CN114384092A - Panel detection device and panel detection method - Google Patents
Panel detection device and panel detection method Download PDFInfo
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- CN114384092A CN114384092A CN202111545306.1A CN202111545306A CN114384092A CN 114384092 A CN114384092 A CN 114384092A CN 202111545306 A CN202111545306 A CN 202111545306A CN 114384092 A CN114384092 A CN 114384092A
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
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- G01S17/48—Active triangulation systems, i.e. using the transmission and reflection of electromagnetic waves other than radio waves
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Abstract
The embodiment of the invention provides panel detection equipment and a panel detection method. The detection apparatus includes: the image acquisition device is used for acquiring the image of the panel to be detected. The distance measuring device is used for detecting the distance between the image acquisition device and the panel to be detected, wherein at any moment, in the detection direction of the panel to be detected, the corresponding detection point of the distance measuring device on the panel to be detected is positioned in front of the intersection point of the optical axis of the image acquisition device and the panel to be detected. The first driving mechanism drives the distance measuring device and the image acquisition device to synchronously move along the detection direction, so that the image acquisition device acquires the image of the panel to be detected along the detection direction. The second driving mechanism drives the distance measuring device and the image acquisition device to synchronously move along a first direction parallel to the optical axis of the image acquisition device based on the distance, so that the panel to be detected is imaged at the focus of the image acquisition device. According to the technical scheme, the image of the panel to be detected with better quality can be obtained, and the accuracy of the panel detection result is improved.
Description
Technical Field
The invention relates to the technical field of panel detection, in particular to panel detection equipment and a panel detection method.
Background
Chip On Glass (COG for short) is a technology in which a driving circuit Chip is directly bonded On a Glass substrate, and is widely applied to various display products such as liquid crystal display and electroluminescence technologies. In the COG process, a Conductive pin of a driving circuit is aligned to an electrode (bump) on a glass substrate, an Anisotropic Conductive Film (ACF) is used as a bonding dielectric material, and the Conductive pin of the driving circuit is connected and conducted with the electrode on the glass substrate at a high temperature and a high voltage for a certain period of time. Similarly, the flexible circuit board On Glass (FPC On Glass, FOG for short) is a technique in which a flexible circuit board (FPC) is directly bonded to a Glass substrate, and the process is similar to COG. Similarly, Chip On Film (COF) technology is a technology in which a semiconductor chip is first packaged on a flexible substrate, and then the flexible substrate of the packaged product is bonded to a glass substrate, and the manufacturing process is similar to COG. The panel detection technology can be used to detect the appearance of the panel, the effect of panel bonding, and the like.
The inspection is usually performed by first acquiring an image of the panel to be inspected, and then inspecting the quality of the panel through the image. Due to panel warpage and uneven absorption, situations may arise where the acquired image is not sharp enough or does not capture specific particles in the panel. Further, the accuracy of the panel detection is inevitably reduced, and even the panel detection cannot be successfully completed.
Disclosure of Invention
The present invention has been made in view of the above problems. According to an aspect of the present invention, there is provided a panel inspection apparatus including: and the image acquisition device is used for acquiring the image of the panel to be detected. And the distance measuring device is used for detecting the distance between the image acquisition device and the panel to be detected, wherein at any moment, in the detection direction of the panel to be detected, the corresponding detection point of the distance measuring device on the panel to be detected is positioned in front of the intersection point of the optical axis of the image acquisition device and the panel to be detected. And the first driving mechanism is used for driving the distance measuring device and the image acquisition device to synchronously move along the detection direction, so that the image acquisition device acquires the image of the panel to be detected along the detection direction. And the second driving mechanism is used for driving the distance measuring device and the image acquisition device to synchronously move along a first direction parallel to the optical axis of the image acquisition device based on the distance so as to enable the panel to be detected to be imaged at the focus of the image acquisition device.
Illustratively, the distance measuring device in the panel inspection apparatus includes a laser emitting portion and a laser receiving portion, and the image pickup device is located between the laser emitting portion and the laser receiving portion.
Illustratively, the laser emitting part, the image acquisition device and the laser receiving part in the panel detection device are arranged in sequence along the detection direction.
Illustratively, the distance measuring device in the panel detecting apparatus is a laser distance measuring sensor.
Illustratively, the laser ranging sensor in the panel detecting apparatus is a triangular laser ranging sensor.
Illustratively, the panel detection device further comprises: the support, image acquisition device fixes on the support. The adjusting mechanism is fixed on the support, the distance measuring device is arranged on the adjusting mechanism, and the adjusting mechanism is used for adjusting the position of the distance measuring device along a second direction which is perpendicular to the optical axis and the detection direction so as to enable the distance measuring device to be aligned with the image acquisition device in the second direction; and the adjusting mechanism is also used for adjusting the position of the distance measuring device along the first direction so as to enable the distance measuring device to be in the working range.
Illustratively, the adjusting mechanism in the panel detecting apparatus is a displacement platform.
Illustratively, the second driving mechanism in the panel detection device is connected to a bracket, and the bracket is driven by the second driving mechanism to move along the first direction.
Illustratively, the panel detection device may further include: the track that extends along the detection direction, sliding connection is to orbital year seat, and wherein support and second actuating mechanism all set up on year seat, and year seat is movable along the track under the drive of first actuating mechanism.
According to another aspect of the present invention, there is also provided a panel inspection method including: collecting an image of the panel to be detected along the detection direction of the panel to be detected by using an image collecting device; and detecting the panel to be detected according to the image. The distance measuring device and the image acquisition device are driven to synchronously move along a first direction parallel to an optical axis of the image acquisition device based on the distance so that the panel to be detected is located at a focus of the image acquisition device, wherein at any moment, in the detection direction of the panel to be detected, a corresponding detection point of the distance measuring device on the panel to be detected is located in front of an intersection point of the optical axis of the image acquisition device and the panel to be detected.
According to the technical scheme, in the panel detection process, the image acquisition device is controlled to move based on the distance measurement result of the distance measurement device which moves synchronously with the image acquisition device, so that the panel to be detected is always located at the focus of the image acquisition device. Therefore, clear imaging in the whole detection range of the panel to be detected is ensured to a certain extent. And the corresponding point of the distance measuring device on the panel to be detected is positioned in front of the corresponding point of the image acquisition device on the panel to be detected. The distance measuring device gives the predicted information of the subsequent change condition of the panel to be detected, such as the trend of warping, and the position of the image acquisition device can be adjusted more timely. Thereby, the quality of the image is further ensured. In conclusion, the technical scheme can obtain the image of the panel to be detected with better quality, and the accuracy of the panel detection result is improved.
The foregoing description is only an overview of the technical solutions of the present invention, and the embodiments of the present invention are described below in order to make the technical means of the present invention more clearly understood and to make the above and other objects, features, and advantages of the present invention more clearly understandable.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail embodiments of the present invention with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings, like reference numbers generally represent like parts or steps.
FIG. 1 shows a partial schematic view of a panel inspection apparatus in one embodiment of the invention;
FIG. 2 shows a schematic diagram of a distance measuring device and an image acquisition device of a panel detection apparatus in an embodiment of the invention;
FIG. 3 illustrates a partial schematic view of a panel inspection apparatus in one embodiment of the invention;
FIG. 4 shows a schematic flow diagram of a panel detection method of one embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a subset of embodiments of the invention and not all embodiments of the invention, with the understanding that the invention is not limited to the example embodiments described herein. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the invention described herein without inventive step, shall fall within the scope of protection of the invention.
According to one embodiment of the present invention, there is provided a panel inspection apparatus. The image of the panel to be detected can be firstly acquired by using the moving image acquisition device on the panel detection equipment, and then the quality of the panel can be detected through the image.
FIG. 1 illustrates a partial schematic view of a panel inspection apparatus 100 according to one embodiment of the invention. As shown in fig. 1, the panel inspection apparatus 100 includes an image pickup device 110, a distance measuring device 120, a first driving mechanism, and a second driving mechanism 130.
The image capturing device 110 on the panel inspection apparatus 100 is used to capture an image of the panel 190 to be inspected. It is understood that the image capturing device 110 may include an optical lens, and when the panel 190 to be detected is imaged at the focus of the image capturing device 110, i.e. the focus of the optical lens, the image captured by the image capturing device 110 is clearest. Optionally, the image capturing device 110 may further include a light source for polishing the panel 190 to be detected to be photographed, so as to improve the imaging quality.
The distance measuring device 120 is used to detect the distance between the image capturing device 110 and the panel 190 to be detected. The distance measuring device 120 may detect the distance between the image capturing device 110 and the panel 190 in real time during the process of capturing the image of the panel 190. It is understood that the distance measuring device 120 may maintain a fixed positional relationship with the image capturing device 110 during operation of the panel inspection apparatus 100. Therefore, the distance between the image capturing device 110 and the panel 190 to be detected can be converted according to the distance between the distance measuring device 120 and the panel 190 to be detected. For example, as shown in fig. 1, the field of view of the image capturing device 110 is located directly above it, i.e., the optical axis direction of the image capturing device 110 is the vertical direction, i.e., the Z-axis direction. Both the distance measuring device 120 and the image capturing device 110 may be disposed on the same horizontal plane, while the panel 190 to be inspected is disposed on another horizontal plane within the field of view of the image capturing device 110. Thus, in the vertical direction, the distance between both the distance measuring device 110 and the image capturing device 120 and the panel 190 to be detected is the same. The distance detected by the distance measuring device 120 can be regarded as the distance between the image capturing device 110 and the panel 190 to be detected. Alternatively, the distance measuring device 120 and the image capturing device 110 have a relative distance Δ d in the vertical direction, and the panel 190 to be detected is disposed at a horizontal plane within the field of view of the image capturing device 110. Thus, the distance measuring device 120 is farther from the panel 190 to be detected than the image capturing device 110 in the vertical direction, and the difference between the distances from the panel 190 to be detected is the distance Δ d. Further, Δ d may be subtracted from the distance detected by the distance measuring device 120 to obtain the distance between the image capturing device 110 and the panel 190 to be detected.
The first driving mechanism (not shown) is used to drive the distance measuring device 120 and the image capturing device 110 to move synchronously along the detection direction of the panel 190 to be detected, so that the image capturing device 110 captures an image of the panel to be detected along the detection direction. As shown in fig. 1, when image acquisition of the panel 190 to be detected is performed, the first driving mechanism drives the distance measuring device 120 and the image acquisition device 110 to continuously move together along the X-axis in a uniform speed forward direction, and during the movement, image data of different parts of the panel 190 to be detected is acquired to generate an image of the panel. In fig. 1, the X-axis forward direction is the detection direction of the panel 190 to be detected.
The second driving mechanism 130 is configured to drive the distance measuring device 120 and the image capturing device 110 to move synchronously along a first direction parallel to the optical axis of the image capturing device 110 based on the distance detected by the distance measuring device 120, so that the panel 190 to be detected is imaged at the focal point imaged by the image capturing device 110. In fig. 1, the second driving mechanism 130 drives the image capturing device 110 and the distance measuring device 120 to move along the Z-axis direction. By driving the second driving mechanism 130, the object distance of the image capturing device 110 can be changed, so that the panel 190 to be detected is always imaged at the focus of the image capturing device 110. The second driving mechanism 130 can drive the image capturing device 110 and the distance measuring device 120 to move synchronously, thereby ensuring that the distance measuring device 120 can always accurately detect the distance between the image capturing device 110 and the panel 190 to be detected.
It is understood that the first and second driving mechanisms 130 may include a motor or other moving components to achieve the driving function thereof. Illustratively, the panel detecting apparatus 100 may include a controller. The first and second driving mechanisms 130 may perform the above-described operations under the control of the controller. Alternatively, the first and second driving mechanisms 130 may each include a controller, under the control of the respective controller, to perform the above-described operations.
At any time when the panel inspection apparatus 100 operates, in the inspection direction of the panel to be inspected 190, the corresponding inspection point of the distance measurement device 120 on the panel to be inspected 190 is located in front of the intersection point of the optical axis of the image capture device 110 and the panel to be inspected 190. It is understood that during the panel inspection process, the image capturing device 110 and the distance measuring device 120 move together along the inspection direction of the panel 190 to be inspected. The distance measuring device 120 generally performs distance measurement on a certain position point of the panel 190 to be measured, and the position point can be called a detection point. For example, the distance measuring device may transmit a distance measuring signal to the panel to be detected 190 and determine the distance between the panel to be detected 190 and the image capturing device 110 according to the signal returned from the panel to be detected 190. The position point on the panel 190 to be detected where the ranging signal arrives is the detection point. When the image acquisition device 110 acquires the image of the panel 190 to be detected, the optical axis (the center line of the light beam) intersects the panel 190 to be detected, thereby forming an intersection point of the optical axis of the image acquisition device 110 and the panel 190 to be detected. In this embodiment, the detection point on the panel to be detected 190, for which the distance measuring device 120 is aimed, is always located in front of the intersection point of the optical axis of the image capturing device 110 and the panel to be detected 190. With the image acquisition, the distance measuring device 120 measures the distance of the same position point on the panel 190 to be detected, and the image acquisition device 110 acquires the image. That is, the ranging timing of the ranging device 120 is earlier than the image capturing timing of the image capturing device 110 for the same position on the panel 190 to be detected.
According to the above technical solution, in the process of panel detection, the image capturing device 110 is controlled to move based on the distance measurement result of the distance measuring device 120 moving synchronously with the image capturing device 110, so that the panel 190 to be detected is always located at the focus of the image capturing device 110. Thus, it is ensured to some extent that clear imaging is possible within the entire detection range of the panel 190 to be detected. And, the corresponding point of the distance measuring device 120 on the panel 190 to be detected is located in front of the corresponding point of the image capturing device 110 on the panel 190 to be detected. The distance measuring device 120 provides predicted information of subsequent changes of the panel 190 to be detected, such as the direction of warping, and the position of the image capturing device 110 can be adjusted in time accordingly. Thereby, the quality of the image is further ensured. In conclusion, the technical scheme can obtain the image of the panel 190 to be detected with better quality, and the accuracy of the panel detection result is improved.
Exemplarily, fig. 2 shows a schematic diagram of the distance measuring device 120 and the image capturing device 110 of the panel detecting apparatus 100 in an embodiment of the present invention.
In the embodiment shown in fig. 2, the distance measuring device 120 is a laser distance measuring sensor. The laser ranging sensor mainly utilizes the characteristics of high directivity, high monochromaticity, high brightness and the like of laser to realize contactless remote measurement. Because the panel 190 to be detected is approximately flat and straight, the laser straight line performance is good, and the measurement is performed on the flat panel 190 to be detected, so that the accuracy is high. In addition, the laser distance measuring sensor is simple and convenient to operate and high in speed; and the laser ranging has high brightness and low requirement on the environment. Thereby, the imaging clarity of the panel to be detected 190 is ensured. And further, the speed and the accuracy of panel detection of the panel detection device 100 are ensured, and the adaptability of the panel detection device 100 to the environment is improved.
Illustratively, the laser ranging sensor may be a triangular laser ranging sensor. The triangular laser ranging sensor is a ranging device with high speed and high precision performance. The triangular laser ranging sensor irradiates the panel to be detected 190 with a laser beam at a certain incident angle. The laser light is reflected and scattered at the surface of the panel 190 to be inspected. At another angle, reflected laser is focused and imaged by a lens, and light spots are imaged on a position sensor of a photosensitive coupling assembly (CCD). When the panel to be detected moves along the laser direction, i.e. the first direction, the light spot on the position sensor will move. The displacement of the light spot corresponds to the moving distance of the panel 190 to be detected. Based on this, the moving distance of the panel to be detected 190 can be calculated based on the spot displacement distance. Therefore, the triangular laser ranging sensor is very suitable for high-precision and short-distance measurement between the panel 190 to be detected and the image acquisition device 110. This ensures the sharpness of the image captured by the image capturing device 110 and the accuracy of the detection result of the panel detecting apparatus 100.
Illustratively, as shown in fig. 2, the ranging device 120 may include a laser emitting part 121 and a laser receiving part 122. The laser emitting portion 121 emits laser light to a position point P3 of the panel 190 to be detected, and this process is shown as an arrow 3-1. The position point P3 of the panel 190 to be inspected reflects the arriving laser light to the laser receiving section 122, a process shown as an arrow 3-2. The image pickup device 110 is located between the laser emitting part 121 and the laser receiving part 122. Light from the panel 190 to be inspected enters the image capture device 110, a process shown as arrow 2-1. As shown in fig. 2, the intersection point of the optical axis of the image capturing device 110 and the panel to be detected is a position point P2. In the detection direction of the panel 190 to be detected, i.e., the X-axis positive direction, the detection point P3 is located forward of the intersection point P2.
It is understood that the detection point of the distance measuring device 120 is generally located on a perpendicular bisector of a line segment between the laser emitting portion 121 and the laser receiving portion 122. In the above technical solution, the image capturing device 110 is located between the laser emitting part 121 and the laser receiving part 122. Thereby, the optical axis of the image acquisition arrangement 110 will be closer to the aforementioned perpendicular bisector. Furthermore, the distance between the detection point of the distance measuring device 120 and the intersection point of the optical axis of the image capturing device 110 and the panel 190 to be detected is relatively short. Therefore, at a moment after the distance measuring device 120 measures the distance of the detection point, the image acquisition device 110 whose position is adjusted according to the distance measuring result images the area where the detection point is located, thereby ensuring the imaging quality of the image acquisition device 110.
Referring again to fig. 2, the laser emitting portion 121, the image pickup device 110, and the laser receiving portion 122 in the panel inspection apparatus 100 are sequentially arranged in the aforementioned inspection direction. As described previously, the detection direction is shown as the X-axis forward direction in fig. 2.
The above arrangement of the laser emitting portion 121, the image capturing device 110 and the laser receiving portion 122 is simple and easy to implement, and it can be ensured that, for the same position point on the panel to be detected, the distance measuring operation performed by the distance measuring device 120 for the position point is earlier than the image capturing operation performed by the image capturing device 110 for the area around the position point.
Illustratively, the panel detecting apparatus 100 may further include a bracket 140 and an adjusting mechanism 150. FIG. 3 shows a partial schematic view of a panel inspection apparatus 100 according to one embodiment of the invention. As shown in fig. 3, the image capturing device 110 is fixed to the stand. An adjustment mechanism 150 is also secured to the bracket 140. The distance measuring device 120 is disposed on the adjustment mechanism 150.
The adjusting mechanism 150 may be used to adjust the position of the distance measuring device 120 along a second direction perpendicular to the optical axis of the image capturing device 110 and perpendicular to the detection direction. In the embodiment shown in fig. 3, the detection direction is the X-axis forward direction, the extending direction of the optical axis of the image capturing device 110 is the Z-axis direction, and the second direction is the Y-axis direction. By adjusting in the second direction, the distance measuring device 120 may be aligned with the image capturing device 110 in the second direction. In this way, the position of the detection point detected by the distance measuring device 120 can be used as an accurate basis for adjusting the distance between the image capturing device 110 and the panel 190 to be detected. The negative influence of the curvature of the device 190 to be detected in the second direction on the sharpness of the acquired image is avoided.
The adjustment mechanism 150 may also be used to adjust the position of the distance measuring device 120 along a first direction parallel to the optical axis, i.e., the Z-axis direction, so that the distance measuring device 120 is within the working range. It will be appreciated that the ranging device 120 has a range of operating ranges. In the working range, accurate distance data can be obtained; otherwise, the data obtained may be inaccurate or even difficult to obtain. The degree of deformation of the panel 190 to be detected, such as local sudden change and warpage of the panel 190 to be detected, etc., can be empirically expected. The adjustment mechanism 150 can make the distance between the panel 190 to be detected and the image capturing device 110 be within the working range of the distance measuring device 120 even if the above deformation occurs. Therefore, the distance measuring device 120 can accurately detect the distance between any deformation position point of the panel 190 to be detected and the image acquisition device 110, so as to drive the image acquisition device 110 to a proper position and acquire a clearer image.
For example, before the panel 190 to be detected starts to be detected, for example, when the panel detecting apparatus 100 is installed and debugged, the image capturing device 110 may be first fixedly installed on the bracket 140, so that the image capturing device 110 is located at a position where the panel 190 to be detected can be clearly photographed, for example, a distance of 10mm from the panel 190 to be detected. The adjusting mechanism 150 is then also attached to the holder 140, and the distance measuring device is fixed to the adjusting mechanism 150. The position of the distance measuring device 120 is adjusted by the adjusting mechanism 150. As previously described, the position of the ranging device may be adjusted in the first and second directions in preparation for subsequent panel detection.
With the above technical solution, before starting to detect the panel 190 to be detected, the user may adjust the position of the distance measuring device 120 in the second direction by using the adjusting mechanism 150, so as to align the distance measuring device 120 and the image capturing unit 110. Thereby, it is avoided that the distance measuring device 120 acquires position data of one position point, the position of the image acquisition unit 110 is adjusted according to the position data, but the image acquisition unit 110 acquires an image of an area near another position point later. This ensures that the distance detected by the distance measuring device 120 can accurately provide a basis for adjusting the position of the image capturing device 110, thereby ensuring the imaging quality and the panel detection quality. Rather than the area it captures a point of position that the image capture unit 110 captures while inspecting the panel to be inspected. The user utilizes the adjusting structure 150 to adjust the position of the distance measuring device 120 in the first direction, so that the problem that the distance measuring device 120 cannot measure the distance accurately due to warping, pits and the like on the panel 190 to be detected in the image acquisition process is solved, and further image definition reduction caused by the inaccurate distance measuring device is avoided, and the detection cannot be completed smoothly. In summary, the presence of the bi-directional adjustment mechanism 150 ensures the imaging quality of the image capture device 110 and the panel detection quality of the panel detection apparatus 100.
Illustratively, the adjustment mechanism 150 may include a first adjustment rail fixed to the bracket 140 and a first adjustment slider slidably coupled to the first adjustment rail. The adjustment mechanism 150 may further include a second adjustment rail fixed to the first adjustment block and a second adjustment block slidably coupled to the second adjustment rail. One of the first adjustment rail and the second adjustment rail extends in the second direction and the other extends in the first direction. The distance measuring device 120 may be fixed to the second adjustment slider. It can be understood that the position of the distance measuring device 120 can be conveniently and rapidly adjusted in the first direction and the second direction by adjusting the position of the first adjusting slider on the first adjusting guide rail and the position of the second adjusting slider on the second adjusting guide rail.
Preferably, the adjustment mechanism in the panel inspection apparatus 100 may be a displacement platform. The moving precision of the displacement platform is high and can even reach the micron level. The position of the distance measuring device 120 is adjusted by using the displacement platform, so that the adjustment accuracy is high, the operation is convenient, and the cost is low. Therefore, the detection precision and the cost control of the panel detection equipment are ensured.
Illustratively, in the panel inspection apparatus 100, the second driving mechanism 130 is connected to the bracket 140, and the bracket 140 is movable in the first direction by the driving of the second driving mechanism 130. Referring again to fig. 3, the second driving mechanism 130 is connected to the bracket 140. Since the image capturing device 110 is fixed on the bracket 140 and the distance measuring device 120 is fixed on the bracket 140 via the adjusting mechanism, the second driving mechanism 130 drives the bracket 140 to move along the first direction, and the bracket 140 can drive the image capturing device 110 and the distance measuring device 120 to move along the first direction. According to the scheme, the definition of the image obtained in the image acquisition process is guaranteed, and meanwhile, the structure is simple, the production cost is low, and the use by a user is convenient.
Illustratively, referring again to fig. 1, the panel detecting apparatus 100 may further include: a track 160 and a carriage 170. The track 160 extends in the detection direction. The carriage 170 is slidably connected to the rail 160, wherein the bracket 140 and the second driving mechanism 130 are both disposed on the carriage 170, and the carriage 170 is movable along the rail 160 by the driving of the first driving mechanism. It is understood that the carriage 170 is moved along the rail 160 by the first driving mechanism to drive the image capturing device 110 via the bracket to continuously capture images of various portions of the panel 190 to be detected. This technical scheme is when guaranteeing to detect the detection precision of treating the panel, simple to operate, and the maintenance of being convenient for has brought the convenience for the user uses.
According to another aspect of the present invention, there is provided a panel inspection method, and fig. 4 shows a schematic flow chart of the panel inspection method according to an embodiment of the present invention. The panel inspection method may be implemented using the panel inspection apparatus 100 described above. As shown in fig. 4, the panel inspection method may include the following steps.
And S410, acquiring an image of the panel to be detected along the detection direction of the panel to be detected by using an image acquisition device. In the process of collecting the image of the panel to be detected along the detection direction of the panel to be detected by using the image collecting device, the distance measuring device and the image collecting device synchronously move along the detection direction and the distance between the distance measuring device and the panel to be detected is detected by using the distance measuring device, and the distance measuring device and the image collecting device are driven to synchronously move along a first direction parallel to the optical axis of the image collecting device based on the distance so that the panel to be detected is positioned at the focus of the image collecting device. At any moment, in the detection direction of the panel to be detected, the corresponding detection point of the distance measuring device on the panel to be detected is positioned in front of the intersection point of the optical axis of the image acquisition device and the panel to be detected.
And step S420, detecting the panel to be detected according to the image. Based on the image, whether the appearance of the panel to be detected meets the standard, the quantity and distribution of the conductive particles in the panel, whether foreign matters exist or not and the like can be detected. From this, it can be determined whether the quality of the panel to be detected is acceptable.
A person skilled in the art can understand specific implementation schemes and beneficial technical effects of the panel detection method by reading the above description related to the panel detection device, and details are not described herein for brevity.
Although the illustrative embodiments have been described herein with reference to the accompanying drawings, it is to be understood that the foregoing illustrative embodiments are merely exemplary and are not intended to limit the scope of the invention thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention. All such changes and modifications are intended to be included within the scope of the present invention as set forth in the appended claims.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. A skilled artisan may use different autofocus devices to implement the described functionality for each particular application, but such implementation should not be considered beyond the scope of the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and autofocus device may be implemented in other ways. For example, the above-described device embodiments are merely illustrative, and for example, the division of the units is only one logical functional division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another device, or some features may be omitted, or not executed.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known autofocus devices, structures, and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the invention and aiding in the understanding of one or more of the various inventive aspects. However, the autofocus device of the present invention should not be interpreted to reflect the following intention: that the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
It will be appreciated by those skilled in the art that all of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any autofocus device or apparatus so disclosed, may be combined in any combination, except where mutually exclusive features are indicated. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments may be used in any combination.
The various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some of the modules in a panel detection apparatus according to embodiments of the present invention. The present invention may also be embodied as apparatus programs (e.g., computer programs and computer program products) for executing a portion or all of the autofocus apparatus described herein. Such programs implementing the present invention may be stored on computer-readable media or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention may be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
The above description is only for the specific embodiment of the present invention or the description thereof, and the protection scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the protection scope of the present invention. The protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A panel inspection apparatus, comprising:
the image acquisition device is used for acquiring an image of the panel to be detected;
the distance measuring device is used for detecting the distance between the image acquisition device and the panel to be detected, wherein at any moment, in the detection direction of the panel to be detected, the corresponding detection point of the distance measuring device on the panel to be detected is positioned in front of the intersection point of the optical axis of the image acquisition device and the panel to be detected;
the first driving mechanism is used for driving the distance measuring device and the image acquisition device to synchronously move along the detection direction, so that the image acquisition device acquires the image of the panel to be detected along the detection direction;
and the second driving mechanism is used for driving the distance measuring device and the image acquisition device to synchronously move along a first direction parallel to the optical axis of the image acquisition device based on the distance so as to enable the panel to be detected to be imaged at the focus of the image acquisition device.
2. The panel inspection apparatus of claim 1, wherein the distance measuring device includes a laser emitting portion and a laser receiving portion, and the image pickup device is located between the laser emitting portion and the laser receiving portion.
3. The panel inspection apparatus according to claim 2, wherein the laser emitting portion, the image pickup device, and the laser receiving portion are arranged in this order along the inspection direction.
4. The panel inspection apparatus of claim 1, wherein the ranging device is a laser ranging sensor.
5. The panel detecting apparatus of claim 4, wherein the laser ranging sensor is a triangular laser ranging sensor.
6. The panel inspection apparatus according to any one of claims 1 to 5, further comprising:
the image acquisition device is fixed on the bracket; and
the adjusting mechanism is fixed on the support, the distance measuring device is arranged on the adjusting mechanism, and the adjusting mechanism is used for adjusting the position of the distance measuring device along a second direction which is perpendicular to the optical axis and the detection direction so as to enable the distance measuring device to be aligned with the image acquisition device in the second direction; and the adjusting mechanism is also used for adjusting the position of the distance measuring device along the first direction so as to enable the distance measuring device to be in the working range.
7. The panel testing apparatus of claim 6, wherein the adjustment mechanism is a displacement platform.
8. The panel inspection apparatus of claim 6, wherein the second drive mechanism is coupled to the carriage, the carriage being movable in the first direction under drive of the second drive mechanism.
9. The panel inspection apparatus of claim 8, further comprising:
a track extending along the detection direction;
a carriage slidably connected to the track,
the bracket and the second driving mechanism are arranged on the carrier seat, and the carrier seat is driven by the first driving mechanism to move along the track.
10. A panel inspection method, comprising:
collecting an image of the panel to be detected along the detection direction of the panel to be detected by using an image collecting device;
detecting the panel to be detected according to the image;
in the process of acquiring an image of a panel to be detected by using an image acquisition device along a detection direction of the panel to be detected, a distance measurement device and the image acquisition device synchronously move along the detection direction and detect a distance between the distance measurement device and the panel to be detected by using the distance measurement device, and the distance measurement device and the image acquisition device are driven to synchronously move along a first direction parallel to an optical axis of the image acquisition device based on the distance, so that the panel to be detected is located at a focus of the image acquisition device, wherein at any moment, in the detection direction of the panel to be detected, a corresponding detection point of the distance measurement device on the panel to be detected is located in front of an intersection point of the optical axis of the image acquisition device and the panel to be detected.
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| CN202111545306.1A CN114384092A (en) | 2021-12-16 | 2021-12-16 | Panel detection device and panel detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111545306.1A CN114384092A (en) | 2021-12-16 | 2021-12-16 | Panel detection device and panel detection method |
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