CN101556390A - Switch panel and liquid crystal display system for three-dimensional display device - Google Patents
Switch panel and liquid crystal display system for three-dimensional display device Download PDFInfo
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Abstract
The invention relates to a switch panel and a liquid crystal display system for a three-dimensional display device. The switch panel and a light emergent side of a polaroid portrait of the liquid crystal device are arranged in an attaching way; the switch panel comprises two transparent substrates; transparent conductive films are respectively coated on two opposite surfaces of the two transparent substrates; a liquid crystal layer is filled between the two transparent substrates; and oriented films mutually vertical to oriented grooves are respectively arranged on two sides of the two transparent substrate. The other switch panel and the light emergent side of a polaroid portrait of the liquid crystal device are arranged in an attaching way; the switch panel comprises at least one transparent substrate, liquid crystal layers filled between the transparent substrate and the liquid crystal display device, and two transparent electrodes on which driving signals are applied; the oriented films are arrayed along a first mode; and the liquid crystal layers are arrayed along a second mode. The liquid crystal display system comprises the switch panel and polarization analyzing glass which corresponds to the switch panel. The invention adopts a liquid crystal secondary optical rotation technology to achieve three-dimensional image and has simple structure, low cost and favorable imaging effect.
Description
Technical field
The present invention relates to be used for the switch panel and the liquid crystal display systems of three-dimensional display apparatus, relate in particular to and can make display device possess the switch panel of 3-D view Presentation Function, and the liquid crystal display systems that comprises this switch panel.
Background technology
LCD is the main product in the current panel display apparatus, LCD, Thin Film Transistor-LCD (Thin Film Transistor-Liquid Crystal Display particularly, hereinafter to be referred as TFT-LCD) general structure as shown in Figure 1, by module 100 backlight, liquid crystal panel, outside framework 300 and four most of compositions of picture signal drive unit (not shown).Because existing liquid crystal panel mainly plays the effect of demonstration, so also can be called display panels, i.e. the liquid crystal indicator 200 of outgoing polarizability portrait.Wherein, module 100 backlight mainly comprises parts such as backlight, backlight reflecting plate and optical film, is used to LCD that uniform area light source is provided.Liquid crystal indicator 200 plays the light of modulation backlight ejaculation to form the effect of image, as shown in Figure 2, mainly comprise array base palte 240 and color membrane substrates 220 that box is provided with, array base palte 240 and color membrane substrates 220 both sides be respectively arranged with the polarization direction perpendicular on polaroid 210 and following polaroid 250, between array base palte 240 and color membrane substrates 220, be filled with liquid crystal layer 230.As required resolution is formed with the pixel cell that matrix form is arranged on array base palte 240, each pixel cell correspondence is provided with pixel electrode 241 and TFT on-off element 244, as shown in Figure 3, pixel electrode 241 is connected on data line 242 and the gate electrode sweep trace 243 by TFT on-off element 244.Corresponding each pixel cell is provided with color film of all kinds on color membrane substrates, with the colorize of realizing that image shows, color intermembranously also be formed with black matrix what matrix form was arranged, hide TFT on-off element on the array base palte etc. with correspondence, also be provided with common electrode layer on the color membrane substrates, be used for matching, form the electric field that changes betwixt and drive liquid crystal layer and twist according to direction of an electric field with the pixel electrode of each pixel cell on the array base palte.In array base palte and the color membrane substrates alignment films that on the surface of liquid crystal layer, has been sticked respectively, alignment films is provided with many parallel orientation slots towards the surface of liquid crystal layer, and the orientation slots on two alignment films is vertical mutually, because the stickability of liquid crystal material, so closing on the liquid crystal molecule of alignment films can arrange according to the direction of orientation slots, because the orientation slots of two alignment films is vertical, reverse so 90 degree take place between two alignment films liquid crystal molecule, can be referring to liquid crystal layer state shown in Figure 2, the liquid crystal layer plan structure synoptic diagram under this state is as shown in Figure 4.Pixel electrode on picture signal drive unit and the array base palte links to each other respectively with the public electrode on the color membrane substrates, be used for synchronizing signal difference outputting common voltage, data drive signal and scanning drive signal according to time clock, between color membrane substrates and array base palte, to form the electric field that changes, realize the demonstration of image.
The principle of work of said structure LCD is: provide light to inject display panels by backlight, when not feeding picture signal, the liquid crystal layer both sides do not form electric field, the torsional direction of liquid crystal molecule is constant, and light is after following polaroid incident, and following polaroid plays the polarisation effect, its transmitted light is that folk prescription is to linearly polarized photon, this light is injected liquid crystal layer, because the optically-active effect of liquid crystal, the polarization direction of this polarized light can change with the change of oval liquid crystal molecule direction; When feeding picture signal, the picture signal drive unit is on the one hand to public electrode output constant voltage, on the other hand according to synchronizing signal, it can be time clock, picture signal is converted to data drive signal and scanning drive signal outputs on the array base palte, then each pixel cell is transfused to data drive signal, i.e. voltage of Bian Huaing, form electric field between this voltage and the common electric voltage, make the liquid crystal molecule in this liquid crystal pixel cells corresponding region twist according to this electric field, thereby change the direction of light, when direction of polarized light is consistent with last polaroid polarization direction, light promptly penetrates from last polaroid and presents to the beholder, and when direction of polarized light was vertical with last polaroid polarization direction, then light can't see through.The power of transmitted light is then controlled by the voltage between substrate.According in the principle of work of above-mentioned liquid crystal indicator as can be seen, though that image can present color is abundant, bright dark staggered characteristics, its light all is made up of linearly polarized photon, the polarization direction is consistent with last polaroid direction.
At present, the realization of three-dimensional imaging is the technical goal of constantly pursuing in the image demonstration field.So-called three-dimensional imaging, it is a kind of technology to beholder's stimulated three-dimensional image, when spectators' left eye and right eye received the different but corresponding fluoroscopy images of same object or scenery respectively, spectators' brain can be handled this two images simultaneously, thereby produces three-dimensional sensation.The three-dimensional imaging technology mainly depends on one or more specific technology and comes separate picture, with left eye and the right eye that offers spectators respectively.
The technology of more existing realization three-dimensional imagings in the prior art, for example: in application number is 00210765.1 Chinese patent, disclose a kind of method of utilizing compound LCD panel to realize three-dimensional imaging, adopt folded a plurality of liquid crystal layers of establishing, and drive respectively to form the method for a plurality of images simultaneously, on the depth direction, form 3-D view, the shortcoming of this method is to need to handle the different images that multilayer liquid crystal shows, cause complex structure, the driver circuit design is complicated, and folded establish the multilayer liquid crystal layer and the big defective of product size can occur, in addition, this method can not realize the strict image of distinguishing the binocular that presents to audience.A kind of method of utilizing compound LCD panel to show three-dimensional imaging in being 200580039824.9 Chinese patent application, application number is disclosed, this method adopts two-layer at least stacked liquid crystal cells, in display panels, show, present the computed image that superposes each other on the different distance with respect to spectators, can in one or more zones, produce the continuous three-dimensional image in conjunction with suitable 3-D view drive system.But this method is the technology of computed image because employing spatially superposes each other, thus can not produce the binocular image of notable difference, and the 3-D view Driving Scheme is very complicated.Application number is that 97108881.0 Chinese patent application discloses a kind of driving method that utilizes the time-devision system liquid crystal glasses, this method is distinguished the different images signal by the liquid crystal glasses that makes viewers wear and display system signals synchronous modulation, thereby reaches the effect of three-dimensional imaging.The defective that this method exists is that liquid crystal glasses complex structure cost height, the weight of time-division control is worn inconvenience greatly.Disclose a kind of method of utilizing voltage controlled Polarizer control display image polarization direction in number of documents is the korean patent application of KR1020050086001 and KR1020050065125 respectively, this method can be used for producing 3-D view in conjunction with making of analyzing glasses.But this method also exists certain defective, and the Polarizer that needs to adopt modulation is as switch panel, thus the manufacturing of this Polarizer difficulty cost height, and the control technology complexity, be difficult to realize.
By to the analysis of prior art as can be known, existing possess in the display device of three-dimensional imaging function, has technical sophistication, cost height, production and awkward problem more, and also existing can not the strict problem of distinguishing the binocular image, causes the three-dimensional imaging poor effect.
Summary of the invention
The purpose of this invention is to provide the switch panel and the liquid crystal display systems that are used for three-dimensional display apparatus, have the three-dimensional imaging function with the realization display device, and three-dimensional imaging is effective, simple in structure, cost is low, popularization easy to produce and use.
For achieving the above object, the invention provides a kind of switch panel that is used for three-dimensional display apparatus, this three-dimensional display apparatus comprises the liquid crystal indicator and the switch panel of outgoing polarizability portrait, and wherein, a side of the portrait of switch panel and liquid crystal indicator institute outgoing is fitted and is provided with; This switch panel comprises first transparency carrier and second transparency carrier; Be coated with nesa coating respectively on this first transparency carrier and the second transparency carrier facing surfaces; Also be laid with alignment films on two nesa coating facing surfaces respectively, and form an angle between the orientation slots on two alignment films; Be filled with liquid crystal layer between two alignment films, this liquid crystal layer is used for periodically reversing under the switching signal that the switch panel nesa coating feeds drives.
For achieving the above object, the present invention also provides the another kind of switch panel that is used for three-dimensional display apparatus, this three-dimensional display apparatus comprises liquid crystal indicator and this switch panel of outgoing polarizability portrait, and wherein, a side of the portrait of this switch panel and liquid crystal indicator institute outgoing is fitted and is provided with; This switch panel comprises at least one transparency carrier, is filled in the liquid crystal layer between transparency carrier and the liquid crystal indicator, and two transparency electrodes that apply drive signal to liquid crystal layer; This switch panel also comprises along the alignment films of the first mode arrangement design liquid crystal layer; According to the drive signal that applies to liquid crystal layer, liquid crystal layer is arranged along second mode.
For achieving the above object, the present invention also provides a kind of liquid crystal display systems, adopt the above-mentioned any switch panel that is used for three-dimensional display apparatus of the present invention, wherein, this liquid crystal display systems also comprises the liquid crystal indicator of outgoing polarizability portrait in the three-dimensional display apparatus, and the analyzing glasses, the polaroid that has been sticked respectively on two eyeglasses of these analyzing glasses, and the angle between two polaroid polarization directions is 90 degree.
By above technical scheme as can be known, the present invention adopts and at the liquid crystal indicator front end switch panel is set, the linearly polarized photon that penetrates from liquid crystal indicator is carried out the technological means of periodic deflection, the image that makes final outgoing is the periodically variable linearly polarized photon in polarization direction, this linearly polarized photon can offer the user and receive from left eye and right eye respectively, can reach the 3-D display effect after handling in brain.When realizing the 3-D display effect, three-dimensional display apparatus of the present invention is simple in structure, lightening, and the analyzing glasses that need be used require low, and driving method is simple, so that whole liquid crystal display systems simple in structure, cost is low, be easy to produce and use aspect promoting.Overcome the high technical matters of display device structure complexity, cost that realizes the three-dimensional imaging function in the prior art.
Also in conjunction with the accompanying drawings the present invention is described in further detail below by specific embodiment.
Description of drawings
Fig. 1 is the structural representation of a kind of LCD in the prior art;
Fig. 2 is the fractionation structural representation of liquid crystal indicator in the available liquid crystal display;
Fig. 3 is the fragmentary top TV structure synoptic diagram of array base palte in the available liquid crystal display;
Fig. 4 is a liquid crystal layer twisting states plan structure synoptic diagram in the available liquid crystal display;
Fig. 5 is used for the structural representation of the switch panel specific embodiment one of three-dimensional display apparatus for the present invention;
Fig. 6 is used for the fractionation structural representation of the switch panel specific embodiment one of three-dimensional display apparatus for the present invention;
The view of liquid crystal molecule when Fig. 7 is used for switch panel specific embodiment one energising of three-dimensional display apparatus for the present invention;
Fig. 8 is used for the switch panel specific embodiment switching signal synoptic diagram of three-dimensional display apparatus for the present invention;
Fig. 9 is used for the structural representation of the switch panel specific embodiment three of three-dimensional display apparatus for the present invention;
Figure 10 is the structural representation of liquid crystal display systems specific embodiment of the present invention;
Working state schematic representation when Figure 11 a does not apply voltage for switch panel in the liquid crystal display systems specific embodiment of the present invention;
Working state schematic representation when Figure 11 b applies voltage for switch panel in the liquid crystal display systems specific embodiment of the present invention.
Among the figure:
100-module 200-backlight liquid crystal indicator 210-goes up polaroid
220-color membrane substrates 230-liquid crystal layer 240-array base palte
241-pixel electrode 242-data line 243-gate electrode sweep trace
Polaroid 260-first liquid crystal layer under the 244-TFT on-off element 250-
300-outside framework 500-switch panel 510-first transparency carrier
The 520-nesa coating 530-first alignment films 540-second liquid crystal layer
The 550-second transparency carrier 560-second alignment films 570-the 3rd transparency carrier
580-the 3rd alignment films 590-the 3rd transparency electrode 600-analyzing glasses
Embodiment
The switch panel embodiment one that is used for three-dimensional display apparatus
Be illustrated in figure 5 as the structural representation that the present invention is used for the switch panel specific embodiment one of three-dimensional display apparatus, this switch panel 500 specifically can be applied in the three-dimensional display apparatus, makes this three-dimensional display apparatus comprise the liquid crystal indicator 200 and switch panel 500 two large divisions of outgoing polarizability portrait.This liquid crystal indicator 200 is equivalent to existing liquid crystal indicator, can be with reference to structure shown in Figure 2, comprise the liquid crystal layer 230 in the suitable and available liquid crystal display panel of following polaroid 250 that order is provided with, array base palte 240, first liquid crystal layer 260, color membrane substrates 220 and last polaroid 210, the first liquid crystal layers 260.Wherein, 220 pairs of box settings of array base palte 240 and color membrane substrates, array base palte 240 and color membrane substrates 220 both sides be respectively arranged with the polarization direction perpendicular on polaroid 210 and following polaroid 250, between array base palte 240 and color membrane substrates 220, be filled with first liquid crystal layer 260.As required resolution is formed with the pixel cell that matrix form is arranged on array base palte 240, each pixel cell correspondence is provided with pixel electrode 241 and TFT on-off element 244, can be referring to shown in Figure 3, pixel electrode 241 is connected on data line 242 and the gate electrode sweep trace 243 by TFT on-off element 244.The switch panel 500 of this three-dimensional display apparatus penetrates a side with the polaroid portraint of liquid crystal indicator 200 and fits and be provided with as shown in Figure 5, that is: a side of polaroid 210 and display panels 200 be closely or the less setting of fitting with gap arranged on closing on.The concrete structure of switch panel 500 comprises as shown in Figure 6: first transparency carrier 510 and second transparency carrier 550 that opposing parallel is provided with; Be coated with equally distributed nesa coating 520 respectively on this first transparency carrier 510 and second transparency carrier, 550 facing surfaces; On two nesa coating facing surfaces, also be laid with first alignment films 530 and second alignment films 560 respectively, and first alignment films 530 is vertical mutually with the orientation slots on second alignment films 560; Be filled with second liquid crystal layer 540 between first alignment films 530 and second alignment films 560, this second liquid crystal layer 540 is used for switching signal that the nesa coating 520 at switch panel 500 is passed into and periodically reverses under driving.
In the present embodiment, structure, principle of work and the function of the liquid crystal indicator that is used to switch panel are similar to prior art, the switch panel of present embodiment is arranged between liquid crystal indicator and the beholder, so need and to reduce stopping as far as possible to light, first transparency carrier and second transparency carrier all adopt transparent material to make, and specifically can adopt materials such as plastics or glass.Similarly, nesa coating need adopt pellucidly and conductive material is made, and preferably adopts the material of existing preparation pixel electrode, and for example indium tin oxide (being called for short ITO) then can make full use of the material that uses in the existing preparation LCD.
The present embodiment switch panel is in application, and the principle of work of liquid crystal indicator forms linearly polarized photon as mentioned above behind liquid crystal indicator.Switch panel is a key point of the present invention, it is the special construction liquid crystal panel that is used to rotate this linearly polarized photon, its principle of work is: because the liquid crystal molecule of different directions is the principal element that optical characteristics is impacted, be respectively arranged with orthogonal first, second alignment films of orientation slots in the both sides of second liquid crystal layer, because the stickability of liquid crystal, so close on alignment films liquid crystal molecule will with the equidirectional distribution of orientation slots, and intervenient liquid crystal molecule will revolve gradually and turn 90 degrees aligned twisted.When the electrically conducting transparent of first transparency carrier and second transparency carrier is intermembranous when not applying voltage, the liquid crystal molecule aligned twisted, can be referring to Fig. 2 and Fig. 4, the linearly polarized photon that is penetrated by display panels is by second liquid crystal layer time, because the optical activity of liquid crystal becomes elliptically polarized light, up to forming and the vertical polarization light in initial polarization direction; And when the electrically conducting transparent of first transparency carrier and second transparency carrier is intermembranous when applying voltage, all liquid crystal molecules will be arranged by direction of an electric field, liquid crystal molecule does not twist, as shown in Figure 7, when linearly polarized photon passes through, light polarization does not change, and therefore sees through light and still penetrates by former polarization direction.Based on above principle, the linear polarization light time when penetrate certain orientation from display panels, under the state of switch panel on/off, can obtain the mutually perpendicular two kinds of linearly polarized photons in polarization direction.Realizing penetrating two kinds of linearly polarized photons can make this liquid crystal indicator possess the function that presents 3-D view.When the beholder wears left eye and right eye eyeglass and attaches the analyzing glasses of polarization direction vertical polarization sheet respectively, can see the image of corresponding polarization direction by left eye, see the image that the polarization direction is vertical from right eye, if the energy supply periodic break-make of switch panel, and it is intensive at interval, for example the time with every two field picture is that unit carries out on-off switch, then the imperceptible frame of beholder is interrupted, can see continuous picture respectively from left eye and right eye, the vertical image in polarization direction makes up in beholder's brain, can present three-dimensional image effect.
In concrete the application, present embodiment be used for three-dimensional display apparatus the driving method that switch panel adopted can for: according to synchronizing signal, data line input data drive signal on LCD device array substrates, to gate electrode sweep trace input scan drive signal, be used between liquid crystal indicator, forming the electric field that changes, reverse display image to drive liquid crystal molecule, simultaneously according to two the nesa coating input switch signals of synchronizing signal to switch panel, realize the appearing and subsiding of electric field between switch panel, second liquid crystal layer that is used for the driving switch panel periodically reverses, with the polarization direction counter-rotating of the linearly polarized photon of liquid crystal indicator outgoing.Switching signal T1 can be periodically variable high-low level, and is preferably corresponding with synchronizing signal T2 as shown in Figure 8, is clock pulse signal, also can be identical with the frequency of synchronizing signal.
Adopt above-mentioned driving method that the switch panel of present embodiment is carried out sequential control, make the image of liquid crystal indicator show with the polarisation rotation of switch panel synchronous.Realized that not only observer's eyes receive different images, also finished the frequency of liquid crystal indicator playing image and switch panel synchronously, make the beholder can see the continuous three-dimensional image, guarantee that the image that the different eyes of beholder receive can enter eyes continuously exactly respectively.Like this, when showing 3-D view, the image that liquid crystal indicator will enter right and left eyes plays out with certain broadcast frequency interval, and switching signal is the gauge tap panel synchronously, when playing left-eye image, apply high voltage, when playing eye image, do not apply voltage.Therefore, the observer wears light analyzing glasses and just can observe 3-D view.
The technical scheme of present embodiment is by being provided with the polarization of light direction that switch panel changes image at the liquid crystal indicator front end, make the front and back two two field picture polarization directions of the shown consecutive image of LCD different, cooperate the use of analyzing glasses again, make two of beholders receive different but corresponding image, thereby reach preferable three-dimensional imaging effect.When the present embodiment switch panel is applied to three-dimensional display apparatus,, simple to the power control method of switch panel by the secondary utilization realization three-dimensional imaging of liquid crystal optical activity.When possessing the three-dimensional imaging function,, and parts such as polaroid, following polaroid are not set because switch panel only adopts one deck liquid crystal layer, so structural design is simple, than the congenerous product, its structure is more lightening, cost is lower, is easy to promote produce.The structure of the analyzing glasses that the user need wear is also simpler, reduces cost so further reached, the convenient purpose of using.
In the present embodiment on two alignment films of switch panel orientation slots be preferred implementation mutually vertically, the strictness of mating plate polarization direction vertically is more conducive to right and left eyes and distinguishes different polarized light districts, avoid the image of different polarization light to mix in same eyes, it is the perfect conditions of three-dimensional imaging that the different images strictness enters different eyes.But it is 90 degree that the angle between the orientation slots of two alignment films is not limited to, and the polarized light polarization direction of outgoing in the switch panel depends mainly on the switching signal that is applied on second liquid crystal layer.Under orientation slots off plumb situation, can control the polarization direction of outgoing polarized light by adjusting switching signal.
The switch panel embodiment two that is used for three-dimensional display apparatus
The present invention is used for the technical scheme of switch panel specific embodiment two of three-dimensional display apparatus and the difference of embodiment one is: nesa coating can not adopt the film of even laying, but form this conduction region and the corresponding setting of pixel cell on the array base palte by the conduction region that matrix form is arranged.Further, first transparency carrier and on nesa coating can be identical with first alignment films with the structure of array base palte, the glass substrate that is about to array base palte is as first transparency carrier, pixel electrode on the array base palte is as nesa coating, and the alignment films that attaches on the array base palte is as first alignment films.
The present embodiment technical scheme is to utilize the parts of the existing array base palte that has prepared as switch panel than the advantage of the foregoing description one, can save production cost.Because switch panel is the center with second liquid crystal layer, in fact can be symmetrically arranged, so second transparency carrier and on nesa coating, second alignment films also can be identical with the structure of array base palte.First transparency carrier of employing array base-plate structure or second transparency carrier and last polaroid close on and are sticked.
In concrete the application, the laying of nesa coating can be matrix form, also can be determined on a case-by-case basis for random multiple situation such as arrange.
Compare and existing liquid crystal indicator,, need not inclined to one side, the analyzing effect of plaing of polaroid and following polaroid, also need not the filter action of color film because the major function of switch panel is the polarization direction of rotation light.So only adopt the relevant parts of former liquid crystal indicator to get final product, structure is more lightening.
The switch panel embodiment three that is used for three-dimensional display apparatus
Be illustrated in figure 9 as the structural representation of the switch panel specific embodiment three of three-dimensional display apparatus of the present invention, this switch panel 500 is applied to three-dimensional display apparatus, and this three-dimensional display apparatus comprises the liquid crystal indicator 200 and switch panel 500 of outgoing polarizability portrait.This liquid crystal indicator 200 can adopt the concrete structure in the foregoing description one, and this switch panel 500 is fitted with a side of liquid crystal indicator 200 polaroid portraints institute outgoing and is provided with.The structure of this switch panel 500 comprises: at least one the 3rd transparency carrier 570, the second liquid crystal layers 540 and two the 3rd transparency electrodes 590.This second liquid crystal layer 540 is filled between the 3rd transparency carrier 570 and the liquid crystal indicator 200, two the 3rd transparency electrodes 590 are used for applying drive signal to second liquid crystal layer 540, be specifically as follows electrode arbitrary form, that can apply electric field to second liquid crystal layer 540, for example the nesa coating of being put down in writing among the embodiment one.This switch panel 500 also comprises along the 3rd alignment films 580 of the first mode arrangement design, second liquid crystal layer 540, orientation slots design on the 3rd alignment films 580 makes second liquid crystal layer 540 be first mode when not applying electric field and arranges, concrete, the 3rd alignment films 580 can be separately positioned on the 3rd transparency carrier 570 and liquid crystal indicator 200 facing surfaces.When work, the drive signal that applies to second liquid crystal layer 540 according to two the 3rd transparency electrodes 590, second liquid crystal layer 540 is arranged along second mode, and so-called second mode i.e. the arrangement mode of second liquid crystal layer 540 under the electric field action that the 3rd transparency electrode 590 is applied.
In the present embodiment, first mode of arranging second liquid crystal layer can be the horizontal mode parallel with the 3rd transparency carrier, and second mode of arranging second liquid crystal layer is the vertical arrangement mode vertical with the 3rd transparency carrier.Principle that present embodiment realization liquid crystal indicator 3-D view shows and the principle of work of embodiment one are basic identical, can be according to synchronizing signal to liquid crystal indicator input data drive signal and scanning drive signal, be used to drive the liquid crystal indicator display image, while, to switch panel input switch signal, second liquid crystal layer that is used for the driving switch panel periodically reversed according to synchronizing signal.
Present embodiment periodically applies electric field to second liquid crystal layer by switch panel, make second liquid crystal layer with the 3rd transparency carrier level and vertical direction between the reversing of generating period, thereby change from the polarization direction of the polarization image of liquid crystal indicator outgoing by second liquid crystal layer, cooperate the use of analyzing glasses, just can in observer's brain, present 3-D view.The structure of this switch panel is than the technical scheme of the foregoing description one and embodiment two, the surface that further utilizes liquid crystal indicator is as the layer of transparent substrate, therefore make the structure of switch panel simpler, can make three-dimensional display apparatus more lightening, also can guarantee good three-dimensional imaging effect simultaneously.
The switch panel of present embodiment, first mode and second mode that second liquid crystal layer is arranged are not limited to above-mentioned a kind of, first mode of this arrangement liquid crystal layer can all be the horizontal mode parallel with the 3rd transparency carrier with second mode, and form an angle between first mode and second mode, this angle is 90 degree preferably.First mode and second mode with have an angle in the 3rd transparency carrier is parallel horizontal plane, can realize that second liquid crystal layer reverses in the direction that applies the electric field front and back, promptly can change the polarization direction of the polaroid portraint of liquid crystal indicator outgoing, cooperate the use of analyzing glasses and realize the three-dimensional imaging effect.
Liquid crystal display systems embodiment
Be the structural representation of liquid crystal display systems specific embodiment of the present invention as shown in figure 10, this liquid crystal display systems can adopt the present invention to be used for the technical scheme of the switch panel any embodiment of three-dimensional display apparatus.This liquid crystal display systems specifically comprises: module 100 backlight, three-dimensional display apparatus, outside framework 300, picture signal drive unit (not shown) and the signal Synchronization device (not shown) be made up of the liquid crystal indicator 200 and the switch panel 500 of outgoing polarizability portrait, wherein: this module 100 backlight is sticked in a side of liquid crystal indicator 200 outgoing polarizabilities portrait, promptly close on a side of liquid crystal indicator 200, switch panel 500 is arranged on the outside; Outside framework 300 is around in the outside of three-dimensional display apparatus and module backlight 100, and picture signal drive unit and signal Synchronization device also can be arranged among the outside framework 300; The picture signal drive unit links to each other with liquid crystal indicator 200 in the three-dimensional display apparatus, is used to drive liquid crystal indicator 200 display images; This liquid crystal display systems also is provided with the signal Synchronization device, links to each other respectively with the transparency electrode of switch panel 500 in the three-dimensional display apparatus, and second liquid crystal layer that is used for output switching signal driving switch panel 500 periodically reverses.
In the liquid crystal display systems of present embodiment, may further include the analyzing glasses, the polaroid that has been sticked respectively on two eyeglasses of these analyzing glasses, and the polarization direction of two polaroids is vertical mutually, these analyzing glasses and three-dimensional display apparatus are used, and realize that two receive different images.This analyzing glasses simple in structure conveniently worn, and cost is low, so can apply widely.
The present embodiment liquid crystal display systems can be carried out the driving method of switch panel of the present invention when work, after the signal Synchronization device was found out the broadcast frequency of display panels according to synchronizing signal, the gauge tap panel formed a cover 3-D imaging system.Figure 11 a is depicted as switch panel 500 and does not apply system works situation under the voltage status, and the polarized light that 500 pairs of liquid crystal indicators of switch panel 200 penetrate carries out 90 degree rotations, light by analyzing glasses 600 left sides in the same way the polarized light eyeglass only enter left eye; Figure 11 b is depicted as the state that switch panel 500 is applied voltage, and the polarization of light that is penetrated by liquid crystal indicator 200 does not change, and therefore enters right eye by analyzing glasses 600 right side polarized lenses, has realized the purpose of eyes observation different images.
Liquid crystal display systems of the present invention can adopt the technical scheme of the arbitrary embodiment of switch panel of the present invention, and this liquid crystal display systems can possess the function of three-dimensional imaging, and simple in structure, cost is low, be easy to apply.
In switch panel of the present invention and the liquid crystal display systems, the second related liquid crystal layer can adopt the liquid crystals preparation of different conditions, the foregoing description is all with twisted nematic (Twisted Nematic, abbreviation TN) the state liquid crystal describes as the material of preparation second liquid crystal layer, but the present invention is not limited to this, also can adopt super-twist nematic (Super Twisted Nematic, be called for short STN), fringe field switching type (Fringe Field Switching, abbreviation FFS) liquid crystals preparation second liquid crystal layer of state, as long as suitably adjust the angle between two orientation slots, and the adjustment switching signal gets final product.
It should be noted that at last: above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment to the technical scheme that aforementioned each embodiment put down in writing, and perhaps part technical characterictic wherein is equal to replacement; And these modifications or replacement do not make the essence of appropriate technical solution break away from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1, a kind of switch panel that is used for three-dimensional display apparatus, described three-dimensional display apparatus comprises the liquid crystal indicator and the described switch panel of outgoing polarizability portrait, it is characterized in that: a side of the portrait institute outgoing of described switch panel and described liquid crystal indicator is fitted and is provided with; Described switch panel comprises first transparency carrier and second transparency carrier; Be coated with nesa coating respectively on described first transparency carrier and the second transparency carrier facing surfaces; Also be laid with alignment films respectively on two described nesa coating facing surfaces, and form an angle between the orientation slots on two described alignment films; Be filled with liquid crystal layer between two described alignment films, described liquid crystal layer is used for periodically reversing under the switching signal that described switch panel nesa coating feeds drives.
2, the switch panel that is used for three-dimensional display apparatus according to claim 1 is characterized in that: described angle is 90 degree.
3, the switch panel that is used for three-dimensional display apparatus according to claim 2, it is characterized in that: import data drive signal and scanning drive signal to liquid crystal indicator according to synchronizing signal, be used to drive described liquid crystal indicator display image, simultaneously according to described synchronizing signal to described switch panel input switch signal, the liquid crystal layer that is used for driving described switch panel periodically reverses.
4, the switch panel that is used for three-dimensional display apparatus according to claim 3 is characterized in that: described switching signal is identical with the frequency of described synchronizing signal.
5, a kind of switch panel that is used for three-dimensional display apparatus, described three-dimensional display apparatus comprises the liquid crystal indicator and the described switch panel of outgoing polarizability portrait, it is characterized in that: a side of the portrait institute outgoing of described switch panel and described liquid crystal indicator is fitted and is provided with; Described switch panel comprises at least one transparency carrier, is filled in the liquid crystal layer between described transparency carrier and the described liquid crystal indicator, and two transparency electrodes that apply drive signal to described liquid crystal layer; Described switch panel also comprises along the alignment films of the first mode arrangement design liquid crystal layer; According to the described drive signal that applies to liquid crystal layer, liquid crystal layer is arranged along second mode.
6, the switch panel that is used for three-dimensional display apparatus according to claim 5, it is characterized in that: first mode of described arrangement liquid crystal layer is the horizontal mode parallel with described transparency carrier, and second mode of described arrangement liquid crystal layer is the vertical arrangement mode vertical with described transparency carrier.
7, the switch panel that is used for three-dimensional display apparatus according to claim 5, it is characterized in that: first mode of described arrangement liquid crystal layer all is the horizontal mode parallel with described transparency carrier with second mode, forms an angle between described first mode and second mode.
8, the switch panel that is used for three-dimensional display apparatus according to claim 7 is characterized in that: described angle is 90 degree.
9, the switch panel that is used for three-dimensional display apparatus according to claim 5, it is characterized in that: import data drive signal and scanning drive signal to liquid crystal indicator according to synchronizing signal, be used to drive described liquid crystal indicator display image, while to switch panel input switch signal, is used for driving the liquid crystal layer of described switch panel according to described synchronizing signal.
10, a kind of liquid crystal display systems that adopts the described arbitrary switch panel of claim 1～9, it is characterized in that: the liquid crystal indicator that also comprises outgoing polarizability portrait in the described three-dimensional display apparatus, and analyzing glasses, the polaroid that has been sticked respectively on two eyeglasses of described analyzing glasses, and the angle between two described polaroid polarization directions is 90 degree.
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| CN2008101036077A CN101556390B (en) | 2008-04-09 | 2008-04-09 | Switch panel and liquid crystal display system for three-dimensional display device |
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| CN2008101036077A CN101556390B (en) | 2008-04-09 | 2008-04-09 | Switch panel and liquid crystal display system for three-dimensional display device |
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