CN101470286A - Smectic state LCD device - Google Patents
Smectic state LCD device Download PDFInfo
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- CN101470286A CN101470286A CNA2007103044105A CN200710304410A CN101470286A CN 101470286 A CN101470286 A CN 101470286A CN A2007103044105 A CNA2007103044105 A CN A2007103044105A CN 200710304410 A CN200710304410 A CN 200710304410A CN 101470286 A CN101470286 A CN 101470286A
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Abstract
The invention discloses a smectic state liquid crystal display device, which comprises a smectic liquid crystal display screen, a drive control device, a storage battery and a solar receiver, wherein the smectic state liquid crystal display screen, the drive control device, the storage battery and the solar receiver are sequentially connected. The smectic state liquid crystal display screen comprises a first matrix layer and a second matrix layer, wherein a mixed layer composed of smetic state crystal and additive is arranged between the first matrix layer and a second matrix layer, a first conductive electrode layer and a second conductive electrode layer are respectively disposed on the sides of the first and second matrix layer facing the mixed layer, both the first and second conductive electrode layers are formed by a plurality of parallel arranged strip electrodes, and the strip electrodes of the two conductive electrode layers are mutually perpendicular to form a pixel lattice array, and the first and second conductive electrode layers are connected with the drive control device. The solar receiver includes at least one solar panel. The smectic state crystal liquid crystal display device has low energy consumption and zero radiation, utilizes the solar panel for charging, and is adaptable to outdoor use.
Description
Technical field
The present invention relates to a kind of liquid crystal indicator, specifically, relate to a kind of liquid crystal indicator solar panel power supply, that adopt the smectic phase liquid crystal technology to make that utilizes.
Background technology
At present, in liquid crystal indicator, using more LCD screen has backlight by type LCDs and Transflective LCDs etc.Most ofly backlightly comprise backlight, reflecting surface and scattering film by type (transimissive) LCD screen, backlight makes light even by scattering film, evenly not adding any obstruct between backlight part and the liquid crystal panel, be affected with the transmissivity of avoiding backlight.And the liquid crystal panel of Transflective (transflective) LCD screen also needs reflective back plane just can realize.This shows also there is not the LCD screen of complete transmission-type (see-through) at present, promptly the liquid crystal panel back does not have the LCD screen of backlight or any reflective back plane, and above-mentioned two kinds of LCDs all need power supply to power for a long time.Thereby designing liquid crystal indicator a kind of power saving, complete transmission-type is present urgent problem.
Summary of the invention
The object of the present invention is to provide a kind of smectic liquid crystal display device, this display device is powered by solar panel, and is complete transmission-type, very power saving, health environment-friendly.
In order to achieve the above object, the present invention has adopted following technical scheme:
A kind of smectic liquid crystal display device, it is characterized in that: it comprises smectic liquid crystal display screen, driving control device, accumulator and solar attachment, this smectic liquid crystal display screen, driving control device, accumulator, solar attachment links to each other successively, wherein: this smectic liquid crystal display screen comprises first base layer and second base layer, centre at this first base layer and second base layer is provided with a mixolimnion, this mixolimnion is formed by smectic phase liquid crystal and additives mixed, be provided with first conductive electrode layer at first base layer towards a side of mixolimnion, be provided with second conductive electrode layer at second base layer towards a side of mixolimnion, first conductive electrode layer is made up of M strip shaped electric poles that is arranged in parallel, second conductive electrode layer is made up of N strip shaped electric poles that is arranged in parallel, N strip shaped electric poles of the M of first conductive electrode layer strip shaped electric poles and second conductive electrode layer is perpendicular, so that this first and second conductive electrode layer forms the pixel array of one M * N, this first and second conductive electrode layer links to each other with driving control device; This solar attachment is at least one solar panel.
Solar attachment is to charge in batteries, when showing, accumulator is powered to driving control device, driving control device is according to the displaying scheme of setting, carry out R ripple and the output of D ripple in the mode that drives line by line, R ripple and D ripple are applied on the strip shaped electric poles of two conductive electrode layers, make two conductive electrode interlayers form a certain size, the voltage signal of frequency, change the arrangement form of smectic phase liquid crystal in the mixolimnion, make pixel present black, white or color state, thereby display screen demonstrate required literal or pattern.
Advantage of the present invention is:
1, owing to the electric signal that is applied to by drive control device controls on two conductive electrode layers, the smectic phase liquid crystal molecule can present different arrangement form, thereby smectic liquid crystal display screen can be changed between vaporific and full clear state, even between the multiple progressive state on different gray scales rank, switch, under the setting off of black solar panel backboard, display screen presents the white and black displays state.
2, because smectic liquid crystal display screen adopts the smectic phase liquid crystal to make, and the additive that mixes in it has conductive characteristic, so after removing electric signal, the show state that display screen produces in the time of still keeping on-load voltage has well " multistable " characteristic.And because this " multistable " characteristic, working current required for the present invention is little, only just need power up when changing the moment of Liquid Crystal Molecules Alignment form, and energy consumption is low.And because should " multistable " characteristic, the present invention almost have electromagnetic radiation, and smectic phase liquid crystal material itself just do not have any toxic action, so health environment-friendly of the present invention.
3, if be mixed with dichroic dye in the smectic liquid crystal display screen, then display screen can present versicolor pattern or literal, has very strong aesthetic property.
4, the R ripple and the D ripple of control output all are that bipolarity makes zero among the present invention, use such drive waveform smectic phase liquid crystal, can prolong the life-span of liquid crystal effectively, avoid the electrochemical reaction on surface.
5, the present invention adopts solar panel that accumulator or rechargeable battery are charged, and makes full use of natural conditions, and the civil power that does not need to continue is supplied with, and is suitable for the open air and installs and uses, and saves the energy.
Description of drawings
Fig. 1 is the composition synoptic diagram of smectic liquid crystal display device of the present invention;
Fig. 2 is the composition synoptic diagram of smectic liquid crystal display screen;
Fig. 3 is the smectic phase liquid crystal arrangement form synoptic diagram of low-frequency voltage when acting on first, second conductive electrode layer;
Fig. 4 is the smectic phase liquid crystal arrangement form synoptic diagram of HF voltage when acting on first, second conductive electrode layer;
Fig. 5 is smectic phase liquid crystal and the dichroic dye arrangement form synoptic diagram under the HF voltage effect;
Fig. 6 is smectic phase liquid crystal and the dichroic dye arrangement form synoptic diagram under the low-frequency voltage effect;
Fig. 7 is arranged in the first and second conductive electrode layer synoptic diagram of lattice array shape anyhow;
Fig. 8 is the Drive and Control Circuit theory of constitution block diagram of driving control device;
Fig. 9 is the circuit theory diagrams of R ripple generation module;
Figure 10 is the circuit theory diagrams of D ripple generation module;
Figure 11 is first kind of laminating type synoptic diagram of solar panel;
Figure 12 is second kind of laminating type synoptic diagram of solar panel;
Figure 13 is the waveform stack synoptic diagram of R ripple and D ripple;
Figure 14 is an instance graph of the type of drive of explanation smectic liquid crystal display screen.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
As shown in Figure 1, smectic liquid crystal display device of the present invention comprises smectic liquid crystal display screen 1, driving control device 2, accumulator 3 and solar attachment 4, and this smectic liquid crystal display screen 1, driving control device 2, accumulator 3, solar attachment 4 link to each other successively.During actual the use, the also available rechargeable battery of accumulator 3 substitutes.Solar attachment 4 is at least one solar panel 41.Solar attachment 4 receives the heat of the sun, solar thermal energy is converted to electric energy, and, is accumulator 3 chargings this electrical energy transfer accumulators 3, then 3 pairs of driving control devices of accumulator, 2 power supplies are so that driving control device 2 drives the demonstration of smectic liquid crystal display screen 1.
Extremely shown in Figure 4 as Fig. 2, smectic liquid crystal display screen 1 comprises first base layer 11 and second base layer 12, be provided with a mixolimnion 13 in the centre of this first base layer 11 and second base layer 12, this mixolimnion 13 is formed by smectic phase liquid crystal and additives mixed, promptly mix by smectic phase liquid crystal molecule 131 among the figure and additive molecule 1 32, be coated with first conductive electrode layer 14 at first base layer 11 towards a side of mixolimnion 13, be coated with second conductive electrode layer 15 at second base layer 12 towards a side of mixolimnion 13, as shown in Figure 7, first conductive electrode layer 14 is made up of M strip shaped electric poles 141 that is arranged in parallel, second conductive electrode layer 15 is made up of N strip shaped electric poles 151 that is arranged in parallel, N strip shaped electric poles 151 of the M of first conductive electrode layer 14 strip shaped electric poles 141 and second conductive electrode layer 15 is perpendicular, so that this first conductive electrode layer 14 and second conductive electrode layer 15 form the pixel-matrix array structure of one M * N, a strip shaped electric poles 141 and a strip shaped electric poles 151 form a pixel, pixel 7 for example shown in Figure 7.This first conductive electrode layer 14 links to each other with driving control device 2 with second conductive electrode layer 15.These two conductive electrode layers 14 and 15 and middle mixolimnion 13 formed a capacitance structure that area is very big, each pixel is a capacitance structure that independent area is very little.First conductive electrode layer 14 and second conductive electrode layer 15 are transparent, and it can be ITO (tin indium oxide) etc., and can use auxiliary metal electrode as required, as aluminium, copper, silver etc.
Smectic liquid crystal display screen 1 as shown in Figure 2, in actual applications, the material of first base layer 11 and second base layer 12 is chosen as glass or plastics.For example, first base layer 11 and second base layer 12 are glass, and perhaps first base layer 11 and second base layer 12 are plastics, and perhaps in first base layer 11 and second base layer 12 is a glass, and another is plastics.Wherein, plastics can be transparent plastic film, transparent hard plastic plate.
Generally, the THICKNESS CONTROL of mixolimnion 13 is at 2 microns～30 microns, and in mixolimnion 13, the smectic phase liquid crystal accounts for and mixes 90%～99.999% of general assembly (TW), and additive accounts for and mixes 0.001%～10% of general assembly (TW).Usually, in the time of between room temperature ± 50 ℃, smectic phase liquid crystal molecule 131 clusters are the layered arrangement structure, present the starchiness of thickness.In the present invention, the smectic phase liquid crystal is category-A smectic phase liquid crystal (Smectic-A) organic compound, as with silica-based compound, four cyano four octyl group biphenyl, tetraacethyl ester in last of the ten Heavenly stems four cyano biphenyl etc.Additive is the compound of band conductive characteristic, contains the compound of conductive ion as cetyltriethylammonium bromide etc.
In actual applications, additive can suitably add with the thickness of mixolimnion 13, and as when mixolimnion thickness is 30 microns, additive can be controlled in to account for and mixes 0.001% of general assembly (TW).Certainly, this thickness range and additive doping content ratio be very tight regulation not, if with THICKNESS CONTROL between 2 microns to 30 microns, with additive be controlled at account for mix general assembly (TW) 0.001% to 10% between get final product.
During actual fabrication, the potpourri that smectic phase liquid crystal and additives mixed form is to record in the crack of 12 of first base layer 11 and second base layers, and promptly mixolimnion 13 forms for recording.This records process and traditional STN (Super Twisted Nematic, the nematic state liquid crystal of reinforcement distortion) process of recording is similar, different is: the process of recording that the present invention uses does not have traditional STN to record three links of paster of PI (polyimide, polyimide) the brush system of oriented layer, the paster of light polarizing film and color screen in the process.And because the problem of the viscosity of smectic phase liquid crystal material own, before recording the smectic phase liquid crystal that is mixed with additive, need be heated uniform temperature, be generally more than 60 ℃, show as mobilely when liquid up to the smectic phase liquid crystal that is mixed with additive, just can use traditional STN process of recording to carry out vacuum and record.
As shown in Figure 8, be provided with Drive and Control Circuit in the driving control device 2, this Drive and Control Circuit comprises control module 21, a M R ripple generation module 22 and N D ripple generation module 23, control module 21 is connected with D ripple generation module 23 with all R ripple generation modules 22, and R ripple generation module 22 is connected with smectic liquid crystal display screen 1 with D ripple generation module 23.
R ripple generation module 22 comprises the first positive level converter unit 221, the first negative level converter unit 222, the first forward signal generation unit 223, the first negative-going signal generation unit 224 and first signal synthesis unit 225.This first forward signal generation unit 223 is connected with control module 21 through the first positive level converter unit 221, this first negative-going signal generation unit 224 is connected with control module 21 through the first negative level converter unit 222, this first forward signal generation unit 223 is connected with first signal synthesis unit 225 with the first negative-going signal generation unit 224, and this first signal synthesis unit 225 is connected with a strip shaped electric poles 141 of first conductive electrode layer 14.
D ripple generation module 23 comprises the second positive level converter unit 231, the second negative level converter unit 232, the second forward signal generation unit 233, the second negative-going signal generation unit 234, true amplitude control module 235, negative amplitude control module 236 and secondary signal synthesis unit 237.This second forward signal generation unit 233 is connected with control module 21 through the second positive level converter unit 231, this second negative-going signal generation unit 234 is connected with control module 21 through the second negative level converter unit 232, true amplitude control module 235 is connected with the second forward signal generation unit 233, negative amplitude control module 236 is connected with the second negative-going signal generation unit 234, this second forward signal generation unit 233 is connected with secondary signal synthesis unit 237 with the second negative-going signal generation unit 234, and this secondary signal synthesis unit 237 is connected with a strip shaped electric poles 151 of second conductive electrode layer 15.
Fig. 9 and Figure 10 are respectively the physical circuit figure of R ripple generation module, D ripple generation module.As Fig. 9 and shown in Figure 10, all CMOS phase inverters are by enhancement mode PMOS pipe and the complementary formation of enhancement mode NMOS pipe, the PMOS pipe links to each other as the input end of CMOS phase inverter with the grid of NMOS pipe, and the PMOS pipe links to each other as the output terminal of CMOS phase inverter with the drain electrode of NMOS pipe.
As shown in Figure 9, the first positive level converter unit 221 comprises a CMOS phase inverter CMOS1, PMOS pipe VT1 links to each other as the input end InR+ of phase inverter CMOS1 with the grid of NMOS pipe VT2, PMOS pipe VT1 links to each other as the output terminal OutR+ (formation of following phase inverter is similar to phase inverter CMOS1, repeats no more) of phase inverter CMOS1 with the drain electrode of NMOS pipe VT2.The input end InR+ of this phase inverter CMOS1 links to each other with its corresponding signal output part Out1 on a capacitor C 1 and control module 21, the first forward signal generation unit 223 comprises a high pressure NMOS transistor VT5, the grid of this high pressure NMOS transistor VT5 links to each other with the output terminal OutR+ of the phase inverter CMOS1 of the first positive level converter unit 221, and the drain electrode of this high pressure NMOS transistor VT5 links to each other with an input end drvR+ of first signal synthesis unit 225 through a capacitor C 3.Similarly, the first negative level converter unit 222 comprises a CMOS phase inverter CMOS2, the input end InR-of this phase inverter CMOS2 links to each other with its corresponding signal output part Out2 on a capacitor C 2 and control module 21, the first negative-going signal generation unit 224 comprises a high voltage PMOS transistor VT6, the grid of this high voltage PMOS transistor VT6 links to each other with the output terminal OutR-of the phase inverter CMOS2 of the first negative level converter unit 222, the drain electrode of this high voltage PMOS transistor VT6 links to each other with another input end drvR-of first signal synthesis unit 225 through a capacitor C 4, and the output terminal Out_R of first signal synthesis unit 225 links to each other with a strip shaped electric poles 141 of first conductive electrode layer 14.
As shown in figure 10, the second positive level converter unit 231 comprises a CMOS phase inverter CMOS3, the input end InD+ of this phase inverter CMOS3 links to each other with its corresponding signal output part Out3 on a capacitor C 5 and control module 21, the second forward signal generation unit 233 comprises a high pressure NMOS transistor VT11, the grid of this high pressure NMOS transistor VT11 links to each other with the output terminal OutD+ of the phase inverter CMOS3 of the second positive level converter unit 231, the drain electrode of this high pressure NMOS transistor VT11 is divided into two-way, one the tunnel links to each other with the input end of true amplitude control module 235 through a resistance R 4, and another Lu Jingyi capacitor C 7 links to each other with an input end drvD+ of secondary signal synthesis unit 237.Similarly, the second negative level converter unit 232 comprises a CMOS phase inverter CMOS4, the input end InD-of this phase inverter CMOS4 links to each other with its corresponding signal output part Out4 on a capacitor C 6 and control module 21, the second negative-going signal generation unit 234 comprises a high voltage PMOS transistor VT12, the grid of this high voltage PMOS transistor VT12 links to each other with the output terminal OutD-of the phase inverter CMOS4 of the second negative level converter unit 232, the drain electrode of this high voltage PMOS transistor VT12 is divided into two-way, one the tunnel links to each other with the input end of negative amplitude control module 236 through a resistance R 5, another Lu Jingyi capacitor C 8 links to each other with another input end drvD-of secondary signal synthesis unit 237, and the output terminal Out_D of secondary signal synthesis unit 237 links to each other with a strip shaped electric poles 151 of second conductive electrode layer 15.
In Fig. 9 and Figure 10, control module 21 can be single-chip microcomputer or FPGA, positive and negative amplitude control module 235 and 236 can be transformer, first, second signal synthesis unit 225 and 237 can be made of a plurality of diodes, by behind the diode, both synthesize a bidirectional pulse to positive negative pulse stuffing respectively.Control module 21 is used to control the R ripple output of each R ripple generation module 22 and the D ripple output of each D ripple generation module 23.A R ripple generation module 22 links to each other with two signal output parts of control module 21, exports a R ripple, and this R ripple acts on the strip shaped electric poles 141.Similarly, a D ripple generation module 23 links to each other with two signal output parts of control module 21, exports a D ripple, and this D ripple acts on the strip shaped electric poles 151.Control module 21 needs 2M+2N signal output part to finish the output of R ripple and D ripple control, the outputs of two common waveforms of control of signal output parts (R ripple or D ripple) altogether.
Principle of work to Drive and Control Circuit is described below.
According to driving requirement, general ,+VH is 12V, and-VH is-12V, and+Vpp is 100V ,-Vpp is-100V.When needs output R ripple, the signal output part Out1 of control module 21 and Out2 output amplitude are the positive pulse of 5V, this amplitude is that the positive pulse of 5V is carried out level translation by phase inverter CMOS1, output terminal OutR+ output amplitude by phase inverter CMOS1 is the positive pulse of 12V, this amplitude is that the positive pulse of 12V is passed through high pressure NMOS transistor VT5 more then, is the high pressure positive pulse of 100V by the drain electrode output amplitude of transistor VT5.Similarly, this amplitude is that the positive pulse of 5V is carried out level translation by phase inverter CMOS2, output terminal OutR-output amplitude by phase inverter CMOS2 is-negative pulse of 12V, this amplitude is passed through high voltage PMOS transistor VT6 again for the negative pulse of-12V then, by the drain electrode output amplitude of transistor VT6 is-the high pressure negative pulse of 100V.Then, to carry out pulse synthetic for the high pressure positive negative pulse stuffing of ± 100V enters first signal synthesis unit 225 by input end drvR+ and drvR-respectively for amplitude, output terminal Out_R output amplitude by first signal synthesis unit 225 is ± bidirectional pulse of 100V, and this bidirectional pulse is the R ripple.
When needs output D ripple, the signal output part Out3 of control module 21 and Out4 output amplitude are the positive pulse of 5V, this amplitude is that the positive pulse of 5V is carried out level translation by phase inverter CMOS3, output terminal OutD+ output amplitude by phase inverter CMOS3 is the positive pulse of 12V, this amplitude is that the positive pulse of 12V is passed through high pressure NMOS transistor VT11 more then, because Vpp is become 50V to true amplitude control module 235 to the drain electrode of transistor VT11 power supply, so be the high pressure positive pulse of 50V by the drain electrode output amplitude of transistor VT11.Similarly, this amplitude is that the positive pulse of 5V is carried out level translation by phase inverter CMOS4, output terminal OutD-output amplitude by phase inverter CMOS4 is-negative pulse of 12V, this amplitude is passed through high voltage PMOS transistor VT12 again for the negative pulse of-12V then, because negative amplitude control module 236 general-Vpp become-and 50V and powering to the drain electrode of transistor VT12, so be-the high pressure negative pulse of 50V by the drain electrode output amplitude of transistor VT12.Then, to carry out pulse synthetic for the high pressure positive negative pulse stuffing of ± 50V enters secondary signal synthesis unit 237 by input end drvD+ and drvD-respectively for amplitude, output terminal Out_D output amplitude by secondary signal synthesis unit 237 is ± bidirectional pulse of 50V, and this bidirectional pulse is the D ripple.
In the practical application, the R wave amplitude of control output is more than or equal to 100V, and correspondingly, the D wave amplitude is more than or equal to 50V.In circuit, choose reasonable power supply, resistance make output waveform satisfy formula (R wave amplitude-D wave amplitude)＜threshold voltage magnitude＜(R wave amplitude+D wave amplitude) and get final product.
In the present invention, solar attachment 4 fits on the side of smectic liquid crystal display screen 1, and as the backboard of smectic liquid crystal display screen 1, its laminating type has multiple, and Figure 11 and Figure 12 show two kinds of laminating types wherein.As Figure 11, first kind of laminating type is that the base plate 412 with a slice solar panel 41 sticks on the smectic liquid crystal display screen 1, and dash receiver 411 is exposed to the outside fully and fully absorbs sunshine.As Figure 12, second kind of laminating type is that the base plate 412 with two solar panels 41 is pasted together, and wherein the dash receiver 411 of a slice solar panel 41 sticks on the smectic liquid crystal display screen 1 again.Because smectic liquid crystal display screen 1 is the transmission-type display mode, so when the partial pixel point of smectic liquid crystal display screen 1 is the bright state of full impregnated, the dash receiver 411 of that sheet solar panel 41 of pasting with smectic liquid crystal display screen 1 also can receive sunshine, as seen, this laminating type has greatly increased the area that receives light, makes solar panel 41 absorb luminous energy fully.
Specifically describe principle of work of the present invention below.
As Fig. 7, first conductive electrode layer 14 and second conductive electrode layer 15 have formed the pixel-matrix array structure of a M * N, perpendicular two strip shaped electric poles 141,151 form a pixel, so the pixel of controlling its formation jointly in the voltage magnitude and the frequency of 141,151 generations of these two strip shaped electric poles is bright dark.Output is the R ripple on the strip shaped electric poles 141, and output is the D ripple on the strip shaped electric poles 151, and the voltage between two strip shaped electric poles is the stack of R ripple and D ripple.
As shown in figure 13, if the R ripple is identical with the D wave frequency, phase place is identical, the pulse amplitude that the stack back forms is less than the amplitude of threshold voltage, and pixel can not change so.If the R ripple is identical with the D wave frequency, but the phase place phase difference of half cycle, i.e. D ' waveform shown in the figure and R waveform, the pulse amplitude that the stack back forms is greater than threshold voltage magnitude, pixel just can change so, with respect to for the solar panel 41 of backboard, show as by bright deepening, or by secretly brightening.Threshold voltage among the figure is to determine according to the composition of mixolimnion 13 and thickness, is generally more than the 50V.If the waveforms amplitude after the stack is greater than threshold voltage magnitude, and frequency is about 50Hz, then pixel is by secretly brightening.If the waveforms amplitude after the stack is greater than threshold voltage magnitude, and frequency is about 1000Hz, then pixel is by bright deepening.Describe in detail below.
As shown in Figure 3, when the after-applied voltage magnitude two conductive electrode layers 14 and 15 of R ripple and D ripple stack greater than threshold voltage magnitude, and frequency control is at 50Hz to 200Hz, as apply ± bidirectional pulse about 100v, 50Hz, so, when voltage action time during less than 1 second, the smectic phase liquid crystal molecule 131 in the mixolimnion 13 just twists, and forms out of order arrangement form shown in Figure 3.Because each of smectic phase liquid crystal molecule 131 (promptly passed through the long optical axis difference of each liquid crystal to diversity owing to incident ray, the anaclasis angle difference of each liquid crystal, thereby the refractive index difference of each liquid crystal), make the ray refraction of each smectic phase liquid crystal molecule 131 of incident exist very big difference, promptly in the mixolimnion 13 of this meagre thickness, optical index is producing violent variation, thereby strong scattering has taken place in light, on macroscopic view, this astigmatism effect presents a kind of as the vaporific state as the acute-matte, solar panel backboard at black sets off down, and it is bright that pixel shows as by dark driving, is promptly bleached by black.
As shown in Figure 4, when the after-applied voltage magnitude two conductive electrode layers 14 and 15 of R ripple and D ripple stack greater than threshold voltage magnitude, and frequency control is more than 1000Hz, as apply ± 100v, bidirectional pulse about 1000Hz, so, when voltage action time during less than 1 second, smectic phase liquid crystal molecule 131 in the mixolimnion 13 just becomes regularly arranged form, at this moment, the long optical axis of smectic phase liquid crystal molecule 131 is perpendicular to the conductive electrode layer plane, and the ray refraction of each smectic phase liquid crystal molecule 131 of incident does not produce acute variation, light can freely see through mixolimnion 13, therefore, on macroscopic view, present the bright state of a kind of full impregnated, display screen is crossed in the complete transmission of light, solar panel backboard at black sets off down, and it is dark that pixel shows as by bright driving, promptly black by leucismus.
After being driven for two conductive electrode layers 14 and 15 on-load voltages and pixel to change, just can remove two conductive electrode layers 14 and 15 voltages that apply.And the maintenance of this luminous effect of pixel does not need voltage to keep, promptly remove voltage after, the luminous effect that pixel produces in the time of still can keeping on-load voltage, and the voltage signal of effect is just in order to change the arrangement form of smectic phase liquid crystal molecule 131.In the present invention, this state that does not need electricity to drive and keep luminous effect is called " multistable " or " quasistatic ".And this " multistable " is because the additive molecule 1 32 in the mixolimnion 13 has adopted the compound of band conductive characteristic, when electric signal is applied on two conductive electrode layers 14 and 15, ion in the compound of band conductive characteristic changes the generation to-and-fro movement according to electric potential difference, this motion can change the arrangement form of liquid crystal molecule 131, and liquid crystal molecule 131 arrangement form after changing do not need the persistent movement of ion to keep, and are stable." multistable " effect that this smectic phase liquid crystal and additive produce and liquid crystal polymer technology produce, and to keep effect different, and the liquid crystal that has added high molecular polymer in the liquid crystal polymer technology is to lean on surface force, intermolecular force and friction force in the number of polymers network to keep.
Certainly, when reality is implemented, be applied to voltage swing, frequency or action time on two conductive electrode layers 14 and 15 by reasonable control, can make the arrangement form of smectic phase liquid crystal molecule 131 become the part distortion, to produce astigmatic effect in various degree, producing multiple progressive state between vaporific and bright two states of full impregnated showing as on the macroscopic view,, thereby making pixel present the color of different gray scales as translucent etc. with different gray scales rank.
More than be the description to the bright dark variation of a certain pixel, for the demonstration of whole smectic liquid crystal display screen 1, its type of drive is carried out according to certain rule.Classify example as with pixel-matrix shown in Figure 14 below, the type of drive of smectic liquid crystal display screen 1 is described.
As Figure 14, this pixel-matrix is classified 3 * 3 array as, R1～R3 is the control signal source, each control signal source is by the corresponding R waveform of control module 21 control outputs, each control signal source is to a strip shaped electric poles 141 outputs one fixed waveform R ripple of one first conductive electrode layer 14, D1～D3 is a data signal source, and each data signal source is by the corresponding D waveform of control module 21 control outputs, and each data signal source is to a strip shaped electric poles 151 outputs one control waveform D ripple of one second conductive electrode layer 15.T11, T12, T13, T21, T22, T23, T31, T32, T33 are the pixel that two strip shaped electric poles form, for example, T11 is the pixel that the first row strip shaped electric poles on the row strip shaped electric poles of first on first conductive electrode layer 14 and second conductive electrode layer 15 forms, this pixel is controlled jointly by the waveform of R1 and D1 output, to drive this pixel, it is bright or dark that pixel is shown as.
During driving, control module 21 is pressed the waveform output of display requirement control R ripple and D ripple, process is: at first, make R1～R3 and D1～D3 for closing, R1 exports fixing R ripple then, R2 and R3 close, do not export the R ripple, the required data-signal of D1～D3 serial input (the D ripple identical with the R wave phase shown in Figure 13, or with the D ' ripple in R wave phase phase difference of half cycle) is deposited and is opened simultaneously through register, to each row while input signal, at this moment, all pixels of first row are driven and are shown as the black and white state that needs, and other pixel does not change.Then, R1 and R3 close, and R2 opens, output R ripple, D1～new the data-signal of D3 serial input deposits and opens simultaneously through register, to each row while input signal, at this moment, all pixels of second row are driven and are shown as the black and white state that needs, and other pixel does not change.In like manner, below each row driven successively, make each pixel become required state, lined by line scan the literal or the pattern that display screen are demonstrated need until entire display screen.
To shown in Figure 6, in mixolimnion 13, also can be mixed with a certain amount of dichroic dye, as Fig. 5 as flaxen azo group dichroic dye.By mixing dichroic dye, can make mixolimnion 13 bright and have between the coloured light and change at full impregnated.Dichroic dye is selected the dichroic dye that is long molecularity for use, the optical axis similar of this dichroic dye and smectic phase liquid crystal.In parallel direction along long optical axis, a little less than the absorption very of 33 pairs of light of this dichroic dye molecule 1, and the vertical direction of the long optical axis in edge, this dichroic dye molecule 1 33 can absorb the light of certain wave band dramatically.
As shown in Figure 5, on two conductive electrode layers 14 and 15, apply ± 100v, during the above bidirectional pulse of 1000Hz, be used as with time during less than 1 second, smectic phase liquid crystal molecule 131 and dichroic dye molecule 1 33 in the mixolimnion 13 all become regularly arranged form, at this moment, the long optical axis of liquid crystal molecule 131 and the long optical axis of dichroic dye molecule 1 33 are all perpendicular to the conductive electrode layer plane, therefore, the ray refraction of each smectic phase liquid crystal molecule 131 of incident does not produce acute variation, and because the long optical axis of dichroic dye molecule 1 33 is perpendicular to the conductive electrode layer plane, light is along the parallel direction incident of dichroic dye molecule 1 33 long optical axises, 33 of dichroic dye molecule 1s absorb small light (this absorbing amount depends on regularly arranged degree and the solubleness of dye molecule 133 with respect to liquid crystal molecule 131), so incident ray 5 is through behind the mixolimnion 13, have only a small amount of light to be absorbed, the final mixolimnion 13 that freely sees through, as the ejaculation light 6 among Fig. 5, therefore, on macroscopic view, present the bright state of full impregnated this moment, solar panel backboard at black sets off down, it is dark that pixel shows as by bright driving, i.e. blackening.
As shown in Figure 6, on two conductive electrode layers 14 and 15, apply ± during the bidirectional pulse of 100v, 50Hz, be used as with time during less than 1 second, smectic phase liquid crystal molecule 131 in the mixolimnion 13 becomes the out of order arrangement form of reversing, and because dichroic dye molecule 1 33 is very little with smectic phase liquid crystal molecule 131 spacings, so when smectic phase liquid crystal molecule 131 reverses, it is disorderly and unsystematic that dichroic dye molecule 1 33 also becomes thereupon, even the long optical axis of a large amount of dye molecules 133 is parallel to the conductive electrode layer plane.When light 5 was injected mixolimnion 13, because the ray refraction difference of each smectic phase liquid crystal molecule 131, strong scattering took place in light.Under the scattering that smectic phase liquid crystal molecule 131 produces, a large amount of light are injected dye molecule 133 along the vertical direction of dye molecule 133 long optical axises, thereby the light of certain wave band is greatly absorbed by dye molecule 133, the light 6 that scatters presents the color (color that presents is difference with the difference of dichroic dye structure) of dye molecule, like this, on macroscopic view, present certain fuzzy color this moment, solar panel backboard at black sets off down, it is bright that pixel shows as by dark driving, promptly becomes a kind of color.This color realizes by dyes in different colors is mixed with the smectic phase liquid crystal, if make dye molecule 133 evenly absorb visible light, even can realize the grey black look.
Above-mentioned smectic phase liquid crystal molecule 131 is long molecularity, and the smectic phase liquid crystal molecule 131 of this long molecularity has very strong birefraction.In actual applications, can adjust the strand of smectic phase liquid crystal molecule 131, reduce the birefraction of smectic phase liquid crystal molecule 131, like this, be parallel to smectic phase liquid crystal molecule 131 long optical axis directions and perpendicular to smectic phase liquid crystal molecule 131 long optical axis directions on, the refractive index that light passes through is very approaching, the scattering effect of the liquid crystal molecule 131 during twisted state can weaken thereupon thus, strong astigmatic phenomenon can not appear in the mixolimnion 13 that has added dyestuff, but dye molecule 133 a large amount of light that absorb certain wavelength coverage, the coloured filter of image-tape is the same, makes pixel present unambiguous colored state.Certainly, above-mentioned mixolimnion 13 of sneaking into dyestuff is realized " multistable " characteristic by additive equally.
In the practical application, display screen can be made as the black and white screen or the color line screen of individual layer, also can a plurality of screens are superimposed, make the screen of a multilayer.For example, three smectic liquid crystal display screens 1 are superposeed, form three layers of screen, in every layer of screen different mixed dyes is set rationally, as ultramarine, fuchsin and yellow, solar panel backboard at black sets off down so, and this display screen can realize that just a kind of indigo plant, red, yellow, black colour show.
Advantage of the present invention is:
1, owing to the signal of telecommunication that is applied to by drive control device controls on two conductive electrode layers, smectic phase liquid crystal branch Son can present different arrangement form, thereby smectic liquid crystal display screen can turn between vaporific and all-transparent attitude Change, even between the multiple progressive state on different gray scales rank, switch, under the setting off of black solar panel backboard, Display screen presents the white and black displays state.
2, because smectic liquid crystal display screen adopts the smectic phase liquid crystal to make, it is special that the additive that mixes in it has conduction The property, so after removing the signal of telecommunication, the show state that display screen produces in the time of still keeping on-load voltage has well " multistable " characteristic. And because this " multistable " characteristic, operating current required for the present invention is little, only exists Just need to power up when changing moment of Liquid Crystal Molecules Alignment form, energy consumption is low. And owing to be somebody's turn to do " multistable " characteristic, The present invention does not almost have electromagnetic radiation, and smectic phase liquid crystal material itself just do not have any toxic action, so the present invention Health environment-friendly.
If be mixed with dichroic dye in 3 smectic liquid crystal display screens, then display screen can present versicolor figure Case or literal have very strong aesthetic property.
4, R ripple and the D ripple of control output all are that bipolarity makes zero among the present invention, use such drive waveform The smectic phase liquid crystal can prolong life-span of liquid crystal effectively, avoids the electrochemical reaction on surface.
5, the present invention adopts solar panel that battery or rechargeable battery are charged, and takes full advantage of natural conditions, The civil power that does not need to continue is supplied with, and is suitable for outdoor installation and uses, and saves the energy.
The present invention is complete transmission-type liquid crystal display screen, and it can be used as traffic indicated number device, open air or military open country External display device.
Claims (10)
1, a kind of smectic liquid crystal display device, it is characterized in that: it comprises smectic liquid crystal display screen, driving control device, accumulator and solar attachment, this smectic liquid crystal display screen, driving control device, accumulator, solar attachment link to each other successively, wherein:
This smectic liquid crystal display screen comprises first base layer and second base layer, centre at this first base layer and second base layer is provided with a mixolimnion, this mixolimnion is formed by smectic phase liquid crystal and additives mixed, be provided with first conductive electrode layer at first base layer towards a side of mixolimnion, be provided with second conductive electrode layer at second base layer towards a side of mixolimnion, first conductive electrode layer is made up of M strip shaped electric poles that is arranged in parallel, second conductive electrode layer is made up of N strip shaped electric poles that is arranged in parallel, N strip shaped electric poles of the M of first conductive electrode layer strip shaped electric poles and second conductive electrode layer is perpendicular, so that this first and second conductive electrode layer forms the pixel array of one M * N, this first and second conductive electrode layer links to each other with driving control device;
This solar attachment is at least one solar panel.
2, smectic liquid crystal display device according to claim 1 is characterized in that:
Described first base layer and second base layer are glass, and perhaps described first base layer and second base layer are plastics, and perhaps in first base layer and second base layer is a glass, and another is plastics.
3, smectic liquid crystal display device according to claim 1 is characterized in that:
The thickness of described mixolimnion is 2 microns～30 microns, the consisting of of described mixolimnion: described smectic phase liquid crystal accounts for and mixes 90%～99.999% of general assembly (TW), and described additive accounts for and mixes 0.001%～10% of general assembly (TW).
4, according to claim 1 or 3 described smectic liquid crystal display devices, it is characterized in that:
Described smectic phase liquid crystal is a category-A smectic phase liquid crystal organic compound, and described additive is the compound of band conductive characteristic.
5, smectic liquid crystal display device according to claim 4 is characterized in that:
Described smectic phase liquid crystal is with in silica-based compound, four cyano four octyl group biphenyl or tetraacethyl ester in the last of the ten Heavenly stems four cyano biphenyl any.
6, smectic liquid crystal display device according to claim 4 is characterized in that:
Described additive is a cetyltriethylammonium bromide.
7, smectic liquid crystal display device according to claim 1 is characterized in that:
Described solar attachment fits on the side of described smectic liquid crystal display screen.
8, smectic liquid crystal display device according to claim 1 is characterized in that:
Described mixolimnion also is mixed with dichroic dye.
9, smectic liquid crystal display device according to claim 1 is characterized in that:
Be provided with Drive and Control Circuit in the described driving control device, this Drive and Control Circuit comprises control module, a M R ripple generation module and N D ripple generation module, wherein:
R ripple generation module comprises the first positive level converter unit, the first negative level converter unit, the first forward signal generation unit, the first negative-going signal generation unit and first signal synthesis unit, this first forward signal generation unit is connected with control module through the first positive level converter unit, this first negative-going signal generation unit is connected with control module through the first negative level converter unit, this first forward signal generation unit is connected with first signal synthesis unit with the first negative-going signal generation unit, and this first signal synthesis unit is connected with a strip shaped electric poles of described first conductive electrode layer;
D ripple generation module comprises the second positive level converter unit, the second negative level converter unit, the second forward signal generation unit, the second negative-going signal generation unit, the true amplitude control module, negative amplitude control module and secondary signal synthesis unit, this second forward signal generation unit is connected with control module through the second positive level converter unit, this second negative-going signal generation unit is connected with control module through the second negative level converter unit, just, negative amplitude control module respectively with the second forward signal generation unit, the second negative-going signal generation unit connects, this second forward signal generation unit is connected with the secondary signal synthesis unit with the second negative-going signal generation unit, and this secondary signal synthesis unit is connected with a strip shaped electric poles of described second conductive electrode layer.
10, smectic liquid crystal display device according to claim 9 is characterized in that:
The described first positive level converter unit comprises a CMOS phase inverter, the input end of this CMOS phase inverter links to each other with its corresponding signal output part on an electric capacity and described control module, the described first forward signal generation unit comprises a high pressure NMOS transistor, the transistorized grid of this high pressure NMOS links to each other with the output terminal of the CMOS phase inverter of the described first positive level converter unit, and this high pressure NMOS transistor drain links to each other with an input end of described first signal synthesis unit through an electric capacity;
The described first negative level converter unit comprises a CMOS phase inverter, the input end of this CMOS phase inverter links to each other with its corresponding signal output part on an electric capacity and described control module, the described first negative-going signal generation unit comprises a high voltage PMOS transistor, the grid of this high voltage PMOS transistor links to each other with the output terminal of the CMOS phase inverter of the described first negative level converter unit, and the drain electrode of this high voltage PMOS transistor links to each other with another input end of described first signal synthesis unit through an electric capacity;
The described second positive level converter unit comprises a CMOS phase inverter, the input end of this CMOS phase inverter links to each other with its corresponding signal output part on an electric capacity and described control module, the described second forward signal generation unit comprises a high pressure NMOS transistor, the transistorized grid of this high pressure NMOS links to each other with the output terminal of the CMOS phase inverter of the described second positive level converter unit, this high pressure NMOS transistor drain is divided into two-way, one the tunnel links to each other with described true amplitude control module through a resistance, and another Lu Jingyi electric capacity links to each other with an input end of described secondary signal synthesis unit;
The described second negative level converter unit comprises a CMOS phase inverter, the input end of this CMOS phase inverter links to each other with its corresponding signal output part on an electric capacity and described control module, the described second negative-going signal generation unit comprises a high voltage PMOS transistor, the grid of this high voltage PMOS transistor links to each other with the output terminal of the CMOS phase inverter of the described second negative level converter unit, the drain electrode of this high voltage PMOS transistor is divided into two-way, one the tunnel links to each other with described negative amplitude control module through a resistance, and another Lu Jingyi electric capacity links to each other with another input end of described secondary signal synthesis unit.
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Cited By (6)
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| CN102135663A (en) * | 2011-02-18 | 2011-07-27 | 福耀玻璃工业集团股份有限公司 | HUD (Head Up Display) front windshield of automobile |
| CN102565912A (en) * | 2010-12-14 | 2012-07-11 | 住友化学株式会社 | Method for producing polarizer film |
| CN103969852A (en) * | 2013-01-31 | 2014-08-06 | 苏州汉朗光电有限公司 | Dynamic aging method for smectic liquid crystal display |
| KR20170041096A (en) * | 2015-10-06 | 2017-04-14 | 엘지디스플레이 주식회사 | Light controlling device, transparent display device including the same, and method for fabricating the same |
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| RU2183864C2 (en) * | 1999-08-04 | 2002-06-20 | ОПТИВА, Инк. | Information displaying module |
| CN101059607A (en) * | 2006-04-17 | 2007-10-24 | 孙刚 | Electrically-controlled liquid crystal light modulation glass and film |
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| CN102565912A (en) * | 2010-12-14 | 2012-07-11 | 住友化学株式会社 | Method for producing polarizer film |
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| CN102135663A (en) * | 2011-02-18 | 2011-07-27 | 福耀玻璃工业集团股份有限公司 | HUD (Head Up Display) front windshield of automobile |
| CN102135663B (en) * | 2011-02-18 | 2013-09-18 | 福耀玻璃工业集团股份有限公司 | HUD (Head Up Display) front windshield of automobile |
| CN103969852A (en) * | 2013-01-31 | 2014-08-06 | 苏州汉朗光电有限公司 | Dynamic aging method for smectic liquid crystal display |
| CN103969852B (en) * | 2013-01-31 | 2016-11-23 | 苏州汉朗光电有限公司 | A kind of dynamic aging method of smectic liquid crystal display screen |
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| CN113842150A (en) * | 2021-09-24 | 2021-12-28 | 北京三春晖医疗器械有限公司 | R wave acquisition method and system |
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Denomination of invention: Smectic state LCD device Effective date of registration: 20190603 Granted publication date: 20120208 Pledgee: Societe Generale Bank Co.,Ltd. Suzhou Branch Pledgor: HALATION PHOTONICS Corp. Registration number: 2019320010024 |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120208 Termination date: 20211227 |
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| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20221201 Granted publication date: 20120208 Pledgee: Societe Generale Bank Co.,Ltd. Suzhou Branch Pledgor: HALATION PHOTONICS Corp. Registration number: 2019320010024 |