between the substrate and the second light-transmitting layer. The second reflecting layer is formed on the surface of the second light-transmitting layer. The second reflective layer includes a light-transmitting pattern for passing the illumination beam. The spacer layer is disposed between the first light-transmitting layer and the second light-transmitting layer. The protective layer is disposed on the second reflective layer, wherein the thickness of the first light-transmitting layer is smaller than that of the second light-transmitting layer.

Description

Technical Field

[0001] The utility model relates to a light emitting device, and in particular to a light emitting module. Background Art

[0002] Laptops are an important tool for modern people in life and work. To improve the operating experience, laptops that integrate lighting effects into the case, keyboard or buttons have been proposed to give users a different visual experience. However, in the current design, the use of light modules will increase the overall volume of the functional structure, which in turn affects the configuration of other components in the laptop.

[0003] In detail, traditionally, side-entry light modules are often used to improve the light-guiding effect in the horizontal direction. However, this configuration not only requires a larger light guide plate and increases the manufacturing cost, but also increases the volume of the light module in the horizontal direction by placing the light-emitting components on the side. Utility Model Content

[0004] The utility model provides a light-emitting module, comprising a substrate, a light-emitting component, a first light-transmitting layer, a first reflective layer, a second light-transmitting layer, a second reflective layer, a spacer layer and a protective layer. The substrate has a bottom side and a top side opposite to each other. The substrate comprises a through hole. The light-emitting component is arranged on the bottom side of the substrate to provide an illumination light beam to pass through the through hole of the substrate. The first light-transmitting layer is arranged on the top side of the substrate. The first reflective layer is formed on the surface of the first light-transmitting layer. The first reflective layer comprises a light-entry hole to allow the illumination light beam to pass through. The second light-transmitting layer is arranged on the first light-transmitting layer. The first light-transmitting layer is located between the substrate and the second light-transmitting layer. The second reflective layer is formed on the surface of the second light-transmitting layer. The second reflective layer comprises a light-transmitting pattern to allow the illumination light beam to pass through. The spacer layer is arranged between the first light-transmitting layer and the second light-transmitting layer. The protective layer is arranged on the second reflective layer. The second reflective layer is located between the first reflective layer and the protective layer, wherein the thickness of the first light-transmitting layer is less than the thickness of the second light-transmitting layer.

[0005] In an embodiment of the present invention, the first reflective layer is located between the substrate and the first light-transmitting layer.

[0006] In an embodiment of the present invention, the second reflective layer is located between the second light-transmitting layer and the protective layer.

[0007] In an embodiment of the present invention, the light incident hole and the light-transmitting pattern do not overlap in a structural stacking direction of the light-emitting module.

[0008] In an embodiment of the present invention, the distance from the center position of the orthographic projection of the light-emitting component on the second reflective layer to the light-transmitting pattern is between 3 mm and 6 mm.

[0009] In an embodiment of the present invention, the spacing layer is an air layer, and the first light-transmitting layer and the second light-transmitting layer are not connected on the transmission path of the illumination light beam.

[0010] In an embodiment of the present invention, the spacer layer is a light-transmitting connecting layer, and the refractive index of the light-transmitting connecting layer is smaller than the refractive index of the first light-transmitting layer and the refractive index of the second light-transmitting layer.

[0011] In an embodiment of the present invention, the distance from the light emitting surface of the light emitting component to the light emitting surface of the light emitting module is less than or equal to 0.2 mm.

[0012] Based on the above, in the light-emitting module of the utility model, the light-emitting module includes a substrate, a light-emitting component, a first light-transmitting layer, a first reflective layer, a second light-transmitting layer, a second reflective layer, a spacer layer and a protective layer. When the light-emitting component provides an illumination beam, the illumination beam is transmitted through the through hole of the substrate and the light entrance hole of the first reflective layer to enter the first light-transmitting layer, and then through the reflection effect of the first reflective layer and the second reflective layer, it is transmitted between the first light-transmitting layer, the spacer layer and the second light-transmitting layer, and is transmitted in the horizontal direction at the same time. Finally, the illumination beam is transmitted through the protective layer by the light-transmitting pattern of the second reflective layer, and is emitted from the light-emitting surface of the light-emitting module, so that the human eye can observe the light-transmitting pattern. In this way, the light-emitting module can have a smaller volume and a good lighting effect.

[0013] In order to make the above features and advantages of the present invention more obvious and easy to understand, embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of a light emitting module according to an embodiment of the present utility model;

[0015] Figure 2 yes Figure 1 A cross-sectional schematic diagram of a light emitting module;

[0016] Figure 3 yes Figure 1 A three-dimensional exploded schematic diagram of the light-emitting module.

[0017] Description of reference numerals:

[0018] 100: light emitting module;

[0019] 110: substrate;

[0020] 112: through hole;

[0021] 120: light emitting component;

[0022] 130: first light-transmitting layer;

[0023] 140: first reflective layer;

[0024] 142: light entrance hole;

[0025] 150: second light-transmitting layer;

[0026] 160: second reflective layer;

[0027] 162: light-transmitting pattern;

[0028] 170: spacer layer;

[0029] 180: protective layer;

[0030] A1: bottom side;

[0031] A2: apical;

[0032] D1, D2: distance;

[0033] L: Illumination beam. DETAILED DESCRIPTION

[0034] The following will be described in detail with reference to the accompanying drawings for the embodiments of the present utility model. It will be understood that the drawings are for description and explanation purposes, not for limitation purposes. For the sake of clarity, the components may not be shown in actual proportion. In addition, some components and / or component symbols may be omitted in some drawings. In the specification and drawings, the same or similar component symbols are used to indicate the same or similar components. When a component is described as "disposed on", "connected"... another component, the component may be "directly disposed on", "directly connected"... another component, or there may be an intermediary component, unless otherwise specified. It can be expected that the elements and features in one embodiment can be incorporated into another embodiment and bring benefits, where feasible, without further elaboration.

[0035] Figure 1 FIG. 1 is a schematic diagram of a light emitting module according to an embodiment of the present invention. Figure 2 for Figure 1 A cross-sectional schematic diagram of a light emitting module. Figure 3 for Figure 1 3D exploded diagram of the light module. Please refer to Figures 1 to 3 The present embodiment provides a light emitting module 100 for being disposed on a housing of an electronic device, such as a housing of a notebook computer, and used as a light emitting indicator light or a key indicator light, but the present invention is not limited thereto.

[0036] The light emitting module 100 includes a substrate 110, a light emitting component 120, a first light-transmitting layer 130, a first reflective layer 140, a second light-transmitting layer 150, a second reflective layer 160, a spacer layer 170, and a protective layer 180. The substrate 110 has a bottom side A1 and a top side A2 relative to each other. The substrate 110 is, for example, a printed circuit board (PCB), a flexible printed circuit board (FPCB), a glass substrate with circuits, or a ceramic substrate with circuits, but is not limited thereto. The substrate 110 includes a through hole 112. In Figure 2 In the figure, the through hole 112 is shown to be located at the center of the substrate 110 , but the present invention does not limit the location of the through hole 112 on the substrate 110 .

[0037] The light emitting component 120 is disposed on the bottom side A1 of the substrate 110 to provide an illumination light beam L to be transmitted through the through hole 112 of the substrate 110. The light emitting component 120 is, for example, a single-color or multi-color light emitting diode (LED). Specifically, the light emitting surface of the light emitting component 120 overlaps with the through hole 112 of the substrate 110 in the structural stacking direction of the light emitting module 100. For example, in the present embodiment, the light emitting portion of the light emitting component 120 can be directly disposed in the through hole 112 of the substrate 110, but the present invention is not limited thereto. Since the light emitting component 120 is disposed on the bottom side A1 of the substrate 110, the lateral volume of the light emitting module 100 can be reduced.

[0038] The first light-transmitting layer 130 is disposed on the top side A2 of the substrate 110 to allow the illumination light beam L to pass through. The first light-transmitting layer 130 is, for example, polyethylene terephthalate (PET). The first reflective layer 140 is formed on the surface of the first light-transmitting layer 130. Specifically, the first reflective layer 140 is formed on the bottom surface of the first light-transmitting layer 130. That is, the first reflective layer 140 is located between the substrate 110 and the first light-transmitting layer 130. The first reflective layer 140 includes a light entrance hole 142 to allow the illumination light beam L to pass through. For example, the first reflective layer 140 is, for example, formed on the surface of the first light-transmitting layer 130 by printing, and the light entrance hole 142 is a pattern formed by an area without material. In the present embodiment, the light entrance hole 142 is a geometric pattern overlapping the through hole 112 of the substrate 110, but the present invention is not limited thereto. It is worth mentioning that the material of the first reflective layer 140 is non-metallic so as to maintain the electrical effect of the light emitting module 100 unaffected.

[0039] The second light-transmitting layer 150 is disposed on the first light-transmitting layer 130, and the first light-transmitting layer 130 is located between the substrate 110 and the second light-transmitting layer 150. The second light-transmitting layer 150 is used to allow the illumination light beam L to pass through. In the present embodiment, the material of the second light-transmitting layer 150 is the same as that of the first light-transmitting layer 130, that is, similar to the first light-transmitting layer 130, for example, polyethylene terephthalate (PET). In the present embodiment, the thickness of the first light-transmitting layer 130 is less than the thickness of the second light-transmitting layer 150. The second reflective layer 160 is formed on the surface of the second light-transmitting layer 150. Specifically, the second reflective layer 160 is formed on the top side surface of the second light-transmitting layer 150. That is, the second reflective layer 160 is located between the second light-transmitting layer 150 and the protective layer 180. The second reflective layer 160 includes a light-transmitting pattern 162 for allowing the illumination light beam L to pass through. In the present embodiment, the second reflective layer 160 is formed on the second light-transmitting layer 150 in a manner similar to the manner in which the first reflective layer 140 is formed on the first light-transmitting layer 130, for example, it is formed on the surface of the second light-transmitting layer 150 by printing, and the light-transmitting pattern 162 is a pattern formed by an area without material. Similar to the first reflective layer 140, the material of the second reflective layer 160 is also selected to be non-metallic to maintain the electrical effect of the light-emitting module 100 unaffected. In other words, both the first reflective layer 140 and the second reflective layer 160 only have non-metallic materials. The shape of the light-transmitting pattern 162 is different from that of the light-entering hole 142. For example, in the present embodiment, the light-transmitting pattern 162 is, for example, a ring-shaped pattern that does not overlap the through hole 112 of the substrate 110, but the present invention is not limited thereto. In other words, the light-entering hole 142 and the light-transmitting pattern 162 do not overlap in the structural stacking direction of the light-emitting module 100.

[0040] The spacer layer 170 is disposed between the first light-transmitting layer 130 and the second light-transmitting layer 150. In one embodiment, the spacer layer 170 is, for example, an air layer, and the first light-transmitting layer 130 and the second light-transmitting layer 150 are not connected in the transmission path of the illumination light beam L. In another embodiment, the spacer layer 170 is a light-transmitting connecting layer, for example, optically clear adhesives (OCA). The refractive index of the light-transmitting connecting layer is smaller than the refractive index of the first light-transmitting layer 130 and the refractive index of the second light-transmitting layer 150. In this way, the spacer layer 170 is disposed between the first light-transmitting layer 130 and the second light-transmitting layer 150 to increase the amplitude of the illumination light beam L transmitted in the horizontal direction.

[0041] The protective layer 180 is disposed on the second reflective layer 160. The second reflective layer 160 is located between the first reflective layer 140 and the protective layer 180. The protective layer 180 is, for example, transparent glass or plastic, but the present invention is not limited thereto. The top surface of the protective layer 180 (i.e., the light-emitting surface of the light-emitting module 100) can be designed to have a three-dimensional structure pattern, such as Figure 3As shown, the present invention is not limited thereto.

[0042] Therefore, when the light emitting component 120 provides the illumination beam L, the illumination beam L is transmitted through the through hole 112 of the substrate 110 and the light entrance hole 142 of the first reflective layer 140 to enter the first light-transmitting layer 130, and then transmitted between the first light-transmitting layer 130, the spacer layer 170 and the second light-transmitting layer 150 through the reflection effect of the first reflective layer 140 and the second reflective layer 160, and is transmitted in the horizontal direction (i.e., perpendicular to the structural stacking direction of 100). Finally, the illumination beam L is transmitted through the protective layer 180 from the light-transmitting pattern 162 of the second reflective layer 160, and is emitted from the light-emitting surface of the light emitting module 100, so that the human eye can observe the luminous light-transmitting pattern 162. In this way, under the configuration of this embodiment, the light emitting module 100 can have a smaller volume and a lower manufacturing cost, and has a good lighting effect. Under the configuration of this embodiment, the distance D1 from the center position of the orthographic projection of the light emitting component 120 on the second reflective layer 160 to the light-transmitting pattern 162 can be between 3 mm and 6 mm. In addition, under the configuration of this embodiment, the distance D2 from the light emitting surface of the light emitting component 120 to the light emitting surface of the light emitting module 100 can be less than or equal to 0.2 mm.

[0043] In summary, in the light-emitting module of the present invention, the light-emitting module includes a substrate, a light-emitting component, a first light-transmitting layer, a first reflective layer, a second light-transmitting layer, a second reflective layer, a spacer layer and a protective layer. When the light-emitting component provides an illumination beam, the illumination beam is transmitted through the through hole of the substrate and the light entrance hole of the first reflective layer to enter the first light-transmitting layer, and then through the reflection effect of the first reflective layer and the second reflective layer, it is transmitted between the first light-transmitting layer, the spacer layer and the second light-transmitting layer, and is transmitted in the horizontal direction at the same time. Finally, the illumination beam is transmitted through the protective layer by the light-transmitting pattern of the second reflective layer, and is emitted from the light-emitting surface of the light-emitting module, so that the human eye can observe the light-transmitting pattern. In this way, the light-emitting module can have a smaller volume and a good light-emitting effect.

[0044] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A light emitting module, characterized in that: include: a substrate having opposing bottom and top sides, the substrate including a through hole; a light emitting component, disposed on the bottom side of the substrate, for providing an illumination beam to be transmitted through the through hole of the substrate; A first light-transmitting layer, disposed on the top side of the substrate; a first reflective layer formed on a surface of the first light-transmitting layer, the first reflective layer comprising a light entrance hole for allowing the illumination light beam to pass through; A second light-transmitting layer, disposed on the first light-transmitting layer, wherein the first light-transmitting layer is located between the substrate and the second light-transmitting layer; a second reflective layer formed on a surface of the second light-transmitting layer, wherein the second reflective layer comprises a light-transmitting pattern for allowing the illumination light beam to pass through; a spacer layer, disposed between the first light-transmitting layer and the second light-transmitting layer; and The protective layer is configured on the second reflective layer, and the second reflective layer is located between the first reflective layer and the protective layer, wherein the thickness of the first light-transmitting layer is smaller than the thickness of the second light-transmitting layer.

2. The light emitting module according to claim 1, characterized in that: The first reflective layer is located between the substrate and the first light-transmitting layer.

3. The light emitting module according to claim 1, characterized in that: The second reflective layer is located between the second light-transmitting layer and the protective layer.

4. The light emitting module according to claim 1, characterized in that: The light incident hole and the light-transmitting pattern do not overlap in a structural stacking direction of the light-emitting module.

5. The light emitting module according to claim 1, characterized in that: The distance from the center position of the orthographic projection of the light-emitting component on the second reflective layer to the light-transmitting pattern is between 3 mm and 6 mm.

6. The light emitting module according to claim 1, characterized in that: The spacer layer is an air layer, and the first light-transmitting layer and the second light-transmitting layer are not connected on the transmission path of the illumination light beam.

7. The light emitting module according to claim 1, characterized in that: The spacer layer is a light-transmitting connecting layer, and the refractive index of the light-transmitting connecting layer is smaller than the refractive index of the first light-transmitting layer and the refractive index of the second light-transmitting layer.

8. The light emitting module according to claim 1, characterized in that: The distance from the light emitting surface of the light emitting component to the light emitting surface of the light emitting module is less than or equal to 0.2 mm.

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