TWM499556U - Carrying board and optical inspection apparatus comprising carrying board - Google Patents

Description

Carrier board and optical detecting device having the same

The present invention relates to a carrier board and an optical detecting device having the same, which is used for mounting on a vacuum table of an optical detecting device for carrying, for example, a hard board or a soft board waiting for a measuring board, the optical detecting apparatus A circuit pattern for detecting the surface of the board to be tested.

In the production line of the circuit board, in order to detect defects on the circuit board early, an optical detecting device is used to detect the circuit pattern on the surface of the circuit board, mainly using image processing technology, compared with the surface image of the circuit board to be measured and the standard image. Difference, to determine whether there is a defect in the surface of the board to be tested (for example, foreign matter or circuit pattern is abnormal).

The conventional optical detecting device has a vacuum table, a pumping device and an image capturing device, and carries a circuit board to be tested by a vacuum table. The top surface of the vacuum table has a recessed receiving groove on the bottom surface of the receiving groove. A plurality of suction holes are arranged, and the vacuum table is connected to the air suction device. When the detection is performed, the air suction device is activated and evacuated, and the circuit board to be tested is sucked through the suction holes. The device takes the image of the circuit board to be tested, and after image processing and comparison analysis, it can detect whether there is a defect on the surface of the circuit board.

In the conventional optical detecting device, the circuit board to be tested is positioned and positioned by the side of the receiving slot to be aligned and processed for subsequent image taking and processing analysis. However, the conventional optical detecting device has a limitation on the size of the detectable circuit board, because the size of the receiving groove limits the maximum size of the detectable circuit board (for example, 24*26 吋), which is unfavorable for the factory. Expanded applications of existing machines. In addition, the vacuum table of the conventional optical detecting device has a large aperture and a low area density, so that when the horsepower of the air suction device is improperly controlled, the suction of the suction holes is excessive, and the adsorbed circuit board is easily deformed. And damaged.

One of the aims of the present invention is to improve the size of the detectable circuit board due to the size of the receiving groove of the vacuum table, and the large aperture of the vacuum table and the low area density may cause the circuit board to be easily deformed. And the problem of damage.

For the above purposes and other purposes, the present invention provides a carrier board for use on a vacuum table of an optical inspection device for carrying a board to be tested, the vacuum table having a receiving slot for receiving the carrier board The bottom surface of the accommodating groove has a plurality of vacuum adsorption holes, wherein the carrier plate has a plurality of through holes, each of the vacuum adsorption holes being corresponding to at least one of the through holes, each of the holes The aperture of the through hole is smaller than the aperture of each of the vacuum adsorption holes, and the thickness of the carrier plate is equal to the depth of the receiving groove.

In the above carrier board, each of the through holes has a pore diameter of 0.5 to 1.5 mm.

In the above-mentioned carrier sheet, the diameter of each of the through holes is 1 mm.

The above-mentioned carrier sheet, wherein the through holes are arranged at an area density of at least 10 per square centimeter.

In the above-mentioned carrier board, the through holes are arranged in a plurality of rows, and the spacing of any two through holes in each row is the same.

For the above purposes and other purposes, the present invention provides an optical detecting device for detecting a circuit pattern on a board to be tested, the optical detecting device comprising a vacuum table, an air extracting device and an image capturing device, wherein The vacuum stage has a receiving groove and a pumping chamber. The receiving groove is formed on the top of the vacuum table and has a plurality of vacuum adsorption holes, and the receiving groove passes through the vacuum adsorption holes and the pumping chamber. Connected, the air extracting device is connected to the pumping chamber to pump the air pumping chamber, and the image capturing device is directly facing the vacuum table, and the optical detecting device further comprises the above-mentioned carrier board, the carrier board is disposed on The accommodating groove is configured to carry the board to be tested thereon.

In the above optical detecting device, the vacuum table is provided with a plurality of positioning strips around the receiving groove for positioning the board to be tested.

In summary, the above-mentioned carrier board enables the optical detecting device to be applied to a larger-sized board to be tested, and since all vacuum suction holes on the vacuum table are corresponding to the through-holes of the carrier board, and the same The holes are arranged evenly and tightly, and the flatness and the fit of the test plate can be improved.

In order to fully understand the purpose, features and effects of this creation, the following specific examples, together with the attached drawings, provide a detailed description of the creation, as explained below:

1 to 4 are diagrams for explaining the present embodiment, and the ratios shown in the drawings are not actual ratios, and the structures and proportions shown in the drawings are only for explaining the technical contents of the present creation.

Referring to FIG. 1 , the present embodiment relates to an optical detecting apparatus 100 for detecting a circuit pattern of a hard board or a soft board waiting for a surface of the measuring board, which is a surface image of the board to be tested. After that, the image of the captured image is processed and judged, and the surface of the board to be tested can be detected whether there is foreign matter or abnormal pattern.

As shown in FIG. 1, the optical detecting device 100 includes a vacuum table 20, an air extracting device 30, and an image capturing device 40. In addition, the optical detecting device 100 further has a display screen 50 and peripheral devices (keyboard 60a and sliding). Mouse 60b, etc., system host (not shown), sensing mechanism (not shown) and drive mechanism (not shown).

Referring to FIG. 2 and FIG. 3 , the vacuum table 20 has a receiving groove 21 and a pumping chamber 22 . The receiving groove 21 is formed on the top of the vacuum table 20 and has a plurality of vacuum adsorption holes 23 . The trough 21 is connected to the pumping chamber 22 through the vacuum suction holes 23, and the air extracting device 30 is connected to the pumping chamber to evacuate the pumping chamber 22. The image capturing device 40 is directly Vacuum table 20.

A carrier board 10 is detachably disposed in the accommodating slot 21 for carrying the image to be tested 200 thereon, so that the image capturing device 40 captures an image of the surface of the panel 200 to be tested. The carrier plate 10 has a plurality of through holes 11 , each of the vacuum adsorption holes 23 corresponding to at least one of the through holes 11 , and each of the through holes 11 has a smaller aperture than each of the vacuum adsorption holes 23 . The aperture, that is, a vacuum adsorption hole 23, is correspondingly connected to the one or more through holes 11; and the thickness of the carrier plate 10 is equal to the depth of the accommodating groove 21, and therefore, the surface of the carrier plate 10 and the accommodating groove 21 The surrounding surface is flush, and the larger panel 200 to be tested (for example, 24*32 inch or larger) can be extended to the surface around the accommodating groove 21.

In this embodiment, the “the thickness of the carrier plate 10 is equal to the depth of the accommodating slot 21”, where “equal to” includes the error of the size when manufacturing the carrier 10, that is, the carrier 10 The thickness is substantially equal to the depth of the accommodating groove 21.

In this embodiment, the air pumping device 30 can include a vacuum pump 31 and a pipeline 32. The pipeline 32 is connected to the vacuum pump 31 and the pumping chamber 22 of the vacuum table 20. The pumping chamber 22 is evacuated through the line 32.

In this embodiment, the image capturing device 40 can include a camera, a light source module, and the like. The light source module irradiates light onto the surface of the board to be tested 200, and the camera captures an image of the surface of the board 200 to be tested.

In addition, the vacuum table 20 can be provided with a plurality of positioning strips 24 around the accommodating groove 21, and each of the positioning strips 24 protrudes from the surface around the accommodating groove for accommodating the board to be tested 200. For positioning, the positioning strips 24 can be assembled on the surface around the receiving groove by screws or adhesives, and the number or position can be configured according to requirements (for example, the size of the board to be tested 200).

As shown in FIG. 4, in the carrier 10 of the embodiment, the diameter D of each of the through holes 11 may be 0.5-1.5 mm, and preferably, the through-hole 11 has a hole diameter of 1 mm. Moreover, the through holes 11 are arranged in a plurality of rows, and the spacing of any two through holes 11 in each row is the same, and the through holes 11 are arranged on the carrier plate 10 at an area density of at least 10 per square centimeter. . Therefore, since the area density of the through holes 11 is high and evenly distributed, and all the vacuum adsorption holes 23 on the vacuum table 20 are in communication with the through holes 11 of the carrier plate 10, when the air suction device 30 is drawn When the gas is gas, the suction force of the plate 200 to be tested on the surface of the carrier plate 10 is evenly distributed, and the adsorption area is increased, thereby improving the flatness and the fit of the board to be tested 200.

In summary, the carrier board 10 of the present embodiment can be applied to the larger size of the board to be tested 200, and all the vacuum suction holes 23 on the vacuum table 20 are connected to the through holes of the carrier board 10. 11 is connected and connected, and the through holes 11 are evenly arranged and compacted, thereby improving the flatness and the fit of the board to be tested 200.

The present invention has been disclosed in the above preferred embodiments, and it should be understood by those skilled in the art that the present invention is only intended to depict the present invention and should not be construed as limiting the scope of the present invention. It should be noted that variations and permutations equivalent to those of the embodiments are intended to be included within the scope of the present invention. Therefore, the scope of protection of this creation is subject to the definition of the scope of patent application.

10‧‧‧Bearing board
11‧‧‧through hole
20‧‧‧vacuum table
21‧‧‧ accommodating slots
22‧‧‧Exhaust chamber
23‧‧‧Vacuum adsorption holes
24‧‧‧Positioning strip
30‧‧‧Exhaust device
31‧‧‧vacuum pump
32‧‧‧ pipeline
40‧‧‧Image capture device
50‧‧‧ Display screen
60a‧‧‧ keyboard
60b‧‧‧mouse
100‧‧‧Optical testing equipment
200‧‧‧Test board
D‧‧‧ aperture

Fig. 1 is a schematic view showing an optical detecting apparatus of the present embodiment. 2 is a schematic structural view of a vacuum table and a carrier plate in the present embodiment. [Fig. 3] is a schematic view showing the optical detecting device of the present embodiment for detecting a board to be tested. FIG. 4 is a schematic structural view of a carrier board according to the present embodiment.

10‧‧‧Bearing board

11‧‧‧through hole

20‧‧‧vacuum table

22‧‧‧Exhaust chamber

23‧‧‧Vacuum adsorption holes

24‧‧‧Positioning strip

30‧‧‧Exhaust device

31‧‧‧vacuum pump

32‧‧‧ pipeline

40‧‧‧Image capture device

200‧‧‧Test board

Claims (7)

A carrier plate for use on a vacuum table of an optical detecting device for carrying a board to be tested, the vacuum table having a receiving groove for receiving the carrier plate, the bottom surface of the receiving groove having a plurality of vacuum adsorption The hole is characterized in that: the carrier plate has a plurality of through holes, each of the vacuum adsorption holes is corresponding to at least one of the through holes, and each of the through holes has a smaller aperture than each of the vacuum adsorption holes. The aperture is, and the thickness of the carrier plate is equal to the depth of the accommodating groove. The carrier sheet according to Item 1, wherein each of the through holes has a pore diameter of 0.5 to 1.5 mm. The carrier sheet of claim 1, wherein each of the through holes has a pore size of 1 mm. The carrier sheet of claim 1, 2 or 3, wherein the through holes are arranged at an area density of at least 10 per square centimeter. The carrier board of claim 4, wherein the through holes are arranged in a plurality of rows, and the spacing of any two through holes in each row is the same. An optical detecting device for detecting a circuit pattern on a board to be tested, the optical detecting device comprising a vacuum table, an air extracting device and an image capturing device, wherein the vacuum table has a receiving groove and a pumping device a gas chamber, the accommodating groove is formed on the top of the vacuum table and has a plurality of vacuum adsorption holes, the accommodating groove is communicated with the suction chamber through the vacuum adsorption holes, and the air suction device is connected to the air suction chamber The image capturing device is in the form of a carrier plate according to any one of claims 1 to 5, wherein the image capturing device is in the form of a carrier plate according to any one of claims 1 to 5, The carrying board is disposed in the receiving slot for carrying the board to be tested thereon. The optical detecting device of claim 6, wherein the vacuum table is provided with a plurality of positioning strips around the receiving slot for positioning the panel to be tested.