CN215179769U - Defect detection equipment of panel - Google Patents
Defect detection equipment of panel Download PDFInfo
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- CN215179769U CN215179769U CN202120728084.6U CN202120728084U CN215179769U CN 215179769 U CN215179769 U CN 215179769U CN 202120728084 U CN202120728084 U CN 202120728084U CN 215179769 U CN215179769 U CN 215179769U
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Abstract
The utility model discloses a defect detecting equipment of panel. In one embodiment, an inspection station of the apparatus comprises: the first camera is arranged at a position corresponding to the outer side of the bending area of the panel to be detected and used for receiving image light at the outer side of the bending area of the panel when light irradiates the outer side of the bending area of the panel so as to generate a detection image at the outer side of the bending area of the panel; the second camera is used for receiving the image light of the inner side of the bending area of the panel after the light path is changed by the first light path switching component so as to generate a detection image of the inner side of the bending area of the panel. The embodiment can accurately and comprehensively realize the defect detection of the panel to be detected.
Description
Technical Field
The utility model relates to a technical field that the panel detected, more specifically relates to a defect detecting equipment of panel.
Background
Panel manufacturers perform defect detection on the bending area of the panel before the panel leaves a factory, for example, the bending area of a 3D or 2.5D curved screen is subjected to defect detection. The existing detection method generally adopts a line scan camera and a light source, and utilizes a camera lens to shoot and pick up an image of cover glass (namely, the outer side of a bending area) of the bending area irradiated by the light source, and then carries out defect detection according to the collected image. This method can detect defects only from the outside of the bending region, and cannot detect a part of the internal defects that do not penetrate the panel, for example, cracks are formed on the substrate side (i.e., inside the bending region). Therefore, the accuracy and comprehensiveness of the detection are insufficient.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a defect detecting equipment of panel to solve at least one in the problem that prior art exists.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an apparatus for detecting defects in a panel, an inspection station of the apparatus comprising:
the first camera is arranged at a position corresponding to the outer side of the bending area of the panel to be detected and used for receiving image light at the outer side of the bending area of the panel when light irradiates the outer side of the bending area of the panel so as to generate a detection image at the outer side of the bending area of the panel;
the second camera is used for receiving the image light of the inner side of the bending area of the panel after the light path is changed by the first light path switching component so as to generate a detection image of the inner side of the bending area of the panel.
Optionally, the inspection station further comprises:
and the rotating mechanism is used for driving the first light path switching component to rotate so as to adjust the first light path switching component to change the angle of input light.
Optionally, the inspection station further comprises:
and the translation mechanism is used for driving the panel to be tested to translate along a first direction.
Optionally, the inspection station further comprises:
and the rotating mechanism is used for driving the first light path switching component to rotate around an axis parallel to the first direction so as to adjust the first light path switching component to change the angle of input light.
Optionally, the panel to be detected includes two bending regions located on opposite sides, and the detection station includes two first cameras respectively corresponding to outer sides of the two bending regions, two first optical path switching components respectively corresponding to inner sides of the two bending regions, and two second cameras.
Optionally, the panel to be detected includes two bending regions located on opposite sides, and the detection station includes a first camera, a second camera, a plurality of first optical path switching components, and a plurality of second optical path switching components;
the first camera is used for receiving the image light outside the two bending areas of the panel after the light path is changed by the plurality of second light path switching components so as to generate detection images outside the two bending areas of the panel;
the second camera is configured to receive, at the light ray, image light inside the two bending regions of the panel after the light path is changed by the plurality of first light path switching members to generate detection images inside the two bending regions of the panel.
Optionally, the inspection station further comprises a synchronized pulse distributor for driving the first camera and the second camera.
Optionally, the inspection station further comprises a light source for emitting the light.
Optionally, the first camera and the second camera are each a line scan camera.
Optionally, the inspection station further comprises: and the data processing device is used for detecting the defects according to the detection image outside the bending area of the panel and the detection image inside the bending area of the panel.
The utility model has the advantages as follows:
the utility model provides a defect detection equipment of panel, through the panel that awaits measuring on same detection station, for example first camera and the first light source of the position setting in the display screen bending zone outside, and the first light path switching part that the inboard position of display screen bending zone that awaits measuring set up, second camera and second light source, can gather the outside and the inboard detection image that obtain the bending zone of the display screen that awaits measuring simultaneously, thereby can realize going on the outside and the inboard defect detection to the bending zone of the display screen that awaits measuring simultaneously on a detection station, the accuracy nature and the comprehensiveness of defect detection have been promoted. Moreover, the detection equipment fully utilizes the internal structure of the detection station, and can save the detection cost.
Drawings
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.
Fig. 1 is a schematic view of a defect detecting apparatus for a panel according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a defect detecting apparatus for a panel according to another embodiment of the present invention.
Fig. 3 is a schematic diagram of a defect detecting apparatus for a panel according to another embodiment of the present invention.
Detailed Description
In order to explain the present invention more clearly, the present invention will be further described with reference to the preferred embodiments and the accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and is not to be taken as limiting the scope of the invention.
An embodiment of the utility model provides a defect detecting equipment of panel, a detection station of this equipment includes:
the first camera is arranged at a position corresponding to the outer side of the bending area of the panel to be detected and used for receiving image light at the outer side of the bending area of the panel when light irradiates the outer side of the bending area of the panel so as to generate a detection image at the outer side of the bending area of the panel;
the second camera is used for receiving the image light of the inner side of the bending area of the panel after the light path is changed by the first light path switching component so as to generate a detection image of the inner side of the bending area of the panel.
In a specific example, for example, the panel to be tested is a display screen, and the display screen to be tested is an OLED module, and for example, the display screen to be tested includes a flexible substrate, a functional layer, and a flexible cover plate, which are sequentially disposed, where the functional layer includes, for example, a buffer layer, a TFT circuit layer, an OLED light emitting layer, an encapsulation layer, and other film layers.
In some optional implementation manners of this embodiment, the display screen to be detected includes two bending areas located on opposite sides, and the detection station includes two first cameras respectively corresponding to outer sides of the two bending areas, two first light path switching components respectively corresponding to inner sides of the two bending areas, and two second cameras.
In some optional implementations of this embodiment, the inspection station further includes a light source for providing light.
In a specific example, when the natural environment light cannot meet the irradiation standard, a first light source and a second light source are respectively arranged at positions corresponding to the first camera and the second camera, wherein light emitted from the first light source is used for irradiating the outer side of the bending area of the display screen to be measured, and light emitted from the second light source is used for irradiating the inner side of the bending area of the display screen to be measured after the light path of the light path switching part is changed.
In one specific example, as shown in fig. 1, the display screen to be tested is a 2.5D curved screen with bending regions on opposite sides (e.g., two long sides). The two first cameras are respectively a camera A and a camera B, are arranged at the outer sides of the two bending areas at the opposite sides of the display screen to be tested (namely the positions above the two bending areas), used for shooting images of the outer sides of two bending areas at the opposite sides of the display screen to be tested, the two first light sources are a light source A and a light source B which respectively correspond to the camera A and the camera B, when the light emitted from the light source a and the light source B respectively irradiate the outer sides of the two bending regions at the opposite sides of the display screen to be tested (i.e. the outer sides of the left and right bending regions in fig. 1), when the light source A and the light source B irradiate the flexible cover plate of the display screen to be detected, the camera A and the camera B respectively collect image light outside two bending areas at the opposite sides of the display screen to be detected (the light emitted by the light source A and the light emitted by the light source B respectively enters the lens of the camera A and the lens of the camera B after being reflected by the two bending areas) so as to generate detection images outside the two bending areas at the opposite sides of the display screen to be detected.
In a specific example, as shown in fig. 1, the two second cameras are a camera C and a camera D, respectively, and are disposed at positions inside two bending regions on opposite sides of the display screen to be tested (i.e. positions below the two bending regions), and are configured to capture images of the images inside the two bending regions on the opposite sides of the display screen to be tested, the two first light path switching components and the two second light sources correspond to the camera C and the camera D, respectively, and the two second light sources are a light source C and a light source D corresponding to the camera C and the camera D, respectively, and when light emitted from the light source C and the light source D changes light paths through the corresponding first light path switching components, respectively, and irradiates the inside of the two bending regions on opposite sides of the display screen to be tested (i.e. the inside of the left and right bending regions in fig. 1), that is, when the light irradiates the flexible substrate of the display screen to be tested, the camera C and the camera D respectively collect image light inside the two bending regions on opposite sides of the display screen to be tested (i.e. the light sources C and D) after the light paths are changed by the corresponding first light path switching components The emergent light of D irradiates the inner sides of the two bending areas after the light path is changed by the corresponding first light path switching part, and the image light reflected by the inner sides of the two bending areas respectively enters the lenses of the camera C and the camera D after the light path is changed by the corresponding first light path switching part) so as to generate the detection images of the inner sides of the two bending areas at the opposite sides of the display screen to be detected.
It should be noted that, in this embodiment, the number of the first camera, the first light source, the first light path switching component, the second camera, the second light source, and the like arranged on the detection station is not limited, and the specific number may be set according to the actual situation, for example, the number and the position of the bending region of the display screen to be detected, the type of the camera and the type of the light source, and the like.
In a specific example, the first light path switching member is, for example, a prism such as a mirror, a refractor, or the like. In a specific example, the reflector is made of a tin-plated material with 100% reflection, so that the effect of changing the light path of the reflector is better. It should be noted that the type of the first optical path switching member is not limited to a prism, as long as "when the inside of the bending region of the display screen is irradiated after the optical path is changed, the image light inside the bending region of the display screen after the optical path is changed by the first optical path switching member is received to generate the detection image inside the bending region of the display screen". In some optional implementations of this embodiment, the inspection station further includes:
and the rotating mechanism is used for driving the first light path switching component to rotate so as to adjust the first light path switching component to change the angle of input light. Like this, accessible rotary mechanism drives first light path switching part and rotates, adapts to the display screen that awaits measuring of the different curvatures in bending area for the detection equipment detectable different models's that this embodiment provided display screen. In some optional implementations of this embodiment, the inspection station further includes:
and the translation mechanism is used for driving the display screen to be tested to translate along a first direction.
In a specific example, as shown in fig. 1, the translation mechanism is, for example, a transfer platform provided with a conveyor belt, the display screen to be detected is a 2.5D curved screen with two long sides being bending regions, and the translation mechanism drives the display screen to be detected to move along a direction parallel to the long sides, so that the display screen to be detected can be driven by the translation mechanism to move and continuously collect four cameras under the condition that the collection visual field of the cameras is limited, and the inside and outside detection images of the whole bending region of the display screen to be detected can be obtained.
In some optional implementations of this embodiment, the inspection station further includes:
and the rotating mechanism is used for driving the first light path switching component to rotate around an axis parallel to the first direction so as to adjust the first light path switching component to change the angle of input light.
It should be noted that, the display screen to be detected may also be fixed, and the displacement mechanism drives the camera a, the camera B, the corresponding light source a and the light source B, the two first light path switching components, the camera C and the camera D, and the corresponding light source C and the light source D to move, so as to obtain the detection images of the inner side and the outer side of the whole bending region of the display screen to be detected.
In some optional implementation manners of this embodiment, the display screen to be detected includes two bending regions located on opposite sides, and the detection station includes a first camera, a second camera, a plurality of first light path switching components, and a plurality of second light path switching components;
the first camera is used for receiving the image light outside the two bending areas of the display screen after the light path of the light is changed by the plurality of second light path switching components so as to generate detection images outside the two bending areas of the display screen; the image light outside the two bending regions after being changed by the second light path switching member is parallel light.
The second camera is configured to receive, at the light beam, image light inside the two bending regions of the display screen after the light path is changed by the plurality of first light path switching members, so as to generate detection images inside the two bending regions of the display screen. The image light inside the two bending regions changed by the first light path switching member is parallel light.
In one specific example, as shown in fig. 2, the display screen to be tested is a 2.5D curved screen with bending regions on opposite sides (e.g., two long sides). A first camera is camera E, set up the position in the display screen top that awaits measuring for shoot the image in two bending regions outsides of the display screen opposite side that awaits measuring, a second camera is camera F, the position of setting in the display screen below that awaits measuring, an image that is used for shooting two bending regions inboards of the display screen opposite side that awaits measuring, first light path switching part sets up in the position in two bending regions inboards of the display screen that awaits measuring, second light path switching part sets up in the position in two bending regions outsides of the display screen that awaits measuring, camera E is used for shining at light or light source (not shown in figure 2) during two bending regions outsides of display screen, receive the image light in two bending regions outsides of display screen, in order to generate the detection image in two bending regions outsides of display screen. The camera F is used for receiving the image light of the inner sides of the two bending areas of the display screen when the light rays or the light source irradiate the inner sides of the two bending areas of the display screen so as to generate the detection images of the inner sides of the two bending areas of the display screen.
In the above implementation manner, as shown in fig. 2, the plurality of first optical path switching components are a plurality of prisms such as mirrors, and the plurality of second optical path switching components are a plurality of prisms such as mirrors, it can be understood that the present embodiment does not limit the number, positions, etc. of the light sources and the prisms, for example, in fig. 3, the positions of the prisms are changed, and the specific number and positions can be set according to actual conditions, as long as the first optical path switching components can achieve "when irradiating the inner sides of the two bending regions of the display screen after changing the optical path, receive the image light inside the two bending regions of the display screen after changing the optical path through the first optical path switching components to generate the detection images inside the two bending regions of the display screen", and the second optical path switching components can achieve "when irradiating the outer sides of the two bending regions of the display screen after changing the optical path, receive the image light outside the two bending regions of the display screen after changing the optical path through the second optical path switching components, and generating detection images outside the two bending areas of the display screen.
In some optional implementations of this embodiment, the inspection station further includes a synchronized pulse distributor for driving the first camera and the second camera.
Continuing with the foregoing example, the synchronous pulse distributor employs a one-to-four pulse distributor, which can simultaneously trigger the camera a, the camera B, the camera C, and the camera D to shoot the display screen to be detected moving on the translation mechanism, or a one-to-two pulse distributor, which can simultaneously trigger the camera E and the camera F to shoot the display screen to be detected moving on the translation mechanism, so as to acquire the detection images of the inner side and the outer side of the integral bending area of the display screen to be detected.
In some optional implementations of this embodiment, the light source is a point light source. In a specific example, the environment during detection is similar to a dark field mode, and the residual light of the point light source can cover the bending area to be detected.
This implementation mode can make the light source emit light stably.
In some optional implementations of this embodiment, the first camera and the second camera are each a line scan camera.
According to the implementation mode, the speed of scanning the bending area of the display screen to be detected can be increased, and the definition of the acquired detection images inside and outside the bending area of the display screen to be detected can be ensured.
It should be noted that, in this embodiment, the first camera and the second camera are not limited to be line scan cameras, but may also be area-array cameras, for example.
In some optional implementations of this embodiment, the inspection station further includes: and the data processing device is used for carrying out defect detection according to the detection image outside the bending area of the display screen and the detection image inside the bending area of the display screen.
The working principle of the defect detection device for the panel provided by the embodiment is as follows:
when the 2.5D curved screen with the bending areas on the two long sides before leaving a factory is subjected to defect detection, the 2.5D curved screen is placed on a transfer platform, after the reflection angle of a reflector is adjusted through a rotating mechanism, a translation mechanism is controlled to drive the 2.5D curved screen to move in the direction parallel to the long sides, meanwhile, a light source is started, a synchronous pulse distributor is used for controlling a camera to collect detection images of the 2.5D curved screen, which are positioned in the bending areas on the two long sides, on the inner side and on the outer side of the bending areas, the detection images of the inner side and the outer side of the whole bending areas are acquired and then sent to a data processing device, and the data processing device is used for carrying out defect detection according to the detection images.
In summary, the defect detecting apparatus for panel provided in this embodiment, through the panel to be detected on the same detection station, for example, the first camera and the first light source that are disposed at the position outside the bending area of the display screen, and the light path switching component, the second camera and the second light source that are disposed at the position inside the bending area of the display screen to be detected, the detection images of the outside and the inside of the bending area of the display screen to be detected can be acquired simultaneously, so that the defect detection of the outside, that is, the inside, of the bending area of the display screen to be detected can be performed simultaneously on one detection station, and the accuracy and the comprehensiveness of the defect detection are improved. Moreover, the detection equipment fully utilizes the internal structure of the detection station, and can save the detection cost.
In the description of the present invention, it should be noted that the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are intended to be inclusive and mean, for example, that they may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
It is further noted that, in the description of the present invention, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it is obvious for those skilled in the art to make other variations or changes based on the above descriptions, and all the embodiments cannot be exhausted here, and all the obvious variations or changes that belong to the technical solutions of the present invention are still in the protection scope of the present invention.
Claims (10)
1. An apparatus for detecting defects in a panel, comprising:
the first camera is arranged at a position corresponding to the outer side of the bending area of the panel to be detected and used for receiving image light at the outer side of the bending area of the panel when light irradiates the outer side of the bending area of the panel so as to generate a detection image at the outer side of the bending area of the panel;
the second camera is used for receiving the image light of the inner side of the bending area of the panel after the light path is changed by the first light path switching component so as to generate a detection image of the inner side of the bending area of the panel.
2. The apparatus of claim 1, wherein the inspection station further comprises:
and the rotating mechanism is used for driving the first light path switching component to rotate so as to adjust the first light path switching component to change the angle of input light.
3. The apparatus of claim 1, wherein the inspection station further comprises:
and the translation mechanism is used for driving the panel to be tested to translate along a first direction.
4. The apparatus of claim 3, the inspection station further comprising:
and the rotating mechanism is used for driving the first light path switching component to rotate around an axis parallel to the first direction so as to adjust the first light path switching component to change the angle of input light.
5. The apparatus according to claim 1, wherein the panel under test comprises two bending regions located at opposite sides, and the inspection station comprises two first cameras respectively corresponding to the outer sides of the two bending regions, two first light path switching members respectively corresponding to the inner sides of the two bending regions, and two second cameras.
6. The apparatus of claim 1, wherein the panel under test comprises two bending regions at opposite sides, and the inspection station comprises a first camera, a second camera, a plurality of first optical path switching members, and a plurality of second optical path switching members;
the first camera is used for receiving the image light outside the two bending areas of the panel after the optical paths of the image light are changed by the plurality of second optical path switching components so as to generate detection images outside the two bending areas of the panel;
the second camera is configured to receive image light inside the two bending regions of the panel after the optical path is changed by the plurality of first optical path switching members to generate detection images inside the two bending regions of the panel.
7. The apparatus of claim 1, wherein the inspection station further comprises a synchronized pulse distributor for driving the first camera and the second camera.
8. The apparatus of claim 1, wherein the inspection station further comprises a light source for emitting the light.
9. The apparatus of claim 1, wherein the first camera and the second camera are each line scan cameras.
10. The apparatus of claim 1, wherein the inspection station further comprises: and the data processing device is used for detecting the defects according to the detection image outside the bending area of the panel and the detection image inside the bending area of the panel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120728084.6U CN215179769U (en) | 2021-04-09 | 2021-04-09 | Defect detection equipment of panel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120728084.6U CN215179769U (en) | 2021-04-09 | 2021-04-09 | Defect detection equipment of panel |
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| CN215179769U true CN215179769U (en) | 2021-12-14 |
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| CN202120728084.6U Active CN215179769U (en) | 2021-04-09 | 2021-04-09 | Defect detection equipment of panel |
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| CN (1) | CN215179769U (en) |
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- 2021-04-09 CN CN202120728084.6U patent/CN215179769U/en active Active
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