CN110071371A - One bit of one kind is based on the super surface of liquid crystal digital formula and its resonance control method - Google Patents
One bit of one kind is based on the super surface of liquid crystal digital formula and its resonance control method Download PDFInfo
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- CN110071371A CN110071371A CN201910409576.6A CN201910409576A CN110071371A CN 110071371 A CN110071371 A CN 110071371A CN 201910409576 A CN201910409576 A CN 201910409576A CN 110071371 A CN110071371 A CN 110071371A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 105
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 43
- 229910052751 metal Inorganic materials 0.000 claims abstract description 43
- 239000011521 glass Substances 0.000 claims abstract description 25
- 239000000758 substrate Substances 0.000 claims abstract description 19
- 238000004873 anchoring Methods 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 2
- 238000013461 design Methods 0.000 abstract description 8
- 230000007797 corrosion Effects 0.000 abstract description 2
- 238000005260 corrosion Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 11
- 230000001276 controlling effect Effects 0.000 description 8
- 230000033228 biological regulation Effects 0.000 description 6
- 238000004088 simulation Methods 0.000 description 6
- 238000012360 testing method Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 108091026890 Coding region Proteins 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 239000004642 Polyimide Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000006897 homolysis reaction Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses an a kind of bits to be based on the super surface of liquid crystal digital formula and its resonance control method, super surface from top to bottom successively includes upper layer glass medium substrate, the super surface of liquid crystal reflective artificial electromagnetic, first liquid crystal molecule oriented layer, liquid crystal material layer, second liquid crystal molecule oriented layer, cathode ground metal block layer and lower layer's glass medium substrate, upper layer glass medium substrate one end extends outwardly, and extended spot lower surface is additionally provided with positive DC bias electrode pin metal block, cathode metal block layer and lower layer's glass medium substrate other end opposite with positive DC bias electrode pin metal block extend outwardly, by control positive DC bias electrode pin metal block and cathode the size of bias voltage changes between metal block layer to change the relative dielectric constant of liquid crystal material layer, to realize different beams adjusting function.Structure of the invention is at low cost, loss is small, light weight, corrosion-resistant, design is simple, radar, in terms of be with a wide range of applications.
Description
Technical field
The invention belongs to Novel manual electromagnetic material field, be related to an a kind of bit be based on the super surface of liquid crystal digital formula and its
Resonance control method.
Background technique
Meta Materials are made of a series of arrangement of period sub-wavelength structures, be can be realized many nature materials and are realized not
The electromagnetic wave of energy manipulates characteristic, inhales wave, electromagnetism stealth, negative refraction, variation optics such as perfect.In the past few decades, surpass
Material is mainly three-dimensional structure, and the structural loss is big, at high cost, manufacture difficulty is big, not easy of integration, and section is high, in millimeter wave, too
The practical application of the even higher frequency range of hertz is restricted.Propose a kind of new type superthin Meta Materials, as super table recent years
Face improves many deficiencies of three-dimensional metamaterial.
Theoretical different from previous effective medium Meta Materials, the concept of digital super surface bit is to phase or amplitude
Discretization expression is carried out, which was suggested with 2014.By the thought of similar digital signal, by traditional simulation continuous phase
Position carries out the expression of discretization bit, and a such as digital bit encodes, and in 0~2 π, each discrete phase unit scale is 2 pi/2 N, N
For bit number, that is, indicates that digital subelement 0 and 1 can indicate 0 and π, digital coding is carried out to super surface with the discretization phase,
Realize that the regulation of the states such as polarization, certain number of bits is more, and the precision realized can be higher to electromagnetic scattering, deviation.It is logical
It crosses active device to regulate and control phase or amplitude coding, achievees the effect that realize simplified control electromagnetic wave.
It is the semiconductor devices such as diode that one kind, which commonly using adjustable method, however it innately can be with there are parasitic capacitance and inductance
The increase of frequency gradually become obvious, will cause insertion loss increase, while can also interfere with the reliability of circuit simulation design
With not easy of integration and control；Another kind commonly uses adjustable MEMS higher cost, and the response time is also longer.Thus by using
This phase-change material of liquid crystal, which comes the super surface of regulating and controlling digital, can solve problem above, while greatly reduce cost, it is only necessary to few
Amount liquid crystal can be achieved with the super granule surface contral of a digital bit.Compared with existing regulation method, the method for liquid crystal regulation is regulation
Electromagnetic wave provides innovative method.
Summary of the invention
Goal of the invention: the present invention provide it is a kind of reduce design is easy, at low cost, low, millimeter wave is lost, low section one
The super surface of bit liquid crystal regulating and controlling digital formula and its resonance control method.
Technical solution: for achieving the above object, the invention adopts the following technical scheme:
One bit of one kind is based on the super surface of liquid crystal digital formula, from top to bottom successively includes upper layer glass medium substrate, liquid crystal
The super surface of reflection-type artificial electromagnetic, the first liquid crystal molecule oriented layer, liquid crystal material layer, the second liquid crystal molecule oriented layer, cathode
Metal block layer and lower layer's glass medium substrate, upper layer glass medium substrate one end extends outwardly, and extended spot lower surface is also set up
There is a positive DC bias electrode pin metal block, cathode ground metal block layer and lower layer's glass medium substrate and positive DC biased electrical
The pin metal block opposite other end in pole extends outwardly, by control positive DC bias electrode pin metal block and cathode golden
Belong to the size of bias voltage between block layer to change the relative dielectric constant variation of liquid crystal material layer, to realize that different beams regulate and control
Function.
Optionally, the super surface of liquid crystal reflective artificial electromagnetic includes the digital subelement of m × m array arrangement, every number
Word subelement is made of the super digital subelement of n × n array arrangement, and each super digital subelement of colleague passes through conducting wire string
Connection connection, odd-numbered line or even number line number subelement are connected to positive DC bias electrode pin metal block.
Optionally, the first liquid crystal molecule oriented layer includes that the liquid crystal molecule of array arrangement corresponding with digital subelement is fixed
To unit.
Optionally, the first liquid crystal molecule oriented layer and the second liquid crystal molecule oriented layer are the initial side of liquid crystal material molecules anchoring
To.
Optionally, positive DC bias electrode pin metal block, cathode ground metal block, digital subelement and digital subelement
Series conductor is all made of photoengraving on upper layer glass medium baseplate material and lower layer's glass medium baseplate material.
Optionally, super digital subelement is square.
The present invention also provides a kind of resonance control method of the bit based on the super surface of liquid crystal digital formula, in working frequency range
It is interior, pass through the size of bias voltage between with controlling positive DC bias electrode pin metal block and cathode metal block layer, control
Two kinds of different conditions that reflected phase difference is about 180 ° are presented in liquid crystal material layer relative dielectric constant, super number subelement.
Further, the two states of super digital subelement are characterized with different numbers, and original state is digital
" 0 " indicates, 180 ° of states digital " 1 " are differed with original state to be indicated.
Further, full line control is carried out to odd-numbered line or even number line number subelement, so that liquid crystal reflective is manually electric
Different coded sequences is presented in the super surface of magnetic, thus dynamic implement different beams adjusting function.
Further, liquid crystal molecule oriented layer is liquid crystal material layer anchoring inceptive direction, and then is super digital subelement
The initial digital state of anchoring.
The utility model has the advantages that compared with prior art, the invention has the following advantages that
The super surface of existing electricity regulating and controlling digital formula mostly uses greatly semiconductor devices, and working frequency range is lower, is usually operated at
Microwave frequency band, this just very limits to Meta Materials equipment application, simultaneously because semiconductor devices innately has parasitic capacitance and inductance,
It influences sharply amplify as frequency increases brought by these reactance, such as loss increases, and frequency increases etc..These are not
The factor of benefit all can bring tremendous influence to the super surface design feasibility of number and practicability.
The present invention constructs a kind of digital super surface of liquid crystal regulation, the digital super surface phase with existing electricity regulation
Than the super surface of liquid crystal regulating and controlling digital formula can work in millimeter wave and Terahertz frequency range, while simplify supply network road design, not have to
Take medium punching connection, wiring simply be easily integrated, while being lost low.
A super surface of bit liquid crystal digital formula of the invention has broadband character, and digital subelement loads liquid crystal material up and down
Material, its dielectric constant can be continuously adjustable with external bias voltage, and 0-360 ° of phase can be realized in wider frequency range
Potential difference, this is that all electricity are adjusted and all be cannot achieve at present, while being also that first energy is based on liquid crystal and realizes that bit dynamic is adjustable
Digital super surface.
The super surface design of a bit liquid crystal digital formula of the invention is easy, processing cost is low, and the size of digital subelement is small,
Structure is simple, there is good versatility, and the size by changing digital sub-unit structure can be designed in different operating frequency point, easily
In popularization and application.
Detailed description of the invention
Fig. 1 (a) is the overall structure schematic top plan view on a super surface of bit liquid crystal reflective number in the embodiment of the present invention；
Fig. 1 (b) is a super digital subelement being made of in the embodiment of the present invention 3 × 3 digital subelements；
Fig. 1 (c) is that a bit liquid crystal digital encodes super entire surface structure schematic side view in the embodiment of the present invention；
Fig. 2 (a) is the relative dielectric constant ε of liquid crystal phase material in the embodiment of the present inventionr,LCWith DC offset voltage V
The actual test curve of variation；
Fig. 2 (b) be in inventive embodiments it is super number subelement under different bias voltages when liquid crystal material " 0 " state and
The reflection S parameter curve phase and amplitude simulation curve varying with frequency of one state；
Fig. 3 (a) is that a bit is based on the super surface of liquid crystal digital formula in 32.5GHz, digital coding sequence in the embodiment of the present invention
Three-dimensional far field reflected beam directional diagram result emulation schematic diagram is tieed up in 3 obtained when being classified as " 0000 ", and Fig. 3 (b) is implementation of the present invention
A bit is based on the super surface of liquid crystal digital formula in 32.5GHz in example, and 3 dimensions that digital coding sequence obtains when being " 1010 " are three-dimensional remote
Field reflected beam directional diagram result emulates schematic diagram；
Fig. 4 (a) be in the embodiment of the present invention a super surface of bit liquid crystal digital formula in 32.5GHz, bias voltage V=0v,
The experimental result schematic diagram for the 2 dimensional plane reflected beam polar coordinates directional diagrams that coded sequence obtains when being " 0000 ", Fig. 4 (b) are
In 32.5GHz, bias voltage V=8v, coded sequence is " 1010 " on a super surface of bit liquid crystal digital formula in the embodiment of the present invention
When the obtained experimental result schematic diagram of 2 dimensional plane reflected beam polar coordinates directional diagrams；
In figure: positive DC bias electrode pin metal block 1 connects the conducting wire 2 of digital subelement, cathode ground metal block 3,
Digital subelement 4, liquid crystal material layer 5, upper layer glass medium substrate 6, lower layer's glass medium substrate 7, liquid crystal molecule oriented layer 8,
Super number subelement 9.
Specific embodiment
Below with reference to embodiment and Figure of description, the present invention is further illustrated.
The present invention designs and has made an a kind of super surface of bit liquid crystal digital formula, passes through control external direct current power supply switch
A variety of coded sequences may be implemented in control bias voltage.As shown in Fig. 1 (a) to Fig. 1 (c), a bit liquid crystal digital of the invention
Formula encodes super surface, from top to bottom successively includes upper layer glass medium substrate, the super surface of liquid crystal reflective artificial electromagnetic, the first liquid
Brilliant molecular orientation layer, liquid crystal material layer, the second liquid crystal molecule oriented layer, cathode ground metal block layer and lower layer's glass medium substrate,
Upper layer glass medium substrate one end extends outwardly, and extended spot lower surface is additionally provided with positive DC bias electrode pin metal
Block, cathode metal block layer and lower layer's glass medium substrate other end opposite with positive DC bias electrode pin metal block to
Outer extension, by control positive DC bias electrode pin metal block and cathode between metal block layer bias voltage size come
Change the relative dielectric constant variation of liquid crystal material layer, to realize different beams adjusting function.
The super surface of liquid crystal reflective artificial electromagnetic includes the digital subelement of m × m array arrangement, and wherein m is number
The line number and columns of unit 4；Each number subelement is made of the super digital subelement of n × n array arrangement, and wherein n is
The columns and line number of super number subelement in digital subelement, each super digital subelement of colleague is connected by conducting wire to be connected
Connect, odd-numbered line or even number line number subelement be connected to positive DC bias electrode pin metal block (shown in such as Fig. 1 (a), this hair
It is connected for the first row and the third line number subelement with positive DC bias electrode pin metal block in bright embodiment).Pass through
The size of bias voltage is controlled to change the relative dielectric constant variation of liquid crystal material, each super digital subelement coding is only
It is controlled by liquid crystal region below.
The anode (positive DC bias electrode pin metal block) of liquid crystal material by with need to provide the super of bias voltage
With cathode metal block layer is connected the connected conducting wire of the digital subelement of grade, forms direct current closed circuit.In working frequency range, lead to
Liquid crystal molecule oriented layer 8 is crossed to carry out preset direction setting to liquid crystal molecule direction of rotation, by controlling positive DC biased electrical
Pole pin metal block and cathode ground size of bias voltage between metal block layer, control liquid crystal material layer relative dielectric constant, surpass
Two kinds of different conditions that reflected phase difference is about 180 ° are presented in the digital subelement of grade.The two states of super number subelement are not with
Same number is characterized, and original state is indicated with digital " 0 ", and 180 ° of states digital " 1 " expression is differed with original state.It is right
Odd-numbered line or even number line number subelement carry out full line control, so that different volumes is presented in the super surface of liquid crystal reflective artificial electromagnetic
Code sequence, thus dynamic implement different beams adjusting function.Liquid crystal molecule oriented layer is that liquid crystal material layer is anchored inceptive direction, into
And it is super digital subelement anchoring inceptive direction.
In the present invention, liquid crystal material model Merck liquid crystal；Glass medium substrate model BF33, provides support for metal
Position；Conducting wire provides bias voltage for liquid crystal；The material of liquid crystal molecule oriented layer is polyimides nylon；Super number subelement
It is square, material is metallic copper.
As shown in Fig. 1 (a), in the present embodiment, the super surface of liquid crystal reflective artificial electromagnetic includes 4 × 4 digital subelements
4, as shown in Fig. 1 (b), each number subelement 4 is made of the super digital subelement 9 of 3 × 3 sub-wavelength sizes.Fig. 2 (a)
Change test schematic diagram with bias voltage for the opposite variation dielectric constant of liquid crystal material used in the present invention, Fig. 2 (b) is
The super digital subelement of Fig. 1 (b) is in Fig. 2 (a) liquid crystalline phase to the reflected phase and curve graph under change in dielectric constant.Pass through selection
Working frequency range is in 32.5GHz, the two states response that phase difference is about 180 °, as the relative dielectric constant ε of liquid crystal materialr,LC=
When 2.4, digital subelement 4 is " 0 " state, εr,LCWhen=3.2, digital subelement 4 is one state.In order to simplify feed, we
One state conducting wire 2 is connected, i.e., it is " 0 " state that Fig. 1 (a) the first row and the third line are not powered, is powered on as one state；
Second does not need making alive with fourth line, and experimental project is always " 0 " state, just constitute at this time two kinds of coded sequences " 0000 " with
" 1010 " prove the feasibilities of LCD Controlling digital coding Meta Materials, in order to verify a bit liquid crystal number designed by the present invention
The super surface of word formula, is emulated by numerical simulation CST software.If Fig. 3 (a) is the super surface of artificial reflections formula liquid crystal digital
The 3 dimension far field beam directional diagrams of " 0000 " are as a result, Z axis is directed toward in only one main beam, direction；Reach real when changing dielectric constant
When being now encoded to " 1010 " sequence, shown in simulation result such as Fig. 3 (b), main beam homolysis is that equirotal two 3 dimensions are anti-
Ejected wave beam.In experiment test, we use working frequency range 22-33GHz frequency range, and canonical reference gain is the pyramid loudspeaker of 20dBi
Antenna reflects on super surface as plane wave generator, uniform irradiation in a bit liquid crystal digital.Measurement result shows when inclined
Set DC voltage be 0V when, coded sequence be " 0000 ".Wave beam does not do any variation, directly reflects, as shown in Fig. 4 (a),
To emulate and testing two-dimentional polar coordinates reflected beam directional diagram；When changing DC offset voltage is 8V, super subelement at this time
Patch difference reaches 180 ° or so, and coded sequence is " 1010 ", and shown in test result such as Fig. 4 (b), there are two main waves for back wave
Beam appears near ± 22.5 °.The simulation result that the reflected beam and solid line on the one super surface of bit liquid crystal reflective number indicate
It coincide good, further demonstrates the feasibility and correctness of the super sufacing of liquid crystal digital formula.
Liquid crystal material layer 5 is embedded in upper layer glass medium baseplate material and lower layer's glass medium baseplate material in the present invention
In, with subelement 4 digital in digital reflection-type artificial electromagnetic surface and cathode metal block 3 is linked together liquid crystal material.Often
A liquid crystal region covers a digital subelement.It is normal with respect to dielectric that liquid crystal material is adjusted by controlling external DC voltage size
Several variations, different reflected phases is presented in the digital subelement of one of liquid crystal region covering, by choosing digital subelement phase
Potential difference is about 180 ° of two states, is indicated with digital " 0 " and " 1 ", to realize that a digital bit encodes super surface, and then right
Electromagnetic beam realizes various manipulation functions.The present invention solves the single deficiency of existing digital super granule surface contral mode, and with
Existing automatically controlled method is compared, and the method for liquid crystal improves working frequency range, reduces the complexity of the design of system, has cost
It is low, small, low section is lost, it is corrosion-resistant, the advantages that simple is designed, in radar, wireless satellite communications, holographic imaging etc. has
Very huge application prospect.
Claims (10)
1. an a kind of bit is based on the super surface of liquid crystal digital formula, it is characterised in that: from top to bottom successively include upper layer glass medium
Substrate, the super surface of liquid crystal reflective artificial electromagnetic, the first liquid crystal molecule oriented layer, liquid crystal material layer, the second liquid crystal molecule orientation
Layer, cathode ground metal block layer and lower layer's glass medium substrate, upper layer glass medium substrate one end extends outwardly, and extended spot following table
Face is additionally provided with positive DC bias electrode pin metal block, cathode metal block layer and lower layer's glass medium substrate and anode it is straight
The opposite other end of stream bias electrode pin metal block extends outwardly, by control positive DC bias electrode pin metal block and
Cathode between metal block layer the size of bias voltage change the relative dielectric constant variation of liquid crystal material layer, to realize difference
Wave beam adjusting function.
2. an a kind of bit according to claim 1 is based on the super surface of liquid crystal digital formula, it is characterised in that: liquid crystal reflective
The super surface of artificial electromagnetic includes the digital subelement of m × m array arrangement, and each number subelement is by n × n array arrangement
Super number subelement is constituted, and each super digital subelement of colleague is connected in series by conducting wire, odd-numbered line or even number line number
Subelement is connected to positive DC bias electrode pin metal block.
3. an a kind of bit according to claim 1 is based on the super surface of liquid crystal digital formula, it is characterised in that: the first liquid crystal point
Sub- oriented layer includes the liquid crystal molecule directed element of array arrangement corresponding with digital subelement.
4. an a kind of bit according to claim 1 is based on the super surface of liquid crystal digital formula, it is characterised in that: the first liquid crystal point
Sub- oriented layer and the second liquid crystal molecule oriented layer are that liquid crystal material molecules are anchored inceptive direction.
5. an a kind of bit according to claim 1 is based on the super surface of liquid crystal digital formula, it is characterised in that: positive DC is inclined
Metal block, digital subelement and digital subelement series conductor are all made of photoengraving upper with setting electrode pin metal block, cathode
On layer glass medium baseplate material and lower layer's glass medium material.
6. an a kind of bit according to claim 1 is based on the super surface of liquid crystal digital formula, it is characterised in that: super number
Unit is square.
7. a kind of any one of the claim 1-6 resonance control method of the bit based on the super surface of liquid crystal digital formula, special
Sign is: in working frequency range, between metal block layer partially by control positive DC bias electrode pin metal block and cathode
The size of voltage is set, controls liquid crystal material layer relative dielectric constant, it is about 180 ° that reflected phase difference, which is presented, in super number subelement
Two kinds of different conditions.
8. a kind of resonance control method of the bit based on the super surface of liquid crystal digital formula according to claim 7, feature
It is, the two states of super number subelement are characterized with different numbers, and original state is indicated with digital " 0 ", and first
Beginning state differs 180 ° of states and is indicated with digital " 1 ".
9. a kind of resonance control method of the bit based on the super surface of liquid crystal digital formula according to claim 7, feature
It is, full line control is carried out to odd-numbered line or even number line number subelement, so that the super surface of liquid crystal reflective artificial electromagnetic is presented
Different coded sequence, thus dynamic implement different beams adjusting function.
10. a kind of resonance control method of the bit based on the super surface of liquid crystal digital formula according to claim 7, feature
It is, liquid crystal molecule oriented layer is liquid crystal material layer anchoring inceptive direction, and then is the super digital initial number of subelement anchoring
State.
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| CN111273475A (en) * | 2020-03-27 | 2020-06-12 | Tcl华星光电技术有限公司 | Display device, display panel and manufacturing method thereof |
| CN111585028A (en) * | 2020-05-26 | 2020-08-25 | 华南理工大学 | Digital coding holographic antenna and regulating and controlling method thereof |
| CN111769366A (en) * | 2020-06-23 | 2020-10-13 | 东南大学 | High-sensitivity millimeter wave super-surface sensor based on liquid crystal dual-mechanism |
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| CN111273475A (en) * | 2020-03-27 | 2020-06-12 | Tcl华星光电技术有限公司 | Display device, display panel and manufacturing method thereof |
| CN111273475B (en) * | 2020-03-27 | 2021-05-28 | Tcl华星光电技术有限公司 | Display device, display panel and manufacturing method thereof |
| US11281051B2 (en) | 2020-03-27 | 2022-03-22 | Tcl China Star Optoelectronics Technology Co., Ltd | Display panel and method for fabricating same |
| CN111585028A (en) * | 2020-05-26 | 2020-08-25 | 华南理工大学 | Digital coding holographic antenna and regulating and controlling method thereof |
| CN111585028B (en) * | 2020-05-26 | 2023-09-19 | 华南理工大学 | Digital coding holographic antenna and regulation and control method thereof |
| CN111769366A (en) * | 2020-06-23 | 2020-10-13 | 东南大学 | High-sensitivity millimeter wave super-surface sensor based on liquid crystal dual-mechanism |
| CN111769366B (en) * | 2020-06-23 | 2021-08-10 | 东南大学 | High-sensitivity millimeter wave super-surface sensor based on liquid crystal dual-mechanism |
| CN112952392A (en) * | 2021-01-26 | 2021-06-11 | 东南大学 | Terahertz digital programmable super surface for liquid crystal regulation and control |
| WO2023060557A1 (en) * | 2021-10-15 | 2023-04-20 | 北京小米移动软件有限公司 | Antenna array and communication device |
| CN114171927A (en) * | 2021-12-09 | 2022-03-11 | 东南大学 | Intelligent electromagnetic super surface controlled by voice recognition |
| CN115202088A (en) * | 2022-05-17 | 2022-10-18 | 北京航空航天大学杭州创新研究院 | Phase-tunable spinning terahertz source device and preparation method and application thereof |
| CN115202088B (en) * | 2022-05-17 | 2024-03-19 | 北京航空航天大学杭州创新研究院 | Phase-tunable spin terahertz source device and preparation method and application thereof |
| WO2024036455A1 (en) * | 2022-08-15 | 2024-02-22 | 北京小米移动软件有限公司 | Metasurface implementation method and apparatus based on liquid crystal regulation and control, and metasurface unit |
| WO2024082311A1 (en) * | 2022-10-21 | 2024-04-25 | 北京小米移动软件有限公司 | Metasurface unit and metasurface |
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