CN101968595A - 2D and 3D switching liquid crystal lens assembly and display device - Google Patents
2D and 3D switching liquid crystal lens assembly and display device Download PDFInfo
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- CN101968595A CN101968595A CN2010105124214A CN201010512421A CN101968595A CN 101968595 A CN101968595 A CN 101968595A CN 2010105124214 A CN2010105124214 A CN 2010105124214A CN 201010512421 A CN201010512421 A CN 201010512421A CN 101968595 A CN101968595 A CN 101968595A
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 256
- 230000005684 electric field Effects 0.000 claims abstract description 19
- 230000010287 polarization Effects 0.000 claims description 16
- 230000003287 optical effect Effects 0.000 claims description 13
- 239000002245 particle Substances 0.000 abstract 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 16
- 239000011521 glass Substances 0.000 description 11
- 239000000758 substrate Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 4
- 210000004556 brain Anatomy 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
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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
- G02F1/29—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 position or the direction of light beams, i.e. deflection
- G02F1/291—Two-dimensional analogue deflection
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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
- G02F1/29—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 position or the direction of light beams, i.e. deflection
- G02F1/294—Variable focal length devices
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Abstract
The invention discloses an automatic stereoscopic display device and a liquid crystal lens assembly, wherein the liquid crystal lens assembly sequentially comprises a concave lens, a birefringence liquid crystal convex lens and an electrode layer. The liquid crystal convex lens is embedded in the concave lens and has an ordinary light refraction index and an extraordinary light refraction index, and an electric field generated by a plurality of control electrodes of the electrode layer can adjust the orientation of liquid crystal particles of the liquid crystal convex lens to adjust the equivalent refraction index thereof so that the equivalent refraction index is between the refraction index of the concave lens and the refraction index of the birefringence liquid crystal convex lens. The invention aims to compensate the need of the human eyes for a light refraction angle when observing the automatic stereoscopic display device at different distances. In addition, the extraordinary light refraction index is far lager than the ordinary light refraction index, i.e. incoming polarized light acquires a large refraction index change when the liquid crystal particles turn at a small angle so as to achieve the 2D and 3D switching aim. The rotation of switching at a small angle can be finished by only needing a small electric field so as to reduce electricity consumption.
Description
Technical field
The present invention relates to a kind of display device, refer to liquid crystal lens assembly and display device thereof that a kind of 2D/3D switches especially.
Background technology
The mankind see through the prospect that eyes see and the image that perceives real world.And human brain can be further sees that according to eyes space length difference between the prospect of two different angles forms so-called 3 and ties up (3-dimension, 3D) images.This space length difference is called as parallax (parallax).So-called 3D display device is exactly the visual field of simulating human eyes different angles, allows images of left and right eyes receive two 2D images of parallax respectively, make human brain obtain the different 2D images that images of left and right eyes sees after, can be perceived as the 3D image.
Present 3D display device mainly is divided into two classes, is respectively autostereoscopic display apparatus (Auto-stereoscopic display) and non-automatic 3 d display device (Stereoscopic display).The glasses that the user of autostereoscopic display apparatus need not put on special construction are 3D stereopsis as can be seen just.Another kind of non-automatic 3 d display device then needs the user to put on special glasses, just can see the 3D stereopsis.Common autostereoscopic display apparatus has two kinds: slit grating formula autostereoscopic display apparatus and microlens array formula 3 d display device.The principle of slit grating formula autostereoscopic display apparatus is to rely on lighttight disparity barrier (parallax barrier) to allow user's right and left eyes see the image with parallax, and this parallax will form stereoscopic sensation in brain.Be to use lens subassembly as a lenticular lenses (Lenticular Lens) and be attached on the liquid crystal panel as for microlens array formula 3 d display device, this lens subassembly is agreed with by single refraction rate microlens array and birefraction lenticule array to be formed.The material of this birefraction microlens array is a liquid crystal.Utilization puts on the lenticular electric field change of birefraction, makes the arrangement of liquid crystal molecule be transformed into vertical direction by horizontal direction, and its refractive index is then by ordinary refraction index n
oBecome the non-optical index n that seeks
eThus, the light that is incident to this lens subassembly has different light directions because of the lenticular refractive index change of birefringence (Birefringence) rate.By this principle, the observer can see the light of two kinds of different refraction angles, so can reach the switching of 2D/3D image.Yet, the conventional lenses assembly is that two-layer control electrode is placed on the lenticular upper/lower terminal of this birefraction respectively, and the electric field that the driving voltage difference of utilizing this two-layer control electrode is produced is adjusted to vertical direction with liquid crystal molecule by horizontal direction, and in general this driving voltage difference reaches more than the 5V.Therefore if can make a kind of low driving voltage lens subassembly that the 2D/3D image switches that is used for, the demand of environmental protection will be met more.
Summary of the invention
Therefore the purpose of this invention is to provide liquid crystal lens assembly and the display device thereof that a kind of 2D/3D switches, this liquid crystal lens assembly is to utilize the electric field that control electrode produced that is positioned on the electrode layer, adjust the refractive index of birefraction convex lens, to solve the problem of background technology.
The invention provides the display device that a kind of 2 dimensions/3 dimension show images switch, comprise a backlight module, a liquid crystal panel and a liquid crystal lens assembly, described backlight module is used to produce light, described liquid crystal panel is used for according to the light show image of described backlight module generation, and the light that described liquid crystal panel transmits is polarized light.Described liquid crystal lens assembly comprises the strip concavees lens of a plurality of adjacent arrangements and the strip liquid crystal convex lens of a plurality of adjacent arrangements in regular turn from exiting surface to incidence surface.The strip liquid crystal convex lens of described a plurality of adjacent arrangements, one one corresponding described a plurality of concavees lens, described a plurality of strip liquid crystal convex lens comprise a transparency carrier, one is positioned at the electrode layer on this transparency carrier, and one first liquid crystal layer, this first liquid crystal layer is sandwiched between these concavees lens and the transparency carrier.This electrode layer comprises a plurality of control electrodes, described a plurality of control electrode is used to control the orientation of liquid crystal molecule of described birefringence liquid crystal convex lens to adjust its equivalent refractive index, makes the equivalent refractive index of described liquid crystal convex lens be equal to, or greater than first refractive index of described concavees lens.
The present invention provides a kind of liquid crystal lens assembly in addition, and it comprises the strip concavees lens of a plurality of adjacent arrangements and the strip liquid crystal convex lens of a plurality of adjacent arrangements in regular turn from exiting surface to incidence surface.The strip liquid crystal convex lens of described a plurality of adjacent arrangements, one one corresponding described a plurality of concavees lens, described a plurality of strip liquid crystal convex lens comprise a transparency carrier, one is positioned at the electrode layer on this transparency carrier, and one first liquid crystal layer, this first liquid crystal layer is sandwiched between these concavees lens and the transparency carrier.This electrode layer comprises a plurality of control electrodes, described a plurality of control electrode is used to control the orientation of liquid crystal molecule of described birefringence liquid crystal convex lens to adjust its equivalent refractive index, makes the equivalent refractive index of described liquid crystal convex lens be equal to, or greater than first refractive index of described concavees lens.
According to embodiments of the invention, the refractive index of described concavees lens equals the ordinary refraction index of the liquid crystal molecule of described first liquid crystal layer.
According to embodiments of the invention, described control electrode is a strip, and its bearing of trend is consistent with described strip liquid crystal convex lens bearing of trend.This liquid crystal lens assembly cooperates linearly polarized photon to use, and described a plurality of strip liquid crystal convex lens extend along a first direction, and along second direction arrangement, this first direction is perpendicular to this second direction, and the polarization direction of described polarized light is perpendicular to first direction.Described liquid crystal convex lens comprise that further one is arranged at the alignment film on surface of close described first liquid crystal layer of described transparency carrier, and this alignment film makes the liquid crystal molecule of described first liquid crystal layer when being not applied to electric field, and optical axis is parallel to described first direction.The liquid crystal molecule of described first liquid crystal layer is that optical axis direction can be along being parallel to the positivity liquid crystal that direction of an electric field is arranged, and the liquid crystal molecule of described first liquid crystal layer is when being applied in electric field, and optical axis and first direction are angled.
According to embodiments of the invention, the extraordinary ray refractive index of the liquid crystal molecule of described first liquid crystal layer is greater than 1.2 times ordinary refraction index.
According to embodiments of the invention, described concavees lens are a pair of refraction liquid crystal concavees lens, and it comprises one second liquid crystal layer, and this liquid crystal layer comprises the liquid crystal molecule of a plurality of orientations perpendicular to described transparency carrier.
According to embodiments of the invention, described concavees lens are a pair of refraction liquid crystal concavees lens, and it comprises one second liquid crystal layer, and this liquid crystal layer comprises that a plurality of orientations are parallel to the liquid crystal molecule of described transparency carrier.
Compared to prior art, display device of the present invention can see through the liquid crystal molecule rotational angle of driving voltage control liquid crystal convex lens, can change the refringence of the equivalent refractive index of liquid crystal convex lens with the refractive index of this equivalence refractive index of dynamic adjustment and concavees lens.Its purpose is to compensate eye-observation display device distance not simultaneously, the demand of anaclasis angle.In addition, allow the extraordinary ray refractive index of liquid crystal convex lens much larger than ordinary refraction index, when then liquid crystal molecule rotated a few degrees, incident polarized light just obtained bigger variations in refractive index and reaches the purpose that 3D/2D switches.This also represents and need can reach by less electric field once switching a few degrees rotation, can save the consumption of electric power indirectly.
For foregoing of the present invention can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below:
Description of drawings
Fig. 1 is the synoptic diagram of the display device of demonstration 3-dimensional image of the present invention.
Fig. 2 is the orientation of liquid crystal molecule and the synoptic diagram of incident polarization light polarization direction.
The light path synoptic diagram of polarized light when Fig. 3 illustrates the section of liquid crystal lens assembly of first embodiment of Fig. 1 and the liquid crystal molecule in the convex lens and do not change orientation.
Fig. 4 illustrates the light path synoptic diagram that the section of liquid crystal lens assembly of first embodiment of Fig. 1 and the liquid crystal molecule in the convex lens change the incident polarized light after the orientation.
The light path synoptic diagram of polarized light when Fig. 5 illustrates the section of liquid crystal lens assembly of second embodiment and the liquid crystal molecule in the convex lens and do not change orientation.
Fig. 6 illustrates the light path synoptic diagram that the section of liquid crystal lens assembly of second embodiment and the liquid crystal molecule in the convex lens change the incident polarized light after the orientation.
The light path synoptic diagram of polarized light when Fig. 7 illustrates the section of liquid crystal lens assembly of the 3rd embodiment and the liquid crystal molecule in the convex lens and do not change orientation.
Fig. 8 illustrates the light path synoptic diagram that the section of liquid crystal lens assembly of the 3rd embodiment and the liquid crystal molecule in the convex lens change the incident polarized light after the orientation.
Embodiment
Below the explanation of each embodiment be with reference to additional graphic, can be in order to illustration the present invention in order to the specific embodiment of enforcement.The direction term that the present invention mentioned, for example " on ", D score, " preceding ", " back ", " left side ", " right side ", " top ", " end ", " level ", " vertically " etc., only be direction with reference to annexed drawings.Therefore, the direction term of use is in order to explanation and understands the present invention, but not in order to restriction the present invention.
See also Fig. 1, Fig. 1 is the synoptic diagram of the display device 100 of demonstration 3-dimensional image of the present invention.When the user watches display device 100, can switch and watch 2D or 3D image.Display device 100 comprises backlight module 102, liquid crystal panel 110, is positioned at the polaroid of liquid crystal panel 110 both sides (polarizer film) 114,115 and liquid crystal lens assembly 120.Backlight module 102 provides uniform surface light source for this liquid crystal panel.Liquid crystal panel 110 provides liquid crystal material between a pair of transparent glass substrate, and (Indium Tin Oxide is ITO) as conductive electrode to lay transparent indium tin oxide on glass substrate.Liquid crystal panel 110 comprises the pel array of being made up of a plurality of pixels 112, the backlight illumination that produces when backlight module 102 can be adjusted the rotation direction of the liquid crystal molecule of corresponding each pixel and shows different GTGs so that adjust the intensity of ejaculation backlight by driving pixel 112 on display panels 110.Liquid crystal panel 110 is between polaroid 114,115, and polaroid 114,115 polarizing axis direction each other differs 90 °.Polaroid 114,115 can make the light of transmission only have corresponding polarizing axis direction according to the angle of its polarizing axis.It is that example describes that the present invention is parallel to the B direction with the polarization of light direction that penetrates from polaroid 115, but is not limited thereto.
See also Fig. 1 to Fig. 3, Fig. 2 is the orientation of liquid crystal molecule and the synoptic diagram of incident polarization light polarization direction.The light path synoptic diagram of polarized light when the liquid crystal molecules of liquid crystal lens assembly 120 in the sectional view of direction shown in Fig. 1 arrow A and convex lens 122 that Fig. 3 illustrates first embodiment of Fig. 1 do not change orientation.Liquid crystal lens assembly 120 from exiting surface 132 to incidence surface 130 comprise transparent glass substrate 121a in regular turn, several are parallel to each other and the strip concavees lens 124 that extend towards first direction A and several are parallel to each other and extend and the strip liquid crystal convex lens 122 of corresponding one by one chimeric concavees lens 124 towards first direction A.Liquid crystal convex lens 122 comprise that a transparency carrier 121b, is positioned at electrode layer 123 and one first liquid crystal layer on the transparent glass substrate 121b, and this first liquid crystal layer is sandwiched between concavees lens 124 and the transparent glass substrate 121b.Each strip concave lens 124 and each strip liquid crystal convex lens 122 are to arrange towards second direction B, and first direction A is perpendicular to one another with second direction B.In another embodiment, liquid crystal lens assembly 120 does not need transparent glass substrate 121a, only need get final product at the bright dipping side coating diaphragm of concavees lens 124.
See also Fig. 4, Fig. 4 illustrates the light path synoptic diagram that the section of liquid crystal lens assembly 120 of first embodiment of Fig. 1 and the liquid crystal molecules in the convex lens 122 change the incident polarized light after the orientation.When being bestowed driving voltage between the two elongated control electrodes of electrode layer 123, the liquid crystal molecule between this two elongated control electrode rotates.From polaroid 115 penetrate the polarization direction of polarized light be an angle θ with the fast axle (promptly vertical direction) of liquid crystal molecule with optical axis, while liquid crystal convex lens 122 have equivalent refractive index n
EffWhen driving voltage increased, this angle θ also can be big more, equals 90 when spending up to angle θ, and for this polarized light, the refractive index of these liquid crystal convex lens 122 is this first extraordinary ray refractive index n
eIn fact, angle θ is at 0 °～90 ° equivalent refractive index n
EffEquivalent refractive index n with 90 °～180 °
EffBe corresponding, for instance, angle θ is at the equivalent refractive index n of 45 ° and 135 °
EffBe identical.That is to say the first ordinary refraction index n
o(angle θ=0 °) and the first extraordinary ray refractive index n
eThe refringence of (angle θ=90 °) is maximum.So equivalent refractive index n of liquid crystal convex lens 122
EffBe between the first ordinary refraction index n
oWith the first extraordinary ray refractive index n
eBetween.Because the equivalent refractive index n of liquid crystal convex lens 122
EffRefractive index n (=n greater than concavees lens 124
o), so this polarized light enters optically thinner medium by optically denser medium, thus the polarized light of injecting can refraction take place at the face that the connects place of liquid crystal convex lens 122 and concavees lens 124 and focus on human eye, so can see the 3D image the observer of exiting surface 132 1 sides.
In addition, present embodiment can be adjusted the driving voltage size between the two elongated control electrodes that put on electrode layer 123, the angle θ between the fast axle of the polarization direction of the feasible polarized light of injecting and liquid crystal molecule and the equivalent refractive index n of liquid crystal convex lens 122
EffAlso adjust thereupon.Thus, the equivalent refractive index n of liquid crystal convex lens 122
EffAlso can change with the refringence of the refractive index n of concavees lens 124, make that the polarized light of injecting is also slightly variant at the refractive direction of liquid crystal convex lens 122 and concavees lens 124.That is to say that the distance between observer and exiting surface 132 is respectively D1 and D2, utilize the mode of adjusting driving voltage to change the equivalent refractive index n of liquid crystal convex lens 122
EffAfter, still can watch clear and lifelike 3D image.In addition, when selecting the liquid crystal material of convex lens 122, can select the first extraordinary ray refractive index n for use
eMuch larger than the first ordinary refraction index n
oLiquid crystal, n for example
e〉=1.2 * n
oAt this moment, as long as minimum driving voltage just can produce certain electric field and rotate special angle by liquid crystal molecule, and make the bigger two-layer lens of incident polarized light process variations in refractive index to allow display device 100 reach the purpose that 2D/3D switches, the therefore consumption that can save electric power.
In Fig. 3, Fig. 4, liquid crystal convex lens 122 adopt the positivity liquid crystal, that is to say that when two elongated control electrodes of electrode layer 123 produced the electric field of direction shown in the arrow B (that is Fig. 1 arrow B) of Fig. 3, the liquid crystal arrangement direction of liquid crystal convex lens 122 was to be parallel to direction of an electric field.In another embodiment, liquid crystal convex lens 122 also can adopt negative liquid crystal.In this embodiment, arranging along the A direction of slender electrode extended along the B direction.
See also Fig. 5, the light path synoptic diagram of polarized light when Fig. 5 illustrates the section of liquid crystal lens assembly 220 of second embodiment and the liquid crystal molecules in the convex lens 222 and do not change orientation.Liquid crystal lens assembly 220 from exiting surface 230 to incidence surface 232 comprise transparent glass substrate 221a in regular turn, several are parallel to each other and the strip liquid crystal concavees lens 224 that extend to extend towards first direction A and several are parallel to each other and extend and the strip liquid crystal convex lens 222 of corresponding one by one chimeric liquid crystal concavees lens 224 towards first direction A.Liquid crystal convex lens 222 comprise a transparency carrier 221b, are positioned at electrode layer 223 and one first liquid crystal layer on the transparent glass substrate 221b, and this first liquid crystal layer is sandwiched between liquid crystal concavees lens 224 and the transparent glass substrate 221b.Each strip liquid crystal concave lens 224 and each strip liquid crystal convex lens 222 are to arrange towards second direction B, and first direction A is perpendicular to one another with second direction B.Be that with the liquid crystal lens assembly 220 difference parts of previous embodiment liquid crystal concavees lens 224 have one second liquid crystal layer.When the optical axis direction of the liquid crystal molecule of this second liquid crystal layer is parallel to the direction of propagation (that is perpendicular to transparency carrier 221b) of incident light, it has the second ordinary refraction index n
O2Liquid crystal convex lens 222 are birefringence convex lens.Birefringence liquid crystal convex lens 222 have the first ordinary refraction index n
O1With the first extraordinary ray refractive index n
E1The second ordinary refraction index n of liquid crystal concavees lens 224
O2Equal this first ordinary refraction index n
O1As shown in Figure 5, when not bestowed driving voltage between the two elongated control electrodes of electrode layer 223, the orientation meeting of the liquid crystal molecule between this two elongated control electrode is perpendicular to the paper direction.This moment is vertical with the optical axis of liquid crystal molecule by the polarization direction of the polarized light that polaroid 115 is injected via incidence surface 230.Because the first ordinary refraction index n of liquid crystal convex lens 222
O1Equal the second ordinary refraction index n of liquid crystal concavees lens 224
O2So, for injecting the polarized light of liquid crystal convex lens 222, do not have refringence between liquid crystal convex lens 222 and the liquid crystal concavees lens 224, so light can be along rectilinear propagation, so can see the 2D image the observer of exiting surface 232 1 sides.
See also Fig. 6, Fig. 6 illustrates the light path synoptic diagram that the section of liquid crystal lens assembly 220 of second embodiment and the liquid crystal molecules in the convex lens 222 change the incident polarized light after the orientation.When being bestowed driving voltage between the two elongated control electrodes of electrode layer 223, the liquid crystal molecule between this two elongated control electrode rotates.The polarization direction of the polarized light that penetrates from polaroid 115 is an angle θ with the fast axle of liquid crystal molecule, and while liquid crystal convex lens 222 have equivalent refractive index n
EffWhen driving voltage increased, this angle θ also can be big more, equals 90 when spending up to angle θ, and for this polarized light, the refractive index of these liquid crystal convex lens 222 is this first extraordinary ray refractive index n
E1The equivalent refractive index n of liquid crystal convex lens 222
EffBe between the first ordinary refraction index n
O1With the first extraordinary ray refractive index n
E1Between.Because the equivalent refractive index n of liquid crystal convex lens 222
EffThe second ordinary refraction index n greater than liquid crystal concavees lens 224
O2(=n
O1), so this polarized light enters optically thinner medium by optically denser medium, thus the polarized light of injecting can take place at the face that the connects place of liquid crystal convex lens 222 and liquid crystal concavees lens 224 refraction and and in to human eye, so can see the 3D image the observer of exiting surface 232 1 sides.
In addition, present embodiment can be adjusted the driving voltage size between the two elongated control electrodes that put on electrode layer 223, the angle θ between the fast axle of the polarization direction of the feasible polarized light of injecting and liquid crystal molecule and the equivalent refractive index n of liquid crystal convex lens 222
EffAlso adjust thereupon.Thus, the equivalent refractive index n of liquid crystal convex lens 222
EffThe second ordinary refraction index n with liquid crystal concavees lens 224
O2Refringence also can change, make that the polarized light inject is also slightly variant at the refractive direction of liquid crystal convex lens 222 and liquid crystal concavees lens 224.That is to say that the distance between observer and exiting surface 232 is respectively D1 and D2, utilize the mode of adjusting driving voltage to change the equivalent refractive index n of liquid crystal convex lens 222
EffAfter, still can watch clear and lifelike 3D image.In addition, when selecting the liquid crystal material of convex lens 222, can select the first extraordinary ray refractive index n for use
E1Much larger than the first ordinary refraction index n
O1Liquid crystal, n for example
E1〉=1.2 * n
O1At this moment, as long as minimum driving voltage just can produce certain electric field and rotate special angle by liquid crystal molecule, incident polarized light just through the bigger two-layer lens of variations in refractive index allowing display device 100 reach the purpose that 3D/2D switches, the therefore consumption that can save electric power.
In Fig. 5, Fig. 6, liquid crystal convex lens 222 adopt the positivity liquid crystal, that is to say that when two elongated control electrodes of electrode layer 223 produced the electric field of direction shown in the arrow B (that is Fig. 1 arrow B) of Fig. 5, the liquid crystal arrangement direction of liquid crystal convex lens 222 was to be parallel to direction of an electric field.In another embodiment, liquid crystal convex lens 222 also can adopt negative liquid crystal, and in this embodiment, arranging along the A direction of slender electrode extended along the B direction.
See also Fig. 7 and Fig. 8, the light path synoptic diagram of polarized light when Fig. 7 illustrates the section of liquid crystal lens assembly 320 of the 3rd embodiment and the liquid crystal molecules in the convex lens 222 and do not change orientation.Fig. 8 illustrates the light path synoptic diagram that the section of liquid crystal lens assembly 320 of the 3rd embodiment and the liquid crystal molecules in the convex lens 222 change the incident polarized light after the orientation.The assembly that Fig. 7 and Fig. 8 indicated and Fig. 5 and Fig. 6 have same numeral person, its function is identical, does not give unnecessary details in addition at this.Second liquid crystal layer of the birefringence liquid crystal concavees lens 224 of liquid crystal lens assembly 320 comprises that a plurality of orientations are parallel to the liquid crystal molecule of transparency carrier 221b, and just the optical axis direction of liquid crystal molecule is parallel to the polarization of incident light direction.For this polarized light, it has the second extraordinary ray refractive index n
E2Liquid crystal lens assembly 320 is that with the difference of liquid crystal lens assembly 220 refractive index of the liquid crystal concavees lens 224 of liquid crystal lens assembly 320 is fixed as this second extraordinary ray refractive index n
E2When showing stereopsis, as long as select the first ordinary refraction index n of liquid crystal convex lens 222
O1Equal the second extraordinary ray refractive index n
E2, adjust the equivalent refractive index n of liquid crystal convex lens 222 afterwards
EffBetween the first ordinary refraction index n
O1With the first extraordinary ray refractive index n
E1Between get final product.That is to say, as the equivalent refractive index n of liquid crystal convex lens 222
EffBe matched with the second extraordinary ray refractive index n of liquid crystal concavees lens 224
E2, then do not have refringence between liquid crystal convex lens 222 and the liquid crystal concavees lens 224, so light can be along rectilinear propagation, so can see the 2D image the observer of exiting surface 232 1 sides.Equivalent refractive index n when liquid crystal convex lens 222
EffThe second extraordinary ray refractive index n greater than liquid crystal concavees lens 224
E2The time, this polarized light enters optically thinner medium by optically denser medium, and refraction can take place at the face that the connects place of liquid crystal convex lens 222 and liquid crystal concavees lens 224 and focus on human eye in the polarized light of injecting, so can see the 3D image the observer of exiting surface 232 1 sides.
In sum; though the present invention discloses as above with preferred embodiment; but this preferred embodiment is not in order to restriction the present invention; the those of ordinary skill in this field; without departing from the spirit and scope of the present invention; all can do various changes and retouching, so protection scope of the present invention is as the criterion with the scope that claim defines.
Claims (10)
1. a dimension/3 is tieed up the display device that show images switch, comprise a backlight module, a liquid crystal panel and a liquid crystal lens assembly in regular turn, described backlight module is used to produce light, described liquid crystal panel is used for according to the light show image of described backlight module generation, the light that described liquid crystal panel transmits is polarized light, and it comprises this liquid crystal lens assembly in regular turn from exiting surface to incidence surface:
The strip concavees lens of a plurality of adjacent arrangements;
The strip liquid crystal convex lens of a plurality of adjacent arrangements, one one corresponding described a plurality of concavees lens, described a plurality of strip liquid crystal convex lens comprise a transparency carrier, one is positioned at the electrode layer on this transparency carrier, and one first liquid crystal layer, this first liquid crystal layer is sandwiched between these concavees lens and the transparency carrier;
It is characterized in that:
This electrode layer comprises a plurality of control electrodes, described a plurality of control electrode is used to control the orientation of liquid crystal molecule of described birefringence liquid crystal convex lens to adjust its equivalent refractive index, makes the equivalent refractive index of described liquid crystal convex lens be equal to, or greater than first refractive index of described concavees lens.
2. display device according to claim 1 is characterized in that: the refractive index of described concavees lens equals the ordinary refraction index of the liquid crystal molecule of described first liquid crystal layer.
3. display device according to claim 1 is characterized in that: described control electrode is a strip, and its bearing of trend is consistent with described strip liquid crystal convex lens bearing of trend.
4. display device according to claim 3, it is characterized in that: this liquid crystal lens assembly cooperates linearly polarized photon to use, and described a plurality of strip liquid crystal convex lens extend along a first direction, and arrange along a second direction, this first direction is perpendicular to this second direction, and the polarization direction of described polarized light is perpendicular to first direction.
5. display device according to claim 4, it is characterized in that: described liquid crystal convex lens comprise that further one is arranged at the alignment film on surface of close described first liquid crystal layer of described transparency carrier, this alignment film makes the liquid crystal molecule of described first liquid crystal layer when being not applied to electric field, and optical axis is parallel to described first direction.
6. display device according to claim 5, it is characterized in that: the liquid crystal molecule of described first liquid crystal layer is that optical axis direction can be along being parallel to the positivity liquid crystal that direction of an electric field is arranged, the liquid crystal molecule of described first liquid crystal layer is when being applied in electric field, and optical axis and first direction are angled.
7. display device according to claim 1 is characterized in that: the extraordinary ray refractive index of the liquid crystal molecule of described first liquid crystal layer is greater than 1.2 times ordinary refraction index.
8. display device according to claim 1 is characterized in that: described concavees lens are a pair of refraction liquid crystal concavees lens, and it comprises one second liquid crystal layer, and this second liquid crystal layer comprises the liquid crystal molecule of a plurality of orientations perpendicular to described transparency carrier.
9. display device according to claim 1 is characterized in that: described concavees lens are a pair of refraction liquid crystal concavees lens, and it comprises one second liquid crystal layer, and this second liquid crystal layer comprises that a plurality of orientations are parallel to the liquid crystal molecule of described transparency carrier.
10. liquid crystal lens assembly, it comprises in regular turn from exiting surface to incidence surface:
The strip concavees lens of a plurality of adjacent arrangements;
The strip liquid crystal convex lens of a plurality of adjacent arrangements, its a pair of should described a plurality of concavees lens, described a plurality of strip liquid crystal convex lens comprise a transparency carrier, one is positioned at the electrode layer on this transparency carrier, and one first liquid crystal layer, this first liquid crystal layer is sandwiched between these concavees lens and the transparency carrier; It is characterized in that:
This electrode layer comprises a plurality of control electrodes, described a plurality of control electrode is used to control the orientation of liquid crystal molecule of described birefringence liquid crystal convex lens to adjust its equivalent refractive index, makes the equivalent refractive index of described liquid crystal convex lens be equal to, or greater than first refractive index of described concavees lens.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105124214A CN101968595B (en) | 2010-10-13 | 2010-10-13 | 2D/3D switching liquid crystal lens assembly and display device |
| PCT/CN2010/078755 WO2012048485A1 (en) | 2010-10-13 | 2010-11-15 | Two dimension/three dimension switchable liquid crystal lens assembly and display device |
| US12/996,998 US8582043B2 (en) | 2010-10-13 | 2010-11-15 | 2D/3D switchable LC lens unit for use in a display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105124214A CN101968595B (en) | 2010-10-13 | 2010-10-13 | 2D/3D switching liquid crystal lens assembly and display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101968595A true CN101968595A (en) | 2011-02-09 |
| CN101968595B CN101968595B (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105124214A Expired - Fee Related CN101968595B (en) | 2010-10-13 | 2010-10-13 | 2D/3D switching liquid crystal lens assembly and display device |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN101968595B (en) |
| WO (1) | WO2012048485A1 (en) |
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| CN101968595B (en) | 2013-12-25 |
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Denomination of invention: LCD Lens Module and Display Device with 2D/3D Switching Effective date of registration: 20190426 Granted publication date: 20131225 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Registration number: 2019440020032 |
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Date of cancellation: 20201016 Granted publication date: 20131225 Pledgee: Bank of Beijing Limited by Share Ltd. Shenzhen branch Pledgor: Shenzhen China Star Optoelectronics Technology Co.,Ltd. Registration number: 2019440020032 |
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Granted publication date: 20131225 |