CN111650201B - Detection device and detection method - Google Patents
Detection device and detection method Download PDFInfo
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- CN111650201B CN111650201B CN202010680899.1A CN202010680899A CN111650201B CN 111650201 B CN111650201 B CN 111650201B CN 202010680899 A CN202010680899 A CN 202010680899A CN 111650201 B CN111650201 B CN 111650201B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Abstract
The present disclosure relates to a detection device and a detection method, for detecting a curved screen, where the curved screen includes a planar portion and a curved portion located at an edge of the planar portion, and the detection device includes: the device comprises a detection table, an image acquisition assembly and an optical assembly; the detection table is provided with a containing part, the containing part is used for placing a curved surface screen to be detected, the image acquisition component is opposite to the containing part, and the image acquisition component is used for acquiring a display image of the curved surface screen to be detected; the optical assembly comprises a plurality of optical units, and the optical units are configured to be capable of adjusting the propagation direction of light emitted by the curved surface part of the curved surface screen to be detected, so that the image acquisition assembly can acquire images of the curved surface part. The technical scheme can realize detection of the curved screen.
Description
Technical Field
The disclosure relates to the technical field of screen detection, in particular to a detection device and a detection method.
Background
With the development and progress of technology, curved screens are increasingly used in various electronic devices. In practical applications, the curved screen needs to be detected and then used in electronic devices. At present, a display image of a curved screen is generally obtained through a camera and other devices, and whether the screen is qualified or not is judged according to the display image of the curved screen. However, since the curved surface screen has a plane portion and a curved surface portion, when the curved surface screen display image is acquired through a camera or other equipment, the image of the curved surface portion and the plane portion cannot be obtained at the same time, so that the plane portion can acquire the display image through the camera for display, the curved surface portion can be detected only manually, and further the problems that the detection standard of the curved surface portion is different, misjudgment and omission are easy are caused.
Disclosure of Invention
The disclosure aims to provide a detection device and a detection method, and further solve the problems of different detection standards and easy erroneous judgment and missed judgment caused by manual detection of curved surfaces in the related art.
According to an aspect of the present disclosure, there is provided a detection apparatus for detecting a curved screen including a planar portion and a curved portion located at an edge of the planar portion, the detection apparatus comprising:
the detection device comprises a detection table, wherein the detection table is provided with a containing part, and the containing part is used for containing a curved surface screen to be detected;
the image acquisition assembly is opposite to the accommodating part and is used for acquiring an image of the curved screen to be detected;
the optical assembly comprises a plurality of optical units, and the optical units are configured to be capable of adjusting the propagation direction of light emitted by the curved surface part of the curved surface screen to be detected, so that the image acquisition assembly can acquire images of the curved surface part.
According to another aspect of the present disclosure, there is provided a detection method for detecting a curved screen, the detection method including:
controlling a plurality of optical units to adjust the light emitted by the curved surface part according to the curvature of the curved surface part of the curved surface screen to be detected;
acquiring a test image by using an image acquisition assembly, wherein the test image is a display image of the curved screen to be detected;
and determining whether the curved screen to be detected is qualified or not according to the test image.
According to the detection device provided by the embodiment of the disclosure, the propagation direction of light emitted by the curved surface part of the curved surface screen to be detected is adjusted through the plurality of optical units, so that the image acquisition assembly opposite to the accommodating part of the detection platform can acquire the display image of the curved surface part and the plane part of the display screen to be detected at the same time, the display of the curved surface screen to be detected can be detected through the image, the problems that the detection standards are different and misjudgment and omission judgment are easy due to manual detection of the curved surface part in the related art are solved, and the accuracy and the detection efficiency of the detection of the curved surface screen can be improved.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description, serve to explain the principles of the disclosure. It will be apparent to those of ordinary skill in the art that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived from them without undue effort.
Fig. 1 is a schematic structural diagram of a first detection device according to an embodiment of the disclosure;
FIG. 2 is a schematic structural view of a first optical component according to an embodiment of the present disclosure;
FIG. 3 is a schematic top view of a first optical assembly provided by an embodiment of the present disclosure;
fig. 4 is a schematic structural diagram of a second detection device according to an embodiment of the disclosure;
FIG. 5 is a schematic diagram of a second optical assembly according to an embodiment of the present disclosure;
FIG. 6 is a schematic top view of a second optical assembly provided by an embodiment of the present disclosure;
fig. 7 is an equivalent circuit diagram of a driving unit according to an embodiment of the present disclosure;
fig. 8 is a schematic structural diagram of a third detection device according to an embodiment of the disclosure;
fig. 9 is a control block diagram of a detection device according to an embodiment of the present disclosure;
fig. 10 is a flowchart of a detection method according to an embodiment of the disclosure.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. However, the exemplary embodiments can be embodied in many 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, and will fully convey the concept of the example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus detailed descriptions thereof will be omitted.
Although relative terms such as "upper" and "lower" are used in this specification to describe the relative relationship of one component of an icon to another component, these terms are used in this specification for convenience only, such as in terms of the orientation of the examples described in the figures. It will be appreciated that if the device of the icon is flipped upside down, the recited "up" component will become the "down" component. When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure through another structure.
The terms "a," "an," "the," "said" and "at least one" are used to indicate the presence of one or more elements/components/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. in addition to the listed elements/components/etc.
In this exemplary embodiment, first, a detection device is provided for detecting a curved screen 100, as shown in fig. 1, where the curved screen 100 may include a planar portion 110 and a curved portion 120 located at an edge of the planar portion 110, and the curved screen 100 may include one or more curved portions 120. When the curved screen 100 includes a curved portion 120, the curved portion 120 may be located at one edge of the planar portion 110. When the curved screen 100 includes two curved portions 120, the two curved portions 120 may be located at two parallel edges of the planar portion 110, respectively.
The inspection apparatus includes an inspection station 200, an image acquisition assembly 300, and an optical assembly 400. The detecting table 200 is provided with a containing part 210, and the containing part 210 is used for placing the curved surface screen 100 to be detected; the image acquisition assembly 300 is opposite to the accommodating portion 210, and the image acquisition assembly 300 is used for acquiring a display image of the curved screen 100 to be detected; the optical assembly 400 includes a plurality of optical units 410, and the plurality of optical units 410 are configured to be capable of adjusting a propagation direction of light emitted from the curved surface portion 120 of the curved surface screen 100 to be detected, so that the image capturing assembly 300 can capture an image of the curved surface portion 120.
According to the detection device provided by the embodiment of the disclosure, the propagation direction of the light emitted by the curved surface portion 120 of the curved surface screen 100 to be detected is adjusted through the plurality of optical units 410, so that the image acquisition assembly 300 opposite to the accommodating portion 210 of the detection table 200 can acquire the display image of the curved surface portion 120 and the plane portion 110 of the display screen to be detected at the same time, the display of the curved surface screen 100 to be detected can be detected through the image, the problems that the detection standards are different and misjudgment and omission is easy due to manual detection of the curved surface portion 120 in the related art are solved, and the detection accuracy and detection efficiency of the curved surface screen 100 can be improved.
The following will describe each part of the detection device provided in the embodiments of the present disclosure in detail:
as shown in fig. 2, the optical assembly 400 may include an optical unit 410, a driving device 420 connected to the optical unit 410, and a driving circuit 430 connected to the driving device 420, the driving device 420 for driving the optical unit 410 to deflect, and the driving circuit 430 for providing a driving signal to the driving device 420.
As shown in fig. 3, the optical unit 410 may include a reflecting mirror 411, where the optical assembly 400 includes a plurality of reflecting mirrors 411, and the plurality of reflecting mirrors 411 are arranged in an array; the driving device includes a plurality of Micro-Electro-mechanical systems (MEMS) each of which is correspondingly connected to a mirror 411, and the MEMS are used to drive the mirror 411 to deflect.
Referring to fig. 2, the optical assembly 400 may include a substrate 14, a driving circuit layer 13, a driving device layer 12, and a reflective layer 11. The driving circuit layer 13 is disposed on the substrate 14, the driving device layer 12 is disposed on a side of the driving circuit layer 13 away from the substrate 14, and the reflective layer 11 is disposed on a side of the driving device layer 12 away from the driving circuit layer 13.
The substrate 14 may be a glass substrate 14, a silicon substrate 14, or the like. The driving circuit layer 13 has a driving circuit 430 formed therein, and the driving circuit 430 may include a plurality of driving units and connection lines. The driving units are distributed in an array, and each driving unit corresponds to a reflecting mirror 411. For example, the projection of the drive unit onto the reflective layer 11 is located in the region of the corresponding mirror 411.
The driving unit may include a switching circuit, an input terminal of the switching circuit is connected to a power signal, a control terminal of the switching circuit is connected to a control signal, and the switching circuit is turned on in response to the control signal to transmit the power signal to the driving device layer 12. For example, the switching circuit may include one or more MOS transistors and capacitors. On the basis of this, a plurality of power supply signal lines for transmitting power supply signals and a plurality of control signal lines for transmitting control signals may be provided in the driving circuit layer 13.
The driving device layer 12 may include a plurality of mems, which may be distributed in an array, and each mems is correspondingly connected to a driving unit. The mems may include a driving mechanism and a hinge mechanism, where the driving mechanism is connected to the driving unit, and the hinge mechanism is connected to the mirror 411, and the driving mechanism drives the mirror 411 to deflect through the hinge mechanism. Of course, in practical applications, the driving device 420 may also include other driving devices, which are not limited to the embodiment of the disclosure.
The reflective layer 11 may include a plurality of individual mirrors 411, each mirror 411 being deflected by a microelectromechanical system drive. The mirror 411 may be a pixel-level mirror 411, and the light of the curved portion 120 of the curved screen 100 is deflected by controlling the pixel-level mirror 411 so that the light of the curved portion 120 can be transmitted to the image capturing assembly 300. And each pixel is independent, and can reflect the light rays of the curved surface part 120 with different curvatures to the image acquisition assembly 300.
For example, the optical assembly 400 may be a Digital Micromirror Device (DMD) on which a plurality of mirrors 411 are disposed, and the deflection angle of the mirrors 411 may be adjusted, and in practical applications, the deflection angle of the mirrors 411 may be controlled according to the positional relationship between the mirrors 411 and the curved surface portion 120.
Or as shown in fig. 4 and 5, the optical unit 410 includes an optical lens 452, and the optical assembly 400 includes a plurality of optical lenses 452, the plurality of optical lenses 452 being distributed in an array; the driving device 420 includes: a plurality of mems, each associated with an optical lens 452, are used to drive the deflection of the mirror 411.
The optical assembly 400 may include a substrate 14, a driving circuit layer 13, a driving device layer 12, and a lens layer 16. The driving circuit layer 13 is disposed on the substrate 14, the driving device layer 12 is disposed on a side of the driving circuit layer 13 away from the substrate 14, and the lens layer 16 is disposed on a side of the driving device layer 12 away from the driving circuit layer 13.
The substrate 14 may be a glass substrate 14, a silicon substrate 14, or the like. The driving circuit layer 13 has a driving circuit 430 formed therein, and the driving circuit 430 may include a plurality of driving units and connection lines. The driving units are distributed in an array, and each driving unit corresponds to a reflecting mirror 411. For example, the projection of the drive unit onto the reflective layer 11 is located in the region of the corresponding mirror 411.
The driving unit may include a switching circuit, an input terminal of the switching circuit is connected to a power signal, a control terminal of the switching circuit is connected to a control signal, and the switching circuit is turned on in response to the control signal to transmit the power signal to the driving device layer 12. For example, the switching circuit may include one or more MOS transistors and capacitors. On the basis of this, a plurality of power supply signal lines for transmitting power supply signals and a plurality of control signal lines for transmitting control signals may be provided in the driving circuit layer 13.
The driving device layer 12 may include a plurality of mems, which may be distributed in an array, and each mems is correspondingly connected to a driving unit. The mems may include a driving mechanism and a hinge mechanism, where the driving mechanism is connected to the driving unit, and the hinge mechanism is connected to the mirror 411, and the driving mechanism drives the mirror 411 to deflect through the hinge mechanism. Of course, in practical applications, the driving device 420 may also include other driving devices, which are not limited to the embodiment of the disclosure.
The lens layer 16 may include a plurality of individual optical lenses 452, each optical lens 452 being deflected by a microelectromechanical system drive. The optical lens 452 may be a pixel level optical lens 452, such that light rays of the curved surface portion 120 of the curved surface screen 100 can be transmitted to the image capturing assembly 300 by controlling the pixel level optical lens 452 to deflect light rays of the curved surface portion 120. And each pixel is independent, and can reflect the light rays of the curved surface part 120 with different curvatures to the image acquisition assembly 300.
As shown in fig. 6, the lens layer 16 may further include a connection unit 451, the connection unit 451 being provided at one side of the optical lens 452, and the connection unit 451 being connected to the optical lens 452, the micro electro mechanical system being connected to the connection unit 451. The connection unit 451 and the optical lens 452 are disposed adjacent. The optical lenses 452 may be distributed in an array, and the connection units 451 may be distributed in an array, and one row of optical lenses 452 is connected to one row of connection units 451. The connection unit 451 may be made of an opaque material, or the connection unit may be covered with an opaque light-shielding layer, such as a black material layer.
On the basis of this, the substrate 14 may be a transparent substrate 14, and the driving circuit layer 13 may be a transparent driving circuit layer 13. The driving device layer 12 may include a light-transmitting region where the projection of the connection unit 451 onto the driving device layer 12 is located and a light-impermeable region where the projection of the optical lens 452 onto the driving device layer 12 is located.
The driving circuit layer 13 may also include a light-transmitting region and an opaque region, where the light-transmitting region on the driving circuit layer 13 corresponds to the light-transmitting region on the driving device layer 12, that is, the projection of the light-transmitting region on the driving circuit layer 13 on the driving device layer 12 is located in the light-transmitting region on the driving device layer 12. The opaque region on the driving circuit layer 13 corresponds to the opaque region on the driving device layer 12, i.e., the projection of the opaque region on the driving circuit layer 13 onto the driving device layer 12 is located at the opaque region on the driving device layer 12. The driving units in the driving circuit layer 13 are provided in the opaque region of the driving circuit layer 13.
The optical lens 452 may be a convex lens, a concave lens, a planar lens, or the like, and the light emitted from the curved surface portion 120 of the curved surface screen 100 can pass through the optical lens 452, and the optical lens 452 changes the propagation direction of the light emitted from the curved surface portion 120. The light emitted from the curved surface 120 is transmitted to the image acquisition assembly 300 through the optical lens 452.
The array-type distributed optical units 410 (mirrors 411 or optical lenses 452) may be deflected by progressive scanning, where the driving circuit 430 turns to provide power signals to drive the mems. Of course, in practical applications, the optical units 410 distributed in an array may be deflected by a whole plate, which is not specifically limited in the embodiments of the present disclosure.
For example, when the array-type distributed optical unit 410 is a progressive scan type deflection, the driving circuit 430 in the driving unit may be a circuit as shown in fig. 7, and the driving circuit 430 may include a driving switch Td, a storage capacitor C, and a scan switch Ts. The driving switch Td has a first terminal connected to the power supply VDD and a second terminal connected to the optical unit 420. The first end of the scan switch Ts is connected to the data signal Vdata, the second end of the scan switch Ts is connected to the control end of the driving switch Td, and the control end of the scan switch Ts is connected to the scan control signal Sn. The first end of the energy storage capacitor C is connected with the control end of the driving switch Td, and the second end of the energy storage capacitor C is connected with the first power supply signal VDD end. And (c) a first step. The scan switch Ts is turned on in response to the scan control signal Sn, writes the data signal Vdata into the storage capacitor C, drives the switch Td to be turned on under the control of the data signal Vdata in the storage capacitor C, and the first power signal VDD is transmitted to the optical unit 410.
The driving switch Td and the scanning switch Ts may be MOS transistors, a first end of each MOS transistor may be a source, a second end may be a drain, and a control end may be a gate. Or the first end of each MOS tube can be a drain electrode, the second end can be a source electrode, and the control end can be a grid electrode. Each MOS transistor may be an enhancement or depletion MOS transistor, which is not specifically limited in the embodiments of the present disclosure.
At this time, the driving circuit layer 13 may be provided with a data signal line, a scanning signal line, and a power signal line. The data signal line and the scan signal line may be disposed perpendicular to each other. In practical testing, because the included angle between the pixel units on the straight line of the extending direction of the curved surface portion 120 and the image capturing assembly 300 is unchanged, a row of optical units 410 arranged along the extending direction of the curved surface portion 120 in the optical assembly 400 can receive the same data signal, that is, can provide the data signal through the same data line, so that the wiring space can be saved.
The detecting table 200 is provided with a containing portion 210, the containing portion 210 is used for placing the curved surface screen 100 to be detected, and the optical assembly 400 is in sliding connection with the detecting table 200. Taking the curved panel 100 as an example, the curved portion 120 includes two curved portions, and the optical assemblies 400 are disposed on two sides of the accommodating portion 210.
When the optical unit 410 includes the reflecting mirror 411, the optical assembly 400 is disposed on the side of the detection stage 200 where the accommodating portion 210 is disposed. The optical assembly 400 is obliquely disposed to the inspection stage 200. The optical assembly 400 extends outward from an end of the detection stage 200, wherein outward refers to a direction along the surface away from the accommodating portion 210. The two optical assemblies 400 on the inspection stage 200 are respectively disposed at two sides of the accommodating portion 210, and one end of each optical assembly 400 away from the inspection stage 200 extends outwards.
When the optical unit 410 includes the optical lens 452, the optical assembly 400 may be opposite to the accommodating portion 210 of the detection stage 200, and a projection area of the optical assembly 400 on the accommodating portion 210 and a projection of the curved surface portion 120 of the curved surface screen 100 on the accommodating portion 210 overlap. In the initial state, the optical axis of the optical lens 452 may be perpendicular to the surface of the accommodating portion 210, and the respective deflection angles of the optical lens 452 may be determined according to the curvature of the curved surface screen 100 and the positional relationship of the curved surface portion 120, the optical assembly 400, and the image capturing assembly 300 when in the detection state.
The optical assembly 400 is slidably connected to the inspection stage 200, and an exemplary embodiment may include a chute on the inspection stage 200, and a sliding portion on the optical assembly, the sliding portion being mounted to the chute and capable of moving within the chute. A motor may also be provided on the inspection station 200, and the motor is connected to the optical assembly 400 via a transmission mechanism. The power output by the motor is transmitted to the optical assembly 400 through the transmission mechanism, and the optical assembly 400 is driven to move.
The transmission mechanism can be a screw rod sliding block mechanism, the screw rod is connected with the output shaft of the motor, the sliding block is connected with the optical assembly 400, and the optical assembly 400 is driven to move through the screw rod sliding block. Or the transmission mechanism can be a gear-rack mechanism, the gear is connected with an output shaft of the motor, the rack is connected with the optical assembly 400, the gear and the rack are meshed, and the motor drives the rack to do linear motion so as to drive the optical assembly 400 to move.
When the inspection apparatus includes two optical assemblies 400, one motor may be provided on the inspection stage 200. The screw rod can be provided with thread sections with opposite rotation directions. Each optical assembly 400 is coupled to a slider that cooperates with the threaded segments in opposite directions of rotation, respectively, to allow simultaneous inward or outward movement of both optical assemblies 400.
The detecting table 200 may be provided with a sensor for detecting whether the curved screen 100 to be detected is placed on the accommodating portion 210, and a limiting module for fixing the curved screen 100 to be detected to the accommodating portion 210. The sensor may be provided in the accommodating portion 210, and the sensor may be a photoelectric sensor, a pressure sensor, a hall sensor, or the like. The limiting module may include a suction cup, where the suction cup may be disposed on the accommodating portion 210, and when the curved screen 100 to be detected is disposed on the accommodating portion 210, the suction cup adsorbs the curved screen 100 to be detected.
The accommodating part 210 provided in the embodiment of the present disclosure may be a plane flush with the surface of the table, or the accommodating part 210 may be a plane protruding from the surface of the table or recessed from the surface of the table, and the suction cup may be disposed at a central position of the accommodating part 210. The limiting module may further include a limiting block, where the limiting block is disposed on the accommodating portion 210 and is slidably connected with the accommodating portion 210, so as to adapt to the testing of the curved screen 100 with different sizes.
It will be appreciated that, as shown in fig. 8, the detection device provided in the embodiment of the disclosure may further include a transparent cover plate 500, where the transparent cover plate 500 is disposed on a side of the detection platform 200 near the image capturing assembly 300, and the optical assembly 400 is connected to the transparent cover plate 500.
Wherein the optical assembly 400 and the transparent cover plate 500 may be slidably connected, and the transparent cover plate 500 and the inspection station 200 may be detachably connected. When the transparent cover plate 500 is connected with the detection table 200, the curved screen 100 can be detected, and when the transparent cover plate 500 is detached, the flat screen can be detected, so that the applicability of the detection device is improved. For example, the transparent cover 500 may be rotatably connected to the inspection table 200, and when the curved screen 100 needs to be inspected, the transparent cover 500 and the optical assembly 400 are placed at the inspection position, and when the flat screen needs to be inspected, the transparent cover 500 is rotated to the non-inspection position.
The transparent cover 500 may include a detection area for detection, including an area opposite to the receiving portion 210 and an optical assembly 400 mounting area, and an edge area. The edge region is located at one or more edges of the detection region. A motor driving the optical assembly 400 to slide on the transparent cover plate 500 may be provided at the edge region.
The motor is coupled to the optical assembly 400 via a transmission. The power output by the motor is transmitted to the optical assembly 400 through the transmission mechanism, and the optical assembly 400 is driven to move. The transmission mechanism can be a screw slider mechanism, the screw is connected with the output shaft of the motor, the slider is connected with the optical assembly 400, and the optical assembly 400 is driven to move through the screw slider. Or the transmission mechanism can be a gear-rack mechanism, the gear is connected with an output shaft of the motor, the rack is connected with the optical assembly 400, the gear and the rack are meshed, and the motor drives the rack to do linear motion so as to drive the optical assembly 400 to move.
When two optical assemblies 400 are provided on the transparent cover plate 500, one motor may be provided on the inspection stage 200. The screw rod can be provided with thread sections with opposite rotation directions. Each optical assembly 400 is coupled to a slider that cooperates with the threaded segments in opposite directions of rotation, respectively, to allow simultaneous inward or outward movement of both optical assemblies 400.
Further, as shown in fig. 9, the detection device provided in the embodiment of the present disclosure may further include a control module 600, where the control module 600 may be connected to the optical assembly 400 and the image capturing assembly 300, respectively. The control module 600 may be connected to the driving circuit 430 in the optical assembly 400 to transmit driving signals (one or more of power signals, scan signals, and data signals) to the driving circuit 430. The control module 600 is connected to the image acquisition assembly 300 to receive the display image of the curved screen 100 acquired by the image acquisition assembly 300 and detect the display image of the curved screen 100. Further, whether the curved screen 100 is qualified or not can be judged by one or more of a spotted judgment method, a point-by-point scanning contrast analysis and a boundary judgment method.
The driving signal may be determined according to the size of the curved surface 120 of the curved surface screen 100 and the positional relationship among the curved surface screen 100, the optical assembly 400 and the image capturing assembly 300. The deflection of the optical unit 410 (mirror 411 or optical lens 452) is adjusted by the driving signal to adjust the light of the curved surface portion 120 to the image capturing assembly 300.
The control module 600 may include a processing unit, a signal providing unit, a power supply unit, and the like. The signal providing unit may be TCON (timing control module 600), and the signal providing unit may be connected to the curved screen 100 to be detected to provide a gate driving signal, a source driving signal, etc. for the curved screen 100 to be detected. The power unit is used for providing power for the detection device and the curved screen 100, and the power unit may be a battery or other power source.
In the embodiment of the present disclosure, the image acquisition assembly 300 may include a camera, a bracket, a storage unit, a communication unit, and the like, where the camera is mounted on the bracket, the storage unit and the camera are connected to receive and store an image acquired by the camera, and the communication unit is used to implement communication between the image acquisition assembly 300 and the control module 600. The communication unit may be a wired communication unit such as an I/O interface or the like. The communication unit may also be a wireless communication unit, such as a bluetooth communication unit, an infrared communication unit, a WiFi communication unit, and the like.
It should be noted that, the detection device provided in the embodiment of the present disclosure may be used for detecting the curved screen 100, and of course, in practical application, the detection device may also be used for detecting a planar screen. The detection device provided in the embodiments of the present disclosure may also be a split type structure, where the optical assembly 400 is mounted on the detection stage 200 during detection. The detection device provided in the embodiments of the present disclosure may be used for detecting an OLED (organic light-Emitting Diode) display screen, and may also be applied to detecting an LCD (Liquid Crystal Display ) display screen, which is not particularly limited in the embodiments of the present disclosure.
According to the detection device provided by the embodiment of the disclosure, the propagation direction of the light emitted by the curved surface portion 120 of the curved surface screen 100 to be detected is adjusted through the plurality of optical units 410, so that the image acquisition assembly 300 opposite to the accommodating portion 210 of the detection table 200 can acquire the display image of the curved surface portion 120 and the plane portion 110 of the display screen to be detected at the same time, the display of the curved surface screen 100 to be detected can be detected through the image, the problems that the detection standards are different and misjudgment and omission is easy due to manual detection of the curved surface portion 120 in the related art are solved, and the detection accuracy and detection efficiency of the curved surface screen 100 can be improved.
The exemplary embodiments of the present disclosure also provide a detection method for detecting a curved screen 100, as shown in fig. 10, the detection method may include the following steps:
step S101, controlling a plurality of optical units to adjust the light emitted by the curved surface part according to the curvature of the curved surface part of the curved surface screen to be detected;
step S103, acquiring a test image by using an image acquisition component, wherein the test image is a display image of a curved screen to be detected;
step S105, determining whether the curved screen to be detected is qualified or not according to the test image.
According to the detection method provided by the embodiment of the disclosure, the propagation direction of the light emitted by the curved surface portion 120 of the curved surface screen 100 to be detected is adjusted through the plurality of optical units 410, so that the image acquisition assembly 300 opposite to the accommodating portion 210 of the detection platform 200 can simultaneously acquire the display image of the curved surface portion 120 and the plane portion 110 of the display screen to be detected, and the display of the curved surface screen 100 to be detected can be detected through the image, so that the problems of different detection standards and easy erroneous judgment and omission judgment caused by manual detection of the curved surface portion 120 in the related art are solved, and the detection accuracy and detection efficiency of the curved surface screen 100 can be improved.
The following will describe each step of the detection method provided in the embodiment of the present disclosure in detail:
in step S101, the plurality of optical units 410 may be controlled to adjust the light emitted from the curved surface portion 120 according to the curvature of the curved surface portion 120 of the curved surface screen 100 to be detected,
wherein, the optical unit 410 may include a reflecting mirror 411 or an optical lens 452, and the deflection of the optical unit 410 (the reflecting mirror 411 or the optical lens 452) may be adjusted according to the size of the curved surface portion 120 of the curved surface screen 100 and the positional relationship of the curved light pattern, so as to adjust the light of the curved surface portion 120 to the image capturing assembly 300. The positional relationship of the curved light map includes the positional relationship among the curved screen 100, the optical assembly 400, and the image capturing assembly 300. The position relation of the curved light graph can be obtained through coordinate conversion calibration and other modes.
When the optical assembly 400 includes a plurality of mirrors 411, the driving device 420 includes a plurality of mems, each mems is correspondingly connected to a mirror 411, and the mems is used to drive the mirrors 411 to deflect. The control module 600 provides driving signals to the mems, which drives the mirror 411 to deflect, according to the dimensions of the curved surface portion 120 of the curved surface screen 100 and the positional relationship among the curved surface screen 100, the optical assembly 400 and the image capturing assembly 300.
When the optical assembly 400 includes a plurality of optical lenses 452, the driving device includes a plurality of mems, each mems is correspondingly connected to one of the optical lenses 452, and the mems is used to drive the optical lenses 452 to deflect. The control module 600 provides driving signals to the mems driving the optical lens 452 to deflect according to the dimensions of the curved surface portion 120 of the curved surface screen 100 and the positional relationship among the curved surface screen 100, the optical assembly 400 and the image capturing assembly 300.
In step S103, the image acquisition component 300 may be utilized to acquire a test image, where the test image is a display image of the curved screen 100 to be detected.
The image capturing assembly 300 may include a camera (such as a CCD camera), a bracket, a storage unit, a communication unit, and the like, where the camera is mounted on the bracket, the storage unit and the camera are connected to receive and store an image captured by the camera, and the communication unit is used to implement communication between the image capturing assembly 300 and the control module 600. The communication unit may be a wired communication unit such as an I/O interface or the like. The communication unit may also be a wireless communication unit, such as a bluetooth communication unit, an infrared communication unit, a WiFi communication unit, and the like.
The display image of the curved surface screen 100 to be tested can be collected through a camera, the display image of the curved surface screen 100 to be tested is sent to the control module 600 through a communication unit, or the display image of the curved surface screen 100 to be tested is temporarily stored in a storage unit and then sent to the control module 600 through the communication unit.
In step S105, it may be determined whether the curved screen 100 to be detected is acceptable or not, based on the test image.
The control module 600 is connected to the image capturing assembly 300 to receive the display image of the curved screen 100 captured by the image capturing assembly 300, and detect the display image of the curved screen 100. Further, whether the curved screen 100 is qualified or not can be judged by one or more of a spotted judgment method, a point-by-point scanning contrast analysis and a boundary judgment method.
By way of example, the detection method provided by the embodiment of the present disclosure may be implemented by the following steps:
placing the curved surface screen to be detected on a containing part on a detection table;
the position of the optical component and the deflection angle of the optical unit in the optical component are regulated, so that the image acquisition component can acquire a complete curved screen display image;
judging whether the curved screen is qualified or not according to the displayed image of the curved screen;
and outputting a detection result of the current curved screen to be detected.
According to the detection method provided by the embodiment of the disclosure, the propagation direction of the light emitted by the curved surface portion 120 of the curved surface screen 100 to be detected is adjusted through the plurality of optical units 410, so that the image acquisition assembly 300 opposite to the accommodating portion 210 of the detection platform 200 can simultaneously acquire the display image of the curved surface portion 120 and the plane portion 110 of the display screen to be detected, and the display of the curved surface screen 100 to be detected can be detected through the image, so that the problems of different detection standards and easy erroneous judgment and omission judgment caused by manual detection of the curved surface portion 120 in the related art are solved, and the detection accuracy and detection efficiency of the curved surface screen 100 can be improved.
It should be noted that although the steps of the methods of the present disclosure are illustrated in the accompanying drawings in a particular order, this does not require or imply that the steps must be performed in that particular order or that all of the illustrated steps be performed in order to achieve desirable results. Additionally or alternatively, certain steps may be omitted, multiple steps combined into one step to perform, and/or one step decomposed into multiple steps to perform, etc.
Those skilled in the art will appreciate that the various aspects of the invention may be implemented as a system, method, or program product. Accordingly, aspects of the invention may be embodied in the following forms, namely: an entirely hardware embodiment, an entirely software embodiment (including firmware, micro-code, etc.) or an embodiment combining hardware and software aspects may be referred to herein as a "circuit," module "or" unit.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any adaptations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
Claims (9)
1. A detection apparatus for detecting a curved screen, the curved screen comprising a planar portion and a curved portion located at an edge of the planar portion, the detection apparatus comprising:
the detection device comprises a detection table, wherein the detection table is provided with a containing part, and the containing part is used for containing a curved surface screen to be detected;
the image acquisition assembly is opposite to the accommodating part and is used for acquiring a display image of the curved screen to be detected;
an optical assembly including a plurality of optical units configured to be able to adjust a propagation direction of light emitted from a curved surface portion of the curved surface screen to be detected, so that the image acquisition assembly can acquire an image of the curved surface portion;
wherein the optical assembly further comprises:
a driving device connected to the optical unit, the driving device being configured to drive the optical unit to deflect;
wherein the optical unit includes:
a reflecting mirror, wherein a plurality of reflecting mirrors are arranged in an array manner;
the driving device includes:
each micro-electromechanical system is correspondingly connected with one reflecting mirror, and the micro-electromechanical system is used for driving the reflecting mirror to deflect;
the reflecting layer comprises a plurality of independent reflecting mirrors, each reflecting mirror drives deflection through a micro-electromechanical system, the reflecting mirror is a pixel-level reflecting mirror, and the light rays of the curved surface part of the curved surface screen are deflected and reflected through controlling the pixel-level reflecting mirror, so that the light rays of the curved surface part are transmitted to the image acquisition assembly; each of the pixel-level reflectors independently reflects light rays of the curved portions of different curvatures to the image acquisition assembly.
2. A detection apparatus for detecting a curved screen, the curved screen comprising a planar portion and a curved portion located at an edge of the planar portion, the detection apparatus comprising:
the detection device comprises a detection table, wherein the detection table is provided with a containing part, and the containing part is used for containing a curved surface screen to be detected;
the image acquisition assembly is opposite to the accommodating part and is used for acquiring a display image of the curved screen to be detected;
an optical assembly including a plurality of optical units configured to be able to adjust a propagation direction of light emitted from a curved surface portion of the curved surface screen to be detected, so that the image acquisition assembly can acquire an image of the curved surface portion;
wherein the optical assembly further comprises:
a driving device connected to the optical unit, the driving device being configured to drive the optical unit to deflect;
wherein the optical unit includes:
an optical lens, a plurality of the optical lenses being distributed in an array;
the driving device includes:
each micro-electromechanical system is correspondingly connected with one optical lens, and the micro-electromechanical system is used for driving the optical lens to deflect;
the lens layer comprises a plurality of independent optical lenses, each optical lens is driven to deflect through a micro-electromechanical system, the optical lenses are pixel-level optical lenses, and the light rays of the curved surface part of the curved surface screen are deflected and refracted through controlling the pixel-level optical lenses, so that the light rays of the curved surface part are transmitted to the image acquisition component; each of the pixel-level optical lenses independently refracts light rays of the curved surface portions of different curvatures to the image capturing assembly.
3. The detection apparatus according to claim 2, wherein the optical unit further includes:
and the connecting unit is arranged on one side of the optical lens, the connecting unit is connected with the optical lens, and the micro-electromechanical system is connected with the connecting unit.
4. The detecting device of claim 3, wherein the projection of the MEMS onto the optical unit is located in a region of the connection unit.
5. The detection apparatus according to any one of claims 1 or 2, wherein the driving device further comprises:
and the driving circuit is connected with the micro-electromechanical system and is used for providing a power supply signal for the micro-electromechanical system.
6. The detection device according to claim 1 or 2, wherein the optical assembly is provided on both sides of the receiving portion.
7. The test device of claim 1 or 2, wherein the optical assembly is slidably coupled to the test station.
8. The detection apparatus according to claim 1 or 2, characterized in that the detection apparatus further comprises:
the transparent cover plate is arranged on one side, close to the image acquisition assembly, of the detection table, and the optical assembly is connected with the transparent cover plate.
9. A method for detecting a curved screen, the method comprising:
controlling a plurality of optical units to adjust the light emitted by the curved surface part according to the curvature of the curved surface part of the curved surface screen to be detected;
acquiring a test image by using an image acquisition assembly, wherein the test image is a display image of the curved screen to be detected;
determining whether the curved screen to be detected is qualified or not according to the test image;
wherein the optical unit includes:
a reflecting mirror, wherein a plurality of reflecting mirrors are arranged in an array manner;
the driving device includes:
each micro-electromechanical system is correspondingly connected with one reflecting mirror, and the micro-electromechanical system is used for driving the reflecting mirror to deflect;
the reflecting layer comprises a plurality of independent reflecting mirrors, each reflecting mirror drives deflection through a micro-electromechanical system, the reflecting mirror is a pixel-level reflecting mirror, and the light rays of the curved surface part of the curved surface screen are deflected and reflected through controlling the pixel-level reflecting mirror, so that the light rays of the curved surface part are transmitted to the image acquisition assembly; each of the pixel-level reflectors independently reflects light rays of the curved portions of different curvatures to the image acquisition assembly.
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| CN112850145B (en) * | 2020-12-18 | 2022-06-17 | 苏州精濑光电有限公司 | Curved surface screen crack check out test set |
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