CN217638649U

CN217638649U - Automatic light sensing device of chip discernment

Info

Publication number: CN217638649U
Application number: CN202221075417.0U
Authority: CN
Inventors: 周建华; 刘晓丽; 易巨荣; 张振强
Original assignee: Guangdong Tianji Optoelectronics Co ltd
Current assignee: Guangdong Tianji Optoelectronics Co ltd
Priority date: 2022-05-06
Filing date: 2022-05-06
Publication date: 2022-10-21
Anticipated expiration: 2032-05-06

Abstract

The utility model relates to a chip identification equipment technical field discloses an automatic light sense device of chip identification, including treater, camera, detection platform, first light source and second light source, the treater is connected with the camera electricity, and camera, first light source and second light source are located the top of detecting the platform respectively, and the illumination zone of first light source on detecting the platform overlaps with the illumination zone of second light source on detecting the platform, and the colour of first light source is different with the colour of second light source. The utility model discloses the possibility that misjudgement appears when effectively reducing the detection, detection efficiency is high, the precision is high.

Description

Automatic light sense device of chip discernment

Technical Field

The utility model relates to a chip identification equipment technical field especially relates to an automatic light sense device of chip identification.

Background

The quality of the LED chip directly determines the performance of the LED. In the previous process of manufacturing the LED, complicated processing steps such as cleaning, evaporation, yellow light, chemical etching, etc. cannot avoid the chip from generating defects. For example, in the evaporation process, the chip is fixed by using a spring clamp to generate clamp marks; in the yellow light operation, if the development is incomplete or the mask has a hole, the light emitting area of the chip will have residual metal. Therefore, in order to ensure the quality of the chip, the defect detection needs to be performed on the LED chip in the previous manufacturing process of the LED, so that the product yield of the subsequent manufacturing process is ensured, and the production benefit is improved.

In order to improve the detection efficiency of the LED chip, a visual detection method is adopted, namely a light source is used for irradiating the detected LED chip, a camera is used for shooting the detected LED chip, then an image shot by the camera is transmitted to a processor for analysis and judgment (compared with a qualified chip image), so that the detection is realized, however, in the existing detection method, only one light source is generally arranged, and the relative positions of different LED chips and the light source are not completely consistent during the detection, so that the reflection condition of the LED chip to the light source is influenced, the image shot by the camera and irradiated on the LED chip by the light source is influenced, the possibility of misjudgment exists, and the detection accuracy is influenced.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to provide an automatic light sense device of chip identification that detection efficiency is high, the precision is high.

In order to realize the above object, the utility model provides an automatic light sense device of chip discernment, include treater, camera, examine test table, first light source and second light source, the treater with the camera electricity is connected, the camera first light source with the second light source is located respectively examine the top of test table, first light source is in examine the illumination zone on the test table with the second light source is in examine the illumination zone overlap on the test table, the colour of first light source with the colour of second light source is different.

As the utility model discloses a preferred scheme, first light source is followed the periphery setting of camera, the camera with the vertical orientation of first light source examine test table, second light source slope orientation examine test table.

As the utility model discloses an optimal scheme, the automatic light sense device of chip discernment still includes the mount, the mount includes first dead lever, connecting rod and second dead lever, the connecting rod with the lateral part of first dead lever is connected, the second dead lever with the connecting rod is connected, the camera with first light source is installed the bottom of first dead lever, the second light source is installed the bottom of second dead lever.

As the utility model discloses an optimal scheme, the cover is equipped with on the first dead lever with but first dead lever rotary fit's adapter sleeve, the connecting rod with adapter sleeve fixed connection, be equipped with the restriction on the adapter sleeve pivoted first locking piece.

As a preferred scheme of the utility model, the second dead lever with the connecting rod rotates to be connected, the second dead lever is equipped with the restriction second dead lever pivoted second locking piece.

As the preferred scheme of the utility model, the camera is the CCD camera.

As the preferred scheme of the utility model, first dead lever is the telescopic link of scalable regulation.

As the utility model discloses a preferred scheme, but it is horizontal and longitudinal movement's diaxon moving platform to examine test table.

The embodiment of the utility model provides an automatic light sense device of chip discernment, compared with the prior art, its beneficial effect lies in: during detection, the camera is positioned above the LED chip so as to clearly shoot the LED chip; during detection, if the image of the LED chip irradiated by the first light source shot by the camera is judged to be unqualified, the image of the LED chip irradiated by the second light source can be shot by the camera, and because the color of the first light source is different from that of the second light source, the reflection conditions of the LED chip on the two light sources are different, so that the two times of shooting are different, namely, the two times of re-detection are repeated, the possibility of misjudgment as unqualified is reduced, the possibility of misjudgment caused by the position of the LED chip is effectively reduced, and the detection accuracy is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a schematic bottom structure view of the first fixing rod of the present invention;

fig. 3 is a schematic bottom structure view of the second fixing rod of the present invention;

in the figure, 1, a camera; 2. a detection table; 3. a first light source; 4. a second light source; 5. a fixed mount; 51. a first fixing lever; 511. connecting sleeves; 512. a first locking member; 52. a connecting rod; 53. a second fixing bar; 531. a second lock member.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1-3, the utility model discloses an automatic light sense device of chip identification of preferred embodiment, including the treater (not drawn in the figure), camera 1, examine test table 2, first light source 3 and second light source 4, the treater is connected with camera 1 electricity, camera 1, first light source 3 and second light source 4 are located respectively and are examined test table 2's top, first light source 3 sets up along camera 1's periphery, specifically first light source 3 sets up around camera 1's camera lens a week, camera 1 and the vertical orientation of first light source examine test table 2, second light source 4 inclines to examine test table 2, the illumination zone of first light source 3 on examining test table 2 overlaps with the illumination zone of second light source 4 on examining test table 2, the colour of first light source 3 is different with the colour of second light source 4, the colour of first light source 3 is red in this embodiment, the colour of second light source 4 is green.

The working principle of the embodiment is as follows: firstly, a wafer provided with a plurality of LED chips is placed on a detection table 2, before detection, one LED chip is arranged in the middle of the irradiation area (namely, the detection area) of a first light source 3 and a second light source 4 by moving the detection table 2, and at the moment, a camera 1 is positioned above the LED chip so as to clearly shoot the LED chip; during detection, firstly, the first light source 3 emits light to irradiate the LED chip, the second light source 4 does not emit light, the camera 1 shoots images and transmits the images to the processor, the processor analyzes and judges the images, if the images are judged to be qualified, the detection of the LED chip is finished, if the images are judged to be unqualified, the first light source 3 is controlled not to emit light, the second light source 4 emits light to irradiate the LED chip, the camera 1 shoots images again and transmits the images to the processor, the processor analyzes and judges the images shot again, if the images are judged to be qualified, the detection result of the LED chip is still qualified, if the images are judged to be unqualified, the detection result of the LED chip is unqualified, namely, if the detection result of the first shooting is unqualified, the shooting is carried out again, and the detection is carried out again, because the color of the first light source is different from the color of the second light source, the reflection conditions of the two light sources of the LED chip are different, the conditions of the two shooting are different, which are equivalent to more than once re-detection, the possibility of erroneous judgment caused by the position of the LED chip is reduced, and the detection accuracy is improved.

Exemplarily, the first light source 3 is arranged along the periphery of the camera 1, the camera 1 and the first light source 3 are vertically oriented to the detection table 2 so as to clearly shoot the LED chip to be detected, the second light source 4 is inclined and oriented to the detection table 2, that is, the orientation of the first light source 3 is different from the orientation of the second light source 4, on one hand, the arrangement is convenient, on the other hand, the two-time shooting condition is more different, so as to ensure that when the first-time shooting detection judgment result is misjudgment, the second-time shooting detection judgment result is not misjudgment, and the detection accuracy is ensured.

Exemplarily, the automatic light sensing device for chip recognition further comprises a fixing frame 5, the fixing frame 5 comprises a first fixing rod 51, a connecting rod 52 and a second fixing rod 53, the connecting rod 52 is connected with the side portion of the first fixing rod 51, the second fixing rod 53 is connected with the connecting rod 52, the camera 1 and the first light source 3 are installed at the bottom of the first fixing rod 51, the second light source 4 is installed at the bottom of the second fixing rod 53, and the camera 1, the first light source 3, the second light source 4 and the fixing frame 5 are connected into a whole, so that the structure is stable and the adjustment is convenient.

Illustratively, the first fixing rod 51 is sleeved with a connecting sleeve 511 which is rotatably matched with the first fixing rod 51, the connecting rod 52 is fixedly connected with the connecting sleeve 511, the connecting sleeve 511 is rotated to enable the second fixing rod 53 and the second light source 4 to rotate around the axis of the first fixing rod 51, so as to adjust the irradiation area of the second light source 4, the connecting sleeve 511 is provided with a first locking piece 512 which limits the rotation of the connecting sleeve 511, so as to prevent the connecting sleeve 511 from accidentally rotating during the detection process, in the embodiment, the first locking piece 512 is a fastening bolt, and when the fastening bolt is in a fastening state, the fastening bolt penetrates through the side wall of the connecting sleeve 511 to abut against the side part of the first fixing rod 51, so as to limit the rotation of the connecting sleeve 511.

Illustratively, the second fixing rod 53 is rotatably connected to the connecting rod 52 so as to adjust an inclination angle of the second fixing rod 53, thereby adjusting an irradiation direction and an irradiation area of the second light source 4, the second fixing rod 53 is provided with a second locking member 531 for limiting rotation of the second fixing rod 53, thereby avoiding accidental rotation of the second fixing rod 53 during detection, in this embodiment, the second fixing rod 53 is rotatably connected to the connecting rod 52 through a rotating shaft, the rotating shaft penetrates through the connecting rod 52 and the second fixing rod 53, the second locking member 531 is a fastening nut, both ends of the rotating shaft are provided with fastening nuts, and when the fastening nuts are in a belt-tight state, the two fastening nuts clamp the second fixing rod 53, thereby limiting rotation of the second fixing rod 53.

Illustratively, the camera 1 is a CCD camera, the image of the object is focused onto a CCD chip through a lens, the CCD accumulates charges in a corresponding proportion according to the intensity of light, the charges accumulated by each pixel are shifted out point by point under the control of a video time sequence, and after filtering and amplifying processing, a video signal output is formed and then transmitted to a processor.

Illustratively, the first fixing rod 51 is a telescopic rod capable of being adjusted in a telescopic manner, and the length of the first fixing rod 51 is adjusted in a telescopic manner, so that the distance from the bottom of the first fixing rod 51 to the detection table is adjusted, that is, the distance between the camera 1 and a chip placed on the detection table can be adjusted, so that the focal length of the camera 1 is adjusted, and the shooting of the camera 1 is clearer.

Exemplarily, the detection table is a two-axis moving platform capable of moving transversely and longitudinally, generally, the LED chips on the wafer are distributed in a longitudinal and transverse arrangement, and the detection table can move transversely and longitudinally to move the chips one by one into the irradiation regions of the first light source 3 and the second light source 4 (i.e., the detection regions), so that the detection of the chips can be sequentially realized under the condition that the positions of the camera 1, the first light source 3 and the second light source 4 are not changed, and the detection is convenient and fast.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides an automatic light sense device of chip identification which characterized in that: the detection device comprises a processor, a camera, a detection table, a first light source and a second light source, wherein the processor is electrically connected with the camera, the first light source and the second light source are respectively arranged above the detection table, the irradiation area of the first light source on the detection table is overlapped with the irradiation area of the second light source on the detection table, and the color of the first light source is different from that of the second light source.

2. The chip-recognition automatic light-sensing device as claimed in claim 1, wherein: the first light source is arranged along the periphery of the camera, the camera and the first light source vertically face the detection table, and the second light source obliquely faces the detection table.

3. The chip recognition auto-optical sensor as claimed in claim 2, wherein: the camera comprises a camera body and is characterized by further comprising a fixing frame, wherein the fixing frame comprises a first fixing rod, a connecting rod and a second fixing rod, the connecting rod is connected with the side portion of the first fixing rod, the second fixing rod is connected with the connecting rod, the camera is installed at the bottom of the first fixing rod through the first light source, and the second light source is installed at the bottom of the second fixing rod.

4. The chip-recognition automatic light-sensing device as claimed in claim 3, wherein: the connecting rod is fixedly connected with the connecting sleeve, and a first locking piece for limiting the rotation of the connecting sleeve is arranged on the connecting sleeve.

5. The chip-recognition automatic light-sensing device as claimed in claim 3, wherein: the second fixing rod is rotatably connected with the connecting rod, and a second locking piece for limiting the second fixing rod to rotate is arranged on the second fixing rod.

6. The chip recognition auto-optical sensor as claimed in claim 1, wherein: the camera is a CCD camera.

7. The chip-recognition automatic light-sensing device as claimed in claim 3, wherein: the first fixed rod is a telescopic rod capable of being adjusted in a telescopic mode.

8. The chip-recognition automatic light-sensing device as claimed in claim 1, wherein: the detection platform is a two-axis moving platform capable of moving transversely and longitudinally.