CN112735307A - Device and method for acquiring indentation image of conductive particle - Google Patents
Device and method for acquiring indentation image of conductive particle Download PDFInfo
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- CN112735307A CN112735307A CN201911074268.9A CN201911074268A CN112735307A CN 112735307 A CN112735307 A CN 112735307A CN 201911074268 A CN201911074268 A CN 201911074268A CN 112735307 A CN112735307 A CN 112735307A
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- 238000007373 indentation Methods 0.000 title claims abstract description 45
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- 238000006073 displacement reaction Methods 0.000 claims abstract description 99
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- 230000001070 adhesive effect Effects 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000004973 liquid crystal related substance Substances 0.000 description 4
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- 238000005259 measurement Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/695—Control of camera direction for changing a field of view, e.g. pan, tilt or based on tracking of objects
Abstract
The invention relates to a device for acquiring an indentation image of conductive particles, which comprises a control module, a laser displacement sensor, a driving assembly and a vision module, wherein the laser displacement sensor, the driving assembly and the vision module are electrically connected with the control module; the driving assembly is used for driving the laser displacement sensor to horizontally move along the display panel and driving the vision module to horizontally move and vertically move along the display panel; the laser displacement sensor is used for measuring the distance between the laser displacement device and the display panel in real time and reporting the distance to the control module so as to determine whether the binding part between the display panel and the flexible circuit board is detected; when the control module detects that the display panel is bound with the flexible circuit board, the control module controls the vision module to shoot image information of the bound part of the display panel and the flexible circuit board, and synchronously controls the driving assembly to drive the vision module to shoot in the vertical direction. The invention also relates to an acquisition method for acquiring the conductive particle indentation image. The image of the conductive particle indentation obtained by the invention can be moved to obtain complete conductive particle indentation information.
Description
Technical Field
The technical scheme of the invention belongs to the field of FPC/COF binding of a liquid crystal display panel, and particularly relates to a device and a method for acquiring an indentation image of conductive particles.
Background
Anisotropic Conductive Film (ACF) is widely used in the packaging of various electronic components, and the ACF is composed of Conductive particles and an insulating adhesive material, and has a special structure that makes it have the functions of conduction, isolation and adhesion. The conductive particles are a component with conductive property contained in the anisotropic conductive adhesive film, and are used for connecting electrodes between the chip and the substrate and avoiding conduction of adjacent electrodes. After the anisotropic conductive adhesive is attached to the upper object and the lower plate to be accurately aligned and pressed, the insulating adhesive material is cured after heating and pressurizing for a period of time, and a stable structure with vertical conduction and transverse insulation can be formed. However, when the anisotropic conductive adhesive is pressed, the number of deformable conductive particles that can be conducted between the upper object and the lower plate is insufficient due to uneven or insufficient pressure, and the conductivity is not good; or when the density distribution of the conductive particles is not uniform, the conductivity is also poor. Therefore, in order to avoid the above situation, when the anisotropic conductive film is adhered, it is generally necessary to perform indentation detection on the conductive particles, and acquire an indentation image to determine the conductivity.
In the prior art, a linear array CCD camera is adopted to obtain an impression image for detecting the impression of conductive particles, wherein a sensor of the linear array CCD camera is composed of one line or a plurality of lines of photosensitive chips, and a required image can be obtained only by performing relative motion through mechanical motion during photographing. However, such line cameras suffer from the following drawbacks:
in the image capturing process, the movement speed of the product is not matched with the acquisition speed of a camera, so that the image lacks a small part of product information, and the image is stretched longitudinally or transversely, so that the acquisition result is inaccurate; and the linear array camera has high requirements on a mechanical platform, needs to be matched with mechanical materials for selection, and has high material cost.
Disclosure of Invention
The invention mainly solves the technical problem of providing a device and a method for acquiring an indentation image of conductive particles, and can solve the problems that in the image capturing process of a linear array camera in the prior art, the movement speed of a product is not matched with the acquisition speed of the camera, the image lacks part of product information, and the image is stretched longitudinally or transversely, so that the acquisition result is inaccurate.
In order to solve the above technical problem, one technical solution of the present invention is to provide an apparatus for obtaining an indentation image of conductive particles, including: the control module is electrically connected with the laser displacement sensor, the driving assembly and the vision module; the driving assembly is used for driving the laser displacement sensor to move horizontally along the display panel and driving the vision module to move horizontally and vertically along the display panel; the laser displacement sensor is used for measuring the distance between the laser displacement device and the display panel in real time and reporting to the control module so as to determine whether the binding part between the display panel and the flexible circuit board is detected; when the control module detects that the binding part of the display panel and the flexible circuit board displays, the control module controls the visual module to shoot image information of the binding part of the display panel and the flexible circuit board and synchronously controls the driving assembly to drive the visual module to shoot in the vertical direction, wherein the binding part of the display panel and the flexible circuit board carries conductive particles.
Wherein the driving assembly comprises a vertical moving platform and a horizontal moving platform; the vertical moving platform is connected with the vision module and is used for adjusting the position of the vision module in the vertical direction; the horizontal moving platform is connected with the vertical moving platform and is used for adjusting the position of the vision module in the horizontal direction.
Wherein, the device for acquiring the conducting particle indentation image further comprises: a frame and a carrier; the laser displacement sensor is fixed at one end of the vertical moving platform and is arranged parallel to the microscope carrier, the vision module and the vertical moving platform are fixedly connected to the same side of the laser displacement sensor, and the vertical moving platform can drive the laser displacement sensor and the vision module to move in the vertical direction.
The frame comprises a base, at least two upright posts and at least two fixed blocks; the upright posts are fixed at the corners of the two ends of the base, the base supports the driving assembly, the fixing block is parallel to the base and fixed at the upper ends of the upright posts, and the fixing block supports the carrying platform.
The carrying platform comprises at least one fixed base, at least two suction nozzles and a placing plate; the placing plate is fixed between the two fixing blocks and is parallel to the base, at least one fixing base is fixed between the two fixing blocks and is parallel to the base, at least two suction nozzles are arranged on the fixing base, the upper surfaces of the suction nozzles and the placing plate are located on the same plane, and the upper surfaces of the suction nozzles and the placing plate provide support for the display panel.
The vision module comprises a lens, a Wollaston prism, a polarizer, a camera, a slider and a light source port; the camera lens is arranged at the top of the polarizer, the camera lens and the laser displacement sensor are arranged in parallel to the carrier, the polarizer is used for converting natural light into polarized light, the Wollaston prism is arranged at the bottom end of the polarizer and is used for dividing a beam of linearly polarized light into two beams of polarized light with mutually vertical vibration planes, the slider is arranged on an emergent light path of the Wollaston prism and is connected with the camera, the slider is used for combining the two beams of polarized light, and the light source port is arranged at the other side of the polarizer and is used for providing a light source.
Wherein the camera is an area array industrial camera.
In order to solve the above technical problem, an embodiment of the present application further provides an obtaining method for obtaining an indentation image of a conductive particle, which adopts the following technical scheme: the driving component drives the laser displacement sensor and the vision module to horizontally move towards the other side along any one side of the display panel; the laser displacement sensor measures the distance between the laser displacement device and the display panel in real time and reports the distance to the control module so as to determine whether the binding part between the display panel and the flexible circuit board is detected; when the laser displacement sensor detects that the display panel is bound with the flexible circuit board, the control module shoots image information of the binding part of the display panel and the flexible circuit board according to the control of the visual module and synchronously controls the driving assembly to drive the visual module to shoot in the vertical direction, and the binding part of the display panel and the flexible circuit board is carried with conductive particles.
Before the step of driving the laser displacement sensor and the vision module to move along any one side of the display panel to the other side by the driving assembly, the method further comprises the following steps: placing any side of the display panel on the carrying platform in parallel to the placing plate; the light emitted by the laser displacement sensor is aligned with the display panel, the distance between the laser displacement device and the display panel is measured, and the distance is reported to the control module; after the step of the driving assembly driving the laser displacement sensor and the vision module to move along any one side of the display panel to the other side, the method further comprises: and when the control module monitors that the distance measured by the laser displacement sensor is smaller than a preset threshold value, the laser displacement sensor is confirmed to detect the binding position of the display panel and the flexible circuit board.
The control module is used for controlling the visual module to shoot image information at the binding part of the display panel and the flexible circuit board, and synchronously controlling the driving assembly to drive the visual module to shoot in the vertical direction, and the control module comprises the following steps: the control module sets the focal length of the vision module according to the distance between the laser shifter and the display panel; the control module controls the vision module to shoot the binding position of the display panel and the flexible circuit board in the horizontal and vertical directions according to the focal length at a preset speed and a preset distance.
The beneficial effect of this application is: different from the prior art, the laser displacement sensor, the driving assembly and the vision module are electrically connected with the control module through the control module; the driving assembly is used for driving the laser displacement sensor to horizontally move along the display panel and driving the vision module to horizontally move and vertically move along the display panel; the laser displacement sensor is used for measuring the distance between the laser displacement device and the display panel in real time and reporting the distance to the control module so as to determine whether the binding part between the display panel and the flexible circuit board is detected; when the control module detects that the display panel is bound with the flexible circuit board, the control module controls the vision module to shoot image information of the bound part of the display panel and the flexible circuit board, and synchronously controls the driving assembly to drive the vision module to shoot in the vertical direction. The obtained image of the conductive particle indentation can obtain all product information, the obtained image result is accurate, the requirement on a used platform is low, and the used cost is low.
Drawings
In order to illustrate the solution of the present application more clearly, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are some embodiments of the invention, and that other drawings may be derived from these drawings by a person skilled in the art without inventive effort.
FIG. 1 is a schematic structural diagram of an apparatus for obtaining an image of an indentation of a conductive particle according to an embodiment of the invention;
FIG. 2 is a schematic view of the structure of FIG. 1 in another direction;
FIG. 3 is a schematic diagram of a visual module in the embodiment of FIG. 1;
fig. 4 is a flowchart of an obtaining method for obtaining an indentation image of a conductive particle according to an embodiment of the invention.
Reference numerals: 10-a device for acquiring an image of conductive particle indentations; 11-a stage; 12-a drive assembly; 13-a vision module; 14-laser displacement sensor; 15-a frame; 111-a fixed substrate; 112-a suction nozzle; 113-placing a plate; 121-a horizontal moving platform; 122-a vertical moving platform; 131-a lens; 132-Wollaston prism; 133-polarizer; 134-a camera; 135-light source port; 136-a glider; 151-a base; 152-upright column; 153-fixed block; 20-a display panel; 21-the place where the display panel is bound to the flexible circuit board.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Unless defined otherwise, 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 belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The terms "first", "second", and the like in the claims, the description, and the drawings of the specification are used for distinguishing different objects and not for describing a particular order.
In order to make the technical solutions of the present application better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.
Referring to fig. 1 and 2, an apparatus 10 for obtaining an image of conductive particle indentations is provided, including: a control module (not shown), a laser displacement sensor 14, a driving assembly 12 and a vision module 13 electrically connected to the control module; the driving assembly 12 is used for driving the laser displacement sensor 14 to move horizontally along the display panel 20, and driving the vision module 13 to move horizontally and vertically along the display panel 20; the laser displacement sensor 14 is used for measuring the distance between the laser displacement device 14 and the display panel 20 in real time and reporting to the control module to determine whether the binding position 21 between the display panel and the flexible circuit board is detected; when the control module detects that the display panel is bound with the flexible circuit board 21, the control module controls the vision module 13 to shoot image information of the binding place 21 of the display panel and the flexible circuit board, and synchronously controls the driving assembly 12 to drive the vision module 13 to shoot in the vertical direction, wherein the binding place of the display panel and the flexible circuit board carries conductive particles.
The beneficial effect of this application is: different from the prior art, the laser displacement sensor 14, the driving component 12 and the vision module 13 are electrically connected with the control module through the control module; the driving component 12 is used for driving the laser displacement sensor 14 to move horizontally along the display panel 20, and driving the vision module 13 to move horizontally and vertically along the display panel 20; the laser displacement sensor 14 is used for measuring the distance between the laser displacement device 14 and the display panel 20 in real time and reporting to the control module to determine whether the binding position 21 between the display panel and the flexible circuit board is detected; when the control module detects a binding part 21 of the display panel and the flexible circuit board, the control module controls the visual module 13 to shoot image information of the binding part 21 of the display panel and the flexible circuit board, and synchronously controls the driving assembly 12 to drive the visual module 13 to shoot in the vertical direction, wherein the binding part of the display panel and the flexible circuit board carries conductive particles; the obtained image of the conductive particle indentation can obtain all product information, the obtained image result is accurate, the requirement on a used platform is low, and the used cost is low.
The first embodiment of the apparatus for obtaining an indentation image of conductive particles of the present application:
the device comprises: a stage 11, a drive assembly 12, a vision module 13, a laser displacement sensor 14 and a frame 15. The driving assembly 12 includes a horizontal moving platform 121 and a vertical moving platform 122; the vertical moving platform 122 is connected to the vision module 13 for adjusting the vertical position of the vision module 13, and the horizontal moving platform 121 is connected to the vertical moving platform 122 for adjusting the horizontal position of the vision module 13. The carrier 11 is disposed right above the frame 15, the carrier 11 is configured to carry the display panel 20, the horizontal moving platform 121 is fixed in the middle of the frame 15 and is parallel to the carrier 11, the vertical moving platform 122 is fixed at one end of the horizontal moving platform 121, the horizontal moving platform 121 can drive the vertical moving platform 122 to move 121 in the horizontal direction, the laser displacement sensor 14 is fixedly connected to the same side of the vertical moving platform 122 as the horizontal moving platform 121 through a connecting block and is parallel to the carrier 11, the vision module 13 is fixedly connected to the same side of the laser displacement sensor 14 as the vertical moving platform 122, and the vertical moving platform 122 can drive the vision module 13 to move in the vertical direction.
The vision module 13 is a module for acquiring an image of the conductive particle indentation by using a differential interference contrast microscope (DIC), and includes a polarizer 133, an analyzer, a wollaston prism 132 (i.e., DIC prism), a slider 136, and the like. The differential interference contrast microscope converts natural light into linearly polarized light through a polarizer 133, utilizes the linearly polarized light as a light source, divides a beam of linearly polarized light into two beams of polarized light with mutually vertical vibration planes after being refracted by a Wollaston prism 132, irradiates a sample to generate a phase difference carrying sample information, then merges and combines the two beams of light through a glider 136, generates interference through an analyzer, converts a tiny phase difference in the sample into a bright and dark difference of light intensity, increases the sample, causes artificial three-dimensional visual sense of the sample, presents granular, embossed, cracked, holes and the like, improves the quality of images, and accordingly improves the accuracy of visual detection.
The vision module 13 is formed by combining laser light sources with three colors (RGB) which are coaxial, and each color is independently controllable, so that the colors can be conveniently switched at any time. The differential interference contrast microscope can support 4/3 area array industrial cameras to the maximum extent, and the lens body can be matched with a 5X/10X/20X high-definition imaging objective lens according to detection requirements. The area array industrial camera has higher frame rate and high resolution, is suitable for high-speed shooting of large-format images, adopts global exposure and greatly improves the image quality, and is suitable for application requiring high-capacity data transmission, high resolution and high dynamic range. The differential interference contrast microscope is selected to be combined with the area array industrial camera, so that the cost is lower compared with the scheme of adopting a linear array camera, and the visual image analysis is convenient. The high-definition object lens with the power of 10 times and the visual field with the size of 2mm by 1mm are matched with the high-resolution high-frame rate of the camera, so that clear COF binding images can be stably collected.
The principle of the laser displacement sensor 14 is triangular measurement, which measures the distance between the liquid crystal display panel and the sensor; the distance data is fed back to the control module, and the vision module 13 continuously photographs the binding position of the display panel and the flexible circuit board to obtain an image of the indentation of the conductive particles.
The vision module 13 and the laser displacement sensor 14 are arranged at one end of the vertical moving platform 122 and connected with the vertical moving platform 122, in the process that the vision module 13 and the laser displacement sensor 14 acquire the conductive particle image, the vertical moving platform 122 can be used for adjusting the displacement of the vision module 13 and the laser displacement sensor 14 in the vertical direction, the vertical direction is continuously adjusted, the horizontal moving platform 121 is arranged at the bottom of the vertical moving platform 122, the horizontal moving platform 121 can drive the vertical moving platform 15 to move in the platform direction, and therefore the displacement of the vision module 13 and the laser displacement sensor 14 in the horizontal direction can be adjusted through the vertical moving platform 122; the device 10 for acquiring the indentation image of the conductive particles can acquire the complete image of the conductive particles by adjusting the horizontal moving platform 121 and the vertical moving platform 122 in the horizontal and vertical directions. The device can acquire a complete target image at one time, has the advantage of intuitionistic image measurement, and plays a vital imaging role in the measurement application of the shape, the size, the temperature and the like of a target object. The device can expose in a short time, and can image a dynamic object in a short time, so that the device is also applied to the industries of high-speed operation of some objects. In the implementation case, the cost of the matched mechanical platform is much lower than that of a linear array camera, and meanwhile, the phenomenon that in the image taking process, the movement speed is not matched with the camera acquisition speed, so that partial product information of an image is lacked, the image is stretched in the longitudinal direction or the transverse direction, the measuring result is inaccurate and the like is avoided.
The device 10 for obtaining the conducting particle indentation further comprises a control module (not shown in the figure), the control module is connected with the laser displacement sensor 14, the driving assembly 12 and the vision module 13, and the control module is used for receiving data uploaded by the laser displacement sensor 14, the driving assembly 12 and the vision module 13, and transmitting the data to the driving assembly 12 after data processing, so that the position of the vision module 13 is adjusted through the driving assembly, and the vision module 13 can shoot an image of the conducting particle indentation. According to the method and the device, distance data fed back by the laser displacement sensor 14 are sent to the control module, and the control module dynamically adjusts the focal length of the lens of the vision module 13, so that the conducting particle indentation image is clearly acquired in motion.
The frame 15 comprises a base 151, at least two upright posts 152 and at least two fixed blocks 153; the upright posts 152 are fixed at corners of two ends of the base 151, the base 151 provides support for the driving assembly 12, the two fixing blocks 153 are parallel to the upper end of the base 151 fixed on the upright posts 152, and the fixing blocks 153 provide support for the carrier 11.
The stage 11 includes at least one fixed base 111, at least two suction nozzles 112, and a placing plate 113; the placing plate 113 is fixed between the two fixing blocks 153 and is parallel to the base 151, the at least one fixing base 111 is fixed between the two fixing blocks 153 and is parallel to the fixing base 111 and the base 151, the at least two suction nozzles 112 are arranged on the fixing base 111, the upper surfaces of the suction nozzles 112 and the placing plate 113 are on the same plane, and the upper surfaces of the suction nozzles 112 and the placing plate 113 provide support for the display panel 20.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a vision module.
The vision module 13 includes a lens 131, a wollaston prism 132, a polarizer 133, a camera 134, a slider 136, and a light source port 135; the lens 131 is arranged at the top end of the polarizer 133, the lens 131 and the laser displacement sensor 14 are arranged in parallel to the stage 11, the polarizer 133 is used for converting natural light into polarized light, the Wollaston prism 132 is arranged at the bottom end of the polarizer 133 and is used for dividing a beam of linearly polarized light into two beams of polarized light with mutually vertical vibration planes, the slider 136 is arranged on an outgoing light path of the Wollaston prism 132 and is connected with the camera 134, the camera is used for shooting an indentation image of a conductive particle, the slider 136 is used for combining the two beams of polarized light, and a light source port is arranged at the other side of the polarizer 133 and is used for providing a light source. Further, the wollaston prism 132 may be replaced with a nomarski prism.
The camera 134 is an area-array industrial camera.
Referring to fig. 1-3, an operation process of an apparatus for obtaining an indentation image of conductive particles is provided:
the upstream transfer platform accurately places the display panel 20 bound with the FPC/COF on the carrier 11, with the placing accuracy being parallel to the horizontal moving platform 121 and with one side of the display panel 20 being parallel to the placing plate 113, and the light emitted by the laser displacement sensor 14 can fall on one side of the display panel 20;
the moving speed of the horizontal moving platform 121 is set by the control module, and the horizontal moving platform 121 drives the vertical moving platform 122, the laser displacement sensor 14 and the vision module 13 to horizontally move from any one side of the display panel 20 to the other side at the speed, so that the laser displacement sensor 14 measures the distance of the display panel 20 of the laser displacement sensor 14 and uploads the distance to the control module in real time;
when the laser displacement sensor 14 detects that the distance of the display panel 20 of the laser displacement sensor 14 changes, only the binding part 21 of the display panel and the flexible circuit board protrudes relative to one side of the display panel 20 in one side of the display panel 20, so that the detected distance changes to indicate that the laser displacement sensor 14 is aligned with the binding part 21 of the display panel and the flexible circuit board, and the current distance of the display panel 20 of the laser displacement sensor 14 at the moment is reported to the control module;
the control module sets the focal length of the visual module 13 according to the current distance of the display panel 20 of the laser displacement sensor 14, so that the visual module 13 can clearly photograph the binding part 21 of the display panel and the flexible circuit board, and simultaneously drives the vertical moving platform 122 to drive the visual module 13 to vertically move, at this moment, the horizontal moving platform 121 still continues to drive the visual module 13 to horizontally move, and the visual module 13 is driven by the horizontal moving platform 121 and the vertical moving platform 122, and continuously photographs the binding part 21 of the display panel and the flexible circuit board in the horizontal moving and vertical moving processes so as to obtain an image of the conducting particle indentation.
The image of the conducting particle indentation is obtained in the mode, the laser displacement sensor 14 is used for measuring data, the focal distance from the vision module 13 to a product is intelligently adjusted, and an important image taking method is provided for obtaining the image of the conducting particle indentation. Even in the process of replacing liquid crystal panel displays of different models, the focal distance from the vision module 13 to a product is not required to be adjusted again by spending time and manpower, and the liquid crystal panel displays of different models can be rapidly replaced and produced. The monopoly and the constraint of the traditional linear array camera detection method are broken through, the threshold is reduced, the cost is saved, and the development period is shortened.
Referring to fig. 4, the present invention provides an obtaining method for obtaining an indentation image of a conductive particle, and the obtaining method for obtaining the indentation image of the conductive particle according to the embodiment of the present invention includes the following steps:
s101: the driving component drives the laser displacement sensor and the vision module to horizontally move towards the other side along any one side of the display panel.
The horizontal displacement platform 121 drives the vertical displacement platform 122, the laser displacement sensor 14 and the vision module 13 to move horizontally from any side of the display panel 20 to the other side at a speed set by the control module.
S102: the laser displacement sensor measures the distance between the laser displacement device and the display panel in real time and reports the distance to the control module so as to determine whether the binding position of the display panel and the flexible circuit board is detected.
When the horizontal moving platform 121 drives the vertical moving platform 122, the laser displacement sensor 14 and the vision module 13 to move horizontally from any one side of the display panel 20 to the other side at the speed, the laser displacement sensor 14 measures the distance of the display panel 20 of the laser displacement sensor 14 and uploads the distance to the control module in real time.
S103: when the laser displacement sensor detects that the display panel is bound with the flexible circuit board, the control module shoots image information of the binding position of the display panel and the flexible circuit board according to the control visual module and synchronously controls the driving assembly to drive the video module to shoot in the vertical direction, and the binding position of the display panel and the flexible circuit board is carried with conductive particles.
When the laser displacement sensor 14 detects that the distance of the display panel 20 of the laser displacement sensor 14 changes, only the binding place 21 between the display panel and the flexible circuit board protrudes relative to one side of the display panel 20 in one side of the display panel 20, so that the detected distance changes, that is, the laser displacement sensor 14 is aligned with the binding place 21 between the display panel of the display panel 20 and the flexible circuit board, and the current distance of the display panel 20 of the laser displacement sensor 14 at the moment is reported to the control module;
the control module sets the focal length of the visual module 13 according to the current distance of the display panel 20 of the laser displacement sensor 14, so that the visual module 13 can clearly photograph the binding part 21 of the display panel and the flexible circuit board, and simultaneously drives the vertical moving platform 122 to drive the visual module 13 to vertically move, at this moment, the horizontal moving platform 121 still continues to drive the visual module 13 to horizontally move, and the visual module 13 is driven by the horizontal moving platform 121 and the vertical moving platform 122, and continuously photographs the binding part 21 of the display panel and the flexible circuit board in the horizontal moving and vertical moving processes so as to obtain an image of the conducting particle indentation.
In this embodiment, before the step of driving the laser displacement sensor and the vision module to move along any one side of the display panel to another side by the driving assembly, the method further includes: placing any side of the display panel on the carrying platform in parallel with the placing plate; the light emitted by the laser displacement sensor is aligned with the display panel, the distance between the laser displacement device and the display panel is measured, and the measured distance is reported to the control module; after the step of driving the laser displacement sensor and the vision module to move along any one side of the display panel to the other side by the driving assembly, the method further comprises the following steps: and when the control module monitors that the distance measured by the laser displacement sensor is smaller than a preset threshold value, confirming that the laser displacement sensor detects the binding position of the display panel and the flexible circuit board.
In this embodiment, the step of the control module shooting the image information of the binding place of the display panel and the flexible circuit board according to the control visual module and synchronously controlling the driving assembly to drive the video module to shoot in the vertical direction includes: the control module sets the focal length of the vision module according to the distance between the current laser shifter and the display panel; the control module controls the visual module to shoot the binding position of the display panel and the flexible circuit board in the horizontal and vertical directions according to the focal length at a preset speed and distance.
The embodiment of the invention can acquire all product information from the image of the conductive particle indentation, and the acquired image result is accurate, thereby saving manpower and material resources.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention. And such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. An apparatus for obtaining an image of an indentation of a conductive particle, comprising:
the control module is electrically connected with the laser displacement sensor, the driving assembly and the vision module;
the driving assembly is used for driving the laser displacement sensor to move horizontally along a display panel and driving the vision module to move horizontally and vertically along the display panel;
the laser displacement sensor is used for measuring the distance between the laser displacement device and the display panel in real time and reporting to the control module so as to determine whether the binding part between the display panel and the flexible circuit board is detected;
when the control module detects that the binding part of the display panel and the flexible circuit board displays, the control module controls the visual module to shoot image information of the binding part of the display panel and the flexible circuit board and synchronously controls the driving assembly to drive the visual module to shoot in the vertical direction, wherein the binding part of the display panel and the flexible circuit board carries conductive particles.
2. The device for acquiring the indentation image of conductive particles according to claim 1,
the driving assembly comprises a vertical moving platform and a horizontal moving platform;
the vertical moving platform is connected with the vision module and is used for adjusting the position of the vision module in the vertical direction;
the horizontal moving platform is connected with the vertical moving platform and used for adjusting the position of the vision module in the horizontal direction.
3. The device for acquiring the indentation image of conductive particles according to claim 2,
the device for acquiring the conducting particle indentation image further comprises: a frame and a carrier;
the laser displacement sensor is fixed at one end of the vertical moving platform and is arranged parallel to the microscope carrier, the visual module and the vertical moving platform are fixedly connected to the same side of the laser displacement sensor, and the vertical moving platform can drive the laser displacement sensor and the visual module to move in the vertical direction.
4. The device for obtaining the indentation image of conductive particles according to claim 3,
the frame comprises a base, at least two upright posts and at least two fixed blocks;
the stand is fixed in on the base both ends corner position, the base is for drive assembly provides the support, the fixed block is on a parallel with the base is fixed in the stand upper end, the fixed block provides the support for the microscope carrier.
5. The device for obtaining the indentation image of conductive particles according to claim 4,
the carrying platform comprises at least one fixed base, at least two suction nozzles and a placing plate;
the placing plate is fixed between the two fixed blocks, and is arranged in parallel with the base, at least one fixed base is fixed between the two fixed blocks, and is arranged in parallel with the base, at least two suction nozzles are arranged on the fixed base, the upper surfaces of the suction nozzles and the placing plate are positioned on the same plane, and the upper surfaces of the suction nozzles and the placing plate provide support for the display panel.
6. The apparatus for obtaining an image of an indentation of a conductive particle according to any one of claims 1 to 5,
the vision module comprises a lens, a Wollaston prism, a polarizer, a camera, a slider and a light source port;
the camera lens is arranged at the top of the polarizer, the camera lens and the laser displacement sensor are arranged in parallel to the carrier, the polarizer is used for converting natural light into polarized light, the Wollaston prism is arranged at the bottom end of the polarizer and is used for dividing a beam of linearly polarized light into two beams of polarized light with mutually vertical vibration planes, the slider is arranged on an emergent light path of the Wollaston prism and is connected with the camera, the slider is used for combining the polarized light by the two beams, and the light source port is arranged at the other side of the polarizer and is used for providing a light source.
7. The device for obtaining the indentation image of conductive particles according to claim 6,
the camera is an area array industrial camera.
8. An acquisition method using the apparatus for acquiring an indentation image of a conductive particle according to any one of claims 1 to 7, the method comprising:
the driving component drives the laser displacement sensor and the vision module to horizontally move towards the other side along any one side of the display panel;
the laser displacement sensor measures the distance between the laser displacement device and the display panel in real time and reports the distance to the control module so as to determine whether the binding part between the display panel and the flexible circuit board is detected;
when the laser displacement sensor detects that the display panel is bound with the flexible circuit board, the control module controls the vision module to shoot image information of the bound part of the display panel and the flexible circuit board according to control, and synchronously controls the driving assembly to drive the vision module to shoot in the vertical direction, and the bound part of the display panel and the flexible circuit board carries conductive particles.
9. The method for obtaining an image of an indentation of a conductive particle according to claim 8,
before the step of driving the laser displacement sensor and the vision module to move along any side of the display panel to another side by the driving assembly, the method further comprises the following steps:
placing any side of the display panel on the carrying platform in parallel to the placing plate;
the light emitted by the laser displacement sensor is aligned with the display panel, the distance between the laser displacement device and the display panel is measured, and the measured distance is reported to the control module;
after the step of the driving assembly driving the laser displacement sensor and the vision module to move along any one side of the display panel to the other side, the method further comprises:
and when the control module monitors that the distance measured by the laser displacement sensor is smaller than a preset threshold value, confirming that the laser displacement sensor detects the binding position of the display panel and the flexible circuit board.
10. The method as claimed in claim 8, wherein the step of the control module controlling the vision module to capture image information of a binding portion between the display panel and the flexible circuit board and synchronously controlling the driving assembly to drive the vision module to capture images in a vertical direction includes:
the control module sets the focal length of the vision module according to the current distance between the laser shifter and the display panel;
the control module controls the vision module to shoot the binding position of the display panel and the flexible circuit board in the horizontal and vertical directions according to the focal length at a preset speed and a preset distance.
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| CN201911031532 | 2019-10-28 | ||
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113923370A (en) * | 2021-12-14 | 2022-01-11 | 深圳宇骏视觉智能科技有限公司 | A photographic arrangement for industry visual detection |
| CN114324360A (en) * | 2021-12-31 | 2022-04-12 | 深圳鼎晶科技有限公司 | AOI indentation detection system and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080020726A (en) * | 2006-08-29 | 2008-03-06 | 세광테크 주식회사 | Apparatus for testing trace of lcd pannel and the method of the same |
| CN101960295A (en) * | 2008-03-04 | 2011-01-26 | 有限会社共同设计企画 | Electronic component inspecting method and apparatus used in the method |
| JP2011124391A (en) * | 2009-12-10 | 2011-06-23 | Hitachi High-Technologies Corp | Operation processing device or method for inspecting sticking state of acf, or line or method for assembling display substrate module |
| CN108037124A (en) * | 2017-11-28 | 2018-05-15 | 深圳市联得自动化装备股份有限公司 | Conducting particles press mark detection device and its detection method |
| CN108152290A (en) * | 2017-12-24 | 2018-06-12 | 大连益盛达智能科技有限公司 | A kind of display module detection of particles camera mechanism |
| CN108318496A (en) * | 2018-05-09 | 2018-07-24 | 海宁市科威工业电子科技有限公司 | One kind being used for the online fabric defects detection device of tricot machine |
| CN108897153A (en) * | 2018-08-10 | 2018-11-27 | 宁波舜宇仪器有限公司 | Liquid crystal display panel conducting particles Automatic Visual Inspection device |
| CN109211901A (en) * | 2018-08-03 | 2019-01-15 | 深圳市联得自动化装备股份有限公司 | Conducting particles press mark detection device and its detection method |
| JP2019168293A (en) * | 2018-03-22 | 2019-10-03 | 芝浦メカトロニクス株式会社 | Inspection device and inspection method |
| CN209542481U (en) * | 2018-12-20 | 2019-10-25 | 深圳市联得自动化装备股份有限公司 | Laser range finder adjustment structure, camera assembly and conducting particles press mark detection device |
-
2019
- 2019-11-06 CN CN201911074268.9A patent/CN112735307A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20080020726A (en) * | 2006-08-29 | 2008-03-06 | 세광테크 주식회사 | Apparatus for testing trace of lcd pannel and the method of the same |
| CN101960295A (en) * | 2008-03-04 | 2011-01-26 | 有限会社共同设计企画 | Electronic component inspecting method and apparatus used in the method |
| JP2011124391A (en) * | 2009-12-10 | 2011-06-23 | Hitachi High-Technologies Corp | Operation processing device or method for inspecting sticking state of acf, or line or method for assembling display substrate module |
| CN108037124A (en) * | 2017-11-28 | 2018-05-15 | 深圳市联得自动化装备股份有限公司 | Conducting particles press mark detection device and its detection method |
| CN108152290A (en) * | 2017-12-24 | 2018-06-12 | 大连益盛达智能科技有限公司 | A kind of display module detection of particles camera mechanism |
| JP2019168293A (en) * | 2018-03-22 | 2019-10-03 | 芝浦メカトロニクス株式会社 | Inspection device and inspection method |
| CN108318496A (en) * | 2018-05-09 | 2018-07-24 | 海宁市科威工业电子科技有限公司 | One kind being used for the online fabric defects detection device of tricot machine |
| CN109211901A (en) * | 2018-08-03 | 2019-01-15 | 深圳市联得自动化装备股份有限公司 | Conducting particles press mark detection device and its detection method |
| CN108897153A (en) * | 2018-08-10 | 2018-11-27 | 宁波舜宇仪器有限公司 | Liquid crystal display panel conducting particles Automatic Visual Inspection device |
| CN209542481U (en) * | 2018-12-20 | 2019-10-25 | 深圳市联得自动化装备股份有限公司 | Laser range finder adjustment structure, camera assembly and conducting particles press mark detection device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113923370A (en) * | 2021-12-14 | 2022-01-11 | 深圳宇骏视觉智能科技有限公司 | A photographic arrangement for industry visual detection |
| CN114324360A (en) * | 2021-12-31 | 2022-04-12 | 深圳鼎晶科技有限公司 | AOI indentation detection system and method |
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