CN104049433B - Driving method of stereoscopic display device - Google Patents
Driving method of stereoscopic display device Download PDFInfo
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- CN104049433B CN104049433B CN201410289540.6A CN201410289540A CN104049433B CN 104049433 B CN104049433 B CN 104049433B CN 201410289540 A CN201410289540 A CN 201410289540A CN 104049433 B CN104049433 B CN 104049433B
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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 need not other auxiliary equipments just can watch 3d effect convenience and should
The advantage used, becomes the center of gravity of 3d Display Technique research.In various bore hole 3d Display Techniques, using liquid crystal lens and liquid crystal
The auto-stereoscopic display device of slit grating receives significant attention because of respective distinctive advantage.
The 3 d display device realized using liquid crystal lens, is mainly used on two plate bases of liquid crystal layer both sides respectively
Setting positive and negative electrode, and driving voltage of different sizes is applied on Different electrodes, thus formed between two plate bases having not
With the vertical electric field of intensity, to drive Liquid Crystal Molecules Alignment to form varifocal liquid crystal lens.Therefore it may only be necessary to control accordingly electricity
The voltage's distribiuting extremely gone up, the index distribution of liquid crystal lens will change accordingly, thus the distribution to pixel emergent light is carried out
Control, realize Auto-stereo display and 2d/3d free switching.
As Fig. 1 shows a kind of structural representation of common liquid crystal lens 3 d display device.As shown in figure 1, it is existing
Liquid crystal lens 3 d display device 100 comprise two parts, wherein Part I 120 is conventional 2d display device, such as
Lcd, oled etc.；Part II 110 is the liquid crystal lens array 110 being placed in before 2d display device 120, and both typically pass through week
Side is pasted or whole face attaching process fits together formation auto-stereoscopic display device.Specifically, liquid crystal lens array 110 wraps
Containing multiple liquid crystal lens units (such as l1 and l2, in figure only depicts two lens units as an example), each lens unit is (such as
L1 and l2) there is identical structure.Liquid crystal lens array 110 comprises first substrate 101 and second substrate 102, first substrate 101
With second substrate 102 just to setting.First electrode 103 is provided with first substrate 101, second substrate 102 is provided with
Second electrode 107.Within each lens unit, taking l1 as a example, first electrode 103 comprise s11, s12, s13 ..., s18,
Multiple strip electrode separating at certain intervals and be arrangeding in parallel such as s19, the quantity of electrode is generally odd number (below with nine electrodes
As a example illustrate), the width of each strip electrode be respectively w (s11), w (s12), w (s13) ..., w (s18), w (s19)
Deng.In general, strip electrode possesses identical width, that is, w (s11)=w (s12)=w (s13)=...=w (s18)=w
(s19).Share same strip electrode s19 (s21) in two liquid crystal lens unit joints (between l1 and l2).Further
Ground, liquid crystal lens array 110 also includes the dielectric layer 104 being arranged in first electrode 103；It is arranged in second electrode 107
Second alignment film 108 and the first alignment film 105 being arranged on dielectric layer 104 are used for controlling the orientation of liquid crystal molecule, wherein
First alignment film 105 is parallel with the frictional direction of the second alignment film 108, and liquid crystal material 106 is encapsulated in first substrate 101 and
Between two substrates 102.
As shown in figure 1, when needing to carry out 2d display, making liquid crystal lens array 110 be in off working state, or make the
Voltage difference between one electrode 103 and second electrode 107 is less than the threshold voltage of liquid crystal material 106, now liquid crystal material 106
Molecularly oriented is still initial orientation.With positivity liquid crystal material, (i.e. △ ε=ε ∥-ε ⊥ > 0, in formula, ε ∥ is long axis of liquid crystal molecule side
To dielectric coefficient, ε ⊥ is the dielectric coefficient of liquid crystal molecule short-axis direction) as a example, the major axis of all liquid crystal molecules is along parallel
Regularly arranged in the direction of paper.From the light of 2d display floater 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, entirely
Liquid crystal lens 3 d display device 100 still possesses the features such as high brightness, high contrast, the optical characteristics base of former 2d display device 120
This is unaffected.
As shown in Fig. 2 when needing to carry out 3d display, in each bar shaped of the first electrode 103 of liquid crystal lens array 110
Electrode as s11, s12, s13 ..., s18, s19 () etc. upper taking lens unit l1 as a example applies symmetrical voltage, second electrode
107 are set to zero as public power extremely voltage, can make v (s11)=v (s19) > v (s12) taking positivity liquid crystal material as a example
=v (s18) > v (s13)=v (s17) > v (s14)=v (s16) > v (s15), that is, on the central electrode s15 of liquid crystal lens unit
The voltage applying is minimum, and the edge electrodes s11 in lens unit, the voltage maximum that s19 applies, from lens centre to lens
Voltage on each strip electrode of edge is distributed with certain gradient.Due to the electricity applying on lens unit edge electrodes
Pressure is maximum, substantially assumes vertical direction distribution with the corresponding liquid crystal molecule of edge electrodes s11 and s19 position, and the closer to saturating
The center voltage of mirror unit is less, and therefore liquid crystal molecule can be increasingly prone to horizontal direction arrangement.In each lens unit,
Due to voltage symmetry distribution, liquid crystal material assumes the gradual change of refractive index with the change of electric field intensity, thus whole liquid crystal lens
Array 110 forms multiple lenticulees, the light from 2d display device 120 is carried out reflecting light splitting, the image of right and left eyes is divided
Do not project the left eye to audience and right eye, thus producing stereoscopic image.Taking two viewpoints in Fig. 2 as a example, when the left and right of audience
Eye distribution can see stereoscopic image when being located at 1 and 2 position.
As Fig. 3, for common liquid crystal lens 3 d display device, the right and left eyes due to audience correspond respectively to
The left and right two width image of space segmentation, when each liquid crystal lens unit of liquid crystal lens array 110 and the row of 2d display device 120
When pixel is arranged according to certain angle θ, it is that the left and right two width image co-registration of utilization space segmentation obtains 3d image, this stereo display
Device all sacrifices certain resolution in x direction or y direction.
Content of the invention
It is an object of the invention to provide liquid crystal lens array, 3 d display device and driving method, above-mentioned to solve
Problem.
Provide a kind of liquid crystal lens array in an embodiment of the present invention, comprising: multiple lens units；Described lens list
Unit includes: first substrate and second substrate, described first substrate and described second substrate are just to interval setting；Wherein set described
The short transverse of lens unit is z direction, and vertical with z direction and with the width parallel of described lens unit direction is x direction,
The other direction vertical with z direction is y direction；Described first substrate is coated with first Jie on the side just to described second substrate
Electric layer；Described first dielectric layer is dorsad provided with first level alignment films, described first level on the side of described first substrate
The frictional direction of alignment films is parallel with the polarization direction of 2d display device emergent light；Described first substrate and described first level take
It is additionally provided with first electrode and second electrode between film；Described first electrode includes two strip electrodes, this two bar shaped electricity
Arrange at equal intervals side by side in the x-direction and extend in the y-direction in pole, and the spacing between this two strip electrodes and described lens unit
Width equal；Described second electrode is strip electrode, and this strip electrode is extended in the y-direction and included with described first electrode
The spacing of two strip electrodes is equal；Described second substrate is coated with the second horizontal alignment on the side just to described first substrate
Film, the frictional direction of described second horizontal alignment film differs 180 degree with the frictional direction of described first level alignment films；Described
Two substrates are additionally provided with the 3rd electrode on the side just to described first substrate；Described 3rd electrode be located at described second substrate with
Between described second horizontal alignment film；It is packaged with the first liquid crystal layer between described first substrate and described second substrate, described
The long axis direction of the liquid crystal molecule of one liquid crystal layer is parallel with x direction.
Preferably, described first electrode is located on the side just to described second substrate for the described first substrate；Described second
Electrode is on described first the dielectric layer dorsad side of described first substrate.
Preferably, described first electrode and described second electrode are respectively positioned on described first substrate just to described second substrate
On side.
Preferably, described 3rd electrode is face electrode.
Preferably, described 3rd electrode includes multiple strip electrodes and its quantity is odd number；The plurality of strip electrode is along x side
To arranging at equal intervals side by side and extend in the y-direction, and the plurality of strip electrode be located at two strip electrodes of both sides respectively with institute
State the position of two strip electrodes of first electrode relatively, multiple strip electrodes that described 3rd electrode includes are centrally located
Strip electrode relative with described second bar shaped electrode position.
The embodiment of the present invention additionally provides a kind of 3 d display device, including 2d display device and above-mentioned liquid crystal lens battle array
Row, described 2d display device is fitted with the described first substrate perimeter bond of described liquid crystal lens array or whole face.
The embodiment of the present invention additionally provides a kind of driving method of above-mentioned 3 d display device, comprising: in liquid crystal lens
First voltage is applied on the 3rd electrode of array；Within the first frame frequency working time, in the first electricity of described liquid crystal lens array
Extremely upper applying driving voltage, applies second voltage, the first liquid crystal layer of described liquid crystal lens array exists in described second electrode
Form the first microlens array under the driving of described driving voltage；Within the second frame frequency working time, in described liquid crystal lens battle array
Apply second voltage in the first electrode of row, driving voltage is applied on the second electrode of described lens arra, described liquid crystal is saturating
First liquid crystal layer of lens array forms the second microlens array under the driving of described driving voltage；When continuous frame frequency works
Interior, alternately the first electrode to described microlens array and second electrode apply driving voltage and the respectively according to the method described above
Two voltages.
Preferably, driving voltage is applied on described first electrode or described second electrode to include: in described first frame frequency
In the overvoltage drive time of working time and described second frame frequency working time, respectively in described first electrode and described second electricity
Extremely upper applying overvoltage driving voltage；When the voltage stabilizing of described first frame frequency working time and described second frame frequency working time drives
Interior, voltage stabilizing driving voltage is applied respectively on described first electrode and described second electrode.
Preferably, described applying first voltage on the 3rd electrode of liquid crystal lens array, comprising: when described 3rd electrode
Including multiple strip electrodes and its quantity be odd number when, within the overvoltage drive time of described first frame frequency working time, in institute
Described overvoltage driving voltage applied on the strip electrode just to described first electrode stating the 3rd electrode, described 3rd electrode its
Second voltage is applied on remaining strip electrode；Within the overvoltage drive time of described second frame frequency working time, in the described 3rd electricity
Described overvoltage driving voltage, remaining bar shaped electricity of described 3rd electrode are applied on the strip electrode just to described second electrode of pole
Extremely upper applying second voltage；In the voltage stabilizing driving time of each working frame frequency, on all strip electrodes of described 3rd electrode
All apply second voltage.
Preferably, when the operating frequency of the 2d display device of described 3 d display device is more than described liquid crystal lens array
During operating frequency, within the overvoltage drive time of each frame frequency working time, black plug or Plug Grey are carried out to described 2d display device；
Corresponding left and right time difference map picture is shown in the voltage stabilizing driving time of each frame frequency working time.
Liquid crystal lens array provided in an embodiment of the present invention, 3 d display device and driving method, in liquid crystal lens array
First form the first microlens array, the first width horizontal parallax figure that now 2d display device shows in the frame frequency working time
Picture, after the first microlens array light splitting, the first width horizontal parallax image is refracted to respectively the right and left eyes of audience.In liquid
Form the second microlens array, the second microlens array compares the first lenticule in the second frame frequency working time of brilliant lens arra
Array is shifted half lenticule cell width in x direction, the second width horizontal parallax image that now 2d display device shows
(r2, l2), after the second microlens array, the second width horizontal parallax image is refracted to respectively the right and left eyes of audience；When
When first microlens array and the second microlens array switch in high frequency, the right and left eyes anaglyph row of collocation 2d display device
Figure, is observed that high-resolution 3d image using human eye vision persistence effect.
Brief description
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 display schematic diagram in prior art；
Fig. 4 shows a kind of profile of liquid crystal lens array in the embodiment of the present invention；
First substrate and second substrate Top electrode distribution schematic diagram in the liquid crystal lens array that Fig. 5 shows in Fig. 4；
When Fig. 6 shows that in the embodiment of the present invention, liquid crystal lens array forms the first lenticule unit, liquid crystal molecule points to and divides
Cloth schematic diagram；
When Fig. 7 shows that in the embodiment of the present invention, liquid crystal lens array forms the first lenticule unit, optical path difference distribution is illustrated
Figure；
When Fig. 8 shows that in the embodiment of the present invention, liquid crystal lens array forms the second lenticule unit, liquid crystal molecule points to and divides
Cloth schematic diagram；
When Fig. 9 shows that in the embodiment of the present invention, liquid crystal lens array forms the second lenticule unit, optical path difference distribution is illustrated
Figure；
Figure 10 shows liquid crystal lens array driving voltage setting schematic diagram in the embodiment of the present invention；
Figure 11 shows the optical path difference distribution schematic diagram of two continuous frames image in liquid crystal lens array in the embodiment of the present invention；
Figure 12 shows that in embodiment of the present invention medium-high frequency 2d display device, the setting of liquid crystal lens array driving voltage is illustrated
Figure；
Figure 13 shows another kind of profile of liquid crystal lens array in the embodiment of the present invention；
Figure 14 shows that the 3 d display device in the embodiment of the present invention realizes the schematic diagram that 2d shows；
3d light splitting when Figure 15 shows that the 3 d display device in the embodiment of the present invention forms the first microlens array is illustrated
Figure；
3d light splitting when Figure 16 shows that the 3 d display device in the embodiment of the present invention forms the second microlens array is illustrated
Figure.
Specific embodiment
Below by specific embodiment and combine accompanying drawing the present invention is described in further detail.
Embodiments provide a kind of liquid crystal lens array, as shown in figure 4, this liquid crystal lens 1000 includes multiple liquid
Crystal micro-lens unit (such as l1, l2 and l3 etc., in figure only depicts three lenticule units as an 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 and
Just to interval setting, specifically, first substrate 1001 and second substrate 1002 can be the transparent bases such as glass to two substrates 1002,
Each substrate has same or like refractive index.
In Fig. 4, set the short transverse of lens unit as z direction, vertical with z direction and with lens unit width is put down
The direction of row is x direction, and the other direction vertical with z direction is y direction；
First electrode 1003 is provided with the side just to second substrate for the first substrate 1001, first electrode 1003 includes
Two strip electrodes, this two strip electrodes 1003 are arranged at equal intervals side by side in the x-direction and are extended in the y-direction, and this two bars
Spacing between shape electrode is equal with the width of lens unit it is preferable that first electrode 1003 is generally transparent conductive material such as
Ito or izo etc..With reference to shown in Fig. 5, first electrode 1003 comprises 10031 and 10032 taking liquid crystal microlenses unit l1 as a example,
In liquid crystal microlenses unit l2, first electrode 1003 includes 10032 and 10033, first electrode 1003 in liquid crystal microlenses unit l3
Including 10033 and 10034, share same electrode such as 10032 and 10033 etc. in the intersection of each lens unit.
Be provided with the first dielectric layer 1004 on first electrode 1003, the first dielectric layer 1004 can be silicon nitride or
Silicon oxide etc..It is provided with second electrode 1005 on the first dielectric layer 1004, second electrode 1005 is generally electrically conducting transparent material
Material such as ito or izo etc., each second electrode 1005 is to separate at certain intervals and the bar shaped along the extension of y direction in x direction
Electrode.With reference to shown in Fig. 5, second electrode 1005 comprises 10051 taking liquid crystal microlenses unit l1 as a example, and electrode 10051 is located at the
In the middle of one electrode 10031 and 10032；In liquid crystal microlenses unit l2, second electrode 1005 includes 10052, and electrode 10052 is located at
In the middle of first electrode 10032 and 10033；In liquid crystal microlenses unit l3, second electrode 1005 includes 10053,10053, electrode
In the middle of first electrode 10033 and 10034.In general, each strip electrode of first electrode 1003 and second electrode 1005
There is identical width and interval, the width being spaced apart a lenticule unit between each first electrode 1003, each
Interval between two electrodes 1005 is also a lenticule cell width.
First level alignment films 1006 are provided with second electrode 1005, first level alignment films 1006 can be that polyamides is sub-
The organic materials such as amine, for controlling liquid crystal molecular orientation, the frictional direction of first level alignment films 1006 is gone out with 2d display device
The polarization direction penetrating light parallel it is assumed that being ± x direction.
Second substrate 1002 is provided with the 3rd electrode 1007 on the side just to first substrate 1001, the 3rd electrode 1007 can
Can also be the electrode group including multiple strip electrodes with face electrode.
Wherein when the 3rd electrode 1007 is face electrode, it can be transparent conductive material such as ito or izo in whole face
Deng.
When the electrode group that the 3rd electrode is including multiple strip electrodes, multiple strip electrode quantity that the 3rd electrode includes
For odd number, and the plurality of strip electrode is arranged, and extend in the y-direction in the x-direction side by side at equal intervals.As shown in figure 5, with liquid crystal
As a example lenticule unit l1, the 3rd electrode 1007 includes strip electrode 711, strip electrode 712, strip electrode 713, strip electrode
The multiple electrodes such as 714 and strip electrode 715, strip electrode 711 is located at directly over first electrode 10031, and electrode 715 is located at first
Directly over electrode 10032, electrode 713 is located at directly over second electrode 10051, the electricity of the 3rd electrode 1007 in each lens unit
Number of poles is general >=and 5.
It is provided with the second horizontal alignment film 1008 on the 3rd electrode 1007, the second horizontal alignment film 1008 can be poly-
The organic materials such as acid imide, for controlling liquid crystal molecular orientation, the frictional direction of the second horizontal alignment film 1008 and first level
The frictional direction antiparallel setting of alignment films 1006, that is, differ 180 degree.First liquid crystal layer 1009 is encapsulated in first substrate 1001
And second substrate 1002 between, and the first liquid crystal layer 1009 is that (i.e. △ ε=ε ∥-ε ⊥ > 0, in formula, ε ∥ is positivity liquid crystal material
The dielectric coefficient in long axis of liquid crystal molecule direction, ε ⊥ is the dielectric coefficient of liquid crystal molecule short-axis direction.), in first level alignment films
1006 and second in the presence of horizontal alignment film 1008, and the long axis of liquid crystal molecule of the first liquid crystal layer 1009 is along parallel to x direction
Orientation.
In addition although being not drawn in Fig. 4, liquid crystal lens 1000 also include first substrate 1001 and second substrate 1002
Between for the periphery sealed plastic box of encapsulation the first liquid crystal layer 1009 and for controlling thick spacer (spacer) of liquid crystal cell etc..
Additionally provide a kind of 3 d display device in the embodiment of the present invention, this 3 d display device include 2d display device and
Above-mentioned liquid crystal lens array, 2d display device is pasted with the first substrate perimeter bond of above-mentioned liquid crystal lens array or whole face
Close.
For the driving method of above-mentioned 3 d display device, as shown in fig. 6, applied voltage on the 3rd electrode 1007
Vref, also applied voltage vref on each strip electrode (10051,10052,10053 etc.) of second electrode 1005, first
One driving voltage that the first liquid crystal layer 1009 both sides can be made to produce certain pressure reduction is applied on each strip electrode of electrode 1003
When, due to there being larger pressure reduction, long axis of liquid crystal molecule is orientated basic edge to the liquid crystal molecule both sides near first electrode 1003
The arrangement of z direction.Closer to lenticule unit such as l1 center, liquid crystal molecule both sides pressure reduction is less, and long axis of liquid crystal molecule is orientated base
This is along the arrangement of x direction.From each lenticule cell edges to lenticule center, liquid crystal molecular orientation gradually transition, form the
One microlens array.
As shown in fig. 7, due within each lenticule unit, because of the gradually changed refractive index of the first liquid crystal layer 1009, first
Microlens array creates corresponding optical path difference distribution.
As shown in figure 8, on the 3rd electrode 1007 applied voltage vref, each strip electrode voltage of first electrode 1003
It is also configured as vref, one can make when the upper applying of each strip electrode (10051,10052,10053 etc.) of second electrode 1005
Liquid crystal molecule both sides when first liquid crystal layer 1009 both sides produce the driving voltage of certain pressure reduction, near second electrode 1005
Due to there being larger pressure reduction, long axis of liquid crystal molecule orientation is substantially along the arrangement of z direction.Closer to lenticule unit such as l1 ' center,
Liquid crystal molecule both sides pressure reduction is less, and long axis of liquid crystal molecule orientation is substantially along the arrangement of x direction.From each lenticule cell edges to
Lenticule center, liquid crystal molecular orientation gradually transition, form the second microlens array.Compared with the first microlens array, second
Microlens array is shifted half lenticule width in the x direction.
As shown in figure 9, due within each lenticule unit, because of the gradually changed refractive index of the first liquid crystal layer 1009, second
Microlens array creates corresponding optical path difference distribution.
Based on the driving principle of above-mentioned 3 d display device, in the embodiment of the present invention, additionally provide a kind of stereo display dress
The driving method put, concrete process step includes:
First voltage is applied on the 3rd electrode of liquid crystal lens array；
Within the first frame frequency working time, the first electrode of described liquid crystal lens array applies driving voltage, in institute
State in second electrode applying second voltage, the first liquid crystal layer of described liquid crystal lens array shape under the driving of described driving voltage
Become the first microlens array；
Within the second frame frequency working time, the first electrode of described liquid crystal lens array applies second voltage, in institute
State applying driving voltage in the second electrode of lens arra, the first liquid crystal layer of described liquid crystal lens array is in described driving voltage
Driving under form the second microlens array；
Within the continuous frame frequency working time, the alternately first electrode to described microlens array and the according to the method described above
Two electrodes apply driving voltage and second voltage respectively.
As shown in Figure 10, within the first frame frequency working time, if the first frame frequency working time was 0～8.3ms, wherein first
The frame frequency working time is divided into overvoltage drive time t1 and voltage stabilizing driving time t2 again；The t1 time period applies in first electrode 1003
Plus overvoltage driving voltage v1, liquid crystal molecule is shortened by overvoltage drive and is orientated, from z direction, the conversion time being orientated to x direction,
The t2 time period applies voltage stabilizing driving voltage v2 in first electrode 1003, makes the first liquid crystal layer form the first microlens array；?
In first frame frequency working time (t1+t2), the 3rd electrode 1007 has identical voltage with second electrode 1005 and is provided as base
Quasi- voltage；Within the second frame frequency time, that is, within 8.3～16.6ms, in the t1 time period, in second electrode 1005, apply one
Overvoltage driving voltage v1, shortens liquid crystal molecule by overvoltage drive and is orientated the conversion time to x direction orientation from z direction；So
Afterwards within the t2 time period, second electrode 1005 applies voltage stabilizing driving voltage v2, make the first liquid crystal layer form the second lenticule
Array；Within the second frame frequency time (t1+t2), the 3rd electrode 1007 has identical voltage with first electrode 1003.
Within the continuous frame frequency working time, the alternately first electrode to described microlens array and the according to the method described above
Two electrodes apply driving voltage and second voltage respectively, for example, according to the first frame frequency working time in the 3rd frame frequency working time
Interior type of drive to 3 d display device applied voltage, according in the second frame frequency working time within the 4th frame frequency working time
Type of drive to 3 d display device applied voltage.
For the 3rd electrode 1007 being formed with multiple strip electrodes, for accelerating liquid crystal lens in the first lenticule battle array
Switching between row and the second microlens array, can be same within the time t1 of the overvoltage drive of each frame frequency working time
Certain driving voltage is given, for example, in the overvoltage drive of the first frame frequency working time on the counter electrode of Shi tri- electrode 1007
In dynamic time t1, in the 3rd electrode 711,721,731 just to first electrode 1003 (10031,10032,10033,10034 etc.)
Deng on apply identical overvoltage driving voltage v1, and the voltage on other strip electrodes of the 3rd electrode and second electrode 1005
Voltage is reference voltage vref；In the overvoltage drive time t1 of the second frame frequency working time, just to second electrode 1005
3rd electrode 713 of (10051,10052,10053 etc.), 723,733 grades apply identical overvoltage driving voltage v1, and the 3rd
Voltage on other strip electrodes of electrode and the voltage in first electrode 1003 are reference voltage vref.
And in the voltage stabilizing working time t2 of each frame frequency, the voltage of all strip electrodes of the 3rd electrode 1007 must recover
To normal reference voltage vref.
As shown in figure 11, when liquid crystal lens are arranged according to above-mentioned driving voltage, within adjacent two continuous frames, formed
2. 1. first microlens array optical path difference distribution be distributed with the second microlens array optical path difference, the light path difference that adjacent two frames are formed
Cloth differs the width of half lenticule unit in x direction.
As shown in figure 12, the 2d display floater adopting when liquid crystal lens 3 d display device is with higher frame frequency such as 240hz work
Make and liquid crystal lens when being worked with 120hz, in the overvoltage drive time t1 in each frame frequency working time of liquid crystal lens,
Black plug or Plug Grey are carried out to 2d display device, to reduce crosstalk；In the voltage stabilizing driving time of each frame frequency working time, in 2d
Corresponding left and right time difference map picture is shown, such as, in the voltage stabilizing driving time of the first frame frequency working time, 2d shows in display device
Showing 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 shows
Showing device shows the second width horizontal parallax image (l2 and r2).
Figure 13 is the profile of another kind of liquid crystal lens 2000 in the embodiment of the present invention, in this embodiment, first electrode and
Second electrode is respectively positioned on the side just to second substrate 2002 for the first substrate 2001, i.e. the 2003 of in figure, each strip electrode
2003 are equal to half lenticule cell width and along the extension of y direction at x direction interval.First electrode and second electrode set
It is equipped with dielectric layer 2004, first level alignment films 2006 are provided with dielectric layer 2004, the rubbing of first level alignment films 2006
Wiping direction is parallel with the polarization direction of 2d display device emergent light；The side just to first substrate 2001 in second substrate 2002
On be provided with the second horizontal alignment film 2008, the frictional direction of the second horizontal alignment film 2008 and first level alignment films 2006
Frictional direction differs 180 degree；Second substrate 2002 is additionally provided with the 3rd electrode 2007 on the side just to first substrate 2001；The
Three electrodes 2007 are located between second substrate 2002 and the second horizontal alignment film 2008；First substrate 2001 and second substrate 2002
Between be packaged with the first liquid crystal layer 2009, the long axis direction of liquid crystal molecule of the first liquid crystal layer 2009 is parallel with x direction.
As Figure 13, when forming the first lenticule unit, phase can be applied on the odd number strip electrode of electrode 2003
The driving voltage answered；When forming the second lenticule unit, can apply corresponding on the even number strip electrode of electrode 2003
Driving voltage, driving voltage set-up mode may be referred to Figure 10 and Figure 12.
For the 3 d display device of the embodiment of the present invention, such as Figure 14, when needing to carry out 2d display, make first electrode
1003, between second electrode 1005 and the 3rd electrode 1007, no-voltage difference exists, and 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 from the line polarized light of 2d display device 1200 outgoing
Layer 1009 rear polarizer direction are constant, also do not reflect after liquid crystal lens from the light of 2d display device 1200 outgoing, former 2d
The optical characteristics of display device 1200 are substantially unaffected, and still have higher brightness and the characteristics such as contrast.
As shown in figure 15, when needing to carry out 3d display, formed within the first frame frequency working time of liquid crystal lens array
First microlens array, the first width horizontal parallax image (l1, r1) that now 2d display device shows is through the first lenticule battle array
After row light splitting, the first width horizontal parallax image is refracted to respectively the right and left eyes of audience.
As shown in figure 16, form the second microlens array within the second frame frequency working time of liquid crystal lens array, second
Microlens array is compared the first microlens array and is shifted half lenticule cell width in x direction, and now 2d display device shows
The second width horizontal parallax image (r2, l2) showing, after the second microlens array, the second width horizontal parallax image is distinguished
It is refracted to the right and left eyes of audience；When the first microlens array and the second microlens array switch in high frequency, collocation 2d shows
Right and left eyes anaglyph row's figure of showing device, is observed that high-resolution 3d image using human eye vision persistence effect.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, made any repair
Change, equivalent, improvement etc., should be included within the scope of the present invention.
Claims (4)
1. it is characterised in that acting on following 3 d display device, described stereo display fills the driving method of 3 d display device
Put including 2d display device and liquid crystal lens array, the first substrate periphery of described 2d display device and described liquid crystal lens array
Bonding or the laminating of whole face；
Described liquid crystal lens array, comprising: multiple lens units；
Described lens unit includes: first substrate and second substrate, and described first substrate and described second substrate just set to interval
Put；Wherein set the short transverse of described lens unit as z direction, vertical with z direction and with described lens unit width is put down
The direction of row is x direction, and the other direction vertical with z direction is y direction；
Described first substrate is coated with the first dielectric layer on the side just to described second substrate；Described first dielectric layer dorsad institute
State and first level alignment films are provided with the side of first substrate, the frictional direction of described first level alignment films is filled with 2d display
The polarization direction putting emergent light is parallel；
It is additionally provided with first electrode and second electrode between described first substrate and described first level alignment films；Described first electricity
Pole includes two strip electrodes, and this two strip electrodes are arranged at equal intervals side by side in the x-direction and extended in the y-direction, and this two
Spacing between strip electrode is equal with the width of described lens unit；Described second electrode is strip electrode, this strip electrode
Extend in the y-direction and equal with the spacing of two strip electrodes that described first electrode includes；
Described second substrate is coated with the second horizontal alignment film, described second horizontal alignment on the side just to described first substrate
The frictional direction of film differs 180 degree with the frictional direction of described first level alignment films；
Described second substrate is additionally provided with the 3rd electrode on the side just to described first substrate；Described 3rd electrode is located at described
Between second substrate and described second horizontal alignment film；
It is packaged with the first liquid crystal layer between described first substrate and described second substrate, the liquid crystal molecule of described first liquid crystal layer
Long axis direction is parallel with x direction；
Methods described includes:
First voltage is applied on the 3rd electrode of liquid crystal lens array；
Within the first frame frequency working time, driving voltage is applied on the first electrode of described liquid crystal lens array, described the
Second voltage is applied on two electrodes, the first liquid crystal layer of described liquid crystal lens array forms the under the driving of described driving voltage
One microlens array；
Within the second frame frequency working time, the first electrode of described liquid crystal lens array applies second voltage, described
Driving voltage is applied on the second electrode of lens array, the first liquid crystal layer of described liquid crystal lens array is in the drive of described driving voltage
Dynamic lower formation the second microlens array；
Within the continuous frame frequency working time, replace the first electrode to described microlens array and the second electricity according to the method described above
Pole applies driving voltage and second voltage respectively.
2. method according to claim 1 is it is characterised in that apply to drive in described first electrode or described second electrode
Galvanic electricity briquetting includes:
Within the overvoltage drive time of described first frame frequency working time and described second frame frequency working time, respectively described
Overvoltage driving voltage is applied on one electrode and described second electrode；
In the voltage stabilizing driving time of described first frame frequency working time and described second frame frequency working time, respectively described
Voltage stabilizing driving voltage is applied on one electrode and described second electrode.
3. method according to claim 2 is it is characterised in that described apply the on the 3rd electrode of liquid crystal lens array
One voltage, comprising:
When described 3rd electrode includes multiple strip electrodes and its quantity is odd number, in the mistake of described first frame frequency working time
In pressure driving time, described overvoltage drive electricity is applied on the strip electrode just to described first electrode of described 3rd electrode
Pressure, remaining strip electrode of described 3rd electrode applies second voltage；
Within the overvoltage drive time of described second frame frequency working time, in described 3rd electrode just to described second electrode
Described overvoltage driving voltage is applied on strip electrode, remaining strip electrode of described 3rd electrode applies second voltage；
In the voltage stabilizing driving time of each working frame frequency, all strip electrodes of described 3rd electrode all apply the second electricity
Pressure.
4. method according to claim 2 is it is characterised in that work as the work of the 2d display device of described 3 d display device
When frequency is more than the operating frequency of described liquid crystal lens array, within the overvoltage drive time of each frame frequency working time, to institute
State 2d display device and carry out black plug or Plug Grey；When showing corresponding left and right in the voltage stabilizing driving time of each frame frequency working time
Difference image.
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| CN104298023B (en) * | 2014-10-24 | 2017-06-13 | 华中科技大学 | The face battle array electrically-controlled liquid crystal light diverging lenticule chip that a kind of two-way voltage signal is controled |
| CN104494280B (en) * | 2015-01-09 | 2016-05-11 | 重庆卓美华视光电有限公司 | A kind of stripping off device of liquid crystal lens pillar film |
| 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) |
| CN113219758B (en) * | 2018-08-28 | 2023-07-28 | 电子科技大学 | Liquid crystal lens array device, imaging device and imaging method |
| 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 |
| 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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| 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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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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