Multi-color light source dispensing method

Abstract

The present application relates to the technical field of light source, disclose a multi-color light source dispensing method, comprising the following steps, 1), provide a substrate, the substrate has a cavity, the bottom of the cavity is provided with a plurality of longitudinal and horizontal staggered arrangement of the partition, the top of the partition is lower than the upper surface of the substrate; a plurality of partition divides the lower part of the cavity into a plurality of light emitting regions, the light emitting region is provided with a light emitting chip, 2), fill the lower part of the fluorescent glue layer in a plurality of light emitting regions, a plurality of light emitting regions filled with at least two different lower part of the fluorescent glue layer, 3), fill the upper part of the cavity with the upper part of the fluorescent glue layer, the upper part of the fluorescent glue layer covers the lower part of the fluorescent glue layer; using a plurality of partition, can make two different lower part of the fluorescent glue layer is not easy to mix, finally fill the upper part of the cavity with the upper part of the fluorescent glue layer, the cavity can prevent the lower part of the fluorescent glue layer and the upper part of the fluorescent glue layer leakage, in this way, can form a multi-color light source, will not appear fluorescent glue mixed, and the multi-color temperature effect of the light source is good, the manufacturing process is simple.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of light sources, in particular to a multi-color light source dispensing method. BACKGROUND

[0002] The light source is a light-emitting element in various lamps, which includes a substrate and light-emitting chips arranged on the substrate. The light-emitting chips are electrically connected to the substrate, and fluorescent glue is dispensed on the substrate. The fluorescent glue wraps the light-emitting chips, and the light emitted by the light-emitting chips is transmitted through the fluorescent glue.

[0003] The substrate has a cavity, and a plurality of partitions divide the lower part of the cavity into a plurality of light-emitting areas. The light-emitting chips are arranged in the light-emitting areas, and the fluorescent glue is dispensed in the light-emitting areas. The light emitted by the light-emitting chips is transmitted through the fluorescent glue. According to the different arrangements of the fluorescent glue, the color of the light transmitted by the light-emitting chips under the fluorescent glue is different, such as various warm light, etc.

[0004] In the prior art, when the light source needs to realize multiple multi-color light sources, multiple partitions need to be arranged in the light-emitting area. Generally, the fluorescent glue is arranged in the partitions. According to actual needs, the fluorescent glue in adjacent partitions can be arranged differently to achieve at least a dual-color temperature effect.

[0005] However, during the dispensing process of the multi-color light source, the fluorescent glue between adjacent partitions often mixes, resulting in poor quality of the multi-color temperature effect of the light source and a complex manufacturing process. SUMMARY

[0006] The present application provides a multi-color light source dispensing method to solve the problem of fluorescent glue mixing during the dispensing process of the multi-color light source in the prior art.

[0007] The present application is implemented as follows: a multi-color light source dispensing method includes the following steps:

[0008] 1) providing a substrate, the substrate has a cavity, the bottom of the cavity is provided with a plurality of longitudinally and transversely arranged partitions, the top of the partition is lower than the upper surface of the substrate and is sunken in the cavity; a plurality of partitions divide the lower part of the cavity into a plurality of light-emitting areas, and the light-emitting areas are provided with light-emitting chips;

[0009] 2) filling the lower part of the light-emitting area with a lower fluorescent glue layer, and the light-emitting area is filled with at least two different lower fluorescent glue layers;

[0010] 3) filling the upper part of the cavity with an upper fluorescent glue layer, and the upper fluorescent glue layer covers the lower fluorescent glue layer.

[0011] Optionally, in the step 2), the lower fluorescent glue layer covers the light emitting chip in the light emitting area.

[0012] Optionally, in the step 3), the top of the upper fluorescent glue layer is arranged flush with the upper surface of the substrate.

[0013] Optionally, the plurality of light emitting areas are arranged in a dot matrix array.

[0014] Optionally, the plurality of light emitting areas are arranged in a staggered manner.

[0015] Optionally, the upper fluorescent glue layer is a fluorescent glue layer containing a single fluorescent powder.

[0016] Optionally, the upper fluorescent glue layer includes a plurality of fluorescent glue layers each containing a different fluorescent powder, and the plurality of fluorescent glue layers are arranged in sequence.

[0017] Optionally, the plurality of partition strips have an outwardly arranged outer surface coated with a transparent glue layer.

[0018] Optionally, in the step 3), the upper fluorescent glue layer is sprayed on the upper part of the cavity by a spraying head.

[0019] The spraying head is connected with a glue feeding pipe, and the spraying head is provided with a transversely arranged extrusion cavity, the rear end of the extrusion cavity is formed with a plurality of glue feeding holes for the upper fluorescent glue layer to pass through, and the plurality of glue feeding holes are arranged in a spaced manner along the transverse direction of the extrusion cavity; the front end of the extrusion cavity is formed with a flat glue spraying port extending along the transverse direction of the extrusion cavity.

[0020] Along the direction from the rear to the front of the extrusion cavity, the extrusion cavity has a shape of large in the middle and small at both ends; the extrusion cavity is provided with two elastic membrane layers arranged oppositely and located on both sides of the glue spraying port, and a glue containing space is formed between the two membrane layers; the both ends of the membrane layer are fixedly connected with the inner side wall of the extrusion cavity, and the middle part of the membrane layer has a deformation space with the inner side wall of the extrusion cavity; the both sides of the spraying head are respectively provided with air inlet holes in communication with the deformation space, and the air inlet holes are connected with a fan through a pipeline.

[0021] In the step 3), during the process of feeding the upper fluorescent glue layer into the glue containing space through the glue feeding pipe, the fan injects gas with a set pressure into the deformation space through the pipeline to drive the membrane layer to deform towards the glue containing space, and at the same time, the upper fluorescent glue layer in the glue containing space is extruded to be continuously extruded out of the glue spraying port, and the upper fluorescent glue layer extruded out of the glue spraying port is sprayed on the upper part of the cavity to form the upper fluorescent glue layer covering the lower fluorescent glue layer.

[0022] Optionally, the film layer comprises a plurality of thick film segments and a plurality of thin film segments, the thick film segments and the thin film segments are sequentially staggered and connected along the direction from the rear end to the front end of the extrusion cavity, and the width of the thin film segments gradually increases; the rear end of the thick film segment is greater than the thickness of the thin film segment, and the deformation resistance of the thick film segment is greater than the deformation resistance of the thin film segment.

[0023] In the step 3), in the process that the fan injects the gas with the set pressure into the deformation space through the pipeline, the range of the thin film segment protruding and deforming towards the glue containing space is greater than the range of the thick film segment protruding and deforming towards the glue containing space, and the deformation speed of the thin film segment is greater than the deformation speed of the thick film segment.

[0024] Compared with the prior art, the present application provides a multi-color light source dispensing method, which uses a plurality of partitions to prevent two different lower fluorescent glue layers from mixing, and then fills the upper fluorescent glue layer in the upper part of the cavity, so that the lower fluorescent glue layer and the upper fluorescent glue layer are prevented from leaking out of the cavity, thus forming a multi-color light source without mixing of the fluorescent glue, and the multi-color temperature effect of the light source is good, and the manufacturing process is simple. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 is a top view of the substrate provided by the present application;

[0026] Figure 2 is a cross-sectional view of the substrate provided by the present application;

[0027] Figure 3 is a cross-sectional view of the spraying head provided by the present application;

[0028] Figure 4 is a cross-sectional view of the spraying head provided by the present application. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical scheme and advantages of the present application clearer, the present application is further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application and do not limit the present application.

[0030] The implementation of the present application is described in detail below in combination with specific examples.

[0031] The same or similar reference numerals in the drawings of the embodiments correspond to the same or similar components; in the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore the terms describing the positional relationship in the drawings are only used for exemplary illustration, and cannot be understood as a limitation on the present application, for those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0032] Referring to Figures 1-4 the preferred embodiments provided by the present application.

[0033] The multi-color light source dispensing method provided by the present application comprises the following steps:

[0034] 1) providing a substrate 100, the substrate 100 has a recess cavity 101, the bottom of the recess cavity 101 is provided with a plurality of longitudinal and transverse staggered partition strips 102, the top of the partition strips 102 is lower than the upper surface of the substrate 100 and is sunken in the recess cavity 101; the plurality of partition strips 102 divides the lower part of the recess cavity 101 into a plurality of light emitting areas, and a light emitting chip 103 is arranged in each light emitting area;

[0035] 2) filling a lower fluorescent glue layer 201 in the plurality of light emitting areas, and the plurality of light emitting areas are filled with at least two different lower fluorescent glue layers 201;

[0036] 3) filling an upper fluorescent glue layer 202 in the upper part of the recess cavity 101, and the upper fluorescent glue layer 202 covers the lower fluorescent glue layer 201.

[0037] The multi-color light source dispensing method provided above uses a plurality of partition strips 102 to prevent the two different lower fluorescent glue layers 201 from mixing, and then fills the upper fluorescent glue layer 202 in the upper part of the recess cavity 101, so that the lower fluorescent glue layer 201 and the upper fluorescent glue layer 202 are prevented from leaking out of the recess cavity 101, thus forming a multi-color light source without mixing of the fluorescent glue, and the multi-color temperature effect of the light source is good in quality and the manufacturing process is simple.

[0038] In step 2), the lower fluorescent glue layer 201 covers the light emitting chip 103 in the light emitting area. In this way, it is ensured that the lower fluorescent glue layer 201 can completely cover the periphery of the light emitting chip 103, and the light emitting performance of the light emitting chip 103 is ensured.

[0039] In step 3), the top of the upper fluorescent glue layer 202 is arranged flush with the upper surface of the substrate 100. In this way, the excess upper fluorescent glue layer 202 will not flow out from the openings around the recess cavity 101 before solidification.

[0040] The plurality of light-emitting areas are arranged in a dot matrix array. In this way, the plurality of light-emitting areas are arranged in an array, and the quality of the multi-color temperature effect presented is good.

[0041] The plurality of light-emitting areas are arranged in a staggered manner. In this way, the different lower fluorescent glue layers 201 in the staggered light-emitting areas can present a good multi-color temperature effect.

[0042] The upper fluorescent glue layer 202 is a fluorescent glue layer containing a single fluorescent powder. In this way, the upper fluorescent glue layer 202 can select a fluorescent powder according to requirements, and the upper fluorescent glue layer 202 can be used to fill the cavity 101, so that the emitted light can achieve the desired luminous efficiency, color temperature, color rendering index, etc.

[0043] The upper fluorescent glue layer 202 includes a plurality of layers of fluorescent glue layers containing different fluorescent powders, and the plurality of fluorescent glue layers are arranged in sequence. In this way, the fluorescent powders in the upper fluorescent glue layer 202 can be changed according to requirements, so that the emitted light can achieve the desired luminous efficiency, color temperature, color rendering index, etc.

[0044] The plurality of partitions 102 have an outer surface arranged outwardly, and the outer surface is coated with a transparent glue layer. In this way, the transparent glue layer has adhesion, and the liquid lower fluorescent glue layer 201 on both sides of the partition 102 cannot pass through the partition 102 and cause mixing.

[0045] In step 3), the upper fluorescent glue layer 202 is sprayed on the upper part of the cavity 101 by the spraying head 300;

[0046] The spraying head 300 is connected with a glue feeding pipe, and the spraying head 300 is provided with an extrusion cavity 301 arranged transversely, the rear end of the extrusion cavity 301 is formed with a plurality of glue feeding holes 302 for the upper fluorescent glue layer 202 to pass through, and the plurality of glue feeding holes 302 are arranged at intervals along the transverse direction of the extrusion cavity 301; the front end of the extrusion cavity 301 is formed with a flat glue spraying port 303, and the glue spraying port 303 is arranged extending along the transverse direction of the extrusion cavity 301;

[0047] Along the direction from the rear to the front of the extrusion cavity 301, the extrusion cavity 301 has a large middle and small ends; the extrusion cavity 301 is provided with two elastic film layers 304, the two film layers 304 are arranged oppositely and located on both sides of the glue spraying port 303, and a glue containing space is formed between the two film layers; the two ends of the film layer 304 are fixedly connected with the inner side wall of the extrusion cavity 301, and the middle part of the film layer 304 has a deformation space 305 with the inner side wall of the extrusion cavity 301; the two sides of the spraying head 300 are respectively provided with air inlet holes 306, the air inlet holes 306 are communicated with the deformation space 305, and the air inlet holes 306 are connected with a fan through a pipeline 307;

[0048] In step 3), in the process of transporting the upper fluorescent glue layer 202 to the glue containing space through the glue conveying pipe, the fan injects the gas with a set pressure into the deformation space 305 through the pipeline 307, drives the diaphragm to deform towards the glue containing space, and at the same time extrudes the upper fluorescent glue layer 202 in the glue containing space to be extruded out of the glue injection port 303 continuously, and sprays the upper fluorescent glue layer 202 extruded out of the glue injection port 303 to the upper part of the concave cavity 101, forming the upper fluorescent glue layer 202 covering the lower fluorescent glue layer 201.

[0049] In the process of spraying the upper fluorescent glue layer 202, in the process of injecting the glue containing space and extruding towards the glue injection port 303, the film layer 304 is also deformed towards the glue containing space under the driving of the gas with a set pressure, extruding the first fluorescent glue in the glue containing space, so that the first fluorescent glue in the glue containing space is more compact, and the first fluorescent glue sprayed out of the glue injection port 303 is sprayed continuously.

[0050] The film layer 304 includes a plurality of thick film segments 3040 and a plurality of thin film segments 3041, the thick film segments 3040 and the thin film segments 3041 are sequentially and staggeringly connected along the direction from the rear end to the front end of the extrusion cavity 301, and the width of the thin film segments 3041 gradually increases; the rear end of the thick film segment 3040 is greater than the thickness of the thin film segment 3041, and the anti-deformation strength of the thick film segment 3040 is greater than the anti-deformation strength of the thin film segment 3041.

[0051] In step 3), in the process of injecting the gas with a set pressure into the deformation space 305 by the fan through the pipeline 307, the range of the thin film segment 3041 protruding and deforming towards the glue containing space is greater than the range of the thick film segment 3040 protruding and deforming towards the glue containing space, and the deformation speed of the thin film segment 3041 is greater than the deformation speed of the thick film segment 3040.

[0052] In the process of spraying the upper fluorescent glue layer 202, the film layer 304 deforms towards the glue containing space under the driving of the gas with a set pressure, and at the same time, since the film layer 304 includes a plurality of thick film segments 3040 and a plurality of thin film segments 3041, the anti-deformation abilities and the deformation speeds of the thick film segments 3040 and the thin film segments 3041 are different, so that the thick film segments 3040 and the thin film segments 3041 continuously protrude and deform under the driving of the gas with a set pressure, and are continuous, promoting the upper fluorescent glue layer 202 to be sprayed out of the glue injection port 303, so that the upper fluorescent glue layer 202 sprayed out of the glue injection port 303 is sprayed continuously.

[0053] The above only describes the preferred embodiments of the present application and is not used to limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-color light source dispensing method, characterized by, The method comprises the following steps: 1) providing a substrate, the substrate having a concave cavity, the bottom of the concave cavity being provided with a plurality of longitudinal and transverse intersecting partition strips, the top of the partition strips being lower than the upper surface of the substrate and being sunken in the concave cavity; the plurality of partition strips divide the lower part of the concave cavity into a plurality of light emitting areas, the light emitting areas being provided with light emitting chips; 2) filling the plurality of light emitting areas with a lower fluorescent glue layer, the plurality of light emitting areas being filled with at least two different lower fluorescent glue layers; 3) filling the upper part of the concave cavity with an upper fluorescent glue layer, the upper fluorescent glue layer covering the lower fluorescent glue layer; in the step 3), the upper fluorescent glue layer is sprayed on the upper part of the concave cavity by a spraying head; the spraying head is connected with a glue conveying pipe, the spraying head being provided with a transversely arranged extrusion cavity, the rear end of the extrusion cavity being formed with a plurality of glue inlet holes for the upper fluorescent glue layer to pass through, the plurality of glue inlet holes being arranged at intervals along the transverse direction of the extrusion cavity; the front end of the extrusion cavity being formed with a flat glue spraying port, the glue spraying port being arranged in extension along the transverse direction of the extrusion cavity; along the direction from the rear to the front of the extrusion cavity, the extrusion cavity is large in the middle and small at both ends; the extrusion cavity is provided with two elastic film layers, the two film layers being oppositely arranged and respectively located on both sides of the glue spraying port, a glue containing space being formed between the two film layers; the two ends of the film layer are fixedly connected with the inner side wall of the extrusion cavity, the middle part of the film layer having a deformation space with the inner side wall of the extrusion cavity; the two sides of the spraying head are respectively provided with air inlet holes, the air inlet holes being communicated with the deformation space, the air inlet holes being connected with a fan through a pipeline; in the step 3), during the process of conveying the upper fluorescent glue layer to the glue containing space through the glue conveying pipe, the fan injects gas with a set pressure into the deformation space through the pipeline, drives the film layer to deform towards the glue containing space, and at the same time extrudes the upper fluorescent glue layer in the glue containing space to continuously extrude the glue spraying port, and sprays the upper fluorescent glue layer extruded through the glue spraying port into the upper part of the concave cavity, to form the upper fluorescent glue layer covering the lower fluorescent glue layer; the film layer comprises a plurality of thick film segments and a plurality of thin film segments, along the direction from the rear end to the front end of the extrusion cavity, the thick film segments and the thin film segments are sequentially and staggeringly connected, and the width of the thin film segments gradually increases; the rear end of the thick film segment is larger than the thickness of the thin film segment, and the anti-deformation strength of the thick film segment is greater than that of the thin film segment; in the step 3), during the process of the fan injecting gas with a set pressure into the deformation space through the pipeline, the range of the thin film segment protruding and deforming towards the glue containing space is greater than that of the thick film segment, and the deformation speed of the thin film segment is greater than that of the thick film segment.

2. The multi-color light source dispensing method of claim 1, wherein, in the step 2), the lower fluorescent glue layer covers the light emitting chips in the light emitting areas.

3. The multi-color light source dispensing method of claim 1, wherein, in the step 3), the top of the upper fluorescent glue layer is flush with the upper surface of the substrate.

4. The multi-color light source dispensing method of claim 1, wherein, the plurality of light emitting areas are arranged in a dot matrix array.

5. The multi-color light source dispensing method of claim 1, wherein, the plurality of light emitting areas are arranged in a staggered and adjacent manner.

6. The multi-color light source dispensing method according to any one of claims 1 to 5, wherein the upper fluorescent glue layer is a fluorescent glue layer containing single fluorescent powder.

7. The multi-color light source dispensing method according to any one of claims 1 to 5, wherein The upper fluorescent glue layer comprises multiple layers of fluorescent glue layers containing different fluorescent powders, and the multiple layers of fluorescent glue layers are arranged in sequence.

8. The multi-color light source dispensing method according to any one of claims 1 to 5, wherein The multiple partition strips have outward arranged outer surfaces coated with transparent glue layers.

Images