CN112051688A - Backlight source for AR glasses - Google Patents
Backlight source for AR glasses Download PDFInfo
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- CN112051688A CN112051688A CN202010955793.8A CN202010955793A CN112051688A CN 112051688 A CN112051688 A CN 112051688A CN 202010955793 A CN202010955793 A CN 202010955793A CN 112051688 A CN112051688 A CN 112051688A
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- winding displacement
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- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/017—Head mounted
- G02B27/0172—Head mounted characterised by optical features
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Planar Illumination Modules (AREA)
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
Abstract
The utility model relates to a backlight for AR glasses belongs to LCD technical field, including casing and winding displacement, the one end that the casing was kept away from to the winding displacement is provided with the golden finger, the breach that supplies the winding displacement to wear out is seted up to the lateral wall of casing, the mounting groove with the breach intercommunication is seted up to the diapire of casing, the diapire of mounting groove is provided with the first sealing member that is used for with the winding displacement butt, be provided with the second sealing member that is used for keeping away from the lateral wall conflict of first sealing member with the winding displacement on the casing. The flat cable penetrates out of the shell from the notch, the first sealing element and the second sealing element are respectively abutted against the upper side wall and the lower side wall of the flat cable, the gap between the flat cable and the notch is reduced, the sealing effect is improved, the light leakage of a backlight source is effectively reduced, and the quality of the backlight source is improved; and the first sealing element and the second sealing element are matched with the notch, so that the flat cable is reinforced.
Description
Technical Field
The application relates to the technical field of liquid crystal displays, in particular to a backlight source for AR glasses.
Background
The backlight source is a light source located behind a Liquid Crystal Display (LCD), and its luminous effect will directly affect the visual effect of the liquid crystal display module (LCM). The liquid crystal display does not emit light itself, and it displays a pattern or its result of modulating light.
The backlight is provided with the winding displacement, and the lateral wall of backlight is provided with the breach, and the winding displacement is derived from the breach, has the golden finger at the tip of winding displacement for weld with the PCB board, realize the electric connection of backlight and PCB board.
However, light leakage at the notches is easy to occur, which affects the quality of the backlight.
Disclosure of Invention
In order to reduce backlight light leakage, the application provides a backlight for AR glasses.
The application provides a backlight for AR glasses adopts following technical scheme:
the utility model provides a backlight for AR glasses, includes casing and winding displacement, and the one end that the casing was kept away from to the winding displacement is provided with the golden finger, the breach that supplies the winding displacement to wear out is seted up to the lateral wall of casing, the mounting groove with the breach intercommunication is seted up to the diapire of casing, the diapire of mounting groove is provided with the first sealing member that is used for with the winding displacement butt, be provided with the second sealing member that is used for keeping away from the lateral wall conflict of first sealing member with the winding displacement on the casing.
By adopting the technical scheme, the flat cable penetrates out of the shell from the notch, the first sealing element and the second sealing element are respectively abutted against the upper side wall and the lower side wall of the flat cable, the gap between the flat cable and the notch is reduced, the sealing effect is improved, the light leakage of a backlight source is effectively reduced, and the quality of the backlight source is improved; and the first sealing element and the second sealing element are matched with the notch, so that the flat cable is reinforced.
Preferably: the first sealing element comprises a first sealing strip, the bottom wall of the mounting groove is provided with an embedded groove along the width direction of the flat cable, and the first sealing strip is embedded in the embedded groove.
Through adopting above-mentioned technical scheme, inlay the first sealing strip and establish in the groove is established to the inlay, guarantees the stability of first sealing strip position, prevents that first sealing strip from shifting.
Preferably: inlay and establish the groove and seted up the groove of stepping down along the cell wall at its length direction both ends, first sealing strip includes installation department and butt portion, the installation department inlays to be located and inlays and establish the inslot, the butt portion is kept away from the one end of installation department and is contradicted with the winding displacement, set up tangible variable chamber in the installation department, be provided with the clearance between the both ends of installation department and the diapire in groove of stepping down.
By adopting the technical scheme, when the first sealing strip is installed, the installation part is embedded in the embedding groove, so that the first sealing strip is prevented from being easily separated; when the first sealing strip is extruded, the mounting part deforms, so that the first sealing strip can generate certain elastic deformation capacity, and the sealing effect on the flat cable is improved; and the setting of deformation chamber is convenient for the installation department to take place elastic deformation.
Preferably: a plurality of first wire grooves are formed in the side wall where the abutting portion abuts against the flat cable.
Through adopting above-mentioned technical scheme, because of laying the copper line that is used for being connected with golden finger electricity on the winding displacement, and the copper line is outstanding to be arranged on the winding displacement surface, and the first wire casing and the copper line on the butt portion match, and the copper line is located first wire casing for butt portion and winding displacement contact are inseparabler, improve sealed effect effectively, reduce the light leak.
Preferably: the second sealing member includes installation piece and second sealing strip, the installation piece is fixed to be set up in the mounting groove, the spout has been seted up in the installation piece, the second sealing strip slides and sets up in the spout, be provided with in the spout and be used for ordering about the second sealing strip and support tight elastic component with the winding displacement.
Through adopting above-mentioned technical scheme, the elasticity of elastic component orders about the second sealing strip and supports tightly with the winding displacement surface, if in-process at the transportation bumps or shakes, the second sealing strip can slide along the spout, compresses the elastic component, plays the shock-resistant effect of energy-absorbing, plays the effect of protection winding displacement, prevents to a certain extent that the winding displacement from taking place the fracture.
Preferably: the mounting structure is characterized in that a positioning block is fixedly arranged at one end of the mounting block, a fixing groove matched with the positioning block is formed in the bottom wall of the shell, a threaded hole is formed in the bottom wall of the fixing groove, and a screw in threaded connection with the threaded hole is arranged on the positioning block in a penetrating mode.
By adopting the technical scheme, during installation, the installation block is embedded in the installation groove, the positioning block is embedded in the fixing groove, and then the screw is screwed down, so that the installation block is convenient to install; and can install the installation piece in the mounting groove again after backlight production is accomplished, realize sealing and consolidating the winding displacement.
Preferably: the lateral wall of mounting groove has seted up the guide way along vertical direction, the fixed guide block of being connected that slides with the guide way that is provided with on the installation piece.
Through adopting above-mentioned technical scheme, the guide way cooperates with the guide block, plays the effect to the installation piece location, prevents effectively that the one end that the locating piece was kept away from to the installation piece warp because of the atress inequality.
Preferably: the both ends of casing are all fixed and are provided with the otic placode, the constant head tank has been seted up on the otic placode, the through-hole that runs through the otic placode is seted up to the diapire of constant head tank.
Through adopting above-mentioned technical scheme, pass the through-hole through the bolt and can realize fixed the installation of casing, and the setting of constant head tank plays the purpose that holds the bolt head, avoids the outstanding otic placode of bolt head.
Preferably: the notch department of constant head tank is provided with the inclined plane, the inclined plane sets up towards the middle part slope of constant head tank.
Through adopting above-mentioned technical scheme, the effect to the bolt direction is played in the setting of inclined plane, during the installation, in being convenient for the bolt inserts the through-hole smoothly, improves the installation effectiveness.
In summary, the present application includes at least one of the following beneficial technical effects:
1. the flat cable penetrates out of the shell from the notch, the first sealing element and the second sealing element are respectively abutted against the upper side wall and the lower side wall of the flat cable, the gap between the flat cable and the notch is reduced, the sealing effect is improved, the light leakage of a backlight source is effectively reduced, and the quality of the backlight source is improved; the first sealing element and the second sealing element are matched with the notch, so that the flat cable is reinforced;
2. when the first sealing strip is installed, the installation part is embedded in the embedding groove, so that the first sealing strip is prevented from being easily separated; when the first sealing strip is extruded, the mounting part deforms, so that the first sealing strip can generate certain elastic deformation capacity, and the sealing effect on the flat cable is improved; the arrangement of the deformation cavity is convenient for the elastic deformation of the mounting part;
3. because of laid the copper line that is used for being connected with the golden finger electricity on the winding displacement, and the copper line outstanding winding displacement surface, and the first wire casing and the copper line on the butt portion match, and the copper line is located first wire casing for butt portion is inseparabler with the winding displacement contact, improves sealed effect effectively, reduces the light leak.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic structural diagram of another perspective of an embodiment of the present application;
fig. 3 is an exploded view of an embodiment of the present application.
Description of reference numerals: 1. a housing; 11. fixing grooves; 111. a threaded hole; 12. an ear plate; 121. positioning a groove; 1211. a through hole; 1212. an inclined surface; 2. arranging wires; 21. a golden finger; 3. mounting grooves; 31. embedding a groove; 311. a yielding groove; 32. a guide groove; 4. a first seal strip; 41. an installation part; 411. a deformation chamber; 42. an abutting portion; 421. a first wire slot; 51. mounting blocks; 511. a chute; 512. positioning blocks; 5121. a screw; 513. a guide block; 52. a second seal strip; 521. a groove; 6. an elastic member; 7. a rubber pad; 71. a dovetail block.
Detailed Description
The present application is described in further detail below with reference to figures 1-3.
The embodiment of the application discloses backlight source for AR glasses.
Referring to fig. 1, the backlight source for the AR glasses comprises a shell 1 and a flat cable 2, wherein a golden finger 21 is arranged at one end of the flat cable 2, which is far away from the shell 1, a plurality of copper wires electrically connected with the golden finger 21 are arranged on the flat cable 2, and the copper wires protrude out of the upper surface and the lower surface of the flat cable 2.
Referring to fig. 1, two ends of the casing 1 are fixedly provided with ear plates 12, the thickness of the ear plates 12 is smaller than that of the casing 1, the ear plates 12 are provided with positioning grooves 121, and the bottom walls of the positioning grooves 121 are provided with through holes 1211 penetrating through the ear plates 12. The notch of the positioning groove 121 is provided with an inclined surface 1212, and the inclined surface 1212 is inclined toward the middle of the positioning groove 121.
The bolt passes through the through hole 1211 to fix the housing 1, and the positioning groove 121 is arranged to accommodate the bolt head, so as to prevent the bolt head from protruding out of the ear plate 12. The inclined surface 1212 serves to guide the bolt, so that the bolt can be easily inserted into the through hole 1211 during installation, thereby improving installation efficiency.
Referring to fig. 2 and 3, a notch for the flat cable 2 to pass through is formed in the side wall of the housing 1, and an installation groove 3 communicated with the notch is formed in the bottom wall of the housing 1. The diapire of mounting groove 3 is provided with the first sealing member that is used for with winding displacement 2 butt, and first sealing member includes first sealing strip 4, and first sealing strip 4 adopts rubber to make.
Referring to fig. 3, an embedding groove 31 is formed in the bottom wall of the mounting groove 3 along the width direction of the flat cable 2, and the first sealing strip 4 is embedded in the embedding groove 31. The width of the first sealing tape 4 is not less than the width of the flat cable 2.
Referring to fig. 3, the groove walls of the embedding groove 31 at both ends in the length direction are provided with receding grooves 311, the first seal strip 4 includes a mounting portion 41 and a butting portion 42, the mounting portion 41 is embedded in the embedding groove 31, and the length of the mounting portion 41 is greater than that of the embedding groove 31, so as to prevent the mounting portion 41 from being easily separated from the embedding groove 31. The mounting portion 41 has a deformation chamber 411 therein, and a gap is provided between both ends of the mounting portion 41 and the bottom wall of the relief groove 311.
Referring to fig. 3, one end of the contact portion 42 away from the mounting portion 41 abuts against the flat cable 2, and a side wall of the contact portion 42 away from the mounting portion 41 is a flat surface. The abutting portion 42 is provided with a plurality of first wire grooves 421 on the side wall abutting against the flat cable 2, the number of the first wire grooves 421 corresponds to the number of the copper wires on the flat cable 2, the distance between the adjacent first wire grooves 421 is equal to the distance between the adjacent copper wires, and the width of the first wire grooves 421 is matched with the copper wires.
Because of laid the copper line that is used for being connected with golden finger 21 electricity on winding displacement 2, and the copper line is outstanding 2 surfaces of winding displacement, and first wire casing 421 on the butt portion 42 matches with the copper line, and the copper line is located first wire casing 421 for butt portion 42 is inseparabler with the contact of winding displacement 2, improves sealed effect effectively, reduces the light leak.
When the first weather strip 4 is installed, the installation part 41 is embedded in the embedding groove 31, so that the first weather strip 4 is prevented from being easily separated; when the first sealing strip 4 is extruded, the mounting part 41 deforms, so that the first sealing strip 4 can generate certain elastic deformation capacity, and the sealing effect on the flat cable 2 is improved; and the deformation chamber 411 is provided to facilitate the elastic deformation of the mounting portion 41.
Referring to fig. 3, the housing 1 is provided with a second sealing member for abutting against a side wall of the flat cable 2 away from the first sealing member, the second sealing member includes a mounting block 51 and a second sealing strip 52, and the second sealing strip 52 is made of rubber. The bottom wall of the second sealing strip 52 is provided with a groove 521, and the groove 521 is matched with the copper wire.
Referring to fig. 3, the mounting block 51 is fixedly disposed in the mounting groove 3, a sliding groove 511 is formed in the mounting block 51, the sliding groove 511 penetrates through the bottom wall of the mounting block 51, and the bottom wall of the mounting block 51 is a surface close to the bottom wall of the mounting groove 3. The second sealing strip 52 is slidably disposed in the sliding slot 511, and the second sealing strip 52 is adapted to the sliding slot 511.
Referring to fig. 3, an elastic member 6 for urging the second sealing strip 52 against the flat cable 2 is disposed in the sliding slot 511, the elastic member 6 is a spring, one end of the spring is fixedly connected to the bottom wall of the sliding slot 511, and the other end of the spring is fixedly connected to the second sealing strip 52.
The elasticity of the elastic part 6 drives the second sealing strip 52 to tightly abut against the surface of the flat cable 2, if collision or vibration occurs in the transportation process, the second sealing strip 52 can slide along the sliding groove 511 to compress the elastic part 6, so that the energy absorption and shock resistance effects are achieved, the flat cable 2 is protected, and the flat cable 2 is prevented from being broken to a certain extent.
Referring to fig. 3, a positioning block 512 is fixedly disposed at one end of the mounting block 51, a fixing groove 11 adapted to the positioning block 512 is formed in the bottom wall of the housing 1, and the depth of the fixing groove 11 is not less than the height of the positioning block 512. The bottom wall of the fixing groove 11 is provided with a threaded hole 111, and the fixing block is provided with a screw 5121 in threaded connection with the threaded hole 111.
During installation, the installation block 51 is embedded in the installation groove 3, the positioning block 512 is embedded in the fixing groove 11, and then the screw 5121 is screwed, so that the installation of the installation block 51 is convenient; and after the backlight production is finished, the mounting block 51 is mounted in the mounting groove 3, so that the flat cable 2 is sealed and reinforced.
In addition, referring to fig. 3, a rubber pad 7 is disposed on a side wall of the mounting groove 3 away from the fixing groove 11, a dovetail block 71 is fixedly disposed on a side wall of the rubber pad 7 away from the fixing groove 11, a dovetail groove is vertically formed on a side wall of the mounting groove 3 away from the fixing groove 11, and the dovetail block 71 is connected with the dovetail groove in a sliding manner. The rubber pad 7 is abutted against one side of the flat cable 2, and plays a role in positioning the flat cable 2.
Referring to fig. 3, the side wall of the mounting groove 3 is provided with two guide grooves 32 along the vertical direction, and the mounting block 51 is fixedly provided with a guide block 513 connected with the guide grooves 32 in a sliding manner. The guide groove 32 cooperates with the guide block 513 to position the mounting block 51, thereby effectively preventing the end of the mounting block 51 away from the positioning block 512 from being deformed due to uneven stress.
The implementation principle of the embodiment of the application is as follows: the flat cable 2 penetrates out of the shell 1 from the notch, and the first sealing element and the second sealing element are respectively abutted against the upper side wall and the lower side wall of the flat cable 2, so that the gap between the flat cable 2 and the notch is reduced, the sealing effect is improved, the light leakage of a backlight source is effectively reduced, and the quality of the backlight source is improved; and the first sealing element and the second sealing element are matched with the notch, so that the flat cable 2 is reinforced.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (9)
1. The utility model provides a backlight for AR glasses, includes casing (1) and winding displacement (2), and the one end that casing (1) was kept away from in winding displacement (2) is provided with golden finger (21), its characterized in that: the utility model discloses a flat cable assembly, including casing (1), mounting groove (3) that supply winding displacement (2) to wear out are seted up to the lateral wall of casing (1), the mounting groove (3) with the breach intercommunication are seted up to the diapire of casing (1), the diapire of mounting groove (3) is provided with the first sealing member that is used for with winding displacement (2) butt, be provided with on casing (1) and be used for keeping away from the second sealing member that the lateral wall of first sealing member contradicted with winding displacement (2).
2. The backlight for AR glasses according to claim 1, wherein: first sealing member includes first sealing strip (4), the diapire of mounting groove (3) has been seted up along the width direction of winding displacement (2) and has been inlayed and establish groove (31), first sealing strip (4) are inlayed and are located and inlay and establish in groove (31).
3. The backlight for AR glasses according to claim 2, wherein: inlay and establish groove (31) and seted up groove of stepping down (311) along the cell wall at its length direction both ends, first sealing strip (4) are including installation department (41) and butt portion (42), installation department (41) are inlayed and are located and inlay and establish in groove (31), butt portion (42) are kept away from the one end and the winding displacement (2) conflict of installation department (41), set up tangible variable chamber (411) in installation department (41), be provided with the clearance between the both ends of installation department (41) and the diapire of groove of stepping down (311).
4. The backlight for AR glasses according to claim 3, wherein: the side wall of the abutting part (42) abutting against the flat cable (2) is provided with a plurality of first wire grooves (421).
5. The backlight for AR glasses according to claim 1, wherein: the second sealing member includes installation piece (51) and second sealing strip (52), installation piece (51) are fixed to be set up in mounting groove (3), spout (511) have been seted up in installation piece (51), second sealing strip (52) slide and set up in spout (511), be provided with in spout (511) and be used for driving about second sealing strip (52) and winding displacement (2) support elastic component (6) tight.
6. The backlight source for AR glasses according to claim 5, wherein: the mounting structure is characterized in that a positioning block (512) is fixedly arranged at one end of the mounting block (51), a fixing groove (11) matched with the positioning block (512) is formed in the bottom wall of the shell (1), a threaded hole (111) is formed in the bottom wall of the fixing groove (11), and a screw (5121) in threaded connection with the threaded hole (111) penetrates through the positioning block (512).
7. The backlight for AR glasses according to claim 6, wherein: the lateral wall of mounting groove (3) has seted up guide way (32) along vertical direction, fixed being provided with guide block (513) that slide with guide way (32) and be connected on installation piece (51).
8. The backlight for AR glasses according to claim 1, wherein: both ends of casing (1) all are fixed and are provided with otic placode (12), seted up constant head tank (121) on otic placode (12), through-hole (1211) of running through otic placode (12) are seted up to the diapire of constant head tank (121).
9. The backlight for AR glasses according to claim 8, wherein: notch department of constant head tank (121) is provided with inclined plane (1212), inclined plane (1212) sets up towards the middle part slope of constant head tank (121).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955793.8A CN112051688B (en) | 2020-09-11 | 2020-09-11 | Backlight source for AR glasses |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010955793.8A CN112051688B (en) | 2020-09-11 | 2020-09-11 | Backlight source for AR glasses |
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| Publication Number | Publication Date |
|---|---|
| CN112051688A true CN112051688A (en) | 2020-12-08 |
| CN112051688B CN112051688B (en) | 2022-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010955793.8A Active CN112051688B (en) | 2020-09-11 | 2020-09-11 | Backlight source for AR glasses |
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Citations (7)
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| CN202992940U (en) * | 2013-01-10 | 2013-06-12 | 东莞市新东方光电技术有限公司 | LED (light emitting diode) backlight source structure |
| CN203374790U (en) * | 2013-07-10 | 2014-01-01 | 中兴通讯股份有限公司 | Sealing structure |
| CN204479874U (en) * | 2015-03-25 | 2015-07-15 | 深圳市天亿富电子有限公司 | A kind of novel liquid crystal display module |
| CN104949011A (en) * | 2015-07-07 | 2015-09-30 | 京东方光科技有限公司 | Backlight module and display device |
| CN207114984U (en) * | 2017-08-29 | 2018-03-16 | 信利半导体有限公司 | The FPC and vehicle-mounted backlight of a kind of vehicle-mounted backlight |
| US20190163014A1 (en) * | 2017-11-24 | 2019-05-30 | Japan Display Inc. | Backlight device and liquid crystal display device |
| CN110456567A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | The golden finger break structure of backlight |
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2020
- 2020-09-11 CN CN202010955793.8A patent/CN112051688B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202992940U (en) * | 2013-01-10 | 2013-06-12 | 东莞市新东方光电技术有限公司 | LED (light emitting diode) backlight source structure |
| CN203374790U (en) * | 2013-07-10 | 2014-01-01 | 中兴通讯股份有限公司 | Sealing structure |
| CN204479874U (en) * | 2015-03-25 | 2015-07-15 | 深圳市天亿富电子有限公司 | A kind of novel liquid crystal display module |
| CN104949011A (en) * | 2015-07-07 | 2015-09-30 | 京东方光科技有限公司 | Backlight module and display device |
| CN207114984U (en) * | 2017-08-29 | 2018-03-16 | 信利半导体有限公司 | The FPC and vehicle-mounted backlight of a kind of vehicle-mounted backlight |
| US20190163014A1 (en) * | 2017-11-24 | 2019-05-30 | Japan Display Inc. | Backlight device and liquid crystal display device |
| CN110456567A (en) * | 2019-08-06 | 2019-11-15 | 深圳市利航电子有限公司 | The golden finger break structure of backlight |
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| Publication number | Publication date |
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| CN112051688B (en) | 2022-09-16 |
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Inventor after: Mao Qun Inventor after: Wu Chuanyu Inventor after: Yu Lan Inventor after: Huang Shengni Inventor after: Wu Chuanhang Inventor before: Wu Chuanhang Inventor before: Huang Shengni Inventor before: Wu Chuanyu Inventor before: Yu Lan Inventor before: Mao Qun |
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