CN112285957B - Display panel detection device - Google Patents
Display panel detection device Download PDFInfo
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- CN112285957B CN112285957B CN202011198061.5A CN202011198061A CN112285957B CN 112285957 B CN112285957 B CN 112285957B CN 202011198061 A CN202011198061 A CN 202011198061A CN 112285957 B CN112285957 B CN 112285957B
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1306—Details
- G02F1/1309—Repairing; Testing
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/006—Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays
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Abstract
The invention relates to the technical field of liquid crystal display and discloses a display panel detection device. The display panel detection device comprises a first frame body, a backlight assembly and at least two vision cameras, wherein the backlight assembly is arranged in the first frame body, and the upper surface of the backlight assembly can emit light and is used for supporting the display panel; at least two groups of vision cameras are arranged in the first frame and located in the same horizontal plane above the backlight assembly, at least two groups of vision cameras can move in the vertical Z direction and move in the horizontal plane respectively together, and at least two groups of vision cameras can shoot images of different parts of the display panel respectively. The display panel detection device can be suitable for detecting display panels with various dimensions and specifications, and has high detection efficiency.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a display panel detection device.
Background
With the continuous development of science and technology, the volume demand of displays is becoming lighter and thinner, and LCDs (Liquid Crystal Display panels) have become the mainstream products in the market due to their advantages of low operating voltage, no radiation, light weight, small volume, and the like.
Before the LCD leaves the factory, the LCD needs to be placed in a detection device for AOI (Automated Optical Inspection)/Demura detection, where AOI can detect appearance defects in the LCD and Demura can detect light and dark uniformity of the LCD. In the prior art, a display panel detection device for detecting an LCD generally includes a backlight source and an optical module, where the optical module includes an optical module and a camera, and the optical module can collect image information of the LCD located on the upper side of the backlight source, and then obtain a reliable detection result. With the continuous development of LCD products, the size of the LCD products becomes larger and larger, and the detection device in the prior art is difficult to be compatible with the detection of the large-sized LCD or has low detection efficiency.
Therefore, the invention is needed to provide a display panel detection device for solving the problem of inconvenient detection of large-size LCDs in the prior art.
Disclosure of Invention
The invention aims to provide a display panel detection device which can detect display panels with various specifications and sizes and has high detection efficiency.
In order to achieve the purpose, the invention adopts the following technical scheme:
a display panel inspection apparatus comprising:
a first frame body;
a backlight assembly disposed in the first frame, an upper surface of the backlight assembly being capable of emitting light and supporting a display panel;
at least two groups of vision cameras are arranged in the first frame body and located in the same horizontal plane above the backlight assembly, and at least two groups of vision cameras can move in the vertical Z direction together and move in the horizontal plane respectively so as to shoot images of different parts of the display panel respectively.
Optionally, the display panel detection apparatus includes three sets of visual cameras, including:
a first set of vision cameras, a projection on the backlight assembly being located on a midline of the backlight assembly extending in a horizontal Y-direction, the first set of vision cameras being movable in the horizontal Y-direction;
in addition, the second group of visual cameras and the third group of visual cameras are respectively positioned on two sides of the first group of visual cameras along the horizontal Y direction and can respectively move along the horizontal X direction and the horizontal Y direction, and the horizontal X direction is perpendicular to the horizontal Y direction.
Optionally, the display panel detection apparatus further includes a clamping and fixing mechanism, and the clamping and fixing mechanism includes:
the flanges extend along the horizontal X direction and protrude out of the upper surface of the backlight assembly;
the two groups of X-direction clamping assemblies are oppositely arranged and can output movement close to each other along the horizontal X direction so as to clamp the display panel along the X direction and enable the central line of the display panel extending along the horizontal Y direction to be coincided with the central line of the backlight assembly extending along the horizontal Y direction;
and the Y-direction clamping assembly can output movement along the horizontal Y direction to clamp the display panel to the rib.
Optionally, the display panel detection apparatus further includes:
the first shading component is arranged at one end of the backlight component, which is away from the blocking edge along the horizontal Y direction, and can shade the part of the backlight component, which is not covered by the display panel, along the horizontal Y direction;
and the second shading component and the third shading component are respectively arranged at two ends of the backlight component along the horizontal X direction and can respectively shade the parts of the two ends of the backlight component along the horizontal X direction, which are not covered by the display panel.
Optionally, the first shade assembly comprises:
the first rotating shaft is rotatably arranged on one side of the backlight assembly, which is far away from the retaining edge, and extends along the horizontal X direction;
one end of the first shading curtain is wound on the first rotating shaft, and the other end of the first shading curtain can slide along the horizontal Y direction relative to the first frame body and is locked at any position;
the third shading assembly and the second shading assembly are symmetrically arranged, and the second shading assembly comprises:
the second rotating shafts are rotatably arranged at two ends of the backlight assembly along the horizontal X direction and extend along the horizontal Y direction;
and one end of the second window shade is wound on the second rotating shaft, and the other end of the second window shade can slide along the horizontal X direction relative to the first frame body and is locked at any position.
Optionally, each set of the X-direction clamping assemblies is disposed at the other end edge of the second window shade on the corresponding side, and the Y-direction clamping assemblies is disposed at the other end edge of the first window shade.
Optionally, the display panel detecting apparatus further includes a vertical lifting mechanism, the vertical lifting mechanism is configured to drive at least two sets of the vision cameras to move together along a vertical Z direction, and the vertical lifting mechanism includes:
the two ends of the cross beam are respectively movably connected with the first frame body, and at least two groups of vision cameras are movably connected to the cross beam;
and the output end of the Z-direction driving component is respectively connected with the two ends of the cross beam and can drive the two ends of the cross beam to synchronously move along the vertical Z direction.
Optionally, the display panel detection apparatus further includes an edge light mechanism, and the edge light mechanism is disposed at a side of the backlight assembly and is configured to supplement light for the display panel on the backlight assembly.
Optionally, the display panel detection device includes a plurality of sets of the side light mechanisms, each side light mechanism includes a position adjustment assembly and a side light source connected to an output end of the position adjustment assembly, and the position adjustment assembly can drive the side light source to move along a vertical Z direction and move in a horizontal plane.
Optionally, the display panel detection apparatus further includes a curtain mechanism, the curtain mechanism includes:
the second frame body can be arranged outside the first frame body and is detachably connected with the first frame body;
and the curtain is covered on the second frame body and used for shading the working space of at least two groups of vision cameras.
The invention has the beneficial effects that:
when the display panel detection device is used, after the display panel is placed on the backlight assembly, the backlight assembly provides a backlight source for the display panel to be detected, at least two vision cameras move together along the vertical Z direction, so that focusing can be realized, then the position of each vision camera in the horizontal plane is respectively adjusted, so that the vision cameras respectively shoot different parts of the display panel, and complete image information of the whole display panel is obtained after shooting results of the vision cameras are spliced, so that the display panel detection device can be suitable for detecting large-size display panels, and is convenient to detect and high in efficiency; for a small-sized display panel, only one of the at least two vision cameras can be selected for shooting detection, and the universality is good.
Drawings
FIG. 1 is a schematic structural diagram of a display panel inspection apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a lifting mechanism provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram of a first set of vision cameras and a first camera body adjustment assembly according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a second set of vision cameras and a second camera body adjustment assembly provided in accordance with an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a backlight assembly, a first light shielding assembly, a second light shielding assembly and a third light shielding assembly according to an embodiment of the present invention;
FIG. 6 is an enlarged view at A in FIG. 5;
FIG. 7 is a schematic structural diagram of a first side-light mechanism according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a second side-light mechanism according to an embodiment of the present invention.
In the figure:
1-a first frame body;
2-a backlight assembly;
31-a first set of vision cameras; 32-a second set of vision cameras; 33-a third group of vision cameras;
4-clamping and fixing mechanism; 41-a flange; a 42-X directional clamping assembly;
51-a first shade assembly; 511-a first window blind; 512-a first rotating shaft; 513 — a first guide rail; 514-first slider assembly; 5141-a first slider body; 5142-first turn screw; 52-a second shade assembly; 521-a second window shade; 522-a second shaft; 523-a second guide; 524-a second slider assembly; 5241-a second slider body; 5242-second turn screw; 53-a third shade assembly;
6-a lifting mechanism; 61-a cross beam; a 62-Z direction drive assembly; 621-a rotation driving source; 622 — first right angle drive; 623-a first transmission shaft; 624-a second right angle drive; 625-a feed screw nut pair; 626-a second drive shaft; 627-a third right angle drive;
7-a side light mechanism; 71-a position adjustment assembly; 711-horizontal moving assembly; 712-a vertical movement assembly; 72-side light source;
8-curtain mechanism; 81-a second frame body; 82-curtain;
91-a first camera adjustment assembly; 911-a first Y-direction linear module; 92-a second camera adjustment component; 921-X direction straight line module; 922-a second Y-direction linear module; 923-manually fine tuning the platform.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "connected," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integral to one another; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The embodiment provides a display panel detection device, which can be used in the technical field of liquid crystal display, and is particularly suitable for AOI and/or Demura detection of an LCD. As shown in fig. 1-7, the X direction represents the horizontal X direction, the Y direction represents the horizontal Y direction, the Z direction represents the vertical Z direction, the X direction and the Y direction are located in the horizontal plane, and the X direction, the Y direction and the Z direction are perpendicular to each other.
Specifically, display panel detection device includes first support body 1, backlight unit 2 and two at least vision cameras, backlight unit 2 sets up in first support body 1, backlight unit 2's upper surface can send light and be used for supporting display panel, two at least groups of vision cameras set up in first support body 1 and be located the same horizontal plane of backlight unit 2 top, two at least groups of vision cameras can be followed vertical Z to the motion together and move in the horizontal plane respectively to shoot the image of display panel different parts respectively.
When the display panel detection device is used, after the display panel is placed on the backlight component 2, the backlight component 2 provides a backlight source for the display panel to be detected, at least two vision cameras move together along the vertical Z direction, so that focusing can be realized, then the position of each vision camera in the horizontal plane is respectively adjusted, so that the vision cameras respectively shoot different parts of the display panel, and complete image information of the whole display panel is obtained after shooting results of the vision cameras are spliced, so that the display panel detection device can be suitable for detecting large-size display panels, and is convenient to detect and high in efficiency; it is understood that, for a small-sized display panel, only one of the visual cameras may be selected for shooting, and the selection may be made according to the actual size of the display panel.
In this embodiment, the backlight assembly 2 may be an LED lamp box, and the upper surface of the backlight assembly 2 is flat, so that the display panel to be detected may be stably supported. In other embodiments, the specific structure of the backlight assembly 2 is not limited. The visual camera may be any one of those in the prior art, and may be selected and set according to the type of the display panel to be actually tested and the item to be tested, which is not described herein again.
Preferably, still be provided with the detection grating on the first support body 1, when the vision camera in the course of the work, the detection grating detects people or thing discrepancy first support body 1, then the vision camera stops detection work, avoids the detection structure of vision camera to receive the influence that personnel came in and go out. In this embodiment, detect the entrance of grating setting at first support body 1, in other embodiments, the opening part that first support body 1 can carry out personnel's discrepancy all can set up the detection grating, does not do the restriction here.
Preferably, as shown in fig. 1, the display panel detection apparatus further includes a curtain mechanism 8, the curtain mechanism 8 includes a second frame body 81 and a curtain 82, the second frame body 81 is disposed outside the first frame body 1 and detachably connected to the first frame body 1, and the curtain 82 covers the second frame body 81 for shielding the working space of at least two sets of vision cameras. The second frame body 81 can support the curtain 82, so that the brightness of the working space of the vision camera meets the detection requirement, and the second frame body 81 and the first frame body 1 are respectively independently arranged and detachably connected, on one hand, when the display panel detection device is in transportation, the first frame body 1 and the second frame body 81 are connected, so that the display panel detection device can be moved and transported together, and the operation is convenient; on the other hand, when the display panel detection device is assembled and debugged, the second frame 81 can be detached from the first frame 1 first, so that an operator can conveniently install and debug other parts; in addition, in display panel detection device's use, first support body 1 and second support body 81 separately set up, so when outside personnel or other structures produced to collide with or rock second support body 81, can not make the vision camera on the first support body 1 take place to rock to guarantee test result's accuracy.
Particularly, in this embodiment, the first frame body 1 and the second frame body 81 are formed by splicing aluminum profiles, and have firm structure and light weight. Further, in the use process of the display panel testing device, the curtain 82 is arranged on all the other five surfaces of the second frame body 81 except the bottom surface, the bottom surface of the second frame body 81 can be provided with plate structures, and the plate structures can play a role in shading light and can support parts in the first frame body 1.
Preferably, as shown in fig. 1 and 2, the display panel detection apparatus further includes a vertical lifting mechanism 6, the vertical lifting mechanism 6 is configured to drive at least two sets of vision cameras to move up and down along a vertical Z direction, the vertical lifting mechanism 6 includes a cross beam 61 and a Z direction driving assembly 62, wherein the cross beam 61 extends along a horizontal X direction, two ends of the cross beam 61 are respectively movably connected to the first frame body 1, the at least two sets of vision cameras are movably connected to the cross beam 61, an output end of the Z direction driving assembly 62 is respectively connected to two ends of the cross beam 61, and the two ends of the cross beam 61 can be driven to move along the vertical Z direction simultaneously. Z carries out elevating movement to the both ends of drive assembly 62's output synchronous drive crossbeam 61, makes crossbeam 61 in the motion process can not take place the skew along its extending direction to guarantee the plane degree of at least two sets of vision cameras, thereby make two at least vision cameras can focus simultaneously, reduce the debugging process.
Preferably, as shown in fig. 2, the Z-drive assembly 62 includes: the rotary driving source 621, the first right-angle driving element 622, two first transmission shafts 623, two sets of second right-angle driving elements 624 and two sets of screw-nut pairs 625, wherein the screws in the two sets of screw-nut pairs 625 extend along the vertical Z direction and are rotatably arranged on the first frame body 1, the cross beam 61 extends along the horizontal X direction and two ends of the cross beam are respectively fixedly connected with the nuts of the two screw-nut pairs 625, the rotary driving source 621 is arranged between the two screws, the input end of the first right-angle driving element 622 is connected with the output end of the rotary driving source 621 and converts the single input of the rotary driving source 621 into the double output movement, the input ends of the two first transmission shafts 623 extending along the horizontal X direction are respectively connected with two output ends of the first right-angle driving element 622, the two first transmission shafts 623 lead the rotary movement output by the rotary driving source 621 out to the two screws in space, the output end of each first transmission shaft 623 is connected with one screw 624 through one second right-angle driving element, finally, the rotary rotation motion of the rotary driving source 621 is transmitted to the two screw rods, and the two screw rods rotate simultaneously, so that the two nuts respectively drive the two ends of the beam 61 to synchronously move along the vertical Z direction, and the at least two vision cameras are driven to synchronously move along the vertical Z direction.
Further, the backlight assembly 2 is disposed between the two screw nut pairs 625 of the Z-direction driving assembly 62, so that the rotary driving source 621 has no space, and for this purpose, as shown in fig. 2, the Z-direction driving assembly 62 further includes two sets of a third right-angle transmission member 627 and two second transmission shafts 626, wherein an input end of the third right-angle transmission member 627 is connected to an output end of the first transmission shaft 623, the second transmission shaft 626 extends along the horizontal Y direction, an input end of the second transmission shaft 626 is connected to an output end of the third right-angle transmission member 627, and an output end of the second transmission shaft 626 is connected to an input end of the second right-angle transmission member 624. By additionally arranging the second transmission shaft 626 and the third right-angle transmission member 627, the rotary driving source 621 and the two first transmission shafts 623 are staggered with the two lead screw nut pairs 625 in the horizontal Y direction so as to avoid the backlight assembly 2 and reasonably arrange the spatial arrangement among the components. Specifically, in this embodiment, the first right-angle transmission member 622 is a single-input double-output right-angle reducer, and the second right-angle transmission member 624 and the second right-angle transmission member 627 are both single-input single-output right-angle reducers. In other embodiments, the Z-direction driving assembly 62 may also be another structure capable of synchronously driving the two ends of the cross beam 61 to synchronously perform the lifting motion along the vertical Z-direction by using one driving source, which is not specifically limited herein.
Preferably, as shown in fig. 1, the display panel inspection apparatus in this embodiment includes three sets of visual cameras, including a first set of visual cameras 31, a second set of visual cameras 32, and a third set of visual cameras 33, a projection of the first set of visual cameras 31 on the backlight assembly 2 is located on a center line of the backlight assembly 2 extending along the horizontal Y direction, the first set of visual cameras 31 can move along the horizontal Y direction, and the second set of visual cameras 32 and the third set of visual cameras 33 are respectively located on two sides of the first set of visual cameras 31 along the horizontal Y direction and can move along the horizontal X direction and the horizontal Y direction, respectively. After the display panel is fixed on the upper surface of the backlight assembly 2 and the center line of the display panel extending along the horizontal Y direction is overlapped with the center line of the backlight assembly 2 extending along the horizontal Y direction, the first group of vision cameras 31 can detect the middle part of the display panel, the second group of vision cameras 32 and the third group of vision cameras 33 can detect the two side positions of the center line of the display panel extending along the horizontal Y direction respectively, when the shooting results of the three vision cameras are spliced, the shooting results of the first group of vision cameras 31 can be used as a reference, and the operation is convenient. It should be noted that, the three groups of visual cameras can be arranged to detect a display panel with a size of less than 85 inches, and meet the current requirements in the industry.
Preferably, as shown in fig. 1 and 3, the display panel inspection apparatus further includes a first camera adjusting assembly 91, and the first camera adjusting assembly 91 is used for adjusting the position of the first group of vision cameras 31 along the horizontal Y direction. The first camera adjusting assembly 91 comprises a first Y-direction straight line module 911, the first Y-direction straight line module 911 is fixed on the beam 61 and can output straight line motion along the horizontal Y direction, and the output end of the first Y-direction straight line module 911 is connected with the first group of vision cameras 31, so that the positions of the first group of vision cameras 31 along the horizontal Y direction can be adjusted to meet the detection of display panels with different sizes along the horizontal Y direction. Further, first camera adjusting part 91 still includes manual fine setting platform (not shown in the figure), and the output at first Y to sharp module 911 is connected to manual fine setting platform, and first set of vision camera 31 is connected at the output of manual fine setting platform, and manual fine setting platform can finely tune first camera along horizontal X to, horizontal Y to and vertical Z to the position respectively, adjusts through the linkage of manual fine setting platform and first Y to sharp module 911, can guarantee the position accuracy of first set of vision camera 31. It should be noted that the first Y-direction linear module 911 is a linear module developed more thoroughly in the prior art, and the manual fine-tuning platform is also a module developed thoroughly in the prior art, so the detailed structure is not described herein again.
Preferably, as shown in fig. 1 and 4, the display panel inspection apparatus further includes a second camera adjustment assembly 92 and a third camera adjustment assembly, the second camera adjustment assembly 92 is used for adjusting the position of the second group of vision cameras 32 along the horizontal X direction and the horizontal Y direction, and the third camera adjustment assembly is used for adjusting the position of the third group of vision cameras 33 along the horizontal X direction and the horizontal Y direction. Specifically, second camera adjusting part 92 includes X to sharp module 921 and second Y to sharp module 922, wherein, X sets up on crossbeam 61 and is located first Y respectively to sharp module 911 along horizontal Y to both sides to sharp module 921, and X can export horizontal X to rectilinear motion to sharp module 921, and second Y connects in the output of X to sharp module 921 to sharp module 922, and second group vision camera 32 connects the output at second Y to sharp module 922. The second camera adjusting component 92 can adjust the position of the second camera in the horizontal X direction and the horizontal Y direction to meet the adjustment of the shooting position of the display panel. Further, second camera adjustment subassembly 92 still includes manual fine setting platform 923, manual fine setting platform 923 is connected at the output of second Y to sharp module 922, the output at manual fine setting platform 923 is connected to the second group vision camera 32, manual fine setting platform 923 can be respectively to the second group vision camera 32 along horizontal X to, horizontal Y finely tunes to and vertical Z position to, through manual fine setting platform 923 and second Y to sharp module 922, the linkage of X to sharp module 921 is adjusted, can guarantee the position precision of the second group vision camera 32. It should be noted that the second Y-direction linear module 922 and the X-direction linear module 921 are both mature linear modules in the prior art, and the manual fine tuning platform 923 is also a mature module in the prior art, so the specific structure is not described herein again. The third camera adjustment assembly is identical in construction to the second camera adjustment assembly 92 and will not be described in detail herein.
Preferably, as shown in fig. 1 and 5, the display panel detection apparatus further includes a clamping and fixing mechanism 4, the clamping and fixing mechanism 4 includes a rib 41, two sets of X-direction clamping assemblies 42 and a Y-direction clamping assembly (not shown in the drawings), wherein the rib 41 extends along the horizontal X direction and protrudes out of the upper surface of the backlight assembly 2, the two sets of X-direction clamping assemblies 42 are disposed opposite to each other and can output a movement along the horizontal X direction to clamp the display panel along the X direction and make a central line of the display panel extending along the horizontal Y direction coincide with a central line of the backlight assembly 2 extending along the horizontal Y direction, and the Y-direction clamping assembly can output a movement along the horizontal Y direction to clamp the display panel to the rib 41. The display panel can be completely fixed on the backlight assembly 2 through the rib 41, the two sets of the X-direction clamping assemblies 42 and the Y-direction clamping assemblies, and because the central line of the workpiece extending along the horizontal Y-direction coincides with the central line of the backlight assembly 2 extending along the horizontal Y-direction, the first set of the vision cameras 31 does not need to adjust the position along the horizontal X-direction, and when the Y-direction clamping assemblies clamp the display panel on the rib 41, the display panel with different sizes along the horizontal Y-direction can be photographed and detected by adjusting the position of each vision camera along the Y-direction.
Preferably, the two sets of X-direction clamping assemblies 42 are symmetrically disposed with respect to a central line of the backlight assembly 2 along the horizontal Y-direction as a symmetry axis, and the two sets of X-direction clamping assemblies 42 can relatively output movements with the same distance along the horizontal X-direction, respectively, so that the central line of the display panel extending along the horizontal Y-direction coincides with the central line of the backlight assembly 2 extending along the Y-direction while clamping the display panel. Specifically, in the present embodiment, the X-direction clamping assembly 42 includes a linear cylinder and a push plate (not shown in the figure), and the push plate is connected to an output end of the linear cylinder, and the linear cylinder can output a horizontal X-direction motion to clamp the display panel along the horizontal X-direction. Similarly, the Y-direction clamping assembly also comprises a linear cylinder and a push plate, and the linear cylinder of the Y-direction clamping assembly can output horizontal Y-direction motion to drive the push plate to push the display panel. In other embodiments, the specific structure of the X-direction clamping assembly 42 and the Y-direction clamping assembly is not limited.
In order to be suitable for bearing display panels with different dimensions, the size of the backlight assembly 2 is larger, and when a test is performed on a smaller display panel, the light leakage of the portion of the backlight assembly 2 not covered by the display panel affects the detection effect, therefore, as shown in fig. 1 and 5, the display panel detection apparatus further includes a first light shielding assembly 51, a second light shielding assembly 52 and a third light shielding assembly 53, wherein the first light shielding assembly 51 is disposed at one end of the backlight assembly 2 facing away from the baffle 41 along the horizontal Y direction, the first light shielding assembly 51 can shield the portion of the backlight assembly 2 not covered by the display panel along the horizontal Y direction, and the second light shielding assembly 52 and the third light shielding assembly 53 are respectively disposed at two ends of the backlight assembly 2 along the horizontal X direction and can respectively shield the portion of the backlight assembly 2 not covered by the display panel along the horizontal X direction. The first shading component 51, the second shading component 52 and the third shading component 53 can shade the part of the backlight component 2 which is not covered by the display panel, so that light leakage is avoided, and the detection accuracy of the visual camera is ensured.
Specifically, as shown in fig. 6, the first light shielding assembly 51 includes a first rotating shaft 512 and a first light shielding curtain 511, wherein the first rotating shaft 512 is rotatably disposed on a side of the backlight assembly 2 away from the rib 41 and extends along the horizontal direction X, one end of the first light shielding curtain 511 is wound on the first rotating shaft 512, and the other end of the first light shielding curtain 511 can slide along the horizontal direction Y relative to the first frame body 1 and can be locked at any position. Similarly, the second shade assembly 52 includes a second rotating shaft 522 and a second shade 521, the second rotating shaft 522 is rotatably disposed at two ends of the backlight assembly 2 along the horizontal X direction and extends along the horizontal Y direction, one end of the second shade 521 is wound around the second rotating shaft 522, and the other end can slide and be locked at any position along the horizontal X direction relative to the first frame body 1. That is, the first window shade 511 and the second window shade 521 can be pulled to respectively cover the parts of the end parts of the backlight assembly 2 which are not covered by the display panel, and the movable end (i.e. the other end) of the first window shade 511 and the movable end (i.e. the other end) of the second window shade 521 can be locked on the first frame body 1 by adjusting the positions of the movable end (i.e. the other end) of the first window shade 511 and the movable end (i.e. the other end) of the second window shade 521, so as to adjust the size of the light shielding area of the backlight assembly 2, so as to be suitable for the display panels with different dimensions. The third shade element 53 is identical in structure and symmetrically disposed with respect to the second shade element 52, and thus the specific structure of the third shade element 53 will not be described in detail herein.
Further, the first light shielding assembly 51 further includes a first guide rail 513 and a first slider assembly 514, the first guide rail 513 extends along the horizontal Y direction and is disposed at two ends of the backlight assembly 2 along the horizontal X direction, the first slider assembly 514 is connected to the movable end of the first light shielding curtain 511, and the first slider assembly 514 can slide along the first guide rail 513, so as to drive the first light shielding curtain 511 to shield the portion of the backlight assembly 2 not covered by the display panel along the horizontal Y direction. In this embodiment, the first slider assembly 514 includes a first slider body 5141 and a first screwing screw 5142, the first slider body 5141 is in sliding fit with the first guide rail 513, the first screwing screw 5142 is inserted into the first slider body 5141, and screwing the first screwing screw 5142 can enable the first screwing screw 5142 to abut against the first guide rail 513, so that the first slider assembly 514 is locked on the first guide rail 513, and the position of the first window shade 511 is locked. The rolling process of the first window shade 511 and the sliding process of the first sliding block assembly 514 along the first guide rail 513 can be both driven by manual operation or by other mechanical structures, and are not described herein again.
Similarly, the second light shielding assembly 52 further includes a second guide rail 523 and a second slider assembly 524, the second guide rail 523 extends along the horizontal X direction and is disposed at two ends of the backlight assembly 2 along the horizontal Y direction, the second slider assembly 524 is connected to the movable end of the second light shielding curtain 521, and the second slider assembly 524 can slide along the second guide rail 523, so as to drive the second light shielding curtain 521 to shield the portion of the backlight assembly 2 not covered by the display panel along the horizontal X direction. In this embodiment, the second slider assembly 524 includes a second slider body 5241 and a second screwing screw 5242, the second slider body 5241 is in sliding fit with the second guide rail 523, the second screwing screw 5242 is inserted into the second slider body 5241, and the screwing of the second screwing screw 5242 can make the second screwing screw 5242 abut against the second guide rail 523, so that the second slider assembly 524 is locked on the second guide rail 523, and the position of the second window shade 521 is locked, which is simple in structure and convenient to operate. The rolling process of the second window shade 521 and the sliding process of the second slider assembly 524 along the second guide rail 523 can be both driven by manual operation or by other mechanical structures, and are not described herein again.
Preferably, as shown in fig. 6, each set of the X-directional clamping assemblies 42 is disposed at the edge of the movable end of the corresponding second shade 521, and the Y-directional clamping assemblies are disposed at the edge of the movable end of the first shade 511. The first light-shielding curtain 511 and the second light-shielding curtain 521 can be pulled to shield the backlight assembly 2, and simultaneously, the X-direction clamping assembly 42 and the Y-direction clamping assembly can be driven to move, so that the output stroke required by the clamping of the display panel by the X-direction clamping assembly 42 and the Y-direction clamping assembly can be reduced, and the cost of parts is reduced. In order to stably mount the X-directional clamp assembly 42 on the edge of the second shade 521, the edge of the second shade 521 is connected to a support rod, the X-directional clamp assembly 42 is connected to the support rod, and two ends of the support rod are respectively connected to the second slider assemblies 524, and similarly, in order to stably mount the Y-directional clamp assembly on the edge of the first shade 511, the support rod is connected to the edge of the first shade 511, and the Y-directional clamp assembly is disposed on the support rod, and two ends of the support rod are respectively connected to the first slider assemblies 514. In other embodiments, the X-direction clamping assembly 42 and the Y-direction clamping assembly may not be connected to the first slider assembly 514 and the second slider assembly 524, and may be directly disposed on the frame, or may be selectively disposed according to actual needs.
For this reason, as shown in fig. 7 and 8, the display panel detection apparatus further includes an edge light mechanism 7, and the edge light mechanism 7 is disposed at a side of the backlight assembly 2 and used for supplementing light to the display panel on the backlight assembly 2. The sidelight assembly is used for supplementing light to the display panel, so that the display panel detection device is guaranteed to have good detection accuracy for the thicker display panel.
Specifically, as shown in fig. 1, the display panel detection apparatus includes multiple sets of side light mechanisms 7, each side light mechanism 7 includes a position adjustment assembly 71 and a side light source 72 connected to an output end of the position adjustment assembly 71, and the position adjustment assembly 71 can drive the corresponding side light source 72 to move along the vertical Z direction and move in the horizontal plane, so as to meet different light supplement requirements of the display panel.
In this embodiment, the display panel detection apparatus includes three sets of side light mechanisms 7, wherein two sets of first side light mechanisms are respectively disposed at two ends of the backlight assembly 2 along the horizontal X direction, and the other set of second side light mechanisms is disposed at one end of the backlight assembly 2 along the horizontal Y direction. Further, as shown in fig. 7, the position adjusting assembly 71 of the first side-light mechanism includes a horizontal moving assembly 711 disposed along the horizontal X direction and a vertical moving assembly 712 connected to the horizontal moving assembly 711, the side-light sources 72 of the first side-light mechanism are connected to the output end of the corresponding vertical moving assembly 712, and the position adjusting assembly 71 of the first side-light mechanism can adjust the positions of the corresponding side-light sources 72 in the horizontal X direction and the vertical Z direction. As shown in fig. 8, the position adjusting assembly 71 of the second side light mechanism includes a horizontal moving assembly 711 arranged along the horizontal Y direction and a vertical moving assembly 712 connected to an output end of the horizontal moving assembly 711, the side light sources 72 of the second side light mechanism are connected to an output end of the corresponding vertical moving assembly 712, and the position adjusting assembly 71 of the second side light mechanism can adjust positions of the corresponding side light sources 72 in the horizontal Y direction and the vertical Z direction, so as to meet different light supplement requirements.
In this embodiment, as shown in fig. 7 and 8, the horizontal moving component 711 includes a support, a screw rod rotatably connected to the support, and a nut in threaded fit with the screw rod, the screw rod is horizontally disposed, the vertical moving component 712 is fixedly connected to the nut of the horizontal moving component 711, when the screw rod is rotated, the nut drives the vertical moving component 712 to horizontally move along the extending direction of the screw rod, the screw rod is rotated by a manual drive or by other mechanical structures, and the present invention is not limited herein. It should be noted that the screw of the horizontal moving component 711 of the first side light mechanism extends along the horizontal X direction, and the screw of the horizontal moving component 711 of the second side light mechanism extends along the horizontal Y direction.
Further, the vertical moving assembly 712 and the horizontal moving assembly 711 have similar structures and working principles, the vertical moving assembly 712 also includes a bearing frame, a screw rod rotatably connected to the bearing frame, and a nut in threaded fit with the screw rod, the bearing frame is connected with the nut of the horizontal moving assembly 711, the side light 72 is connected with the nut of the corresponding vertical moving assembly 712, when the screw rod of the vertical moving assembly 712 is rotated, the nut can drive the side light 72 to move along the vertical Z direction, and the rotation of the screw rod is driven by a manual or other mechanical structure, which is not limited herein. It should be noted that the second side light mechanism is supported by two sets of position adjusting assemblies 71 because the side light source 72 is long.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the invention and are not intended to limit the embodiments of the present invention, and that the technical spirit of the present invention may be changed by those skilled in the art in the aspects of the specific embodiments and the application scope, and the content of the present specification should not be construed as limiting the invention. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (7)
1. A display panel inspection apparatus, comprising:
a first frame body (1);
the backlight assembly (2) is arranged in the first frame body (1), and the upper surface of the backlight assembly (2) can emit light and is used for supporting a display panel;
the at least two groups of visual cameras are arranged in the first frame body (1) and located in the same horizontal plane above the backlight assembly (2), and can move together along the vertical Z direction and respectively move in the horizontal plane so as to respectively shoot images of different parts of the display panel;
the display panel detection device comprises three groups of visual cameras, wherein:
the projection of a first set of vision cameras (31) on the backlight assembly (2) is located on a midline of the backlight assembly (2) extending in a horizontal Y-direction, the first set of vision cameras (31) being movable in the horizontal Y-direction;
in addition, a second group of visual cameras (32) and a third group of visual cameras (32) are respectively positioned at two sides of the first group of visual cameras (31) along the horizontal Y direction and can respectively move along the horizontal X direction and the horizontal Y direction, and the horizontal X direction is perpendicular to the horizontal Y direction;
display panel detection device still includes centre gripping fixed establishment (4), centre gripping fixed establishment (4) include:
the rib (41) extends along the horizontal X direction and protrudes out of the upper surface of the backlight assembly (2);
two groups of X-direction clamping assemblies (42) which are oppositely arranged and can output the motion of approaching each other along the horizontal X direction so as to clamp the display panel along the X direction and make the central line of the display panel extending along the horizontal Y direction coincide with the central line of the backlight assembly (2) extending along the horizontal Y direction;
a Y-direction clamping component capable of outputting movement along a horizontal Y direction to clamp the display panel to the rib (41);
the display panel detection device further includes:
a first shading component (51) arranged at one end of the backlight component (2) away from the rib (41) along the horizontal Y direction, wherein the first shading component (51) can shade the part of the backlight component (2) which is not covered by the display panel along the horizontal Y direction;
and the second shading component (52) and the third shading component (53) are respectively arranged at two ends of the backlight component (2) along the horizontal X direction and can respectively shade the parts of the two ends of the backlight component (2) along the horizontal X direction which are not covered by the display panel.
2. The display panel inspection apparatus according to claim 1, wherein the first light shield member (51) comprises:
the first rotating shaft (512) is rotatably arranged on one side, away from the rib (41), of the backlight assembly (2) and extends along the horizontal X direction;
one end of the first window shade (511) is wound on the first rotating shaft (512), and the other end of the first window shade can slide along the horizontal Y direction relative to the first frame body (1) and is locked at any position;
the third shading component (53) is arranged symmetrically to the second shading component (52), and the second shading component (52) comprises:
the second rotating shafts (522) are rotatably arranged at two ends of the backlight assembly (2) along the horizontal X direction and extend along the horizontal Y direction;
and one end of the second window shade (521) is wound on the second rotating shaft (522), and the other end of the second window shade can slide along the horizontal X direction relative to the first frame body (1) and is locked at any position.
3. The display panel inspection apparatus of claim 2, wherein each set of the X-directional clamping members (42) is disposed at the other end edge of the second shade (521) at the corresponding side, and the Y-directional clamping members are disposed at the other end edge of the first shade (511).
4. The display panel inspection apparatus according to any one of claims 1 to 3, further comprising a vertical lift mechanism (6), wherein the vertical lift mechanism (6) is configured to drive at least two sets of the vision cameras to move together in a vertical Z direction, and wherein the vertical lift mechanism (6) comprises:
two ends of the cross beam (61) are movably connected with the first frame body (1) respectively, and at least two groups of the vision cameras are movably connected to the cross beam (61);
and the output end of the Z-direction driving component (62) is respectively connected with the two ends of the cross beam (61) and can drive the two ends of the cross beam (61) to synchronously move along the vertical Z direction.
5. The display panel detection apparatus according to any one of claims 1 to 3, further comprising an edge light mechanism (7), wherein the edge light mechanism (7) is disposed at a side of the backlight assembly (2) and is used for supplementing light to a display panel on the backlight assembly (2).
6. The display panel detection apparatus according to claim 5, wherein the display panel detection apparatus comprises a plurality of sets of the side light mechanisms (7), the side light mechanisms (7) comprise a position adjustment assembly (71) and a side light source (72) connected to an output end of the position adjustment assembly (71), and the position adjustment assembly (71) can drive the side light source (72) to move along a vertical Z direction and move in a horizontal plane.
7. A display panel inspection apparatus according to any one of claims 1 to 3, characterized in that the display panel inspection apparatus further comprises a curtain mechanism (8), the curtain mechanism (8) comprising:
the second frame body (81) can be arranged outside the first frame body (1) and is detachably connected with the first frame body (1);
and the curtain (82) is covered on the second frame body (81) and is used for shading the working space of at least two groups of vision cameras.
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| CN114935839B (en) * | 2022-05-17 | 2024-03-19 | 厦门特仪科技有限公司 | LCD display screen repair system based on Demura repair |
| CN114850049B (en) * | 2022-07-08 | 2022-10-21 | 苏州鼎纳自动化技术有限公司 | Notebook computer screen panel defect detection equipment and detection method thereof |
| CN116430611A (en) * | 2022-07-28 | 2023-07-14 | 大鱼视觉技术(河南)有限公司 | Backlight detector |
| CN115508368B (en) * | 2022-11-18 | 2023-03-24 | 锦瑞信息科技(南通)有限公司 | Visual detection natural light source assembly for liquid crystal display panel processing |
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| CN105784723A (en) * | 2014-12-24 | 2016-07-20 | 日东电工株式会社 | Transmission-type defect detection device and transmission-type defect detection method |
| CN105372856A (en) * | 2015-12-14 | 2016-03-02 | 武汉精测电子技术股份有限公司 | Multi-station aligning method and device for detecting large-screen panel based on mechanical arm |
| CN108107614A (en) * | 2017-12-28 | 2018-06-01 | 深圳市华星光电半导体显示技术有限公司 | Show inspection method and display check device |
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