Handheld liquid coating device

Abstract

The utility model relates to the technical field of semiconductor wafer testing, in particular to a handheld liquid coating device which comprises a liquid storage bottle, a liquid outlet cylinder, a switch, a liquid outlet nozzle and a rolling brush, a thread structure is arranged at a bottle opening of the liquid storage bottle, one end of the liquid outlet cylinder is open, and the other end of the liquid outlet cylinder is sealed. A certain number of first liquid outlet holes are formed in the sealed end of the liquid outlet cylinder, the liquid storage bottle is in threaded sealing connection with one end of the liquid outlet cylinder, a switch is arranged at the other end of the liquid outlet cylinder, a certain number of liquid outlet nozzles are further arranged on one side of the switch, and the rolling brush is arranged on one side of the liquid outlet nozzles and can move around a shaft. According to the utility model, a plurality of wafers can be continuously coated on the premise of being filled with fluorination liquid at one time, so that the working efficiency is improved; the extrusion switch controls the liquid amount of the coated fluorinated liquid, the surface of the wafer can be smoothly and uniformly coated by using the rolling brush, and the whole equipment can be arranged in a sealed manner, so that the coating liquid can be prevented from volatilizing; and the liquid storage bottle is provided with a liquid storage mark, so that the use amount of the coating liquid in each bottle can be calculated.

Description

Technical Field

[0001] This utility model relates to the field of semiconductor wafer testing technology, specifically a handheld coating device. Background Technology

[0002] When testing high-voltage electrical parameters of semiconductor wafers, the strong electric field on the chip surface causes air ionization, leading to arcing at the wafer chip terminal. This arcing affects the parameter test results and the reliability of the chip. Therefore, it is necessary to coat the wafer surface with an electronic fluorinated liquid to prevent arcing before testing. The existing coating method involves repeatedly using a small brush to apply a small amount of fluorinated liquid to the wafer surface. This method is inefficient, the amount of coating liquid used is not visible, the amount of coating liquid applied by the brush is difficult to control, the coating thickness is uneven, and the small box containing the coating liquid has an opening, resulting in a lot of coating liquid evaporation. Utility Model Content

[0003] The purpose of this invention is to provide a handheld liquid application device to solve the above problems.

[0004] To achieve the above objectives, the following technical solutions are provided:

[0005] A handheld liquid application device includes: a liquid storage bottle, a liquid dispensing cylinder, a switch, a liquid dispensing nozzle, and a roller brush. The liquid storage bottle has a threaded structure at its mouth. One end of the liquid dispensing cylinder is open, and the other end is sealed. The sealed end of the liquid dispensing cylinder has a certain number of dispensing holes. The liquid storage bottle is threadedly connected to one end of the liquid dispensing cylinder. The other end of the liquid dispensing cylinder has a switch. A certain number of liquid dispensing nozzles are also provided on one side of the switch. The roller brush is located on one side of the liquid dispensing nozzles and can rotate around an axis.

[0006] Preferably, a connecting rod is provided on each side of the liquid outlet cylinder, and one end of the two connecting rods is symmetrically arranged outwards. The ends of the rods are respectively connected to the two ends of the roller brush, and the roller brush can move in a circular motion around the axis.

[0007] Preferably, one of the connecting rods has a limiting block on its inner sidewall for limiting the switch, and the other connecting rod has a limiting groove on its inner sidewall for providing a travel path for the switch and limiting it. The limiting groove also has a stop block in the middle of its inner sidewall for limiting the switch.

[0008] Preferably, the switch includes a squeeze button, a baffle, and a spring. One end of the baffle is fixedly connected to the squeeze button, and the thickness of the baffle is greater than the thickness at the connection point with the squeeze button. The squeeze button passes through a connecting rod with a limiting block and can slide relative to the connecting rod. The spring is located at the other end of the baffle, at the bottom of the limiting groove, and the end of the baffle connected to the spring is located in the limiting groove and can slide relative to it. The baffle is also provided with a certain number of liquid outlet holes II, and each of the liquid outlet holes II has a liquid outlet nozzle on one side.

[0009] Preferably, one side wall of the baffle is sealed and abuts against the sealing end of the liquid outlet cylinder, and the side of the baffle that abuts against the liquid outlet cylinder is also provided with a sealing gasket spaced apart from the liquid outlet hole.

[0010] Preferably, the number of liquid outlet hole one, liquid outlet hole two, and liquid outlet nozzle is the same.

[0011] Preferably, the liquid storage bottle and the liquid dispensing cylinder are made of transparent material, and the liquid storage bottle and the liquid dispensing cylinder are also marked with liquid storage markings.

[0012] The beneficial effects of this utility model are as follows:

[0013] 1. Under the premise of filling the fluorinated liquid once, this utility model can continuously coat multiple wafers, improving work efficiency; the squeeze switch controls the amount of fluorinated liquid to be coated, and the roller brush can be used to smoothly and evenly coat the wafer surface. The entire equipment can be sealed to prevent the coating liquid from evaporating.

[0014] 2. The liquid storage bottle of this utility model is equipped with a liquid storage mark, which can calculate the amount of liquid used in each bottle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the switch structure;

[0017] Figure 3 This is an enlarged schematic diagram of the structure at point A.

[0018] In the picture:

[0019] 1-Storage bottle, 2-Dispensing cylinder, 3-Dispensing hole one, 4-Connecting rod, 5-Squeeze button, 6-Baffle, 7-Sealing gasket, 8-Limiting block, 9-Limiting groove, 10-Stop block, 11-Spring, 12-Dispensing nozzle, 13-Roll brush, 14-Dispensing hole two, 15-Storage mark. Detailed Implementation

[0020] The technical solutions illustrated in the schematic diagrams of the present utility model will be clearly and completely described below with reference to the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] like Figure 1-3 As shown, a handheld liquid application device includes: a liquid storage bottle 1, a liquid dispensing cylinder 2, a switch, a liquid dispensing nozzle 12, and a roller brush 13. The liquid storage bottle 1 has a threaded structure at its mouth. One end of the liquid dispensing cylinder 2 is open, and the other end is sealed. The sealed end of the liquid dispensing cylinder 2 has a certain number of liquid dispensing holes 3, which allow the inside and outside of the liquid dispensing cylinder 2 to pass through. The liquid storage bottle 1 is threadedly sealed to one end of the liquid dispensing cylinder 2. The other end of the liquid dispensing cylinder 2 is equipped with a switch. A certain number of liquid dispensing nozzles 12 are also provided on one side of the switch. Liquid flows through the liquid dispensing nozzles 12 onto the roller brush 13. The roller brush 13 is located on one side of the liquid dispensing nozzles 12 and can rotate around an axis.

[0022] In some embodiments, a connecting rod 4 is provided on each side of the liquid outlet cylinder 2. One end of the two connecting rods 4 is symmetrically arranged outward so that the length of the roller brush 13 can be set according to the size of the wafer. The ends of the roller brush 13 are respectively connected to the two ends of the roller brush 13 shaft, and the roller brush 13 can move in a circular motion around the shaft.

[0023] In some embodiments, a limiting block 8 is provided on the inner side wall of one of the connecting rods 4 to limit the switch, and a limiting groove 9 is provided on the inner side wall of the other connecting rod 4 to provide a travel path for the switch and limit it. A stop block 10 is also provided in the middle of the inner side wall of the limiting groove 9 to limit the switch.

[0024] In some embodiments, the switch includes a squeeze button 5, a baffle 6, and a spring 11. One end of the baffle 6 is fixedly connected to the squeeze button 5, and the thickness of the baffle 6 is greater than the thickness at the connection point with the squeeze button 5. The squeeze button 5 passes through a connecting rod 4 with a limiting block 8 and can slide relative to the connecting rod 4. The spring 11 is located at the other end of the baffle 6, at the bottom of the limiting groove 9, and the end of the baffle 6 connected to the spring 11 is located in the limiting groove 9 and can slide relative to it. The baffle 6 is also provided with a certain number of liquid outlet holes 14, and each liquid outlet hole 14 has an outlet on one side. The nozzle 12; one side wall of the baffle 6 is sealed to the sealing end of the liquid outlet cylinder 2, and the side of the baffle 6 that abuts against the liquid outlet cylinder 2 is also provided with a sealing gasket 7 spaced apart from the second liquid outlet 14; the number of the first liquid outlet 3, the second liquid outlet 14 and the nozzle 12 are the same, and when the switch is pressed, the bottom end of the baffle 6 compresses the spring 11 and abuts against the stop block 10, and the first liquid outlet 3, the second liquid outlet 14 and the nozzle 12 just form a passage. When the switch is released, the spring 11 extends and lifts the switch, the top end of the baffle 6 abuts against the limit block 8, and the sealing gasket 7 just seals against the first liquid outlet 3.

[0025] In some embodiments, both the storage bottle 1 and the dispensing cylinder 2 are made of transparent material, allowing the liquid level inside the storage bottle 1 to be seen through the bottle body. The storage bottle 1 and the dispensing cylinder 2 are also provided with storage marks 15, which can be used to calculate the amount of liquid used.

[0026] Example:

[0027] Before coating, pour the electronic fluorinated liquid into the storage bottle 1 and tighten the threaded thread at the mouth of the storage bottle 1. When coating, invert the device and press the squeeze switch. The electronic fluorinated liquid flows from the nozzle onto the surface of the roller brush 13. The roller brush 13 rolls on the wafer surface under the drive of the connecting rod 4 to complete the coating operation.

Claims

1. A handheld liquid application device, characterized in that, include: The liquid storage bottle comprises a liquid dispensing cylinder, a switch, a dispensing nozzle, and a roller brush. The liquid storage bottle has a threaded structure at its mouth. One end of the liquid dispensing cylinder is open, and the other end is sealed. The sealed end of the liquid dispensing cylinder has a certain number of dispensing holes. The liquid storage bottle is threadedly connected to one end of the liquid dispensing cylinder. The other end of the liquid dispensing cylinder has a switch. A certain number of dispensing nozzles are also provided on one side of the switch. The roller brush is located on one side of the dispensing nozzles and can rotate around an axis.

2. The handheld liquid application device according to claim 1, characterized in that, A connecting rod is provided on each side of the liquid outlet cylinder. One end of the two connecting rods is symmetrically arranged outwards, and their ends are respectively connected to the two ends of the roller brush. The roller brush can make a circular motion around the axis.

3. The handheld liquid application device according to claim 2, characterized in that, One of the connecting rods has a limiting block on its inner side wall for limiting the switch, and the other connecting rod has a limiting groove on its inner side wall for providing a path for the switch and limiting its movement. The limiting groove also has a stop block in the middle of its inner side wall for limiting the switch.

4. A handheld liquid application device according to claim 1 or 3, characterized in that, The switch includes a squeeze button, a baffle, and a spring. One end of the baffle is fixedly connected to the squeeze button. The thickness of the baffle is greater than the thickness at the connection point with the squeeze button. The squeeze button passes through a connecting rod with a limiting block and can slide relative to the connecting rod. The spring is located at the other end of the baffle, at the bottom of the limiting groove. The end of the baffle connected to the spring is located in the limiting groove and can slide relative to it. The baffle is also provided with a certain number of liquid outlet holes, and each liquid outlet hole has a liquid nozzle on one side.

5. A handheld liquid application device according to claim 4, characterized in that, One side wall of the baffle is sealed and abuts against the sealing end of the liquid outlet cylinder, and the side of the baffle that abuts against the liquid outlet cylinder is also provided with a sealing gasket spaced apart from the liquid outlet hole.

6. A handheld liquid application device according to claim 5, characterized in that, The number of liquid outlet hole one, liquid outlet hole two and liquid outlet nozzle is the same.

7. A handheld liquid application device according to claim 1, characterized in that, Both the storage bottle and the dispensing cylinder are made of transparent material, and the storage bottle and the dispensing cylinder are also marked with storage marks.

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