CN103293738A - Liquid crystal display device and control method thereof - Google Patents
Liquid crystal display device and control method thereof Download PDFInfo
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- CN103293738A CN103293738A CN2012104032820A CN201210403282A CN103293738A CN 103293738 A CN103293738 A CN 103293738A CN 2012104032820 A CN2012104032820 A CN 2012104032820A CN 201210403282 A CN201210403282 A CN 201210403282A CN 103293738 A CN103293738 A CN 103293738A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
- G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13731—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on a field-induced phase transition
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13781—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering using smectic liquid crystals
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2300/00—Aspects of the constitution of display devices
- G09G2300/02—Composition of display devices
- G09G2300/023—Display panel composed of stacked panels
Abstract
The embodiment of the invention discloses a liquid crystal display device, which comprises a liquid crystal display panel, a display control panel, wherein the display control panel comprises a first baseplate and a second baseplate oppositely arranged, a liquid crystal layer arranged between the first baseplate and the second baseplate and electrode layers arranged on one sides, facing the liquid crystal layer, of the first baseplate and the second baseplate respectively; and the liquid crystal layer is a smectic phase dual-frequency liquid crystal layer or a polymer dispersed liquid crystal layer. Through the liquid crystal layer in the display control panel, a picture of the liquid crystal display panel and the picture of an article displayed in a postpositional display window can be switched, and can be displayed at the same time, so that the interactive display effect of the liquid crystal display device and articles of the display window is realized.
Description
Technical field
The present invention relates to the display technique field, relate in particular to a kind of liquid crystal indicator and control method thereof.
Background technology
Develop rapidly along with lcd technology, research to transparent display device is also being carried out energetically, described transparent display device is except can realizing thereon that image shows, can also see the thing of display screen back, transparent display device like this can be applied to aspects such as glass housing, display case glass, to realize the display effect of augmented reality (Agumented Reality).
But existing transparent display device is as display case glass the time, and its display effect to article in the display case is unsatisfactory.
Summary of the invention
For solving the problems of the technologies described above, the embodiment of the invention provides a kind of liquid crystal indicator, utilizes this liquid crystal indicator, can improve the display effect to article in the display case, and power consumption is less.
This liquid crystal indicator comprises:
Display panels, display control panel; Described display control panel comprises:
First substrate that is oppositely arranged and second substrate;
Be arranged at the liquid crystal layer between described first substrate and second substrate;
Be arranged at described first substrate and second substrate respectively towards the electrode layer of described liquid crystal layer one side;
Wherein, described liquid crystal layer is smectic phase dual-frequency liquid crystal layer or polymer dispersed liquid crystal layer.
Preferably, described smectic phase dual-frequency liquid crystal is the positivity liquid crystal characteristic under the low-frequency voltage effect; Described smectic phase dual-frequency liquid crystal is the negative liquid crystal characteristic under the HF voltage effect.
Preferably, described smectic phase dual-frequency liquid crystal layer does not have scattering process to the light of incident under the low-frequency voltage effect; Described smectic phase dual-frequency liquid crystal layer has scattering process to the light of incident under the HF voltage effect.
Preferably, described HF voltage is the voltage more than or equal to 2KHz, and described low-frequency voltage is the voltage less than 2KHz.
Preferably, described polymer dispersed liquid crystal layer a plurality of liquid crystal particles of comprising polymer network and being arranged in described polymer network.
Preferably, described liquid crystal particle is the nematic liquid crystal particle.
Preferably, when described polymer dispersed liquid crystal layer was applied high voltage, the equivalent refractive index of described liquid crystal particle equated with the equivalent refractive index of described polymer network; When described polymer dispersed liquid crystal layer was applied low-voltage, the equivalent refractive index of described liquid crystal particle and the equivalent refractive index of described polymer network were unequal.
Preferably, when described polymer dispersed liquid crystal layer was applied high voltage, described display control panel was not for changing the pellucidity of incident ray travel path; When described polymer dispersed liquid crystal layer was applied low-voltage, described display control panel was for can produce the GTG pellucidity of scattering process to incident ray.
Preferably, described high voltage is the voltage more than or equal to 10V, and described low-voltage is more than or equal to zero volt and less than the voltage of 10V.
Preferably, described electrode layer comprises a plurality of patterned electrode zones.
Preferably, described electrode layer is whole electrode layer.
Preferably, be provided with reflecting polarized wafer between described display control panel and described display panels.
Preferably, described reflecting polarized wafer is the wire grating polaroid.
Preferably, described display control panel is active drive-type display control panel.
Preferably, described display control panel is passive drive formula display control panel.
Preferably, described display panels is included as described display panels first driving circuit that drives signal is provided; Described display control panel is included as described display control panel second driving circuit that drives signal is provided.
Preferably, described liquid crystal indicator also comprises processor; Described processor is controlled the synchronous demonstration that described first driving circuit and described second driving circuit are realized described display panels and display control panel.
Preferably, described liquid crystal indicator also comprises touch panel.
Preferably, described touch panel is that box is embedded in type projected capacitive touch panel.
A kind of control method of liquid crystal indicator is used above-mentioned liquid crystal indicator, when described liquid crystal layer is smectic phase dual-frequency liquid crystal layer, comprising:
The driving signal is provided for described display panels, described display panels is normally shown;
Apply low-frequency voltage signal for described smectic phase dual-frequency liquid crystal layer, make described display control panel be pellucidity;
Apply high-frequency voltage signal for described smectic phase dual-frequency liquid crystal layer, make described display control panel be the GTG pellucidity.
Preferably, described smectic phase dual-frequency liquid crystal layer does not have scattering process to the light of incident under the low-frequency voltage effect; Described smectic phase dual-frequency liquid crystal layer has scattering process to the light of incident under the HF voltage effect.
Preferably, described HF voltage is the voltage more than or equal to 2KHz, and described low-frequency voltage is the voltage less than 2KHz.
A kind of control method of liquid crystal indicator is used above-mentioned liquid crystal indicator, when described liquid crystal layer is polymer dispersed liquid crystal layer, comprising:
The driving signal is provided for described display panels, described display panels is normally shown;
Described polymer dispersed liquid crystal layer applies high voltage signal, makes described display control panel be pellucidity;
Described polymer dispersed liquid crystal layer applies low voltage signal, makes described display control panel be the GTG pellucidity.
Preferably, when described polymer dispersed liquid crystal layer was applied high voltage, the equivalent refractive index of described liquid crystal particle equated with the equivalent refractive index of described polymer network; When described polymer dispersed liquid crystal layer was applied low-voltage, the equivalent refractive index of described liquid crystal particle and the equivalent refractive index of described polymer network were unequal.
Preferably, described high voltage is the voltage more than or equal to 10V, and described low-voltage is more than or equal to zero volt and less than the voltage of 10V.
By such scheme as can be known, the liquid crystal indicator that the application provides comprises display control panel, and described display control panel comprises first substrate and second substrate that is oppositely arranged, be arranged at the liquid crystal layer between described first substrate and second substrate, be arranged at described first substrate and second substrate respectively towards the electrode layer of described liquid crystal layer one side, wherein, described liquid crystal layer is smectic phase dual-frequency liquid crystal layer or polymer dispersed liquid crystal layer.And by the liquid crystal layer in the display control panel, can realize the switching of displaying articles picture in display panels picture and the display case, the interior displaying articles picture of described display panels picture and display case is shown simultaneously, thereby improve the interaction display effect of article in described liquid crystal indicator and the display case.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of liquid crystal indicator provided by the present invention;
Fig. 2 is the structural representation of display panels among Fig. 1;
Fig. 3 is the structural representation of display control panel among Fig. 1;
Fig. 4 and Fig. 5 are the liquid crystal layer view of a kind of display control panel provided by the present invention under different frequency voltage;
Fig. 6 is the liquid crystal layer view of another kind of display control panel provided by the present invention under different amplitude voltages with Fig. 7;
Fig. 8 is a kind of display control panel electrode layer structure synoptic diagram provided by the present invention;
Fig. 9 is the synoptic diagram of reflecting polarized wafer between a kind of display control panel provided by the present invention and display panels.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
The embodiment of the present application discloses a kind of liquid crystal indicator, and as shown in Figure 1, this liquid crystal indicator comprises: display panels 1 and display control panel 2.Present embodiment and following only to be applied to display case 3 with liquid crystal indicator be example describes.
Wherein, described display panels 1 is transparent display panel, as shown in Figure 2, comprising:
The thin-film transistor array base-plate 11 that is oppositely arranged and color membrane substrates 12, and be arranged on demonstration liquid crystal layer 13 between described thin-film transistor array base-plate 11 and the color membrane substrates 12.
Wherein, the thickness of the color filter film in the described color membrane substrates 12 shows that than general the color filter film of usefulness is thinner, so that described display panels 1 can have the picture that transparency ground shows described display panels 1 back more.Preferably, described thin-film transistor array base-plate 11 can also arrange polaroid away from a side that shows liquid crystal layer 12 and color membrane substrates 12 away from a side that shows liquid crystal layer 12, and preferably adopt the higher polaroid of transmitance, to improve the transmitance of described display panels 1, namely improve the transparent display effect of described display panels 1.Metal wire (as sweep trace and data line) in the described thin-film transistor array base-plate 11 is narrower, makes the aperture opening ratio of described display panels 1 higher, and then further improves the transmitance of described display panels 1.
As shown in Figure 3, described display control panel 2 comprises:
Be arranged at the liquid crystal layer 23 between described first substrate 21 and second substrate 22;
Be arranged at described first substrate 21 and second substrate 22 respectively towards the electrode layer 24 of described liquid crystal layer one side, described electrode layer 24 is transparent electrode layer, is preferably indium tin oxide electrode layer or indium zinc oxide electrode layer.
Wherein, described liquid crystal layer 23 is smectic phase dual-frequency liquid crystal layer or polymer dispersed liquid crystal layer, and namely the liquid crystal in the described liquid crystal layer 23 is smectic phase dual-frequency liquid crystal or Polymer Dispersed Liquid Crystal.
With reference to figure 1, general, described display case 3 is a cavity body structure, and a backlight 31 can also be set in the described display case, when display control panel 2 is clear state, the light of interior other article 4 reflections (or sending) of the light that described backlight 31 sends and display case is transmission display control panel 2 and display panels 1 successively, present at described display panels 1, thereby can outside described display case 3, see the picture rich in detail of institute's displaying articles in the described display case 3.
By such scheme as can be known, the liquid crystal indicator that the application provides comprises display control panel, and described display control panel comprises first substrate and second substrate that is oppositely arranged, be arranged at the liquid crystal layer between described first substrate and second substrate, be arranged at described first substrate and second substrate respectively towards the electrode layer of described liquid crystal layer one side, wherein, described liquid crystal layer is smectic phase dual-frequency liquid crystal layer or polymer dispersed liquid crystal layer.And by the liquid crystal layer molecules align in the control display control panel, can realize the switching of displaying articles picture in display panels picture and the display case, the interior displaying articles picture of described display panels picture and display case is shown simultaneously, realize the interaction of institute's displaying articles in described display panels and the described display case.And, described liquid crystal indicator can utilize the external environment condition light source, especially establishes in display case in the arbitrary source, and for example backlight 31, just do not need additionally to arrange separately backlight, thereby can improve the transparency of described liquid crystal indicator and reduce power consumption.
Another embodiment of the application discloses a kind of concrete liquid crystal indicator, liquid crystal layer in the display control panel of described liquid crystal indicator is smectic phase dual-frequency liquid crystal layer, be that the interior liquid crystal of described liquid crystal layer is the smectic phase dual-frequency liquid crystal, preferably, the liquid crystal smectic phase A type dual-frequency liquid crystal in the described liquid crystal layer.
Wherein, described smectic phase dual-frequency liquid crystal is the positivity liquid crystal characteristic under the low-frequency voltage effect, under the HF voltage effect, is the negative liquid crystal characteristic, and preferred, described low-frequency voltage is the voltage less than 2KHz, and described HF voltage is the voltage more than or equal to 2KHz.
Then in the disclosed display control panel of present embodiment, when the low-frequency voltage that described display control panel applied less than 2KHz, as shown in Figure 4, described smectic phase dual-frequency liquid crystal is the positivity liquid crystal characteristic, the major axis of liquid crystal molecule is parallel to electric field under the effect of voltage, the arrangement unanimity of each layer liquid crystal molecule, and it is structurally ordered, for the almost not influence of the direction of propagation of the light of injecting liquid crystal layer 23, namely described display control panel is clear state.At this moment, described display panels picture can show the article of showing in the display case 3.
When the HF voltage that described display control panel applied more than or equal to 2KHz, as shown in Figure 5, described smectic phase dual-frequency liquid crystal is the negative liquid crystal characteristic, liquid crystal molecule can be to rotating perpendicular to the electric field line direction under the effect of voltage, the ordered structure of its stratiform will be damaged and form numerous territories not of uniform size (Domain), because the overall oriented of liquid crystal molecule in each territory is inequality, therefore have the difference on the refractive index between territory and the territory, this difference can produce scattering effect after will causing incident ray to experience repeatedly the interface between the territory.And, frequency by the regulation and control HF voltage, can control the fall into disarray degree of described smectic phase dual-frequency liquid crystal molecule, namely change the number and size in territory, and then control the scattering degree of 23 pairs of light of described liquid crystal layer, correspondingly control the transmitance of described display control panel, make it can realize the control of GTG clear state, namely when described HF voltage frequency during near 2KHz, described display control panel is less to the scattering process of light, and when described HF voltage frequency acquires a certain degree (for example 50KHz), described display control panel is to the very strong scattering process that has of light, at this moment, the picture of article then can be subjected to very big influence in the described display case, after light passes through described display control panel, reason owing to the strong scattering of light quilt, the picture signal of itself carrying will be lost, namely can't show any image, the light that sends in the display case this moment can be utilized backlight as described display panels in a way, and described display panels picture displayed also can become the unique picture displayed of described liquid crystal indicator.
Need to prove, when electric voltage frequency one timing that is applied on the described display control panel, can also be applied to voltage magnitude on the described display control panel by regulation and control, control in the described smectic phase dual-frequency liquid crystal layer liquid crystal molecule to the dispersion effect of incident ray, thereby control the GTG pellucidity of described display control panel.
As seen, present embodiment is by the liquid crystal layer 23 in the control display control panel, can realize the switching of displaying articles picture in display panels picture and the display case, realize the interaction of article picture in described display panels and the display case, thereby improve the bandwagon effect of article in the display case.
In addition, in the light that backlight in the described display case sends and the display case light of other article reflections (or sending) can be simultaneously as the backlight of described liquid crystal indicator, then described liquid crystal indicator does not need additionally to arrange separately backlight, so the power consumption of described liquid crystal indicator is lower.And, because described smectic has memory effect to dual-frequency liquid crystal, then described display control panel is after receiving a voltage pulse signal, described smectic can keep 1 year even the longer time to the state of dual-frequency liquid crystal, till needs change its Liquid Crystal Molecules Alignment state, thereby can further reduce the power consumption of described liquid crystal indicator.So the power consumption of described display panels is less, in the epoch for current energy scarcity, be significant.
The another embodiment of the application discloses another kind of concrete liquid crystal indicator, and the liquid crystal layer in the display control panel of described liquid crystal indicator is polymer dispersed liquid crystal layer, and namely the liquid crystal in the described liquid crystal layer is Polymer Dispersed Liquid Crystal.
A plurality of liquid crystal particles that described polymer dispersed liquid crystal layer comprises polymer network and is arranged in described polymer network.Wherein, described polymer network is that polymerization under the irradiation of ultraviolet light forms by polymer monomer and light trigger, is divided into a plurality of area of space, and the liquid crystal molecule that will be positioned at the different spaces zone is divided into a plurality of different farmlands, becomes liquid crystal particle.Need to prove that described polymer monomer refers to can polymerization reaction take place and generate the compound of relative high relative molecular.
In the present embodiment, the liquid crystal particle in the described Polymer Dispersed Liquid Crystal is preferably the nematic liquid crystal particle.
As shown in Figure 6, described polymer dispersed liquid crystal layer is being applied a high voltage, be preferably more than or when equaling the high voltage of 10V, the major axis of the liquid crystal molecule in the described liquid crystal particle is all arranged along direction of an electric field, it has unified liquid crystal molecule attitude.When incident ray is injected described polymer dispersed liquid crystal layer, described liquid crystal particle equates with the equivalent refractive index of described polymer network to described incident ray the equivalent refractive index of incident ray, by the almost not influence of the light direction of propagation of described liquid crystal layer 23, scattering can not take place in the light that namely sees through described display control panel.Described display panels can show the article of showing in the display case, makes between the picture of displaying articles in described display panels picture and the display case and realizes interaction.
As shown in Figure 7, when not having electric field or electric field intensity low, the residing state difference of different liquid crystal particles.Then described polymer dispersed liquid crystal layer is being applied a low-voltage, the volt and during less than the low pressure of 10V of being preferably more than or equalling zero since do not apply electric field or apply electric field less, the residing state difference of different liquid crystal particles.Therefore the axial angle of the incident direction of incident ray and each liquid crystal particle is inequality, thereby makes described liquid crystal particle unequal to the equivalent refractive index of same incident ray to equivalent refractive index and the described polymer network of incident ray.Then scattering can take place after experiencing a plurality of liquid crystal particles in the light by described liquid crystal layer 23.And, magnitude of voltage by regulation and control low pressure, can control the scattering degree of 23 pairs of light of described liquid crystal layer, correspondingly control the transmitance of described display control panel, make it can realize the control of GTG clear state, namely when the magnitude of voltage of described low pressure during near 10V, described display control panel is less to the scattering process of light, the picture of article can be presented on the described display panels more clearly in the display case, and when described low voltage voltage value be 0 or close to 0 the time, described display control panel is to the very strong scattering process that has of light, at this moment, after light passes through described display control panel, the picture of article can't be shown in the display case, and then the light that sends in the display case has been owing to lost picture signal, can be utilized backlight as described display panels in a way, at this moment, described display panels picture displayed can become the unique picture displayed of described liquid crystal indicator.
As seen, present embodiment is by the liquid crystal layer 23 in the control display control panel, can realize the switching of displaying articles picture in display panels picture and the display case, realize the interaction of article picture in described display panels picture and the described display case, thereby improve described liquid crystal indicator to the bandwagon effect of article in the display case.
In addition, the light of other article reflections (or sending) can be used as the backlight of described liquid crystal indicator in the light that backlight in the described display case sends and the display case, then described liquid crystal indicator does not need additionally to arrange separately backlight, so the power consumption of described liquid crystal indicator is lower.
The another embodiment of the application discloses another kind of liquid crystal indicator, is with above-described embodiment difference:
As shown in Figure 8, the electrode layer of described display control panel comprises a plurality of patterned electrode zones 241,242 ... then described a plurality of patterned electrode zone can be controlled separately, then described display control panel can realize that a part is to not influence of transmitted light, for example 241 is clear state, make the picture in the display case be able to impregnable demonstration, other parts of described display control panel then can make transmitted light generation scattering, for example 242 is the GTG clear state, picture can not show in the display case of this partial occlusion, and the light that penetrates in the described display case in this part just as the ejaculation backlight of display panels.
As shown in Figure 9,1 of described display control panel 2 and described display panels are provided with reflecting polarized wafer, preferably, in conjunction with Fig. 2, the polaroid 110 that is provided with between the thin-film transistor array base-plate 11 of described display panels 1 and the display control panel 2, and polaroid 110 is preferably reflecting polarized wafer.For general polaroid, it can absorb the light about 50%, and described reflecting polarized wafer then can reflect back unwanted light, thus recycling, and then the brightness that increases described liquid crystal indicator.Further, the described reflecting polarized wafer of present embodiment is preferably the wire grating polaroid.
Described display control panel can be active drive-type display control panel, i.e. the demonstration that drives by thin film transistor (TFT) array is with switch or the switch partly of controlling described display control panel integral body.Certainly, described display control panel can also be passive drive formula display control panel.And the electrode layer of described display control panel can also be whole electrode layer, to reduce the use of thin film transistor (TFT).
In addition, described display panels also is included as described display panels first driving circuit that drives signal is provided; Described display control panel also is included as described display control panel second driving circuit that drives signal is provided.Wherein, described first driving circuit can be separately positioned on different PCB(Printed Circuit Board with second driving circuit, printed circuit board) on, more preferably, described first driving circuit and second driving circuit also can together be arranged on the same PCB.
Further, described liquid crystal indicator also comprises processor.Described processor is controlled described first driving circuit and described second driving circuit, to realize the synchronous demonstration of described display panels and display control panel.
In addition, described liquid crystal indicator also comprises touch panel, to make things convenient for man-machine interaction.Wherein, described touch panel can be the projected capacitive touch panel, preferably, described touch panel is (In-Cell) embedded type projected capacitive touch panel in the box, in addition, described touch panel can also be the external hanging type touch panel, namely by the mode that chemistry is fitted or physics is fitted, described touch panel is fixed on described display panels oriented manipulation person's a side.Concrete structure and setting based on touch panel are known to those skilled in the art, just repeat no more at this.
The liquid crystal indicator that present embodiment provides, improve described liquid crystal indicator to display case on the basis of bandwagon effect of article, can also realize the part demonstration of picture in the display case, and further improve its display brightness, to make things convenient for man-machine interaction.
The another embodiment of the application discloses a kind of control method of liquid crystal indicator, and described control method can be applied to the liquid crystal indicator that above-mentioned liquid crystal layer is smectic phase dual-frequency liquid crystal layer.
This control method comprises:
The driving signal is provided for described display panels, described display panels is normally shown.
Apply low-frequency voltage signal for described smectic phase dual-frequency liquid crystal layer, make described display control panel be pellucidity.Preferably, apply a low-frequency voltage signal less than 2KHz for the electrode layer of described display control panel, between first substrate and second substrate, can produce a low-frequency current field, described low-frequency voltage signal is applied on the described smectic phase dual-frequency liquid crystal layer.At this moment, described smectic phase dual-frequency liquid crystal layer shows as the positivity liquid crystal characteristic under the low-frequency voltage effect, light to incident does not have scattering process, the state of each layer liquid crystal molecule is similar, and it is structurally ordered, to the almost not influence of the light direction of propagation of transmission display control panel.Then described display control panel is pellucidity, make described display panels picture can and display case in realize between the picture of displaying articles interactive.
Perhaps, apply high-frequency voltage signal for described smectic phase dual-frequency liquid crystal layer, make described display control panel be the GTG pellucidity.Apply high-frequency voltage signal more than or equal to 2KHz namely preferably for the electrode layer of described display control panel, between first substrate and second substrate, can produce a high-frequency electric field, described high-frequency voltage signal is applied on the described smectic phase dual-frequency liquid crystal layer.Then described smectic phase dual-frequency liquid crystal layer is under the HF voltage effect, show as the negative liquid crystal characteristic, described display control panel is the GTG pellucidity, the ordered lamellar structure of smectic phase dual-frequency liquid crystal layer is upset, the different territory of a plurality of liquid crystal molecular orientations occurs, the refractive index difference between the territory will make that incident ray is subjected to scattering process.
And, when described HF voltage frequency during near 2KHz, described display control panel is less to the scattering process of light, the picture of article can be presented on the described display panels more clearly in the display case, and when described HF voltage frequency acquires a certain degree (for example 50KHz), described display control panel is to the very strong scattering process that has of light, at this moment, after light is injected described display control panel, the picture of article can't be shown in the display case, the light that sends in the display case backlight as described display panels fully then, at this moment, described display panels picture displayed can become the unique picture displayed of described liquid crystal indicator.
In addition, the driving signal of described display panels and the driving signal demand of described display control panel provide by certain sequential, namely the driving signal is provided for described display panels, make when described display panels is normal to be shown, needs according to the background transparent degree, corresponding driving signal is provided for described display control panel, make described display panels and described display control panel show synchronously, realize the interaction of displaying articles picture in described display panels picture and the described display case.
As seen, present embodiment is by the liquid crystal layer in the control display control panel, can realize the switching of displaying articles picture in display panels picture and the display case, the interior displaying articles picture of described display panels picture and display case is shown simultaneously, thereby improve described liquid crystal indicator to the bandwagon effect of article in the display case.
The another embodiment of the application discloses the control method of another kind of liquid crystal indicator, the liquid crystal indicator when this control method is applied to above-mentioned liquid crystal layer and is polymer dispersed liquid crystal layer.
This control method comprises:
The driving signal is provided for described display panels, described display panels is normally shown.
Apply high voltage signal for described polymer dispersed liquid crystal layer, make described display control panel be pellucidity.Apply a high voltage signal more than or equal to 10V namely preferably for the electrode layer of described display control panel, between first substrate and second substrate, can produce a high-voltage electric field, described high voltage signal is applied on the described polymer dispersed liquid crystal layer.Then when described polymer dispersed liquid crystal layer is applied high voltage, the major axis of liquid crystal molecule that is positioned at the liquid crystal particle of described Polymer Dispersed Liquid Crystal is all arranged along direction of an electric field, and it has unified liquid crystal molecule attitude.When the incident direction of incident ray is parallel to direction of an electric field incident, when described incident ray is injected described polymer dispersed liquid crystal layer, described liquid crystal particle equates with the equivalent refractive index of described polymer network to described incident ray the equivalent refractive index of incident ray, described display control panel is pellucidity, for the almost not influence of the direction of propagation of the light of injecting described display control panel.Thereby realize interaction between the picture of displaying articles in described display panels picture and the display case.
Perhaps, apply low voltage signal for described polymer dispersed liquid crystal layer, make described display control panel be the GTG pellucidity.Apply one more than or equal to zero volt and less than the low voltage signal of 10V namely preferably for the electrode layer of described display control panel, between first substrate and second substrate, can produce a low voltage electric field (or not having electric field), described low voltage signal is applied on the described polymer dispersed liquid crystal layer.Then described polymer dispersed liquid crystal layer is being applied low-voltage when (comprising zero volt voltage), the residing state difference of different liquid crystal particles.Therefore the axial angle of the incident direction of incident ray and each liquid crystal particle is inequality, thereby makes described liquid crystal particle unequal to the equivalent refractive index of same incident ray to equivalent refractive index and the described polymer network of incident ray.Then scattering can take place after experiencing a plurality of liquid crystal particles in the light by described liquid crystal layer.At this moment, described display control panel is the GTG pellucidity.When the magnitude of voltage of described low voltage signal during near 10V, described display control panel is less to the scattering process of light, the picture of article can be presented on the described display panels more clearly in the display case, and when the magnitude of voltage of described low voltage signal be 0V or during close to 0V, described display control panel is to the very strong scattering process that has of light, at this moment, after light passes through described display control panel, the picture of article can't be shown in the display case, then the light that sends in the display case is fully as the backlight of described display panels, and described display panels picture displayed also can become the unique picture displayed of described transparent liquid crystal display device.
In addition, preferably, the driving signal of described display panels and the driving signal demand of described display control panel provide by certain sequential, namely the driving signal is provided for described display panels, make when described display panels is normal to be shown, according to the needs of background transparent degree, corresponding driving signal is provided for described display control panel, to realize the synchronous demonstration of described display panels and described display control panel.
As seen, present embodiment is by the liquid crystal layer in the control display control panel, can realize the switching of displaying articles picture in display panels picture and the display case, the interior displaying articles picture of described display panels picture and display case is shown simultaneously, thereby improve described liquid crystal indicator to the bandwagon effect of article in the display case.
Various piece adopts the mode of going forward one by one to describe in this instructions, and what each part stressed is and the difference of other parts that same or similar part is mutually referring to getting final product between the various piece.
Need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.Do not having under the situation of more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and defined General Principle can realize under the situation that does not break away from the spirit or scope of the present invention in other embodiments herein.Therefore, the present invention will can not be restricted to embodiment illustrated herein, but will meet the wideest scope consistent with principle disclosed herein and features of novelty.
Claims (25)
1. a liquid crystal indicator is characterized in that, comprising: display panels, display control panel; Described display control panel comprises:
First substrate that is oppositely arranged and second substrate;
Be arranged at the liquid crystal layer between described first substrate and second substrate;
Be arranged at described first substrate and second substrate respectively towards the electrode layer of described liquid crystal layer one side;
Wherein, described liquid crystal layer is smectic phase dual-frequency liquid crystal layer or polymer dispersed liquid crystal layer.
2. liquid crystal indicator according to claim 1 is characterized in that, described smectic phase dual-frequency liquid crystal is the positivity liquid crystal characteristic under the low-frequency voltage effect; Described smectic phase dual-frequency liquid crystal is the negative liquid crystal characteristic under the HF voltage effect.
3. liquid crystal indicator according to claim 1 is characterized in that, described smectic phase dual-frequency liquid crystal layer does not have scattering process to the light of incident under the low-frequency voltage effect; Described smectic phase dual-frequency liquid crystal layer has scattering process to the light of incident under the HF voltage effect.
4. according to claim 2 or 3 described liquid crystal indicators, it is characterized in that described HF voltage is the voltage more than or equal to 2KHz, described low-frequency voltage is the voltage less than 2KHz.
5. liquid crystal indicator according to claim 1 is characterized in that, a plurality of liquid crystal particles that described polymer dispersed liquid crystal layer comprises polymer network and is arranged in described polymer network.
6. liquid crystal indicator according to claim 5 is characterized in that, described liquid crystal particle is the nematic liquid crystal particle.
7. liquid crystal indicator according to claim 6 is characterized in that, when described polymer dispersed liquid crystal layer was applied high voltage, the equivalent refractive index of described liquid crystal particle equated with the equivalent refractive index of described polymer network; When described polymer dispersed liquid crystal layer was applied low-voltage, the equivalent refractive index of described liquid crystal particle and the equivalent refractive index of described polymer network were unequal.
8. liquid crystal indicator according to claim 6 is characterized in that, when described polymer dispersed liquid crystal layer was applied high voltage, described display control panel was not for changing the pellucidity of incident ray travel path; When described polymer dispersed liquid crystal layer was applied low-voltage, described display control panel was for can produce the GTG pellucidity of scattering process to incident ray.
9. according to claim 7 or 8 described liquid crystal indicators, it is characterized in that described high voltage is the voltage more than or equal to 10V, described low-voltage is more than or equal to zero volt and less than the voltage of 10V.
10. liquid crystal indicator according to claim 1 is characterized in that, described electrode layer comprises a plurality of patterned electrode zones.
11. liquid crystal indicator according to claim 1 is characterized in that, described electrode layer is whole electrode layer.
12. liquid crystal indicator according to claim 1 is characterized in that, is provided with reflecting polarized wafer between described display control panel and described display panels.
13. liquid crystal indicator according to claim 12, described reflecting polarized wafer are the wire grating polaroid.
14. liquid crystal indicator according to claim 1 is characterized in that, described display control panel is active drive-type display control panel.
15. liquid crystal indicator according to claim 1 is characterized in that, described display control panel is passive drive formula display control panel.
16. liquid crystal indicator according to claim 1 is characterized in that, described display panels is included as described display panels first driving circuit that drives signal is provided; Described display control panel is included as described display control panel second driving circuit that drives signal is provided.
17. liquid crystal indicator according to claim 16 is characterized in that, described liquid crystal indicator also comprises processor; Described processor is controlled the synchronous demonstration that described first driving circuit and described second driving circuit are realized described display panels and display control panel.
18. liquid crystal indicator according to claim 1 is characterized in that, also comprises touch panel.
19. liquid crystal indicator according to claim 18 is characterized in that, described touch panel is that box is embedded in type projected capacitive touch panel.
20. the control method of a liquid crystal indicator is applied to weigh each described liquid crystal indicator of 1-3,5-8 or 10-19, it is characterized in that, when described liquid crystal layer is smectic phase dual-frequency liquid crystal layer, comprising:
The driving signal is provided for described display panels, described display panels is normally shown;
Apply low-frequency voltage signal for described smectic phase dual-frequency liquid crystal layer, make described display control panel be pellucidity;
Apply high-frequency voltage signal for described smectic phase dual-frequency liquid crystal layer, make described display control panel be the GTG pellucidity.
21. control method according to claim 20 is characterized in that, described smectic phase dual-frequency liquid crystal layer does not have scattering process to the light of incident under the low-frequency voltage effect; Described smectic phase dual-frequency liquid crystal layer has scattering process to the light of incident under the HF voltage effect.
22. control method according to claim 21 is characterized in that, described HF voltage is the voltage more than or equal to 2KHz, and described low-frequency voltage is the voltage less than 2KHz.
23. the control method of a liquid crystal indicator is applied to weigh each described liquid crystal indicator of 1-3,5-8 or 10-19, it is characterized in that, when described liquid crystal layer is polymer dispersed liquid crystal layer, comprising:
The driving signal is provided for described display panels, described display panels is normally shown;
Described polymer dispersed liquid crystal layer applies high voltage signal, makes described display control panel be pellucidity;
Described polymer dispersed liquid crystal layer applies low voltage signal, makes described display control panel be the GTG pellucidity.
24. control method according to claim 23 is characterized in that, when described polymer dispersed liquid crystal layer was applied high voltage, the equivalent refractive index of described liquid crystal particle equated with the equivalent refractive index of described polymer network; When described polymer dispersed liquid crystal layer was applied low-voltage, the equivalent refractive index of described liquid crystal particle and the equivalent refractive index of described polymer network were unequal.
25. control method according to claim 24 is characterized in that, described high voltage is the voltage more than or equal to 10V, and described low-voltage is more than or equal to zero volt and less than the voltage of 10V.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| CN2012104032820A CN103293738A (en) | 2012-10-19 | 2012-10-19 | Liquid crystal display device and control method thereof |
| PCT/CN2013/080170 WO2014059809A1 (en) | 2012-10-19 | 2013-07-26 | Liquid crystal display device and control method for same |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012104032820A CN103293738A (en) | 2012-10-19 | 2012-10-19 | Liquid crystal display device and control method thereof |
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| CN103293738A true CN103293738A (en) | 2013-09-11 |
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| CN2012104032820A Pending CN103293738A (en) | 2012-10-19 | 2012-10-19 | Liquid crystal display device and control method thereof |
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| WO (1) | WO2014059809A1 (en) |
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Application publication date: 20130911 |