CN113950177B - Flexible photomedical device - Google Patents
Flexible photomedical device Download PDFInfo
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- CN113950177B CN113950177B CN202111181860.6A CN202111181860A CN113950177B CN 113950177 B CN113950177 B CN 113950177B CN 202111181860 A CN202111181860 A CN 202111181860A CN 113950177 B CN113950177 B CN 113950177B
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- Prior art keywords
- light
- lithium battery
- flexible
- photomedical
- emitting
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims abstract description 176
- 229910052744 lithium Inorganic materials 0.000 claims abstract description 176
- 239000000758 substrate Substances 0.000 claims abstract description 58
- 238000004806 packaging method and process Methods 0.000 claims abstract description 14
- 230000006698 induction Effects 0.000 claims description 65
- 238000007600 charging Methods 0.000 claims description 52
- 238000005538 encapsulation Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 239000002041 carbon nanotube Substances 0.000 claims description 3
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 229910021389 graphene Inorganic materials 0.000 claims description 3
- 229910001338 liquidmetal Inorganic materials 0.000 claims description 3
- 229910052709 silver Inorganic materials 0.000 claims description 3
- 230000001939 inductive effect Effects 0.000 claims description 2
- 230000003245 working effect Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 45
- 238000000034 method Methods 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 3
- 230000001070 adhesive effect Effects 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000005240 physical vapour deposition Methods 0.000 description 3
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 3
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920001971 elastomer Polymers 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000001126 phototherapy Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- 229910000846 In alloy Inorganic materials 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229920003171 Poly (ethylene oxide) Polymers 0.000 description 1
- -1 Polydimethylsiloxane Polymers 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 239000006230 acetylene black Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910000428 cobalt oxide Inorganic materials 0.000 description 1
- IVMYJDGYRUAWML-UHFFFAOYSA-N cobalt(ii) oxide Chemical compound [Co]=O IVMYJDGYRUAWML-UHFFFAOYSA-N 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000002274 desiccant Substances 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 239000011245 gel electrolyte Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000002346 layers by function Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- MHCFAGZWMAWTNR-UHFFFAOYSA-M lithium perchlorate Chemical compound [Li+].[O-]Cl(=O)(=O)=O MHCFAGZWMAWTNR-UHFFFAOYSA-M 0.000 description 1
- 229910001486 lithium perchlorate Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/02—Details
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N5/0601—Apparatus for use inside the body
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N5/00—Radiation therapy
- A61N5/06—Radiation therapy using light
- A61N2005/0632—Constructional aspects of the apparatus
Landscapes
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Pathology (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The embodiment of the invention discloses a flexible photo-medical device, which comprises: a flexible substrate; a plurality of light emitting structures and a plurality of lithium batteries arranged on the same side of the flexible substrate; the number of the lithium batteries connected with at least one light-emitting structure in the light-emitting structures is more than one, and/or the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is more than one; the lithium battery is used for supplying power to the light-emitting structure; and the packaging layer is used for packaging the light-emitting structure and the lithium battery. The technical scheme provided by the embodiment of the invention can improve the luminous brightness in the unit area of the photomedical device and ensure the working effect of the photomedical device.
Description
Technical Field
The embodiment of the invention relates to the technical field of photomedical devices, in particular to a flexible photomedical device.
Background
With the improvement of the living standard of mass substances of people, the demands of people on health are higher and higher, and the illumination technology is loved by consumers as a safe and good way, so that the illumination is widely applied in photomedical treatment.
Problems with current wearable biomedical devices include: photomedical devices, while flexible and bendable, are less stretchable; and the photomedical device has certain pencil, and the pencil is longer, can't portable to need integrated various accessories, it is less to cause actual luminous region.
Disclosure of Invention
The embodiment of the invention provides a flexible photo-medical device, which is used for improving the luminous brightness in a unit area of the photo-medical device and ensuring the working effect of the device.
The embodiment of the invention provides a flexible optical medical device, which comprises:
a flexible substrate;
A plurality of light emitting structures and a plurality of lithium batteries arranged on the same side of the flexible substrate; the number of the lithium batteries connected with at least one light-emitting structure in the light-emitting structures is greater than one, and/or the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is greater than one; the lithium battery is used for supplying power to the light-emitting structure;
and the packaging layer is used for packaging the light-emitting structure and the lithium battery.
Optionally, the number of the light emitting structures is greater than the number of the lithium batteries.
Optionally, the number of the light-emitting structures connected with each lithium battery is greater than one.
Optionally, the light emitting structure and the lithium battery are horizontally arranged on the flexible substrate; the material of the flexible substrate comprises an elastic polymeric material;
the number of the light-emitting structures connected with each lithium battery comprises at least four, and at least four light-emitting structures are arranged around the lithium battery; at least part of the light-emitting structures are arranged in a grid arrangement mode, and each grid area comprises four light-emitting structures connected with different lithium batteries.
Optionally, the light emitting structure is electrically connected with the lithium battery through a stretchable connection lead.
Optionally, the stretchable connecting leads comprise elastic wires formed by filling liquid metal in polymer microtubes, or by curved wires made of Ag, al, au, cu, carbon nanotubes or graphene.
Optionally, the flexible photomedical device further comprises a charging induction structure, wherein the charging induction structure is electrically connected with the lithium battery, and the charging induction structure is used for generating a charging current to charge the lithium battery when the excitation current of the external transmitting coil is induced; the charging induction structure is electrically connected with the lithium battery through a stretchable connecting lead.
Optionally, the charging induction structure includes:
An induction coil for generating an induction current when an excitation current of an external transmitting coil is induced;
The rectification structure is respectively connected with the induction coil and the lithium battery; the rectification structure is used for rectifying the induction current generated by the induction coil into direct current and providing the rectified induction current for the lithium battery;
the rectification structure is arranged on the flexible substrate, and the encapsulation layer covers the rectification structure; or the encapsulation layer comprises a through hole, and the rectifying structure is positioned in the through hole.
Optionally, the number of the rectifying structures is multiple, the number of lithium batteries connected with at least one rectifying structure in the rectifying structures is greater than one, and/or the number of the rectifying structures connected with at least one lithium battery in the lithium batteries is greater than one.
Optionally, the charging induction structure and the lithium battery are horizontally arranged on the flexible substrate; or the charging induction structure and the lithium battery are stacked on the flexible substrate.
The embodiment of the invention provides a flexible optical medical device, which comprises: a flexible substrate; a plurality of light emitting structures and a plurality of lithium batteries arranged on the same side of the flexible substrate; the number of the lithium batteries connected with at least one light-emitting structure in the light-emitting structures is more than one, and/or the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is more than one; the lithium battery is used for supplying power to the light-emitting structure; and the packaging layer is used for packaging the light-emitting structure and the lithium battery. According to the technical scheme provided by the embodiment of the invention, the plurality of light-emitting structures and the plurality of lithium batteries are arranged on the same side of the flexible substrate, the number of the lithium batteries connected with at least one light-emitting structure in the light-emitting structures is more than one, and the plurality of lithium batteries are connected in series to supply power to the light-emitting structure together, so that the voltage supplied to the light-emitting structure can be increased, the brightness of the light-emitting structure is improved, the light-emitting brightness in the area where the light-emitting structure is positioned is improved, and the light-emitting brightness in the unit area of the photo-medical device is further improved; the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is more than one; the part of lithium batteries in the photo-medical device in the prior art are replaced by the light-emitting structures, so that the number of the light-emitting structures connected by the lithium batteries is larger than one, the number of the light-emitting structures in a unit area is increased, the area of a light-emitting area of the photo-medical device can be increased, the area occupied by a light source is increased, the working effect of the photo-medical device is ensured, and the photo-medical device is suitable for large-area photo-therapy.
Drawings
FIG. 1 is a top view of a flexible photomedical device structure provided in accordance with an embodiment of the invention;
FIG. 2 is a cross-sectional view taken along line AA' of FIG. 1;
FIG. 3 is a top view of a prior art flexible photomedical device structure;
FIG. 4 is a top view of another flexible photomedical device structure provided by an embodiment of the invention;
FIG. 5 is a cross-sectional view of a flexible photomedical device according to an embodiment of the invention;
FIG. 6 is a charging circuit diagram according to an embodiment of the present invention;
Fig. 7 is a schematic structural diagram of a mobile phone for wirelessly charging a flexible photomedical device according to an embodiment of the present invention;
FIG. 8 is a cross-sectional view of another flexible photomedical device provided by an embodiment of the invention;
FIG. 9 is a cross-sectional view of another flexible photomedical device provided by an embodiment of the invention;
fig. 10 is a cross-sectional view of another embodiment of a flexible photomedical device according to the invention.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
An embodiment of the present invention provides a flexible photomedical device, fig. 1 is a top view of a structure of the flexible photomedical device provided by the embodiment of the invention, fig. 2 is a cross-sectional view along line AA' of fig. 1, and referring to fig. 1-2, the flexible photomedical device includes:
A flexible substrate 10;
a plurality of light emitting structures 40 and a plurality of lithium batteries 30 disposed on the same side of the flexible substrate 10; the number of the lithium batteries 30 connected with at least one light emitting structure 40 in the light emitting structures 40 is more than one, and/or the number of the light emitting structures 40 connected with at least one lithium battery 30 in the lithium batteries 30 is more than one; the lithium battery 30 is used for supplying power to the light emitting structure 40;
And an encapsulation layer 70, wherein the encapsulation layer 70 is used for encapsulating the light emitting structure 40 and the lithium battery 30.
In particular, the flexible substrate 10 may be used to carry the light emitting structure 40 and the lithium battery 30, the material of the flexible substrate 10 comprising an elastic polymer material. The elastic polymer material may be thermoplastic polyurethane elastomer rubber (Thermoplastic polyurethanes, TPU) or solid Polydimethylsiloxane (PDMS), i.e., the flexible substrate 10 is a stretchable substrate. The lithium battery 30 is a secondary battery in which lithium ions are reciprocally intercalated and deintercalated between the positive electrode and the negative electrode and undergo oxidation-reduction reaction, and chemical energy is converted into electric energy during discharging of the battery, so that the electric energy can be converted into chemical energy by charging the battery, thereby realizing energy storage and conversion. The plurality of light-emitting structures 40 and the plurality of lithium batteries 30 are arranged on the same side of the flexible substrate 10, the number of the lithium batteries 30 connected with at least one light-emitting structure 40 in the light-emitting structures 40 is more than one, and the plurality of lithium batteries 30 are connected in series to supply power to the light-emitting structure 40, so that the voltage supplied to the light-emitting structure 40 can be increased, the brightness of the light-emitting structure 40 is improved, the light-emitting brightness in the area where the light-emitting structure 40 is arranged is improved, and the light-emitting brightness in the unit area of the photo-medical device is further improved. By arranging that the number of the light-emitting structures 40 connected with at least one lithium battery 30 in the lithium batteries 30 is larger than one, part of the lithium batteries 30 in the photomedical device in the prior art are replaced by the light-emitting structures 40, so that the number of the light-emitting structures 40 in a unit area is increased, the light-emitting brightness in the unit area of the photomedical device can be improved, and the working effect of the photomedical device is ensured.
The light emitting structure 40 and the lithium battery 30 are sealed by a sealing material, the material of the packaging layer 70 comprises a barrier adhesive, a layer of barrier adhesive is coated on the device, and a drying agent can be doped in the barrier adhesive, so that the damage of moisture to the internal device can be prevented. The encapsulation layer 70 may also be a silicon thin film formed on the surface of the light emitting unit and the lithium battery 30 by physical Vapor Deposition (Physical Vapor Deposition, PVD) or plasma enhanced chemical Vapor Deposition (PLASMA ENHANCED CHEMICAL Vapor Deposition (PECVD). Preferably, the encapsulation layer 70 may be an elastomeric polymer material. The light emitting structure 40 and the lithium battery 30 are packaged by the same packaging layer 70, and the process cost can be reduced. Optionally, a protective layer 80 may also be disposed on a side of the encapsulation layer 70 remote from the flexible substrate 10, and the material of the protective layer 80 may be the same as that of the flexible substrate 10.
In the current wearable optical medical device, the connection relation between the light emitting structure and the battery for supplying power to the light emitting structure is one-to-one correspondence connection; fig. 3 is a top view of a flexible photo-medical device structure provided in the prior art, referring to fig. 3, that is, one light emitting structure 2 is correspondingly connected with one lithium battery 3, and the number of the light emitting structures 2 is the same as the number of the lithium batteries 3; however, the light emitting structure 2 and the lithium battery 3 are connected in one-to-one correspondence, so that the problem of low light emitting brightness in a unit area of the photomedical device is solved, and the working effect of the photomedical device is affected.
According to the flexible photomedical device provided by the embodiment of the invention, the plurality of light-emitting structures and the plurality of lithium batteries are arranged on the same side of the flexible substrate, the number of the lithium batteries connected with at least one light-emitting structure in the light-emitting structures is more than one, and the plurality of lithium batteries are connected in series to supply power to the light-emitting structures together, so that the voltage supplied to the light-emitting structures can be increased, the brightness of the light-emitting structures can be improved, the light-emitting brightness in the area where the light-emitting structures are positioned can be improved, and the light-emitting brightness in the unit area of the photomedical device can be further improved; the number of the light-emitting structures connected with at least one lithium battery is larger than one, part of lithium batteries in the photomedical device in the prior art are replaced by the light-emitting structures, so that the number of the light-emitting structures connected with the lithium batteries is larger than one, the number of the light-emitting structures in a unit area is increased, the area of a light-emitting area of the photomedical device can be increased, the area occupied by a larger lifting light source is ensured, the working effect of the photomedical device is ensured, and the photomedical device is suitable for large-area phototherapy.
Alternatively, referring to fig. 1, the number of the light emitting structures 40 is greater than the number of the lithium batteries 30.
Specifically, in the connection mode that the number of lithium batteries connected with at least one light emitting structure is greater than one in the set light emitting structures and the connection mode that the number of light emitting structures connected with at least one lithium battery in the set lithium batteries is greater than one, the connection mode that the number of light emitting structures connected with at least one lithium battery in the set lithium batteries is greater than one is preferred, so that the total number of light emitting structures 40 is greater than the total number of lithium batteries 30, and the number of light emitting points of the flexible photo-medical device can be increased. Compared with the one-to-one connection mode in the prior art, the technical scheme provided by the embodiment of the invention can also reduce the number of the lithium batteries 30 under the condition of the same number of the light emitting structures 40, and ensure the light emitting quantity of the flexible photo-medical device while reducing the area and the cost of the flexible photo-medical device.
Alternatively, referring to fig. 1, the number of the light emitting structures 40 to which each lithium battery 30 is connected is greater than one.
Specifically, the area where part of the lithium batteries 30 in the prior art are replaced by the light-emitting structure 40, so that the number of the light-emitting structures 40 connected with each lithium battery 30 in the flexible photo-medical device is more than one, the utilization rate of each lithium battery 30 can be further improved, the area of the light-emitting area of the photo-medical device is increased, and the working effect of the photo-medical device is ensured. Illustratively, the flexible photo-medical device in the prior art includes three light emitting structures 40 and three lithium batteries 30, and the light emitting structures 40 are connected to the lithium batteries 30 in a one-to-one correspondence. At present, one of the lithium batteries 30 is replaced by the light-emitting structure 40, so that the two remaining lithium batteries 30 are respectively connected with the two light-emitting structures 40, namely, the number of the light-emitting structures 40 connected with each lithium battery 30 is greater than one, and the number of the light-emitting structures 40 is increased from three to four, thereby improving the number of light-emitting points in the flexible photo-medical device.
Optionally, fig. 4 is a top view of another flexible photomedical device structure provided in an embodiment of the invention, and referring to fig. 4, the light-emitting structures 40 and the lithium batteries 30 are horizontally arranged on the flexible substrate 10, and the number of the light-emitting structures 40 connected to each lithium battery 30 includes four, and the four light-emitting structures 40 are disposed around the lithium battery 30; at least part of the light-emitting structures 40 are arranged in a grid arrangement manner, and each grid area comprises four light-emitting structures 40 connected with different lithium batteries 30.
In particular, the stretchable effect of the flexible photo-medical device can be further achieved by horizontally arranging the light emitting structure 40 and the lithium battery 30 on the flexible substrate 10 formed of an elastic polymer material. The light emitting structures 40 are arranged in a grid arrangement manner, so that the overall integration level of the light emitting structures can be improved. In addition, each grid area comprises four light-emitting structures 40 connected with different lithium batteries 30, so that after the lithium battery 30 connected with one light-emitting structure 40 cannot work normally, other light-emitting structures 40 in the grid area can emit light normally, and therefore the uniformity of light emission of the flexible photo-medical device can be guaranteed. The shape of the light emitting structure 40 may be a circle or a polygon, and the shape of the light emitting structure is exemplarily shown as a quadrangle in fig. 4. Preferably, in order to increase the aperture ratio of the light emitting structure, the shape of the light emitting structure 40 may be provided as a polygon having more sides than four sides, for example, a hexagon or an octagon, etc.
Alternatively, referring to fig. 4, the light emitting structure 40 is electrically connected with the lithium battery 30 through the stretchable connection lead 4.
Specifically, the material of the connecting lead 4 comprises a stretchable material, so that the connecting lead 4 is not easy to break in the pulling process of the flexible photo-medical device. Thereby further improving the stretchability of the flexible optical medical device and simultaneously ensuring the improvement of the yield of the flexible optical medical device. The connection lead 4 may be an elastic conductor formed by filling liquid metal in a polymer microtube, such as liquid gallium indium alloy, so as to make the polymer microtube elastic, thereby realizing extensibility, or a curve-shaped conductor made of Ag, al, au, cu, carbon nanotubes or graphene, and the electrical connection mode in the circuit can be realized through the stretchable connection lead 4.
Alternatively, referring to fig. 2, the lithium battery 30 includes a positive collector 31, a positive electrode 32, an electrolyte layer 33, a negative electrode 34, and a negative collector 35, which are stacked;
The light emitting structure 40 includes an anode 43, a light emitting layer 42, and a cathode 41 which are stacked;
wherein, the positive collector 31 of the lithium battery 30 is connected with the anode 43 of the light emitting structure 40 through the connecting lead 4; the negative electrode collector 35 of the lithium battery 30 is connected with the negative electrode through the connecting lead 4;
Specifically, the structure of the lithium battery 30 includes a positive electrode collector 31, a positive electrode 32, an electrolyte layer 33, a negative electrode 34, and a negative electrode collector 35, which are stacked; the positive and negative electrode collector materials can be aluminum, copper, gold, nickel, platinum and other metals, or can be transparent conductive oxide such as ITO (indium tin oxide). The positive and negative electrodes are composed of cobalt oxide composed of lithium, acetylene black, polyvinylidene fluoride and N-methyl-2-pyrrolidone solvent, and can be formed by transfer printing technology. The material gel electrolyte of the electrolyte layer 33 is composed of a mixture of lithium perchlorate, ethylene carbonate, dimethyl carbonate, and polyethylene oxide. The light emitting structure 40 may be an Organic LIGHT EMITTING Diodes (OLED). The light emitting structure 40 includes an anode 43, a light emitting layer 42, and a cathode 41, which are stacked. An OLED anode 43 is prepared on the flexible substrate 10, a light emitting material may be printed on the anode 43 by means of inkjet printing to form a light emitting layer 42, and a cathode 41 is formed on the light emitting layer 42. At least one functional layer among a Hole Injection Layer (HIL), a Hole Transport Layer (HTL), an Electron Transport Layer (ETL), and an Electron Injection Layer (EIL) may be further included in the light emitting structure 40. A hole injection layer 45 and an electron transport layer 44 are exemplarily depicted in fig. 2. The positive collector electrode 31 of the lithium battery 30 is electrically connected to the anode 43 of the light emitting structure 40 through the connection lead 4, and the negative collector electrode 35 of the lithium battery 30 is electrically connected to the negative electrode of the light emitting structure 40 through the connection lead 4. When a voltage is applied between the anode 43 and the cathode 41, the light emitting layer 42 emits visible light.
The light emitting structure 40 may be circular, rectangular or elliptical, and the specific shape of the light emitting structure 40 may be set according to actual needs. The lithium battery 30 may be circular, rectangular or oval, and the specific shape of the lithium battery 30 may be set according to actual needs. The maximum size of the perpendicular projection of the lithium battery 30 on the flexible substrate 10 is set to be 10um to 5mm.
Optionally, fig. 5 is a structural cross-sectional view of a flexible photomedical device according to an embodiment of the present invention, referring to fig. 5, further including a charging sensing structure 20, where the charging sensing structure 20 is electrically connected to the lithium battery 30, and preferably, the charging sensing structure 20 is electrically connected to the lithium battery 30 through a stretchable connection lead, and the charging sensing structure 20 is configured to generate a charging current to charge the lithium battery 30 when an excitation current of an external transmitting coil is sensed (only a connection relationship among the charging sensing structure 20, the lithium battery 30, and the light emitting structure 40 is exemplarily shown in fig. 5, and the number of the lithium battery 30 and the light emitting structure 40 included in the flexible photomedical device is plural).
Specifically, when the charging induction structure 20 induces the exciting current of the external transmitting coil, the charging current is generated to charge the lithium battery 30, so that the electric quantity of the lithium battery 30 is ensured, and the light-emitting structure 40 can work normally; and the charging induction structure 20 generates charging current to charge the lithium battery 30 when inducting exciting current of the external transmitting coil, and the battery is not required to be charged by using a wire harness, so that wireless charging of the lithium battery 30 is realized, and the portable lithium battery charger has the effect of being convenient to carry.
Optionally, referring to fig. 5, the charging sensing structure 20 includes:
an induction coil 21, the induction coil 21 for generating an induction current when an excitation current of an external transmitting coil is induced;
the rectification structure 22, the rectification structure 22 is connected with the induction coil 21 and the lithium battery 30 respectively; the rectifying structure 22 is used for rectifying the induced current generated by the induction coil 21 into direct current and supplying the rectified induced current to the lithium battery 30.
Specifically, fig. 6 is a charging circuit diagram provided by the embodiment of the present invention, fig. 7 is a schematic structural diagram of a mobile phone for wirelessly charging a flexible photomedical device provided by the embodiment of the present invention, and referring to fig. 6 to fig. 7, a corresponding current excitation I is provided to an internal induction coil 21 through an external coil or the mobile phone 1, and the lithium battery 30 can be charged according to a near field communication (NEAR FIELD Communication, NFC) technology or an electromagnetic induction principle. The induction coil 21 may generate an induction current when sensing an excitation current I of the external transmission coil, thereby realizing the charging of the lithium battery 30. Since the lithium battery 30 requires constant current charging, the induced current generated by the induction coil 21 needs to be rectified by the rectifying structure 22, and the rectifying structure 22 includes, but is not limited to, schottky diode, inductance, and capacitance.
Optionally, the number of the rectifying structures 22 is multiple, the number of the lithium batteries 30 connected to at least one rectifying structure 22 in the rectifying structures 22 is greater than one, and/or the number of the rectifying structures 22 connected to at least one lithium battery 30 in the lithium batteries 30 is greater than one.
Specifically, the number of lithium batteries 30 connected to at least one rectifying structure 22 in the rectifying structures 22 is greater than one, that is, one rectifying structure 22 can charge a plurality of lithium batteries 30; it is also possible that at least one lithium battery 30 of the lithium batteries 30 is connected with more than one rectifying structure 22, i.e. one lithium battery 30 can receive the charging of a plurality of rectifying structures 22. Preferably, a connection mode that the number of the lithium batteries 30 connected by the rectification structures 22 is larger than one is adopted, one rectification structure 22 charges a plurality of lithium batteries 30, each rectification structure 22 can be fully utilized, and the number of the rectification structures 22 is reduced, so that the cost of the photo-medical devices and the area of the photo-medical devices are reduced.
Alternatively, referring to fig. 5, the charge sensing structure 20 and the lithium battery 30 are horizontally arranged on the flexible substrate 10; or fig. 8 is a structural cross-sectional view of another flexible photomedical device provided by an embodiment of the invention, and referring to fig. 8, a charge inducing structure 20 is laminated with a lithium battery 30 on a flexible substrate 10.
Specifically, the charging induction structure 20 and the lithium battery 30 are horizontally arranged on the flexible substrate 10, and the connection between the rectifying structure 22 and the lithium battery 30 can also be connected through a stretchable connection lead, so that the stretchability of the photomedical device is ensured. The charging induction structure 20 and the lithium battery 30 are stacked on the flexible substrate 10, and the connection between the rectifying structure 22 and the lithium battery 30 can be achieved by means of mutual contact between the two. Preferably, referring to fig. 8, the charging sensing structure 20 and the lithium battery 30 are stacked on the flexible substrate 10, that is, the vertical projection of the charging sensing structure 20 on the flexible substrate 10 at least partially overlaps with the disposition projection of the lithium battery 30 on the flexible substrate 10, so that the area occupied by the charging sensing structure 20 can be reduced. Thereby further reducing the area of the photomedical device; or in the case of the same area, the area occupied by the light emitting structure 40 in the photomedical device may be increased. When the perpendicular projection of the charging sensing structure 20 on the flexible substrate 10 completely overlaps with the disposal projection of the lithium battery 30 on the flexible substrate 10, the area occupied by the charging sensing structure 20 is minimized. The charging induction structure 20 and the lithium battery 30 are stacked on the flexible substrate 10, and the charging induction structure 20 and the lithium battery 30 can be connected in a one-to-one correspondence.
Referring to fig. 5 and 8, the rectifying structure 22 may be disposed directly on the flexible substrate 10, and the encapsulation layer 70 covers the rectifying structure 22. Or fig. 9 is a structural cross-sectional view of another flexible photomedical device provided by an embodiment of the invention, and fig. 10 is a structural cross-sectional view of another flexible photomedical device provided by an embodiment of the invention, referring to fig. 9 and 10, the rectifying structure 22 may also be mounted by a surface mounting technique (Surface Mount Technology, SMT) after the packaging layer 70 is completed, a through hole may be reserved in the packaging layer 70 during the preparation process, and the rectifying structure 22 is mounted in the through hole.
Referring to fig. 5 and 9, for the arrangement in which the charging induction structure 20 and the lithium battery 30 are horizontally arranged on the flexible substrate 10, the induction coil 21 in the charging induction structure 20 is disposed on the flexible substrate 10. The rectifying structure 22 in the charging sensing structure 20 may be disposed on the flexible substrate 10 (refer to fig. 5), and the encapsulation layer 70 covers the rectifying structure 22; or the encapsulation layer 70 includes a via in which the rectifying structure 22 is located (see fig. 9).
Specifically, when the induction coil 21 and the rectifying structure 22 in the charging induction structure 20 are both disposed on the flexible substrate 10, the induction coil 21 and the rectifying structure 22 are disposed on the same layer; the rectifying structure 22 may be electrically connected to the positive collector 31 and the negative collector 35 of the lithium battery 30 disposed in the same layer through the connection lead 4. In the case where the rectifying structure 22 is mounted by a surface mounting technique after the package layer 70 is completed, the position of the rectifying structure 22 may be replaced with the pad 23. Input pads and output pads are provided on the flexible substrate 10 (the input pads and output pads are replaced with pads 23 as illustrated in fig. 9). Wherein the input pad is connected to the induction coil 21 and the output pad is connected to the lithium battery 30 (positive collector 31 and negative collector 35). The input of the rectifying structure 22 is connected to the input pad and the output of the rectifying structure 22 is connected to the output pad. The induced current generated by the induction coil 21 flows to the rectifying structure 22 through the input pad, and the rectifying structure 22 rectifies the induced current and provides the rectified induced current to the lithium battery 30 through the output pad, thereby realizing the charging of the lithium battery 30. That is, the induction coil 21 and the bonding pad are arranged in the same layer, the packaging layer 70 can be reserved with a through hole in the preparation process, the rectifying structure 22 is attached in the through hole and is connected with the bonding pad 23 (input bonding pad and output bonding pad) on the flexible substrate 10, so that the rectifying structure 22 rectifies the induction current generated by the induction coil 21 and then provides the rectified induction current for the lithium battery 30 to charge.
Referring to fig. 8 and 10, for the arrangement in which the charging induction structure 20 and the lithium battery 30 are stacked on the flexible substrate 10, the induction coil 21 in the charging induction structure 20 is disposed on the flexible substrate 10. The rectifying structure 22 in the charging sensing structure 20 may be disposed on the flexible substrate 10 (refer to fig. 8), and the encapsulation layer 70 covers the rectifying structure 22; or the encapsulation layer 70 includes a via in which the rectifying structure 22 is located (refer to fig. 10).
Specifically, when the induction coil 21 and the rectifying structure 22 in the charging induction structure 20 are both disposed on the flexible substrate 10, the induction coil 21 and the rectifying structure 22 are disposed on the same layer; the side of the induction coil 21 and the rectifying structure 22 remote from the flexible substrate further comprises a first insulating layer 50; the first insulating layer 50 includes a first landing hole 51 and a second landing hole 52; the lithium battery 30 is located on the side of the first insulating layer 50 remote from the flexible substrate 10; the positive collector 31 of the lithium battery 30 is connected to the rectifying structure 22 through the first overlap hole 51, and the negative collector 35 of the lithium battery 30 is connected to the rectifying structure 22 through the second overlap hole 52. In the case where the rectifying structure 22 is mounted by a surface mounting technique after the package layer 70 is completed, the position of the rectifying structure 22 may be replaced with the pad 23. Input pads and output pads are provided on the flexible substrate 10 (the input pads and output pads are replaced with pads 23 as illustrated in fig. 10). Wherein the input pads are connected to the induction coil 21 and the output pads are connected to the lithium battery 30. The input of the rectifying structure 22 is connected to the input pad and the output of the rectifying structure 22 is connected to the output pad. The induced current generated by the induction coil 21 flows to the rectifying structure 22 through the input pad, and the rectifying structure 22 rectifies the induced current and provides the rectified induced current to the lithium battery 30 through the output pad, thereby realizing the charging of the lithium battery 30. That is, the induction coil 21 and the bonding pad are arranged in the same layer, the packaging layer 70 can be reserved with a through hole in the preparation process, the rectifying structure 22 is attached in the through hole and is connected with the bonding pad 23 (input bonding pad and output bonding pad) on the flexible substrate 10, so that the rectifying structure 22 rectifies the induction current generated by the induction coil 21 and then provides the rectified induction current for the lithium battery 30 to charge.
The rectifying structure is electrically connected with the induction coil and the lithium battery respectively, and the connection mode can be realized through a connection lead wire, a contact or a bonding pad, and can also be connected through other modes, and the details are not repeated here.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (10)
1. A flexible photomedical device, comprising:
a flexible substrate;
a plurality of light emitting structures and a plurality of lithium batteries which are arranged on the same side of the flexible substrate side by side; the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is larger than one; or the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is more than one, and the number of the lithium batteries connected with at least one light-emitting structure in the light-emitting structures is more than one;
The lithium battery is used for supplying power to the light-emitting structure; at least part of the light-emitting structures are arranged in a grid arrangement mode, and each grid area comprises four light-emitting structures connected with different lithium batteries;
and the packaging layer is used for packaging the light-emitting structure and the lithium battery.
2. The flexible photomedical device of claim 1, wherein the number of light emitting structures is greater than the number of lithium batteries.
3. The flexible photomedical device of claim 2, wherein the number of light emitting structures to which each of the lithium batteries is connected is greater than one.
4. The flexible photomedical device of claim 3, wherein the light emitting structure and the lithium battery are horizontally arranged on the flexible substrate; the material of the flexible substrate comprises an elastic polymeric material;
The number of the light-emitting structures connected with each lithium battery comprises at least four, and at least four light-emitting structures are arranged around the lithium batteries.
5. The flexible photomedical device of claim 1, wherein the light emitting structure is electrically connected to the lithium battery through a stretchable connection lead.
6. The flexible photomedical device of claim 5, wherein the stretchable connecting leads comprise elastic wires formed by filling liquid metal in polymeric microtubes or curved wires made of Ag, al, au, cu, carbon nanotubes, or graphene.
7. The flexible photomedical device of claim 1, further comprising a charging induction structure electrically connected to the lithium battery, the charging induction structure for generating a charging current to charge the lithium battery when an excitation current of an external transmitting coil is induced; the charging induction structure is electrically connected with the lithium battery through a stretchable connecting lead.
8. The flexible photomedical device of claim 7, wherein the charge inducing structure comprises:
An induction coil for generating an induction current when an excitation current of an external transmitting coil is induced;
The rectification structure is respectively connected with the induction coil and the lithium battery; the rectification structure is used for rectifying the induction current generated by the induction coil into direct current and providing the rectified induction current for the lithium battery;
the rectification structure is arranged on the flexible substrate, and the encapsulation layer covers the rectification structure; or the encapsulation layer comprises a through hole, and the rectifying structure is positioned in the through hole.
9. The flexible photomedical device of claim 8, wherein the number of rectifying structures is greater than one, and/or the number of rectifying structures to which at least one of the rectifying structures is connected is greater than one.
10. The flexible photomedical device of claim 7, wherein,
The charging induction structure and the lithium battery are horizontally arranged on the flexible substrate; or the charging induction structure and the lithium battery are stacked on the flexible substrate.
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