CN115940812A - Reverse backpressure probe type current-voltage testing device and method - Google Patents
Reverse backpressure probe type current-voltage testing device and method Download PDFInfo
- Publication number
- CN115940812A CN115940812A CN202211706776.6A CN202211706776A CN115940812A CN 115940812 A CN115940812 A CN 115940812A CN 202211706776 A CN202211706776 A CN 202211706776A CN 115940812 A CN115940812 A CN 115940812A
- Authority
- CN
- China
- Prior art keywords
- calibration
- test
- alignment line
- light
- back pressure
- 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.)
- Pending
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 71
- 239000000523 sample Substances 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title abstract description 6
- 230000005540 biological transmission Effects 0.000 claims description 11
- 238000010998 test method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 claims 2
- 230000000694 effects Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 3
- 229920000144 PEDOT:PSS Polymers 0.000 description 2
- 230000001678 irradiating effect Effects 0.000 description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Landscapes
- Photovoltaic Devices (AREA)
- Testing Of Individual Semiconductor Devices (AREA)
Abstract
The invention discloses a reverse back pressure probe type current-voltage testing device and a method, wherein the device comprises: the device comprises a base platform 1, a test board, a calibration part, a test component fixing part and a test part, wherein the calibration part is used for carrying out light intensity calibration on a standard battery, and the test component fixing part is used for fixing a solar battery to be tested; the test board and the base station 1 are of an integrated structure, and one side of the test board is connected with the side face of the bottom of the base station 1; the test board is provided with the calibration part and the test component fixing part, and the test part is detachably connected with the solar cell to be tested. The reverse backpressure probe type electrode box is provided with six groups of independent probe electrodes, so that the accuracy is high, the test is not influenced mutually, the accuracy of test data is high, and the parallelism is good.
Description
Technical Field
The invention belongs to the field of solar cell current-voltage testing, and particularly relates to a reverse backpressure probe type current-voltage testing device and method.
Background
Solar cells are devices that directly convert light energy into electrical energy through the photovoltaic effect, and are a means to effectively develop and utilize solar energy. The solar cell takes an organic matter with photosensitive property as a semiconductor material, generates voltage to form current due to photovoltaic effect, and realizes the effect of utilizing solar energy to generate electricity. Ideally, the equivalent circuit of the solar cell is composed of a constant current source, a diode connected in parallel, a parallel resistor, a series resistor and a load. The series-parallel resistance of the solar cell is directly reflected on the current-voltage characteristic curve of the device. The photoelectric conversion efficiency of a solar cell is an important parameter for evaluating the quality of the solar cell, and is proportional to the product of the open-circuit voltage, the short-circuit current density and the fill factor. These parameters can all be obtained by current-voltage testing. The prior art test fixture has four test sites corresponding to four battery cells. When each unit is tested, an anode is shared. Therefore, the relative positions of each unit and the anode and the cathode of the probe are different, so that the cell efficiency is attenuated along with the increase of the distance between the probe and the device, and measurement errors are caused; when a certain unit is tested, the test current has influence on other units, and the efficiency of devices of other units is reduced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a reverse back pressure probe type current-voltage testing apparatus, comprising: the device comprises a base platform, a test board, a calibration part, a test component fixing part and a test part, wherein the calibration part is used for carrying out light intensity calibration on a standard battery, and the test component fixing part is used for fixing a solar battery to be tested;
the test board and the base station are of an integrated structure, and one side of the test board is connected with the side face of the bottom of the base station;
the test board is provided with the calibration part and the test component fixing part, and the test part is detachably connected with the solar cell to be tested.
Preferably, the thickness of the test plate is smaller than that of the base.
Preferably, the calibration part comprises a calibration standard battery box and a calibration standard battery dedicated fixing groove, the calibration standard battery box is matched with the calibration standard battery dedicated fixing groove, and a first light hole is formed in the center of the calibration standard battery dedicated fixing groove;
the center position of the standard battery box for calibration is used for installing a standard battery for calibration, and the standard battery for calibration is placed at the first light-transmitting hole.
Preferably, the fixing part of the test component comprises a special fixing groove for the battery to be tested, and a second light hole is formed in the center of the special fixing groove for the battery to be tested;
a plurality of first super-strong magnetic blocks are arranged on two sides of the bottom of the special fixing groove for the battery to be tested, and the first super-strong magnetic blocks are parallel and symmetrical with the second light hole as the center.
Preferably, the base station is provided with an alignment line, and the alignment line comprises a first alignment line, a second alignment line, a third alignment line and a fourth alignment line;
the first alignment line and the second alignment line are aligned with the central point of the first light transmission hole, the third alignment line and the fourth alignment line are aligned with the central point of the second light transmission hole, and the first alignment line and the third alignment line are on the same straight line.
Preferably, the testing part comprises a reverse backpressure probe type electrode box and a photomask plate, and the photomask plate is provided with a plurality of third light holes;
the reverse backpressure probe type electrode box is detachably connected with the special fixing groove for the solar cell to be detected.
Preferably, the reverse back pressure probe type electrode box is provided with a plurality of second super-strong magnetic blocks and a plurality of groups of independent electrodes;
the second super-strong magnetic blocks correspond to the first super-strong magnetic blocks one by one and are matched with the first super-strong magnetic blocks one by one, and the plurality of independent electrodes are detachably connected with the solar cell to be tested;
and a plurality of groups of independent electrodes penetrate through a plurality of third light holes to be contacted with the solar cell to be tested.
Preferably, the device further comprises a handle, and the handle is fixedly connected with the outer side of the top of the base station.
A reverse back pressure probe-type current-voltage test method using the test apparatus of any one of claims 1 to 8, comprising the steps of:
placing a standard battery box for calibration in a standard battery fixing groove for calibration, and calibrating the light intensity of a light source based on a standard battery for calibration in the standard battery box for calibration;
aligning the third alignment line and the fourth alignment line with the light source after the light intensity of the second light hole is calibrated, and fixing the solar cell to be tested on the fixing part of the test component through the test part;
and acquiring the current and the voltage of the solar cell to be tested based on the testing part.
Preferably, before the light intensity calibration of the light source based on the calibration standard cell in the calibration standard cell box, the method further comprises: and aligning the first alignment line and the second alignment line to the light source at the first light-transmitting hole.
The invention has the technical effects that: the invention discloses a reverse backpressure probe type current-voltage testing device and a method, wherein a reverse backpressure probe type electrode box is provided with six groups of independent probe electrodes (each group of electrodes is provided with a positive electrode and a negative electrode), the area of the probe electrodes is small, the probe electrodes are easy to contact with a battery to be tested, and the accuracy is high; the six groups of probe electrodes respectively correspond to six battery units, the relative positions of each battery unit and the probe electrodes are completely the same, the test is not influenced mutually, the accuracy rate of the test data is high, and the parallelism is good.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application. In the drawings:
FIG. 1 is an isometric view of an embodiment of the present invention;
FIG. 2 is a front view of an embodiment of the present invention;
FIG. 3 is a top view of an embodiment of the present invention;
FIG. 4 is a bottom view of a reverse back pressure probe-style electrode cartridge in accordance with an embodiment of the present invention;
fig. 5 is a bottom view of a calibration standard battery according to an embodiment of the present invention;
FIG. 6 is a plan view of a photomask according to an embodiment of the present invention;
FIG. 7 is a graph showing the current-voltage curves of Glass/ITO/PEDOT: PSS/PM6: BO-4Cl/PDIN/Ag organic solar cells according to the examples of the present invention.
The electrode box comprises a base platform 1, a standard battery box for calibration 2, a special fixing groove for a standard battery for calibration 3, a reverse back pressure probe type electrode box 4, a special fixing groove for a battery to be tested 5, a photomask plate 6, a handle 7, a standard battery for calibration B2, an independent electrode E6, a second super-strong magnetic block M4, a first super-strong magnetic block M5, a first light hole 31, a second light hole 51, a third light hole 06, an alignment line I L311, an alignment line II L312, an alignment line III L511 and an alignment line IV L512.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
It should be noted that the steps illustrated in the flowcharts of the figures may be performed in a computer system such as a set of computer-executable instructions and that, although a logical order is illustrated in the flowcharts, in some cases, the steps illustrated or described may be performed in an order different than presented herein.
Example one
As shown in fig. 1 to 6, the present embodiment provides a reverse back pressure probe type current-voltage testing apparatus, which includes a base platform 1, a calibration standard battery 2, a calibration standard battery dedicated fixing groove 3, a reverse back pressure probe type electrode box 4, a battery dedicated fixing groove 5, a photomask plate 6, and a handle 7.
The calibration standard battery case 2 has a calibration standard battery B2 at a test center position.
The reverse back pressure probe electrode cassette 4 has six sets of electrodes E6.
Eight super-strong magnetic blocks M4 of the reverse back pressure probe type electrode box 4.
The fixing groove 5 for the battery to be tested is provided with a light hole 51, and the light source is suitable for irradiating the battery to be tested through the light hole 51 from bottom to top.
Eight super-strong magnetic blocks M5 of the special fixing groove 5 for the battery to be tested.
The photomask plate 6 has six light holes 06, and is mainly used for calibrating the effective area of the battery device to be tested.
And the six groups of independent electrodes E6 penetrate through the six light holes 06 to be contacted with the solar cell to be tested.
The handle 7 is convenient for moving the reverse back pressure type current-voltage test sample table.
The center of the special fixing groove 3 for the standard calibration battery is provided with a light hole 31, and the special fixing groove is suitable for a light source to penetrate through the light hole 31 from bottom to top to irradiate the standard calibration battery B2.
Two alignment lines are attached around the center point of the light hole 51 of the special fixing groove 5 for the battery to be tested near the main body of the base station 1, and the alignment line three L511 and the alignment line four L512 are used for assisting the center of the light hole 51 to align with the light source.
Two alignment lines are attached around the center point of the light transmission hole 31 of the fixing groove 3 dedicated for the calibration standard battery near the main body of the base platform 1, and the first alignment line L311 and the second alignment line L312 are used for assisting the center of the light transmission hole 31 to align with the light source.
The light transmission holes 31 and 51 are rectangular.
The first alignment line L311, the second alignment line L312, the third alignment line L511, and the fourth alignment line L512 are black bold lines disposed on the base platform 1, the first alignment line L311 and the second alignment line L312 are aligned with a center point of the first light transmission hole 31, and the third alignment line L511 and the fourth alignment line L512 are aligned with a center point of the second light transmission hole 51. Eight super-strong magnetic blocks M4 on the reverse backpressure probe type electrode box 4 correspond to eight super-strong magnetic blocks M5 of the special fixing groove 5 for the battery to be tested one by one, and the magnetic blocks M4 and the special fixing groove 5 for the reverse backpressure probe type electrode box 4 and the battery to be tested can be quickly and accurately positioned with each other,
The alignment line one L311 and the alignment line three L511 are on the same straight line.
Example two
According to a reverse back pressure probe type current-voltage testing apparatus, the present embodiment provides a reverse back pressure probe type current-voltage testing method, including the following steps:
step one, the sunlight simulator irradiates the bottom of a standard battery fixing groove 3 for calibration of a sample table, the sample table is moved through a handle 7, a first alignment line L311 and a second alignment line L312 of a base table are aligned to the middle point of the side length of a light source in a prescription shape of a light transmission hole 31, the light intensity of the standard battery is calibrated by aligning the light source of the sunlight simulator to the center of the light transmission hole 31, and the calibration value is automatically calibrated into standard sunlight through a computer terminal.
And step two, placing the standard battery for calibration in the standard battery fixing groove 3 for calibration.
And step three, irradiating the bottom of the special fixing groove 5 for the battery to be tested of the sample table by the sunlight simulator, moving the sample table through the handle 7, aligning the third alignment line L511 and the fourth alignment line L512 of the base table to the middle point of the side length of the light source in the prescription shape of the light hole 51, and aligning the light source of the sunlight simulator to the center of the light hole 51.
And step four, placing the polymer organic solar cell at the light holes 51 of the special fixing groove 5 for the cell to be tested, placing a photomask plate with the test surface facing upwards.
And fifthly, positioning and fixing the electrode box 4 of the reverse back pressure probe, the solar cell to be tested and eight super-strong magnetic blocks M5 in the special fixing groove 5 for the solar cell to be tested.
And step six, acquiring data such as current-voltage and the like of the solar cell to be detected through six groups of electrodes E6 in the reverse back pressure probe electrode box 4, transmitting the acquired data such as the current-voltage and the like to a computer terminal, and displaying the data such as the current-voltage and the like and the current-voltage on the computer terminal.
The invention is utilized to test the current-voltage curve of the Glass/ITO/PEDOT, PSS/PM6, BO-4Cl/PDIN/Ag solar cell. The test result chart is shown in FIG. 6 and Table 1, and Table 1 shows the current-voltage curve results of the organic solar cell of Glass/ITO/PEDOT: PSS/PM6: BO-4 Cl/PDIN/Ag.
TABLE 1
The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A reverse back pressure probe-type current-voltage test apparatus, comprising: the device comprises a base platform (1), a test board, a calibration part, a test component fixing part and a test part, wherein the calibration part is used for carrying out light intensity calibration on a standard battery, and the test component fixing part is used for fixing a solar battery to be tested;
the test board and the base platform (1) are of an integrated structure, and one side of the test board is connected with the side face of the bottom of the base platform (1);
the test board is provided with the calibration part and the test component fixing part, and the test part is detachably connected with the solar cell to be tested.
2. The reverse back pressure probe type current-voltage test apparatus according to claim 1, wherein the thickness of the test board is smaller than that of the base (1).
3. The reverse back pressure probe type current-voltage testing device according to claim 1, wherein the calibration part comprises a calibration standard battery box (2) and a calibration standard battery dedicated fixing groove (3), the calibration standard battery box (2) and the calibration standard battery dedicated fixing groove (3) are fitted, and a first light hole (31) is formed at the center of the calibration standard battery dedicated fixing groove (3);
the center position of the standard battery box (2) for calibration is used for installing a standard battery (B2) for calibration, and the standard battery (B2) for calibration is placed at the first light-transmitting hole (31).
4. The reverse backpressure probe type current-voltage test device of claim 1, wherein the test component fixing part comprises a fixing groove (5) special for the battery to be tested, and a second light hole (51) is arranged at the center of the fixing groove (5) special for the battery to be tested;
a plurality of first super-strong magnetic blocks (M5) are arranged on two sides of the bottom of the special fixing groove (5) for the battery to be tested, and the first super-strong magnetic blocks are parallel and symmetrical with the second light hole (51) as the center.
5. The reverse back pressure probe type current-voltage testing apparatus according to claim 1, wherein the base table (1) is provided with alignment lines, the alignment lines including an alignment line one (L311), an alignment line two (L312), an alignment line three (L511) and an alignment line four (L512);
the first alignment line (L311) and the second alignment line (L312) are aligned with the center point of the first light-transmitting hole (31), the third alignment line (L511) and the fourth alignment line (L512) are aligned with the center point of the second light-transmitting hole (51), and the first alignment line (L311) and the third alignment line (L511) are on the same straight line.
6. The reverse back pressure probe type current-voltage testing device according to claim 1, wherein the testing portion comprises a reverse back pressure probe type electrode box (4) and an optical mask plate (6), the optical mask plate (6) is provided with a plurality of third light transmission holes (06);
the reverse backpressure probe type electrode box (4) is detachably connected with the special fixing groove (5) for the solar cell to be detected.
7. The reverse back pressure probe type current-voltage testing device as claimed in claim 6, wherein the reverse back pressure probe type electrode box is provided with a plurality of second super-strong magnetic blocks (M4) and a plurality of groups of independent electrodes (E6);
the second super-strong magnetic blocks (M4) correspond to the first super-strong magnetic blocks (M5) one by one and are matched with the first super-strong magnetic blocks one by one, and the plurality of independent electrodes (E6) are detachably connected with the solar cell to be tested.
8. The reverse back pressure probe type current-voltage testing device according to claim 1, further comprising a handle (7), wherein the handle (7) is fixedly connected with the outer side of the top of the base station (1).
9. A reverse back pressure probe current-voltage test method, using the test apparatus of any one of claims 1 to 8, comprising the steps of:
placing a standard battery box (2) for calibration in a standard battery fixing groove (3) for calibration, and performing light intensity calibration on a light source based on a standard battery (B2) for calibration in the standard battery box (2) for calibration;
aligning a third alignment line (L511) and a fourth alignment line (L512) to the light source after the light intensity of the second light transmission hole (51) is calibrated, and fixing the solar cell to be tested on the test component fixing part through the test part;
and acquiring the current and the voltage of the solar cell to be tested based on the testing part.
10. The reverse back pressure probe-type current-voltage test method according to claim 9, wherein before calibrating the light intensity of the light source based on the calibration standard cell (B2) in the calibration standard cell box (4), further comprising: aligning the first alignment line (L311) and the second alignment line (L312) to the light source at the first light-transmitting hole (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706776.6A CN115940812A (en) | 2022-12-29 | 2022-12-29 | Reverse backpressure probe type current-voltage testing device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211706776.6A CN115940812A (en) | 2022-12-29 | 2022-12-29 | Reverse backpressure probe type current-voltage testing device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115940812A true CN115940812A (en) | 2023-04-07 |
Family
ID=86552200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211706776.6A Pending CN115940812A (en) | 2022-12-29 | 2022-12-29 | Reverse backpressure probe type current-voltage testing device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115940812A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063996A (en) * | 2012-12-14 | 2013-04-24 | 浙江晶科能源有限公司 | Testing device of back-contacted solar cell piece |
| US20180309404A1 (en) * | 2017-04-24 | 2018-10-25 | Angstrom Designs, Inc. | Apparatus and Method for Testing Performance of Multi-Junction Solar Cells |
| CN208158547U (en) * | 2018-05-29 | 2018-11-27 | 湘潭大学 | Device for organic solar batteries performance test |
| CN208445529U (en) * | 2018-07-27 | 2019-01-29 | 东泰高科装备科技（北京）有限公司 | A kind of solar cell test fixture and characteristic of solar cell test device |
| CN114204906A (en) * | 2021-12-03 | 2022-03-18 | 西南大学 | Solar cell current-voltage characteristic test fixture |
| CN216560916U (en) * | 2021-11-15 | 2022-05-17 | 天津宇杰科技有限公司 | Solar cell test fixture |
-
2022
- 2022-12-29 CN CN202211706776.6A patent/CN115940812A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103063996A (en) * | 2012-12-14 | 2013-04-24 | 浙江晶科能源有限公司 | Testing device of back-contacted solar cell piece |
| US20180309404A1 (en) * | 2017-04-24 | 2018-10-25 | Angstrom Designs, Inc. | Apparatus and Method for Testing Performance of Multi-Junction Solar Cells |
| CN208158547U (en) * | 2018-05-29 | 2018-11-27 | 湘潭大学 | Device for organic solar batteries performance test |
| CN208445529U (en) * | 2018-07-27 | 2019-01-29 | 东泰高科装备科技（北京）有限公司 | A kind of solar cell test fixture and characteristic of solar cell test device |
| CN216560916U (en) * | 2021-11-15 | 2022-05-17 | 天津宇杰科技有限公司 | Solar cell test fixture |
| CN114204906A (en) * | 2021-12-03 | 2022-03-18 | 西南大学 | Solar cell current-voltage characteristic test fixture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE545036T1 (en) | TEST EQUIPMENT FOR AUTOMATED QUALITY CONTROL OF THIN FILM SOALR MODULES | |
| Vorasayan et al. | Limited laser beam induced current measurements: a tool for analysing integrated photovoltaic modules | |
| JP2011159726A (en) | Method of manufacturing solar cell module | |
| JP2010238906A (en) | Device and method of measuring output characteristics of solar cell | |
| JP2004241449A (en) | Apparatus and method for evaluating performance of solar battery | |
| JP2011155225A (en) | Solar cell evaluation device and solar cell evaluation method | |
| KR20100009280A (en) | Testing apparatus for solar cell | |
| EP3989436B1 (en) | Testing method for testing currents of subcells of multi-junction tandem photovoltaic cell and degree of matching between currents | |
| CN115940812A (en) | Reverse backpressure probe type current-voltage testing device and method | |
| JP5579829B2 (en) | Electrical and optoelectric properties of large area semiconductor devices. | |
| KR20150045871A (en) | Test device for solar cell performance | |
| US20130021051A1 (en) | Apparatus and method for contacting a solar cell | |
| WO2011024750A1 (en) | Method and device for evaluating solar cells | |
| KR101104338B1 (en) | Apparatus of evaluating solar cell and method of evaluating solar cell using the same | |
| CN205792459U (en) | For testing the IV tester of heterojunction solar battery | |
| JP4139890B2 (en) | Method for evaluating characteristics of solar cells | |
| JP2013131668A (en) | Measurement jig | |
| KR101447919B1 (en) | Solar cell module comprising test cell, solar cell module testing apparatus and testing method using the same | |
| CN109753678B (en) | Method for calibrating volt-ampere characteristic curve of solar cell | |
| KR20120002885A (en) | System for inspecting thin film solar cell and method of inspecting thin film solar cell using the same | |
| CN112367050A (en) | Electrical performance testing method suitable for large-size solar cell | |
| JP2005303085A (en) | Method for measuring characteristic of solar cell and instrument for measuring them | |
| CN219285379U (en) | Line sequence calibration tool for OCV (optical clear video) test equipment of battery cell | |
| CN216646720U (en) | Thin film photoelectric device measuring device | |
| CN201917324U (en) | Nondestructive measuring device for current-limiting aperture of vertical-cavity surface-emitting laser |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20230407 |
|
| RJ01 | Rejection of invention patent application after publication |