CN103698907B - A kind of method of foreign matter in extract crystal panel - Google Patents
A kind of method of foreign matter in extract crystal panel Download PDFInfo
- Publication number
- CN103698907B CN103698907B CN201310426599.0A CN201310426599A CN103698907B CN 103698907 B CN103698907 B CN 103698907B CN 201310426599 A CN201310426599 A CN 201310426599A CN 103698907 B CN103698907 B CN 103698907B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- foreign matter
- crystal panel
- extract
- closed container
- 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.)
- Expired - Fee Related
Links
Landscapes
- Liquid Crystal (AREA)
Abstract
The invention discloses the method for foreign matter in a kind of extract crystal panel, relate to display technique field, for solving foreign matter sampling difficulty in liquid crystal panel, sampling inaccurate problem and invent.The method of foreign matter in described extract crystal panel, comprising: to determine in liquid crystal panel going forward side by side row labels in the position of foreign matter; Liquid crystal panel is cooled, liquid crystal molecule viscosity is increased; Described foreign matter is extracted.The present invention is used for the foreign matter in extract crystal panel, and analyzes it, for reducing the bad of the liquid crystal panel that causes due to foreign matter.
Description
Technical field
The present invention relates to display technique field, particularly relate to the method for foreign matter in a kind of extract crystal panel.
Background technology
Usual liquid crystal panel comprises the two pieces of substrates be oppositely arranged and the liquid crystal layer be positioned in the middle of two pieces of substrates, and completes the sealing of liquid crystal panel by sealed plastic box.Liquid crystal panel can exist various bad, and wherein, there is foreign matter in liquid crystal panel is the key factor causing liquid crystal panel bad.
Entering in liquid crystal panel to reduce foreign matter, reducing the probability that liquid crystal panel is bad, needing, to the foreign body existed in liquid crystal panel, to analyze accordingly, thus draw the source of foreign matter, to take to reduce the measure that foreign matter enters liquid crystal panel.
But because the liquid crystal in liquid crystal panel is in a liquid state, foreign matter also can move during liquid crystal flowing, cause the difficulty extracting foreign matter larger.
Summary of the invention
The embodiment provides the method for foreign matter in a kind of extract crystal panel, for solving the problem that in liquid crystal panel, foreign matter sampling difficulty, sampling are forbidden.
For achieving the above object, embodiments of the invention adopt following technical scheme:
A method for foreign matter in extract crystal panel, comprising: to determine in liquid crystal panel going forward side by side row labels in the position of foreign matter; Liquid crystal panel is cooled, liquid crystal molecule viscosity is increased; Described foreign matter is extracted.
Described described foreign matter to be extracted, comprising: upper and lower two pieces of substrates are split; Substrate containing foreign matter is heated, liquid crystal molecule is volatilized completely; Extract foreign matter.
Described the substrate containing foreign matter to be heated, liquid crystal molecule is volatilized completely, comprising: the substrate containing foreign matter is put into closed container, little by little raise the temperature in closed container, and described closed container is vacuumized lentamente, liquid crystal molecule is volatilized completely.
Described by liquid crystal panel cooling, comprising: spray at liquid crystal panel surface the material that room temperature can produce low temperature.
The material that described room temperature can produce low temperature is liquid nitrogen or dry ice.
Described by liquid crystal panel cooling, comprising: liquid crystal panel is placed in low temperature environment and cools.
The temperature of described low temperature environment is-90 DEG C ~-30 DEG C.
Described described foreign matter to be extracted, comprise the following steps: the region containing described foreign matter is cut down from described liquid crystal panel; The part cut down is cleared up; By the described part heating cut down, liquid crystal molecule is volatilized completely; Foreign matter is extracted.
Described by the described part heating cut down, liquid crystal molecule is volatilized completely, comprising: the described part cut down is put into closed container, little by little raise the temperature in closed container, and described closed container is vacuumized lentamente, liquid crystal molecule is volatilized completely.
In described closed container, temperature is 25 DEG C ~ 75.
The described part to cutting down is cleared up, and comprising: wiping is carried out on the surface of the described part cut down; Whether the liquid crystal observing the cut edge of the part cut down described in being in is stained with chip; If the liquid crystal of cut edge is stained with chip, then the part by cutting down described in extruding, makes the liquid crystal of cut edge overflow, thus is removed by described chip.
Describedly determine that the row labels of going forward side by side of the position of foreign matter in liquid crystal panel comprises: all mark at the upper surface of described liquid crystal panel and lower surface.
Embodiments provide the method for foreign matter in a kind of extract crystal panel, first described method marks the foreign matter in liquid crystal panel, then the temperature by reducing liquid crystal panel reduces the mobility of liquid crystal, thus the mobility of foreign matter in liquid crystal in reduction liquid crystal panel, the scope of activities of foreign matter can be reduced like this, and then liquid crystal is separated with foreign matter, reach the object of accurately being taken out by foreign matter.Described method is simple, easy to operate, utilizes physical method just foreign matter can be taken out exactly, carries out source analysis, can reduce the generation of liquid crystal panel fraction defective preferably to the foreign matter taken out.
Embodiment
Be clearly and completely described below in conjunction with the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
Below the embodiment of the present invention is described in detail.
Embodiments provide the method for foreign matter in a kind of extract crystal panel, described method comprises: to determine in liquid crystal panel going forward side by side row labels in the position of foreign matter; Liquid crystal panel is cooled, liquid crystal molecule viscosity is increased; Described foreign matter is extracted.
Embodiments provide the method for foreign matter in a kind of extract crystal panel, first described method marks the foreign matter in liquid crystal panel, then the temperature by reducing liquid crystal panel reduces the mobility of liquid crystal, thus the mobility of foreign matter in liquid crystal in reduction liquid crystal panel, the scope of activities of foreign matter can be reduced like this, and then liquid crystal is separated with foreign matter, reach the object of accurately being taken out by foreign matter.Described method is simple, easy to operate, utilizes physical method just foreign matter can be taken out exactly, carries out source analysis, can reduce the generation of liquid crystal panel fraction defective preferably to the foreign matter taken out.
Wherein, describedly determine that the row labels of going forward side by side of the position of foreign matter in liquid crystal panel comprises: the upper surface of liquid crystal panel and lower surface are all marked.Because liquid crystal molecule is fixed on up and down between two pieces of substrates of liquid crystal panel by sealed plastic box, upper and lower like this two pieces of substrates all with foreign matter, all may make marks to upper and lower two pieces of substrates, can mark better like this to the foreign matter existed in liquid crystal panel.
In the present embodiment, described by liquid crystal panel cooling, comprising: the material that can produce low temperature under liquid crystal panel surface sprays room temperature.By the material of low temperature can be produced under the surface sprinkling room temperature of liquid crystal panel, liquid crystal panel can be made promptly to be lowered the temperature, thus the viscosity of the liquid crystal molecule in liquid crystal panel is increased, so just can reduce the mobility of liquid crystal molecule, and then reduce the scope of activities of foreign matter in liquid crystal molecule, realize liquid crystal and reach with foreign matter the object be separated.
Wherein, the material that can produce low temperature under described room temperature is at room temperature absorb temperature by morphologic change thus realize the material of cooling effect, as liquid nitrogen, dry ice.In the present embodiment, preferably use liquid nitrogen.Due in the industrial production, liquid nitrogen can be used as deep refrigerating agent, because of its chemical inertness, can directly contact with biological tissue, rapidly freezing but do not destroy biologically active.In addition, liquid nitrogen obtains by pressurized air, wide material sources, also can reduce costs preferably.Be understandable that, in reality becomes to produce, everyly at room temperature realize by morphologic change the liquid or solid etc. that temperature reduces and all can be used as the material that can produce low temperature in the embodiment of the present invention and use.
In another embodiment of the present invention, described by liquid crystal panel cooling, comprising: liquid crystal panel is placed in low temperature environment and cools.For the liquid crystal panel of purity requirements harshness, also liquid crystal panel can be carried out isolated cooling by being placed in low temperature environment.Being placed in the clean vessel that can carry out cold and hot exchange by liquid crystal panel, realizing the cooling of liquid crystal panel in low temperature environment by carrying out cold and hot exchange with the external world.Liquid crystal panel is placed in vessel and carries out isolated cooling, the material can avoiding producing low temperature such as liquid nitrogen to cause the problem of secondary pollution to liquid crystal panel.
Wherein, the temperature cooled in described low temperature environment is-90 DEG C ~-30 DEG C.Be placed on by the vessel holding liquid crystal panel in the described low temperature environment of-90 DEG C ~-30 DEG C, liquid crystal panel can be made to be lowered the temperature, the viscosity of the liquid crystal molecule in liquid crystal panel is increased, in liquid crystal molecule, the mobility of foreign matter reduces.Described low temperature environment can produce the material of low temperature by spraying, as liquid nitrogen, dry ice realize.In the present embodiment, preferably liquid nitrogen is used.The temperature cooled in described low temperature environment is preferably-50 DEG C.At this temperature, both can meet the needs to liquid crystal panel cooling in vessel, and farthest can ensure that again the foreign matter existed in liquid crystal panel was not damaged.
Above-mentioned two embodiments are the two kinds of methods cooled by liquid crystal panel, the material of low temperature can be produced under directly spraying room temperature by the surface at liquid crystal panel and liquid crystal panel is placed in low temperature environment cools the cooling that these two kinds of methods realize liquid crystal panel, thus reduce the mobility of liquid crystal, reduce the mobility of foreign matter in liquid crystal in liquid crystal panel, and then realize being separated of liquid crystal and foreign matter, reach the object of accurately being taken out by foreign matter.Be understandable that, the cooling means for liquid crystal panel is not limited to the method that above-mentioned two embodiments provide, and those skilled in the art also can select aborning according to actual needs.
In the described embodiment that described foreign matter is extracted provided by the invention, comprising: upper and lower two pieces of substrates are split; Substrate containing foreign matter is heated, liquid crystal molecule is volatilized completely; Foreign matter is extracted.
For undersized liquid crystal panel, due to the size of foreign matter and the difference in size of described undersized liquid crystal panel less, so when extracting foreign matter from undersized liquid crystal panel, the position of foreign matter first can be marked in liquid crystal panel, then it is cooled, by being split by two pieces of substrates up and down of liquid crystal panel, thus obtain the substrate containing foreign matter.Utilizing the method for heat temperature raising, can making to be heated to volatilizing completely containing the liquid crystal molecule in the substrate of foreign matter, reach the object extracted by foreign matter.
Wherein, described the substrate containing foreign matter to be heated, liquid crystal molecule is volatilized completely, comprise: the substrate containing foreign matter is put into closed container, little by little raise the temperature in closed container, and described closed container is vacuumized lentamente, finally make liquid crystal molecule volatilize completely.Wherein, described closed container can be baking oven, for heating.
For undersized liquid crystal panel, the substrate containing foreign matter after fractionation directly can be put into baking oven heating makes liquid crystal be volatilized, due to the character of the foreign matter adulterated in liquid crystal molecule still can not be specified, so preferably adopt the method for heating in vacuum to heat the substrate containing foreign matter in the present embodiment, on the one hand, under the environment of vacuum, do not need too high temperature that liquid crystal can be made to be heated volatilization completely, on the other hand, under the environment of vacuum, by vacuumizing slowly, intensification gradually, the loss of the foreign matter that also can prevent liquid crystal molecule from occurring because being heated bumping.
In described another embodiment that described foreign matter is extracted provided by the invention, comprise the following steps: the region containing described foreign matter is cut down from described liquid crystal panel; The part cut down is cleared up; By the described part heating cut down, liquid crystal molecule is volatilized completely; Foreign matter is extracted.
For large-sized liquid crystal panel, in order to foreign matter accurately being located, the method by the region containing described foreign matter cuts down from described liquid crystal panel is selected to process, wherein, the method of cutting can be selected, with glass cutter cutting, other method also can be selected to process.For the liquid crystal panel after cutting process, if surrounding also has other chips, also need to clear up it, to avoid causing interference to filth test step subsequently.The part cut down can be heated afterwards, thus reach liquid crystal molecule volatilization, realize the object extracted by foreign matter.
Wherein, described by the described part heating cut down, liquid crystal molecule is volatilized completely, comprise: the described part cut down is put into closed container, little by little raise the temperature in closed container, and described closed container is vacuumized lentamente, finally make liquid crystal molecule volatilize completely.Wherein, described closed container can be baking oven, for heating.
In like manner, due to the character of the foreign matter adulterated in liquid crystal molecule still can not be specified, so still preferably adopt the method for heating in vacuum to heat the substrate containing foreign matter in the present embodiment, on the one hand, under the environment of vacuum, do not need too high temperature that liquid crystal can be made to be heated volatilization completely, on the other hand, under the environment of vacuum, intensification by vacuumizing slowly, gradually, the loss of the foreign matter that also can prevent liquid crystal molecule from occurring because being heated bumping.For the described part cut down, actual for cut down still with the part of upper and lower two pieces of substrates, because sealed plastic box is removed when cutting, liquid crystal molecule after heating is volatilized by the periphery gap of the part cut down, until volatilization completely, between two pieces of substrates only remaining foreign matter.
Wherein, the temperature-controllable of baking oven, built in 25 DEG C ~ 75 DEG C, makes liquid crystal can volatilize completely, realizes and being really separated of foreign matter.In addition, heat under vacuum conditions, liquid crystal can be shortened and be heated time of volatilization, not only can save the energy in actual production, foreign matter can also be made to be protected in larger degree, for the precision of foreign matter in detecting step subsequently provides guarantee.
In the present embodiment, the described part to cutting down is cleared up, and comprising: by clean for the surface wipes of the described part cut down; Whether the liquid crystal observing the cut edge of the part cut down described in being in is stained with chip; If the liquid crystal of cut edge is stained with chip, then the part by cutting down described in extruding, makes the liquid crystal of cut edge overflow, thus is removed by described chip.
Due to when cutting, inevitably there is chip at the part of its periphery cut down, this just needs to clear up it.By the part cut down described in extruding, the liquid crystal of cut edge is overflowed, thus described chip is removed, to avoid causing interference to filth test step subsequently.
Above-mentioned two embodiments are the two kinds of methods extracted by described foreign matter, by above-mentioned two kinds of methods, in the step that large scale liquid crystal panel and small size liquid crystal panel are extracted at foreign matter, accurately locating foreign matter, liquid crystal be heated volatilization two in be all met, increase the usable range of this method foreign matter in extract crystal panel, widen the range of application of this method in various liquid crystal panel.
Certainly, in another embodiment of the present invention, foreign matter in liquid crystal panel to be marked and after liquid crystal panel is lowered the temperature, if when the viscosity of liquid crystal molecule is enough large, the mobility of foreign matter in liquid crystal molecule is enough weak, can not by the method for above-mentioned heating volatilization liquid crystal, but can take by probe or other accurately extraction equipment directly to the method that foreign matter wherein extracts, to reach the object that liquid crystal molecule is separated with foreign matter.
The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection domain of claim.
Claims (10)
1. the method for foreign matter in extract crystal panel, is characterized in that, comprising:
To determine in liquid crystal panel going forward side by side row labels in the position of foreign matter;
Liquid crystal panel is cooled, liquid crystal molecule viscosity is increased;
Described foreign matter is extracted;
Wherein, described foreign matter extraction is comprised:
Two pieces of substrates up and down of liquid crystal panel are split; Substrate containing foreign matter is heated, liquid crystal molecule is volatilized completely; Extract described foreign matter; Or
Region containing described foreign matter is cut down from described liquid crystal panel; The part cut down is cleared up; By the described part heating cut down, liquid crystal molecule is volatilized completely; Extract described foreign matter.
2. the method for foreign matter in extract crystal panel according to claim 1, is characterized in that, is describedly heated by the substrate containing foreign matter, liquid crystal molecule is volatilized completely, comprising:
Substrate containing foreign matter is put into closed container, little by little raises the temperature in closed container, and described closed container is vacuumized lentamente, liquid crystal molecule is volatilized completely.
3. the method for foreign matter in extract crystal panel according to claim 1, is characterized in that, is describedly cooled by liquid crystal panel, comprising:
The material of low temperature can be produced under liquid crystal panel surface sprays room temperature.
4. the method for foreign matter in extract crystal panel according to claim 3, it is characterized in that, the material that can produce low temperature under described room temperature is liquid nitrogen or dry ice.
5. the method for foreign matter in extract crystal panel according to claim 1, is characterized in that, is describedly cooled by liquid crystal panel, comprising:
Liquid crystal panel is placed in low temperature environment and cools.
6. the method for foreign matter in extract crystal panel according to claim 5, it is characterized in that, the temperature of described low temperature environment is-90 DEG C ~-30 DEG C.
7. the method for foreign matter in extract crystal panel according to claim 1, is characterized in that, described by the described part heating cut down, and liquid crystal molecule is volatilized completely, comprising:
The described part cut down is put into closed container, little by little raises the temperature in closed container, and described closed container is vacuumized lentamente, liquid crystal molecule is volatilized completely.
8. the method for foreign matter in extract crystal panel according to claim 7, it is characterized in that, in described closed container, temperature is 25 DEG C ~ 75 DEG C.
9. the method for foreign matter in extract crystal panel according to claim 1, it is characterized in that, the described part to cutting down is cleared up, and comprising:
Wiping is carried out on the surface of the described part cut down;
Whether the liquid crystal observing the cut edge of the part cut down described in being in is stained with chip;
If the liquid crystal of cut edge is stained with chip, then the part by cutting down described in extruding, makes the liquid crystal of cut edge overflow, thus is removed by described chip.
10. the method for foreign matter in extract crystal panel according to claim 1, is characterized in that, describedly to determine in liquid crystal panel that the position of foreign matter row labels of going forward side by side comprises:
All mark at the upper surface of described liquid crystal panel and lower surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426599.0A CN103698907B (en) | 2013-09-18 | 2013-09-18 | A kind of method of foreign matter in extract crystal panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310426599.0A CN103698907B (en) | 2013-09-18 | 2013-09-18 | A kind of method of foreign matter in extract crystal panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103698907A CN103698907A (en) | 2014-04-02 |
| CN103698907B true CN103698907B (en) | 2016-04-06 |
Family
ID=50360491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310426599.0A Expired - Fee Related CN103698907B (en) | 2013-09-18 | 2013-09-18 | A kind of method of foreign matter in extract crystal panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103698907B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105651542B (en) * | 2015-12-29 | 2020-04-17 | 芜湖东旭光电科技有限公司 | Glass substrate sampling device and method |
| CN105607327B (en) * | 2016-03-25 | 2018-10-26 | 京东方科技集团股份有限公司 | The production method of liquid crystal display device |
| CN108287086B (en) * | 2017-11-23 | 2020-10-27 | 彩虹显示器件股份有限公司 | Sampling method for micron-sized particles of flat glass plate |
| CN108645793B (en) * | 2018-05-11 | 2021-10-15 | 武汉华星光电半导体显示技术有限公司 | Sample analysis module, sample analysis device, and sample analysis method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09145643A (en) * | 1995-11-24 | 1997-06-06 | Hitachi Ltd | Analysis of impurity element distributed in thin-film layer constituting liquid crystal panel and liquid crystal panel constituted by using thin-film layer, wherein the amount of impurity element is confirmed to be less than specified value by analysis thereof |
| CN1567076A (en) * | 2003-06-20 | 2005-01-19 | 友达光电股份有限公司 | Process for restoring LCD containing foreign matter |
| KR20050033223A (en) * | 2003-10-06 | 2005-04-12 | 엘지.필립스 엘시디 주식회사 | Fabricating method of liquid crystal display device |
| CN1844975A (en) * | 2006-04-28 | 2006-10-11 | 友达光电股份有限公司 | Liquid crystal ion density measuring method |
| JP2006300892A (en) * | 2005-04-25 | 2006-11-02 | Dainippon Printing Co Ltd | Method and apparatus for inspecting foreign matter in color filter forming substrate |
| CN202735309U (en) * | 2012-08-30 | 2013-02-13 | 京东方科技集团股份有限公司 | Foreign matter detector and display panel processing unit |
-
2013
- 2013-09-18 CN CN201310426599.0A patent/CN103698907B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09145643A (en) * | 1995-11-24 | 1997-06-06 | Hitachi Ltd | Analysis of impurity element distributed in thin-film layer constituting liquid crystal panel and liquid crystal panel constituted by using thin-film layer, wherein the amount of impurity element is confirmed to be less than specified value by analysis thereof |
| CN1567076A (en) * | 2003-06-20 | 2005-01-19 | 友达光电股份有限公司 | Process for restoring LCD containing foreign matter |
| KR20050033223A (en) * | 2003-10-06 | 2005-04-12 | 엘지.필립스 엘시디 주식회사 | Fabricating method of liquid crystal display device |
| JP2006300892A (en) * | 2005-04-25 | 2006-11-02 | Dainippon Printing Co Ltd | Method and apparatus for inspecting foreign matter in color filter forming substrate |
| CN1844975A (en) * | 2006-04-28 | 2006-10-11 | 友达光电股份有限公司 | Liquid crystal ion density measuring method |
| CN202735309U (en) * | 2012-08-30 | 2013-02-13 | 京东方科技集团股份有限公司 | Foreign matter detector and display panel processing unit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103698907A (en) | 2014-04-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103698907B (en) | A kind of method of foreign matter in extract crystal panel | |
| CN109870405A (en) | A kind of ice addisive strength measuring device and measuring method | |
| DE602008000086D1 (en) | Method for attaching a sample to a manipulator | |
| CN106541310A (en) | The cutting method of display floater | |
| WO2014005690A1 (en) | Substrate unit, preservation device and method for the cryopreservation of a biological sample | |
| CN104991623B (en) | A kind of server master board liquid cooling system | |
| JPWO2009145008A1 (en) | Laser processing apparatus and laser processing method | |
| US10307799B2 (en) | Apparatus for dismantling and cleaning a display panel | |
| CN205301012U (en) | Atmosphere steam initiative collection device | |
| CN103662420A (en) | Biotech drug storage device | |
| CN101130216A (en) | Laser cutting method | |
| CN104970003A (en) | Cell droplet rapid vitrification freeze-thawing carrier and method | |
| CN102589950B (en) | Preparation technology of sample of scanning electron microscope for observing crack growth path | |
| CN106018018A (en) | Novel TEM sample preparation method for analyzing lattice imperfection in failure analysis | |
| CN105244314A (en) | Display device and preparation method thereof | |
| CN103706957B (en) | Thermoelectric refrigerating device and laser processing method using same | |
| CN202773904U (en) | Biological material vitrification freezing carrier | |
| CN204666947U (en) | Microscope ice crystal cold bench | |
| CN103586587A (en) | Laser cutting method of silicon wafers | |
| CN100559613C (en) | Have silicon solar cell of hot spot laser etching ring and preparation method thereof | |
| CN107868250A (en) | The method for preparing dimethicone | |
| CN104742551A (en) | An organic material transfer printing method in an organic light-emitting display | |
| CN219153089U (en) | Equidistant cutting equipment for self-adhesive labels | |
| CN220977230U (en) | Seed crystal lateral growth sample stage | |
| CN202849062U (en) | Water-sealed floating plate for preventing carbon disulfide from leaking |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160406 Termination date: 20200918 |