Light source flat dispensing method

Abstract

The present invention relates to the technical field of light sources, and discloses a method for smooth glue dispensing of light sources, comprising the following steps: 1) providing a substrate, wherein a dam is provided on the substrate, the dam is enclosed on the substrate to form a light-emitting area, and a light-emitting chip is provided in the light-emitting area; 2) applying fluorescent glue on the light-emitting area, and the top surface of the fluorescent glue after the glue dispensing is spherical; 3) providing a flattening mold, wherein the flattening mold comprises a base and a pressure head, wherein the pressure head has a pressure groove with a bottom opening, and the top of the pressure groove has a pressure plane; placing the substrate after the glue dispensing on the base, driving the pressure head to move downward, and using the pressure plane to press the top surface of the fluorescent glue for a set time, the top surface of the fluorescent glue is pressed to be a flat surface; after the glue is dispensed on the light-emitting area, the top surface of the fluorescent glue is spherical, and then the pressure head of the flattening mold is pressed from top to bottom on the top surface of the fluorescent glue, and the top surface of the fluorescent glue is pressed to be flat by the pressure plane, thereby greatly improving the light-emitting quality of the light source.

Description

Technical Field

[0001] The invention relates to the technical field of light sources, and more specifically, to a method for smooth glue dispensing of light sources. Background Art

[0002] The light source is a common light-emitting element in daily life, which includes a substrate and a light-emitting chip. A dam is provided on the substrate, and the dam surrounds a light-emitting area on the substrate. The light-emitting chip is arranged on the light-emitting area and emits light by powering on.

[0003] After the light-emitting chip is arranged in the light-emitting area, a glue dispensing operation is performed in the light-emitting area, that is, fluorescent glue is dispensed in the light-emitting area. The fluorescent glue covers the light-emitting chip in the light-emitting area. In this way, the light emitted by the light-emitting chip is transmitted through the fluorescent glue to achieve light of corresponding color temperature.

[0004] In the prior art, during the dispensing process, since the fluorescent glue is in a fluid state, the top surface of the fluorescent glue after dispensing is spherical instead of flat, which greatly reduces the luminous quality of the light source. Summary of the invention

[0005] The present invention provides a method for evenly dispensing glue on a light source, aiming to solve the problem in the prior art that the top surface of the fluorescent glue after dispensing is spherical.

[0006] The present invention is implemented in this way: a method for leveling glue of a light source comprises the following steps:

[0007] 1) Providing a substrate, on which a dam is provided, the dam encloses a light-emitting area on the substrate, and the light-emitting area is provided with a plurality of light-emitting chips;

[0008] 2) Applying fluorescent glue on the light-emitting area, the fluorescent glue covers the entire light-emitting area and the light-emitting chip, and the top surface of the fluorescent glue after application is spherical;

[0009] 3) Providing a flattening mold, the flattening mold comprising a base and a pressing head that moves up and down relative to the base, the pressing head having a pressing groove with an opening at the bottom, and the top of the pressing groove having a horizontally arranged pressing plane;

[0010] Place the glue-dispensed substrate on the base, drive the pressure head to move downward until the dam and the luminous area are placed in the pressure groove, and use the pressure plane to press the top surface of the fluorescent glue from top to bottom until the set time, and the top surface of the fluorescent glue is pressed to be a flat surface.

[0011] Furthermore, in the step 3), the pressing head has a horizontally arranged bottom surface, and the bottom surface is arranged at the periphery of the pressing groove; when the dam and the light-emitting area are placed in the pressing groove, the pressing plane presses against the top surface of the fluorescent glue, and then the pressing head continues to move downward until the bottom surface abuts against the substrate.

[0012] Furthermore, the bottom surface is covered with a horizontally arranged elastic layer. In the step 3), after the bottom surface abuts against the substrate, the pressing head continues to move downward until the elastic layer is pressed and deformed.

[0013] Furthermore, in the step 3), after the elastic layer is deformed by the pressing, the pressing state is maintained unchanged for a set time, and the pressure head is moved upward to restore the elastic layer to its original state. The elastic layer restored to its original state is maintained in contact with the substrate for a set time, and then the pressure head is moved upward again to release the pressing plane from the top surface of the fluorescent glue.

[0014] Furthermore, the elastic layer is recessed upward to form a plurality of groove rings, the plurality of groove rings are nested and arranged in sequence, and the groove rings are arranged around the outer circumference of the pressing groove; in the step 3), when the elastic layer is deformed after being pressed against the substrate, the groove rings are also deformed by extrusion.

[0015] Furthermore, the outer periphery of the pressing plane is recessed upward to form a positioning groove with an open bottom, and the positioning groove is located inside the pressing groove; in the step 3), when the pressing plane moves downward to press against the top surface of the fluorescent glue and deforms downward, the pressure head stops moving downward until the upper part of the dam is embedded in the positioning groove.

[0016] Furthermore, a top slice extending downward is provided at the top of the positioning groove, the top slice is arranged around the circumference of the positioning groove, and a cutting edge is provided at the bottom of the top slice, and the cutting edge is located above the bottom opening of the positioning groove;

[0017] In the step 3), when the upper part of the dam is embedded in the positioning groove, the cutting blade presses downward against the fluorescent glue on the dam and cuts off the fluorescent glue on the dam.

[0018] Furthermore, along the top-down direction of the top slice, the middle part of the top slice is bent toward the center position of the pressing plane to form a bent section; in the step 3), when the upper part of the dam is embedded in the positioning groove, the cutting edge of the top slice is pressed downward against the fluorescent glue on the dam, and the bent section is bent and deformed toward the center position of the pressing plane, and the cutting edge deviates away from the center position of the pressing plane and cuts off the fluorescent glue on the dam.

[0019] Furthermore, the top of the top slice has an inclined surface, and the bottom of the inclined surface forms the cutting edge along the direction toward the center position of the pressing plane. The middle part of the inclined surface is provided with an inclined piece facing downward, and the inclined piece is arranged around the circumference of the top slice, and the inclined piece and the inclined surface are arranged in the same direction of inclination;

[0020] In the step 3), when the cutting blade is pressed against the fluorescent glue on the dam, the inclined sheet also presses against the fluorescent glue on the dam.

[0021] Furthermore, an enclosure wall extends downward from the top of the positioning groove, and the enclosure wall is arranged along the circumference of the positioning groove, and the enclosure wall encloses the outer periphery of the top slice; the bottom of the enclosure wall extends to below the bottom opening of the positioning groove;

[0022] In the step 3), after the upper portion of the dam is embedded in the positioning groove, the enclosing wall encloses the outer periphery of the dam and abuts against the outer side wall of the dam.

[0023] Compared with the prior art, the method for flattening glue dispensing of a light source provided by the present invention has a spherical top surface of the fluorescent glue after glue is dispensed on the light-emitting area. The pressure head of the flattening mold is then pressed from top to bottom on the top surface of the fluorescent glue, and the top surface of the fluorescent glue is pressed into a flat shape using the pressing surface, thereby greatly improving the luminous quality of the light source. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a schematic diagram of the process of the light source flat glue dispensing method provided by the present invention;

[0025] Figure 2 It is a front view schematic diagram of a spherical top surface of the fluorescent glue after dispensing in the light-emitting area provided by the present invention;

[0026] Figure 3 It is a front view schematic diagram showing that the top surface of the fluorescent glue provided by the present invention is pressed and flattened;

[0027] Figure 4 is a schematic front view of the pressure head provided by the present invention;

[0028] Figure 5 yes Figure 4 A is an enlarged schematic diagram;

[0029] Figure 6 It is a partially enlarged schematic diagram of the top slice provided by the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0031] The implementation of the present invention is described in detail below in conjunction with specific embodiments.

[0032] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0033] Please refer to Figure 1-6 The figure shows a preferred embodiment of the present invention.

[0034] The method for dispensing glue evenly for a light source comprises the following steps:

[0035] 1) Providing a substrate 100, on which a dam 101 is provided, the dam 101 encloses a light-emitting area on the substrate 100, and the light-emitting area is provided with a plurality of light-emitting chips;

[0036] 2) Apply fluorescent glue 102 to the light-emitting area. The fluorescent glue 102 covers the entire light-emitting area and the light-emitting chip. The top surface of the fluorescent glue 102 after application is spherical.

[0037] 3) Providing a flattening mold, the flattening mold comprising a base and a pressing head 200 that moves up and down relative to the base, the pressing head 200 having a pressing groove 201 with an opening at the bottom, and a horizontally arranged pressing plane 204 at the top of the pressing groove 201;

[0038] Place the glue-dispensed substrate 100 on the base, drive the pressing head 200 to move downward until the dam 101 and the light-emitting area are placed in the pressing groove 201, and use the pressing plane 204 to press the top surface of the fluorescent glue 102 from top to bottom until the set time, and the top surface of the fluorescent glue 102 is pressed to be a flat surface.

[0039] According to the above-mentioned method for smoothing glue dispensing of the light source, after glue is dispensed on the light-emitting area, the top surface of the fluorescent glue 102 is spherical, and then the pressure head 200 of the flattening mold is pressed from top to bottom on the top surface of the fluorescent glue 102, and the top surface of the fluorescent glue 102 is pressed into a flat shape using the pressing plane 204, thereby greatly improving the luminous quality of the light source.

[0040] In step 3), the pressing head 200 has a horizontally arranged bottom surface, which is arranged at the periphery of the pressing groove 201; when the dam 101 and the light-emitting area are placed in the pressing groove 201, the pressing plane 204 presses against the top surface of the fluorescent glue 102, and the pressing head 200 continues to move downward until the bottom surface abuts against the substrate 100.

[0041] In this way, the downward moving distance of the pressing head 200 can be positioned and limited, and the pressing plane 204 can be guaranteed to press the top surface of the fluorescent glue 102 for a sufficient time and accurately.

[0042] The bottom surface is covered with a horizontally arranged elastic layer 202 . In step 3), after the bottom surface abuts against the substrate 100 , the pressing head 200 continues to move downward until the elastic layer 202 is pressed and deformed.

[0043] Avoid hard contact between the bottom surface and the substrate 100 to avoid damage to the substrate 100. By setting the elastic layer 202, the moving distance of the pressure head 200 can be appropriately elastically limited. According to actual needs, the pressure of the pressing plane 204 on the top surface of the fluorescent glue 102 can be increased.

[0044] In step 3), after the elastic layer 202 is deformed by the pressing, the pressing state is maintained for a set time, and then the pressing head 200 is moved upward to restore the elastic layer 202 to its original state. The elastic layer 202 that has been restored to its original state is maintained in contact with the substrate 100 for a set time, and then the pressing head 200 is moved upward again to release the pressing surface 204 from the top surface of the fluorescent glue 102.

[0045] In this way, when the pressing plane 204 is pressing the top surface of the fluorescent glue 102, the pressing force is first increased for a set time, and then it moves upward appropriately, and continues to press the top surface of the fluorescent glue 102. By changing the pressing force from large to small, the top surface of the fluorescent glue 102 after being pressed can be kept stable and flat, thereby preventing the top surface of the fluorescent glue 102 from recovering from deformation.

[0046] In this embodiment, the elastic layer 202 is recessed upward to form a plurality of groove rings 203, and the plurality of groove rings 203 are nested and arranged in sequence, and the groove rings 203 are arranged around the outer periphery of the pressing groove 201; in step 3), when the elastic layer 202 is pressed against the substrate 100 and deformed, the groove rings 203 are also squeezed and deformed.

[0047] By providing the groove ring 203, when the elastic layer 202 is pressed, the elastic layer 202 can be easily deformed under pressure.

[0048] The outer periphery of the pressing plane 204 is recessed upward to form a positioning groove 300 with an open bottom, and the positioning groove 300 is located inside the pressing groove 201; in step 3), when the pressing plane 204 moves downward to press against the top surface of the fluorescent glue 102 which is deformed downward, the pressing head 200 stops moving downward until the upper part of the dam 101 is embedded in the positioning groove 300.

[0049] In this way, the downward movement distance of the pressure head 200 can be positioned, and the upper part of the dam 101 is embedded in the positioning groove 300, which can limit the fluorescent glue 102 in the light-emitting area from overflowing out of the light-emitting area after being pressed, resulting in insufficient fluorescent glue 102 in the light-emitting area.

[0050] A top slice 302 extending downward is provided at the top of the positioning groove 300. The top slice 302 is arranged around the circumference of the positioning groove 300. A cutting edge 306 is provided at the bottom of the top slice 302. The cutting edge 306 is located above the bottom opening of the positioning groove 300.

[0051] In step 3), when the upper portion of the dam 101 is embedded in the positioning groove 300 , the cutting blade 306 presses downward against the fluorescent glue 102 on the dam 101 and cuts off the fluorescent glue 102 on the dam 101 .

[0052] By providing a positioning groove 300 and a top slice 302 in the positioning groove 300, the fluorescent glue 102 in the light-emitting area can be limited from overflowing outward, and the fluorescent glue 102 overflowing to the top of the dam 101 can be cut off by the cutting blade 306 of the top slice 302. When the pressure head 200 moves upward, the fluorescent glue 102 is completely placed in the light-emitting area, and the fluorescent glue 102 that may exist outside the light-emitting area is cut off, thereby improving the glue dispensing quality of the light source.

[0053] In this embodiment, along the top-down direction of the top slice 302, the middle part of the top slice 302 is bent toward the center position of the pressing plane 204 to form a bent section 303; in step 3), when the upper part of the dam 101 is embedded in the positioning groove 300, the cutting edge 306 of the top slice 302 presses downward against the fluorescent glue 102 on the dam 101, and the bent section 303 bends and deforms toward the center position of the pressing plane 204, and the cutting edge 306 deviates from the center position of the pressing plane 204 and cuts off the fluorescent glue 102 on the dam 101.

[0054] When the bending section 303 is bent and deformed toward the center position of the pressing plane 204, the restoring force generated by the deformation makes the cutting blade 306 exert a greater cutting force on the fluorescent glue 102 on the dam 101, so that it is convenient for the cutting blade 306 to cut off the fluorescent glue 102 on the dam 101, and in the process of cutting, since the cutting blade 306 is subjected to the driving force deviating from the center position of the pressing plane 204, it is convenient to remove the cut fluorescent glue 102 from the luminous area.

[0055] In this embodiment, the top of the top slice 302 has an inclined surface 304, and the bottom of the inclined surface 304 forms the cutting edge 306 along the direction toward the center position of the pressing plane 204. The middle of the inclined surface 304 is provided with an inclined piece 305 facing downward, and the inclined piece 305 is arranged around the circumference of the top slice 302. The inclined piece 305 and the inclined surface 304 are arranged in the same inclined direction.

[0056] In step 3), when the cutting blade 306 presses against the fluorescent glue 102 on the dam 101 , the inclined sheet 305 also presses against the fluorescent glue 102 on the dam 101 .

[0057] By providing an inclined sheet 305 and cooperating with the cutting blade 306 to press against the fluorescent glue 102 on the dam 101 at the same time, the fluorescent glue 102 on the dam 101 can be cut twice. At the same time, since the cutting blade 306 and the inclined sheet 305 press against the fluorescent glue 102 on the dam 101 respectively, the fluorescent glue 102 on the dam 101 is in a fixed state while being cut, avoiding deformation caused by pulling, which makes cutting more difficult, and avoiding pulling on the fluorescent glue 102 in the light-emitting area.

[0058] In this embodiment, an enclosing wall 301 extends downward from the top of the positioning groove 300. The enclosing wall 301 is arranged along the circumference of the positioning groove 300 and encloses the outer periphery of the top slice 302. The bottom of the enclosing wall 301 extends to below the bottom opening of the positioning groove 300.

[0059] In step 3), after the upper portion of the dam 101 is embedded in the positioning groove 300 , the enclosing wall 301 encloses the outer periphery of the dam 101 and abuts against the outer side wall of the dam 101 .

[0060] By setting the enclosing wall 301, the enclosing wall 301 can be sleeved on the outer periphery of the dam 101 and abut against the outer side wall of the dam 101. In this way, when the cutting blade 306 cuts off the fluorescent glue 102 on the dam 101, the fluorescent glue 102 can be limited to be pulled outward under the restriction of the enclosing wall 301. In addition, by setting the enclosing wall 301, when the pressing plane 204 presses downward against the top surface of the fluorescent glue 102 in the light-emitting area, the fluorescent glue 102 can be limited to overflow and deviate outward, thereby ensuring that after the fluorescent glue 102 in the light-emitting area is pressed, the fluorescent glue 102 in the light-emitting area is still sufficiently saturated.

[0061] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for dispensing glue evenly on a light source, characterized in that: The following steps are involved: Step 1), providing a substrate, wherein a dam is provided on the substrate, wherein the dam encloses a light-emitting area on the substrate, and wherein a plurality of light-emitting chips are provided in the light-emitting area; Step 2), applying fluorescent glue on the light-emitting area, the fluorescent glue covers the entire light-emitting area and the light-emitting chip, and the top surface of the fluorescent glue after application is spherical; Step 3), providing a flattening mold, the flattening mold comprising a base and a pressing head that moves up and down relative to the base, the pressing head having a pressing groove with an opening at the bottom, and a horizontally arranged pressing plane at the top of the pressing groove; The substrate after dispensing glue is placed on the base, and the pressure head is driven to move downward until the dam and the light-emitting area are placed in the pressure groove, and the top surface of the fluorescent glue is pressed from top to bottom by the pressure plane until the top surface of the fluorescent glue is pressed to be a flat surface after a set time; The outer periphery of the pressing plane is recessed upward to form a positioning groove with a bottom opening, and the positioning groove is located inside the pressing groove; in the step 3), when the pressing plane moves downward to press against the top surface of the fluorescent glue during the downward deformation, until the upper part of the dam is embedded in the positioning groove, the pressing head stops moving downward; A top slice extending downward is provided at the top of the positioning groove, the top slice is arranged around the circumference of the positioning groove, and a cutting edge is provided at the bottom of the top slice, the cutting edge is located above the bottom opening of the positioning groove; In the step 3), when the upper part of the dam is embedded in the positioning groove, the cutting blade presses downward against the fluorescent glue on the dam and cuts off the fluorescent glue on the dam.

2. The method for flatly dispensing glue for a light source as claimed in claim 1, characterized in that: In the step 3), the pressing head has a horizontally arranged bottom surface, and the bottom surface is arranged at the periphery of the pressing groove; when the dam and the light-emitting area are placed in the pressing groove, the pressing plane presses against the top surface of the fluorescent glue, and then the pressing head continues to move downward until the bottom surface abuts against the substrate.

3. The method for smoothing glue dispensing of a light source as claimed in claim 2, characterized in that: The bottom surface is covered with a horizontally arranged elastic layer. In the step 3), after the bottom surface abuts against the substrate, the pressing head continues to move downward until the elastic layer is pressed and deformed.

4. The method for dispensing glue for a light source as claimed in claim 3, characterized in that: In the step 3), after the elastic layer is deformed by the pressing, the pressing state is maintained unchanged for a set time, and then the pressing head is moved upward to restore the elastic layer to its original state. The elastic layer restored to its original state is maintained in contact with the substrate for a set time, and then the pressing head is moved upward again to release the pressing plane from the top surface of the fluorescent glue.

5. The method for smoothing glue dispensing of a light source as claimed in claim 4, characterized in that: The elastic layer is recessed upward to form a plurality of groove rings, which are nested and arranged in sequence, and are arranged around the outer circumference of the pressing groove; in the step 3), when the elastic layer is pressed against the substrate and deformed, the groove rings are also squeezed and deformed.

6. The method for dispensing glue for a light source as described in any one of claims 1 to 5, characterized in that: Along the top-down direction of the top slice, the middle part of the top slice is bent toward the center position of the pressing plane to form a bent section; in the step 3), when the upper part of the dam is embedded in the positioning groove, the cutting edge of the top slice presses downward against the fluorescent glue on the dam, and the bent section bends and deforms toward the center position of the pressing plane, and the cutting edge deviates away from the center position of the pressing plane and cuts off the fluorescent glue on the dam.

7. The method for dispensing glue for a light source as described in any one of claims 1 to 5, characterized in that: The top of the top slice has an inclined surface, and the bottom of the inclined surface forms the cutting edge along the direction toward the center of the pressing plane. The middle of the inclined surface is provided with an inclined piece arranged downward, and the inclined piece is arranged around the circumference of the top slice, and the inclined piece and the inclined surface are arranged in the same direction of inclination; In the step 3), when the cutting blade is pressed against the fluorescent glue on the dam, the inclined sheet also presses against the fluorescent glue on the dam.

8. The method for smoothing glue dispensing of a light source as described in any one of claims 1 to 5, characterized in that: An enclosing wall extends downward from the top of the positioning groove, and the enclosing wall is arranged along the circumference of the positioning groove, and the enclosing wall encloses the outer periphery of the top slice; the bottom of the enclosing wall extends to below the bottom opening of the positioning groove; In the step 3), after the upper portion of the dam is embedded in the positioning groove, the enclosing wall encloses the outer periphery of the dam and abuts against the outer side wall of the dam.

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