TWM619072U - Light-emitting module - Google Patents

Abstract

A light emitting module includes a lamp housing, a transparent substrate arranged on the surface of the lamp housing, and a light emitting unit, a first electrode, a second electrode and an insulating unit arranged on the transparent substrate. The light-emitting unit includes a first conductive layer, an electroluminescent layer and a second conductive layer stacked in sequence. The first electrode and the second electrode are disposed on the transparent substrate, and are electrically connected to the first conductive layer and the second conductive layer, respectively. The insulating unit is arranged between the electroluminescent layer and the first electrode, and between the electroluminescent layer and the second electrode. The light-emitting unit, the first electrode, the second electrode, and the insulating unit are directly arranged on the lamp housing through the transparent substrate without the need of matching the arrangement of the reflector, which can greatly reduce the installation volume of the light-emitting module.

Description

Light-emitting module

The present invention relates to a light-emitting device, in particular to a light-emitting module that can reduce the installation volume.

In recent years, light-emitting diodes (LEDs) are mostly used as the light source for daily lighting or automotive lighting on the market. General lighting devices usually include a lamp housing, a reflector, and a reflector that is arranged between the lamp housing and the reflector. Of light-emitting diodes. Since the LED light source is a point light source, the reflector cup with a special curved shape can gather and reflect the light source emitted by the LED, and emit a light beam with a specific luminous pattern out of the lamp housing.

However, since the volume of the reflector cup is several times that of the light-emitting diode, the volume of the light-emitting device is greatly increased, and the light generated by the point light source with the reflector cup is prone to uneven brightness.

Therefore, the purpose of the present invention is to provide a light emitting module that can overcome at least one of the disadvantages of the prior art.

Therefore, the light-emitting module of the present invention includes a lamp housing, a transparent substrate arranged against the surface of the lamp housing, and a light-emitting unit, a first electrode, a second electrode, and a light-emitting unit arranged on the transparent substrate. Insulation unit.

The light-emitting unit is arranged on a side of the transparent substrate facing away from the lamp housing, and includes a first conductive layer, an electroluminescent layer and a second conductive layer laminated in sequence. The first electrode and the second electrode are disposed on the transparent substrate, and are electrically connected to the first conductive layer and the second conductive layer, respectively. The insulating unit is arranged between the electroluminescent layer and the first electrode, and between the electroluminescent layer and the second electrode.

The effect of the present invention is that the light-emitting unit, the first electrode, the second electrode and the insulating unit are directly arranged on the lamp housing through the transparent substrate, without the need for the arrangement of a reflector, which can greatly reduce the light emission. The installation volume of the module.

1 to 4, an embodiment of the light-emitting module of the present invention includes a lamp housing 1, a transparent substrate 2 disposed against the surface of the lamp housing 1, and a light-emitting unit disposed on the transparent substrate 2 3. A first electrode 4, a second electrode 5 and an insulating unit 6.

The light-emitting unit 3 is disposed on a side of the transparent substrate 2 that faces away from the lamp housing 1, and includes a first conductive layer 31, an electroluminescent layer 32, and a first conductive layer 31, an electroluminescent layer 32, which are sequentially stacked in a direction away from the transparent substrate 2. The second conductive layer 33. The light-emitting unit 3 can be electrically driven to form a planar light source, and the light emitted from the planar light source will penetrate the transparent substrate 2 and the lamp housing 1 and be emitted.

The light-emitting unit 3 can design the effective light-emitting area of the electroluminescent layer 32 through etching technology to generate a specific light-emitting pattern. Since the light-emitting pattern is achieved through a patterned design of a surface light source, compared with the light-emitting pattern produced by a point light source with a reflector, it not only has the advantages of easy design and reduced installation volume, but also has the advantage of more uniform brightness.

The material of the transparent substrate 2 is, for example, but not limited to glass or crystalline plastic (PTE), and its thickness is between 0.1-3 mm. The materials of the first conductive layer 31 and the second conductive layer 33 are, for example, but not limited to, indium tin oxide (ITO) or conductive silver paste (Silver Conductive Ink), and the thickness thereof is between 10 nm and 160 nm. The material of the electroluminescent layer 32 is, for example, but not limited to, zinc sulfide, gallium arsenide, or blue diamond. Copper-doped zinc sulfide, silver-doped zinc sulfide, magnesium-doped zinc sulfide, or zinc sulfide doped with magnesium can also be used. The thickness of blue diamond with doped boron is between 1 and 100μm.

The first electrode 4 is disposed on a side of the transparent substrate 2 facing away from the lamp housing 1 and is electrically connected to the first conductive layer 31. The second electrode 5 includes a connecting portion 51 and a channel portion 52. The connecting portion 51 and the first electrode 4 are arranged on the same side of the light emitting unit 3, and the channel portion 52 extends from the connecting portion 51 to the light emitting unit. The unit 3 is far away from the connecting portion 51 and electrically connected to the second conductive layer 33 upward, so that a part of the channel portion 52 is covered by the second conductive layer 33. The light-emitting unit 3 and the channel portion 52 are spaced apart from each other to define an insulating channel 70 together with the transparent substrate 2. The arrangement of the insulating channel 70 can avoid the channel portion 52 and the electroluminescent layer 32 or the first conductive layer 31 Electrical connection.

Preferably, the channel portion 52 may have a double-layer structure, for example, the lower layer material is the same as the material of the first conductive layer 31, the upper layer material is metal, and the manufacturing method of the lower layer of the channel portion 52 and the first conductive layer 31 is, for example, Firstly, indium tin oxide (ITO) is formed on the transparent substrate 2, and then the insulating channel 70 is made by dry or wet etching technology to separate the lower layer of the channel portion 52 and the first conductive layer 31, and then use a screen Screen printing prints metal materials above the lower layer to form the upper layer of the channel portion 52. The design of the double-layer structure can reduce the amount of metal materials and has the advantage of reducing manufacturing costs.

With the design of the channel portion 52 of the second electrode 5, the current flowing into the light-emitting unit 3 from the first electrode 4 can be guided to diffuse in the direction of the channel portion 52 and flow back to the connection along the channel portion 52. The portion 51 forms a loop, therefore, the area of the current flowing through the electroluminescent layer 32 can be expanded and the current can be more evenly distributed in the electroluminescent layer 32, thereby achieving the effect of improving brightness and uniformity.

The materials of the first electrode 4 and the second electrode 5 are, for example, but not limited to, silver conductive ink.

The first insulating layer 61 is filled and arranged between the first electrode 4 and the electroluminescent layer 32 to prevent the first electrode 4 from being connected to the electroluminescent layer 32. The second insulating layer 62 is filled and arranged between the connecting portion 51 of the second electrode 5 and the light-emitting unit 3, so as to prevent the connection portion 51 from being connected to the light-emitting unit 3. The thicknesses of the first insulating layer 61 and the second insulating layer 62 are 6-12 μm, respectively.

In this embodiment, the material of the first insulating layer 61 and the insulating channel 70 is air, and the material of the second insulating layer 62 is silicon dioxide, but in other embodiments of the present invention, this is not However, for example, the material of the first insulating layer 61 and the insulating channel 70 can also be silicon dioxide, alkyd resin, melamine resin, acrylic resin or epoxy resin, and the material of the second insulating layer 62 can also be air, Alkyd resin, melamine resin, acrylic resin or epoxy resin.

In summary, the light-emitting unit 3, the first electrode 4, the second electrode 5, and the insulating unit 6 are directly arranged on the lamp housing 1 through the transparent substrate 2, and the electroluminescent unit is designed by etching technology. The effective light-emitting area of the light-emitting layer 32 allows the light-emitting unit 3 to produce a specific light-emitting pattern, which is more flexible and convenient in the production and design of the light-emitting pattern, and does not need to be equipped with a reflector, which can greatly reduce the cost of the light-emitting module. Installation volume. On the other hand, through the design of the connecting portion 51 and the channel portion 52 of the second electrode 5, the effect of improving the brightness and uniformity of the light-emitting module can also be achieved.

However, the above are only examples of the present model, and should not be used to limit the scope of implementation of the present model, all simple equivalent changes and modifications made in accordance with the patent scope of the present model application and the contents of the patent specification still belong to This new patent covers the scope.

1: Lamp housing 2: Transparent substrate 3: Light-emitting unit 31: The first conductive layer 32: Electroluminescent layer 33: second conductive layer 4: the first electrode 5: second electrode 51: connecting part 52: Channel Department 6: Insulation unit 61: first insulating layer 62: second insulating layer 70: Insulated channel

The other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, among which: Figure 1 is a perspective view illustrating an embodiment of the new type of light emitting module; Figure 2 is a schematic diagram illustrating the current flow of the embodiment; Figure 3 is a cross-sectional view taken along the line III-III of Figure 2; and Fig. 4 is a cross-sectional view taken along the line IV-IV of Fig. 2;

1: Lamp housing

2: Transparent substrate

3: Light-emitting unit

31: The first conductive layer

32: Electroluminescent layer

33: second conductive layer

4: the first electrode

5: second electrode

51: connecting part

52: Channel Department

6: Insulation unit

61: first insulating layer

62: second insulating layer

70: Insulated channel

Claims (9)

A light-emitting module includes: a lamp housing; a transparent substrate arranged against the surface of the lamp housing; a light-emitting unit arranged on a side of the transparent substrate away from the lamp housing, and includes a first layer laminated in sequence A conductive layer, an electroluminescent layer, and a second conductive layer; a first electrode disposed on the transparent substrate and electrically connected to the first conductive layer; a second electrode disposed on the transparent substrate and electrically connected to The second conductive layer; and an insulating unit, arranged between the electroluminescent layer and the first electrode, and between the electroluminescent layer and the second electrode. The light-emitting module according to claim 1, wherein the second electrode includes a connecting portion and a channel portion, and the connecting portion and the first electrode are arranged on the same side of the light-emitting unit, and the channel portion is separated from the connecting portion. It extends and surrounds to a side of the light-emitting unit away from the connecting portion and is electrically connected to the second conductive layer. The channel portion and the light-emitting unit cooperate with each other to define an insulating channel. The light-emitting module according to claim 2, wherein the insulating unit includes a first insulating layer disposed between the first electrode and the electroluminescent layer, and a connecting portion and the second electrode disposed between the first insulating layer and the electroluminescent layer. The second insulating layer between the electroluminescent layers. The light-emitting module according to claim 1, wherein the substrate is a transparent thin plate. The light-emitting module according to claim 1, wherein the thickness of the transparent substrate is 0.1~3mm. The light-emitting module according to claim 1, wherein the material of the first conductive layer is indium tin oxide (ITO) with a thickness of 10 to 160 nm. The light-emitting module according to claim 1, wherein the material of the electroluminescent layer is one of zinc sulfide, gallium arsenide, and blue diamond, and its thickness is 1-100 μm. The light-emitting module according to claim 1, wherein the material of the second conductive layer is indium tin oxide (ITO), and the thickness of the second conductive layer is 10-160 nm. The light-emitting module according to claim 3, wherein the thickness of the first insulating layer and the second insulating layer are 6-12 μm, respectively.

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