CN104793394A - Grating device, display device and drive method of display device - Google Patents
Grating device, display device and drive method of display device Download PDFInfo
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- CN104793394A CN104793394A CN201510213279.6A CN201510213279A CN104793394A CN 104793394 A CN104793394 A CN 104793394A CN 201510213279 A CN201510213279 A CN 201510213279A CN 104793394 A CN104793394 A CN 104793394A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/29—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the position or the direction of light beams, i.e. deflection
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/26—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type
- G02B30/27—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the autostereoscopic type involving lenticular arrays
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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Abstract
The invention discloses a grating device, a display device and a drive method of the display device. The grating device comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate and further comprises a composite grating film arranged between the first substrate and the liquid crystal layer. The thickness of the liquid crystal layer is the thickness needed for the difference between the largest phase retardation needed in the 2D or 3D display process and the largest phase retardation generated by the composite grating film. By the adoption of the grating device, due to the fact that the composite grating film is arranged between the first substrate and the liquid crystal layer, part of the phase retardation is borne by the composite grating film, the thickness of the liquid crystal layer is reduced, the response speed of the display device is increased, the composite grating film is arranged between the first substrate and the liquid crystal layer, the space with the thickness identical to that of only one electrode layer is reserved between the liquid crystal layer and the composite grating film, the longitudinal interval between the liquid crystal layer and the composite grating film is reduced, and the visual effect of the display device is improved.
Description
Technical field
The present invention relates to display technique field, be specifically related to a kind of mounting for grating, display device and driving method thereof.
Background technology
In the display technique development of free stereo, realizing 2D/3D switching display is one of important content.Adopt electrically-controlled liquid crystal lens (ELC Lens) to be the important method realizing 2D/3D switching, liquid crystal lens mainly comprises: the upper substrate be oppositely arranged and infrabasal plate; Be positioned at upper substrate towards infrabasal plate one side on upper electrode layer be positioned at infrabasal plate towards upper substrate one side on lower electrode layer; Be filled in the liquid crystal in spatial accommodation that upper substrate and infrabasal plate form box.Liquid crystal lens is superposed with display panel, as shown in Figure 1, when needs carry out 3D display, regulate the voltage being applied to liquid crystal lens upper/lower electrode layer, thus change turning to of liquid crystal molecule, be that liquid crystal lens zones of different can produce different phase delay, there is the effect of similar phase delay optical lens; As shown in Figure 2, when needs carry out 2D display, remove the voltage be applied on liquid crystal lens, thus liquid crystal molecule keeps initial orientation state, does not produce phase delay, liquid crystal lens only allows the light of process all to pass through as a planar lens.But adopt liquid crystal lens to realize in the scheme of 2D/3D switching, often need larger liquid crystal cell thick, the liquid crystal lens that the 2D/3D being such as applied to 13.3 inches of notebooks switches needs the thick about 30um of box, even larger, the subject matter brought is that liquid crystal lens response speed is slack-off, and 2D/3D switches the larger delay of appearance, and the driving voltage that the thick needs of large box are large, increase the overall power of display device undoubtedly, the liquid crystal that the thick needs of box large are in addition a large amount of, increase manufacture craft difficulty.
Current solution to the problems described above as shown in Figure 3, column mirror grating is pasted with above upper substrate, the thickness being spaced apart upper electrode layer and upper substrate between this column mirror grating and liquid crystal layer, due to the existence of upper substrate, cause the longitudinal separation of column mirror grating and liquid crystal layer larger, display view angle is restricted, have impact on the visual effect of whole display device.
Summary of the invention
For defect of the prior art, the invention provides a kind of mounting for grating, display device and driving method thereof, improving the response speed of display device, while reducing power consumption, improve the visual effect of display device.
First aspect, the invention provides a kind of mounting for grating, comprise: first substrate, second substrate and the liquid crystal layer be arranged between described first substrate and described second substrate, is characterized in that, also comprise the composite grating film be arranged between described first substrate and described liquid crystal layer;
Wherein, the thickness of the described liquid crystal layer thickness required for the difference of maximum phase retardation that can produce for required maximum phase retardation and described composite grating film when carrying out 2D or 3D display.
Optionally, the thickness required for half of required maximum phase retardation when the thickness of described liquid crystal layer is for carrying out 2D or 3D display.
Optionally, the first electrode layer is set between described composite grating film and described liquid crystal layer, the second electrode lay is set between described liquid crystal layer and described second substrate.
Optionally, described first substrate is array base palte or color membrane substrates.
Optionally, described first electrode layer is plane-shape electrode, and described the second electrode lay is gate-shaped electrode; Or described first electrode layer is gate-shaped electrode, described the second electrode lay is plane-shape electrode.
Optionally, described composite grating film comprises column mirror grating and is formed in the flatness layer on described column mirror grating.
Optionally, described column mirror grating comprises multiple strip convex mirror unit arranged in parallel.
Second aspect, present invention also offers a kind of display device, comprises mounting for grating described above, and the display panel be superimposed with described mounting for grating.
Optionally, the first substrate in described mounting for grating and described display panel are bonding by optical cement, or a described mounting for grating plate base shared with described display panel.
The third aspect, present invention also offers a kind of driving method of display device, and the method is for driving above-mentioned display device, and described driving method comprises:
When carrying out 3D display, liquid crystal layer to described display device applies first group of driving voltage, the phase-delay quantity that the phase-delay quantity of described liquid crystal layer generation in the same area and described composite grating film are produced is superposed to the phase-delay quantity required for this region, and the curved change of phase-delay quantity from one end of described display device to the other end after superposition;
When carrying out 2D display, second group of driving voltage is applied to described liquid crystal layer, make the phase-delay quantity be superposed to required for this region of phase-delay quantity that in the same area, described liquid crystal layer produces and the phase-delay quantity that described composite grating film produces, and phase-delay quantity after the superposition of described display device regional is all identical.
Optionally, the situation of change of first group of driving voltage described in from one end of described display device to the other end is contrary with the situation of change of described second group of driving voltage, and the situation of change of the phase-delay quantity produced when carrying out 3D display with liquid crystal layer described in making from one end of described display device to the other end is contrary with the situation of change of the phase-delay quantity produced when carrying out 2D and showing.
As shown from the above technical solution, a kind of mounting for grating provided by the invention, display device and driving method thereof, by arranging composite grating film between a substrate and liquid crystal layer, and the thickness of liquid crystal layer is set to the thickness required for difference carrying out the maximum phase retardation that required maximum phase retardation and described composite grating film can produce when 2D or 3D shows, thus liquid crystal layer and composite grating film bear the phase-delay quantity of a part respectively, for carrying out phase-delay quantity when 2D/3D shows required for corresponding region after the two phase-delay quantity superposition, realize 2D/3D display, because composite grating film assume responsibility for a part of phase-delay quantity, therefore the lower thickness of liquid crystal layer, thus improve the response speed of display device, and composite grating film is arranged between one of them substrate and liquid crystal layer, thus make the thickness only comprising an electrode layer between liquid crystal layer and composite grating film, decrease the longitudinal separation between liquid crystal layer and composite grating film, improve the visual effect of display device.
In instructions of the present invention, describe a large amount of detail.But can understand, embodiments of the invention can be put into practice when not having these details.In some instances, be not shown specifically known method, structure and technology, so that not fuzzy understanding of this description.
Last it is noted that above each embodiment is only in order to illustrate technical scheme of the present invention, be not intended to limit; Although with reference to foregoing embodiments to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of various embodiments of the present invention technical scheme, it all should be encompassed in the middle of the scope of claim of the present invention and instructions.
Accompanying drawing explanation
Fig. 1 is that in prior art, display device carries out structural representation when 3D shows;
Fig. 2 is that in prior art, display device carries out structural representation when 2D shows;
Fig. 3 is the structural representation of mounting for grating in prior art;
The structural representation of the mounting for grating that Fig. 4 provides for one embodiment of the invention;
The structural representation of display device when carrying out 3D display that Fig. 5 provides for one embodiment of the invention;
The display device that Fig. 6 provides for one embodiment of the invention when carrying out 3D display phase-delay quantity with change in location figure;
The structural representation of display device when carrying out 2D display that Fig. 7 provides for one embodiment of the invention;
The display device that Fig. 8 provides for one embodiment of the invention when carrying out 2D display phase-delay quantity with change in location figure;
Wherein description of reference numerals:
1, mounting for grating; 2, optical cement; 3, display panel; 11, first substrate; 12, second substrate; 13, liquid crystal layer; 14, the first electrode layer; 15, the second electrode lay; 16, composite grating film; 161, column mirror grating; 162, flatness layer; 31, the 3rd substrate.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of invention is further described.Following examples only for technical scheme of the present invention is clearly described, and can not limit the scope of the invention with this.
Fig. 4 shows the structural representation of the mounting for grating that the embodiment of the present invention provides, as shown in Figure 4, this mounting for grating 1 comprises: first substrate 11, second substrate 12 and the liquid crystal layer 13 be arranged between first substrate 11 and second substrate 12, also comprise the composite grating film 16 be arranged between first substrate 11 and liquid crystal layer 13;
Wherein, the thickness of liquid crystal layer 13 thickness required for the difference of maximum phase retardation that can produce for required maximum phase retardation and composite grating film 16 when carrying out 2D or 3D display.
The polarized light of above-mentioned composite grating film 16 pairs of particular states can realize different phase delay, namely possesses certain lens function.
In the present embodiment, the phase-delay quantity that composite grating film 16 regional can make light produce is constant, the phase-delay quantity that liquid crystal layer 13 regional can make light occur can lead to superpotential regulation and control to realize different changes, and total phase-delay quantity that whole mounting for grating 1 can make light produce is the stack result of liquid crystal layer 13 and composite grating film 16 phase-delay quantity.During by being set to by the thickness of liquid crystal layer 13 carry out 2D/3D display, the thickness required for difference of the maximum phase retardation that required maximum phase retardation and composite grating film 16 can produce, can meet the demand to phase-delay quantity when carrying out 2D/3D display.Because a part of retardation is shared by composite grating film 16, therefore liquid crystal layer needs the phase-delay quantity produced to reduce to some extent, according to phase-delay quantity=Δ n × d (wherein, Δ n is the refractive index of liquid crystal, d is the thickness of liquid crystal layer), phase-delay quantity that liquid crystal layer 13 can produce can be obtained and himself thickness proportional, therefore in the present embodiment the thickness of liquid crystal layer 13 can arrange thinner, thus solve the problem that the large caused response speed of thickness of liquid crystal layer is slow, power consumption large and manufacture craft difficulty is high.
In the present embodiment to the setting principle of the thickness of liquid crystal layer 13 be: suppose that a certain region needs the phase-delay quantity produced to be A, the phase-delay quantity that composite grating film 16 can produce in this region is B, then liquid crystal layer 13 needs the phase-delay quantity produced to be A-B in this region, and then need liquid crystal layer 13 to have the thickness of (A-B)/Δ n in this region, when A produces maximum phase retardation for needs, the box that (A-B)/Δ n is required for liquid crystal layer 13 reality is thick.
It should be noted that, if the requirement of reality to the response speed of display device, power consumption and manufacture craft difficulty is higher, composite grating film more than 16 then can be made to share phase-delay quantity, liquid crystal layer 13 shares phase-delay quantity less, namely composite grating film 16 selects to produce the type of larger phase-delay quantity, the thickness design of liquid crystal layer 13 thinner; If the requirement of reality to 2D/3D display effect is higher, liquid crystal layer more than 13 then can be made to share phase-delay quantity, composite grating film 16 shares phase-delay quantity less, and namely the thickness design of liquid crystal layer 13 is only appropriate thinning, and composite grating film 16 selects the type that can produce less phase-delay quantity.Preferably, can by the thickness of liquid crystal layer 13 for carrying out 2D or 3D display time required maximum phase retardation the thickness required for half.Namely liquid crystal layer 13 and composite grating film 16 respectively share the phase-delay quantity of half, thus have both ensured the display effect of good 2D/3D, improve again the response speed of device to a certain extent, reduce power consumption and manufacture craft difficulty.
Composite grating film 16 in the mounting for grating 1 provided in the present embodiment and arrange the first electrode layer 14 between liquid crystal layer 13, arranges the second electrode lay 15 between liquid crystal layer 13 and second substrate 12.By applying different voltage to the first electrode layer 14 and the second electrode lay 15, make to produce voltage difference between the two, the liquid crystal molecule in liquid crystal layer 13 can be made to deflect, thus make through light produce phase delay, now, if the zones of different of liquid crystal layer 13 has different voltage differences, then the liquid crystal molecule of zones of different has different deflection situations, thus the phase-delay quantity that zones of different can make light occur is also different.
Will be understood that, at the first electrode layer 14 and liquid crystal layer 13 and all deposit PI oriented layer between the second electrode lay 15 and liquid crystal layer 13, this PI oriented layer has certain orientation for making the liquid crystal in liquid crystal layer.
Above-mentioned first substrate 11 can be array base palte or color membrane substrates, that is, above-mentioned composite grating film 16 can be arranged between array base palte and liquid crystal layer 13, also can be arranged between color membrane substrates and liquid crystal layer, all be arranged between array base palte and liquid crystal layer 13 with composite grating film in the present embodiment and be described, when composite grating film 16 is between color membrane substrates and liquid crystal layer 13, the effect of the present embodiment can be realized equally, just be that the position that composite grating film 16 is arranged is different, the present embodiment is no longer described in detail to the structure of composite grating film 16 between color membrane substrates and liquid crystal layer 13.
In a particular application, the first electrode layer 14 be arranged between composite grating film 16 and liquid crystal layer 13 is plane-shape electrode, and the second electrode lay 15 be arranged between liquid crystal layer 13 and second substrate 12 is gate-shaped electrode; Or the first electrode layer 14 is gate-shaped electrode, described the second electrode lay 15 is plane-shape electrode.Same voltage can be applied as common electric voltage for plane-shape electrode, identical or different voltage can be applied respectively to each gate-shaped electrode for gate-shaped electrode, thus the control that realization turns to zones of different liquid crystal molecule.
Composite grating film 16 in the present embodiment specifically comprises column mirror grating 161 and is formed in the flatness layer 162 on column mirror grating 161, because column mirror grating 161 comprises multiple strip convex mirror unit arranged in parallel, to realize repeating to increase the changing condition reduced gradually more gradually from column mirror grating 161 one end to other end phase-delay quantity, end face due to column mirror grating 161 is curved surface, directly be bonded in insecure on the first electrode layer 14 and easily produce gap, therefore need to arrange flatness layer 162 on column mirror grating 161, thus form composite grating film 16.
Based on above-mentioned mounting for grating 1, the present embodiment additionally provides a kind of display device, and this display device comprises mounting for grating 1 as shown in Figure 4, and the display panel 3 be superimposed with this mounting for grating 1.
Mounting for grating 1 included by the display device in the present embodiment is the structure that liquid crystal layer 13 superposes with composite grating film 16, the result of the phase-delay quantity superposition that the two produces is for carrying out total phase-delay quantity when 2D/3D shows required for corresponding region, therefore liquid crystal layer 13 only needs the phase-delay quantity producing a part, it is thinner that the thickness of liquid crystal layer 13 can do, relative to when superposing without composite grating film 16 in prior art, the display device of the scheme of the present embodiment is adopted to possess corresponding speed fast, the advantage that low in energy consumption and manufacture craft difficulty is little, and then make the speed of display device when carrying out 2D/3D switching display faster, reduce power consumption.And in the present embodiment, composite grating film 16 is arranged between first substrate 11 and liquid crystal layer 13, relative to the outside column mirror grating 161 in composite grating film 16 being set directly at first substrate 11, its visual angle is unrestricted, improves the visual effect of display device.
For example, in the structural representation of mounting for grating as shown in Figure 3, wherein column mirror grating 161 is arranged on the second substrate 12 in mounting for grating 1, therefore, this column mirror grating 161 and the thickness that is spaced apart second substrate 12 of liquid crystal layer 13 at vertical direction and the thickness of the second electrode lay 15, the thickness of general second substrate 12 is 0.5mm, 0.3mm can be reached after reduction process, the thickness of the second electrode lay 15 is generally 0.4-0.7mm, because column mirror grating 161 and liquid crystal layer 13 are comparatively large at the interval of vertical direction, cause the visual angle of this display device limited, and adopt the application's scheme, as shown in Figure 4, composite grating film 16 and the thickness 0.4-0.7mm that be spaced apart first electrode layer 14 of liquid crystal layer 13 at vertical direction, relative to column mirror grating in Fig. 3 161 and liquid crystal layer 13 at the interval of vertical direction, decrease the thickness of a substrate, that is, its interval is only the thickness of the second electrode lay 15, the lens that the lens making liquid crystal layer 13 be formed thus and composite grating film 16 are formed diminish at the interval of vertical direction, decrease the thickness of a substrate, general is 0.5mm, thus, the technical scheme of the application is in the response speed improving display device, while reducing power consumption, improve the visual effect of display device.
Concrete, the first substrate 11 in mounting for grating 1 is bonding by optical cement 2 with described display panel 3, and bonding with the 3rd substrate 31 by optical cement 2 by first substrate 11, its technique is simple, easy to operate; Or mounting for grating 1 shares a plate base with display panel 3, namely without optical cement 2 and the 3rd substrate 31, directly using the upper substrate of first substrate 11 as display panel 3, thus realize the object such as integral thickness, saving material, raising transmittance of thinning display device.
Corresponding with above-mentioned display device, the present embodiment additionally provides its driving method, this driving method comprises: when carrying out 3D display, liquid crystal layer 13 to display device applies first group of driving voltage, make the phase-delay quantity be superposed to required for this region of the phase-delay quantity that the phase-delay quantity of liquid crystal layer 13 generation and the composite grating film 16 of display device produce in the same area, and the curved change of phase-delay quantity from one end of display device to the other end after superposition; When carrying out 2D display, second group of driving voltage is applied to liquid crystal layer 13, the phase-delay quantity be superposed to required for this region of the phase-delay quantity that the phase-delay quantity that liquid crystal layer 13 in the same area is produced and composite grating film 16 produce, and phase-delay quantity after the superposition of display device regional is all identical.
The driving method that the present embodiment provides, by applying first group of driving voltage and second group of driving voltage respectively when 2D/3D shows, liquid crystal layer 13 is enable to produce different bit phase delay curves when 2D/3D shows, achieve the function of 2D/3D display, type of drive is simple, and has fast response time and advantage low in energy consumption.
Such as, when carrying out 3D display, first group of driving voltage makes the situation of change of the bit phase delay amount PR of liquid crystal layer 13 from one end to the other end as shown in the dotted line Fig. 5 and the curve bottom Fig. 6, the increase gradually repeated reduces gradually again, thus there is the pattern of optical lens, the dominant bit phase retardation amount (i.e. position x place) that can produce is such as 4.5 μm; The bit phase delay amount PR that composite grating film 16 produces is with the change curve of position as shown in the curve in the middle part of Fig. 6, and the increase gradually of repetition reduces gradually again, and the dominant bit phase retardation amount (i.e. position x place) that it can produce such as also is 4.5 μm; The bit phase delay amount that liquid crystal layer 13 produces with composite grating film 16 superposes, the bit phase delay amount PR that final whole display device produces with the change curve of position as shown in the curve on Fig. 6 top, the increase gradually repeated reduces gradually again, and dominant bit phase retardation amount (i.e. position x place) is 4.5 μm+4.5 μm=9 μm.
When carrying out 2D display, second group of driving voltage makes the situation of change of the bit phase delay amount PR of liquid crystal layer 13 from one end to the other end as shown in the dotted line Fig. 7 and the curve bottom Fig. 8, the reduction gradually repeated increases gradually again, the dominant bit phase retardation amount that it can produce is 4.5 μm, and minimum bit phase retardation amount is 0; The bit phase delay amount PR that composite grating film 16 produces is with the change curve of position as shown in the curve in the middle part of Fig. 8, and the increase gradually of repetition reduces gradually again, and the dominant bit phase retardation amount that it can produce also is 4.5 μm; The bit phase delay amount that liquid crystal layer 13 produces with composite grating film 16 superposes, the bit phase delay amount PR that final whole display device produces does not change with the change of position, as shown in the straight line on Fig. 8 top, it is 2.25 μm+2.25 μm=4.5 μm in the bit phase delay amount at x1 place, position, it is 0+4.5 μm=4.5 μm in the bit phase delay amount at x2 place, position, namely bit phase delay amount is always 4.5 μm, thus in fact whole mounting for grating 1 plays a planar lens, to the light of process, not there is a point light action, allow whole light to pass through.
It should be noted that, only for above-mentioned concrete numerical value, driving process is described in detail in the present embodiment, concrete numerical value wherein, based on above-mentioned driving process specifically, can be replaced with other numerical value, or carry out other distortion and extension by those skilled in the art.
In the present embodiment, the setting principle of first group of driving voltage and second group of driving voltage preferably be can be: from one end of display device to the other end, the situation of change of first group of driving voltage is contrary with the situation of change of second group of driving voltage, to make the situation of change of the phase-delay quantity produced when carrying out 3D display from one end of display device to other end liquid crystal layer 13 contrary with the situation of change of the phase-delay quantity produced when carrying out 2D and showing, thus ensure that the bit phase delay needed all can be carried out in each region of display device when 3D and 2D shows.
Display device in the present embodiment can be: any product or parts with Presentation Function such as mobile phone, panel computer, televisor, notebook computer, digital album (digital photo frame), navigating instrument.
Claims (11)
1. a mounting for grating, it is characterized in that, comprise: first substrate, second substrate and the liquid crystal layer be arranged between described first substrate and described second substrate, is characterized in that, also comprise the composite grating film be arranged between described first substrate and described liquid crystal layer;
Wherein, the thickness of the described liquid crystal layer thickness required for the difference of maximum phase retardation that can produce for required maximum phase retardation and described composite grating film when carrying out 2D or 3D display.
2. mounting for grating according to claim 1, is characterized in that, the thickness required for the half of maximum phase retardation required when the thickness of described liquid crystal layer is for carrying out 2D or 3D display.
3. mounting for grating according to claim 1, is characterized in that, arranges the first electrode layer, between described liquid crystal layer and described second substrate, arrange the second electrode lay between described composite grating film and described liquid crystal layer.
4. mounting for grating according to claim 1, is characterized in that, described first substrate is array base palte or color membrane substrates.
5. mounting for grating according to claim 3, is characterized in that, described first electrode layer is plane-shape electrode, and described the second electrode lay is gate-shaped electrode; Or described first electrode layer is gate-shaped electrode, described the second electrode lay is plane-shape electrode.
6. mounting for grating according to claim 1, is characterized in that, described composite grating film comprises column mirror grating and is formed in the flatness layer on described column mirror grating.
7. mounting for grating according to claim 6, is characterized in that, described column mirror grating comprises multiple strip convex mirror unit arranged in parallel.
8. a display device, is characterized in that, comprises the mounting for grating according to any one of claim 1-7, and the display panel be superimposed with described mounting for grating.
9. display device according to claim 8, is characterized in that, the first substrate in described mounting for grating and described display panel are bonding by optical cement, or a described mounting for grating plate base shared with described display panel.
10. a driving method for display device, is characterized in that, for driving the display device according to any one of claim 8-9, described driving method comprises:
When carrying out 3D display, liquid crystal layer to described display device applies first group of driving voltage, the phase-delay quantity that the phase-delay quantity of described liquid crystal layer generation in the same area and described composite grating film are produced is superposed to the phase-delay quantity required for this region, and the curved change of phase-delay quantity from one end of described display device to the other end after superposition;
When carrying out 2D display, second group of driving voltage is applied to described liquid crystal layer, make the phase-delay quantity be superposed to required for this region of phase-delay quantity that in the same area, described liquid crystal layer produces and the phase-delay quantity that described composite grating film produces, and phase-delay quantity after the superposition of described display device regional is all identical.
11. driving methods according to claim 10, it is characterized in that, the situation of change of first group of driving voltage described in from one end of described display device to the other end is contrary with the situation of change of described second group of driving voltage, and the situation of change of the phase-delay quantity produced when carrying out 3D display with liquid crystal layer described in making from one end of described display device to the other end is contrary with the situation of change of the phase-delay quantity produced when carrying out 2D and showing.
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| CN104793394B (en) | 2018-06-05 |
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