CN204422876U - 3 d display device - Google Patents
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- CN204422876U CN204422876U CN201420832564.7U CN201420832564U CN204422876U CN 204422876 U CN204422876 U CN 204422876U CN 201420832564 U CN201420832564 U CN 201420832564U CN 204422876 U CN204422876 U CN 204422876U
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Abstract
The utility model is applicable to stereo display technique field, provide 3 d display device, this 3 d display device comprises liquid crystal lens and display panel, display panel comprises the M × N number of display unit be arranged in array, liquid crystal lens comprises multiple first electrode, each first electrode is intervally installed, the bearing of trend of the first electrode is different from the arragement direction of display unit, when liquid crystal lens is used for 3D display, liquid crystal lens unit is formed between first substrate and second substrate, each liquid crystal lens unit is to n first electrode that should have arrangement continuously, n >=4, the first driving voltage that each first electrode pair is answered is symmetrical arranged with the center line of liquid crystal lens unit, and successively decreased gradually to center by the border of liquid crystal lens unit.Improve the degree of deflection of the first ate electrode liquid crystal molecule, more level and smooth state is presented in the performance of phase-delay quantity, reduce the difference of adjacent two liquid crystal lens unit intersections, weaken the larger crosstalk brought herein, promote the effect of stereo display and the comfort level of viewing.
Description
Technical field
The invention belongs to stereo display technique field, particularly relate to 3 d display device.
Background technology
In recent years, three-dimensional stereo display technique development rapidly, became the focus of people's research.Current stereo display technique has important application in fields such as medical treatment, advertisement, military affairs, exhibition, game.Early stage stereo display technique watches stereoscopic picture plane mainly through wearing stereoscopic glasses, and current main product is the naked-eye stereoscopic display device based on binocular parallax, naked-eye stereoscopic display device cardinal principle arranges grating before display panel, the at least two width anaglyphs that display panel shows by grating are supplied to the images of left and right eyes of beholder respectively, 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 ＇ is arranged at the light emission side of display panel 1 ＇, and the light that display panel 1 ＇ sends enters left eye and the right eye of beholder through liquid crystal lens 2 ＇ respectively with directional light.Liquid crystal lens 2 ＇ comprises first substrate 21 ＇ and second substrate 22 ＇ that are oppositely arranged, and the liquid crystal layer be located between first substrate 21 ＇ and second substrate 22 ＇, first substrate 21 ＇ is provided with multiple spaced first electrode 23 ＇, second substrate 22 ＇ and is provided with the second electrode 24 ＇.By applying voltage required separately to multiple first electrode 23 ＇ and the second electrode 24 ＇, produce electric field intensity electric field not etc. between first substrate 21 ＇ and second substrate 22 ＇, liquid crystal molecule 25 ＇ in electric field driven liquid crystal layer deflects.Due to electric field intensity not etc., therefore, the degree that electric field driven liquid crystal molecule 25 ＇ deflects is different, therefore, control the voltage's distribiuting on multiple first electrode 23 ＇, the refractive index of liquid crystal lens 2 ＇ will change accordingly, thus the bright dipping of display panel 1 ＇ is controlled, realize stereo display.
When 3 d display device is used for 3D display, 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 electrode 23 ＇, and the second liquid crystal lens unit L2 ＇ is to there being two the first electrode 23 ＇.According to liquid crystal lens 2 ＇ image-forming principle, driving voltage is applied to the first electrode 23 ＇, second driving voltage is applied to the second electrode 24 ＇, therefore, form the maximum electric field of electric field intensity at the first electrode 23 ＇ place, liquid crystal molecule 25 ＇ being positioned at the first electrode 23 ＇ place is vertical distribution under the driving of electric field, and along with away from the first electrode 23 ＇, electric field also becomes more and more weak, and namely liquid crystal molecule 25 ＇ can tend to horizontally gradually.
Liquid crystal lens 2 ＇ shown in Fig. 2, wherein the second electrode 24 ＇ is face electrode, Fig. 3 is the comparison diagram that the optical path difference of the first liquid crystal lens unit L1 ＇ and the second liquid crystal lens unit L2 ＇ distributes and desirable parabolic type lens light path difference distributes, as can be seen from Figure 3, adjacent first liquid crystal lens unit L1 ＇ and the second liquid crystal lens unit L2 ＇ edge share first electrode 23 ＇.When 3 d display device is used for 3D display, the both sides electric-field intensity distribution of the first liquid crystal lens unit L1 ＇ and the second liquid crystal lens unit L2 ＇ junction is unbalanced, there is larger fluctuation in the optical path difference that result in herein, the optical path difference distribution of liquid crystal lens 2 ＇ herein obviously departs from the distribution of desirable parabolic type lens light path difference, cause the difference of lens herein comparatively large, thus have impact on the imaging characteristic of this place's liquid crystal lens 2 ＇.Therefore, the light path distribution at liquid crystal lens elementary boundary place has larger deviation compared with the parabolic type lens of standard.When liquid crystal lens 2 ＇ is applied to 3D display technique, these deviations can increase the crosstalk of 3 d display device, affect stereos copic viewing comfort level.
Summary of the invention
The object of the embodiment of the present invention is to provide a kind of 3 d display device, is intended to solve the lens intersection larger difference of generation caused because electric-field intensity distribution is unbalanced and then the problem affecting viewing effect.
The embodiment of the present invention realizes like this, 3 d display device, comprise liquid crystal lens and display panel, described liquid crystal lens is arranged at the light emission side of described display panel, described display panel comprises the M × N number of display unit be arranged in array, a described M display unit is arranged along first direction, described N number of display unit is arranged along second direction, described first direction is perpendicular to described second direction, described liquid crystal lens comprises the first substrate and second substrate that are oppositely arranged, described second substrate is provided with the second electrode, described first substrate is provided with multiple first electrode, each described first electrode is intervally installed, and extend along third direction, described third direction is different from described first direction, described second direction, when described liquid crystal lens is used for 3D display, identical and the liquid crystal lens unit be arranged in array of multiple structure is formed between described first substrate with described second substrate, each described liquid crystal lens unit is to n described first electrode that should have arrangement continuously, n >=4, the first driving voltage that each described first electrode pair is answered is symmetrical arranged with the center line of described liquid crystal lens unit, and successively decreased gradually to center by the border of described liquid crystal lens unit.
Particularly, described display unit comprises multiple display subelement, and the width of described first electrode is not more than the width of described display subelement, and the distance of adjacent two described first electrodes is not more than the width of described display subelement.
Preferably, the distance between adjacent two described first electrodes is l, and the spacing of described liquid crystal lens unit is p, then l≤kp, wherein 0 < k≤0.1.
Preferably, the width being positioned at described first electrode at described liquid crystal lens elementary boundary place is b, and 10 μm≤b≤30 μm.
Further, described second electrode is strip electrode.
Or further, described second electrode is face electrode.
Further, also comprise voltage control device, described voltage control device controls the driving voltage put on each described first electrode and is symmetrical arranged with the center line of described liquid crystal lens unit, and the magnitude of voltage of each described first driving voltage is successively decreased to center gradually by the border of described liquid crystal lens unit.
Preferably, described first driving voltage that described first electrode pair being positioned at described liquid crystal lens elementary boundary place is answered is u
0, the threshold voltage of described liquid crystal lens is v
th, u
0>=v
th.
Preferably, described first direction is horizontal direction, and described third direction and described first direction are formed with angle, and described angle is α, and α=70 ° ± 10 °.
Preferably, the cross sectional shape of described first electrode is rectangle, arch or serrate.
3 d display device provided by the invention, liquid crystal lens is when 3D shows, the liquid crystal lens unit that multiple structure is identical is formed between first substrate with second substrate, corresponding multiple first electrode of each liquid crystal lens unit, each first electrode pair answers the first driving voltage to be symmetrical arranged with the center line of liquid crystal lens unit, and successively decreased gradually to center by the border of liquid crystal lens unit, weaken the electric field intensity at liquid crystal lens cell edges place, improve the degree of deflection of the first ate electrode liquid crystal molecule, more level and smooth state is presented in the performance of phase-delay quantity, significantly reduce the crosstalk phenomenon of adjacent two liquid crystal lens unit intersections, promote the effect of stereo display and the comfort level of viewing.
Accompanying drawing explanation
Fig. 1 is the structural representation of the 3 d display device that prior art provides;
Fig. 2 is the structural representation of the liquid crystal lens that prior art provides;
Fig. 3 is that the optical path difference distribution of the liquid crystal lens that prior art provides to distribute comparison diagram with desirable parabolic type lens light path difference;
Fig. 4 is the structural representation of the 3 d display device that the embodiment of the present invention provides;
Fig. 5 is the structural representation of the display panel that the embodiment of the present invention provides;
Fig. 6 is the structural representation of the display unit that the embodiment of the present invention provides;
Fig. 7 is that the display panel that provides of the embodiment of the present invention one and the first electrode are with the use of schematic diagram;
Fig. 8 is that the display panel that provides of the embodiment of the present invention one and the first electrode are with the use of schematic diagram;
Fig. 9 is the contrast schematic diagram of the light path curve of the light path curve of the multiple electrode structure liquid crystal lens unit that provides of the embodiment of the present invention one when applying voltage and nomianl para-curve physical lens;
The contrast schematic diagram of light path curve when Figure 10 is bipolar electrode structure liquid crystal lens unit applying voltage and the light path curve of nomianl para-curve physical lens;
Figure 11 is that the display panel that provides of the embodiment of the present invention two and the first electrode are with the use of schematic diagram;
Figure 12 is that the display panel that provides of the embodiment of the present invention three and the first electrode are with the use of schematic diagram.
Embodiment
In order to make the technical problem to be solved in the present invention, technical scheme and beneficial effect clearly understand, 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, be not intended to limit the present invention.
As shown in figs. 4 and 5,3 d display device 10 provided by the invention, comprises display panel 1 and liquid crystal lens 2.Liquid crystal lens 2 is arranged at the light emission side of display panel 1, certainly, after liquid crystal lens 2 can also be arranged on display panel 1.Display panel 1 comprises M × N number of display unit 11, M the display units 11 be arranged in array and arranges along first direction, and N number of display unit 11 is along second direction arrangement, and first direction is perpendicular to second direction.Liquid crystal lens 2 comprises the first substrate 21 and second substrate 22 that are oppositely arranged, and second substrate 22 is provided with the second electrode 25 towards the side of first substrate 21.Liquid crystal molecule 23 is provided with between first substrate 21 and second substrate 22, first substrate 21 is provided with multiple first electrode 24, be separated with certain distance between equal between adjacent two the first electrodes 24, the bearing of trend of the first electrode 24 is third direction, and third direction is different from first direction, second direction.Be appreciated that and be, in plane coordinate system, third direction is not parallel first direction both, is also not parallel to second direction, and namely the bearing of trend of the first electrode 24 is different from the arragement direction of display unit 11, is inclined to set.When liquid crystal lens 2 shows for 3D, first driving voltage is applied to the first electrode 24, second driving voltage is applied to the second electrode 25, electric potential difference between first driving voltage and the second driving voltage is between first substrate 21 and second substrate 22, form the electric field that electric field intensity does not wait, electric field driven liquid crystal molecule 23 deflects, form the identical and liquid crystal lens unit L1 (L2) of array arrangement of structure, liquid crystal lens unit L1 (L2) has the refractive index of gradual change, therefore, liquid crystal lens unit L1 (L2) can adjust the light that display panel 1 sends, present stereo-picture.
Each liquid crystal lens unit L1 (L2) is to n first electrode 24 that should have arrangement continuously, n is natural number, and n >=4, the first driving voltage that each first electrode 24 applies is symmetrical arranged with the center line of liquid crystal lens unit L1 (L2), and, the first driving voltage being positioned at the first electrode 24 correspondence of liquid crystal lens unit L1 (L2) boundary is maximum, successively decreased gradually by border to the center of liquid crystal lens unit L1 (L2) of liquid crystal lens unit L1 (L2), guarantee the liquid crystal lens unit L1 (L2) forming graded index.Liquid crystal lens unit L1 (L2) provided by the invention is to there being multiple first electrode 24, realize revising the electric field intensity everywhere of liquid crystal lens unit L1 (L2), liquid crystal molecule 23 is everywhere made to deflect proper angle, guarantee the light path curve of liquid crystal lens 2 and the light path Curve Matching of standard physical lens, more level and smooth state is presented in the performance of phase-delay quantity, significantly reduce the larger difference phenomenon of adjacent two liquid crystal lens unit L1 (L2) intersections, promote the effect of stereo display and the comfort level of viewing.Because display unit 11 is arranged in array, the first electrode 24 is inclined to set, and the periodicity that elimination produced because of the arrangement cycle of the first electrode 24 and the arrangement cycle of display unit 11 is interfered, and namely eliminates moire fringes Producing reason.Simultaneously because multiple electrode structure is revised electric field intensity, liquid crystal molecule 23 is everywhere made to deflect proper angle, guarantee the light path curve of liquid crystal lens 2 and the light path Curve Matching of standard physical lens, present more level and smooth state in the performance of phase-delay quantity, reduce so again the generation of moire fringes further.
As shown in Figure 4, each first strip electrode 24 of each liquid crystal lens unit L1 (L2) correspondence applies the first symmetrical driving voltage, particularly, in liquid crystal lens unit L1, to each first electrode 25 as S11, S12, S13, S14, S15, S16 applies symmetrical voltage, V (S11) particularly=V (S16) >V (S12)=V (S15) >V (S13)=V (S14), similarly, in liquid crystal lens unit L2, to each strip electrode as S16, S17, S18, S19, S20, S21 applies symmetrical voltage, V (S16) particularly=V (S21) >V (S17)=V (S20) >V (S18)=V (S19), second driving voltage is applied to the second electrode 25.The voltage applied for first strip electrode 24 at liquid crystal lens unit L1 (L2) two ends is maximum, the voltage that the first strip electrode 24 being positioned at liquid crystal lens unit L1 (L2) center applies is minimum, and voltage to present the trend of successively decreasing to center by two ends and voltage presents symmetrical.A kind of state of smooth transformation more can be presented like this at each liquid crystal lens unit L1 (L2) internal electric field.Due to voltage symmetry distribution in liquid crystal lens unit L1 (L2), liquid crystal molecule 23 refractive index can present certain gradual change trend under the impact of level and smooth electric field, and therefore liquid crystal lens 2 can have good optical imagery character.By suitable voltage matches, the optical path difference distribution of the liquid crystal lens unit L1 (L2) obtained can be more identical with the parabolic lens of standard.Its difference is weakened significantly.Like this in the process of reality viewing, because weaken its crosstalk and the moire fringes phenomenon of difference have and well weaken, reduce the three-dimensional dizzy sensation produced because of parallax of viewing, improve the Shu Du of stereo display effect and viewing.
The 3 d display device 10 that the invention process provides, when 3D shows, electric field between multiple first electrode 24 and the second electrode 25 forms liquid crystal lens unit L1 (L2), multiple first electrode 24 is set, and symmetrical first driving voltage is applied to each first electrode 24, and the first driving voltage increased gradually to edge from the center of each liquid crystal lens unit L1 (L2) is applied to multiple first electrode 24, realize the degree of deflection accurately controlling liquid crystal molecule 23 near the first electrode 24, make the light path curve of liquid crystal lens 2 and the light path Curve Matching of standard physical lens, more level and smooth state is presented in the performance of phase-delay quantity, significantly 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 viewing, improve the larger phenomenon of difference of the intersection of adjacent two liquid crystal lens unit L1 and L2, optical path difference distribution after optimization is close with ideal parabolic, thus improve the crosstalk phenomenon adopting the 3 d display device 10 of liquid crystal lens 2 to produce when 3D shows, improve stereo display effect and viewing comfort level.
As shown in Figure 4, optical path difference distribution overlaps relatively good with ideal parabolic, 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 ＇ provided relative to prior art has greatly improved, the disturbing phenomenon that the intersection reducing liquid crystal lens unit L1 and liquid crystal lens unit L2 occurs, improves stereo display effect and viewing comfort level.
As shown in figs. 5 and 6, display unit 11 comprises multiple display subelement 111, and display subelement 111 can be the sub-pixel in display panel 1, also can be understood as the display subregion in display panel 1.For guaranteeing that suitable deflection angle occurs the liquid crystal molecule 23 near the first electrode 24, therefore, the width setting the first electrode 24 is not more than the width of display subelement 111, namely the width of the first electrode 24 is less than or equal to the width of display subelement 111, the distance of adjacent two the first electrodes 24 is not more than the width of display subelement 111, and namely the distance of adjacent two the first electrodes 24 is less than or equal to the width of display subelement 111.Will be understood that, the invention provides at least one first electrode 24 and cover a display subelement 111, thus realize exactly control liquid crystal molecule 23 deflect, make the light path curve of liquid crystal lens 2 and the light path Curve Matching of standard physical lens, like this would not be too fierce in the change of the electric-force gradient of liquid crystal lens unit L1 and liquid crystal lens unit L2 intersection, be conducive to suppressing the light path at this place to fluctuate, that reduces that adjacent two liquid crystal lens unit L1 occur with liquid crystal lens unit L2 intersection differs larger phenomenon, promotes display effect.Make the light path curve of liquid crystal lens 2 and the light path Curve Matching of standard physical lens simultaneously, weaken crosstalk further, improve the comfort level of viewing.
Due to different display panels 1, the shape of display subelement 111 is different, and the shape of display subelement 111 can be the square of rule, trapezoidal, or other are irregularly shaped etc.; And due to the arrangement mode of the display subelement 111 of different display panel 1 correspondences different, at least comprise regularly arranged and irregular alignment etc., like this, namely the concrete size at the inclination angle of the first electrode 24 and vergence direction are determined according to the shape, arrangement mode etc. of the display subelement 111 of display panel 1.
As shown in Fig. 4 and Fig. 6, the distance between adjacent two the first electrodes 24 is l, and the spacing of liquid crystal lens unit L1 (L2) is p, then l≤kp, wherein 0 < k≤0.1.For resolution higher (>=2K) or size comparatively giant-screen, as being greater than the screen of 20 inches, the width dimensions of the display subelement 111 of this kind of screen is larger, if be only less than the width of display subelement 111 according to the distance between adjacent two the first electrodes 24, cause the deflection angle that still cannot realize accurately controlling liquid crystal molecule 23, then the problem that disturbance appears in liquid crystal lens unit L1 (L2) border cannot be solved, therefore, the Curve guide impeller of the first electrode 24 that the present embodiment provides, distance l≤kp between adjacent two the first electrodes 24, it is tightr that first electrode 24 designs, display sub-pixel 111 at least one first electrode 24 corresponding, first electrode 24 accurately can control the deflection angle of liquid crystal molecule 23, thus guarantee, the light path curve of liquid crystal lens unit L1 (L2) more presses close to nomianl para-curve, the light path at this place is suppressed to fluctuate, reduce the crosstalk phenomenon that adjacent two liquid crystal lens unit L1 and L2 intersection occur, promote display effect.And the invention provides the design standards of the first electrode 24, simplify the production technology of liquid crystal lens 2.The spacing p of liquid crystal lens unit L1 (L2) refers to the spacing of the center line of two the first electrodes 24 being positioned at liquid crystal lens unit L1 (L2) edge in the present embodiment.
As shown in Figure 4, the width being positioned at the first electrode 24 of liquid crystal lens unit L1 (L2) boundary is b, and 10 μm≤b≤30 μm.Because adjacent liquid crystal lens unit L1 and liquid crystal lens unit L2 is at intersection, share first electrode 24, therefore, uncontrolled in the deflection of the liquid crystal molecule 23 of intersection, the light path curve causing liquid crystal lens unit L1 (L2) to be formed is violent in intersection shake, affect the viewing of 3 d display device 10, therefore, the width of the first electrode 24 of design liquid crystal lens unit L1 (L2) boundary, in addition, the width of the electric potential difference between the first electrode 24 with the second electrode 25 and the first electrode 24 is relevant, if Article 1 the width of electrode 24 is larger, then the magnitude of voltage of corresponding first driving voltage should be less, similarly, if the width of the first electrode 24 is less, then the magnitude of voltage of corresponding first driving voltage should be larger, the first electrode 24 that design width is less, the first driving voltage applied is just larger, thus guarantee that whole liquid crystal molecules 23 of boundary deflect, the para-curve thus the light path curve formed is near the mark, the electric field unusual fluctuations of adjacent lcd lens unit L1 and liquid crystal lens unit L2 at intersection can be weakened, reduce lens aberration, improve stereos copic viewing comfort level.
In the present embodiment, second electrode 25 can be strip electrode, corresponding second electrode 25 of liquid crystal lens unit L1 (L2), the width of the second electrode 25 is less than the spacing of liquid crystal lens unit L1 (L2), namely space is provided with between adjacent two the second electrodes 25, the center line of liquid crystal lens unit L1 (L2) and the center line of the second corresponding electrode 25 are on the same line, namely the second electrode 25 is arranged at the center of liquid crystal lens unit L1 (L2), guarantees that each liquid crystal lens unit L1 (L2) structure is identical.Each liquid crystal lens unit L1 (L2) that the present embodiment provides is to there being multiple first electrode 24, distance between adjacent two the second electrodes 25 is more than or equal to the width of the first electrode 24 being positioned at liquid crystal lens unit L1 (L2) boundary, gap between adjacent two the second electrodes 25 is relative with the first electrode 24, weaken the electric field intensity of liquid crystal lens unit L1 (L2) edge, improve the degree of deflection of liquid crystal molecule 23 near the first electrode 24, more level and smooth state is presented 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 viewing.
Certainly, the width of corresponding second electrode 25, second electrode 25 of multiple liquid crystal lens unit L1 (L2) is greater than the spacing of liquid crystal lens unit L1 (L2), is convenient to the design of the second electrode 25.
As shown in Figure 4, the second electrode 25 is face electrode, applies the second driving voltage to the second electrode 25.Electric potential difference between first driving voltage and the second driving voltage, electric field is produced between first substrate 21 and second substrate 22, electric field driven liquid crystal molecule 23 deflects, to form the liquid crystal lens unit L1 (L2) with gradient refractive index rate variance, because the second electrode 25 is face electrode, apply voltage-operated convenience.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 viewing.By applying the first symmetrical driving voltage to each first strip electrode 24, second driving voltage is applied to the second corresponding electrode 25, the optical path difference distribution of the boundary of adjacent two liquid crystal lens unit L1 and the L2 of obvious improvement, optical path difference distribution after optimization is close with ideal parabolic, thus improve the crosstalk phenomenon adopting the 3 d display device of liquid crystal lens 2 to produce when 3D shows, improve stereo display effect and viewing comfort level.
As shown in Figure 4, the present invention also comprises voltage control device (not shown), voltage control device controls the first driving voltage put on each first electrode 24 and is symmetrical arranged with the center line of liquid crystal lens unit L1 (L2), and the magnitude of voltage of each the first driving voltage is successively decreased to center gradually by the border of liquid crystal lens unit L1 (L2), the magnitude of voltage of the first driving voltage on liquid crystal lens unit L1 (L2) boundary first strip electrode 24 is maximum, the first driving voltage being positioned at liquid crystal lens unit L1 (L2) center is minimum, close to 0 voltage.Electric potential difference between first driving voltage and the second driving voltage produces electric field intensity electric field not etc., under the effect of electric field, liquid crystal molecule 23 deflects with the change of electric field intensity, make the refractive index distribution gradient of liquid crystal layer between first substrate 21 and second substrate 22, form the liquid crystal lens unit L1 (L2) arranged in array, liquid crystal lens unit L1 (L2) bright dipping to display panel controls, and realizes stereo display.
As shown in Figure 4, the first driving voltage being positioned at liquid crystal lens unit L1 and liquid crystal lens unit L2 boundary is u
0, the threshold voltage of liquid crystal lens 2 is v
th, u
0>=v
th, because the magnitude of voltage size of intersection first driving voltage of liquid crystal lens unit L1 and L2 is relevant with the width of the first electrode 24, if Article 1 the width of electrode 24 is larger, then the magnitude of voltage of corresponding first driving voltage should be less, similarly, if the width of the first electrode 24 is less, then the magnitude of voltage of corresponding first driving voltage should be larger, such process is the voltage in order to meet needed for liquid crystal lens 2 imaging, solve liquid crystal lens 2 when 3D shows simultaneously, because electric field intensity is larger near first electrode 24, there is the problem of crosstalk in adjacent two liquid crystal lens unit L1 and L2 intersection.
As shown in Fig. 4 and Fig. 7, first direction is horizontal direction, third direction and first direction are formed with angle, angle is α, and α=70 ° ± 10 °, the angle namely between the bearing of trend of the first electrode 24 and horizontal direction is 60 °≤α≤80 °, with this understanding, the arrangement cycle of the first electrode 24 differs from the arrangement cycle of display unit 11, avoids producing moire fringes.And the spectrophotometric result of liquid crystal lens 2 pairs of display panels 1 is good, there will not be crosstalk phenomenon.
As shown in Figure 4, the cross sectional shape of the first electrode 24 provided by the invention is rectangle, arch or serrate, is convenient to make processing.Certainly; the cross sectional shape of the first electrode 24 also can be other rules or irregularly shaped; all belong within protection scope of the present invention; determination that should be undoubted; the cross sectional shape of the first strip electrode 24 that the present embodiment provides; be only applicable to illustrate, the first strip electrode 24 of regular shape is more prone to processing.
Below by way of multiple specific embodiment, the present invention will be further described.
Embodiment 1:
As shown in Fig. 4 and Fig. 7, display panel 1 is one piece 5.5 inches, the liquid crystal panel of 720p (as 1280 × 720).Be tilted to the left α=75 °, first electrode 24 relative level direction are placed, and width and the spacing of its liquid crystal lens unit equal 0.256mm, and the box of liquid crystal lens 2 thick be 0.030mm, the ordinary refraction index n of liquid crystal molecule 23
obe 1.524, extraordinary ray refractive index n
ebe 1.824.Display unit 11 due to display panel 1 comprises three display subelements 111, and can obtain thus, the width of each display subelement 111 is approximately 31 μm.The width setting the first electrode 24 is 15 μm, and the distance between adjacent two the first electrodes 24 is 17 μm, and the second electrode 25 is face electrode.
Equally, the voltage added by the first electrode 24 being positioned at liquid crystal lens elementary boundary place is maximum and be greater than the threshold voltage v of liquid crystal molecule 23
thsuccessively decrease gradually from being positioned at the first electrode 24 corresponding to liquid crystal lens elementary boundary to other first electrodes 24 making alives being positioned at liquid crystal lens unit center corresponding, and about liquid crystal lens unit center symmetry wantonly two first electrodes 24 added by voltage symmetry equal.
In order to comparative analysis, be another liquid crystal lens 2a, the diagram of its liquid crystal lens unit is as Fig. 8.Difference is, only has two the first electrode 24a in this liquid crystal lens unit, and the first electrode 24a width is 15 μm.
From Fig. 9 and Figure 10, the curve of multiple electrode structure liquid crystal lens of the present invention is than two electrode structure liquid crystal lens as a comparison closer to nomianl para-curve lens curve, and the light path fluctuation of the light path fluctuation ratio of liquid crystal lens unit both sides of the present invention liquid crystal lens unit both sides as a comparison improves significantly.Also namely, greatly reduce the lens aberration that adjacent lcd lens unit intersection brings due to the unusual fluctuations of electric field, well improve stereos copic viewing comfort level.
Embodiment 2:
As shown in figure 11, display panel 1b is one piece 5.5 inches, resolution is the liquid crystal panel of 2K (as 2560x1440).The horizontal direction of the relative display panel 1b of each liquid crystal lens unit of liquid crystal lens α=75 ° that are tilted to the right are placed, and the width of its liquid crystal lens unit and spacing equal 18 μm.Display unit due to display panel 1b comprises three display subelement 111b, and can obtain thus, the width of each display subelement 111b is approximately 15 μm.Like this, namely allow the width of the first electrode 24b be 15 μm, the distance between adjacent two the first electrode 24b is 15 μm, and the second electrode is face electrode.
Equally, the voltage added by the first electrode 24b being positioned at liquid crystal lens elementary boundary place is maximum and be greater than the threshold voltage v of liquid crystal molecule
thsuccessively decrease gradually from being positioned at the first electrode 24b corresponding to liquid crystal lens elementary boundary to other the first electrodes 24b institute making alive being positioned at liquid crystal lens unit center corresponding, and about liquid crystal lens unit center symmetry wantonly two first electrode 24b added by voltage symmetry equal.
Embodiment 3:
As shown in figure 12, display panel 1c is one piece 28 inches, resolution is the liquid crystal panel of 2K (as 2560x1440).The horizontal direction of the relative display panel 1c of each liquid crystal lens unit of liquid crystal lens α=70 ° that are tilted to the left are placed, and the width of its liquid crystal lens unit and spacing equal 33 μm.Display unit due to display panel 1c comprises three display subelement 111c, and can obtain thus, the width of each display subelement 111c is approximately 57 μm.Like this, the width being positioned at two first electrode 24c at liquid crystal lens elementary boundary place is 15 μm, the width being positioned at other first electrodes 24c of the first electrode 24c centre on liquid crystal lens unit both sides is 20 μm, distance between adjacent two the first electrode 24c is 30 μm, and the second electrode is face electrode.
Equally, the voltage added by the first electrode 24c being positioned at liquid crystal lens elementary boundary place is maximum and be greater than the threshold voltage v of liquid crystal molecule
thsuccessively decrease gradually from being positioned at the first electrode 24c corresponding to liquid crystal lens elementary boundary to other the first electrodes 24c institute making alive being positioned at liquid crystal lens unit center corresponding, and about liquid crystal lens unit center symmetry wantonly two first electrode 24c added by voltage symmetry equal.
From above embodiment 2 and 3, the test result identical with embodiment 1 can be drawn equally.Also be, multi-electrode of the present invention is obliquely installed with respective drive mode due to can adjustable liquid crystal display lens unit liquid crystal deflecting element angle everywhere, the light path curve of liquid crystal lens is almost mated completely with the light path curve of nomianl para-curve physical lens, thus reduce the lens aberration that adjacent lcd lens unit intersection brings due to the unusual fluctuations of electric field, weaken crosstalk, improve stereos copic viewing comfort level greatly.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. 3 d display device, comprise liquid crystal lens and display panel, described liquid crystal lens is arranged at the light emission side of described display panel, described display panel comprises the M × N number of display unit be arranged in array, a described M display unit is arranged along first direction, described N number of display unit is arranged along second direction, described first direction is perpendicular to described second direction, described liquid crystal lens comprises the first substrate and second substrate that are oppositely arranged, described second substrate is provided with the second electrode, it is characterized in that: described first substrate is provided with multiple first electrode, each described first electrode is intervally installed, and extend along third direction, described third direction is different from described first direction, described second direction, when described liquid crystal lens is used for 3D display, identical and the liquid crystal lens unit be arranged in array of multiple structure is formed between described first substrate with described second substrate, each described liquid crystal lens unit is to n described first electrode that should have arrangement continuously, n >=4, the first driving voltage that each described first electrode pair is answered is symmetrical arranged with the center line of described liquid crystal lens unit, and successively decreased gradually to center by the border of described liquid crystal lens unit.
2. 3 d display device as claimed in claim 1, it is characterized in that: described display unit comprises multiple display subelement, the width of described first electrode is not more than the width of described display subelement, and the distance of adjacent two described first electrodes is not more than the width of described display subelement.
3. 3 d display device as claimed in claim 2, is characterized in that: the distance between adjacent two described first electrodes is l, and the spacing of described liquid crystal lens unit is p, then l≤kp, wherein 0 < k≤0.1.
4. 3 d display device as claimed in claim 2, is characterized in that: the width being positioned at described first electrode at described liquid crystal lens elementary boundary place is b, and 10 μm≤b≤30 μm.
5. 3 d display device as claimed in claim 2, is characterized in that: described second electrode is strip electrode.
6. 3 d display device as claimed in claim 2, is characterized in that: described second electrode is face electrode.
7. the 3 d display device according to any one of claim 2 to 6, it is characterized in that: also comprise voltage control device, described voltage control device controls the driving voltage put on each described first electrode and is symmetrical arranged with the center line of described liquid crystal lens unit, and the magnitude of voltage of each described first driving voltage is successively decreased to center gradually by the border of described liquid crystal lens unit.
8. 3 d display device as claimed in claim 7, is characterized in that: described first driving voltage that described first electrode pair being positioned at described liquid crystal lens elementary boundary place is answered is u
0, the threshold voltage of described liquid crystal lens is v
th, u
0>=v
th.
9. 3 d display device as claimed in claim 1, it is characterized in that: described first direction is horizontal direction, described third direction and described first direction are formed with angle, and described angle is α, and α=70 ° ± 10 °.
10. 3 d display device as claimed in claim 1, is characterized in that: the cross sectional shape of described first electrode is rectangle, arch or serrate.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105652456A (en) * | 2016-03-04 | 2016-06-08 | 宁波万维显示科技有限公司 | Low-crosstalk liquid crystal lens 2D-3D switching device |
| CN106292123A (en) * | 2015-07-10 | 2017-01-04 | 深圳超多维光电子有限公司 | Liquid crystal lens and 3 d display device |
| WO2018201614A1 (en) * | 2017-05-02 | 2018-11-08 | Boe Technology Group Co., Ltd. | Liquid crystal lens and manufacturing method thereof and naked eye three-dimensional display panel |
-
2014
- 2014-12-24 CN CN201420832564.7U patent/CN204422876U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106292123A (en) * | 2015-07-10 | 2017-01-04 | 深圳超多维光电子有限公司 | Liquid crystal lens and 3 d display device |
| CN106292123B (en) * | 2015-07-10 | 2018-01-12 | 深圳超多维光电子有限公司 | Liquid crystal lens and 3 d display device |
| CN105652456A (en) * | 2016-03-04 | 2016-06-08 | 宁波万维显示科技有限公司 | Low-crosstalk liquid crystal lens 2D-3D switching device |
| WO2018201614A1 (en) * | 2017-05-02 | 2018-11-08 | Boe Technology Group Co., Ltd. | Liquid crystal lens and manufacturing method thereof and naked eye three-dimensional display panel |
| US10564510B2 (en) | 2017-05-02 | 2020-02-18 | Boe Technology Group Co., Ltd. | Liquid crystal lens and manufacturing method thereof and naked eye three-dimensional display panel |
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