Scraping device applied to LED chip

Abstract

The utility model discloses a doctor blade device applied to an LED chip, and relates to the technical field of semiconductors, the doctor blade device is applied to an ejector pin device, the ejector pin device comprises a machine body, the LED chip and an ejector pin, the LED chip comprises a chip body and a fluorescent film, the doctor blade device is arranged between the LED chip and the ejector pin, the doctor blade device comprises a sliding doctor blade and an elastic piece, and the elastic piece is arranged on the machine body. The sliding scraping piece is connected into the machine body in a sliding mode and connected with the machine body through an elastic piece, the sliding scraping piece is provided with a scraping piece part and an inclined part opposite to the ejector pin, the inclined part abuts against the ejector pin, and the scraping piece part right faces one edge of the fluorescent film and extends out by at least a part of distance in the height direction of the fluorescent film. The fluorescent film can be scraped from the chip body, and the technical problem that the chip body is scraped and bent can be solved.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor technology, specifically to a scraping device for LED chips. Background Technology

[0002] In the LED chip packaging process, it is necessary to separate the phosphor film located at the bottom of the chip body from the chip body. For this purpose, a ejector device is required. The ejector device includes a chip processing body, ejector pins arranged in the body, and a lifting drive component for driving the ejector pins to move up and down.

[0003] One end of the ejector pin is connected to the lifting drive unit inside the machine body, and the other end is directly opposite the middle of the fluorescent film. The ejector pin is driven to move up and down by the lifting drive unit, so that the ejector pin can be embedded in the fluorescent film. During the upward movement of the ejector pin, the upper surface of the chip body is fixed by the suction nozzle device. After the ejector pin is embedded in the fluorescent film, the chip body is moved by the suction nozzle device, so that the chip body is separated from the fluorescent film.

[0004] Please refer to the accompanying drawings in the instruction manual. Figure 5 As shown, because the fluorescent film is relatively soft and thin, the ejector pin can easily damage the chip body on top of the fluorescent film during its upward movement, resulting in scratches and bending of the chip body. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide a scraping device for LED chips to solve the technical problem that the existing separation methods of phosphor film and chip body in the background art are prone to causing scratches and bending of the chip body.

[0006] The present invention provides a scraping device for LED chips. The scraping device is applied in a ejector device. The ejector device includes a body, an LED chip for placing on the body, and an ejector pin that is raised and lowered in the body. The LED chip includes a chip body and a fluorescent film disposed below the chip body.

[0007] The scraper device is disposed between the LED chip and the ejector pin. The scraper device includes a sliding scraper and an elastic element. The sliding scraper is slidably connected to the body of the machine. One end of the elastic element is connected to the interior of the machine and the other end is connected to the sliding scraper.

[0008] The sliding scraper has a scraping portion and an inclined portion opposite to the ejector pin. The inclined portion abuts against the ejector pin. The scraping portion faces one edge of the fluorescent film and extends at least a certain distance in the height direction of the fluorescent film. When the ejector pin moves up and down, the ejector pin slides along the inclined surface of the inclined portion, causing the sliding scraper to slide so as to scrape the fluorescent film from the chip body through the scraping portion.

[0009] Furthermore, the sliding scraper also includes a support portion, which is connected to the elastic element.

[0010] Furthermore, the two ends of the elastic element are fixedly connected to the interior of the machine body and the support portion, respectively.

[0011] Furthermore, the scraper portion is located on one side of the support portion, and the inclined portion is located on the other side of the support portion.

[0012] Furthermore, the inclined portion and the scraper portion are not collinear.

[0013] Furthermore, the sliding scraper includes at least two scraper portions, and the two scraper portions are respectively disposed on the same side of the support portion at both edges.

[0014] Furthermore, the two scraper blades are arranged opposite to each other, and there is a gap between the two scraper blades.

[0015] Furthermore, the scraper portion is inclined on the side facing the fluorescent film, and the scraper portion is straight on the side facing the chip.

[0016] Furthermore, a portion of the ejector pin extends from one end near the inclined portion to the other end, gradually increasing in size, to form a guide end at one end of the ejector pin that corresponds to the inclined portion.

[0017] Furthermore, the sliding direction of the sliding scraper is consistent with the length direction of the fluorescent film.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In the scraping device for LED chips provided by this utility model, a scraping device is set between the LED chip and the ejector pin. When the ejector pin moves up and down, the inclined part on the sliding scraper abuts against the ejector pin. During the upward movement of the ejector pin, the end of the ejector pin slides on the inclined surface of the inclined part, allowing the sliding scraper to move. Finally, by setting the scraper part to face one edge of the fluorescent film, the scraper part can scrape the fluorescent film from the chip body when it moves, achieving the purpose of separating the chip body and the fluorescent film. Furthermore, the scraper part in this application extends at least a certain distance towards the height direction of the fluorescent film, and this distance is limited to the height range of the fluorescent film. This allows the scraper part to avoid direct contact with the chip body when scraping the fluorescent film, solving the technical problems of chip body scratching and bending. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the scraping device applied to LED chips in one embodiment of the present invention;

[0021] Figure 2 for Figure 1 Enlarged schematic diagram of part A;

[0022] Figure 3 This is a perspective view of the sliding scraper in one embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the working state of the scraping device applied to LED chips in one embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of an ejector pin device in the prior art.

[0025] In the figure: 100, scraper device; 110, sliding scraper; 111, scraper part; 112, inclined part; 113, support part; 120, elastic element; 200, ejector pin device; 210, body; 220, LED chip; 221, chip body; 222, fluorescent film; 230, ejector pin; 231, guide end. Detailed Implementation

[0026] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Several embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of this utility model will be more thorough and complete.

[0027] It should be noted that when a component is said to be "fixed to" another component, it can be directly on the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please refer to Figure 5, which shows a prior art ejector device 200, including a body 210 and an ejector pin 230 that is raised and lowered within the body 210. One end of the ejector pin 230 faces the LED chip 220. When the ejector pin 230 moves up and down, it directly pushes into the phosphor film 222 of the LED chip 220, causing the chip body 221 and the phosphor film 222 to separate. It should be noted that the upper surface of the chip body 221 is fixed and moved by an external suction nozzle. Since the suction nozzle is prior art, it is not described in this embodiment and the accompanying drawings.

[0030] However, the existing method of separating the fluorescent film 222 and the chip body 221 by the ejector pin 230 is prone to technical problems such as scratches and bending of the chip body 221.

[0031] Please see Figures 1 to 4 The image shows a scraping device for LED chips in one embodiment of the present invention. The ejector device 200 includes a body 210, an LED chip 220 for resting on the body 210, and an ejector 230 that is raised and lowered in the body 210. The LED chip 220 includes a chip body 221 and a fluorescent film 222 disposed below the chip body 221.

[0032] The scraper device 100 is located between the LED chip 220 and the ejector pin 230. The scraper device 100 includes a sliding scraper 110 and an elastic element 120. The sliding scraper 110 is slidably connected to the inside of the machine body 210. One end of the elastic element 120 is connected to the inside of the machine body 210, and the other end is connected to the sliding scraper 110.

[0033] The sliding scraper 110 has a scraper portion 111 and an inclined portion 112 disposed opposite to the ejector pin 230. The inclined portion 112 abuts against the ejector pin 230. The scraper portion 111 faces one edge of the fluorescent film 222 and extends at least a certain distance in the height direction of the fluorescent film 222. When the ejector pin 230 moves up and down, the ejector pin 230 slides along the inclined surface of the inclined portion 112, so that the sliding scraper 110 slides to scrape the fluorescent film 222 from the chip body 221 through the scraper portion 111.

[0034] In other words, in this embodiment, by providing a scraper device 100 between the LED chip 220 and the ejector pin 230, when the ejector pin 230 is moving up and down, the inclined portion 112 on the sliding scraper 110 abuts against the ejector pin 230. During the upward movement of the ejector pin 230, the end of the ejector pin 230 slides on the inclined surface of the inclined portion 112, allowing the sliding scraper 110 to move. Finally, by setting the scraper portion 111 directly opposite one edge of the fluorescent film 222, the scraper portion 111 can scrape the fluorescent film 222 from the chip body 221 when it moves, thereby achieving the purpose of separating the chip body 221 and the fluorescent film 222. Furthermore, the scraper portion 111 in this application extends at least a certain distance towards the height direction of the fluorescent film 222, and this distance is limited to the height range of the fluorescent film 222. This allows the scraper portion 111 to avoid direct contact with the chip body 221 when scraping the fluorescent film 222, thus solving the technical problems of scratching and bending of the chip body 221.

[0035] In some preferred embodiments, the sliding scraper 110 further includes a support portion 113, which is connected to the elastic member 120. Specifically, the scraper portion 111 is disposed on one side of the support portion 113, and the inclined portion 112 is disposed on the other side of the support portion 113. The inclined portion 112 and the scraper portion 111 are not collinear. The two ends of the elastic member 120 are fixedly connected to the interior of the machine body 210 and the support portion 113, respectively. Through the fixed connection, the stability of the connection between the elastic member 120 and the sliding scraper 110 and the interior of the machine body 210 is ensured.

[0036] To ensure the smooth scraping of the fluorescent film 222, in some other preferred embodiments, the sliding scraper 110 includes at least two scraper portions 111, and the two scraper portions 111 are respectively disposed on the two edges of the same side of the support portion 113. By providing at least two scraper portions 111, the fluorescent film 222 can be scraped simultaneously from both ends of one edge.

[0037] In addition, to reduce the cost of the scraper device 100, the two scraper sections 111 are arranged opposite each other, and there is a gap between the two scraper sections 111.

[0038] The scraper portion 111 is inclined on the side facing the fluorescent film 222, and the scraper portion 111 is straight on the side facing the chip. This straightness avoids the disadvantage of having a sharp point on the sliding scraper 110, which could scratch the chip body 221.

[0039] Furthermore, a portion of the ejector pin 230 extends from the small end to the large end near the inclined portion 112 to form a guide end 231 corresponding to the inclined portion 112 at one end of the ejector pin 230, and the sliding direction of the sliding scraper 110 is consistent with the length direction of the fluorescent film 222.

[0040] In summary, the scraping device for LED chips shown in this embodiment has at least the following advantages compared with the ejector pin device in the prior art:

[0041] In the scraping device for LED chips provided by this utility model, by setting a scraping device 100 between the LED chip 220 and the ejector pin 230, when the ejector pin 230 is moving up and down, the inclined portion 112 on the sliding scraper 110 abuts against the ejector pin 230. During the upward movement of the ejector pin 230, the end of the ejector pin 230 slides on the inclined surface of the inclined portion 112, allowing the sliding scraper 110 to move. Finally, the scraper portion 111 is positioned opposite one edge of the fluorescent film 222. This allows the scraper portion 111 to scrape the fluorescent film 222 from the chip body 221 when it moves, thereby achieving the purpose of separating the chip body 221 and the fluorescent film 222. Furthermore, the scraper portion 111 in this application extends at least a certain distance toward the height direction of the fluorescent film 222, and this certain distance is limited to the height range of the fluorescent film 222. This allows the scraper portion 111 to avoid direct contact with the chip body 221 when scraping the fluorescent film 222, thus solving the technical problems of scratching and bending of the chip body 221.

[0042] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0043] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A scraping device for LED chips, characterized in that, The scraper device is used in the ejector device, which includes a body, an LED chip for placing on the body, and an ejector pin that is raised and lowered in the body. The LED chip includes a chip body and a fluorescent film disposed below the chip body. The scraper device is disposed between the LED chip and the ejector pin. The scraper device includes a sliding scraper and an elastic element. The sliding scraper is slidably connected to the body of the machine. One end of the elastic element is connected to the interior of the machine and the other end is connected to the sliding scraper. The sliding scraper has a scraping portion and an inclined portion opposite to the ejector pin. The inclined portion abuts against the ejector pin. The scraping portion faces one edge of the fluorescent film and extends at least a certain distance in the height direction of the fluorescent film. When the ejector pin moves up and down, the ejector pin slides along the inclined surface of the inclined portion, causing the sliding scraper to slide so as to scrape the fluorescent film from the chip body through the scraping portion.

2. The scraping device for LED chips according to claim 1, characterized in that, The sliding scraper also includes a support portion, which is connected to the elastic element.

3. The scraping device for LED chips according to claim 2, characterized in that, The two ends of the elastic element are fixedly connected to the interior of the machine body and the support part, respectively.

4. The scraping device for LED chips according to claim 2, characterized in that, The scraper portion is located on one side of the support portion, and the inclined portion is located on the other side of the support portion.

5. The scraping device for LED chips according to claim 2, characterized in that, The inclined portion and the scraper portion are not collinear.

6. The scraping device for LED chips according to claim 2, characterized in that, The sliding scraper includes at least two scraper portions, and the two scraper portions are respectively disposed on the two edges of the same side of the support portion.

7. The scraping device for LED chips according to claim 6, characterized in that, The two scraper blades are arranged opposite to each other, and there is a gap between the two scraper blades.

8. The scraping device for LED chips according to claim 1, characterized in that, The scraper portion is inclined on the side facing the fluorescent film, and the scraper portion is straight on the side facing the chip.

9. The scraping device for LED chips according to claim 1, characterized in that, The ejector pin has a portion of its dimensions extending from small to large at one end near the inclined portion to the other end, so as to form a guide end at one end of the ejector pin that corresponds to the inclined portion.

10. The scraping device for LED chips according to claim 1, characterized in that, The sliding direction of the sliding scraper is consistent with the length direction of the fluorescent film.

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