CN109375801B - Laminating method of touch screen - Google Patents
Laminating method of touch screen Download PDFInfo
- Publication number
- CN109375801B CN109375801B CN201811130827.9A CN201811130827A CN109375801B CN 109375801 B CN109375801 B CN 109375801B CN 201811130827 A CN201811130827 A CN 201811130827A CN 109375801 B CN109375801 B CN 109375801B
- Authority
- CN
- China
- Prior art keywords
- touch screen
- screen
- parts
- defoaming
- vacuum defoaming
- 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
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
- G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
Abstract
The invention discloses a method for attaching a touch screen, which mainly comprises the following steps: the method comprises the following steps of cleaning a TFT screen and a TP screen → manually aligning and laminating the TFT screen and the TP screen → pre-laminating → vacuum defoaming → passing through a transition film → packaging and warehousing by adopting OCA solid glue, wherein the OCA solid glue comprises a first release film layer, an adhesive layer and a second release film layer which are sequentially arranged from top to bottom, and the adhesive layer mainly comprises the following components in parts by weight: 80-100 parts of acrylate adhesive, 1-3 parts of isocyanate, 2-4 parts of dioctyl phthalate, 6-8 parts of crosslinking curing agent and 5-8 parts of rheological additive. The rheological additive is added into the OCA solid adhesive used in the invention, so that the thixotropy of the OCA solid adhesive is enhanced when the OCA solid adhesive is heated, and even the OCA solid adhesive can utilize the thixotropy of the OCA solid adhesive to follow the TP screen to generate plastic deformation after vacuum defoaming is completed, the phenomenon of small bubbles generated due to stress difference can be avoided, and the attaching effect of the touch screen is enhanced.
Description
Technical Field
The invention relates to the technical field of touch screen preparation, in particular to a laminating method of a touch screen.
Background
Touch screen (also called touch screen or touch panel) is an inductive liquid crystal display device capable of receiving input signals such as touch, when touching graphic buttons on the screen, the touch feedback system on the screen can drive various connecting devices according to a pre-programmed program, and can replace a mechanical button panel and produce vivid video and audio effects by the liquid crystal display picture. As a latest computer input device, the touch screen is the simplest, convenient and natural man-machine interaction mode at present. The multimedia interactive device gives the multimedia a brand-new appearance and is a brand-new multimedia interactive device with great attractiveness.
The production scale of touch-sensitive screen also enlarges day by day, the most leading sense touch device of touch-sensitive screen is the response base plate of installing in transparent face lid below, transparent face lid sets up the outer end at the response base plate in the product, play the effect of protection response base plate, response base plate below sets up the display screen, connect together through OCA optical cement between transparent face lid and response base plate and the display screen, OCA optical cement has high transparency, the luminousness reaches more than 99%, in the strong light irradiation, use also the harmless outward appearance under the environment of high temperature and high humidity. In the prior art, some empty mass remains after the touch screen is attached, so bubbles are generated, and therefore, defoaming treatment needs to be performed after the touch screen is attached. Conventionally, in order to reduce bubbles generated during bonding, a method of placing a touch panel which is previously bonded in a vacuum defoaming machine and defoaming the touch panel has been generally adopted. However, in the actual manufacturing process, we find that after vacuum defoaming is completed in a vacuum defoaming machine, due to the stiffness of the TP screen and the heat sensitivity of the OCA optical adhesive on the touch screen, the stiffness of the TP screen is quickly recovered after vacuum defoaming is completed, and due to the fact that a certain core temperature remains in the OCA optical adhesive, the stiffness of the OCA optical adhesive is recovered very slowly, so that a stress difference is generated between the TP screen and the OCA optical adhesive, and small bubbles are generated between the TP screen and the OCA optical adhesive, so that the attaching effect of the touch screen is greatly influenced.
Disclosure of Invention
In order to solve the above problems, the present invention provides a method for attaching a touch panel, which can effectively solve the above technical problems in the prior art.
The invention adopts the following technical scheme:
a method for attaching a touch screen mainly comprises the following steps:
step 1: wiping and cleaning the outer surface of the TFT screen and the outer surface of the TP screen by using petroleum ether and drying;
step 2: adopting OCA solid glue to align and laminate the TFT screen and the TP screen in the step 1 and manually compress the TFT screen and the TP screen to obtain a semi-finished touch screen;
and step 3: putting the semi-finished touch screen in the step 2 into an OCF machine for pre-laminating to obtain a pre-laminated touch screen;
and 4, step 4: placing the pre-fitted touch screen obtained in the step (3) into a vacuum defoaming machine for vacuum defoaming to obtain a defoaming touch screen;
and 5: placing the defoaming touch screen obtained in the step 4 into a film covering machine to carry out transitional film covering treatment on the outer surface of the defoaming touch screen to obtain a finished touch screen;
step 6: and (5) packaging and warehousing the finished touch screen obtained in the step (5).
Wherein, OCA solid state that adopts in step 1 glues from type rete, viscose layer and second that from the top down sets gradually from the type rete, the viscose layer mainly includes the component of following part by weight: 80-100 parts of acrylate adhesive, 1-3 parts of isocyanate, 2-4 parts of dioctyl phthalate, 6-8 parts of crosslinking curing agent and 5-8 parts of rheological additive.
As a preferable technical scheme of the invention, the rheological additive is prepared by adopting a mixed solution of modified polyurea and N-methylpyrrolidone, and the weight ratio of the modified polyurea to the N-methylpyrrolidone is 1:1.5 to 3.
As a preferable technical scheme of the invention, the temperature for pre-bonding in the step 3 is 65-75 ℃, the pre-bonding time is 60-100S, and the pre-bonding pressure is 0.1-0.2 MPa.
As a preferable technical scheme of the invention, the temperature for vacuum defoaming in the step 4 is 65-70 ℃, the time for vacuum defoaming is 20-25 min, and the pressure for vacuum defoaming is 0.15-0.2 MPa.
The invention has the beneficial effects that:
the rheological additive is added into the OCA solid adhesive used in the invention, so that the thixotropy of the OCA solid adhesive is enhanced when being heated, and the OCA solid adhesive can utilize the thixotropy of the OCA solid adhesive to generate plastic deformation along with a TP screen even if the OCA solid adhesive has a certain core temperature after vacuum defoaming is finished, thereby avoiding the phenomenon of generating small bubbles due to stress difference and enhancing the laminating effect of the touch screen; the rheological additive is prepared from a mixed solution of modified polyurea and N-methylpyrrolidone, so that the thixotropy of the OCA solid adhesive can be enhanced, the heat resistance of the OCA solid adhesive can be effectively improved, the deformation coefficient of the OCA solid adhesive when being heated is reduced, and the probability of bubbles generated between the OCA solid adhesive and a TP screen when being heated is reduced.
Detailed Description
The present invention will now be described in further detail with reference to examples.
Example 1
A method for attaching a touch screen mainly comprises the following steps:
step 1: wiping and cleaning the outer surface of the TFT screen and the outer surface of the TP screen by using petroleum ether and drying;
step 2: adopting OCA solid glue to align and laminate the TFT screen and the TP screen in the step 1 and manually compress the TFT screen and the TP screen to obtain a semi-finished touch screen;
and step 3: putting the semi-finished touch screen in the step 2 into an OCF machine for pre-laminating to obtain a pre-laminated touch screen;
and 4, step 4: placing the pre-fitted touch screen obtained in the step (3) into a vacuum defoaming machine for vacuum defoaming to obtain a defoaming touch screen;
and 5: placing the defoaming touch screen obtained in the step 4 into a film covering machine to carry out transitional film covering treatment on the outer surface of the defoaming touch screen to obtain a finished touch screen;
step 6: and (5) packaging and warehousing the finished touch screen obtained in the step (5).
Wherein, OCA solid state that adopts in step 1 glues from type rete, viscose layer and second that from the top down sets gradually from the type rete, the viscose layer mainly includes the component of following part by weight: 80 parts of acrylate adhesive, 1 part of isocyanate, 2 parts of dioctyl phthalate, 6 parts of crosslinking curing agent and 5 parts of rheological additive;
the rheological additive is prepared from a mixed solution of modified polyurea and N-methylpyrrolidone, and the weight ratio of the modified polyurea to the N-methylpyrrolidone is 1: 1.5;
the pre-bonding temperature in the step 3 is 65 ℃, the pre-bonding time is 100S, and the pre-bonding pressure is 0.1 Mpa; the temperature for vacuum defoaming in the step 4 is 65 ℃, the time for vacuum defoaming is 25min, and the pressure for vacuum defoaming is 0.15 MPa.
Example 2
A method for attaching a touch screen mainly comprises the following steps:
step 1: wiping and cleaning the outer surface of the TFT screen and the outer surface of the TP screen by using petroleum ether and drying;
step 2: adopting OCA solid glue to align and laminate the TFT screen and the TP screen in the step 1 and manually compress the TFT screen and the TP screen to obtain a semi-finished touch screen;
and step 3: putting the semi-finished touch screen in the step 2 into an OCF machine for pre-laminating to obtain a pre-laminated touch screen;
and 4, step 4: placing the pre-fitted touch screen obtained in the step (3) into a vacuum defoaming machine for vacuum defoaming to obtain a defoaming touch screen;
and 5: placing the defoaming touch screen obtained in the step 4 into a film covering machine to carry out transitional film covering treatment on the outer surface of the defoaming touch screen to obtain a finished touch screen;
step 6: and (5) packaging and warehousing the finished touch screen obtained in the step (5).
Wherein, OCA solid state that adopts in step 1 glues from type rete, viscose layer and second that from the top down sets gradually from the type rete, the viscose layer mainly includes the component of following part by weight: 100 parts of acrylate adhesive, 3 parts of isocyanate, 4 parts of dioctyl phthalate, 8 parts of crosslinking curing agent and 8 parts of rheological additive;
the rheological additive is prepared from a mixed solution of modified polyurea and N-methylpyrrolidone, and the weight ratio of the modified polyurea to the N-methylpyrrolidone is 1: 3;
the pre-bonding temperature in the step 3 is 75 ℃, the pre-bonding time is 60S, and the pre-bonding pressure is 0.2 Mpa; the temperature for vacuum defoaming in the step 4 is 70 ℃, the time for vacuum defoaming is 20min, and the pressure for vacuum defoaming is 0.2 MPa.
Example 3
A method for attaching a touch screen mainly comprises the following steps:
step 1: wiping and cleaning the outer surface of the TFT screen and the outer surface of the TP screen by using petroleum ether and drying;
step 2: adopting OCA solid glue to align and laminate the TFT screen and the TP screen in the step 1 and manually compress the TFT screen and the TP screen to obtain a semi-finished touch screen;
and step 3: putting the semi-finished touch screen in the step 2 into an OCF machine for pre-laminating to obtain a pre-laminated touch screen;
and 4, step 4: placing the pre-fitted touch screen obtained in the step (3) into a vacuum defoaming machine for vacuum defoaming to obtain a defoaming touch screen;
and 5: placing the defoaming touch screen obtained in the step 4 into a film covering machine to carry out transitional film covering treatment on the outer surface of the defoaming touch screen to obtain a finished touch screen;
step 6: and (5) packaging and warehousing the finished touch screen obtained in the step (5).
Wherein, OCA solid state that adopts in step 1 glues from type rete, viscose layer and second that from the top down sets gradually from the type rete, the viscose layer mainly includes the component of following part by weight: 90 parts of acrylate adhesive, 2 parts of isocyanate, 3 parts of dioctyl phthalate, 7 parts of crosslinking curing agent and 6 parts of rheological additive.
The rheological additive is prepared from a mixed solution of modified polyurea and N-methylpyrrolidone, and the weight ratio of the modified polyurea to the N-methylpyrrolidone is 1: 2;
the pre-bonding temperature in the step 3 is 70 ℃, the pre-bonding time is 80S, and the pre-bonding pressure is 0.1 Mpa; the temperature for vacuum defoaming in the step 4 is 68 ℃, the time for vacuum defoaming is 23min, and the pressure for vacuum defoaming is 0.2 MPa.
Finally, it should be noted that: these embodiments are merely illustrative of the present invention and do not limit the scope of the present invention. In addition, other variations and modifications will be apparent to persons skilled in the art based on the foregoing description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications of the invention may be made without departing from the scope of the invention.
Claims (4)
1. A method for attaching a touch screen is characterized in that: the method comprises the following steps:
step 1: wiping and cleaning the outer surface of the TFT screen and the outer surface of the TP screen by using petroleum ether and drying;
step 2: adopting OCA solid glue to align and laminate the TFT screen and the TP screen in the step 1 and manually compress the TFT screen and the TP screen to obtain a semi-finished touch screen;
and step 3: putting the semi-finished touch screen in the step 2 into an OCF machine for pre-laminating to obtain a pre-laminated touch screen;
and 4, step 4: placing the pre-fitted touch screen obtained in the step (3) into a vacuum defoaming machine for vacuum defoaming to obtain a defoaming touch screen;
and 5: placing the defoaming touch screen obtained in the step 4 into a film covering machine to carry out transitional film covering treatment on the outer surface of the defoaming touch screen to obtain a finished touch screen;
step 6: packaging and warehousing the finished touch screen obtained in the step 5;
wherein, OCA solid state that adopts in step 1 glues from type rete, viscose layer and second that from the top down sets gradually from the type rete, the viscose layer includes the component of following part by weight: 80-100 parts of acrylate adhesive, 1-3 parts of isocyanate, 2-4 parts of dioctyl phthalate, 6-8 parts of crosslinking curing agent and 5-8 parts of rheological additive.
2. The attaching method of the touch screen according to claim 1, characterized in that: the rheological additive is prepared from a mixed solution of modified polyurea and N-methylpyrrolidone, and the weight ratio of the modified polyurea to the N-methylpyrrolidone is 1:1.5 to 3.
3. The attaching method of the touch screen according to claim 1, characterized in that: the pre-bonding temperature in the step 3 is 65-75 ℃, the pre-bonding time is 60-100S, and the pre-bonding pressure is 0.1-0.2 MPa.
4. The attaching method of the touch screen according to claim 1, characterized in that: the temperature for vacuum defoaming in the step 4 is 65-70 ℃, the time for vacuum defoaming is 20-25 min, and the pressure for vacuum defoaming is 0.15-0.2 MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130827.9A CN109375801B (en) | 2018-09-27 | 2018-09-27 | Laminating method of touch screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811130827.9A CN109375801B (en) | 2018-09-27 | 2018-09-27 | Laminating method of touch screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109375801A CN109375801A (en) | 2019-02-22 |
| CN109375801B true CN109375801B (en) | 2021-06-22 |
Family
ID=65401938
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811130827.9A Active CN109375801B (en) | 2018-09-27 | 2018-09-27 | Laminating method of touch screen |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109375801B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114571536A (en) * | 2020-11-30 | 2022-06-03 | 昊佰电子科技（上海）有限公司 | Method for removing bubbles from die-cut piece |
| CN113580726A (en) * | 2021-07-30 | 2021-11-02 | 广西中沛光电科技有限公司 | Large-size capacitive touch screen attaching method |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1890337A (en) * | 2003-11-21 | 2007-01-03 | Ppg工业俄亥俄公司 | Coatings with improved chip resistance and methods of making the same |
| TW201410822A (en) * | 2012-08-20 | 2014-03-16 | Henkel China Co Ltd | Liquid optically clear photo-curable adhesive for display application |
| WO2014078115A1 (en) * | 2012-11-16 | 2014-05-22 | 3M Innovative Properties Company | Adhesive including pendant (meth) acryloyl groups, article, and method |
| CN104559617A (en) * | 2015-01-23 | 2015-04-29 | 长兴化学工业(中国)有限公司 | Coated water-based double-component fluorocarbon paint, and preparation and application thereof |
| CN104714681A (en) * | 2013-12-12 | 2015-06-17 | 财团法人工业技术研究院 | Electrode structure, manufacturing method thereof, touch element and touch display |
| WO2015126088A1 (en) * | 2014-02-24 | 2015-08-27 | Lg Innotek Co., Ltd. | Touch window and display with the same |
| CN105074636A (en) * | 2013-03-26 | 2015-11-18 | 富士胶片株式会社 | Touch panel and display device |
| CN105505275A (en) * | 2016-02-01 | 2016-04-20 | 深圳市库泰克电子材料技术有限公司 | Liquid optically clear adhesive for full lamination |
| CN105629536A (en) * | 2016-03-31 | 2016-06-01 | 中航华东光电有限公司 | Hard-to-hard liquid crystal screen binding method |
| CN107109157A (en) * | 2014-11-18 | 2017-08-29 | 德莎欧洲公司 | For the uncoiling power for controlling pressure-sensitive adhesive agent material and the modified phyllosilicate for the barrier property for improving adhesive tape |
| CN107918503A (en) * | 2016-10-11 | 2018-04-17 | 苏州欧菲光科技有限公司 | The manufacture method of touch-screen |
| CN207557916U (en) * | 2017-12-18 | 2018-06-29 | 广西中沛光电科技有限公司 | A kind of touch screen blast resistance construction |
| CN108475514A (en) * | 2015-11-09 | 2018-08-31 | 科思创德国股份有限公司 | Kit containing sealant and photopolymer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070048513A1 (en) * | 2005-08-25 | 2007-03-01 | Fuji Photo Film Co., Ltd. | Antireflective film and polarizing plate and image display using same |
| DE102009009757A1 (en) * | 2009-02-20 | 2010-08-26 | Tesa Se | PSA |
| US20140262002A1 (en) * | 2011-10-24 | 2014-09-18 | 3M Innovative Properties Company | Micro-structured optically clear adhesives |
-
2018
- 2018-09-27 CN CN201811130827.9A patent/CN109375801B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1890337A (en) * | 2003-11-21 | 2007-01-03 | Ppg工业俄亥俄公司 | Coatings with improved chip resistance and methods of making the same |
| TW201410822A (en) * | 2012-08-20 | 2014-03-16 | Henkel China Co Ltd | Liquid optically clear photo-curable adhesive for display application |
| WO2014078115A1 (en) * | 2012-11-16 | 2014-05-22 | 3M Innovative Properties Company | Adhesive including pendant (meth) acryloyl groups, article, and method |
| CN105074636A (en) * | 2013-03-26 | 2015-11-18 | 富士胶片株式会社 | Touch panel and display device |
| CN104714681A (en) * | 2013-12-12 | 2015-06-17 | 财团法人工业技术研究院 | Electrode structure, manufacturing method thereof, touch element and touch display |
| WO2015126088A1 (en) * | 2014-02-24 | 2015-08-27 | Lg Innotek Co., Ltd. | Touch window and display with the same |
| CN107109157A (en) * | 2014-11-18 | 2017-08-29 | 德莎欧洲公司 | For the uncoiling power for controlling pressure-sensitive adhesive agent material and the modified phyllosilicate for the barrier property for improving adhesive tape |
| CN104559617A (en) * | 2015-01-23 | 2015-04-29 | 长兴化学工业(中国)有限公司 | Coated water-based double-component fluorocarbon paint, and preparation and application thereof |
| CN108475514A (en) * | 2015-11-09 | 2018-08-31 | 科思创德国股份有限公司 | Kit containing sealant and photopolymer |
| CN105505275A (en) * | 2016-02-01 | 2016-04-20 | 深圳市库泰克电子材料技术有限公司 | Liquid optically clear adhesive for full lamination |
| CN105629536A (en) * | 2016-03-31 | 2016-06-01 | 中航华东光电有限公司 | Hard-to-hard liquid crystal screen binding method |
| CN107918503A (en) * | 2016-10-11 | 2018-04-17 | 苏州欧菲光科技有限公司 | The manufacture method of touch-screen |
| CN207557916U (en) * | 2017-12-18 | 2018-06-29 | 广西中沛光电科技有限公司 | A kind of touch screen blast resistance construction |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109375801A (en) | 2019-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106379023B (en) | The method and one screen that a kind of curve screens and plane display module are bonded entirely | |
| CN109471567B (en) | Attaching process of capacitive touch screen | |
| CN109375801B (en) | Laminating method of touch screen | |
| CN110136581B (en) | Thermoplastic optical adhesive attaching method and application and display | |
| CN105005108B (en) | Display device, full laminating polaroid and its production method | |
| TWI267773B (en) | Manufacturing method of a touch panel | |
| CN102184049B (en) | Glue-overflow-preventing stitching structure and method for flexible circuit board for touch screen | |
| CN204251550U (en) | A kind of optics double sticky tape | |
| CN101504496A (en) | Touch screen and panel display module integrated combination module and method for producing the same | |
| CN112622375A (en) | Multilayer structure base material, foam adhesive tape using base material and preparation method of foam adhesive tape | |
| CN108468691B (en) | AB type glue laminating process of curved surface 3D touch screen or display screen | |
| CN204925436U (en) | Polaroid and have touch -sensitive display device of this polaroid | |
| CN102207805A (en) | Capacitive touch screen and manufacture method thereof | |
| WO2021068395A1 (en) | Touch display device and manufacturing method therefor | |
| CN105223703B (en) | Device with touch-control Yu three-D image display function | |
| CN105629536A (en) | Hard-to-hard liquid crystal screen binding method | |
| CN202093499U (en) | Capacitive touch screen | |
| CN103333620A (en) | Method for preparing gluing component | |
| CN202615360U (en) | Touch capacitive screen | |
| CN103786410A (en) | Sealant gluing and manufacturing technology of G+G (sensor glass+tempered glass cover plate structure) capacitor screen | |
| CN104527196B (en) | A kind of preparation method of the optical cement of thicker without base material | |
| CN109164933B (en) | Laminating method and touch screen | |
| CN103709941A (en) | Optically clear adhesive (OCA) and OCA tape | |
| CN113322016A (en) | Anti-warping, stretchable and removable shading adhesive tape and preparation method thereof | |
| CN207690047U (en) | A kind of full fitting display 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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: A method for fitting touch screens Effective date of registration: 20230703 Granted publication date: 20210622 Pledgee: Guangxi Laibin Rural Commercial Bank Co.,Ltd. Pledgor: GUANGXI ZHONGPEI OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Registration number: Y2023450000095 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |