CN113950177A - Flexible photomedical device - Google Patents
Flexible photomedical device Download PDFInfo
- Publication number
- CN113950177A CN113950177A CN202111181860.6A CN202111181860A CN113950177A CN 113950177 A CN113950177 A CN 113950177A CN 202111181860 A CN202111181860 A CN 202111181860A CN 113950177 A CN113950177 A CN 113950177A
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- Prior art keywords
- light
- lithium battery
- flexible
- photomedical
- rectifying
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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 57
- 238000004806 packaging method and process Methods 0.000 claims abstract description 15
- 230000006698 induction Effects 0.000 claims description 61
- 238000007600 charging Methods 0.000 claims description 48
- 239000000463 material Substances 0.000 claims description 11
- 230000005284 excitation Effects 0.000 claims description 10
- 230000001939 inductive effect Effects 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 229920000642 polymer Polymers 0.000 claims description 4
- 229910021393 carbon nanotube Inorganic materials 0.000 claims description 3
- 239000002041 carbon nanotube Substances 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
- 230000003287 optical effect Effects 0.000 abstract description 15
- 230000003245 working effect Effects 0.000 abstract description 7
- 239000010410 layer Substances 0.000 description 46
- 238000005538 encapsulation Methods 0.000 description 13
- 230000001965 increasing effect Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002861 polymer material Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
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- 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
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000004205 dimethyl polysiloxane Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000001126 phototherapy Methods 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 238000000623 plasma-assisted chemical vapour deposition 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
- 239000011241 protective layer Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 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
- 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
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 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
- 238000004891 communication Methods 0.000 description 1
- 238000010277 constant-current charging Methods 0.000 description 1
- 238000010276 construction Methods 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
- 229920001971 elastomer Polymers 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
- 239000011245 gel electrolyte Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000005525 hole transport Effects 0.000 description 1
- 230000006872 improvement 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
- 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
- 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
- 238000007639 printing Methods 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
Images
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 photomedical device, which comprises: a flexible substrate; a plurality of light emitting structures and a plurality of lithium batteries disposed 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 structure 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 of the optical medical device in unit area and ensure the working effect of the optical medical device.
Description
Technical Field
The embodiment of the invention relates to the technical field of optical medical devices, in particular to a flexible optical medical device.
Background
With the improvement of the living standard of the mass, people have higher and higher requirements on health, and the illumination technology is popular with consumers as a mode with good safety effect, and the illumination is more and more widely applied to the optical medical treatment.
Problems with current wearable photomedical devices include: the photomedical device is flexible and bendable, but has poor stretching effect; moreover, the photomedical device is provided with a certain wiring harness, the wiring harness is long and cannot be carried, and various accessories need to be integrated, so that the actual light emitting area is small.
Disclosure of Invention
The embodiment of the invention provides a flexible photomedical device, which aims to improve the luminance of the photomedical device in unit area and ensure the working effect of the device.
The embodiment of the invention provides a flexible photomedical device, which comprises:
a flexible substrate;
a plurality of light emitting structures and a plurality of lithium batteries disposed 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 structure 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.
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 to each lithium battery is more 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 the at least four light-emitting structures surround the lithium batteries; at least part of the light-emitting structures are arranged in a grid-shaped arrangement mode, and each grid-shaped area comprises four light-emitting structures connected with different lithium batteries.
Optionally, the light emitting structure is electrically connected to the lithium battery through a stretchable connection lead.
Alternatively, the stretchable connecting lead may include an elastic wire formed by filling a liquid metal in a polymer micro tube, or a curved wire made of Ag, Al, Au, Cu, carbon nanotube, or graphene.
Optionally, the flexible photomedical device further includes a charging induction structure, the charging induction structure is electrically connected to the lithium battery, and the charging induction structure is configured to generate a charging current to charge the lithium battery when inducing an excitation current of an external transmitting coil; wherein 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 induced current when an excitation current of an external transmitting coil is induced;
the rectifying structure is respectively connected with the induction coil and the lithium battery; the rectifying structure is used for rectifying the induced current generated by the induction coil into direct current and providing the rectified induced current for the lithium battery;
the rectifying structure is arranged on the flexible substrate, and the packaging layer covers the rectifying structure; or, the packaging 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 the lithium batteries connected with at least one rectifying structure in the rectifying structures is more than one, and/or the number of the rectifying structures connected with at least one lithium battery in the lithium batteries is more 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 arranged on the flexible substrate in a stacking mode.
The embodiment of the invention provides a flexible photomedical device, which comprises: a flexible substrate; a plurality of light emitting structures and a plurality of lithium batteries disposed 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 structure 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 structures together, so that the voltage supplied to the light-emitting structures can be increased, the brightness of the light-emitting structures is improved, the brightness of the light-emitting structures in the area where the light-emitting structures are located is improved, and the brightness of the light-emitting devices in unit area 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; replace some lithium cell among the photomedical device of prior art for light-emitting structure, make the number of the light-emitting structure that the lithium cell is connected be greater than one for the number of light-emitting structure increases in the unit area, can increase the luminous regional area of photomedical device, and the area that the promotion light source that is bigger occupied has guaranteed the working effect of photomedical device, is applicable to the phototherapy of large tracts of land.
Drawings
FIG. 1 is a top view of a flexible photomedical device structure provided by 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 construction provided by embodiments of the invention;
FIG. 5 is a cross-sectional view of a flexible photomedical device provided by an embodiment of the invention;
fig. 6 is a circuit diagram of a charging circuit according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a mobile phone 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 embodiments of the invention;
FIG. 9 is a cross-sectional view of another configuration of a flexible photomedical device provided by embodiments of the invention;
FIG. 10 is a cross-sectional view of another flexible photomedical device in accordance with embodiments of the invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
An embodiment of the present invention provides a flexible photomedical device, where fig. 1 is a top view of a structure of the flexible photomedical device provided by an embodiment of the present invention, fig. 2 is a cross-sectional view of fig. 1 along line AA', 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 structure 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 to supply 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, and the material of the flexible substrate 10 includes an elastic polymer material. The elastic polymer material may be Thermoplastic polyurethane elastomers (TPU) or solid Polydimethylsiloxane (PDMS), i.e. the flexible base 10 is a stretchable substrate. The lithium battery 30 is a secondary battery in which lithium ions are repeatedly deintercalated between a positive electrode and a negative electrode and an oxidation reduction reaction occurs, and chemical energy is converted into electric energy during the discharge of the battery, and the electric energy is converted into chemical energy by charging the electric energy, 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 larger than one, and the plurality of lithium batteries 30 are connected in series to supply power to the light-emitting structures 40 together, so that the voltage supplied to the light-emitting structures 40 can be increased, the brightness of the light-emitting structures 40 is improved, the brightness of the light-emitting structures 40 in the area is improved, and the brightness of the light-emitting medical device in unit area is further improved. By setting the number of the light-emitting structures 40 connected with at least one lithium battery 30 in the lithium batteries 30 to be more than one, part of the lithium batteries 30 in the optical medical 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 of the optical medical device in the unit area can be improved, and the working effect of the optical medical 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 includes a layer of barrier glue, and the device is coated with a layer of barrier glue, and the barrier glue can be doped with a drying agent to prevent moisture from damaging the internal device. The encapsulation layer 70 may also be a silicon thin film formed on the surface of devices such as the light emitting cell and the lithium battery 30 by Physical Vapor Deposition (PVD) or Plasma Enhanced Chemical Vapor Deposition (PECVD). Preferably, the encapsulation layer 70 may be an elastic polymer material. The light emitting structure 40 and the lithium battery 30 are encapsulated by the same encapsulation layer 70, which can also reduce the process cost. Optionally, a protective layer 80 may be further disposed on a side of the encapsulation layer 70 away 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 relationship between the light-emitting structure and the battery for supplying power to the light-emitting structure is one-to-one corresponding connection; fig. 3 is a top view of a structure of a flexible photomedical device provided by 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 that of the lithium batteries 3; however, the light-emitting structures 2 and the lithium batteries 3 are connected in a one-to-one correspondence manner, so that the problem of low light-emitting brightness in the unit area of the optical medical device exists, and the working effect of the optical medical device is influenced.
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 is improved, the brightness of the light-emitting structures in the area where the light-emitting structures are located is improved, and the brightness of the photomedical device in unit area is improved; the number of the light-emitting structures connected with at least one lithium battery in the 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, 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 the light-emitting areas of the photomedical device can be increased, the area occupied by a larger lifting light source is increased, the working effect of the photomedical device is guaranteed, and the photomedical device is suitable for large-area phototherapy.
Optionally, 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 the lithium batteries connected with at least one light-emitting structure in the light-emitting structure is more than one and the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is more than one, it is preferable that the number of the light-emitting structures connected with at least one lithium battery in the lithium batteries is more than one, so that the total number of the light-emitting structures 40 is more than the total number of the lithium batteries 30, and the number of the light-emitting points of the flexible optical medical device can be increased. Compared with the one-to-one connection mode in the prior art, under the condition that the number of the light-emitting structures 40 is the same, the technical scheme provided by the embodiment of the invention can also reduce the number of the lithium batteries 30, reduce the area and the cost of the flexible photomedical device and ensure the light-emitting quantity of the flexible photomedical device.
Alternatively, referring to fig. 1, the number of the light emitting structures 40 connected to each lithium battery 30 is more than one.
Specifically, the area where the lithium batteries 30 are located in the prior art is 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 photomedical device is set to be more than one, the utilization rate of each lithium battery 30 can be further improved, the area of the light-emitting area of the photomedical device is increased, and the working effect of the photomedical device is ensured. Illustratively, the flexible photomedical device in the prior art includes three light-emitting structures 40 and three lithium batteries 30, and the light-emitting structures 40 are connected with the lithium batteries 30 in a one-to-one correspondence. Now, one of the lithium batteries 30 is replaced with the light emitting structure 40, so that the remaining two lithium batteries 30 respectively emit light to the two light emitting structures 40, that is, the number of the light emitting structures 40 connected to each lithium battery 30 is greater than one, and the number of the light emitting structures 40 is increased from three to four, thereby increasing the number of light emitting points in the flexible photomedical device.
Optionally, fig. 4 is a top view of another flexible photomedical device structure provided in an embodiment of the present invention, and referring to fig. 4, the light emitting structures 40 and the lithium batteries 30 are horizontally arranged on the flexible substrate 10, 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 batteries 30; at least part of the light-emitting structures 40 are arranged in a grid-shaped arrangement, and each grid-shaped area comprises four light-emitting structures 40 connected with different lithium batteries 30.
Specifically, the light emitting structure 40 and the lithium battery 30 are horizontally arranged on the flexible substrate 10 formed of the elastic polymer material, so that the stretchable effect of the flexible photomedical device can be further achieved. 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 batteries 30 connected with one light-emitting structure 40 cannot work normally, the other light-emitting structures 40 in the grid area can emit light normally, and the light-emitting uniformity of the flexible photomedical device can be ensured. 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 drawn 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 a polygon having more sides than four sides, such as a hexagon or an octagon.
Alternatively, referring to fig. 4, the light emitting structure 40 is electrically connected to 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 of the flexible photomedical device is not easy to break in the pulling process. Thereby further improving the stretchability of the flexible optical medical device and simultaneously ensuring that the yield of the flexible optical medical device is improved. The connecting lead 4 may be an elastic conductor formed by filling a polymer microtube with a liquid metal, such as a liquid gallium-indium alloy, so that the polymer microtube has elasticity and is extensible, or a curved conductor made of Ag, Al, Au, Cu, carbon nanotubes or graphene, so that the electrical connection in the circuit can be achieved by the connecting lead 4 being stretchable.
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 that 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; a negative collector 35 of the lithium battery 30 is connected to the negative electrode via a connection lead 4;
specifically, the lithium battery 30 has a structure including 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 positive and negative collectors may be made of aluminum, copper, gold, nickel, platinum, or 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 process. The material of the electrolyte layer 33 is a gel electrolyte 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 Diode (OLED). The light emitting structure 40 includes an anode 43, a light emitting layer 42, and a cathode 41, which are stacked. The OLED anode 43 is prepared on the flexible substrate 10, and the light emitting layer 42 is formed by printing the light emitting material on the anode 43 by means of ink jet printing, and the cathode 41 is formed on the light emitting layer 42. At least one functional layer of 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. The hole injection layer 45 and the electron transport layer 44 are exemplarily depicted in fig. 2. Positive collector electrode 31 of lithium battery 30 is electrically connected to anode 43 of light-emitting structure 40 via connection lead 4, and negative collector electrode 35 of lithium battery 30 is electrically connected to the negative electrode of light-emitting structure 40 via 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 range of the vertical projection of the lithium battery 30 on the flexible substrate 10 is set to 10um to 5 mm.
Optionally, fig. 5 is a cross-sectional view of a structure of a flexible photomedical device according to an embodiment of the present invention, and referring to fig. 5, the flexible photomedical device further includes a charging induction structure 20, the charging induction structure 20 is electrically connected to a lithium battery 30, preferably, the charging induction structure 20 is electrically connected to the lithium battery 30 through a stretchable connecting lead, and the charging induction 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 (fig. 5 only illustrates an exemplary connection relationship among the charging induction structure 20, the lithium battery 30, and the light emitting structure 40, and the number of the lithium battery 30 and the light emitting structure 40 included in the flexible photomedical device is plural).
Specifically, the charging induction structure 20 generates a charging current to charge the lithium battery 30 when inducing an excitation current of the external transmitting coil, 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 a charging current to charge the lithium battery 30 when inducing the excitation current of the external transmitting coil, without using a wire harness to charge the battery, thereby realizing wireless charging of the lithium battery 30 and having an effect of convenient carrying.
Alternatively, referring to fig. 5, the charging induction structure 20 includes:
an induction coil 21 for generating an induction current when an excitation current to the external transmission coil is induced;
the rectifying structure 22, the rectifying structure 22 is connected with the induction coil 21 and the lithium battery 30 respectively; the rectifying structure 22 is configured to rectify the induced current generated by the induction coil 21 into direct current, and supply the rectified induced current to the lithium battery 30.
Specifically, fig. 6 is a charging circuit diagram provided in an embodiment of the present invention, fig. 7 is a schematic structural diagram of a mobile phone for wirelessly charging a flexible optical medical device provided in an embodiment of the present invention, and referring to fig. 6 to 7, a corresponding current excitation I is provided to an internal induction coil 21 through an external coil or the mobile phone 1, and a lithium battery 30 may be charged according to Near Field Communication (NFC) technology or an electromagnetic induction principle. The induction coil 21 may generate an induction current when inducing the excitation current I of the external transmission coil, thereby implementing 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, a schottky diode, an inductor, and a capacitor.
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 more 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 more than one.
Specifically, the number of the lithium batteries 30 connected to at least one rectifying structure 22 in the rectifying structures 22 is more than one, that is, one rectifying structure 22 can charge a plurality of lithium batteries 30; or the number of the rectifying structures 22 connected to at least one lithium battery 30 in the lithium batteries 30 may be more than one, that is, one lithium battery 30 may receive the charging of a plurality of rectifying structures 22. Preferably, the rectifying structure 22 is used to connect more than one lithium battery 30, and one rectifying structure 22 charges a plurality of lithium batteries 30, so that each rectifying structure 22 can be fully utilized, and the number of rectifying structures 22 is reduced, thereby reducing the cost of the photomedical device and the area of the photomedical device.
Alternatively, referring to fig. 5, the charge sensing structure 20 and the lithium battery 30 are horizontally arranged on the flexible substrate 10; alternatively, fig. 8 is a cross-sectional view of another flexible photomedical device provided by the embodiment of the invention, and referring to fig. 8, the charge sensing structure 20 and the lithium battery 30 are stacked on the flexible substrate 10.
Specifically, the charging sensing structure 20 and the lithium battery 30 are horizontally arranged on the flexible substrate 10, and the rectifying structure 22 and the lithium battery 30 can be connected by a stretchable connecting lead, so as to ensure the stretchability of the photomedical device. The charging induction structure 20 and the lithium battery 30 are stacked on the flexible substrate 10, and the rectifying structure 22 and the lithium battery 30 can be connected by contacting with each other. Preferably, referring to fig. 8, the charging sensing structure 20 and the lithium battery 30 are stacked on the flexible substrate 10, that is, a vertical projection of the charging sensing structure 20 on the flexible substrate 10 at least partially overlaps a disposal projection of the lithium battery 30 on the flexible substrate 10, so that an area occupied by the charging sensing structure 20 can be reduced. Thereby further reducing the area of the photomedical device; or the area occupied by the light emitting structure 40 in the photomedical device may be increased with the same area. When the perpendicular projection of the charging sensing structure 20 on the flexible substrate 10 completely overlaps 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 may be connected in a one-to-one correspondence manner.
Referring to fig. 5 and 8, the fairing structure 22 can be disposed directly on the flexible substrate 10 with an encapsulation layer 70 covering the fairing structure 22. Alternatively, fig. 9 is a cross-sectional view of another flexible photomedical device provided by the embodiment of the invention, fig. 10 is a cross-sectional view of another flexible photomedical device provided by the embodiment of the invention, and referring to fig. 9 and 10, the rectifying structure 22 may also be mounted by Surface Mount Technology (SMT) after the package layer 70 is completed, a through hole may be reserved in the package 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 mode that 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 arranged on the flexible substrate 10. The rectifying structure 22 in the charge inducing structure 20 may be disposed on the flexible substrate 10 (refer to fig. 5), and the encapsulation layer 70 covers the rectifying structure 22; alternatively, the encapsulation layer 70 includes a via hole in which the rectifying structure 22 is located (refer to fig. 9).
Specifically, when the induction coil 21 and the rectifying structure 22 in the charging induction structure 20 are both arranged on the flexible substrate 10, the induction coil 21 and the rectifying structure 22 are arranged in the same layer; the rectifying structure 22 may be electrically connected to the positive collector electrode 31 and the negative collector electrode 35 of the lithium battery 30 provided in the same layer via the connection lead 4. In the case where the rectifying structure 22 is mounted by the surface mount technology after the encapsulation layer 70 is formed, 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 (pads 23 are illustratively substituted for input pads and output pads in fig. 9). The input pad is connected to induction coil 21, and the output pad is connected to lithium battery 30 (positive collector electrode 31 and negative collector electrode 35). The input of rectifying structure 22 is connected to the input pad and the output of 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 current to the lithium battery 30 through the output pad, so that the lithium battery 30 is charged. That is, the induction coil 21 and the bonding pad are arranged on the same layer, a through hole can be reserved in the packaging layer 70 during the preparation process, and the rectifying structure 22 is attached in the through hole and 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 supplies the induction current to the lithium battery 30 for charging.
Referring to fig. 8 and 10, for an arrangement in which the charging induction structure 20 is disposed on the flexible substrate 10 in a stacked manner with the lithium battery 30, the induction coil 21 in the charging induction structure 20 is disposed on the flexible substrate 10. The rectifying structure 22 in the charge inducing structure 20 may be disposed on the flexible substrate 10 (refer to fig. 8), and the encapsulation layer 70 covers the rectifying structure 22; alternatively, the encapsulation layer 70 includes a through hole 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 arranged on the flexible substrate 10, the induction coil 21 and the rectifying structure 22 are arranged in the same layer; the induction coil 21 and the rectifying structure 22 further comprise a first insulating layer 50 on the side away from the flexible substrate; the first insulating layer 50 includes a first landing hole 51 and a second landing hole 52; the lithium battery 30 is located on a side of the first insulating layer 50 away from the flexible substrate 10; the positive collector electrode 31 of the lithium battery 30 is connected to the rectifying structure 22 via a first landing hole 51, and the negative collector electrode 35 of the lithium battery 30 is connected to the rectifying structure 22 via a second landing hole 52. In the case where the rectifying structure 22 is mounted by the surface mount technology after the encapsulation layer 70 is formed, 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 (pads 23 are illustratively substituted for input pads and output pads in fig. 10). Wherein the input pad is connected to the induction coil 21 and the output pad is connected to the lithium battery 30. The input of rectifying structure 22 is connected to the input pad and the output of 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 current to the lithium battery 30 through the output pad, so that the lithium battery 30 is charged. That is, the induction coil 21 and the bonding pad are arranged on the same layer, a through hole can be reserved in the packaging layer 70 during the preparation process, and the rectifying structure 22 is attached in the through hole and 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 supplies the induction current to the lithium battery 30 for charging.
The rectifying structure is electrically connected with the induction coil and the lithium battery respectively, the connection mode can also be realized through a connecting lead, a contact or a bonding pad, and the connection mode can also be realized through other modes, which are not described herein.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. 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, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A flexible photomedical device, comprising:
a flexible substrate;
a plurality of light emitting structures and a plurality of lithium batteries disposed 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 structure 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.
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 each of the lithium batteries is connected to more than one light emitting structure.
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 the at least four light-emitting structures surround the lithium batteries; at least part of the light-emitting structures are arranged in a grid-shaped arrangement mode, and each grid-shaped area comprises four light-emitting structures connected with different lithium batteries.
5. The flexible photomedical device of claim 1, wherein the light emitting structure is electrically connected to the lithium battery by stretchable connecting leads.
6. The flexible photomedical device of claim 5, wherein the stretchable connecting leads comprise elastic wires formed by filling polymer microtubes with liquid metal or by curvilinear wires made of Ag, Al, Au, Cu, carbon nanotubes or graphene.
7. The flexible photomedical device of claim 1, further comprising a charge inducing structure electrically connected to the lithium battery, the charge inducing structure configured to generate a charging current to charge the lithium battery when an excitation current of an external transmitting coil is induced; wherein 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 induced current when an excitation current of an external transmitting coil is induced;
the rectifying structure is respectively connected with the induction coil and the lithium battery; the rectifying structure is used for rectifying the induced current generated by the induction coil into direct current and providing the rectified induced current for the lithium battery;
the rectifying structure is arranged on the flexible substrate, and the packaging layer covers the rectifying structure; or, the packaging layer comprises a through hole, and the rectifying structure is positioned in the through hole.
9. The flexible photomedical device of claim 7, wherein the number of rectifying structures is a plurality, the number of lithium batteries to which at least one of the rectifying structures is connected is greater than one, and/or the number of rectifying structures to which at least one of the lithium batteries is connected is greater than one.
10. The flexible photomedical device of claim 7,
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 arranged on the flexible substrate in a stacking mode.
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