CN109079315B - Light guide plate inspection device and method - Google Patents
Light guide plate inspection device and method Download PDFInfo
- Publication number
- CN109079315B CN109079315B CN201811134876.XA CN201811134876A CN109079315B CN 109079315 B CN109079315 B CN 109079315B CN 201811134876 A CN201811134876 A CN 201811134876A CN 109079315 B CN109079315 B CN 109079315B
- Authority
- CN
- China
- Prior art keywords
- laser
- light guide
- guide plate
- dot
- angle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/70—Auxiliary operations or equipment
- B23K26/702—Auxiliary equipment
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention provides a light guide plate inspection device, comprising: two of the laser modules are fixed on a slideway at one side of the laser platform through a sliding block, and the other two laser modules are fixed on a slideway at the other side of the laser platform; the laser beam emitted by the laser emitter is input to the reflecting mirror of the laser module through a transmission light path and then is sequentially transmitted to the light guide plate through the beam splitter and the focusing mirror of the lens barrel; the device also comprises four CCD image sensors which are respectively arranged below the four lens cones, the CCD image sensors move synchronously along with the lens cones, and in the forming process of the mesh points on the surface of the light guide plate, the CCD image sensors detect each mesh point in real time, record the mesh point distribution and the mesh point regularity, transmit the mesh point state to an upper computer in real time, and form a mesh point image on the upper computer.
Description
Technical Field
The invention relates to the technical field of light guide plate manufacturing, in particular to a light guide plate inspection device and a light guide plate inspection method.
Background
At present, the development trend of the TV display industry shows the characteristics of large size, thinness, low power consumption, high color gamut, high brightness and the like, and the laser dot light guide plate has the remarkable characteristics of ultra-thinness, high brightness, uniform light guide, short development period, energy conservation, environmental protection, no dark space, durability, difficult yellowing, low reject ratio and the like, so that the development requirement of the current display industry can be met.
However, the production efficiency of the laser light guide plate is lower than that of printing, a large amount of manpower is required for the inspection work of a macroscopic picture, and the cost of manpower, material resources, financial resources and the like is high.
How to provide a device for automatically inspecting a light guide plate is an urgent problem to be solved at present.
Disclosure of Invention
The invention provides a light guide plate inspection device and a light guide plate inspection method, which solve the problem that the light guide plate needs to be inspected manually in the prior art.
The technical scheme of the invention is realized as follows:
a light guide plate inspection device comprising:
two of the laser modules are fixed on a slideway at one side of the laser platform through a sliding block, and the other two laser modules are fixed on a slideway at the other side of the laser platform; each laser module includes: the reflecting mirror and the lens barrel are arranged on the sliding block, the reflecting mirror is arranged above the lens barrel, and the lens barrel comprises a beam splitter and a focusing mirror; one side of the lens cone only works on odd-numbered lines of dots, and the other side of the lens cone only works on even-numbered lines of dots;
the laser beam emitted by the laser emitter is input to the reflecting mirror of the laser module through a transmission light path and then is sequentially transmitted to the light guide plate through the beam splitter and the focusing mirror of the lens barrel;
the device also comprises four CCD image sensors which are respectively arranged below the four lens cones, the CCD image sensors synchronously move along with the lens cones, and in the process of forming the mesh points on the surface of the light guide plate, the CCD image sensors detect each mesh point in real time, record the mesh point distribution and the mesh point regularity, transmit the mesh point state to an upper computer in real time and form a mesh point image on the upper computer;
after the whole light guide plate is processed, the CCD image sensor synchronously transmits the dot state of the whole light guide plate to an upper computer, and a dot image is formed in the upper computer.
Optionally, the device further comprises a height adjusting block and an angle adjusting block, the height adjusting block is installed below the sliding block, the angle adjusting block is installed above one of the lens cones, the two lens cones on the same side share one height adjusting block and one angle adjusting block, and the angle of the dot pitch between the dot patterns on the dot pattern file preset on the two lens cones on the same side is adjusted by adjusting the angle adjusting block.
Optionally, the height adjusting process of the height adjusting block includes:
the height of the lens cone is estimated in advance, an estimated value is set by matching a height adjusting block with a height adjusting scale, then 2 100-100 adjusting jig plates are taken, the edge of one adjusting jig plate is obliquely placed on the edge of the other adjusting jig plate, laser processing is started, if the mesh points after laser are located in the middle of the oblique adjusting jig plate, the height adjustment is correct, application is locked, and if the mesh points of the oblique adjusting jig plate are deviated in the laser mode, the height of the lens cone needs to be continuously adjusted until the mesh points are located in the middle.
Optionally, the angle adjustment process of the angle adjustment block includes:
the line spacing of the dots corresponds to the angle of the lens cone, the angle is adjusted through an angle adjusting ruler, the machine starts to process, and whether the line spacing of the dots is a preset value or not is measured, or whether the angle adjustment is accurate or not is judged according to the rule of arrangement of a plurality of rows of laser dots or not; if the line spacing is deviated, the line spacing of the net points is controlled by the up-down angle adjusting block.
Based on the apparatus according to any of the foregoing alternative embodiments, the present invention further provides a light guide plate inspection method, including the following steps: in the process of forming the dots on the surface of the light guide plate, a CCD image sensor detects each dot in real time, records the dot distribution and dot regularity, transmits the dot state to an upper computer in real time, and forms a dot image on the upper computer; after the whole light guide plate is processed, the CCD image sensor synchronously transmits the dot state of the whole light guide plate to an upper computer, and a dot image is formed in the upper computer.
Optionally, the method further comprises a height adjustment process comprising the steps of:
the height of the lens cone is estimated in advance, an estimated value is set by matching a height adjusting block with a height adjusting scale, then 2 100-100 adjusting jig plates are taken, the edge of one adjusting jig plate is obliquely placed on the edge of the other adjusting jig plate, laser processing is started, if the mesh points after laser are located in the middle of the oblique adjusting jig plate, the height adjustment is correct, application is locked, and if the mesh points of the oblique adjusting jig plate are deviated in the laser mode, the height of the lens cone needs to be continuously adjusted until the mesh points are located in the middle.
Optionally, the method further comprises an angle adjustment process, comprising the steps of:
the line spacing of the dots corresponds to the angle of the lens cone, the angle is adjusted through an angle adjusting ruler, the machine starts to process, and whether the line spacing of the dots is a preset value or not is measured, or whether the angle adjustment is accurate or not is judged according to the rule of arrangement of a plurality of rows of laser dots or not; if the line spacing is deviated, the line spacing of the net points is controlled by the up-down angle adjusting block.
The invention has the beneficial effects that:
when the laser mesh points are used, the space between the mesh points and the surface flatness of the LGP around the mesh points are detected, the LGP is detected in real time, and the rear-end drawing inspection manpower is omitted, so that the labor cost is reduced, and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a light guide plate inspection apparatus according to an exemplary embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 shows an alternative embodiment of the active inspection device for light guide plates.
In this alternative embodiment, the apparatus comprises: two of the four laser modules 10 are fixed on the slideway 2 at one side of the laser platform through the slide block 3, and the other two laser modules are fixed on the slideway at the other side of the laser platform; each laser module 10 comprises: the reflecting mirror 4 and the lens barrel 5 are mounted on the sliding block, the reflecting mirror is mounted above the lens barrel, and the lens barrel 5 comprises a beam splitter and a focusing mirror; one side of the lens cone only works on odd-numbered lines of dots, and the other side of the lens cone only works on even-numbered lines of dots.
The device also comprises a laser transmitter, wherein laser beams transmitted by the laser transmitter are input to the reflecting mirror 4 of the laser module through a transmission light path and then are sequentially transmitted to the light guide plate through the beam splitter and the focusing mirror of the lens cone 5.
The device also comprises four CCD image sensors 6 which are respectively arranged below the four lens cones, the CCD image sensors move synchronously along with the lens cones 5, and in the forming process of the mesh points on the surface of the light guide plate, the CCD image sensors detect each mesh point in real time, record the distribution and regularity of the mesh points, transmit the state of the mesh points to an upper computer in real time, and form a mesh point image on the upper computer. After the whole light guide plate is processed, the CCD image sensor synchronously transmits the dot state of the whole light guide plate to an upper computer, and a dot image is formed in the upper computer. The CCD image sensor can convert the light of the laser mesh points into electric charges, the electric charges are converted into digital signals through an analog-to-digital converter chip, the digital signals are transmitted to a computer after being compressed, and the mesh point images are generated through image generation software. For example: the lens cone splits and focuses a laser beam, when laser starts, the CCD image sensor starts to synchronously work with a track, when a mesh point is formed on the surface of the light guide plate, the back CCD image sensor immediately collects the mesh point, records the state (including the size and the shape of the mesh point) of the mesh point, and transmits the state to software designed in advance by a computer through the CCD image sensor; every time a dot is produced, the CCD image sensor transmits a dot to a computer; if the dot spacing is consistent with the dot image file designed in advance, the dot state transmitted back to the computer is green, and if the CCD image sensor finds that the dot spacing is changed, the dot state transmitted back to the computer is changed into red; after the laser processing of the whole light guide plate is finished, the dot layout of the whole layout can be seen in computer software, and the red area position is a dot abnormal area which indicates that the light guide plate is abnormal in processing.
By adopting the optional embodiment, the laser mesh points are detected, the space between the mesh points and the surface flatness of the LGP around the mesh points are detected, the LGP is detected in real time, and the manpower for detecting the rear-end picture is removed, so that the labor cost is reduced and the production efficiency is improved.
Optionally, the device further comprises a height adjusting block 7 and an angle adjusting block 8, the height adjusting block is installed below the sliding block, the angle adjusting block is installed above one of the lens cones, the two lens cones on the same side share one height adjusting block and one angle adjusting block, and the angle of the dot pitch between the dot patterns on the dot pattern file preset on the two lens cones on the same side is adjusted by adjusting the angle adjusting block.
Optionally, the CCD image sensor 6 needs to be close to the laser surface by 1-2 mm, and works and moves along the same track with the lens barrel 5.
Optionally, the height adjusting process of the height adjusting block includes: the height of the lens cone is estimated in advance, an estimated value is set by matching a height adjusting block with a height adjusting scale, then 2 100-100 adjusting jig plates are taken, the edge of one adjusting jig plate is obliquely placed on the edge of the other adjusting jig plate, laser processing is started, if the mesh points after laser are located in the middle of the oblique adjusting jig plate, the height adjustment is correct, application is locked, and if the mesh points of the oblique adjusting jig plate are deviated in the laser mode, the height of the lens cone needs to be continuously adjusted until the mesh points are located in the middle.
Optionally, the angle adjustment process of the angle adjustment block includes: the line spacing of the dots corresponds to the angle of the lens cone, the angle is adjusted through an angle adjusting ruler, the machine starts to process, and whether the line spacing of the dots is a preset value or not is measured, or whether the angle adjustment is accurate or not is judged according to the rule of arrangement of a plurality of rows of laser dots or not; if the line spacing is deviated, the line spacing of the net points is controlled by the up-down angle adjusting block. For example, a 100 x 100 focus adjustment jig plate is taken and placed on a laser platform, and mesh point laser is performed by using a pre-designed focus adjustment mesh point design; if the designed dot line spacing is 0.8mm, the angle of a lens cone is estimated in advance to be 10 degrees, the angle is adjusted to be 10 degrees through an angle adjusting ruler, a machine platform starts to process, the dot laser is applied to a 100 x 100 focal length adjusting jig plate, and whether the dot line spacing is 0.8mm or not is observed through vernier caliper measurement or a high power microscope, or whether the arrangement of multiple rows of laser dots is regular or not is judged to be accurate; if the line spacing is deviated, the line spacing of the net points is controlled to be 0.8mm by the up-down angle adjusting block.
Based on the light guide plate inspection device, the invention also provides a light guide plate inspection method, which comprises the following steps: in the process of forming the dots on the surface of the light guide plate, a CCD image sensor detects each dot in real time, records the dot distribution and dot regularity, transmits the dot state to an upper computer in real time, and forms a dot image on the upper computer; after the whole light guide plate is processed, the CCD image sensor synchronously transmits the dot state of the whole light guide plate to an upper computer, and a dot image is formed in the upper computer.
Optionally, the method further comprises a height adjustment process comprising the steps of: the height of the lens cone is estimated in advance, an estimated value is set by matching a height adjusting block with a height adjusting scale, then 2 100-100 adjusting jig plates are taken, the edge of one adjusting jig plate is obliquely placed on the edge of the other adjusting jig plate, laser processing is started, if the mesh points after laser are located in the middle of the oblique adjusting jig plate, the height adjustment is correct, application is locked, and if the mesh points of the oblique adjusting jig plate are deviated in the laser mode, the height of the lens cone needs to be continuously adjusted until the mesh points are located in the middle.
Optionally, the method further comprises an angle adjustment process, the angle adjustment process comprising the steps of: the line spacing of the dots corresponds to the angle of the lens cone, the angle is adjusted through an angle adjusting ruler, the machine starts to process, and whether the line spacing of the dots is a preset value or not is measured, or whether the angle adjustment is accurate or not is judged according to the rule of arrangement of a plurality of rows of laser dots or not; if the line spacing is deviated, the line spacing of the net points is controlled by the up-down angle adjusting block. For example, a 100 x 100 focus adjustment jig plate is taken and placed on a laser platform, and mesh point laser is performed by using a pre-designed focus adjustment mesh point design; if the designed dot line spacing is 0.8mm, the angle of a lens cone is estimated in advance to be 10 degrees, the angle is adjusted to be 10 degrees through an angle adjusting ruler, a machine platform starts to process, the dot laser is applied to a 100 x 100 focal length adjusting jig plate, and whether the dot line spacing is 0.8mm or not is observed through vernier caliper measurement or a high power microscope, or whether the arrangement of multiple rows of laser dots is regular or not is judged to be accurate; if the line spacing is deviated, the line spacing of the net points is controlled to be 0.8mm by the up-down angle adjusting block.
By adopting the optional embodiment, the method detects the dot spacing and the surface flatness of the LGP around the dot while the laser dots are scanned, detects the LGP in real time, and avoids the manpower of rear-end drawing inspection, thereby reducing the labor cost and improving the production efficiency.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (5)
1. A light guide plate inspection device, comprising:
two of the laser modules are fixed on a slideway at one side of the laser platform through a sliding block, and the other two laser modules are fixed on a slideway at the other side of the laser platform; each laser module includes: the reflecting mirror and the lens barrel are arranged on the sliding block, the reflecting mirror is arranged above the lens barrel, and the lens barrel comprises a beam splitter and a focusing mirror; one side of the lens cone only works on odd-numbered lines of dots, and the other side of the lens cone only works on even-numbered lines of dots;
the laser beam emitted by the laser emitter is input to the reflecting mirror of the laser module through a transmission light path and then is sequentially transmitted to the light guide plate through the beam splitter and the focusing mirror of the lens barrel;
the device also comprises four CCD image sensors which are respectively arranged below the four lens cones, the CCD image sensors synchronously move along with the lens cones, and in the process of forming the mesh points on the surface of the light guide plate, the CCD image sensors detect each mesh point in real time, record the mesh point distribution and the mesh point regularity, transmit the mesh point state to an upper computer in real time and form a mesh point image on the upper computer;
after the whole light guide plate is processed, synchronously transmitting the dot state of the whole light guide plate to an upper computer by a CCD image sensor, and forming a dot image in the upper computer;
the CCD image sensor needs to be close to the laser surface by 1-2 mm, and works and moves with the lens cone on the same track.
2. The device according to claim 1, further comprising a height adjustment block and an angle adjustment block, wherein the height adjustment block is installed below the slide block, the angle adjustment block is installed above one of the lens barrels, and the two lens barrels on the same side share one height adjustment block and one angle adjustment block, and the angle of the two lens barrels on the same side is adjusted to be the dot pitch angle of the preset dot pattern file by adjusting the angle adjustment block.
3. The apparatus of claim 2, wherein the angle adjustment process of the angle adjustment block comprises:
the line spacing of the dots corresponds to the angle of the lens cone, the angle is adjusted through an angle adjusting ruler, the machine starts to process, and whether the line spacing of the dots is a preset value or not is measured, or whether the angle adjustment is accurate or not is judged according to the rule of arrangement of a plurality of rows of laser dots or not; if the line spacing is deviated, the line spacing of the net points is controlled by the up-down angle adjusting block.
4. A light guide plate inspection method based on the device of any one of claims 1 to 3, comprising the steps of: in the process of forming the dots on the surface of the light guide plate, a CCD image sensor detects each dot in real time, records the dot distribution and dot regularity, transmits the dot state to an upper computer in real time, and forms a dot image on the upper computer; after the whole light guide plate is processed, the CCD image sensor synchronously transmits the dot state of the whole light guide plate to an upper computer, and a dot image is formed in the upper computer.
5. The method of claim 4, further comprising an angle adjustment process comprising the steps of:
the line spacing of the dots corresponds to the angle of the lens cone, the angle is adjusted through an angle adjusting ruler, the machine starts to process, and whether the line spacing of the dots is a preset value or not is measured, or whether the angle adjustment is accurate or not is judged according to the rule of arrangement of a plurality of rows of laser dots or not; if the line spacing is deviated, the line spacing of the net points is controlled by the up-down angle adjusting block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134876.XA CN109079315B (en) | 2018-09-28 | 2018-09-28 | Light guide plate inspection device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811134876.XA CN109079315B (en) | 2018-09-28 | 2018-09-28 | Light guide plate inspection device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109079315A CN109079315A (en) | 2018-12-25 |
| CN109079315B true CN109079315B (en) | 2020-10-23 |
Family
ID=64842551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811134876.XA Active CN109079315B (en) | 2018-09-28 | 2018-09-28 | Light guide plate inspection device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109079315B (en) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105345266A (en) * | 2015-11-20 | 2016-02-24 | 苏州光韵达光电科技有限公司 | Laser type carving device of light guide plate |
| KR101793620B1 (en) * | 2017-05-12 | 2017-11-10 | 주식회사 루피너스 | Light guiding plate module for side emitting type of LED lighting device |
| CN206998044U (en) * | 2017-06-26 | 2018-02-13 | 苏州亿光源光电科技有限公司 | A kind of laser machine for metal light guide plate |
| CN207119891U (en) * | 2017-08-25 | 2018-03-20 | 青岛理工大学 | Binary channels object lens focus on light guide plate mesh point beam splitting laser processing unit (plant), system |
| CN107953035B (en) * | 2017-10-26 | 2019-12-03 | 青岛骐骥光电科技有限公司 | A kind of light guide plate laser mentions the device of effect |
| CN107900511B (en) * | 2017-10-31 | 2019-12-24 | 青岛理工大学 | Processing device and method for combining scattering mesh point processing and quality detection of light guide plate |
| CN108526732A (en) * | 2018-06-14 | 2018-09-14 | 青岛理工大学 | A kind of device and method of synchronous dual output laser half way processing light guide plate |
| CN208961229U (en) * | 2018-09-28 | 2019-06-11 | 青岛骐骥光电科技有限公司 | A kind of leaded light panel inspection |
-
2018
- 2018-09-28 CN CN201811134876.XA patent/CN109079315B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109079315A (en) | 2018-12-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8055058B2 (en) | Apparatus and method for detecting defects in wafer using line sensor camera | |
| CN106133898B (en) | Variable image field curvature for object inspection | |
| WO2009110518A1 (en) | Electronic component inspecting method and apparatus used in the method | |
| US20090147245A1 (en) | System and method for measuring optical resolution of lens | |
| TWI396824B (en) | Method and device for optically measuring the surface of a product | |
| KR101492778B1 (en) | Continuous scan type measuring apparatus | |
| JP2010175491A (en) | Apparatus and method for inspecting nozzle plate | |
| CN115791837B (en) | Micro-LED defect light detection probe and defect detection method | |
| CN105424721A (en) | Metal strain gauge defect automatic detection system | |
| JP6461555B2 (en) | Bump inspection device | |
| JP5034891B2 (en) | Apparatus for measuring shape of transparent plate and method for producing plate glass | |
| CN203203941U (en) | Optical defect detection device | |
| EP3537214B1 (en) | Image inspection device | |
| CN109079315B (en) | Light guide plate inspection device and method | |
| CN102680497A (en) | Device for detecting pattern defects | |
| US20090219520A1 (en) | Apparatus and method for inspecting a surface of a wafer | |
| WO2012042715A1 (en) | Inspection device | |
| JP2012247743A (en) | Chart for checking resolution and method for checking resolution | |
| CN219104696U (en) | Array type image detection device | |
| CN208961229U (en) | A kind of leaded light panel inspection | |
| JP6031265B2 (en) | Parts inspection device | |
| JP2001281166A (en) | Method and device for inspecting defect in cyclic pattern | |
| WO2020087897A1 (en) | Image processing apparatus | |
| CN109682323A (en) | A kind of quality detection platform and its CCD rapid detection method and system | |
| CN214767039U (en) | Plate detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200303 Address after: No.36, Yuyuan Third Road, Jihongtan street, Chengyang District, Qingdao, Shandong Province Applicant after: Qingdao Guoqi Photoelectric Technology Co., Ltd Address before: 266000 Shandong Province, Qingdao city Chengyang District Qing Xia Road No. 51 Applicant before: Qingdao Qiji Photoelectric Technology Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |