CN204807881U - Liquid crystal lens and stereoscopic display device - Google Patents
Liquid crystal lens and stereoscopic display device Download PDFInfo
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- CN204807881U CN204807881U CN201520498790.0U CN201520498790U CN204807881U CN 204807881 U CN204807881 U CN 204807881U CN 201520498790 U CN201520498790 U CN 201520498790U CN 204807881 U CN204807881 U CN 204807881U
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- 230000008569 process Effects 0.000 claims description 24
- 210000003644 lens cell Anatomy 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 31
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007599 discharging Methods 0.000 abstract 1
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- 230000001154 acute effect Effects 0.000 description 4
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Abstract
The utility model is suitable for a stereoscopic display technology field provides liquid crystal lens, comprises a first substrate and a second substrate which are opposite to each other, the second base plate is equipped with the second electrode towards one side of liquid crystal layer, it joins in marriage to the layer to be equipped with the second between second electrode and the liquid crystal layer, the liquid crystal lens still include control module, each first electrode, the second electrode is connected with control module respectively, when the liquid crystal lens switch display mode, control module is to the processing of discharging of liquid crystal lens, the liquid crystal intraformational the liquid crystal molecules recover to initial condition, in the initial state, the liquid crystal molecules arranges according to the slope of predetermined tilt angle. The liquid crystal molecules arranges in the slope of the predetermined tilt angle of initial condition, and under driving voltage or deflecting voltage's effect, the liquid crystal molecules deflects rapidly, solves to switch the switching delay phenomenon that the in -process appears at display mode, promotes the experience of watching of liquid crystal lens. This embodiment provides stereoscopic display the device, promotes the experience of watching of liquid crystal lens.
Description
Technical field
The utility model belongs to stereo display technique field, particularly relates to liquid crystal lens and comprises the 3 d display device of this liquid crystal lens.
Background technology
The mankind are degree of depth that the nuance of the object seen by right eye and left eye carrys out perceptual object, thus identify stereo-picture, and this species diversity is called as parallax.Stereo display technique is exactly the parallax of the right and left eyes being carried out manufacturer by artificial means, sends to two width images of parallax to images of left and right eyes respectively, makes brain after obtaining the different images that right and left eyes sees, produces the sensation of observing true three-dimension object.
That is familiar with liquid crystal material along with people deepens continuously, and adopt the light-splitting device that liquid crystal material is made, such as, liquid crystal lens, has a wide range of applications, as being applied to field of stereoscopic display.The 3 d display device structural representation that Fig. 1 provides for prior art.3 d display device comprises display device 1 ＇ and is located at liquid crystal lens 2 ＇ of display device 1 ＇ light emission side, in the left eye that the light that display device 1 ＇ sends enters beholder respectively through liquid crystal lens 2 ＇ and right eye, realizes stereo display.Liquid crystal lens 2 ＇ comprises first substrate 21 ＇ and second substrate 22 ＇ that are oppositely arranged, the liquid crystal layer including liquid crystal molecule 23 ＇ is provided with between first substrate 21 ＇ and second substrate 22 ＇, first substrate 21 ＇ is provided with multiple spaced first electrode 24 ＇, second substrate 22 ＇ is provided with the second electrode 25 ＇, be provided with the first both alignment layers 28 ＇ between first electrode 24 ＇ and liquid crystal layer, between the second electrode 25 ＇ and liquid crystal layer, be provided with the second both alignment layers 29 ＇.When 3 d display device is used for 3D display, driving voltage is applied to multiple first electrode 25 ＇, second electrode applies common electric voltage, electric potential difference between driving voltage and common electric voltage, between first substrate 21 ＇ and second substrate 22 ＇, form electric field, liquid crystal molecule 23 ＇ in electric field driven liquid crystal layer arranges and forms the liquid crystal lens unit arranged in array.Therefore, by controlling the driving voltage on each first electrode 25 ＇, the index distribution of liquid crystal lens 2 ＇ can change accordingly, thus controls the bright dipping of display device 1 ＇, realizes stereo display and 2D/3D freely switches.Spacer 27 ＇ for supporting thickness of liquid crystal layer is also provided with between first substrate 21 ＇ and second substrate 22 ＇, spacer 27 ＇ generally adopts transparent material to make, when 3 d display device is in 2D display mode, liquid crystal molecule 23 ＇ of the light that display device 1 ＇ sends near spacer 27 ＇ and spacer 27 ＇, now, the refractive index of spacer 27 ＇ and the refringence of liquid crystal molecule 23 ＇ larger, light reflects at spacer 27 ＇, as human eye viewing liquid crystal lens 2 ＇, bright spot or color some phenomenon is there is at spacer 27 ＇ place, affect viewing effect and the viewing comfort level of beholder.
For eliminating when 2D shows in prior art, the bright spot phenomenon occurred at spacer 27 ＇ place, when 2D shows, the driving voltage of each first electrode is all switched to deflection voltage by driving circuit, wherein, pressure reduction between the common electric voltage of deflection voltage and the second electrode produces electric field and makes whole liquid crystal molecule 23 ＇ that the deflection of equal angular occur, and deflection after liquid crystal molecule 23 ＇ and spacer 27 ＇ between refringence in preset range, solve because the refringence between liquid crystal molecule 23 ＇ and spacer 27 ＇ is larger, light reflects at spacer 27 ＇, spacer 27 ＇ place is caused to occur bright spot or color some phenomenon.
When 3 d display device is when for stereo display, liquid crystal molecule 23 ＇ carries out rotation arrangement according to paraboloidal potential lines, under being switched to 2D state, potential lines there occurs a larger jump, switch process in have partial liquid crystal molecule 23 ＇ cause confusion arrangement phenomenon, just eliminate the phenomenon of liquid crystal mixing through the longer time, in the process eliminated, there will be the phenomenon of similar broken string, badly influence display effect.When 3 d display device also there will be similar liquid crystal mixing phenomenon by 2D state in the transfer process of 3D state.In order to eliminate liquid crystal mixing phenomenon and then eliminate broken string phenomenon, China Patent Publication No. CN104503182A is open, driving governor carries out discharge process according to display mode switching command to light-splitting device, controls to drive the voltage required for the switching of circuit for generating generation display mode.Utility model people states in realization in the process of scheme and finds, the discharge process increased still cannot make liquid crystal molecule 23 ＇ get back to original state fast and arrive vertical state faster under the driving of 2D voltage, there is the problem of switching delay, affect the normal viewing of beholder, user's viewing experience is bad.
Utility model content
The object of the utility model embodiment is to provide a kind of liquid crystal lens, is intended to solve prior art Stereo display device and there is switching delay in display mode handoff procedure, cause the problem affecting viewing experience.
The utility model embodiment realizes like this, liquid crystal lens, comprise the first substrate and second substrate that are oppositely arranged, liquid crystal layer and spacer is provided with between described first substrate and described second substrate, described first substrate is provided with multiple first electrode towards the side of described liquid crystal layer, described in each, the first electrode gap is arranged, the first both alignment layers is provided with between described first electrode and described liquid crystal layer, described second substrate is provided with the second electrode towards the side of described liquid crystal layer, the second both alignment layers is provided with between described second electrode and described liquid crystal layer, the frictional direction of described first both alignment layers is parallel to the frictional direction of described second both alignment layers, described liquid crystal lens also comprises control module, each described first electrode, described second electrode is connected with described control module respectively, when described liquid crystal lens switches display mode, described control module carries out discharge process to described liquid crystal lens, liquid crystal molecule in described liquid crystal layer returns to original state, in described original state, described liquid crystal molecule tilts to arrange according to the tilt angle preset.
Further, the tilt angle that described default tilt angle is preset is more than or equal to 3 ° and is less than or equal to 6 °.
Further, described default tilt angle is less than or equal to 4 °.
Further, the frictional direction of described first both alignment layers is crossing with the bearing of trend of described first electrode, forms the first angle.
Further, described first angle is θ, and 70 °≤θ≤90 °.
Further, each described first electrode incline is arranged on described first substrate, and the bearing of trend of described first electrode is crossing with the arragement direction of described first electrode, forms the second angle.
Further, described second angle α, and 60 °≤α≤80 °.
Further, described display mode comprises 3D pattern and 2D display mode, when described liquid crystal lens is in described 3D display mode, described control module applies driving voltage to the first electrode described in each, described driving voltage drives described liquid crystal deflecting element, to form array arrangement and the identical liquid crystal lens unit of structure between described first substrate with described second substrate, liquid crystal lens unit described in each to there being multiple described first electrode, adjacent two described liquid crystal lens units shareds described first electrode.
Further, described second electrode is strip electrode and is arranged at intervals with multiple, and the bearing of trend of described second electrode is parallel to the bearing of trend of described first electrode.
Further, between adjacent two described second electrodes, form peristome, the center line of described peristome corresponding thereto and the center line being positioned at described first electrode at described liquid crystal lens cell edges place on same straight line.
Further, the width of described peristome is l
1, the width of described first electrode corresponding with described peristome is b
1, and l
1≤ 2b
1.
Further, described in corresponding each of described liquid crystal lens unit, the width of the first electrode is equal, and the distance between adjacent two described first electrodes is l
2, and l
2≤ 1.5b
1.
Preferably, described second electrode is face electrode.
The liquid crystal lens that the present embodiment provides, liquid crystal molecule tilts to arrange according to the tilt angle preset in original state, when liquid crystal lens switches to 3D display mode by 2D display mode, control module carries out discharge process to liquid crystal lens, liquid crystal molecule returns to original state, and namely now liquid crystal molecule tilts to arrange, under the effect of driving voltage according to the tilt angle preset, liquid crystal molecule deflects rapidly, to form liquid crystal lens unit.When liquid crystal lens switches to 2D display mode by 3D display mode, control module carries out discharge process to liquid crystal lens, liquid crystal molecule returns to original state, namely now liquid crystal molecule tilts according to the tilt angle preset, under the effect of the second driving voltage, liquid crystal molecule deflects rapidly, to make refringence between liquid crystal molecule and spacer in preset range, the frictional direction of the first both alignment layers that the present embodiment provides and the frictional direction of the second both alignment layers make liquid crystal molecule tilt to arrange according to the tilt angle preset in original state, under the effect of driving voltage or deflection voltage, liquid crystal molecule deflects rapidly, solve the switching delay phenomenon occurred in display mode handoff procedure, promote the viewing experience of liquid crystal lens.
Another object of the utility model embodiment is to provide 3 d display device, comprises display panel, also comprises above-mentioned liquid crystal lens, and described liquid crystal lens is arranged at the light emission side of described display panel.
The 3 d display device that the present embodiment provides, switched to 3D display mode by 2D display mode, or switched to 2D display mode by 3D display mode, control module carries out discharge process to liquid crystal lens, liquid crystal molecule returns to original state, tilt to arrange according to the tilt angle preset in original state owing to making liquid crystal molecule at the frictional direction of the first both alignment layers and the frictional direction of the second both alignment layers, therefore, under corresponding driving voltage effect, liquid crystal molecule can deflect rapidly, solve the switching delay phenomenon occurred in display mode handoff procedure, promote the viewing experience of liquid crystal lens.
Accompanying drawing explanation
Fig. 1 is the perspective view of the 3 d display device that prior art provides;
Fig. 2 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. 3 is the structural representation of the 3 d display device that the utility model embodiment provides;
Fig. 4 is the first angle structural representation that the utility model embodiment provides;
Fig. 5 is the second angle structural representation that the utility model embodiment provides;
Fig. 6 is the optical path difference distribution schematic diagram of the liquid crystal lens that the utility model embodiment provides.
Embodiment
In order to make the technical problems to be solved in the utility model, technical scheme and beneficial effect clearly understand, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the utility model, and be not used in restriction the utility model.
As shown in Figure 3, the liquid crystal lens 2 that the present embodiment provides, comprise the first substrate 21 and second substrate 22 that are oppositely arranged, liquid crystal layer (not shown) and spacer 27 is provided with between first substrate 21 and second substrate 22, first substrate 21 is provided with multiple first electrode 24 towards the side of liquid crystal layer, each the first electrode 24 interval is arranged, the first both alignment layers 28 is provided with between first electrode 24 and liquid crystal layer, second substrate 22 is provided with the second electrode 25 towards the side of liquid crystal layer, the second both alignment layers 29 is provided with between second electrode 25 and liquid crystal layer, the frictional direction of the first both alignment layers 28 is parallel to the frictional direction of the second both alignment layers 29, liquid crystal lens 2 also comprises control module (not shown), each first electrode 24, second electrode 25 is connected with control module respectively, when liquid crystal lens 2 switches display mode, control module carries out discharge process to liquid crystal lens 2, liquid crystal molecule 23 in liquid crystal layer returns to original state, in original state, liquid crystal molecule 23 tilts to arrange according to the tilt angle preset.In the present embodiment, original state refers to that liquid crystal lens 2 is in non-powering state, and in original state, liquid crystal molecule 23, under the frictional direction of the first both alignment layers 28 and the frictional direction effect of the second both alignment layers 29, is arranged according to the angular slope preset.When liquid crystal lens 2 switches display mode, control module carries out discharge process to liquid crystal lens 2.The display mode that the present embodiment provides comprises 2D display mode and 3D display mode, liquid crystal molecule 23 tilts to arrange according to the tilt angle preset in original state, when liquid crystal lens 2 switches to 3D display mode by 2D display mode, control module carries out discharge process to liquid crystal lens 2, liquid crystal molecule 23 returns to original state, namely now liquid crystal molecule 23 tilts to arrange according to the tilt angle preset, under the effect of driving voltage, liquid crystal molecule 23 deflects rapidly, to form liquid crystal lens unit L1, when liquid crystal lens 2 switches to 2D display mode by 3D display mode, control module carries out discharge process to liquid crystal lens 2, liquid crystal molecule 23 returns to original state, namely now liquid crystal molecule 23 tilts to arrange according to the tilt angle preset, under the effect of deflection voltage, liquid crystal molecule 23 deflects rapidly, to make refringence between liquid crystal molecule 23 and spacer 27 in preset range, the frictional direction of the first both alignment layers 28 that the present embodiment provides and the frictional direction of the second both alignment layers 29 make liquid crystal molecule 23 in original state according to the tilt angle arrangement preset, under the effect of driving voltage or deflection actuation voltage, liquid crystal molecule 23 deflects rapidly, solve the switching delay phenomenon occurred in display mode handoff procedure, promote the viewing experience of liquid crystal lens 2.
When liquid crystal lens 2 is for 3D display mode, form array arrangement between first substrate 21 with second substrate 22 and the identical liquid crystal lens unit L1 of structure, each liquid crystal lens unit L1 is to there being multiple first electrode 24, and adjacent two liquid crystal lens unit L1 share first electrode 24, each first electrode 24 corresponding to liquid crystal lens unit L1, as S11, S12, S13, S14, S15, S16 apply symmetrical driving voltage, apply common electric voltage to the second electrode 25.Driving voltage to present the trend of successively decreasing to center by two ends and voltage presents symmetrical, particularly, (V (S11)=V (S16)) > (V (S12)=V (S15)) > (V (S13)=V (S14)), in the present embodiment, V (S11)=V (S16)=Vseg is set
0, V (S12)=V (S15)=Vseg
1, V (S13)=V (S14)=Vseg
2driving voltage forms electric field intensity driving electric field not etc. between first substrate 21 and second substrate 22, the liquid crystal molecule 23 in electric field driven liquid crystal layer is driven to deflect the parabolic type liquid crystal lens unit L1 forming gradually changed refractive index, the light that display panel sends is through liquid crystal lens 2, liquid crystal lens unit L1 carries out light-splitting processing to light, to present stereo-picture.Therefore, by controlling the driving voltage on each first electrode 24, the index distribution of liquid crystal lens 2 can change accordingly, thus controls the bright dipping of display panel, realizes stereo display and 2D/3D freely switches.
For eliminating when 2D shows, the bright spot phenomenon occurred at spacer 27 place, when 2D shows, control module is by driving voltage Vseg
0, Vseg
1, Vseg
2all switch to deflection voltage U
0, deflection voltage U
0and the electric potential difference between common electric voltage produces deflecting electric field, under the effect of deflecting electric field, there is the deflection of equal angular in liquid crystal molecule 23, and deflection after liquid crystal molecule 23 and spacer 27 between refringence in preset range, preset range refers to the scope being less than 0.1 according to the refringence between spacer 27 and liquid crystal molecule 23, solve liquid crystal lens 2 when 2D shows, because the refringence between liquid crystal molecule 23 and spacer 27 is larger, light reflects at spacer 27, causes spacer 27 place to occur bright spot or color some phenomenon.
When liquid crystal lens 2 switches to 2D display mode by 3D display mode, the driving voltage on each first electrode 24 is all discharged to total null voltage by control module, and particularly, control module is by the Vseg of each the first electrode 24
0, Vseg
1, Vseg
2through discharge process to total null voltage, after having discharged, then, the total null voltage on each first electrode 24 is all switched to deflection voltage U by control module
0.Because liquid crystal lens 2 is when 3D display mode, liquid crystal molecule 23 is arranged according to electric field line, in discharge process, liquid crystal molecule 23 returns to rapidly initial arrangement state by arranging along electric field line, the liquid crystal molecule 23 that the present embodiment provides tilts to arrange according to the tilt angle preset in original state, liquid crystal molecule 23 is angularly obliquely installed, when switching to 2D display mode again, liquid crystal molecule 23 deflects rapidly, liquid crystal molecule 23 after deflection and the refringence between spacer 27 are in preset range, not only eliminate liquid crystal lens 2 when 2D shows, the bright spot phenomenon that spacer 27 place exists, and, shorten liquid crystal molecule 23 response time, improve the switching time of liquid crystal lens 2.
When liquid crystal lens 2 switches to 3D display mode by 2D display mode, control module is by the deflection voltage U of each the first electrode 24
0all be discharged to total null voltage, after having discharged, the total null voltage on each first electrode 24 is switched to driving voltage Vseg by control module more respectively
0, Vseg
1, Vseg
2.Because liquid crystal lens 2 is when 2D display mode, after deflection, liquid crystal molecule 23 and the refringence of spacer 27 are in preset range, in discharge process, liquid crystal molecule 23 returns to rapidly initial arrangement state by deflection state, the liquid crystal molecule 23 that the present embodiment provides is arranged according to the tilt angle preset in original state, liquid crystal molecule 23 is angularly obliquely installed, when switching to 3D display mode again, liquid crystal molecule 23 deflects to arrange according to electric field line rapidly, thus form liquid crystal lens unit L1, shorten liquid crystal molecule 23 response time, improve the switching time of liquid crystal lens 2, improve user's viewing experience.
The present embodiment provides default tilt angle to be more than or equal to 3 ° and is less than or equal to 6 °, within the scope of this, liquid crystal molecule 23 tilts to arrange according to the tilt angle preset, not only guarantee when liquid crystal lens 2 is for 3D display mode, liquid crystal molecule 23 deflects to arrange according to electric field line rapidly, thus form liquid crystal lens unit L1, when liquid crystal lens 2 is for 2D display mode, liquid crystal molecule 23 deflects rapidly, liquid crystal molecule 23 after deflection and the refringence between spacer 27 are in preset range, to eliminate spacer 27 bright spot phenomenon, and, the angular range of the tilt angle preset arranged solves the problem of visible angle deviation, promote viewing effect, when the tilt angle preset exceeds above-mentioned scope, liquid crystal lens 2 visible angle deviation when 3D shows is large, affect viewing effect.
For promoting viewing effect further, the degree of tilt preset that this enforcement provides is more than or equal to 3 ° and is less than or equal to 4 °, liquid crystal molecule 23 tilts arrangement, the not only response time of shortening switching display mode according to the tilt angle preset, and eliminates the problem of visible angle deviation effects viewing effect.In original state, liquid crystal molecule 23, under the frictional direction of the first both alignment layers 28 and the frictional direction effect of the second both alignment layers 29, tilts to arrange according to the tilt angle preset.When liquid crystal lens 2 is for 3D display mode, liquid crystal molecule 23 deflects to arrange according to electric field line rapidly, thus form liquid crystal lens unit L1, when liquid crystal lens 2 is for 2D display mode, liquid crystal molecule 23 deflects rapidly, liquid crystal molecule 23 after deflection and the refringence between spacer 27 in preset range, to eliminate spacer 27 bright spot phenomenon.
As shown in Figure 4, for ensureing that liquid crystal molecule 23 tilts to arrange according to the tilt angle preset in original state, in the present embodiment, the frictional direction arranging the first both alignment layers 28 is crossing with the arragement direction of the first electrode 24, forms the first angle.In this enforcement, the arragement direction of the first electrode 24 refers to the arragement direction that multiple first electrode 24 array arrangement is formed.Frictional direction due to the first both alignment layers 28 is parallel to the frictional direction of the second both alignment layers 29, and it is crossing with the arragement direction of the first electrode 24 respectively, like this, under the effect of the first both alignment layers 28, second both alignment layers 29, liquid crystal molecule 23 is obliquely installed according to the tilt angle preset, and is more prone to realize tilting to arrange according to the tilt angle preset at original state liquid crystal molecule 23.
In the present embodiment, first angle is θ, and 70 °≤θ≤90 °, the first angle theta arranged, guarantee under the rubbing action of the first both alignment layers 28 and the second both alignment layers 29, liquid crystal molecule 23 tilts to arrange according to the tilt angle preset, then when liquid crystal lens 2 switches to 3D display mode by 2D display mode, control module carries out discharge process to liquid crystal lens 2, liquid crystal molecule 23 returns to original state, namely now liquid crystal molecule 23 tilts to arrange according to the tilt angle preset, under the effect of driving voltage, liquid crystal molecule 23 deflects rapidly, to form liquid crystal lens unit L1, when liquid crystal lens 2 switches to 2D display mode by 3D display mode, control module carries out discharge process to liquid crystal lens 2, liquid crystal molecule 23 returns to original state, namely now liquid crystal molecule 23 tilts to arrange according to the tilt angle preset, under the effect of deflection voltage, liquid crystal molecule 23 deflects rapidly, to make refringence between liquid crystal molecule 23 and spacer 27 in preset range, the frictional direction of the first both alignment layers 28 that the present embodiment provides and the frictional direction of the second both alignment layers 29 make liquid crystal molecule 23 tilt to arrange according to the tilt angle preset in original state, under the effect of driving voltage or deflection actuation voltage, liquid crystal molecule 23 deflects rapidly, solve the switching delay phenomenon occurred in display mode handoff procedure, promote the viewing experience of liquid crystal lens 2.The first angle theta that the present embodiment provides refers to the acute angle that the vergence direction of the first electrode 24 and the frictional direction of the first both alignment layers 28 are formed, in the present embodiment, the vergence direction of the first electrode 24 is Right deviation, similarly, the vergence direction that first electrode 24 can be set for left-leaning, the acute angle of the frictional direction institute sandwiched that the first angle theta is the first electrode 24 and the first both alignment layers 28.
As shown in Figure 3, each second electrode 25 is intervally installed, gap between two adjacent the second electrodes 25 forms peristome 26, and the center line of peristome 26 corresponding thereto and the center line being positioned at the first electrode 24 of liquid crystal lens unit L1 edge on same straight line, guarantee peristome 26 and the corresponding setting of the first electrode 24 being positioned at liquid crystal lens unit L1 edge, because peristome 26 is not provided with conductive material, would not too acutely and then optical path difference be herein caused to have larger fluctuation in the change of the intersection electric field of liquid crystal lens unit L1 and liquid crystal lens unit L2.Apply voltage to the first electrode 24, second electrode 25 respectively, it is relatively good that the lens light path difference that liquid crystal lens 2 shows overlaps with the parabolic type lens of standard.When liquid crystal lens 2 is when carrying out stereo display, significantly can reduce crosstalk, promoting the quality of stereo-picture display.The electric field curve at peristome 26 place just can draw close the region of conductive material with comparatively mild state, optimize the electric-field intensity distribution of liquid crystal lens unit L1 edge, improve the degree of deflection being positioned at liquid crystal molecule 23 near liquid crystal lens unit L1 edge first electrode 24, the optical path difference distribution curve of liquid crystal lens 2 is more level and smooth in the performance of phase-delay quantity.Like this, the electric field change of the intersection of liquid crystal lens unit L1 and liquid crystal lens unit L2 can obtain improvement to a certain extent, and draw close in the second electrode 25 with comparatively mild state, avoid causing optical path difference herein to have larger fluctuation because of electric field change, the crosstalk phenomenon that obvious reduction adjacent lcd lens unit L1 and liquid crystal lens unit L2 produces at intersection, promotes the effect of stereo display and the comfort level of viewing.Simultaneously, second driving voltage is applied to each second electrode 25, guarantees to be formed 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 the demand that liquid crystal lens 2 is applied to stereo display.The liquid crystal lens 2 that the present embodiment provides, when for stereo display, only needs to apply the first voltage to the first electrode 24, second voltage is applied to the second electrode 25, the liquid crystal molecule 23 in liquid crystal lens 2 is made to deflect the liquid crystal lens unit L1 forming gradually changed refractive index, simple to operate, easy to implement.
As shown in Figure 3, adopt the liquid crystal lens 2 that the present embodiment provides, at second substrate 22, place is formed with peristome 26, peristome 26 is not provided with conductive material, when liquid crystal lens 2 is for stereo display, optimize the electric-field intensity distribution of liquid crystal lens unit L1 edge, improve be positioned at liquid crystal lens unit L1 edge the first electrode 24 near the degree of deflection of liquid crystal molecule 23, the optical path difference distribution curve of liquid crystal lens 2 is more level and smooth in the performance of phase-delay quantity, significantly reduce the crosstalk phenomenon that liquid crystal lens unit L1 and liquid crystal lens unit L2 occurs at intersection, promote the effect of stereo display and the comfort level of viewing, the optical path difference at intersection significantly improving adjacent lcd lens unit L1 and liquid crystal lens unit L2 distributes, optical path difference distribution after optimization is close to ideal parabolic, thus improve the crosstalk phenomenon adopting the 3 d display device of liquid crystal lens 2 to produce when stereo display, improve stereo display effect and viewing comfort level.
In the present embodiment, the width that can set the second electrode 25 is less than the spacing of liquid crystal lens unit L1, and the spacing of liquid crystal lens unit L1 refers to the spacing of the center line of two the first electrodes 24 being positioned at liquid crystal lens unit L1 edge.Because the center line of liquid crystal lens unit L1 and the center line of the second corresponding electrode 25 are on same straight line, the electric field formed between such second electrode 25 and the first electrode 24, drive liquid crystal molecule 23 that systematicness deflection occurs, when then guaranteeing liquid crystal lens 2 for stereo display, the liquid crystal lens unit L1 that structure is identical can be presented.
Width due to the second electrode 25 is less than the spacing of liquid crystal lens unit L1, and forms peristome 26 between liquid crystal lens unit L1 and liquid crystal lens unit L2.Namely the width of peristome 26 can be less than the width of the first electrode 24 being positioned at liquid crystal lens unit L1 edge, like this, second electrode 25 and the first electrode 24 have relative superposition part, optimize the electric-field intensity distribution of liquid crystal lens unit L1 and liquid crystal lens unit L2 at intersection, improve be positioned at liquid crystal lens unit L1 edge the first electrode 24 near the degree of deflection of liquid crystal molecule 23, the optical path difference distribution curve of liquid crystal lens 2 is more level and smooth in the performance of phase-delay quantity, reduce the crosstalk phenomenon that adjacent lcd lens unit L1 and liquid crystal lens unit L2 produces at intersection, promote the effect of stereo display and the comfort level of viewing.
Certainly, the width of setting peristome 26 is greater than the width of the first electrode 24 being positioned at liquid crystal lens unit L1 edge, and the width that can preferably set peristome 26 is l
1, the width of first electrode 24 corresponding with peristome 26 is b
1, and l
1≤ 2b
1namely the second electrode 25 does not overlap completely with the first electrode 24, second substrate 22 is complete in conductive material with the first electrode 24 opposite position place being positioned at liquid crystal lens unit L1 edge, therefore, the electric field curve at peristome 26 place just can draw close the region of conductive material with comparatively mild state, optimize the electric-field intensity distribution of liquid crystal lens unit L1 edge, improve be positioned at liquid crystal lens unit L1 edge the first electrode 24 near the degree of deflection of liquid crystal molecule 23, present more level and smooth state in the performance of phase-delay quantity.
Be understandable that, the width of peristome 26 can also be equaled the width of the first electrode 24 being positioned at liquid crystal lens unit L1 edge, namely the second electrode 25 does not overlap with the first electrode 24, the light path that liquid crystal lens unit L1 and liquid crystal lens unit L2 can be suppressed equally to produce at intersection fluctuates, and then the electric field curve of liquid crystal lens unit L1 and liquid crystal lens unit L2 intersection, can draw close in the second electrode 25 with comparatively mild state, reduce the deviation of liquid crystal lens unit L1 and the optical path difference of liquid crystal lens unit L2 intersection and the parabolic type lens of standard, improve the crosstalk phenomenon that adjacent lcd lens unit L1 and liquid crystal lens unit L2 intersection occur, promote the display quality of liquid crystal lens 2.
For the liquid crystal lens 2 that the present embodiment provides better is described, when stereo display, the crosstalk phenomenon that liquid crystal lens unit L1 and liquid crystal lens unit L2 intersection occur can be reduced significantly, existing experimental result to be described.Particularly, corresponding second electrode 25 of the liquid crystal lens unit L1 that provides of the present embodiment and two the first electrodes 24.The spacing 256um of setting liquid crystal lens unit L1, uses LC-MASTER software to carry out optical path difference simulation, and utilizes MATLAB to process gained simulated data.The ordinary refraction index n of the liquid crystal molecule 23 that this simulated experiment uses
0be 1.524, extraordinary ray refractive index n
ebe 1.824.The thickness of liquid crystal lens 2 and the width of the first electrode 24 are all set to 30um, and driving voltage, remain unchanged in the simulated experiment of liquid crystal lens 2 ＇ (shown in Fig. 1) that these major parameters provide in prior art and the liquid crystal lens 2 that the present embodiment provides.Fig. 2 illustrates 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 ＇, comparatively large with the deviation of the optical path difference distribution curve of standard parabolic type lens, these deviations can cause larger crosstalk in the 3D viewing of reality.Fig. 6 illustrates the analog result of the liquid crystal lens 2 that the present embodiment provides, and in the present embodiment, the width of the second electrode 25 is set to 156um.Can find out, simulated data after treatment, the optical path difference curve of the liquid crystal lens 2 that the present embodiment provides and the optical path difference curve co-insides of standard parabolic type lens obtain relatively good, and at the intersection of liquid crystal lens unit L1 and liquid crystal lens unit L2, less with the deviation of the optical path difference distribution curve of standard parabolic type lens, high degree improves the wave phenomenon of optical path difference curve, and then in stereo display process, effectively weaken crosstalk phenomenon, and then promote viewing comfort level.The optical path difference distribution curve of liquid crystal lens 2 ＇ provided relative to prior art has greatly improved, the crosstalk 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 Figure 3, in the present embodiment, the bearing of trend of the second electrode 25 is parallel to the bearing of trend of the first electrode 24, the bearing of trend that can arrange the first electrode 24 can be parallel to the Width of first substrate 21, when liquid crystal lens 2 is for stereo display, first voltage is applied to the first electrode 24, second voltage is applied to the second electrode 25, thus between first substrate 21 and second substrate 22, form the liquid crystal lens unit L1 of array arrangement, adopt etch process on first substrate 21, process the first electrode 24, easy to operate.Certainly, can also in order to solve liquid crystal lens 2 in the moire fringes problem for occurring during stereo display, each first electrode 24 is obliquely installed on first substrate 22, bearing of trend due to the second electrode 25 is parallel to the bearing of trend of the first electrode 24, such first electrode 24, second electrode 25 is all obliquely installed along certain angle, the periodicity improving liquid crystal lens 2 is interfered, and weakens moire fringes, promotes liquid crystal lens 2 in the display effect for stereo display.
As shown in Figure 5, for ease of designing the angle of inclination of the first electrode 24, and the first electrode 24 be obliquely installed, second electrode 25 can not affect the spectrophotometric result of liquid crystal lens 2, guarantee that left-eye image is sent to the left eye of beholder by liquid crystal lens 2 when stereo display, eye image is sent to the right eye of beholder, the bearing of trend setting the first electrode 24 is crossing with the bearing of trend of the side of first substrate 22, forming the second angle is α, and 60 °≤α≤80 °, the angle of inclination of the first electrode 24 is set within the scope of this, not only moire fringes can be improved, and the problem that crosstalk etc. affects stereo display can be reduced.The second angle α that the present embodiment provides refers to the acute angle that the vergence direction of the first electrode 24 and the bearing of trend of first substrate 22 side are formed, in the present embodiment, the vergence direction of the first electrode 24 is Right deviation, similarly, can arrange the vergence direction of the first electrode 24 for left-leaning, the second angle α is the first electrode 24 and the acute angle of first substrate 24 side institute sandwiched.
In the present embodiment, for ease of processing the first electrode 24, first electrode 24 can be set to strip electrode, and the first electrode 24 is rectangle, arch or serrate along the cross sectional shape of the first electrode 24 bearing of trend, be convenient to make processing, in the present embodiment, the shape that first electrode 24 is chosen should meet, when liquid crystal lens 2 is for stereo display, respectively driving voltage is applied to the first electrode 24 and the second electrode 25, deflect to make liquid crystal molecule 23 and form liquid crystal lens unit L1.Certainly; the cross sectional shape of the first electrode 24 also can be other rules or irregularly shaped; all belong within protection domain of the present utility model; determination that should be undoubted; the cross sectional shape of the first electrode 24 that the present embodiment provides; be only applicable to illustrate, the first electrode 24 of regular shape is more prone to processing.
As shown in Figure 3, the width of each the first electrode 24 that liquid crystal lens unit L1 is corresponding is equal, and the distance between adjacent two the first electrodes 24 is l
2, and l
2≤ 1.5b
1.Distance in the present embodiment between two the first electrodes 24 refers to the distance between the side that adjacent two the first electrodes 24 are relative.According to the designing requirement of liquid crystal lens 2, etch multiple the first electrode 24 waiting width, easy to operate.
As shown in Figure 3, similarly, be convenient to make processing second electrode 25, second electrode 25 is set to strip electrode, and the second electrode 25 is rectangle, arch or serrate along the cross sectional shape of the second electrode 25 bearing of trend, in the present embodiment, the shape that second electrode 25 is chosen should meet, when liquid crystal lens 2 is for stereo display, respectively driving voltage is applied to the first electrode 24 and the second electrode 25, deflect to make liquid crystal molecule 23 and form liquid crystal lens unit L1.Certainly; the cross sectional shape of the second electrode 25 also can be other rules or irregularly shaped; all belong within protection domain of the present utility model; determination that should be undoubted; the cross sectional shape of the second electrode 25 that the present embodiment provides; be only applicable to illustrate, the second electrode 25 of regular shape is more prone to processing.
As shown in Figure 3, owing to adopting the second electrode 25 for strip electrode, for promoting the display quality of liquid crystal lens 2 when stereo display further, the spacing of setting liquid crystal lens unit L1 is L, and the width of the second electrode 25 is M,
wherein, n is the number of the second electrode 25 corresponding liquid crystal lens unit L1, and n is natural number and n>=1.The spacing L of setting liquid crystal lens unit L1 is the distance between the center line of two the first electrodes 24 of liquid crystal lens unit L1 edge.As shown in Figure 6, as the corresponding liquid crystal lens unit L1 of the second electrode 25, namely during n=1, the width means of the second electrode 25 is
the width of the second electrode 25 is less than the spacing of liquid crystal lens unit L1, and the spacing of liquid crystal lens unit L1 can be infinitely close to, namely the width of peristome 26 can be arranged arbitrarily, can solve the cross-interference issue that liquid crystal lens unit L1 and liquid crystal lens unit L2 exists at intersection, convenient operation personnel set the width of the second electrode 25 as the case may be.The peristome 26 formed between adjacent two the second electrodes 25 is relative with the first electrode 24 being positioned at liquid crystal lens unit L1 edge, optimize the electric-field intensity distribution of liquid crystal lens unit L1 and liquid crystal lens unit L2 edge, improve the degree of deflection being positioned at liquid crystal molecule 23 near liquid crystal lens unit L1 edge first electrode 24, the optical path difference distribution curve of liquid crystal lens 2 is more level and smooth in the performance of phase-delay quantity, reduce the crosstalk phenomenon that adjacent lcd lens unit L1 and liquid crystal lens unit L2 occurs at intersection, promote the effect of stereo display and the comfort level of viewing.Meanwhile, for ensureing that liquid crystal lens 2 is when stereo display, normally can present stereo-picture, the distance between adjacent two the second electrodes 25 can not be excessive, affects the normal display of liquid crystal lens 2.
Certainly, the second electrode 25 that the present embodiment provides can also be face electrode, when liquid crystal lens 2 is for 3D display mode, driving voltage is applied to each first electrode 24, common electric voltage is applied to the second electrode 25 or by the second electrode 25 ground connection, second electrode 25 adopts face electrode, provides stable common electric voltage or ground voltage, easy to operate.Array arrangement is formed and the identical liquid crystal lens unit L1 of structure between first substrate 21 with second substrate 22, each liquid crystal lens unit L1 is to there being multiple first electrode 24, adjacent two liquid crystal lens unit L1 share first electrode 24, and each first electrode 24 corresponding to liquid crystal lens unit L1, as S11, S12, S13, S14, S15, S16 applies symmetrical driving voltage, applies common electric voltage to the second electrode 25.Driving voltage to present the trend of successively decreasing to center by two ends and voltage presents symmetrical, particularly, (V (S11)=V (S16)) > (V (S12)=V (S15)) > (V (S13)=V (S14)), in the present embodiment, V (S11)=V (S16)=Vseg is set
0, V (S12)=V (S15)=Vseg
1, V (S13)=V (S14)=Vseg
2driving voltage forms electric field intensity driving electric field not etc. between first substrate 21 and second substrate 22, the liquid crystal molecule 23 in electric field driven liquid crystal layer is driven to deflect the parabolic type liquid crystal lens unit L1 forming gradually changed refractive index, the light that display panel 1 sends is through liquid crystal lens 2, liquid crystal lens unit L1 carries out light-splitting processing to light, to present stereo-picture.Therefore, by controlling the driving voltage on each first electrode 24, the index distribution of liquid crystal lens 2 can change accordingly, thus controls the bright dipping of display panel 1, realizes stereo display and 2D/3D freely switches.
When liquid crystal lens 2 is for 2D display mode, deflection voltage is applied to each first electrode 24, common electric voltage is applied to the second electrode 25 or by the second electrode 25 ground connection, the second electrode 25 adopts face electrode, stable common electric voltage or ground voltage are provided, easy to operate.When 2D shows, by driving voltage Vseg
0, Vseg
1, Vseg
2all switch to deflection voltage U
0, deflection voltage U
0and the electric potential difference between common electric voltage produces deflecting electric field, under the effect of deflecting electric field, there is the deflection of equal angular in liquid crystal molecule 23, and deflection after liquid crystal molecule 23 and spacer 27 between refringence in preset range, preset range refers to the scope being less than 0.1 according to the refringence between spacer 27 and liquid crystal molecule 23, solve liquid crystal lens 2 when 2D shows, because the refringence between liquid crystal molecule 23 and spacer 27 is larger, light reflects at spacer 27, causes spacer 27 place to occur bright spot or color some phenomenon.
As shown in Figure 3, 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 light emission side of display panel 1, when liquid crystal lens 2 is for stereo display, driving voltage is applied to the first electrode 24, equal common electric voltage is applied to the second electrode 25, electric potential difference between driving voltage and common electric voltage forms electric field intensity driving electric field not etc. between first substrate 21 and second substrate 22, electric field driven liquid crystal molecule 23 is driven to deflect, form the liquid crystal lens unit L1 of gradually changed refractive index, liquid crystal lens unit L1 adjusts the light that display panel 1 sends, to present stereo-picture.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (14)
1. liquid crystal lens, comprise the first substrate and second substrate that are oppositely arranged, liquid crystal layer and spacer is provided with between described first substrate and described second substrate, described first substrate is provided with multiple first electrode towards the side of described liquid crystal layer, described in each, the first electrode gap is arranged, the first both alignment layers is provided with between described first electrode and described liquid crystal layer, described second substrate is provided with the second electrode towards the side of described liquid crystal layer, the second both alignment layers is provided with between described second electrode and described liquid crystal layer, the frictional direction of described first both alignment layers is parallel to the frictional direction of described second both alignment layers, it is characterized in that: described liquid crystal lens also comprises control module, each described first electrode, described second electrode is connected with described control module respectively, when described liquid crystal lens switches display mode, described control module carries out discharge process to described liquid crystal lens, liquid crystal molecule in described liquid crystal layer returns to original state, in described original state, described liquid crystal molecule tilts to arrange according to the tilt angle preset.
2. liquid crystal lens as claimed in claim 1, is characterized in that: the tilt angle that described default tilt angle is preset is more than or equal to 3 ° and is less than or equal to 6 °.
3. liquid crystal lens as claimed in claim 2, is characterized in that: described default tilt angle is less than or equal to 4 °.
4. liquid crystal lens as claimed in claim 3, is characterized in that: the frictional direction of described first both alignment layers is crossing with the bearing of trend of described first electrode, forms the first angle.
5. liquid crystal lens as claimed in claim 4, is characterized in that: described first angle is θ, and 70 °≤θ≤90 °.
6. the liquid crystal lens according to any one of claim 1 to 5, is characterized in that: each described first electrode incline is arranged on described first substrate, and the bearing of trend of described first electrode is crossing with the arragement direction of described first electrode, forms the second angle.
7. liquid crystal lens as claimed in claim 6, is characterized in that: described second angle α, and 60 °≤α≤80 °.
8. liquid crystal lens as claimed in claim 1, it is characterized in that: described display mode comprises 3D pattern and 2D display mode, when described liquid crystal lens is in described 3D display mode, described control module applies driving voltage to the first electrode described in each, described driving voltage drives described liquid crystal deflecting element, to form array arrangement and the identical liquid crystal lens unit of structure between described first substrate with described second substrate, liquid crystal lens unit described in each is to there being multiple described first electrode, adjacent two described liquid crystal lens units shareds described first electrode.
9. liquid crystal lens as claimed in claim 8, it is characterized in that: described second electrode is strip electrode and is arranged at intervals with multiple, the bearing of trend of described second electrode is parallel to the bearing of trend of described first electrode.
10. liquid crystal lens as claimed in claim 9, it is characterized in that: between adjacent two described second electrodes, form peristome, the center line of described peristome corresponding thereto and the center line being positioned at described first electrode at described liquid crystal lens cell edges place on same straight line.
11. liquid crystal lens as claimed in claim 10, is characterized in that: the width of described peristome is l
1, the width of described first electrode corresponding with described peristome is b
1, and l
1≤ 2b
1.
12. liquid crystal lens as claimed in claim 11, is characterized in that: described in corresponding each of described liquid crystal lens unit, the width of the first electrode is equal, and the distance between adjacent two described first electrodes is l
2, and l
2≤ 1.5b
1.
13. liquid crystal lens as claimed in claim 8, is characterized in that: described second electrode is face electrode.
14. 3 d display devices, comprise 3 d display device, comprise display panel, it is characterized in that: also comprise the liquid crystal lens according to any one of claim 1 to 13, and described liquid crystal lens is arranged at the light emission side of described display panel.
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|---|---|---|---|
| CN201520498790.0U CN204807881U (en) | 2015-07-10 | 2015-07-10 | Liquid crystal lens and stereoscopic display device |
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|---|---|---|---|
| CN201520498790.0U CN204807881U (en) | 2015-07-10 | 2015-07-10 | Liquid crystal lens and stereoscopic display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024404A1 (en) * | 2018-08-01 | 2020-02-06 | 深圳市华星光电半导体显示技术有限公司 | Mask plate, and manufacturing method for flexible liquid crystal display panel |
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2015
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020024404A1 (en) * | 2018-08-01 | 2020-02-06 | 深圳市华星光电半导体显示技术有限公司 | Mask plate, and manufacturing method for flexible liquid crystal display panel |
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