CN109824249A - A kind of 3D glass making procedures - Google Patents
A kind of 3D glass making procedures Download PDFInfo
- Publication number
- CN109824249A CN109824249A CN201910270423.8A CN201910270423A CN109824249A CN 109824249 A CN109824249 A CN 109824249A CN 201910270423 A CN201910270423 A CN 201910270423A CN 109824249 A CN109824249 A CN 109824249A
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- CN
- China
- Prior art keywords
- glass
- pieces
- making procedures
- raw material
- bending
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- 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.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B21/00—Severing glass sheets, tubes or rods while still plastic
- C03B21/04—Severing glass sheets, tubes or rods while still plastic by punching out
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/035—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending
- C03B23/0352—Re-forming glass sheets by bending using a gas cushion or by changing gas pressure, e.g. by applying vacuum or blowing for supporting the glass while bending by suction or blowing out for providing the deformation force to bend the glass sheet
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B33/00—Severing cooled glass
- C03B33/08—Severing cooled glass by fusing, i.e. by melting through the glass
- C03B33/082—Severing cooled glass by fusing, i.e. by melting through the glass using a focussed radiation beam, e.g. laser
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Optics & Photonics (AREA)
- Toxicology (AREA)
- Re-Forming, After-Treatment, Cutting And Transporting Of Glass Products (AREA)
Abstract
The invention discloses a kind of 3D glass making procedures, comprising the following steps: step 1, the glass baseplate of bulk is cut into the pieces of glass of pre-set dimension；Step 2, pieces of glass is placed in a mold, at a temperature of glass bending, after pieces of glass softening, is fitted in pieces of glass bending on mould curved surface by vacuum suction, forms 3D glass raw material；Step 3, the laser cutting of shape and hole is carried out to 3D glass raw material, forms 3D parison；Step 4,3D parison is subjected to CNC polishing chamfering, obtains 3D glass；Step 5, the surface of 3D glass is carried out clearing off processing.The present invention is formed by reserving the glass of machining allowance, shape is cut by laser after molding, directly form the 3D glass shape needed, avoid the reverse development process derived with repetition test, reduce the development difficulty of wide-angle new product, the development cycle is shortened, and improves product yield, is reduced costs.
Description
Technical field
The present invention relates to technical field of electronic equipment, especially a kind of 3D glass making procedures.
Background technique
With the rapid development of electronic equipment, in order to improve the aesthetic feeling of electronic equipment, 3D glass using more and more.It is existing
Some 3D glass making procedures are mostly as shown in Figs 1-4, comprising the following steps:
Sawing sheet: the glass baseplate of bulk is cut into the fritter square glass of pre-set dimension by step S10.
Step S20, CNC finishing impression: square glass, to shape, hole, chamfer machining, forms high-precision size by carving machine
2D glass.
Step S30, it is hot-forming: 2D glass to be accurately put into mold groove, mold at least punch-pin and cavity plate, mould
Tool is heated at high temperature to 700~750 DEG C by molding machine, and after glass plate softening, profiled part is moved down to the hot bending die
To apply pressure, by glass plate, hot bending machine-shaping is 3D glass in the hot bending die.
Step S40, grinding: in hot-forming, female die of die and punch-pin and glass have pressure contact, lead to glass surface
The mold marking is formed, needs that the convex surface of the 3D glass after hot-forming and concave surface are carried out clearing off processing, makes the table of 3D glass
Face is more smooth, mellow and full, enhances three-dimensional sense.
Existing 3D glass making procedures there are the problem of:
1, yield is low
When hot-forming, 2D glass can deviate in a mold because of placement position or briquetting pressure unevenness leads to 3D after molding
Glass size is unqualified, as left and right camber is unequal.
2, die marks weight is ground at high cost
Because molding convex mould and cavity plate are with glass surface contact, cause convex surface and concave surface to generate press back, lead to glass
Glass convex surface needs to grind 35 minutes, and concave surface needs to grind 55 minutes, has aggravated processing cost.
3, die life is low, high production cost
In molding, mold compression phase mutual friction leads to die surface service life reduction, and dust particles easy to fall off are attached to glass
Surface forms the unrepairables defects such as point.
4, the new product developments such as wide-angle are difficult
Punch-pin and the molding of cavity plate high-temperature laminating, when requiring 3D glass bending angle close to 90 °, it may appear that side and cambered surface
Unbalance stress causes glass breaking or cambered surface in uneven thickness etc. bad.When requiring 3D glass bending angle to be greater than 90 degree, need
Multiple die mould is carried out, more complicated mould structure is developed.
5, new product development cycle is long
Existing technical solution: according to 3D glass size, 2D glass shape ruler after expansion is inversely derived in thermoforming analysis
It is very little, then mold is made, molded test corrects 2D glass size, can generally pass through 3-5 amendment repeatedly, in the process after detection
Mold processing, examination molding, detection, development cycle are long.
Summary of the invention
The technical problems to be solved by the present invention are: in view of the above problems, a kind of 3D glass making procedures are provided,
Product yield is improved, while reducing cost.
The technical solution adopted by the invention is as follows:
A kind of 3D glass making procedures, comprising the following steps:
Step 1, the glass baseplate of bulk is cut into the pieces of glass of pre-set dimension；
Step 2, pieces of glass is placed in a mold, at a temperature of glass bending, after pieces of glass softening, by true
Suction is attached to be fitted in pieces of glass bending on mould curved surface, forms 3D glass raw material；
Step 3, the laser cutting of shape and hole is carried out to 3D glass raw material, forms 3D parison；
Step 4,3D parison is subjected to CNC polishing chamfering, removes burrs on edges, obtains 3D glass；
Step 5, the surface of 3D glass is carried out clearing off processing.
Further, the pieces of glass is rectangular.
Further, the mold is the cavity plate of graphite material, and female bottom has downwardly open suction tank.
Further, the glass bending temperature is 700~750 DEG C.
Further, use laser cutting machine to the laser cutting for carrying out shape and hole to 3D glass raw material in step 3.
Further, the convex surface of 3D glass and concave surface are carried out in step 5 clearing off processing.
Further, the convex surface of 3D glass is carried out clearing off processing in 25 minutes in step 5, concave surface progress 15 to 3D glass
Minute clears off processing.
In conclusion by adopting the above-described technical solution, the beneficial effects of the present invention are:
1, the present invention is according to 3D convex size, equity design mould curved surface, by reserve the glass of machining allowance into
Row forms, and shape is cut by laser after molding, directly forms the 3D glass shape needed, avoids reverse derive and repetition test
Development process reduces the development difficulty of wide-angle new product, shortens the development cycle, and improve product yield, reduces
Cost.
2, the heat suction moulding process that the present invention uses is used only a cavity plate and avoids punch-pin without using punch-pin
With the process of cavity plate CONTACT WITH FRICTION, reduce die wear, improve die life, and be equivalent to half mold, saves
About cost.
3, heat of the invention inhales moulding process keeps glass equal by adjusting the arrangement and angle of the suction tank of mold bottom
Even stress can develop the 3D glass of various bending angle easily.
4, heat of the invention inhales moulding process, and no punch-pin avoids the contact of 3D glass and punch-pin, alleviates press back
Defect, while vacuum suction alleviates contact force, alleviates convex press back, so that convex grinding is only needed 25, concave surface
Grinding only needs 15 minutes, has saved grinding cost.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, below will be to needed in the embodiment attached
Figure is briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not construed as pair
The restriction of range for those of ordinary skill in the art without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 is the sawing sheet process schematic of the 3D glass making procedures of the prior art.
Fig. 2 is the CNC finishing impression process schematic of the 3D glass making procedures of the prior art.
Fig. 3 is the hot-forming process schematic of the 3D glass making procedures of the prior art.
Fig. 4 is the process of lapping schematic diagram of the 3D glass making procedures of the prior art.
Fig. 5 is the flow diagram of 3D glass making procedures of the invention.
Fig. 6 is the sawing sheet process schematic of 3D glass making procedures of the invention.
Fig. 7 is that the heat of 3D glass making procedures of the invention inhales forming process schematic diagram
Fig. 8 is the laser cutting process schematic diagram of 3D glass making procedures of the invention
Fig. 9 is the CNC chamfer process schematic diagram of 3D glass making procedures of the invention
Figure 10 is the process of lapping schematic diagram of 3D glass making procedures of the invention.
Appended drawing reference: 1- fritter square glass, 2-3D glass raw material, 3-3D parison, 4-3D glass, 13- mold,
14- suction tank, 15- vacuum suction direction.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention, i.e., described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is logical
The component for the embodiment of the present invention being often described and illustrated herein in the accompanying drawings can be arranged and be designed with a variety of different configurations.
Therefore, claimed invention is not intended to limit to the detailed description of the embodiment of the present invention provided in the accompanying drawings below
Range, but be merely representative of selected embodiment of the invention.Based on the embodiment of the present invention, those skilled in the art are not having
Every other embodiment obtained under the premise of creative work is made, shall fall within the protection scope of the present invention.
Feature and performance of the invention are described in further detail with reference to embodiments.
A kind of 3D glass making procedures provided in this embodiment, as shown in Figure 5-10, comprising the following steps:
Sawing sheet: the glass baseplate of bulk is cut into the fritter square glass 1 of pre-set dimension by step S1；The rectangular glass of fritter
The size of glass 1 is reserved with machining allowance relative to molding 3D glass 4, and machining allowance is removed by subsequent laser cutting, kept away
Exempt from glass bad problem of uncontrollable factor bring size in forming process, promotes product yield.
Step S2, heat inhale molding: fritter square glass 1 being placed in mold groove, glass bending temperature is then heated to
700~750 DEG C of degree makes the bending of fritter square glass 1 be fitted in mould curved surface after pieces of glass softening by vacuum suction
On, form 3D glass raw material 2；Specifically, the mold is the cavity plate of graphite material, and female bottom has downwardly open air-breathing
Slot 14；Graphite material has gas permeability, and the vacuum suction direction 15 in Fig. 6 vacuumizes slot, due to depositing for suction tank 14
Vacuum pressure difference is being generated when vacuumizing, and is fitted in the bending absorption of fritter square glass 1 on mould curved surface.The heat of the present embodiment
It inhales moulding process and avoids the process of punch-pin and cavity plate CONTACT WITH FRICTION without using punch-pin using only a cavity plate, reduce
Die wear, improves die life, and be equivalent to half mold, has saved cost.Meanwhile the heat of the present embodiment
Inhaling moulding process makes glass uniform stressed by adjusting the arrangement and angle of the suction tank of mold bottom, can develop easily various
The 3D glass of bending angle.
Laser cutting: step S3 carries out the laser cutting of shape and hole, shape using laser cutting machine to 3D glass raw material 2
At 3D parison 3；For laser cutting after forming 3D glass raw material 2, removal glass reserves machining allowance, reaches high-precision
Size requirement, cutting efficiency is higher, and cost is lower relative to directly using CNC to carry out for the technique.
Step S4, CNC chamfering: 3D parison 3 is subjected to CNC polishing chamfering, burrs on edges is removed, obtains 3D glass
4。
Grinding: step S5 carries out the surface of 3D glass 4 to clear off processing, removes the press back on 4 surface of 3D glass, make 3D glass
The surface of glass 4 is more smooth, mellow and full, enhances three-dimensional sense.Since the present embodiment inhales moulding process using cavity plate heat, without convex
Mould avoids the contact of 3D glass 4 Yu punch-pin, alleviates press back defect, while vacuum suction alleviates contact force, mitigates
Convex press back makes the grinding of 3D glass 4 convex surface only need 25 minutes, and concave surface grinding only needs 15 minutes, has saved grinding
Cost.
The present embodiment is according to 3D convex size, equity design mould curved surface, by reserve the glass of machining allowance into
Row forms, and shape is cut by laser after molding, directly forms the 3D glass shape needed, avoids reverse derive and repetition test
Development process reduces the development difficulty of wide-angle new product, shortens the development cycle, and improve product yield, reduces
Cost.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (7)
1. a kind of 3D glass making procedures, which comprises the following steps:
Step 1, the glass baseplate of bulk is cut into the pieces of glass of pre-set dimension；
Step 2, pieces of glass is placed in a mold, at a temperature of glass bending, after pieces of glass softening, is inhaled by vacuum
It is attached to be fitted in pieces of glass bending on mould curved surface, form 3D glass raw material；
Step 3, the laser cutting of shape and hole is carried out to 3D glass raw material, forms 3D parison；
Step 4,3D parison is subjected to CNC polishing chamfering, obtains 3D glass；
Step 5, the surface of 3D glass is carried out clearing off processing.
2. 3D glass making procedures as described in claim 1, which is characterized in that the pieces of glass is rectangular.
3. 3D glass making procedures as described in claim 1, which is characterized in that the mold is the cavity plate of graphite material, recessed
Mould bottom has downwardly open suction tank.
4. 3D glass making procedures as described in claim 1, which is characterized in that the glass bending temperature is 700~750
℃。
5. 3D glass making procedures as described in claim 1, which is characterized in that using laser cutting machine to 3D in step 3
The laser cutting of glass raw material progress shape and hole.
6. 3D glass making procedures as described in claim 1, which is characterized in that the convex surface and concave surface of 3D glass in step 5
It carries out clearing off processing.
7. 3D glass making procedures as claimed in claim 6, which is characterized in that carry out 25 to the convex surface of 3D glass in step 5
Minute clear off processing, cleared off processing to the progress of the concave surface of 3D glass 15 minutes.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270423.8A CN109824249A (en) | 2019-04-04 | 2019-04-04 | A kind of 3D glass making procedures |
| CN201910585521.0A CN110272187B (en) | 2019-04-04 | 2019-07-01 | 3D glass and manufacturing method thereof |
| CN201921229977.5U CN210974401U (en) | 2019-04-04 | 2019-07-31 | 3D glass manufacturing system and 3D glass |
| PCT/CN2019/098561 WO2020199438A1 (en) | 2019-04-04 | 2019-07-31 | 3d glass and manufacturing method therefor, mold and 3d glass blank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910270423.8A CN109824249A (en) | 2019-04-04 | 2019-04-04 | A kind of 3D glass making procedures |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109824249A true CN109824249A (en) | 2019-05-31 |
Family
ID=66874832
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910270423.8A Pending CN109824249A (en) | 2019-04-04 | 2019-04-04 | A kind of 3D glass making procedures |
| CN201910585521.0A Active CN110272187B (en) | 2019-04-04 | 2019-07-01 | 3D glass and manufacturing method thereof |
| CN201921229977.5U Active CN210974401U (en) | 2019-04-04 | 2019-07-31 | 3D glass manufacturing system and 3D glass |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910585521.0A Active CN110272187B (en) | 2019-04-04 | 2019-07-01 | 3D glass and manufacturing method thereof |
| CN201921229977.5U Active CN210974401U (en) | 2019-04-04 | 2019-07-31 | 3D glass manufacturing system and 3D glass |
Country Status (2)
| Country | Link |
|---|---|
| CN (3) | CN109824249A (en) |
| WO (1) | WO2020199438A1 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110272187A (en) * | 2019-04-04 | 2019-09-24 | 拓米(成都)应用技术研究院有限公司 | A kind of 3D glass and preparation method thereof |
| CN110395887A (en) * | 2019-08-05 | 2019-11-01 | 重庆两江联创电子有限公司 | Bend glass forming method |
| CN110950525A (en) * | 2019-12-10 | 2020-04-03 | Oppo广东移动通信有限公司 | Double-curved glass, preparation method thereof and electronic equipment |
| CN112358170A (en) * | 2020-11-12 | 2021-02-12 | 科立视材料科技有限公司 | 3D glass forming device and preparation method of 3D glass |
| CN112429948A (en) * | 2020-12-02 | 2021-03-02 | 万津实业(赤壁)有限公司 | Curved glass processing method |
| CN112520995A (en) * | 2020-12-15 | 2021-03-19 | 深圳沃特佳科技有限公司 | Laser-assisted CNC (computerized numerical control) efficiency improving technology |
| CN113121126A (en) * | 2019-12-31 | 2021-07-16 | 上海雷佳科学仪器有限公司 | Manufacturing process of novel high borosilicate chromatography expansion cylinder |
| CN113402159A (en) * | 2020-03-17 | 2021-09-17 | 烟台科慧科技服务有限公司 | Curved glass forming method, curved glass and glass product |
| CN113741098A (en) * | 2021-11-04 | 2021-12-03 | 拓米(成都)应用技术研究院有限公司 | UTG-QD type MINI-LED board and application, preparation method and optical framework thereof |
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| CN113402160A (en) * | 2020-03-17 | 2021-09-17 | 宁波江东丰汇锦瑞物联网科技有限公司 | Processing method of curved glass with complex shape and curved glass |
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| CN101321443A (en) * | 2008-07-04 | 2008-12-10 | 福州高意通讯有限公司 | Production method of non-conventional glass as outer casing, and its application in electronic product |
| KR101258403B1 (en) * | 2011-12-09 | 2013-04-30 | 로체 시스템즈(주) | Method for cutting tempered glass substrate |
| US9815730B2 (en) * | 2013-12-17 | 2017-11-14 | Corning Incorporated | Processing 3D shaped transparent brittle substrate |
| CN106746525A (en) * | 2016-11-24 | 2017-05-31 | 东莞市圆美精密电子有限公司 | A kind of manufacture method of hot bending 3D glass white tiles |
| CN107056027B (en) * | 2017-03-06 | 2019-11-19 | 瑞声科技(新加坡)有限公司 | The processing method and electronic equipment of 3D glass product |
| CN109455906B (en) * | 2017-09-06 | 2022-12-13 | Ａｇｃ株式会社 | 3D cover glass, mold for molding same, and method for manufacturing 3D cover glass |
| CN208250154U (en) * | 2018-04-24 | 2018-12-18 | 湖南三兴精密工业股份有限公司 | A kind of 3D glass heat suction mold |
| CN109095786A (en) * | 2018-11-06 | 2018-12-28 | 江苏优视光学科技股份有限公司 | A kind of novel mobile phone glass |
| CN109437524A (en) * | 2018-12-17 | 2019-03-08 | 苏州胜禹材料科技股份有限公司 | Not equal heavy sheet glass 3D hot-bending machine and 3D glass forming method |
| CN109824249A (en) * | 2019-04-04 | 2019-05-31 | 拓米(成都)应用技术研究院有限公司 | A kind of 3D glass making procedures |
-
2019
- 2019-04-04 CN CN201910270423.8A patent/CN109824249A/en active Pending
- 2019-07-01 CN CN201910585521.0A patent/CN110272187B/en active Active
- 2019-07-31 CN CN201921229977.5U patent/CN210974401U/en active Active
- 2019-07-31 WO PCT/CN2019/098561 patent/WO2020199438A1/en active Application Filing
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110272187A (en) * | 2019-04-04 | 2019-09-24 | 拓米(成都)应用技术研究院有限公司 | A kind of 3D glass and preparation method thereof |
| WO2020199438A1 (en) * | 2019-04-04 | 2020-10-08 | 拓米(成都)应用技术研究院有限公司 | 3d glass and manufacturing method therefor, mold and 3d glass blank |
| CN110395887A (en) * | 2019-08-05 | 2019-11-01 | 重庆两江联创电子有限公司 | Bend glass forming method |
| CN110950525A (en) * | 2019-12-10 | 2020-04-03 | Oppo广东移动通信有限公司 | Double-curved glass, preparation method thereof and electronic equipment |
| CN110950525B (en) * | 2019-12-10 | 2022-10-25 | Oppo广东移动通信有限公司 | Double-curved glass, preparation method thereof and electronic equipment |
| CN113121126A (en) * | 2019-12-31 | 2021-07-16 | 上海雷佳科学仪器有限公司 | Manufacturing process of novel high borosilicate chromatography expansion cylinder |
| CN113402159A (en) * | 2020-03-17 | 2021-09-17 | 烟台科慧科技服务有限公司 | Curved glass forming method, curved glass and glass product |
| CN112358170A (en) * | 2020-11-12 | 2021-02-12 | 科立视材料科技有限公司 | 3D glass forming device and preparation method of 3D glass |
| CN112429948A (en) * | 2020-12-02 | 2021-03-02 | 万津实业(赤壁)有限公司 | Curved glass processing method |
| CN112520995A (en) * | 2020-12-15 | 2021-03-19 | 深圳沃特佳科技有限公司 | Laser-assisted CNC (computerized numerical control) efficiency improving technology |
| CN113741098A (en) * | 2021-11-04 | 2021-12-03 | 拓米(成都)应用技术研究院有限公司 | UTG-QD type MINI-LED board and application, preparation method and optical framework thereof |
| CN113741098B (en) * | 2021-11-04 | 2022-03-01 | 拓米(成都)应用技术研究院有限公司 | UTG-QD type MINI-LED board and application, preparation method and optical framework thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN210974401U (en) | 2020-07-10 |
| CN110272187B (en) | 2020-07-10 |
| CN110272187A (en) | 2019-09-24 |
| WO2020199438A1 (en) | 2020-10-08 |
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Application publication date: 20190531 |