CN110794601B - Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display - Google Patents
Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display Download PDFInfo
- Publication number
- CN110794601B CN110794601B CN201911137094.6A CN201911137094A CN110794601B CN 110794601 B CN110794601 B CN 110794601B CN 201911137094 A CN201911137094 A CN 201911137094A CN 110794601 B CN110794601 B CN 110794601B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- crystal display
- curved
- arc surface
- curvature
- 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
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Liquid Crystal (AREA)
Abstract
The invention relates to a method for manufacturing a liquid crystal display with a large-curvature curved surface, which comprises the following steps: manufacturing or selecting a jig; the jig comprises an arc surface, and the radius of the arc surface is equal to the radius corresponding to the curvature of the curved liquid crystal display to be manufactured; the arc surface is marked with scales according to the size of a set radian as a unit; testing the maximum bending angle of the glass; carrying out multiple pressing tests on the glass material to be processed on the arc surface of the jig to obtain scale values of two ends of the corresponding joint of the glass material and the arc surface in the maximum bending shape state; obtaining a curved tangent line after the curved liquid crystal display is optimally curved under the curvature of the curved liquid crystal display; the optimal curve tangent line is an arc line taking the radius of the arc surface as the radius, and two end points of the arc line are respectively two scale values; by the manufacturing method, the circular tangent line of the bent liquid crystal glass can be found accurately, reliable basis is provided for the design of a liquid crystal display product, and the design difficulty and the fragment risk are reduced.
Description
Technical Field
The invention relates to the technical field of liquid crystal displays, in particular to a method and equipment for manufacturing a large-curvature curved liquid crystal display and a display.
Background
The liquid crystal glass adopts physical bending when being made into a curved screen, and because the liquid crystal glass is not a flexible material, the bending curve of the liquid crystal glass during bending is not a curve of an arc but a middle arc, and two sides are curved tangent lines formed by straight lines, the two sides of the glass can not be bent due to the problem of the material, so that the stress of the liquid crystal glass is large after bending, and the liquid crystal glass is easy to break when being processed;
the curvature of the existing curved-surface display is 1500R, the phenomenon of fragment or curved-surface degumming still occurs, if the design is carried out below 1200R or 1000R, the difficulty of design and the risk of fragment of liquid crystal glass are increased sharply, and the root cause of the aspect is as follows: the designer does not find a reasonable curve of the bent liquid crystal glass;
therefore, a method for accurately finding the curve of the bent liquid crystal glass is needed.
Disclosure of Invention
The present invention provides a method and an apparatus for manufacturing a liquid crystal display with a curved surface with large curvature, and a display.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a manufacturing method of a large-curvature curved-surface liquid crystal display is constructed, and the implementation method comprises the following steps:
the first step is as follows: manufacturing or selecting a jig;
the jig comprises an arc surface, and the radius of the arc surface is equal to the radius corresponding to the curvature of the curved liquid crystal display to be manufactured; the arc surface is marked with scales according to the size of a set radian as a unit;
the second step is that: testing the maximum bending angle of the glass;
carrying out multiple pressing tests on the glass material to be processed on the arc surface of the jig to obtain scale values of two ends of the corresponding joint of the glass material and the arc surface in the maximum bending shape state;
the third step: obtaining a curved tangent line after the curved liquid crystal display is optimally curved under the curvature of the curved liquid crystal display;
the optimal curve tangent line is an arc line taking the radius of the arc surface as the radius, and two scale values are respectively arranged at two end points of the arc line.
The invention relates to a method for manufacturing a liquid crystal display with a large-curvature curved surface, wherein in the first step, the radian is set to be 0.1-2 degrees.
The invention relates to a method for manufacturing a liquid crystal display with a large-curvature curved surface, wherein in the first step, the marked scale takes the vertex of the arc surface as a 0 scale point; and in the second step, when the press test is carried out, the contact origin of the glass material and the arc surface is the vertex of the arc surface.
In the second step, the pressing test takes whether the two end parts of the glass material can be bent continuously or whether fragments appear as the detection standard of the maximum bending state.
The manufacturing equipment of the large-curvature curved-surface liquid crystal display comprises a jig, wherein the arc surface is arranged on the upper surface of the jig, and the arc surface is marked with scales according to a set radian size.
The manufacturing equipment of the liquid crystal display with the large-curvature curved surface, disclosed by the invention, is characterized in that the size of the set radian is 0.1-2 degrees.
The manufacturing equipment of the liquid crystal display with the large-curvature curved surface is characterized in that the marking scale takes the vertex of the arc surface as a 0-scale point.
The liquid crystal display screen of the liquid crystal display with the large-curvature curved surface is manufactured by bending according to the optimal curved tangent line obtained by the manufacturing method of the liquid crystal display with the large-curvature curved surface.
The large-curvature curved surface liquid crystal display also comprises a back plate, wherein a pressing plate for pressing and holding the liquid crystal display screen is fixed on the back plate; the pressing plate is used for pressing one surface of the liquid crystal display screen to be consistent with the shape of the liquid crystal display screen.
The liquid crystal display with the large-curvature curved surface further comprises a front frame for mounting the liquid crystal display screen, wherein the upper edge and the lower edge of the front frame are consistent with the liquid crystal display screen in shape; the front frame and the pressing plate are respectively positioned on the front side and the rear side of the liquid crystal display screen.
The invention has the beneficial effects that: by the manufacturing method, the round tangent line of the bent liquid crystal glass can be accurately found, a reliable basis is provided for the design of a liquid crystal display product, the design difficulty and the fragment risk are reduced, and the product performance is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only part of the embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive efforts according to the accompanying drawings:
FIG. 1 is a flow chart of a method for fabricating a liquid crystal display with a large curvature surface according to a preferred embodiment of the present invention;
FIG. 2 is a press test chart of a method for manufacturing a large curvature curved liquid crystal display according to a preferred embodiment of the present invention;
FIG. 3 is a schematic diagram of a preferred embodiment of a large curvature curved LCD.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without inventive step, are within the scope of the present invention.
Referring to fig. 1 and fig. 2, a method for manufacturing a large curvature curved liquid crystal display according to a preferred embodiment of the present invention is as follows:
s01: manufacturing or selecting a jig;
the jig comprises an arc surface, and the radius of the arc surface is equal to the radius corresponding to the curvature of the curved liquid crystal display to be manufactured; the arc surface is marked with scales according to the size of a set radian as a unit;
s02: testing the maximum bending angle of the glass;
carrying out multiple pressing tests on the glass material to be processed on the arc surface of the jig to obtain scale values of two ends of the corresponding joint of the glass material and the arc surface in the maximum bending shape state;
s03: obtaining a curved tangent line after the curved liquid crystal display is optimally curved under the curvature of the curved liquid crystal display;
the optimal curve tangent line is an arc line taking the radius of the arc surface as the radius, and two end points of the arc line are respectively two scale values;
by the manufacturing method, the circular tangent line of the bent liquid crystal glass can be found accurately, reliable basis is provided for the design of a liquid crystal display product, the design difficulty and the fragment risk are reduced, and the product performance is greatly improved;
specifically, the method comprises the following steps: after the circle tangent line of the liquid crystal glass is found, the shape of the front frame, the shape of the back plate, the position for preventing glue dropping, the shape of the light guide plate and the like can be designed on the basis of the circle tangent line, so that the design difficulty is greatly reduced, the risk of breaking the product is reduced, the stability of the product is improved, and the problems that the curve of the bent light guide plate cannot coincide with the curve of the liquid crystal glass and the lamp beads of the light guide plate and the lamp bar are in alignment are solved;
an example of a curved display to make a curvature of 800R, as shown in fig. 2, is as follows:
selecting or manufacturing an 800R arc jig, and making digital marks corresponding to arcs on the jig, wherein the distance between every two digits is 1 degree;
the liquid crystal glass is subjected to a bending test on a 800R jig, the liquid crystal glass is bent and deformed on the jig by pressing down the two sides of the liquid crystal glass, whether the two end parts of the glass material can be bent continuously or whether fragments appear is taken as a detection standard of the maximum bending state, and the tangent point radian of the extreme position is found to be 14.5 degrees after multiple tests;
two middle circular arc sections corresponding to 14.5 degrees at two ends are the found circular tangent lines.
Preferably, in the first step, the radian is set to be 0.1-2 degrees; other degrees may be selected, and the smaller the radian units of the indicia, the more accurate the reading will be.
Preferably, in the first step, the marked scale takes the vertex of the arc surface as a 0 scale point; in the second step, when the pressing test is carried out, the contact origin of the glass material and the arc surface is the vertex of the arc surface; identification is facilitated.
Preferably, in the second step, the pressing test is performed to determine whether the two end portions of the glass material can be bent continuously or whether the glass material has a broken piece as a maximum bending state detection criterion.
According to the manufacturing method of the large-curvature curved-surface liquid crystal display, as shown in fig. 2, the manufacturing device comprises a jig, wherein an arc surface is arranged on the upper surface of the jig, and the arc surface is marked with scales according to a set radian as a unit.
Preferably, the set arc is 0.1 to 2 degrees.
Preferably, the marking scale takes the vertex of the arc surface as a 0 scale point.
According to the manufacturing method of the large-curvature curved-surface liquid crystal display, as shown in fig. 3, the liquid crystal display screen of the large-curvature curved-surface liquid crystal display is manufactured by bending according to the best curved tangent line obtained by the manufacturing method of the large-curvature curved-surface liquid crystal display.
Preferably, the large-curvature curved liquid crystal display further comprises a back plate (not shown in the figure), and a pressing plate 1 for pressing and holding the liquid crystal display screen is fixed on the back plate; the pressing plate 1 is used for pressing one surface of the liquid crystal display screen to be consistent with the shape of the liquid crystal display screen; the liquid crystal glass is kept uniform pressure and holding force, so that partial resilience force of the liquid crystal glass is offset, the degumming and deformation probability of the liquid crystal glass is reduced, and the product stability is improved.
Preferably, the curvature curved surface liquid crystal display further comprises a front frame 2 for mounting the liquid crystal display screen, and the upper edge and the lower edge of the front frame 2 are consistent with the shape of the liquid crystal display screen; the front frame 2 and the pressing plate 1 are respectively positioned at the front side and the rear side of the liquid crystal display screen; further reducing the probability of degumming and deformation of the liquid crystal glass and improving the stability of the product.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.
Claims (10)
1. A method for manufacturing a liquid crystal display with a large-curvature curved surface is characterized by comprising the following steps:
the first step is as follows: manufacturing or selecting a jig;
the jig comprises an arc surface, and the radius of the arc surface is equal to the radius corresponding to the curvature of the curved liquid crystal display to be manufactured; the arc surface is marked with scales according to a set radian size as a unit;
the second step: testing the maximum bending angle of the glass;
carrying out multiple pressing tests on the glass material to be processed on the arc surface of the jig to obtain scale values of two ends of the corresponding joint of the glass material and the arc surface in the maximum bending shape state;
the third step: obtaining a curved tangent line after the curved liquid crystal display is optimally curved under the curvature of the curved liquid crystal display;
the optimal curve tangent line is an arc line taking the radius of the arc surface as the radius, and two end points of the arc line are respectively the two scale values.
2. The method of claim 1, wherein the radian is set to 0.1-2 degrees in the first step.
3. The method according to claim 1, wherein in the first step, the marked scale is a 0-point scale with the vertex of the arc surface; in the second step, when the press test is carried out, the contact origin of the glass material and the arc surface is the vertex of the arc surface.
4. The method as claimed in claim 1, wherein in the second step, the pressing test is performed to determine whether the two end portions of the glass material can be bent or whether the glass material has a maximum bending state.
5. The manufacturing equipment of the liquid crystal display with the large-curvature curved surface is characterized by comprising a jig, wherein the arc surface is arranged on the upper surface of the jig, and the arc surface is marked according to a set radian size.
6. The apparatus of claim 5, wherein the set curvature is 0.1-2 degrees.
7. The apparatus of claim 5, wherein the mark scale is a 0-point scale mark on the top of the arc surface.
8. The method for manufacturing the liquid crystal display with the large-curvature curved surface according to any one of claims 1 to 4, wherein a liquid crystal display screen of the liquid crystal display with the large-curvature curved surface is manufactured by bending according to the optimal curved tangent line obtained by the method for manufacturing the liquid crystal display with the large-curvature curved surface.
9. The large curvature curved surface liquid crystal display device of claim 8, further comprising a back plate, wherein a pressing plate for pressing and holding the liquid crystal display panel is fixed on the back plate; the pressing plate is used for pressing one surface of the liquid crystal display screen to be consistent with the shape of the liquid crystal display screen.
10. The curved surface lcd of claim 9, further comprising a front frame for mounting the lcd panel, wherein the front frame has upper and lower edges conforming to the lcd panel; the front frame and the pressing plate are respectively positioned on the front side and the rear side of the liquid crystal display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137094.6A CN110794601B (en) | 2019-11-19 | 2019-11-19 | Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911137094.6A CN110794601B (en) | 2019-11-19 | 2019-11-19 | Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110794601A CN110794601A (en) | 2020-02-14 |
| CN110794601B true CN110794601B (en) | 2022-08-30 |
Family
ID=69445440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911137094.6A Active CN110794601B (en) | 2019-11-19 | 2019-11-19 | Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110794601B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112349208B (en) * | 2020-11-12 | 2022-10-25 | 京东方科技集团股份有限公司 | Auxiliary bending mechanism and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050018602A (en) * | 2003-08-08 | 2005-02-23 | 파이오니아 플라즈마 디스플레이 가부시키가이샤 | Print method and print apparatus of flat substrate, manufacturing method of plasma display panel, and manufacturing method of liquid crystal display apparatus |
| CN106338851A (en) * | 2016-10-31 | 2017-01-18 | 深圳市华星光电技术有限公司 | Curved liquid crystal panel and curved liquid crystal display |
| CN107207314A (en) * | 2015-02-05 | 2017-09-26 | 旭硝子株式会社 | Curved surface protective glass and its manufacture method and vehicle-mounted display member |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5486275B2 (en) * | 2009-11-25 | 2014-05-07 | パナソニック液晶ディスプレイ株式会社 | Liquid crystal display |
| KR101746650B1 (en) * | 2014-09-02 | 2017-06-14 | 주식회사 토비스 | a apparatus of curved display manufacturing, and a method of curved display manufacturing |
| US9759948B2 (en) * | 2014-11-10 | 2017-09-12 | Samsung Display Co., Ltd. | Curved liquid crystal display |
| JP6995443B2 (en) * | 2018-03-19 | 2022-01-14 | 三菱電機株式会社 | Display device |
-
2019
- 2019-11-19 CN CN201911137094.6A patent/CN110794601B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20050018602A (en) * | 2003-08-08 | 2005-02-23 | 파이오니아 플라즈마 디스플레이 가부시키가이샤 | Print method and print apparatus of flat substrate, manufacturing method of plasma display panel, and manufacturing method of liquid crystal display apparatus |
| CN107207314A (en) * | 2015-02-05 | 2017-09-26 | 旭硝子株式会社 | Curved surface protective glass and its manufacture method and vehicle-mounted display member |
| CN106338851A (en) * | 2016-10-31 | 2017-01-18 | 深圳市华星光电技术有限公司 | Curved liquid crystal panel and curved liquid crystal display |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110794601A (en) | 2020-02-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110794601B (en) | Method and equipment for manufacturing large-curvature curved-surface liquid crystal display and display | |
| USRE43992E1 (en) | Lamp holding apparatus, backlight device for display device including same, display device including same and liquid crystal display device including backlight device for display device | |
| US8208018B2 (en) | Method for measuring brightness uniformity of a panel | |
| WO2017152465A1 (en) | Mura phenomenon compensation method for curved-surface liquid crystal panel | |
| CN105589230B (en) | The Mura compensation methodes in face plate indicia method for detecting and face plate indicia region | |
| CN109455906A (en) | The manufacturing method of 3D the cover glass and its molding die and 3D the cover glass | |
| IT201800004673A1 (en) | PROCEDURE AND SYSTEM FOR DETECTION OF DEFECTS IN A TIRE | |
| CN105005161B (en) | Mistake proofing crimping production method, structure and the display panel of display panel | |
| CN104298000A (en) | Backlight source and display device | |
| CN106502044B (en) | Mask plate and manufacturing method thereof | |
| CN109016481B (en) | Mobile phone film pasting method | |
| CN107735721B (en) | Display device | |
| CN103698912A (en) | Method for positioning defect sub pixel position | |
| CN106168868B (en) | Shadow eliminating detection method and manufacturing method of touch substrate, touch substrate and touch device | |
| JP5476807B2 (en) | Method for evaluating luminance unevenness of glass substrate for display and method for manufacturing glass substrate for display | |
| US6825897B2 (en) | Indicator for deciding grinding amount of liquid crystal display panel and method for detecting grinding failure using the same | |
| CN101576576A (en) | Probe card assembly and medium devices used for same | |
| CN114609818A (en) | Display compensation method of curved surface display panel, curved surface screen and display device | |
| CN105892779A (en) | Touch panel for testing and deformation testing system and method | |
| JP2007025322A (en) | Printing mark layout of progressive refractive power lens | |
| CN218673426U (en) | Integrated tempered glass identification thickness gauge | |
| CN106773372B (en) | Common electrode structure, liquid crystal display panel and manufacturing method | |
| CN218967692U (en) | Transportation assembly of transparent hard screen of LED | |
| CN112666790B (en) | Scale, photomask and method for judging whether edge exposure of array substrate is satisfactory | |
| JP7391164B1 (en) | Flexible glass and its manufacturing method |
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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230726 Address after: 3rd Floor, Building 1, Yali Industrial Park, No. 13, Tianbao Road, Yingrenshi Community, Shiyan Street, Baoan District, Shenzhen, Guangdong 518000 Patentee after: Shenzhen Jitai Intelligent Technology Co.,Ltd. Address before: 518000 6th floor, building C16, Fuyuan Industrial City, 598 Zhoushi Road, Jiuwei community, Hangcheng street, Bao'an District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TIEM ELECTRONIC SPORTS TECHNOLOGY CO.,LTD. |
|
| TR01 | Transfer of patent right |