CN104122718A - Liquid crystal lens and stereo display device - Google Patents
Liquid crystal lens and stereo display device Download PDFInfo
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- CN104122718A CN104122718A CN201410344728.6A CN201410344728A CN104122718A CN 104122718 A CN104122718 A CN 104122718A CN 201410344728 A CN201410344728 A CN 201410344728A CN 104122718 A CN104122718 A CN 104122718A
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Abstract
The invention belongs to the technical field of stereo display and provides a liquid crystal lens. The liquid crystal lens comprises a first substrate, a second substrate and liquid crystal molecules, wherein the first substrate and the second substrate are arranged oppositely, a plurality of first strip-shaped electrodes are arranged on the first substrate at intervals, a plurality of second strip-shaped electrodes parallel to the orientation of the first strip-shaped electrodes are arranged on the side, facing the first substrate, of the second substrate, and the two adjacent second strip-shaped electrodes are spaced by a certain distance. When the liquid crystal lens is used for 3D display, a plurality of liquid crystal lens units which are identical in structure and are distributed in an array mode are formed between the first substrate and the second substrate, each liquid crystal lens unit corresponds to one second strip-shaped electrode and at least two first strip-shaped electrodes, the width of the second strip-shaped electrodes is smaller than the distance of the liquid crystal lens units, and the central lines of the liquid crystal lens units and the central lines of the corresponding second strip-shaped electrodes are on the same straight lines. The invention further provides a stereo display device with the liquid crystal lens. Crosstalk can be obviously reduced, and the stereo display effect can be improved.
Description
Technical field
The invention belongs to stereo display technique field, relate in particular to liquid crystal lens and comprise the 3 d display device of this liquid crystal lens.
Background technology
In recent years, three-dimensional stereo display technique development rapidly, became the focus of people's research.Stereo display technique has important application in fields such as medical treatment, advertisement, military affairs, exhibition, game at present.Early stage stereo display technique is mainly watched stereoscopic picture plane by wearing anaglyph spectacles, and current main product is the naked-eye stereoscopic display device based on binocular parallax, naked-eye stereoscopic display device cardinal principle is that grating is set before display panel, the at least two width anaglyphs that grating shows display panel offer respectively beholder's images of left and right eyes, make beholder see 3D rendering.
The 3 d display device structural representation that Fig. 1 provides for prior art, 3 d display device comprises display panel 1 ＇ and liquid crystal lens 2 ＇, liquid crystal lens 2 ＇ are arranged at the bright dipping side of display panel 1 ＇, and the light that display panel 1 ＇ sends enters respectively beholder's left eye and right eye through liquid crystal lens 2 ＇ with directional light.Liquid crystal lens 2 ＇ comprise first substrate 21 ＇ and second substrate 22 ＇ that are oppositely arranged, and be located in the liquid crystal layer between first substrate 21 ＇ and second substrate 22 ＇, first substrate 21 ＇ are provided with multiple spaced the first strip electrode 23 ＇, and second substrate 22 ＇ are provided with the second electrode 24 ＇.By multiple the first strip electrode 23 ＇ and the second electrode 24 ＇ are applied to required separately voltage, between first substrate 21 ＇ and second substrate 22 ＇, produce electric field intensity electric field not etc., liquid crystal molecule 25 ＇ in electric field driven liquid crystal layer deflect.Due to electric field intensity not etc., therefore, the degree difference that electric field driven liquid crystal molecule 25 ＇ deflect, therefore, the voltage of controlling on multiple the first strip electrode 23 ＇ distributes, the refractive index of liquid crystal lens 2 ＇ will change accordingly, thereby the bright dipping of display panel 1 ＇ is controlled, and realizes stereo display.
When 3 d display device shows for 3D, be formed with the liquid crystal lens unit of array arrangement between first substrate 21 ＇ and second substrate 22 ＇, each liquid crystal lens unit has identical structure.Fig. 2 only illustrates the first adjacent liquid crystal lens unit L1 ＇ and the second liquid crystal lens unit L2 ＇, and the first liquid crystal lens unit L1 ＇ is to there being two the first strip electrode 23 ＇, and the second liquid crystal lens unit L2 ＇ is to there being two the first strip electrode 23 ＇.Known according to liquid crystal lens 2 ＇ image-forming principles, the first strip electrode 23 ＇ are applied to the first driving voltage, the second electrode 24 ＇ are applied to the second driving voltage, therefore, the electric field that forms electric field intensity maximums at the first strip electrode 23 ＇ places, liquid crystal molecule 25 ＇ that are positioned at the first strip electrode 23 ＇ places are vertical distribution under the driving of electric field, and along with away from the first strip electrode 23 ＇, a little less than electric field also becomes more and more, liquid crystal molecule 25 ＇ can tend to horizontally gradually.
Liquid crystal lens 2 ＇ shown in Fig. 2, wherein the second electrode 24 ＇ are face electrode, Fig. 3 is the comparison diagram that optical path difference distributes and desirable parabolic type lens light path difference distributes of the first liquid crystal lens unit L1 ＇ and the second liquid crystal lens unit L2 ＇, as can be seen from Figure 3, adjacent the first liquid crystal lens unit L1 ＇ and the second liquid crystal lens unit L2 ＇ edge share first strip electrode 23 ＇.In the time that 3 d display device shows for 3D, the electric field intensity of the first liquid crystal lens unit L1 ＇ and the second L2 ＇ junction, liquid crystal lens unit changes more violent, cause optical path difference herein to occur larger fluctuation, the optical path difference of liquid crystal lens 2 ＇ herein distributes and obviously departs from desirable parabolic type lens light path difference distribution, thereby has affected the imaging characteristic of this place's liquid crystal lens 2 ＇.Therefore, compared with the parabolic type lens of the light path at liquid crystal lens elementary boundary place and standard, have larger deviation.In the time that liquid crystal lens 2 ＇ are applied to 3D display technique, these deviations can increase crosstalking of 3 d display device, affect the image quality of stereo display.
As shown in Figure 4, prior art discloses a kind of liquid crystal lens and driving method thereof, 3 d display device, this liquid crystal lens 2 " comprise have same structure multiple liquid crystal lens unit (L1 as shown in the figure " with L2 "), each liquid crystal lens unit comprises the first substrate 21 " with second substrate 22 " being oppositely arranged, first substrate 21 " is provided with the first strip electrode 23 ", second substrate 22 " is provided with the second electrode 24 towards a side of first substrate ", the second electrode 24 " is provided with the second alignment film, between dielectric layer and the second alignment film, be provided with the second strip electrode 25 ", the second strip electrode 25 " is arranged at the relative dual-side of dielectric layer, and, the second electrode 24 is " as common electrode ground connection, the second strip electrode 25 " on all apply negative voltage.To the first strip electrode 23 ", the second electrode 24 " and the second strip electrode 25, " apply respectively different driving voltages, this liquid crystal lens is manufacturing process complexity not only, drives design loaded down with trivial details, and is industrially not easy to implement.
Summary of the invention
The object of the present invention is to provide liquid crystal lens and 3 d display device, be intended to solve the above-mentioned one or more technical matterss that caused by limitation and the shortcoming of prior art.
The present invention realizes like this, liquid crystal lens, comprise the first substrate and the second substrate that are oppositely arranged, and be located in the liquid crystal molecule between described first substrate and described second substrate, described first substrate is provided with multiple the first strip electrodes that are set in distance, described second substrate is provided with multiple second strip electrodes parallel with described the first bar shaped electrode spread direction towards a side of described first substrate, between equal between adjacent two described the second strip electrodes, be separated with certain distance, in the time that described liquid crystal lens shows for 3D, between described first substrate and described second substrate, form multiple structures identical and be the liquid crystal lens unit of array distribution, corresponding described second strip electrode in each described liquid crystal lens unit and at least two described the first strip electrodes, the width of described the second strip electrode is less than the spacing of described liquid crystal lens unit, and the center line of described liquid crystal lens unit with the center line of corresponding described the second strip electrode on same straight line.
Further, also comprise voltage control module, for controlling the second driving voltage on the first driving voltage, each described the second strip electrode putting on each described the first strip electrode, the electric potential difference between described the first driving voltage and described the second driving voltage is greater than the threshold voltage of described liquid crystal molecule.
Preferably, described electric potential difference is u
0, the threshold voltage of described liquid crystal molecule is v
th, and v
th≤ u
0≤ 4v
th.
Preferably, the spacing of described liquid crystal lens unit is L, and the width of described the second strip electrode is M, and
Further, each described liquid crystal lens unit is to there being two described the first strip electrodes, and the distance between adjacent two described the second strip electrodes is more than or equal to the width of described the first strip electrode.
Or further, each described liquid crystal lens unit is to there being multiple described the first strip electrodes, the distance between adjacent two described the second strip electrodes is more than or equal to the width of described the first strip electrode.
Further, also comprise the third electrode being arranged between described first substrate and described the first strip electrode, between described third electrode and described the first strip electrode, be provided with insulation course, each described the first strip electrode is arranged on described insulation course, and described voltage control module is also for controlling the 3rd driving voltage putting on described third electrode.
Further, described third electrode is face electrode.
Further, the cross sectional shape of described the second strip electrode is rectangle, arch or serrate.
When liquid crystal lens provided by the invention shows for 3D, between first substrate and second substrate, form the liquid crystal lens unit that multiple structures are identical, each liquid crystal lens unit is to there being second strip electrode, because the spacing of liquid crystal lens unit is greater than the width of the second strip electrode, and the center line of the center line of the second strip electrode and liquid crystal lens unit is on same straight line, when to first strip electrode the first driving voltage, because the gap forming between adjacent two the second strip electrodes is relative with the first strip electrode that is positioned at liquid crystal lens cell edges place, therefore weaken the electric field intensity at liquid crystal lens cell edges place, improve near the degree of deflection of the liquid crystal molecule of the first strip electrode, present more level and smooth state in the performance of phase-delay quantity, obviously reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit intersections, promote the effect of stereo display and the comfort level of watching.
Another object of the present invention also provides 3 d display device, comprises display panel, also comprises above-mentioned liquid crystal lens, and described liquid crystal lens is arranged at the bright dipping side of described display panel.
3 d display device provided by the invention, the light that liquid crystal lens unit sends display panel is adjusted, and to present stereo-picture, eliminates liquid crystal lens and produces the reason of crosstalking, and has improved stereo display effect and has watched comfort level.
Brief description of the drawings
Fig. 1 is the structural representation of the 3 d display device that provides of prior art;
Fig. 2 is the structural representation of the liquid crystal lens that provides of prior art;
Fig. 3 is that the optical path difference of the liquid crystal lens that provides of prior art distributes and desirable parabolic type lens light path difference distribution comparison diagram;
Fig. 4 is the another structural representation of the liquid crystal lens that provides of prior art;
Fig. 5 is the structural representation of the liquid crystal lens that provides of the embodiment of the present invention one;
Fig. 6 is the view of the liquid crystal lens that provides of the embodiment of the present invention one in the time that 3D shows
Fig. 7 is the optical path difference distribution schematic diagram of the liquid crystal lens that provides of the embodiment of the present invention one;
Fig. 8 is the structural representation of the liquid crystal lens that provides of the embodiment of the present invention two;
Fig. 9 is the optical path difference distribution schematic diagram of the liquid crystal lens that provides of the embodiment of the present invention two;
Figure 10 is the structural representation of the liquid crystal lens that provides of the embodiment of the present invention three.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Embodiment mono-
As shown in Fig. 5 and Fig. 6, the embodiment of the present invention provides a kind of liquid crystal lens 2, comprise the first substrate 21 and second substrate 22 that are oppositely arranged, between first substrate 21 and second substrate 22, be provided with liquid crystal molecule 23, first substrate 21 is provided with multiple the first strip electrodes 24, between adjacent two the first strip electrodes 24, is separated with certain distance between all.Second substrate 22 is provided with multiple the second strip electrodes 25 towards a side of first substrate 21, the orientation of the second strip electrode 25 is parallel to the orientation of the first strip electrode 24, and between equal between adjacent two the second strip electrodes 25, be separated with certain distance, second substrate 22 does not cover conductive material completely towards the one side of the first strip electrode 24.In the time that liquid crystal lens 2 shows for 3D, the first strip electrode 24 is applied to the first driving voltage, each the second strip electrode 25 is applied to the second driving voltage, electric potential difference between the first driving voltage and the second driving voltage is between first substrate 21 and second substrate 22, form the first electric field that electric field intensity does not wait, the first electric field driven liquid crystal molecule 23 deflects, form the liquid crystal lens unit L1 (L2) of gradually changed refractive index, liquid crystal lens unit L1 (L2) can be adjusted light, to present stereo-picture.
Second substrate 22 does not cover conductive material completely towards the one side of the first strip electrode 24, the electric field curve of liquid crystal lens unit L1 and liquid crystal lens unit L2 intersection, can draw close in the second strip electrode 25 with comparatively mild state, so just can be too fierce in the variation of the electric-force gradient of each liquid crystal lens unit L1 and L2 intersection, be conducive to suppress the light path fluctuation at this place, thereby while reducing stereo display, the crosstalk phenomenon that adjacent two liquid crystal lens unit L1 and L2 intersection occur, promotes display effect.
Each liquid crystal lens unit L1 (L2) is to having at least two the first strip electrodes 24 and second strip electrode 25, the width of the second strip electrode 25 is less than the spacing of liquid crystal lens unit L1 (L2), the spacing of liquid crystal lens unit L1 (L2) refers to distance between the center line of two first strip electrodes 24 that are positioned at liquid crystal lens unit L1 (L2) edge in the present embodiment, the center line of liquid crystal lens unit L1 (L2) with the center line of the second corresponding strip electrode 25 on same straight line, the second strip electrode 25 is arranged at the center of liquid crystal lens unit L1 (L2), guarantee that each liquid crystal lens unit L1 (L2) structure is identical.Relative owing to being positioned at gap between the first strip electrode 24 and adjacent two second strip electrodes 25 of liquid crystal lens unit L1 (L2) edge.Therefore, weaken the electric field intensity of liquid crystal lens unit L1 (L2) edge, improve near the degree of deflection of the first strip electrode 24 liquid crystal molecules 23, present more level and smooth state in the performance of phase-delay quantity, obviously reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit L1 and L2 intersection, promote the effect of stereo display and the comfort level of watching.Fundamentally eliminate liquid crystal lens 2 by technique scheme and produce the reason of crosstalking, improved stereo display effect and watched comfort level.Simultaneously, each the second strip electrode 25 is applied to the second driving voltage, guarantee to form between first substrate 21 and second substrate 22 electric field intensity electric field not etc., under the effect of electric field, liquid crystal molecule 23 deflects, and meets liquid crystal lens 2 and is applied to the demand that 3D shows.The liquid crystal lens 2 that the embodiment of the present invention provides, in the time showing for 3D, only need the first strip electrode 24 to apply the first driving voltage, the second strip electrode 25 is applied to the second driving voltage, make the liquid crystal lens unit L1 (L2) of the liquid crystal molecule 23 deflections formation gradually changed refractive indexes in liquid crystal lens 2, simple to operate, easy to implement.
As shown in Figure 7, the liquid crystal lens 2 that adopts the present embodiment to provide, owing to weakening the electric field intensity of liquid crystal lens unit L1 (L2) edge, improve near the degree of deflection of the first strip electrode 24 liquid crystal molecules 23, present more level and smooth state in the performance of phase-delay quantity, obviously reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit L1 and L2 intersection, promote the effect of stereo display and the comfort level of watching, the optical path difference of obviously having improved the boundary of adjacent two liquid crystal lens unit L1 and L2 distributes, optical path difference after optimization distributes and approaches with desirable para-curve, adopt the 3 d display device of liquid crystal lens 2 in the time that 3D shows, to produce crosstalk phenomenon thereby improve, improve stereo display effect and watched comfort level.
As shown in Figure 6, each liquid crystal lens unit L1 (L2) that the present embodiment provides is to there being two the first strip electrodes 24, distance between adjacent two the second strip electrodes 25 is more than or equal to the width of the first strip electrode 24, gap between adjacent two the second strip electrodes 25 is relative with the first strip electrode 24, weaken the electric field intensity of liquid crystal lens unit L1 (L2) edge, improve near the degree of deflection of the first strip electrode 24 liquid crystal molecules 23, present more level and smooth state in the performance of phase-delay quantity, reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit L1 and L2 intersection, promote the effect of stereo display and the comfort level of watching.
Particularly, set the spacing 256um of liquid crystal lens unit L1 (L2), use LCD MASTER software to carry out light path simulation, and utilize MATLAB to process gained simulated data.The ordinary light refractive index n of the liquid crystal molecule 23 that this simulated experiment is used
0be 1.524, very optical index n
ebe 1.824.The width of the thickness of liquid crystal lens 2 and the first strip electrode 24 is all set to 30um, and driving voltage, in the simulated experiment of the liquid crystal lens 2 that liquid crystal lens 2 ＇ (shown in Fig. 2) that these major parameters provide in prior art and the present embodiment provide, remain unchanged.Fig. 3 has shown the analog result of liquid crystal lens 2 ＇ that prior art provides, and in figure, curve is respectively the optical path difference distribution curve of liquid crystal lens 2 ＇ that prior art provides and the optical path difference distribution curve with standard parabolic type lens.Can find out, the intersection of adjacent two liquid crystal lens unit L1 ＇ and L2 ＇, larger with the deviation of the optical path difference distribution curve of standard parabolic type lens, these deviations can cause larger crosstalking in actual 3D watches.Fig. 7 has shown the analog result of the liquid crystal lens 2 that the present embodiment provides, and in the present embodiment, the width of the second strip electrode 25 is set to 156um.Can find out, two suite lines overlap relatively goodly, the intersection of liquid crystal lens unit L1 and L2, less with the deviation of the optical path difference distribution curve of standard parabolic type lens, the optical path difference distribution curve of liquid crystal lens 2 ＇ that provide with respect to prior art has greatly improved, the crosstalk phenomenon that has reduced the intersection appearance of liquid crystal lens unit L1 and L2, has improved stereo display effect and has watched comfort level.
As the further improvement of above-described embodiment, as shown in Figure 6, the liquid crystal lens 2 that the present embodiment provides also comprises voltage control module (not shown), voltage control module is for controlling the first driving voltage putting on each the first strip electrode 25, the second driving voltage on each the second strip electrode 25, the electric potential difference between the first driving voltage and the second driving voltage is greater than the threshold voltage of liquid crystal molecule 23.Electric potential difference produces the electric field that electric field intensity does not wait, under the effect of electric field, liquid crystal molecule 23 deflects with the variation of electric field intensity, make the refractive index distribution gradient of liquid crystal layer between first substrate 21 and second substrate 22, form and be liquid crystal lens unit L1 (L2) (not shown) that array arranges.Use voltage control module, can precisely control the size of the first driving voltage, the second driving voltage, make liquid crystal lens 2 in the time of stereo display, liquid crystal molecule 23 Electric Field Distribution is according to the rules arranged, and close to desirable parabolic distribution, the liquid crystal lens unit L1 (L2) that forms gradually changed refractive index, imaging effect is outstanding.
As the further improvement of above-described embodiment, as shown in Figure 6, the electric potential difference that the present embodiment provides is u0, and the threshold voltage of liquid crystal molecule 23 is v
th, and v
th≤ u
0≤ 4v
th.The magnitude of voltage size of the first driving voltage is relevant with the width of the first strip electrode 24, if the width of the first strip electrode 24 is larger, the magnitude of voltage of corresponding the first driving voltage should be less, similarly, if the width of the first strip electrode 24 is less, the magnitude of voltage of corresponding the first driving voltage should be larger, such processing is in order to meet the required voltage of liquid crystal lens 2 imagings, solved liquid crystal lens 2 in the time that 3D shows simultaneously, near the first strip electrode 24, because electric field intensity is larger, there is the problem of crosstalking in adjacent two liquid crystal lens unit L1 and L2 intersection.
As the further improvement of above-described embodiment, as shown in Figure 6, the spacing of the liquid crystal lens unit L1 (L2) that the present embodiment provides is L, and the width of the second strip electrode 25 is M, and
gap between adjacent two the second strip electrodes 25 is relative with the first strip electrode 24 that is positioned at liquid crystal lens unit L1 (L2) edge.Therefore weaken the electric field intensity of liquid crystal lens unit L1YuL2 edge, improve near the degree of deflection of the first strip electrode 24 liquid crystal molecules 23, present more level and smooth state in the performance of phase-delay quantity, reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit L1 and L2 intersection, promote the effect of stereo display and the comfort level of watching.Meanwhile, for ensureing that liquid crystal lens 2, in the time that 3D shows, can normally present stereo-picture, the distance between adjacent two the second strip electrodes 25 can not be excessive, affects the normal demonstration of liquid crystal lens 2.
As the further improvement of above-described embodiment, as shown in Fig. 5 and Fig. 6, the cross sectional shape of the second strip electrode 25 that the present embodiment provides is rectangle, arch or serrate, is convenient to make processing.Certainly; the cross sectional shape of the second strip electrode 25 can be also other rules or irregularly shaped; within all belonging to protection scope of the present invention; should be undoubted determine; the cross sectional shape of the second strip electrode 25 that the present embodiment provides; be only applicable to illustrate, the second strip electrode 25 of regular shape is more prone to processing.
As shown in Fig. 5 and Fig. 6, the present embodiment also provides a kind of 3 d display device, comprise display panel 1 and above-mentioned liquid crystal lens 2, liquid crystal lens 2 is arranged at the bright dipping side of display panel 1, in the time that liquid crystal lens 2 shows for 3D, the first strip electrode 24 is applied to the first driving voltage, the second strip electrode 25 is applied to the second equal driving voltage, electric potential difference between the first driving voltage and the second driving voltage forms electric field intensity the first electric field not etc. between first substrate 21 and second substrate 22, the first electric field driven liquid crystal molecule 23 deflects, form the liquid crystal lens unit L1 (L2) of gradually changed refractive index, the light that liquid crystal lens unit L1 (L2) sends display panel 1 is adjusted, to present stereo-picture.
Embodiment bis-
As shown in Figure 8, liquid crystal lens 2 structures that the liquid crystal lens 20 that the present embodiment provides provides with embodiment mono-are substantially identical, difference is, each liquid crystal lens unit L10 (L20) is to there being multiple the first strip electrodes 240, distance between adjacent two the second strip electrodes 250 is more than or equal to the width of the first strip electrode 240, for the liquid crystal lens 20 of this kind of structure, each the first strip electrode 240 that each liquid crystal lens unit L10 (L20) is corresponding applies the 4th symmetrical driving voltage, particularly, in liquid crystal lens unit L10, to each strip electrode as S11, S12, S13, S14, S15, S16 applies symmetrical voltage, V (S11)=V (S16) >V (S12)=V (S15) >V (S13)=V (S14) particularly, similarly, in liquid crystal lens unit L20, to each strip electrode as S16, S17, S18, S19, S20, S21 applies symmetrical voltage, V (S16)=V (S21) >V (S17)=V (S20) >V (S18)=V (S19) particularly, apply the 5th driving voltage with the second strip electrode 250 of its contraposition.The voltage maximum applying for first strip electrode 240 at two ends, liquid crystal lens unit L10 (L20), be positioned at the voltage minimum that first strip electrode 240 at center, liquid crystal lens unit L10 (L20) applies, voltage is presented the trend and the voltage that successively decrease and presents symmetrical to center by two ends.Can present so a kind of state of smooth transformation more at each liquid crystal lens unit L10 (L20) internal electric field.In liquid crystal lens unit L10 (L20), because voltage symmetry distributes, liquid crystal molecule 230 can refractive index present certain gradual change trend under the impact of level and smooth electric field, and therefore liquid crystal lens 20 can have good optical imagery character.By suitable voltage matches, the optical path difference of the liquid crystal lens unit L10 (L20) obtaining distributes can be more identical with the parabolic lens of standard.In actual process of watching, significantly reduce crosstalk phenomenon like this, reduce and watch the three-dimensional dizzy sensation because of parallax generation, the Shu Du that improves stereo display effect and watch.
As shown in Figure 9, the liquid crystal lens 20 that the present embodiment provides, because each liquid crystal lens unit L10 (L20) is to there being multiple the first strip electrodes 240, distance between adjacent two the second strip electrodes 250 is more than or equal to the width of the first strip electrode 240, gap between adjacent two the second strip electrodes 250 is relative with the first strip electrode 240, weaken the electric field intensity of liquid crystal lens unit L10 (L20) edge, improve near the degree of deflection of the first strip electrode 240 liquid crystal molecules 230, present more level and smooth state in the performance of phase-delay quantity, obviously reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit L10 and L20 intersection, promote the effect of stereo display and the comfort level of watching.By each the first strip electrode 240 being applied to the 4th symmetrical driving voltage, the second corresponding strip electrode 250 is applied to the 5th driving voltage, the optical path difference of obviously improving the boundary of adjacent two liquid crystal lens unit L10 and L20 distributes, optical path difference after optimization distributes and approaches with desirable para-curve, thereby improve the crosstalk phenomenon that adopts the 3 d display device of liquid crystal lens 20 to produce in the time that 3D shows, improved stereo display effect and watched comfort level.
As the further improvement of above-described embodiment, as shown in Figure 8, the voltage control module that the present embodiment provides is also for controlling the 4th driving voltage of each the first strip electrode 240, and second the 5th driving voltage on strip electrode 250, by the center of two edges place to the liquid crystal lens unit L10 (L20) of liquid crystal lens unit L10 (L20), the magnitude of voltage of each the 4th driving voltage from large to small, it is the magnitude of voltage maximum of the 4th driving voltage on two edges place the first strip electrode 240, reduce successively, electric potential difference between the 4th driving voltage and the 5th driving voltage produces electric field intensity the first electric field not etc., under the effect of electric field, liquid crystal molecule 230 deflects with the variation of electric field intensity, make the refractive index distribution gradient of liquid crystal layer between first substrate 210 and second substrate 220, formation is liquid crystal lens unit L10 (L20) (not shown) that array arranges, liquid crystal lens unit L10 (L20) is controlled the bright dipping of display panel, realize stereo display.
Embodiment tri-
As shown in figure 10, liquid crystal lens 20 structures that the liquid crystal lens 2C that the embodiment of the present invention provides and embodiment bis-provide are roughly the same, liquid crystal lens 2C comprises the first substrate 21C and the second substrate 22C that are oppositely arranged, second substrate 22C is arranged at the top of first substrate 21C, between first substrate 21C and second substrate 22C, be provided with liquid crystal molecule 23C and spacer 3C, second substrate 22C is provided with the second strip electrode 24C, and first substrate 21C is provided with the first strip electrode 25C.Difference is, between first substrate 21C and the first strip electrode 25C, is provided with third electrode 26C, between third electrode 26C and the first strip electrode 25C, is provided with insulation course 27C, and each the first strip electrode 25C is located on insulation course 27C.Liquid crystal lens 2C is in the time that 2D shows, voltage control module is also for controlling the 3rd driving voltage putting on third electrode 26C, the second driving voltage on the second strip electrode 24C, each driving voltage cooperatively interacts, drive liquid crystal molecule 23C to deflect, while guaranteeing that liquid crystal lens 2C shows for 3D, present the stereo-picture of standard.And because the second electrode 24C has adopted the formation of strip shaped electric poles, significantly reduce the crosstalk phenomenon of liquid crystal lens unit intersection, improved the quality of watching.The second electrode 24C is applied to the second driving voltage, third electrode 26C is applied to the 3rd driving voltage, electric potential difference between the second driving voltage and the 3rd driving voltage is greater than the threshold voltage of liquid crystal molecule 23C, between the second electrode 24C and third electrode 26C, can form the second electric field that electric field intensity equates like this, this second electric field deflects liquid crystal molecule 23C, refringence between liquid crystal molecule 23C and spacer 3C after deflection is in preset range, the condition that meets preset range is that the difference between refractive index and the liquid crystal molecule 23C refractive index of spacer 3C is less than 0.1, now, the refractive index of liquid crystal molecule 23C is close to the refractive index of spacer 3C.Therefore, when light process liquid crystal molecule 23C and spacer 3C, the refraction that can not produce light, liquid crystal lens 2C can eliminate spacer 3C bright spot phenomenon.
As the preferred implementation of above-described embodiment, third electrode 26C is face electrode, and third electrode 26C is simple in structure, and the 3rd stable driving voltage can be provided.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. liquid crystal lens, comprise the first substrate and the second substrate that are oppositely arranged, and be located in the liquid crystal molecule between described first substrate and described second substrate, described first substrate is provided with multiple the first strip electrodes that are set in distance, it is characterized in that: described second substrate is provided with multiple second strip electrodes parallel with described the first bar shaped electrode spread direction towards a side of described first substrate, between equal between adjacent two described the second strip electrodes, be separated with certain distance, in the time that described liquid crystal lens shows for 3D, between described first substrate and described second substrate, form multiple structures identical and be the liquid crystal lens unit of array distribution, corresponding described second strip electrode in each described liquid crystal lens unit and at least two described the first strip electrodes, the width of described the second strip electrode is less than the spacing of described liquid crystal lens unit, and the center line of described liquid crystal lens unit with the center line of corresponding described the second strip electrode on same straight line.
2. liquid crystal lens as claimed in claim 1, it is characterized in that, also comprise voltage control module, for controlling the second driving voltage on the first driving voltage, each described the second strip electrode putting on each described the first strip electrode, the electric potential difference between described the first driving voltage and described the second driving voltage is greater than the threshold voltage of described liquid crystal molecule.
3. liquid crystal lens as claimed in claim 2, is characterized in that, described electric potential difference is u0, and the threshold voltage of described liquid crystal molecule is v
th, and v
th≤ u
0≤ 4v
th.
4. liquid crystal lens as claimed in claim 1, is characterized in that: the spacing of described liquid crystal lens unit is L, and the width of described the second strip electrode is M, and
5. the liquid crystal lens as described in any one in claim 1 to 4, it is characterized in that: each described liquid crystal lens unit is to there being two described the first strip electrodes, and the distance between adjacent two described the second strip electrodes is more than or equal to the width of described the first strip electrode.
6. the liquid crystal lens as described in any one in claim 2 to 4, it is characterized in that: each described liquid crystal lens unit is to there being multiple described the first strip electrodes, and the distance between adjacent two described the second strip electrodes is more than or equal to the width of described the first strip electrode.
7. liquid crystal lens as claimed in claim 6, it is characterized in that, also comprise the third electrode being arranged between described first substrate and described the first strip electrode, between described third electrode and described the first strip electrode, be provided with insulation course, each described the first strip electrode is arranged on described insulation course, and described voltage control module is also for controlling the 3rd driving voltage putting on described third electrode.
8. liquid crystal lens as claimed in claim 7, is characterized in that, described third electrode is face electrode.
9. the liquid crystal lens as described in any one in claim 1 to 4, is characterized in that, the cross sectional shape of described the second strip electrode is rectangle, arch or serrate.
10. 3 d display device, comprises display panel, it is characterized in that, also comprises the liquid crystal lens described in any one in claim 1 to 9, and described liquid crystal lens is arranged at the bright dipping side of described display panel.
Priority Applications (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410344728.6A CN104122718A (en) | 2014-07-18 | 2014-07-18 | Liquid crystal lens and stereo display device |
| CN201520275905.XU CN204667023U (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| CN201510218967.1A CN106200203A (en) | 2014-07-18 | 2015-04-30 | Touch liquid crystal lens and 3 d display device |
| CN201510217325.XA CN106200202A (en) | 2014-07-18 | 2015-04-30 | Touch liquid crystal lens and 3 d display device |
| CN201510218953.XA CN106200143A (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| CN201510217311.8A CN106200142B (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| TW104123192A TWI575255B (en) | 2014-07-18 | 2015-07-16 | Liquid crystal lens and stereoscopic display |
| PCT/CN2015/084305 WO2016008445A1 (en) | 2014-07-18 | 2015-07-17 | Liquid crystal lens and stereographic display device |
| US14/392,349 US20160291333A1 (en) | 2014-07-18 | 2015-07-17 | Liquid Crystal Lens and Three-Dimensional Display Device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410344728.6A CN104122718A (en) | 2014-07-18 | 2014-07-18 | Liquid crystal lens and stereo display device |
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| CN104122718A true CN104122718A (en) | 2014-10-29 |
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| CN201510218953.XA Pending CN106200143A (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| CN201510218967.1A Pending CN106200203A (en) | 2014-07-18 | 2015-04-30 | Touch liquid crystal lens and 3 d display device |
| CN201510217325.XA Pending CN106200202A (en) | 2014-07-18 | 2015-04-30 | Touch liquid crystal lens and 3 d display device |
| CN201510217311.8A Active CN106200142B (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| CN201520275905.XU Active CN204667023U (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
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| CN201510218953.XA Pending CN106200143A (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| CN201510218967.1A Pending CN106200203A (en) | 2014-07-18 | 2015-04-30 | Touch liquid crystal lens and 3 d display device |
| CN201510217325.XA Pending CN106200202A (en) | 2014-07-18 | 2015-04-30 | Touch liquid crystal lens and 3 d display device |
| CN201510217311.8A Active CN106200142B (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
| CN201520275905.XU Active CN204667023U (en) | 2014-07-18 | 2015-04-30 | Liquid crystal lens and 3 d display device |
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- 2015-04-30 CN CN201510218967.1A patent/CN106200203A/en active Pending
- 2015-04-30 CN CN201510217325.XA patent/CN106200202A/en active Pending
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Also Published As
| Publication number | Publication date |
|---|---|
| CN106200143A (en) | 2016-12-07 |
| CN106200142A (en) | 2016-12-07 |
| CN204667023U (en) | 2015-09-23 |
| CN106200142B (en) | 2018-03-30 |
| CN106200202A (en) | 2016-12-07 |
| CN106200203A (en) | 2016-12-07 |
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Inventor after: Chen Zhaoyu Inventor after: Wang Honglei Inventor after: Gong Xiaoda Inventor before: Chen Zhaoyu Inventor before: Wang Honglei |
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