CN218823993U

CN218823993U - Optical detection device for display panel

Info

Publication number: CN218823993U
Application number: CN202222979667.3U
Authority: CN
Inventors: 梁东健
Original assignee: LG Display Optoelectronics Technology China Co Ltd
Current assignee: LG Display Optoelectronics Technology China Co Ltd
Priority date: 2022-11-09
Filing date: 2022-11-09
Publication date: 2023-04-07
Anticipated expiration: 2032-11-09

Abstract

The utility model discloses a display panel optical detection device, including testing platform, first linear drive mechanism, second linear drive mechanism and illuminance sensor, first linear drive mechanism sets up on testing platform, first linear drive mechanism's output and second linear drive mechanism are connected, be used for driving second linear drive mechanism and remove along the X direction, second linear drive mechanism's output is provided with the detector, second linear drive mechanism is used for driving the detector and removes along the Y direction, the X direction is mutually perpendicular with the Y direction, X direction and Y direction all are on a parallel with testing platform, illuminance sensor sets up on testing platform, illuminance sensor is located that first linear drive mechanism and second linear drive mechanism enclose synthetic placing area intra-area. The display panel optical detection device ensures that the illumination of all the lenses is uniform, the output images have no difference and the measurement stability is improved by adjusting the brightness parameters of the lenses in advance to be the same as the brightness output by the measurement images.

Description

Optical detection device for display panel

Technical Field

The utility model relates to a display panel detects technical field, especially relates to a display panel optical detection device.

Background

At present, due to the complexity of the structure and the production process of the display panel, some visual defects are often unavoidable in the manufacturing process, so that before the display panel is subjected to modularized operation, a plurality of CCD cameras are used for photographing and collecting pictures of the display panel to be detected, and the pictures are preprocessed and subjected to characteristic analysis through an image processing system, so that the defect condition of the surface of the display panel is obtained.

The prior art has the following defects: when the CCD camera collects pictures, the brightness parameters of the preset lens and the brightness output by the measured picture are different due to lens atomization, dust or impurity pollution on the surface and the like of each lens, and the measurement stability is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a display panel optical detection device, the bright parameter through the adjustment camera lens in advance is the same with the bright of survey picture output, ensures that each camera lens illuminance is unified, and the output picture does not have the difference, and survey stability improves.

To achieve the purpose, the utility model adopts the following technical proposal:

the utility model provides a display panel optical detection device, includes testing platform, first linear driving mechanism and second linear driving mechanism, first linear driving mechanism set up in testing platform is last, first linear driving mechanism's output with second linear driving mechanism connects, is used for driving second linear driving mechanism removes along the X direction, second linear driving mechanism's output is provided with the detector, and second linear driving mechanism is used for driving the detector removes along the Y direction, the X direction with the Y direction is mutually perpendicular, and X direction and Y direction all are on a parallel with testing platform, still includes:

and the illumination sensor is arranged on the detection platform and is positioned in a placement area enclosed by the first linear driving mechanism and the second linear driving mechanism.

As a preferred scheme of the optical detection device for the display panel, the first linear driving mechanism includes two first linear guide rails arranged along the X direction, the second linear driving mechanism includes two second linear guide rails arranged on the two first linear guide rails and moving along the Y direction, and the display panel to be detected is placed in a placement area surrounded by the two first linear guide rails and the two second linear guide rails.

As a preferable scheme of the optical detection device for the display panel, a plurality of detectors are provided, and the number of the illuminance sensors corresponds to the number of the detectors one by one.

As a preferable scheme of the optical detection device for a display panel, two detectors are arranged on each second linear guide rail, and four illumination sensors are located at four corners of the placement area.

As a preferable scheme of the display panel optical detection apparatus, the apparatus further comprises a remote controller and a display, the remote controller is electrically connected with the display to output a detection picture of the detector, and the remote controller is electrically connected with the detector to adjust an illumination parameter of the detector.

As a preferable scheme of the display panel optical detection device, a soot blowing assembly is arranged on the detector and is used for blowing soot to a lens of the detector.

As a preferred scheme of the optical detection device of the display panel, the soot blowing assembly comprises an air faucet arranged on one side of the detector, the air faucet is communicated with an air supply device, and the blowing direction of the air faucet is parallel to the lens surface of the detector and right opposite to the side surface of the lens or is arranged at an acute angle with the lens surface of the detector.

As a preferable embodiment of the optical detection device for a display panel, the illuminance sensor is movably disposed on the detection platform.

As a preferable mode of the optical detection device for a display panel, the detector is detachably mounted on the second linear guide.

As a preferred scheme of display panel optical detection device, one side of detector is provided with the draw runner, the draw runner is kept away from one side of detector is provided with spacing perpendicularly, the draw runner with spacing becomes the contained angle setting, the spout has been seted up along vertical direction to one side of second linear guide, the one end of spout is run through second linear guide's top surface and not run through second linear guide's bottom surface, spacing card is established in the spout.

The utility model has the advantages that: the utility model provides a display panel optical detection device is through add illuminance sensor on testing platform. Before the detector moves to the position above the display panel to be detected to take a picture for collection, the first linear driving mechanism and the second linear driving mechanism are used for moving to the position of the illumination sensor to carry out illumination measurement, the illumination brightness fed back to the detector by the illumination sensor is compared with the preset illumination, and the illumination during taking a picture is automatically adjusted, so that the brightness output by a measured picture of the detector is ensured to be the same as the preset illumination parameter, and the measurement stability is improved.

Drawings

Fig. 1 is a top view of an optical inspection apparatus for a display panel according to an embodiment of the present invention.

Fig. 2 is an enlarged view at a in fig. 1.

Fig. 3 is a schematic sectional view taken along line B-B in fig. 1.

Fig. 4 is a top view of a display panel optical detection device according to a second embodiment of the present invention.

In the figure:

100. a detector; 200. a lens;

1. detecting a platform; 11. a placement area;

2. a first linear drive mechanism; 21. a first linear guide rail;

3. a second linear drive mechanism; 31. a second linear guide rail;

4. an illuminance sensor; 5. a remote controller; 6. a display; 7. an air tap; 8. a gas supply device; 9. a slide bar; 10. a limiting strip; 12. a chute; 13. a third linear drive mechanism; 14. and a fourth linear drive mechanism.

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 associated with the present invention are shown in the drawings, not all of them.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. 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. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning 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.

Example one

Referring to fig. 1 to fig. 3, the present embodiment provides an optical detection apparatus for a display panel, which includes a detection platform 1, a first linear driving mechanism 2, and a second linear driving mechanism 3. The first linear driving mechanism 2 is arranged on the detection platform 1, an output end of the first linear driving mechanism 2 is connected with the second linear driving mechanism 3 and used for driving the second linear driving mechanism 3 to move along the X direction, an output end of the second linear driving mechanism 3 is provided with the detector 100, the second linear driving mechanism is used for driving the detector 100 to move along the Y direction, the X direction is perpendicular to the Y direction, and the X direction and the Y direction are both parallel to the detection platform.

In summary, the first linear driving mechanism 2 drives the second linear driving mechanism 3 to move, and the second linear driving mechanism 3 drives the detector 100 to move, so that the detector 100 can move along the X direction and the Y direction to the placing area 11 enclosed by the first linear driving mechanism 2 and the second linear driving mechanism 3.

Specifically, as shown in fig. 1, the first linear driving mechanism 2 includes two first linear guide rails 21 arranged along the X direction, the second linear driving mechanism 3 includes two second linear guide rails 31 arranged on the two first linear guide rails 21 and moving along the Y direction, the display panel to be tested is placed in the rectangular placement area 11 enclosed by the two first linear guide rails 21 and the two second linear guide rails 31, and the testing apparatus 100 can move to any position of the placement area 11.

Illustratively, the first linear guide 21 and the second linear guide 31 are both KK modules. Of course, in other embodiments, all the embodiments can implement linear motion along the X direction or the Y direction, such as an air cylinder, a screw mechanism, and the like, which is not particularly limited in this embodiment. The detector of the embodiment is preferably a CCD camera, which provides high image resolution, small volume, light weight, is not affected by the field, and has characteristics of vibration and impact resistance.

Based on the above, due to the fact that the lens 200 of the detector 100 is prone to lens fogging, and the surface is contaminated by dust or impurities, the difference exists between the preset brightness parameter of the lens 200 and the brightness output by the measurement picture, and the measurement stability is poor.

In order to solve the above problem, as shown in fig. 1, the optical detection apparatus for a display panel of the present embodiment further includes an illuminance sensor 4, the illuminance sensor 4 is disposed on the detection platform 1, and the illuminance sensor 4 is located in the placement area 11.

It can be understood that, by adding the illuminance sensor 4 on the detection platform 1. Before the detector 100 moves above a display panel to be detected to take a picture for collection, the detector is moved to the position of the illumination sensor 4 through the first linear driving mechanism 2 and the second linear driving mechanism 3 to measure the illumination, the illumination brightness fed back to the detector 100 by the illumination sensor 4 is compared with the preset illumination, and the illumination during taking a picture is automatically adjusted, so that the brightness output by a measured picture of the detector 100 is ensured to be the same as the preset illumination parameter, and the measurement stability is improved.

Wherein, the illumination represents the physical quantity of the brightness degree of the illuminated surface, and the illumination of a point on the surface is defined as the ratio of the luminous flux incident on the surface element of the point to the area of the surface element.

Specifically, the inspection apparatus 100 is provided in plural numbers, and the number of the illuminance sensors 4 matches the number of the inspection apparatus 100. Two detectors 100 are disposed on each second linear guide 31 of the present embodiment, and four illuminance sensors 4 are located at four corners of the placement area 11. The number of the illuminance sensors 4 corresponding to the number of the detectors 100 is one-to-one, so that illuminance adjustment can be performed on a plurality of detectors 100 at the same time, and illuminance uniformity and adjustment efficiency are higher.

As shown in fig. 1, the display panel optical detection apparatus of the present embodiment further includes a remote controller 5 and a display 6, the remote controller 5 is electrically connected to the display 6 to output a detection image of the detector 100, and the remote controller 5 is electrically connected to the detector 100 to adjust an illumination parameter of the detector 100.

It can be understood that the detector 100 moves to the position above the illuminance sensor 4 to perform illuminance acquisition, if the illuminance is greater than or less than the preset illuminance parameter of the detector 100, the remote controller 5 controls the detector 100 to compare and adjust the illuminance acquisition difference with the preset illuminance parameter, and after the adjustment is completed, the detector 100 performs photographing acquisition on the display panel, so as to ensure that the illuminance of the detection picture output on the display 6 is consistent with the preset illuminance parameter.

Further, the illumination difference is reduced in order to remove dust on the lens 200 of the inspection apparatus 100. As shown in FIG. 3, the detector 100 is provided with a soot blowing assembly for blowing soot to the lens 200 of the detector 100. Specifically, the soot blowing assembly includes an air nozzle 7 disposed at one side of the detector 100, the air nozzle 7 is communicated with an air supply device 8, and the air supply device 8 is an air pump. By starting the air pump, the air outlet end of the air pump is communicated with the air pipe to supply air to the air nozzle 7, so that dust and impurities on the lens 200 are blown away.

Wherein, the blowing direction of air cock 7 is parallel to the surface of lens 200 of detector 100 and just faces the side of lens 200, or is arranged at an acute angle with the surface of lens 200 of detector 100, ensuring that air cock 7 can blow towards the surface of lens 200, and the position of air cock 7 is always located outside the imaging range of lens 200, so as to avoid the setting of air cock 7 to interfere with the photographing of detector 100.

As shown in FIGS. 1 and 2, the test meter 100 may be removably mounted to the second linear guide 31 to facilitate removal of the test meter 100 for battery replacement or maintenance, etc. Specifically, one side of the detector 100 is vertically provided with a slide bar 9, one side of the slide bar 9, which is far away from the detector 100, is vertically provided with a limiting bar 10, the slide bar 9 and the limiting bar 10 are arranged at an included angle, that is, the slide bar 9 and the limiting bar 10 are in a T shape, one side of the second linear guide rail 31 is provided with a sliding groove 12 along the vertical direction, the cross section of the sliding groove 12 is also in a T shape, the sliding groove 12 penetrates through the second linear guide rail 31 towards one side of the detector 100, so that the synchronous part of the slide bar 9, which is connected with the detector 100, can be arranged in the sliding groove 12, one end of the sliding groove 12 penetrates through the top surface of the second linear guide rail 31 and does not penetrate through the bottom surface of the second linear guide rail 31, and the limiting bar 10 is clamped in the sliding groove 12.

It can be understood that, when the entire detecting instrument 100 needs to be detached, the detecting instrument 100 is held by hand to move the slide bar 9 and the limiting bar 10 upward along the vertical direction until the slide bar passes through the top surface of the second linear guide rail 31 through the slide groove 12 and is separated from the slide groove 12; during the installation, with in slide 9 and spacing 10 alignment spout 12 and insert spout 12 downwards along vertical direction, until its butt to spout 12's diapire on can, the ann tears convenient and efficiency higher open.

Example two

As shown in fig. 4, the optical detection apparatus for a display panel provided in this embodiment has substantially the same structure as the optical detection apparatus for a display panel provided in the first embodiment, and the main differences between the two apparatuses are: the illuminance sensor 4 is movably disposed on the detection platform 1. Specifically, one illuminance sensor 4 is arranged, a third linear driving mechanism 13 capable of moving along the X direction is arranged on the detection platform 1, a fourth linear driving mechanism 14 capable of moving along the Y direction is vertically arranged at an output end of the third linear driving mechanism 13, and an output end of the fourth linear driving mechanism 14 is connected with the illuminance sensor 4, so that the illuminance sensor 4 is driven to correspondingly move to the lower side of the detector 100.

Preferably, the third linear driving mechanism includes two third linear guide rails arranged along the X direction, and the fourth linear driving mechanism includes two fourth linear guide rails arranged on the two third linear guide rails and moving along the Y direction, and exemplarily, the third linear guide rail and the fourth linear guide rail are both KK modules. Of course, in other embodiments, all the embodiments can implement linear motion along the X direction or the Y direction, such as an air cylinder, a screw mechanism, and the like, which is not particularly limited in this embodiment.

It is to be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. 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

1. The utility model provides a display panel optical detection device, includes testing platform, first linear driving mechanism and second linear driving mechanism, first linear driving mechanism set up in testing platform is last, first linear driving mechanism's output with second linear driving mechanism connects, is used for driving second linear driving mechanism removes along the X direction, second linear driving mechanism's output is provided with the detector, second linear driving mechanism is used for driving the detector removes along the Y direction, the X direction with the Y direction is mutually perpendicular, the X direction with the Y direction all is on a parallel with testing platform, its characterized in that still includes:

2. The optical inspection apparatus for display panels as claimed in claim 1, wherein the first linear driving mechanism includes two first linear guides disposed along the X direction, the second linear driving mechanism includes two second linear guides disposed on the two first linear guides and moving along the Y direction, and the display panel to be inspected is disposed in a disposing area defined by the two first linear guides and the two second linear guides.

3. The optical detection apparatus for a display panel according to claim 2, wherein the detector is provided in plurality, and the number of the illuminance sensors corresponds to the number of the detectors one to one.

4. The optical detection apparatus for a display panel according to claim 3, wherein two detectors are disposed on each of the second linear guides, and four of the illuminance sensors are disposed at four corners of the placement area.

5. The apparatus according to any one of claims 1 to 4, further comprising a remote controller and a display, wherein the remote controller is electrically connected to the display to output a detection screen of the detector, and the remote controller is electrically connected to the detector to adjust an illumination parameter of the detector.

6. The display panel optical detection device of any one of claims 1 to 4, wherein a soot blowing assembly is provided on the detector for blowing soot to a lens of the detector.

7. The optical detection device for the display panel according to claim 6, wherein the soot blowing assembly includes an air nozzle disposed at one side of the detector, the air nozzle is connected to an air supply device, and the blowing direction of the air nozzle is parallel to the lens surface of the detector and faces the side of the lens, or is disposed at an acute angle with the lens surface of the detector.

8. The optical inspection apparatus for display panels as claimed in claim 1, wherein the illumination sensor is movably disposed on the inspection platform.

9. The optical inspection apparatus for display panels as claimed in claim 2, wherein the inspection apparatus is detachably mounted on the second linear guide.

10. The optical detection device for the display panel according to claim 9, wherein a slide bar is disposed on one side of the detector, a limit bar is vertically disposed on one side of the slide bar away from the detector, the slide bar and the limit bar form an included angle, a sliding groove is vertically disposed on one side of the second linear guide rail, one end of the sliding groove penetrates through a top surface of the second linear guide rail and does not penetrate through a bottom surface of the second linear guide rail, and the limit bar is clamped in the sliding groove.