CN104049433A - Liquid crystal lens array, stereoscopic display device and drive method - Google Patents
Liquid crystal lens array, stereoscopic display device and drive method Download PDFInfo
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- CN104049433A CN104049433A CN201410289540.6A CN201410289540A CN104049433A CN 104049433 A CN104049433 A CN 104049433A CN 201410289540 A CN201410289540 A CN 201410289540A CN 104049433 A CN104049433 A CN 104049433A
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Abstract
The invention relates to the technical field of auto-stereoscopic display, in particular to a liquid crystal lens array, a stereoscopic display device and a drive method. The liquid crystal lens array comprises a plurality of lens units. Each lens unit comprises a first substrate and a second substrate. The side surface of each first substrate is covered with a first dielectric layer, the side surface of each first dielectric layer is provided with a first horizontal alignment film, and a first electrode and a second electrode are arranged between each first substrate and the corresponding first horizontal alignment film. Each second substrate is covered with a second horizontal alignment film, the difference between the friction direction of each second horizontal alignment film and the friction direction of the corresponding first horizontal alignment film is 180 degrees, and the side surface of each second substrate is covered with a third electrode. A first liquid crystal layer is arranged between each first substrate and the corresponding second substrate in a packaging mode. By means of the liquid crystal lens array, the stereoscopic display device and the drive method, high-resolution 3D images can be observed based on the effect of persistence of vision of human eyes.
Description
Technical field
The present invention relates to free 3 D display technology field, in particular to liquid crystal lens array, 3 d display device and driving method.
Background technology
In 3D stereo display technique, bore hole 3D, because just can watch the advantage in convenience and the application of 3D effect without other utility appliance, becomes the center of gravity of 3D display technique research.In various bore hole 3D display techniques, the auto-stereoscopic display device that adopts liquid crystal lens and liquid crystal slit grating is subject to extensive concern because of distinctive advantage separately.
The 3 d display device that adopts liquid crystal lens to realize, mainly to utilize, on two plate bases of liquid crystal layer both sides, positive and negative electrode is set respectively, and on Different electrodes, apply the driving voltage varying in size, thereby between two plate bases, form the vertical electric field with varying strength, form varifocal liquid crystal lens to drive Liquid Crystal Molecules Alignment.Therefore, the voltage that only need to control in respective electrode distributes, and the index distribution of liquid crystal lens will change accordingly, thereby the distribution of pixel emergent light is controlled, and realizes free stereo demonstration and 2D/3D and freely switches.
As Fig. 1 shows a kind of structural representation of common liquid crystal lens 3 d display device.As shown in Figure 1, existing liquid crystal lens 3 d display device 100 comprises two parts, and wherein Part I 120 is conventional 2D display device, as LCD, OLED etc.; Part II 110 is for being placed in 2D display device 120 liquid crystal lens array 110 before, and both generally paste by periphery or whole attaching process fits together formation auto-stereoscopic display device.Particularly, liquid crystal lens array 110 comprises multiple liquid crystal lens unit (as L1 and L2, only having drawn two lens units as example in figure), and each lens unit (as L1 and L2) has identical structure.Liquid crystal lens array 110 comprises first substrate 101 and second substrate 102, and first substrate 101 and second substrate 102 are just to arranging.On first substrate 101, be provided with the first electrode 103, on second substrate 102, be provided with the second electrode 107.Within each lens unit, taking L1 as example, the first electrode 103 comprise S11, S12, S13 ..., multiple strip electrodes that separate at certain intervals and be arranged in parallel such as S18, S19, the quantity of electrode is generally odd number (describing as an example of nine electrodes example below), the width of each strip electrode be respectively W (S11), W (S12), W (S13) ..., W (S18), W (S19) etc.Generally speaking, strip electrode possesses identical width, i.e. W (S11)=W (S12)=W (S13)=...=W (S18)=W (S19).Share same strip electrode S19 (S21) in joint, two liquid crystal lens unit (between L1 and L2).Further, liquid crystal lens array 110 also comprises the dielectric layer 104 being arranged on the first electrode 103; Be arranged on the second alignment film 108 on the second electrode 107 and be arranged on the first alignment film 105 on dielectric layer 104 for controlling the orientation of liquid crystal molecule, wherein the first alignment film 105 is parallel with the frictional direction of the second alignment film 108, and liquid crystal material 106 is encapsulated between first substrate 101 and second substrate 102.
As shown in Figure 1, in the time that needs carry out 2D demonstration, make liquid crystal lens array 110 in off working state, or make voltage difference between the first electrode 103 and the second electrode 107 be less than the threshold voltage of liquid crystal material 106, now the molecular orientation of liquid crystal material 106 is still initial orientation.(be △ ε=ε ∥-ε ⊥ >0 with positivity liquid crystal material, in formula, ε ∥ is the dielectric coefficient of long axis of liquid crystal molecule direction, ε ⊥ is the dielectric coefficient of liquid crystal molecule short-axis direction) be example, the major axis of all liquid crystal molecules is regularly arranged along the direction that is parallel to paper.From the light of 2D display panel outgoing, after impinging perpendicularly on liquid crystal layer 106, there is no optical path difference, also do not reflect, what therefore audience saw is still 2D picture, due to the high permeability of liquid crystal lens array 110, whole liquid crystal lens 3 d display device 100 still possesses the feature such as high brightness, high contrast, and the optical characteristics of former 2D display device 120 is substantially unaffected.
As shown in Figure 2, in the time that needs carry out 3D demonstration, at each strip electrode of the first electrode 103 of liquid crystal lens array 110 as S11, S12, S13, S18, on S19 (taking lens unit L1 as example) etc., apply symmetrical voltage, the second electrode 107 as public power extremely voltage be set to zero, taking positivity liquid crystal material as example, can make V (S11)=V (S19) >V (S12)=V (S18) >V (S13)=V (S17) >V (S14)=V (S16) >V (S15), the voltage minimum applying on the central electrode S15 of liquid crystal lens unit, and at the edge electrodes S11 of lens unit, the voltage maximum applying on S19, voltage from lens center to rims of the lens on each strip electrode distributes with certain gradient.Due to the voltage maximum applying on lens unit edge electrodes, the liquid crystal molecule corresponding with edge electrodes S11 and S19 position substantially presents vertical direction and distributes, and less the closer to the center voltage of lens unit, therefore liquid crystal molecule can tend to horizontal direction arrangement gradually.In each lens unit, because voltage symmetry distributes, liquid crystal material is along with the variation of electric field intensity presents the gradual change of refractive index, thereby whole liquid crystal lens array 110 forms multiple lenticules, to reflect light splitting from the light of 2D display device 120, the image of right and left eyes is projected to respectively to audience's left eye and right eye, thereby produces stereopsis.Taking two viewpoints in Fig. 2 as example, when distributing, audience's right and left eyes is positioned at 1 and can see stereopsis when 2 position.
As Fig. 3, for common liquid crystal lens 3 d display device, because audience's right and left eyes corresponds respectively to the left and right two width images of cutting apart in space, in the time that each liquid crystal lens unit of liquid crystal lens array 110 and the row pixel of 2D display device 120 arrange according to certain angle θ, for utilizing the left and right two width image co-registration that space is cut apart to obtain 3D image, this 3 d display device has all been sacrificed certain resolution in x direction or y direction.
Summary of the invention
The object of the present invention is to provide liquid crystal lens array, 3 d display device and driving method, to solve the above problems.
A kind of liquid crystal lens array is provided in an embodiment of the present invention, has comprised: multiple lens units; Described lens unit comprises: first substrate and second substrate, and described first substrate and described second substrate just arrange interval; The short transverse of wherein setting described lens unit is z direction, and vertical with z direction and parallel with the width of described lens unit direction is x direction, and the other direction vertical with z direction is y direction; Described first substrate is just to being coated with the first dielectric layer on the side of described second substrate; Described the first dielectric layer is provided with the first horizontal alignment film on the side of described first substrate dorsad, and the frictional direction of described the first horizontal alignment film is parallel with the polarization direction of 2D display device emergent light; Between described first substrate and described the first horizontal alignment film, be also provided with the first electrode and the second electrode; Described the first electrode comprises two strip electrodes, and these two strip electrodes are uniformly-spaced arranged side by side in the x-direction and extended in the y-direction, and spacing between these two strip electrodes equates with the width of described lens unit; Described the second electrode is strip electrode, and this strip electrode extends in the y-direction and the spacing of two strip electrodes comprising with described the first electrode equates; Described second substrate is just to being coated with the second horizontal alignment film on the side of described first substrate, the frictional direction of the frictional direction of described the second horizontal alignment film and described the first horizontal alignment film differs 180 degree; Described second substrate is just to being also provided with third electrode on the side of described first substrate; Described third electrode is between described second substrate and described the second horizontal alignment film; Between described first substrate and described second substrate, be packaged with the first liquid crystal layer, the long axis direction of the liquid crystal molecule of described the first liquid crystal layer is parallel with x direction.
Preferably, described the first electrode is positioned at described first substrate just on the side of described second substrate; Described the second electrode is positioned at described the first dielectric layer dorsad on the side of described first substrate.
Preferably, described the first electrode and described the second electrode are all positioned at described first substrate just on the side of described second substrate.
Preferably, described third electrode is face electrode.
Preferably, described third electrode comprises that multiple strip electrodes and its quantity are odd number; The plurality of strip electrode is uniformly-spaced arranged side by side in the x-direction and is extended in the y-direction, and two strip electrodes that the plurality of strip electrode is positioned at both sides are relative with the position of two strip electrodes of described the first electrode respectively, and the strip electrode that multiple strip electrodes that described third electrode comprises are positioned at centre position is relative with described the second bar shaped electrode position.
The embodiment of the present invention also provides a kind of 3 d display device, comprises 2D display device and above-mentioned liquid crystal lens array, the described first substrate perimeter bond of described 2D display device and described liquid crystal lens array or whole laminating.
The embodiment of the present invention also provides a kind of driving method of above-mentioned 3 d display device, comprising: on the third electrode of liquid crystal lens array, apply the first voltage; Within the first frame frequency working time, on the first electrode of described liquid crystal lens array, apply driving voltage, on described the second electrode, apply second voltage, the first liquid crystal layer of described liquid crystal lens array forms the first microlens array under the driving of described driving voltage; Within the second frame frequency working time, on the first electrode of described liquid crystal lens array, apply second voltage, on the second electrode of described lens arra, apply driving voltage, the first liquid crystal layer of described liquid crystal lens array forms the second microlens array under the driving of described driving voltage; Within the continuous frame frequency working time, alternately the first electrode and the second electrode to described microlens array applies respectively driving voltage and second voltage according to the method described above.
Preferably, on described the first electrode or described the second electrode, applying driving voltage comprises: within the overvoltage drive time of described the first frame frequency working time and described the second frame frequency working time, apply overvoltage driving voltage respectively on described the first electrode and described the second electrode; In the voltage stabilizing driving time of described the first frame frequency working time and described the second frame frequency working time, on described the first electrode and described the second electrode, apply voltage stabilizing driving voltage respectively.
Preferably, described first voltage that applies on the third electrode of liquid crystal lens array, comprise: in the time that described third electrode comprises that multiple strip electrodes and its quantity are odd number, within the overvoltage drive time of described the first frame frequency working time, described third electrode just to the strip electrode of described the first electrode on apply described overvoltage driving voltage, on all the other strip electrodes of described third electrode, apply second voltage; Within the overvoltage drive time of described the second frame frequency working time, described third electrode just to the strip electrode of described the second electrode on apply described overvoltage driving voltage, on all the other strip electrodes of described third electrode, apply second voltage; In the voltage stabilizing driving time of each working frame frequency, on all strip electrodes of described third electrode, all apply second voltage.
Preferably, in the time that the frequency of operation of the 2D of described 3 d display device display device is greater than the frequency of operation of described liquid crystal lens array, within the overvoltage drive time of each frame frequency working time, described 2D display device is carried out to black plug or Plug Grey; In the voltage stabilizing driving time of each frame frequency working time, show corresponding left and right time difference map picture.
Liquid crystal lens array, 3 d display device and driving method that the embodiment of the present invention provides, within the first frame frequency working time of liquid crystal lens array, form the first microlens array, the first width horizontal parallax image that now 2D display device shows, after the first microlens array light splitting, the first width horizontal parallax image is refracted to respectively to audience's right and left eyes.Within the second frame frequency working time of liquid crystal lens array, form the second microlens array, the second microlens array compare the first microlens array in the translation of x direction half lenticule cell width, the second width horizontal parallax image (R2 that now 2D display device shows, L2), through after the second microlens array, the second width horizontal parallax image is refracted to respectively to audience's right and left eyes; In the time that the first microlens array and the second microlens array switch under high frequency, the right and left eyes anaglyph row figure of collocation 2D display device, utilizes human eye vision to persist effect and can observe high-resolution 3D image.
Brief description of the drawings
Fig. 1 shows the structural representation of liquid crystal lens 3 d display device in prior art;
Fig. 2 shows the lens light splitting schematic diagram under liquid crystal lens 3 d display device 3D pattern in prior art;
Fig. 3 shows liquid crystal lens 3 d display device 3D in prior art and shows schematic diagram;
Fig. 4 shows a kind of sectional view of liquid crystal lens array in the embodiment of the present invention;
Fig. 5 shows first substrate and second substrate top electrode distribution schematic diagram in the liquid crystal lens array in Fig. 4;
Fig. 6 shows in the embodiment of the present invention liquid crystal molecule when liquid crystal lens array forms the first lenticule unit and points to distribution schematic diagram;
Fig. 7 shows in the embodiment of the present invention optical path difference distribution schematic diagram when liquid crystal lens array forms the first lenticule unit;
Fig. 8 shows in the embodiment of the present invention liquid crystal molecule when liquid crystal lens array forms the second lenticule unit and points to distribution schematic diagram;
Fig. 9 shows in the embodiment of the present invention optical path difference distribution schematic diagram when liquid crystal lens array forms the second lenticule unit;
Figure 10 shows liquid crystal lens array driving voltage in the embodiment of the present invention schematic diagram is set;
Figure 11 shows in the embodiment of the present invention optical path difference distribution schematic diagram of two continuous frames image in liquid crystal lens array;
Figure 12 shows liquid crystal lens array driving voltage in the embodiment of the present invention medium-high frequency 2D display device schematic diagram is set;
Figure 13 shows the another kind of sectional view of liquid crystal lens array in the embodiment of the present invention;
The 3 d display device that Figure 14 shows in the embodiment of the present invention is realized the schematic diagram that 2D shows;
3D light splitting schematic diagram when Figure 15 shows 3 d display device in the embodiment of the present invention and forms the first microlens array;
3D light splitting schematic diagram when Figure 16 shows 3 d display device in the embodiment of the present invention and forms the second microlens array.
Embodiment
Also by reference to the accompanying drawings the present invention is described in further detail below by specific embodiment.
The embodiment of the present invention provides a kind of liquid crystal lens array, as shown in Figure 4, this liquid crystal lens 1000 comprises that multiple liquid crystal microlenses unit is (as L1, L2 and L3 etc., in figure, only draw three lenticule unit as example), each lenticule unit (as L1, L2 and L3 etc.) has identical structure.
As shown in Figure 4, liquid crystal lens unit comprises first substrate 1001 and second substrate 1002.First substrate 1001 just arranges interval with second substrate 1002, and particularly, first substrate 1001 can be the transparent bases such as glass with second substrate 1002, and each substrate has identical or close refractive index.
In Fig. 4, the short transverse of setting lens unit is z direction, and vertical with z direction and parallel with the width of lens unit direction is x direction, and the other direction vertical with z direction is y direction;
Be provided with the first electrode 1003 at first substrate 1001 on just to the side of second substrate, the first electrode 1003 comprises two strip electrodes, these two strip electrodes 1003 are uniformly-spaced arranged side by side in the x-direction and are extended in the y-direction, and the spacing between these two strip electrodes equates with the width of lens unit, preferably, the first electrode 1003 is generally transparent conductive material as ITO or IZO etc.Shown in Fig. 5, taking liquid crystal microlens unit L1 as example, the first electrode 1003 comprises 10031 and 10032, in liquid crystal microlens unit L2, the first electrode 1003 comprises 10032 and 10033, the first electrode 1003 comprises 10033 and 10034 in liquid crystal microlens unit L3, at the shared same electrode of intersection of each lens unit as 10032 and 10033 etc.
On the first electrode 1003, being provided with the first dielectric layer 1004, the first dielectric layers 1004 can be silicon nitride or monox etc.On the first dielectric layer 1004, be provided with the second electrode 1005, the second electrodes 1005 and be generally transparent conductive material as ITO or IZO etc., the strip electrode of each second electrode 1005 for separating at certain intervals in x direction and extending along y direction.Shown in Fig. 5, taking liquid crystal microlens unit L1 as example, the second electrode 1005 comprises 10051, and electrode 10051 is positioned in the middle of the first electrode 10031 and 10032; In liquid crystal microlens unit L2, the second electrode 1005 comprises 10052, and electrode 10052 is positioned in the middle of the first electrode 10032 and 10033; In liquid crystal microlens unit L3, the second electrode 1005 comprises 10053, and electrode 10053 is positioned in the middle of the first electrode 10033 and 10034.Generally speaking, the first electrode 1003 has identical width and interval with each strip electrode of the second electrode 1005, the width that is spaced apart a lenticule unit between each first electrode 1003, the interval between each second electrode 1005 is also a lenticule cell width.
On the second electrode 1005, be provided with the first horizontal alignment film 1006, the first horizontal alignment film 1006 can be the organic materials such as polyimide, be used for controlling liquid crystal molecular orientation, the frictional direction of the first horizontal alignment film 1006 is parallel with the polarization direction of 2D display device emergent light, be assumed to be ± x direction.
Second substrate 1002 is just to being provided with third electrode 1007 on the side of first substrate 1001, and third electrode 1007 can face electrode can be also the electrode group that comprises multiple strip electrodes.
Wherein in the time that third electrode 1007 is face electrode, it can be that the transparent conductive material of whole is as ITO or IZO etc.
When third electrode is while comprising the electrode group of multiple strip electrodes, multiple strip electrode quantity that third electrode comprises are odd number, and the plurality of strip electrode uniformly-spaced arranges in the x-direction side by side, and extend in the y-direction.As shown in Figure 5, taking liquid crystal microlens unit L1 as example, third electrode 1007 comprises multiple electrodes such as strip electrode 711, strip electrode 712, strip electrode 713, strip electrode 714 and strip electrode 715, strip electrode 711 is positioned at directly over the first electrode 10031, electrode 715 is positioned at directly over the first electrode 10032, electrode 713 is positioned at directly over the second electrode 10051, in each lens unit the number of electrodes of third electrode 1007 general >=5.
On third electrode 1007, be provided with the second horizontal alignment film 1008, the second horizontal alignment film 1008 can be the organic materials such as polyimide, be used for controlling liquid crystal molecular orientation, the frictional direction antiparallel of the frictional direction of the second horizontal alignment film 1008 and the first horizontal alignment film 1006 arranges, and differs 180 degree.The first liquid crystal layer 1009 is encapsulated between first substrate 1001 and second substrate 1002, and the first liquid crystal layer 1009 is that positivity liquid crystal material (is △ ε=ε ∥-ε ⊥ >0, in formula, ε ∥ is the dielectric coefficient of long axis of liquid crystal molecule direction, and ε ⊥ is the dielectric coefficient of liquid crystal molecule short-axis direction.), under the effect of the first horizontal alignment film 1006 and the second horizontal alignment film 1008, the long axis of liquid crystal molecule of the first liquid crystal layer 1009 is along being parallel to x direction orientation.
In addition,, although do not draw in Fig. 4, liquid crystal lens 1000 also comprises between first substrate 1001 and second substrate 1002 for encapsulating the periphery sealed plastic box of the first liquid crystal layer 1009 and for controlling the spacer that liquid crystal cell is thick (spacer) etc.
A kind of 3 d display device is also provided in the embodiment of the present invention, and this 3 d display device comprises 2D display device and above-mentioned liquid crystal lens array, first substrate perimeter bond or whole the laminating of 2D display device and above-mentioned liquid crystal lens array.
For the driving method of above-mentioned 3 d display device, as shown in Figure 6, on third electrode 1007, apply voltage Vref, at each strip electrode (10051 of the second electrode 1005,10052,10053 etc.) on, also apply voltage Vref, on each strip electrode of the first electrode 1003, apply one can make the first liquid crystal layer 1009 both sides produce the driving voltage of certain pressure reduction time, near near the liquid crystal molecule both sides the first electrode 1003, owing to there being larger pressure reduction, long axis of liquid crystal molecule orientation is arranged along z direction substantially.More approach RuL1 center, lenticule unit, liquid crystal molecule both sides pressure reduction is less, and long axis of liquid crystal molecule orientation is arranged along x direction substantially.From each lenticule cell edges to lenticule center, liquid crystal molecular orientation is transition gradually, forms the first microlens array.
As shown in Figure 7, due within each lenticule unit, because of the gradually changed refractive index of the first liquid crystal layer 1009, the first microlens array has produced corresponding optical path difference and has distributed.
As shown in Figure 8, on third electrode 1007, apply voltage Vref, each strip electrode voltage of the first electrode 1003 is also set to Vref, when each strip electrode (10051 of the second electrode 1005,10052,10053 etc.) on, apply one can make the first liquid crystal layer 1009 both sides produce the driving voltage of certain pressure reduction time, near near the liquid crystal molecule both sides the second electrode 1005, owing to there being larger pressure reduction, long axis of liquid crystal molecule orientation is arranged along z direction substantially.More approach lenticule unit as L1 ' center, liquid crystal molecule both sides pressure reduction is less, and long axis of liquid crystal molecule orientation is arranged along x direction substantially.From each lenticule cell edges to lenticule center, liquid crystal molecular orientation is transition gradually, forms the second microlens array.Compared with the first microlens array, the second microlens array in x direction translation half lenticule width.
As shown in Figure 9, due within each lenticule unit, because of the gradually changed refractive index of the first liquid crystal layer 1009, the second microlens array has produced corresponding optical path difference and has distributed.
The drive principle of the 3 d display device based on above-mentioned, also provides a kind of driving method of 3 d display device in the embodiment of the present invention, concrete treatment step comprises:
On the third electrode of liquid crystal lens array, apply the first voltage;
Within the first frame frequency working time, on the first electrode of described liquid crystal lens array, apply driving voltage, on described the second electrode, apply second voltage, the first liquid crystal layer of described liquid crystal lens array forms the first microlens array under the driving of described driving voltage;
Within the second frame frequency working time, on the first electrode of described liquid crystal lens array, apply second voltage, on the second electrode of described lens arra, apply driving voltage, the first liquid crystal layer of described liquid crystal lens array forms the second microlens array under the driving of described driving voltage;
Within the continuous frame frequency working time, alternately the first electrode and the second electrode to described microlens array applies respectively driving voltage and second voltage according to the method described above.
As shown in figure 10, within the first frame frequency working time, establishing for the first frame frequency working time is 0～8.3ms, and wherein the first frame frequency working time was divided into again overvoltage drive time t1 and voltage stabilizing driving time t2; The t1 time period applies overvoltage driving voltage V1 on the first electrode 1003, the switching time being orientated to x direction from z direction orientation to shorten liquid crystal molecule by overvoltage drive, the t2 time period applies voltage stabilizing driving voltage V2 on the first electrode 1003, makes the first liquid crystal layer form the first microlens array; Within the first frame frequency working time (t1+t2), third electrode 1007 has identical voltage with the second electrode 1005 and is provided as reference voltage; Within the second frame frequency time,, in 8.3～16.6ms, on inherent the second electrode 1005 of t1 time period, apply an overvoltage driving voltage V1, the switching time being orientated to x direction from z direction orientation to shorten liquid crystal molecule by overvoltage drive; Then within the t2 time period, on the second electrode 1005, apply voltage stabilizing driving voltage V2, make the first liquid crystal layer form the second microlens array; Within the second frame frequency time (t1+t2), third electrode 1007 has identical voltage with the first electrode 1003.
Within the continuous frame frequency working time, alternately the first electrode and the second electrode to described microlens array applies respectively driving voltage and second voltage according to the method described above, for example, in the 3rd frame frequency working time, according to the type of drive in the first frame frequency working time, 3 d display device is applied to voltage, within the 4th frame frequency working time, according to the type of drive in the second frame frequency working time, 3 d display device is applied to voltage.
For the third electrode 1007 forming with multiple strip electrodes, for accelerating the switching of liquid crystal lens between the first microlens array and the second microlens array, can be in the time of the overvoltage drive of each frame frequency working time t1, on the counter electrode of third electrode 1007, give certain driving voltage simultaneously, for example, in the overvoltage drive time of the first frame frequency working time t1, just to the first electrode 1003 (10031, 10032, 10033, 10034 etc.) third electrode 711, 721, in 731 grades, apply identical overvoltage driving voltage V1, and voltage on other strip electrode of third electrode and the voltage of the second electrode 1005 are reference voltage V ref, in the overvoltage drive time of the second frame frequency working time t1, just to the second electrode 1005 (10051,10052,10053 etc.) third electrode 713,723, in 733 grades, apply identical overvoltage driving voltage V1, and voltage on voltage and the first electrode 1003 on other strip electrode of third electrode is reference voltage V ref.
And in the voltage stabilizing working time t2 of each frame frequency, the voltage of all strip electrodes of third electrode 1007 must return to normal reference voltage V ref.
As shown in figure 11, in the time that liquid crystal lens arranges according to above-mentioned driving voltage, in adjacent two continuous frames, form the first microlens array optical path difference and distribute and 1. distributes 2. with the second microlens array optical path difference, the optical path difference of adjacent two frames formation is distributed in x direction and differs the width of half lenticule unit.
As shown in figure 12, the 2D display panel adopting when liquid crystal lens 3 d display device with higher frame frequency as 240Hz work and liquid crystal lens while working with 120Hz, in overvoltage drive time t1 within each frame frequency working time of liquid crystal lens, 2D display device is carried out to black plug or Plug Grey, crosstalk to reduce; In the voltage stabilizing driving time of each frame frequency working time, in 2D display device, show corresponding left and right time difference map picture, for example, in the voltage stabilizing driving time of the first frame frequency working time, 2D display device shows the first width horizontal parallax image (L1 and R1); In the voltage stabilizing driving time of the second frame frequency working time, 2D display device shows the second width horizontal parallax image (L2 and R2).
Figure 13 is the sectional view of another kind of liquid crystal lens 2000 in the embodiment of the present invention, in this embodiment, the first electrode and the second electrode are all positioned at first substrate 2001 just on the side of second substrate 2002, i.e. 2003 in figure, each strip electrode 2003 equals half lenticule cell width and extends along y direction at x direction interval.On the first electrode and the second electrode, be provided with dielectric layer 2004, the frictional direction that is provided with the first horizontal alignment film 2006, the first horizontal alignment films 2006 on dielectric layer 2004 is parallel with the polarization direction of 2D display device emergent light; Second substrate 2002 just to the side of first substrate 2001 on be provided with second frictional direction of horizontal alignment film 2008, the second horizontal alignment films 2008 and the frictional direction of the first horizontal alignment film 2006 differs 180 degree; Second substrate 2002 is just to being also provided with third electrode 2007 on the side of first substrate 2001; Third electrode 2007 is between second substrate 2002 and the second horizontal alignment film 2008; The long axis direction of liquid crystal molecule that is packaged with the first liquid crystal layer 2009, the first liquid crystal layers 2009 between first substrate 2001 and second substrate 2002 is parallel with x direction.
As Figure 13, in the time forming the first lenticule unit, can on the odd number strip electrode of electrode 2003, apply corresponding driving voltage; While forming the second lenticule unit, can on the even number strip electrode of electrode 2003, apply corresponding driving voltage, driving voltage set-up mode can be with reference to Figure 10 and Figure 12.
For the 3 d display device of the embodiment of the present invention, as Figure 14, in the time that needs carry out 2D demonstration, make the poor existence of no-voltage between the first electrode 1003, the second electrodes 1005 and third electrode 1007, the liquid crystal molecule of the first liquid crystal layer 1009 maintains its initial orientation.For the first liquid crystal layer 1009, enter the first liquid crystal layer 1009 rear polarizer directions from the linearly polarized light of 2D display device 1200 outgoing constant, also do not reflect after liquid crystal lens from the light of 2D display device 1200 outgoing, the optical characteristics of former 2D display device 1200 is substantially unaffected, still has the characteristic such as higher brightness and contrast.
As shown in figure 15, in the time that needs carry out 3D demonstration, within the first frame frequency working time of liquid crystal lens array, form the first microlens array, the first width horizontal parallax image (L1 that now 2D display device shows, R1), after the first microlens array light splitting, the first width horizontal parallax image is refracted to respectively to audience's right and left eyes.
As shown in figure 16, within the second frame frequency working time of liquid crystal lens array, form the second microlens array, the second microlens array compare the first microlens array in the translation of x direction half lenticule cell width, the second width horizontal parallax image (R2 that now 2D display device shows, L2), through after the second microlens array, the second width horizontal parallax image is refracted to respectively to audience's right and left eyes; In the time that the first microlens array and the second microlens array switch under high frequency, the right and left eyes anaglyph row figure of collocation 2D display device, utilizes human eye vision to persist effect and can observe high-resolution 3D image.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a liquid crystal lens array, is characterized in that, comprising: multiple lens units;
Described lens unit comprises: first substrate and second substrate, and described first substrate and described second substrate just arrange interval; The short transverse of wherein setting described lens unit is z direction, and vertical with z direction and parallel with the width of described lens unit direction is x direction, and the other direction vertical with z direction is y direction;
Described first substrate is just to being coated with the first dielectric layer on the side of described second substrate; Described the first dielectric layer is provided with the first horizontal alignment film on the side of described first substrate dorsad, and the frictional direction of described the first horizontal alignment film is parallel with the polarization direction of 2D display device emergent light;
Between described first substrate and described the first horizontal alignment film, be also provided with the first electrode and the second electrode; Described the first electrode comprises two strip electrodes, and these two strip electrodes are uniformly-spaced arranged side by side in the x-direction and extended in the y-direction, and spacing between these two strip electrodes equates with the width of described lens unit; Described the second electrode is strip electrode, and this strip electrode extends in the y-direction and the spacing of two strip electrodes comprising with described the first electrode equates;
Described second substrate is just to being coated with the second horizontal alignment film on the side of described first substrate, the frictional direction of the frictional direction of described the second horizontal alignment film and described the first horizontal alignment film differs 180 degree;
Described second substrate is just to being also provided with third electrode on the side of described first substrate; Described third electrode is between described second substrate and described the second horizontal alignment film;
Between described first substrate and described second substrate, be packaged with the first liquid crystal layer, the long axis direction of the liquid crystal molecule of described the first liquid crystal layer is parallel with x direction.
2. liquid crystal lens array according to claim 1, is characterized in that, described the first electrode is positioned at described first substrate just on the side of described second substrate; Described the second electrode is positioned at described the first dielectric layer dorsad on the side of described first substrate.
3. liquid crystal lens array according to claim 1, is characterized in that, described the first electrode and described the second electrode are all positioned at described first substrate just on the side of described second substrate.
4. liquid crystal lens array according to claim 1, is characterized in that, described third electrode is face electrode.
5. liquid crystal lens array according to claim 1, is characterized in that, described third electrode comprises that multiple strip electrodes and its quantity are odd number; The plurality of strip electrode is uniformly-spaced arranged side by side in the x-direction and is extended in the y-direction, and two strip electrodes that the plurality of strip electrode is positioned at both sides are relative with the position of two strip electrodes of described the first electrode respectively, and the strip electrode that multiple strip electrodes that described third electrode comprises are positioned at centre position is relative with described the second bar shaped electrode position.
6. 3 d display device, is characterized in that, comprises 2D display device and the liquid crystal lens array as described in claim 1 to 5 any one, the described first substrate perimeter bond of described 2D display device and described liquid crystal lens array or whole laminating.
7. the driving method of 3 d display device as claimed in claim 6, is characterized in that, comprising:
On the third electrode of liquid crystal lens array, apply the first voltage;
Within the first frame frequency working time, on the first electrode of described liquid crystal lens array, apply driving voltage, on described the second electrode, apply second voltage, the first liquid crystal layer of described liquid crystal lens array forms the first microlens array under the driving of described driving voltage;
Within the second frame frequency working time, on the first electrode of described liquid crystal lens array, apply second voltage, on the second electrode of described lens arra, apply driving voltage, the first liquid crystal layer of described liquid crystal lens array forms the second microlens array under the driving of described driving voltage;
Within the continuous frame frequency working time, alternately the first electrode and the second electrode to described microlens array applies respectively driving voltage and second voltage according to the method described above.
8. method according to claim 7, is characterized in that, applies driving voltage and comprise on described the first electrode or described the second electrode:
Within the overvoltage drive time of described the first frame frequency working time and described the second frame frequency working time, on described the first electrode and described the second electrode, apply overvoltage driving voltage respectively;
In the voltage stabilizing driving time of described the first frame frequency working time and described the second frame frequency working time, on described the first electrode and described the second electrode, apply voltage stabilizing driving voltage respectively.
9. method according to claim 8, is characterized in that, described first voltage that applies on the third electrode of liquid crystal lens array, comprising:
In the time that described third electrode comprises that multiple strip electrodes and its quantity are odd number, within the overvoltage drive time of described the first frame frequency working time, described third electrode just to the strip electrode of described the first electrode on apply described overvoltage driving voltage, on all the other strip electrodes of described third electrode, apply second voltage;
Within the overvoltage drive time of described the second frame frequency working time, described third electrode just to the strip electrode of described the second electrode on apply described overvoltage driving voltage, on all the other strip electrodes of described third electrode, apply second voltage;
In the voltage stabilizing driving time of each working frame frequency, on all strip electrodes of described third electrode, all apply second voltage.
10. method according to claim 8, it is characterized in that, in the time that the frequency of operation of the 2D of described 3 d display device display device is greater than the frequency of operation of described liquid crystal lens array, within the overvoltage drive time of each frame frequency working time, described 2D display device is carried out to black plug or Plug Grey; In the voltage stabilizing driving time of each frame frequency working time, show corresponding left and right time difference map picture.
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| CN201410289540.6A CN104049433B (en) | 2014-06-25 | 2014-06-25 | Driving method of stereoscopic display device |
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Cited By (7)
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| CN104298023A (en) * | 2014-10-24 | 2015-01-21 | 华中科技大学 | Area array electric control liquid crystal light divergence micro-lens chip driven and controlled by double voltage signals |
| CN104494280A (en) * | 2015-01-09 | 2015-04-08 | 重庆卓美华视光电有限公司 | Liquid crystal cylindrical lens membrane peeling device |
| CN104849871A (en) * | 2015-06-15 | 2015-08-19 | 重庆卓美华视光电有限公司 | Manufacturing method for three-dimensional display module group of liquid crystal lens type |
| CN105116647A (en) * | 2015-08-11 | 2015-12-02 | 江西合力泰科技有限公司 | Dual-box naked-eye 3D (three-dimensional) LCD (Liquid Crystal Display) |
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| CN101840071A (en) * | 2010-05-13 | 2010-09-22 | 上海交通大学 | Three-dimensional monitor based on liquid crystal lens |
| CN202533687U (en) * | 2012-05-09 | 2012-11-14 | 京东方科技集团股份有限公司 | Liquid crystal lens and three-dimensional (3D) display device |
| CN204009311U (en) * | 2014-06-25 | 2014-12-10 | 重庆卓美华视光电有限公司 | Liquid crystal lens array and 3 d display device |
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| CN104298023A (en) * | 2014-10-24 | 2015-01-21 | 华中科技大学 | Area array electric control liquid crystal light divergence micro-lens chip driven and controlled by double voltage signals |
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| CN104849871A (en) * | 2015-06-15 | 2015-08-19 | 重庆卓美华视光电有限公司 | Manufacturing method for three-dimensional display module group of liquid crystal lens type |
| CN105116647A (en) * | 2015-08-11 | 2015-12-02 | 江西合力泰科技有限公司 | Dual-box naked-eye 3D (three-dimensional) LCD (Liquid Crystal Display) |
| CN110865472A (en) * | 2018-08-28 | 2020-03-06 | 电子科技大学 | Liquid crystal lens array device, imaging apparatus and imaging method |
| CN110865472B (en) * | 2018-08-28 | 2021-05-25 | 电子科技大学 | Liquid crystal lens array device, imaging apparatus and imaging method |
| CN112230443A (en) * | 2020-09-22 | 2021-01-15 | 深圳英伦科技股份有限公司 | Integrated imaging display device based on adjustable liquid crystal micro-lens array |
| CN112230443B (en) * | 2020-09-22 | 2024-02-13 | 深圳英伦科技股份有限公司 | Integrated imaging display device based on adjustable liquid crystal micro-lens array |
| CN113514988A (en) * | 2021-04-28 | 2021-10-19 | 南昌虚拟现实研究院股份有限公司 | Zoom liquid crystal lens and driving method thereof |
| CN113514988B (en) * | 2021-04-28 | 2022-09-13 | 南昌虚拟现实研究院股份有限公司 | Zoom liquid crystal lens and driving method thereof |
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