CN103048835A - Liquid crystal grating, driving method of the liquid crystal grating and three-dimensional display device - Google Patents
Liquid crystal grating, driving method of the liquid crystal grating and three-dimensional display device Download PDFInfo
- Publication number
- CN103048835A CN103048835A CN2012105262641A CN201210526264A CN103048835A CN 103048835 A CN103048835 A CN 103048835A CN 2012105262641 A CN2012105262641 A CN 2012105262641A CN 201210526264 A CN201210526264 A CN 201210526264A CN 103048835 A CN103048835 A CN 103048835A
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- position information
- light
- crystal grating
- current position
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 149
- 238000000034 method Methods 0.000 title claims abstract description 15
- 239000000758 substrate Substances 0.000 claims abstract description 43
- 238000005401 electroluminescence Methods 0.000 claims 1
- 238000002360 preparation method Methods 0.000 claims 1
- 230000000007 visual effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000000149 penetrating effect Effects 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 206010020675 Hypermetropia Diseases 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 210000004556 brain Anatomy 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000004305 hyperopia Effects 0.000 description 1
- 201000006318 hyperopia Diseases 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 208000001491 myopia Diseases 0.000 description 1
- 230000004379 myopia Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 210000000857 visual cortex Anatomy 0.000 description 1
Images
Landscapes
- Liquid Crystal (AREA)
Abstract
The invention discloses a liquid crystal grating, a driving method of the liquid crystal grating and a three-dimensional display device; and aims at solving the problem that existing liquid crystal gratings are prone to cause crosstalk during three-dimensional display. The liquid crystal grating of the embodiment comprises a first substrate, a second substrate and a liquid crystal layer arranged between the first substrate and the second substrate, and the first substrate and/or the second substrate are provided with a plurality of bar-shaped electrode structures arranged at equal intervals. Each bar-shaped electrode structure is connected with a driving circuit of the liquid crystal grating through different control lines, and under a three-dimensional display mode, the liquid crystal grating adjusts size of a light transmitting area corresponding to each current position information according to the current position information of each light transmitting area corresponding to own left eyes and right eyes of watchers. The light transmitting area of the embodiment can effectively reduce crosstalk and improve visual angles of the watchers under the three-dimensional display mode.
Description
Technical Field
The invention relates to the technical field of stereoscopic display, in particular to a liquid crystal grating, a driving method thereof and a stereoscopic display device.
Background
The working principle of the three-dimensional (3D) display technology is: aiming at the same scene, the left eye and the right eye of a viewer respectively receive images, the distance (namely, the interpupillary distance is about 65 mm) between the two eyes of the viewer in the horizontal direction enables the visual angles of the two eyes to have slight difference, due to the difference, the images respectively observed by the left eye and the right eye of the viewer also have slight difference, the difference is called as binocular parallax, the different images observed by the left eye and the right eye form a pair of stereo image pairs, and the stereo image pairs form a stereo effect after being fused by visual cortex of the brain.
When the current stereoscopic display device is used for watching, a viewer needs to wear stereoscopic glasses, and because the size of the stereoscopic glasses is usually fixed, the viewer with different face shapes cannot obtain better user experience when wearing the stereoscopic glasses for watching; in addition, for a viewer who wears glasses (such as myopia glasses and hypermetropia glasses) originally, in order to obtain a stereoscopic viewing effect, two pairs of glasses need to be overlapped for use, so that the use is inconvenient, and the user experience is reduced. The naked eye 3D technology capable of realizing stereoscopic display can be realized without auxiliary tools. Currently mainstream naked-eye 3D technologies include: parallax-based stereoscopic display technology, holographic stereoscopic display, and volumetric stereoscopic display. Among them, the parallax-based stereoscopic display technology is the most mature three-dimensional display technology at present, and mainly includes two ways: grating and lens array. With the continuous development of liquid crystal technology, liquid crystal materials are widely used in various fields. The liquid crystal grating is an active grating (active barrier), not only can realize three-dimensional stereo display, can also realize switching between 2D/3D, and its structure is shown with reference to fig. 1, includes: a first substrate 11A, a second substrate 11B, and a liquid crystal layer 12 located between the first substrate 11A and the second substrate 11B, wherein a plurality of first electrodes 13A and first alignment layers 14A arranged at equal intervals are sequentially disposed on an inner side (i.e., a side facing the liquid crystal layer 12) of the first substrate 11A, and a polarizer 15 is disposed on an outer side thereof; a second electrode 13B and a second alignment layer 14B are sequentially disposed on the inner side of the second substrate 11B.
When the strip electrodes of the liquid crystal grating are electrified, the liquid crystal molecules corresponding to each strip electrode deflect, and other liquid crystal molecules do not deflect. At the moment, after the light enters the liquid crystal layer, the polarization direction can be gradually changed when the light passes through the liquid crystal which is not deflected, when the light reaches the polaroid, the vibration direction of the polarized light is just parallel to the absorption axis of the polaroid, and then the light passes through the liquid crystal layer to form a light-transmitting area of the liquid crystal grating; the polarization direction of the light is not changed when the light passes through the deflected liquid crystal, and the vibration direction of the polarized light is perpendicular to the absorption axis of the polarizing plate when the light reaches the polarizing plate, so that the light does not pass through, and a non-light-transmitting area of the liquid crystal grating is formed, thereby separating the visible pictures of the left eye and the right eye, and realizing a three-dimensional display effect, as shown in fig. 2, the display panel 21 comprises pixel units with a matrix structure, the light emitted by the display panel 21 passes through the liquid crystal grating 22, the light of the left eye image L displayed by the display panel 21 is transmitted to the left eye L of a viewer, similarly, the light of the right eye image R is transmitted to the right eye R of the viewer, and the left eye and the right eye of the viewer respectively receive the left eye image L and the right eye image R with parallax, thereby forming a.
In the conventional driving circuit of the liquid crystal grating, all the strip electrodes 32 of the liquid crystal grating are connected by one control line 31, as shown in fig. 3A and 3B, the strip electrodes and the control line are connected in two different implementation forms. Under the working state, the driving circuit provides the same driving voltage for each strip electrode. When the existing liquid crystal grating performs three-dimensional display, because a left eye and a right eye of an observer have a certain included angle with each light-transmitting area of the liquid crystal grating, the ideal degree of the included angle is 90 °, and if the included angle is smaller than 90 °, crosstalk phenomenon is easily caused (namely, an image which only needs to enter the left eye still enters the right eye originally, or an image which only needs to enter the right eye still enters the left eye originally).
As described above, the conventional liquid crystal grating is likely to cause a crosstalk phenomenon when performing three-dimensional display.
Disclosure of Invention
The embodiment of the invention provides a liquid crystal grating, a driving method thereof and a three-dimensional display device, which are used for solving the problem that crosstalk is easily caused when the existing liquid crystal grating carries out three-dimensional display.
The embodiment of the invention provides a liquid crystal grating, which comprises a first substrate, a second substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein a plurality of strip-shaped electrode structures which are arranged at equal intervals are arranged on the first substrate and/or the second substrate; wherein,
each strip-shaped electrode structure is connected with a driving circuit of the liquid crystal grating through different control lines; in a three-dimensional display mode, the liquid crystal grating adjusts the size of each light-transmitting area corresponding to the current position information according to the current position information of each light-transmitting area of the left eye or the right eye of the viewer relative to the liquid crystal grating.
The embodiment of the invention provides a three-dimensional display device, which comprises a display panel, a human eye tracking device and a liquid crystal grating;
in the three-dimensional display mode, the human eye tracking device is used for determining current position information of a left eye or a right eye of a viewer relative to each light-transmitting area of the liquid crystal grating and transmitting each determined current position information to a driving circuit of the liquid crystal grating.
The embodiment of the invention provides a driving method of a liquid crystal grating, which comprises the following steps:
acquiring current position information of a left eye or a right eye of a viewer relative to each light-transmitting area of the liquid crystal grating in a three-dimensional display mode; and
and adjusting the size of the light-transmitting area corresponding to each piece of current position information according to the determined current position information.
In the embodiment of the invention, each strip electrode structure of the liquid crystal grating is connected with the driving circuit through different control lines, and in the three-dimensional display mode, the driving circuit respectively adjusts the size of each light-transmitting area of the liquid crystal grating according to the current position information of the left eye or the right eye of a viewer relative to each light-transmitting area of the driving circuit, so that in the three-dimensional display mode, the crosstalk phenomenon can be effectively reduced, and the viewing angle of the viewer can be improved.
Drawings
FIG. 1 is a schematic diagram of a liquid crystal grating in the prior art;
FIG. 2 is a schematic diagram of a three-dimensional display principle in the background art;
FIG. 3A is a schematic diagram of a first connection between the strip electrodes of the liquid crystal grating and the control lines of the driving circuit thereof in the prior art;
FIG. 3B is a second connection diagram of the strip electrodes of the liquid crystal grating and the control lines of the driving circuit thereof in the prior art;
FIG. 4 is a schematic diagram illustrating a crosstalk phenomenon generated in a three-dimensional display mode of a related art stereoscopic display device;
FIG. 5A is a schematic diagram of a first connection between a stripe electrode structure of a liquid crystal grating and a control line of a driving circuit thereof according to an embodiment of the present invention;
FIG. 5B is a schematic diagram of a second connection between a stripe electrode structure of a liquid crystal grating and a control line of a driving circuit thereof according to an embodiment of the present invention;
FIG. 6A is a schematic structural diagram of a transparent region and a non-transparent region formed after a voltage V1 is applied to a liquid crystal grating according to an embodiment of the present invention;
FIG. 6B is a schematic structural diagram of a transparent region and a non-transparent region formed after a voltage V2 is applied to a liquid crystal grating according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a stereoscopic display apparatus according to an embodiment of the invention;
FIG. 8 is a schematic diagram illustrating the principle of the cross talk reduction of the liquid crystal grating in the three-dimensional display mode according to the embodiment of the present invention;
fig. 9 is a schematic flow chart of a driving method of a liquid crystal grating according to an embodiment of the present invention.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings. It should be noted that the drawings are only for purposes of illustrating the preferred embodiments of the invention and are not to be construed as limiting the embodiments of the invention.
The liquid crystal grating provided by the embodiment of the invention comprises a first substrate, a second substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein the first substrate and/or the second substrate are/is provided with a plurality of strip-shaped electrode structures which are arranged at equal intervals;
each strip-shaped electrode structure is connected with the driving circuit of the liquid crystal grating through a different control line, as shown in fig. 5A, each vertically arranged strip-shaped electrode structure 51 of the liquid crystal grating is connected with the driving circuit 53 of the liquid crystal grating through a different control line 52; for another example, referring to fig. 5B, each of the stripe-shaped electrode structures 51 arranged at a specific angle of the liquid crystal grating is connected to the driving circuit 53 of the liquid crystal grating through a different control line 52;
in a three-dimensional display mode, the liquid crystal grating adjusts the size of the light transmission region corresponding to each current position information according to the current position information of the left eye or the right eye of the viewer relative to each light transmission region of the liquid crystal grating, so that the left eye image only enters the left eye and the right eye image only enters the right eye, thereby reducing crosstalk.
Further, the electrode structures of the first substrate and the second substrate of the liquid crystal grating in the embodiment of the invention include the following three types:
the first structure is as follows: the upper surface or the lower surface of the first substrate is provided with a plurality of strip-shaped electrode structures which are arranged at equal intervals, and the upper surface or the lower surface of the second substrate is provided with a planar electrode structure;
the second structure is as follows: the upper surface or the lower surface of the first substrate is provided with a planar electrode structure, and the upper surface or the lower surface of the second substrate is provided with a plurality of strip-shaped electrode structures which are arranged at equal intervals;
a third structure: the upper surface or the lower surface of the first substrate is provided with a plurality of strip-shaped electrode structures which are arranged at equal intervals, and the upper surface or the lower surface of the second substrate is provided with a plurality of strip-shaped electrode structures which are arranged at equal intervals.
Preferably, the surface of the first substrate facing the liquid crystal layer and/or the surface of the second substrate facing the liquid crystal layer of the liquid crystal grating have a plurality of strip-shaped electrodes arranged at equal intervals.
Further, in the embodiment of the present invention, the current position information of the left eye or the right eye of the viewer relative to each of the light-transmitting areas of the viewer can be determined in real time by the eye tracking device and transmitted to the driving circuit of the liquid crystal grating.
In a three-dimensional display mode, the liquid crystal grating applies voltage to the electrodes on the two substrates to enable liquid crystal molecules to deflect under the action of an electric field formed between the electrodes, so that the passing and the non-passing of light rays emitted into the liquid crystal grating are controlled, and meanwhile, the passing strength of the light rays (namely the size of a light-transmitting area) can be controlled by adjusting the magnitude of the voltage value applied to the electrodes; referring to fig. 6A, in the figure, a first electrode 63A is disposed on a side of the first substrate 61A facing the liquid crystal layer 62, and a second electrode 63B is disposed on a side of the second substrate 61B facing the liquid crystal layer 62, where the first electrode 63A is a stripe-shaped electrode arranged at equal intervals, and the second electrode 63B is a planar electrode, and it should be noted that the shape of the first electrode and the shape of the second electrode of the liquid crystal grating are not limited in the embodiments of the present invention. In the three-dimensional display mode, the voltage applied to the second electrode 63B is zero, i.e., the common voltage, the voltage applied to the first electrode 63A is V1 (V1 > 0), and the resultant light-transmitting region and non-light-transmitting region are as shown in the figure;
if the voltage applied to the first electrode 63A is V2, where V2> V1, the light-transmitting area and the non-light-transmitting area are obtained as shown in fig. 6B, and it can be seen that the larger the value of the voltage applied to the first electrode 63A, the larger the width of the non-light-transmitting area formed by the first electrode 63A, and accordingly, the smaller the width of the light-transmitting area adjacent to the non-light-transmitting area, and therefore, the width of the light-transmitting area adjacent to the non-light-transmitting area can be changed by adjusting the magnitude of the driving voltage of the electrode in the non-light-transmitting area of the liquid crystal grating.
Further, for each determined current position information, the driving circuit of the liquid crystal grating determines a driving voltage corresponding to the current position information according to a corresponding relationship between the position information and the driving voltage, uses the determined driving voltage as a current driving voltage of the strip electrode structure in a non-light-transmission area adjacent to the light-transmission area corresponding to the current position information, and loads the determined driving voltage to the strip electrode structure through a control line connected with the strip electrode structure.
It should be noted that the number of the non-light-transmission regions adjacent to each light-transmission region in the liquid crystal grating may be one (if the edge of the liquid crystal grating is a light-transmission region, the number of the non-light-transmission regions adjacent to the light-transmission region is one), or may be two; for a light-transmitting area with two adjacent non-light-transmitting areas, taking the driving voltage determined according to the position information of the left eye or the right eye of the viewer relative to the light-transmitting area as the current driving voltage of the strip-shaped electrode structure in one non-light-transmitting area adjacent to the light-transmitting area;
preferably, for each light-transmitting region having two adjacent non-light-transmitting regions, the driving voltage determined according to the position information of the left eye or the right eye of the viewer relative to each light-transmitting region is respectively used as the current driving voltage of the strip-shaped electrode structure in one non-light-transmitting region adjacent to the same side of each light-transmitting region, for example, the non-light-transmitting region adjacent to the left of each light-transmitting region or the non-light-transmitting region adjacent to the right of each light-transmitting region.
Further, the corresponding relation between the position information and the driving voltage is determined according to the included angle between the light which is emitted from the display panel and enters human eyes through the liquid crystal grating and the plane of the display panel (or the plane of the liquid crystal grating) and the induction degree of the liquid crystal molecules of the liquid crystal grating to the driving voltage;
the determination of the corresponding relation needs to consider the influence of factors such as the performance parameters of the liquid crystal molecular material, the width of the electrode, the distance between two adjacent electrodes, the thickness of the liquid crystal grating box and the like.
Preferably, in order to avoid frequent adjustment, for each determined current position information, when determining that the current position information exceeds a set threshold range, the driving circuit determines a driving voltage corresponding to the current position information according to the corresponding relationship, further takes the determined driving voltage as a current driving voltage of the strip electrode structure in the non-light-transmission region adjacent to the light-transmission region corresponding to the current position information, and loads the determined driving voltage to the strip electrode structure through a control line connected to the strip electrode structure;
the set threshold range is an empirical value and can be set according to actual needs.
Preferably, in the embodiment of the present invention, the position information is an angle value of an included angle between light rays which penetrate through each light-transmitting area of the liquid crystal grating and enter the left eye or the right eye of the viewer and a plane where the liquid crystal grating is located;
in the embodiment of the invention, the direction of the included angle between the light of the left eye or the right eye of the viewer and each light-transmitting area of the liquid crystal grating is not limited;
the angle value of the included angle of the light penetrating through each light-transmitting area and entering the left eye or the right eye of the viewer relative to the same direction of each light-transmitting area of the liquid crystal grating can be selected as the position information of the embodiment of the invention, and the angle value of the included angle of the light penetrating through each light-transmitting area and entering the left eye or the right eye of the viewer relative to each light-transmitting area of the liquid crystal grating, which is an acute angle, can also be selected as the position information of the embodiment of the invention.
Further, if the position information is an angle value, in the corresponding relationship between the angle value and the driving voltage in the embodiment of the present invention, the smaller the angle value is, the larger the corresponding driving voltage is, so that the smaller the light-transmitting area is; the larger the angle value is, the smaller the corresponding driving voltage is, so that the larger the light-transmitting area is; when the angle value is 90 °, the driving voltage of the strip electrode structure in the non-light-transmitting region adjacent to the light-transmitting region corresponding to the angle value does not need to be adjusted.
The driving circuit of the liquid crystal grating can adjust the magnitude of the driving voltage applied to each strip-shaped electrode structure according to the current angle value of the left eye or the right eye of the viewer relative to each light-transmitting area of the viewer, and the determined driving voltage is respectively loaded to the corresponding strip-shaped electrode structures through the control lines connected with the strip-shaped electrode structures, so that different strip-shaped electrode structures have different driving voltages, thereby effectively reducing the crosstalk phenomenon in a three-dimensional display mode and improving the viewing angle of the viewer.
The stereoscopic display device provided by the embodiment of the invention comprises a display panel, a liquid crystal grating and a human eye tracking device; the liquid crystal grating is provided in the embodiment of the invention, and is not described herein again;
in a three-dimensional display mode, the human eye tracking device is used for determining current position information of a left eye or a right eye of a viewer relative to each light-transmitting area of the liquid crystal grating and transmitting each determined current position information to the driving circuit of the liquid crystal grating; correspondingly, the driving circuit is used for adjusting the size of the light-transmitting area corresponding to each piece of current position information according to the received current position information.
Further, in the embodiment of the present invention, if the display panel is a liquid crystal panel, the liquid crystal grating is located on the light emitting side of the liquid crystal display panel; or between the liquid crystal display panel and the backlight module of the three-dimensional display device;
if the display panel is an Organic Light Emitting Diode (OLED) display panel, the liquid crystal grating is located on the Light Emitting side of the OLED display panel.
The operation principle of the stereoscopic display device according to the embodiment of the present invention will be described with reference to the schematic structural diagram of the stereoscopic display device shown in fig. 7.
Referring to fig. 7, the stereoscopic display device of the present embodiment includes a display panel 71, a liquid crystal barrier 72, and an eye tracking device 73; the driving circuit 711 of the display panel and the driving circuit 721 of the liquid crystal grating can be controlled by the processing circuit 74 of the stereoscopic display device; the liquid crystal grating 72 is a liquid crystal grating provided by the embodiment of the present invention;
when the stereoscopic display device performs three-dimensional display, the eye tracking device 73 determines current position information of the left eye or the right eye of the viewer relative to each light-transmitting area of the liquid crystal grating 72 in real time, and transmits the current position information to the processing circuit 74 of the stereoscopic display device, and the processing circuit 74 of the stereoscopic display device transmits the current position information to the driving circuit 721 of the liquid crystal grating and triggers the driving circuit 721 of the liquid crystal grating to adjust the size of the light-transmitting area corresponding to each current position information according to the received current position information.
It should be noted that, in the embodiments of the present invention, the position of the eye tracking device is not limited, as long as the current position information of the left eye or the right eye of the viewer with respect to each light-transmitting region of the liquid crystal grating can be acquired, and the eye tracking device is preferably located at the position of the center line of the display panel.
In an embodiment of the present invention, the eye tracking apparatus includes at least one CCD image sensor disposed at a periphery of the display device, and preferably, the CCD image sensor is located in a region where a center line of the display device is located;
the working principle of the human eye tracking device is as follows: the positions of the left eye and the right eye of the viewer are sensed through the CCD image sensor, and position information such as the vertical distance between the position of the left eye (or the right eye) and the display device, the angle information of an included angle formed by the position of the left eye (or the right eye) and the edge connecting line of the display device, the angle information of an included angle between the position of the left eye (or the right eye) and each light-transmitting area of the liquid crystal grating of the display device and the like is obtained through analysis.
As an implementation form, in an embodiment of the present invention, the driving circuit is specifically configured to:
and aiming at each piece of received current position information, determining a driving voltage corresponding to the current position information according to the corresponding relation between the position information and the driving voltage, taking the determined driving voltage as the current driving voltage of the strip-shaped electrode structure in a non-light-transmission area adjacent to a light-transmission area corresponding to the current position information, and loading the determined driving voltage to the strip-shaped electrode structure through a control line connected with the strip-shaped electrode structure.
As another implementation form, in an embodiment of the present invention, the driving circuit is specifically configured to:
and for each determined current position information, when the current position information is determined to be beyond a set threshold range, determining a driving voltage corresponding to the current position information according to the corresponding relation between the position information and the driving voltage, taking the determined driving voltage as the current driving voltage of the strip-shaped electrode structure in the non-light-transmission area adjacent to the light-transmission area corresponding to the current position information, and loading the determined driving voltage to the strip-shaped electrode structure through a control line connected with the strip-shaped electrode structure.
In the embodiment of the present invention, the driving Circuit may be implemented by an Integrated Circuit (IC), and the driving voltage of each strip electrode structure is independently controlled by each control line.
Preferably, in the embodiment of the present invention, the position information is an angle value of an included angle between a left eye or a right eye of the viewer and each light-transmitting area of the liquid crystal grating.
Referring to fig. 8, it is a schematic diagram of a display effect of the liquid crystal grating according to the embodiment of the present invention in the three-dimensional display mode after being applied to the stereoscopic display device shown in fig. 4. The following description will take an example in which the eye tracking apparatus determines the angle of the right eye of the viewer with respect to each of the light-transmitting regions of the liquid crystal grating. In the figure, the dotted line part is a light transmission path which is emitted by the stereoscopic display device in the background art and enters the right eye, the embodiment of the invention determines the angle value (α 1- α 3) of the right eye of the viewer relative to each light-transmitting area (B1-B3) of the liquid crystal grating through the human eye tracking device, and if the set threshold range is 80 ° -110 °, and the human eye tracking device determines α 1=60 °, α 2=75 °, and α 3=100 °, according to the threshold range, the widths of the light-transmitting areas B1 and B2 corresponding to α 1 and α 2 respectively need to be adjusted, and since α 3 does not exceed the threshold range, the width of the light-transmitting area B3 corresponding to α 3 does not need to be adjusted; according to the corresponding relation between the angle value and the driving voltage, respectively determining a voltage value v1 corresponding to alpha 1 and a voltage value v2 corresponding to alpha 2; and the determined v1 was taken as the voltage value of the current driving voltage of the bar-shaped electrode structure in the non-light-transmitting region a1 adjacent to the light-transmitting region B1, and the determined v2 was taken as the voltage value of the current driving voltage of the bar-shaped electrode structure in the non-light-transmitting region a2 adjacent to the light-transmitting region B2, thereby adjusting the widths of the light-transmitting regions B1 and B2. After adjustment, the transmission path of the light emitted from the stereoscopic display device and entering the right eye is shown by a solid line in the figure, so that the crosstalk phenomenon is effectively reduced.
Referring to fig. 9, a driving method of a liquid crystal grating according to an embodiment of the present invention includes the following steps:
step 91, acquiring current position information of a left eye or a right eye of a viewer relative to each light-transmitting area of the liquid crystal grating in a three-dimensional display mode; and
and step 92, adjusting the size of the light-transmitting area corresponding to each piece of current position information according to the determined current position information.
As an implementation form, the adjusting the size of the light-transmitting area corresponding to each piece of current position information in step 92 further includes:
and for each determined current position information, determining a driving voltage corresponding to the current position information according to the corresponding relation between the position information and the driving voltage, and taking the determined driving voltage as the current driving voltage of the strip-shaped electrode structure in the non-light-transmitting area adjacent to the light-transmitting area corresponding to the current position information.
It should be noted that the number of the non-light-transmission regions adjacent to each light-transmission region in the liquid crystal grating may be one (if the edge of the liquid crystal grating is a light-transmission region, the number of the non-light-transmission regions adjacent to the light-transmission region is one), or may be two; for a light-transmitting area with two adjacent non-light-transmitting areas, taking the driving voltage determined according to the position information of the left eye or the right eye of the viewer relative to the light-transmitting area as the current driving voltage of the strip-shaped electrode structure in one non-light-transmitting area adjacent to the light-transmitting area;
preferably, for each light-transmitting region having two adjacent non-light-transmitting regions, the driving voltage determined according to the position information of the left eye or the right eye of the viewer relative to each light-transmitting region is respectively used as the current driving voltage of the strip-shaped electrode structure in one non-light-transmitting region adjacent to the same side of each light-transmitting region, for example, the non-light-transmitting region adjacent to the left of each light-transmitting region or the non-light-transmitting region adjacent to the right of each light-transmitting region.
As another implementation form, the adjusting the size of the light-transmitting area corresponding to each piece of current position information in step 92 further includes:
and for each determined current position information, when the current position information is determined to be beyond the set threshold range, determining the driving voltage corresponding to the current position information according to the corresponding relation between the position information and the driving voltage, and taking the determined driving voltage as the current driving voltage of the strip-shaped electrode structure in the non-light-transmitting area adjacent to the light-transmitting area corresponding to the current position information.
Preferably, the position information is an angle value of an included angle between light rays which penetrate through each light-transmitting area of the liquid crystal grating and enter the left eye or the right eye of the viewer and a plane where the liquid crystal grating is located;
in the embodiment of the invention, the direction of the included angle between the light of the left eye or the right eye of the viewer and each light-transmitting area of the liquid crystal grating is not limited;
the angle value of the included angle of the light penetrating through each light-transmitting area and entering the left eye or the right eye of the viewer relative to the same direction of each light-transmitting area of the liquid crystal grating can be selected as the position information of the embodiment of the invention, and the angle value of the included angle of the light penetrating through each light-transmitting area and entering the left eye or the right eye of the viewer relative to each light-transmitting area of the liquid crystal grating, which is an acute angle, can also be selected as the position information of the embodiment of the invention.
The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.
In the embodiment of the invention, each strip electrode structure of the liquid crystal grating is connected with the driving circuit through different control lines, and in the three-dimensional display mode, the driving circuit respectively adjusts the width of each light-transmitting area of the liquid crystal grating according to the current position information of the left eye or the right eye of a viewer relative to each light-transmitting area of the driving circuit, so that in the three-dimensional display mode, the crosstalk phenomenon can be effectively reduced, and the viewing angle of the viewer can be improved.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. A liquid crystal grating comprises a first substrate, a second substrate and a liquid crystal layer positioned between the first substrate and the second substrate, wherein a plurality of strip-shaped electrode structures which are arranged at equal intervals are arranged on the first substrate and/or the second substrate; it is characterized in that the preparation method is characterized in that,
each strip-shaped electrode structure is connected with a driving circuit of the liquid crystal grating through different control lines; in a three-dimensional display mode, the liquid crystal grating adjusts the size of each light-transmitting area corresponding to the current position information according to the current position information of each light-transmitting area of the left eye or the right eye of the viewer relative to the liquid crystal grating.
2. The liquid crystal grating according to claim 1, wherein for each determined current position information, the driving circuit of the liquid crystal grating determines a driving voltage corresponding to the current position information according to a corresponding relationship between the position information and the driving voltage, uses the determined driving voltage as a current driving voltage of the strip electrode structure in a non-light-transmission region adjacent to a light-transmission region corresponding to the current position information, and applies the determined driving voltage to the strip electrode structure through a control line connected to the strip electrode structure.
3. The liquid crystal grating of claim 2, wherein for each determined current position information, the driving circuit determines a driving voltage corresponding to the current position information when determining that the current position information is beyond a set threshold range.
4. The liquid crystal grating of any one of claims 1 to 3, wherein the position information is an angle value of an included angle between a light ray passing through each light-transmitting region of the liquid crystal grating and entering a left eye or a right eye of a viewer with respect to a plane in which the liquid crystal grating is located.
5. A stereoscopic display apparatus comprising a display panel, a human eye tracking device and a liquid crystal grating according to any one of claims 1 to 4;
in the three-dimensional display mode, the human eye tracking device is used for determining current position information of a left eye or a right eye of a viewer relative to each light-transmitting area of the liquid crystal grating and transmitting each determined current position information to a driving circuit of the liquid crystal grating.
6. The stereoscopic display apparatus according to claim 5, wherein if the display panel is a liquid crystal panel, the liquid crystal grating is located at a light-emitting side of the liquid crystal display panel; or the liquid crystal grating is positioned between the liquid crystal display panel and the backlight module of the three-dimensional display device;
if the display panel is an organic electroluminescence OLED display panel, the liquid crystal grating is positioned on the light-emitting side of the OLED display panel.
7. A driving method of a liquid crystal grating is characterized by comprising the following steps:
acquiring current position information of a left eye or a right eye of a viewer relative to each light-transmitting area of the liquid crystal grating in a three-dimensional display mode; and
and adjusting the size of the light-transmitting area corresponding to each piece of current position information according to the determined current position information.
8. The method for driving a liquid crystal grating according to claim 7, wherein the adjusting the size of the light-transmitting area corresponding to each piece of current position information further comprises:
and for each determined current position information, determining a driving voltage corresponding to the current position information according to the corresponding relation between the position information and the driving voltage, and taking the determined driving voltage as the current driving voltage of the strip-shaped electrode structure in one non-light-transmitting area adjacent to the light-transmitting area corresponding to the current position information.
9. The method for driving a liquid crystal grating according to claim 8, wherein the determining the driving voltage corresponding to the current position information further comprises:
and for each determined current position information, when the current position information is determined to exceed the set threshold range, determining the driving voltage corresponding to the current position information according to the corresponding relation between the position information and the driving voltage.
10. The method according to any one of claims 7 to 9, wherein the position information is an angle value of an angle between a light ray passing through each light-transmitting region of the liquid crystal grating and entering a left eye or a right eye of a viewer with respect to a plane in which the liquid crystal grating is located.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210526264.1A CN103048835B (en) | 2012-12-07 | 2012-12-07 | Liquid crystal grating, driving method of the liquid crystal grating and three-dimensional display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210526264.1A CN103048835B (en) | 2012-12-07 | 2012-12-07 | Liquid crystal grating, driving method of the liquid crystal grating and three-dimensional display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103048835A true CN103048835A (en) | 2013-04-17 |
| CN103048835B CN103048835B (en) | 2015-04-15 |
Family
ID=48061530
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210526264.1A Active CN103048835B (en) | 2012-12-07 | 2012-12-07 | Liquid crystal grating, driving method of the liquid crystal grating and three-dimensional display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103048835B (en) |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103345082A (en) * | 2013-07-05 | 2013-10-09 | 深圳超多维光电子有限公司 | Liquid crystal lens, stereo display method and stereo display device |
| CN103389582A (en) * | 2013-07-23 | 2013-11-13 | 京东方科技集团股份有限公司 | Display device and display method thereof |
| CN103533340A (en) * | 2013-10-25 | 2014-01-22 | 深圳市汉普电子技术开发有限公司 | Naked eye 3D (three-dimensional) playing method of mobile terminal and mobile terminal |
| CN104241324A (en) * | 2013-06-05 | 2014-12-24 | 索尼公司 | Display unit and electronic apparatus |
| CN104459856A (en) * | 2013-09-22 | 2015-03-25 | 深圳市Tcl高新技术开发有限公司 | Raster graphic film, three-dimensional optical grating and naked eye 3D display device |
| WO2015078161A1 (en) * | 2013-11-27 | 2015-06-04 | 南京大学 | Unassisted stereoscopic display device using directional backlight structure |
| CN105100783A (en) * | 2015-08-19 | 2015-11-25 | 京东方科技集团股份有限公司 | 3D display device and 3D display method |
| WO2016019671A1 (en) * | 2014-08-08 | 2016-02-11 | 京东方科技集团股份有限公司 | Active grating, 3d display device and 3d display method |
| CN105334676A (en) * | 2014-07-11 | 2016-02-17 | 深圳市亿思达科技集团有限公司 | Liquid crystal grating, stereo display device and drive method of stereo display device |
| WO2016187984A1 (en) * | 2015-05-25 | 2016-12-01 | 京东方科技集团股份有限公司 | 2d/3d switchable display panel, and display method and display device therefor |
| WO2017118204A1 (en) * | 2016-01-05 | 2017-07-13 | 京东方科技集团股份有限公司 | Display device and three-dimensional display method therefor |
| WO2018000861A1 (en) * | 2016-06-29 | 2018-01-04 | 畅丽萍 | Display device and method for manufacturing same |
| CN108540791A (en) * | 2018-04-25 | 2018-09-14 | 京东方科技集团股份有限公司 | A kind of dual view display method and device |
| CN108572489A (en) * | 2018-04-28 | 2018-09-25 | 京东方科技集团股份有限公司 | Liquid crystal grating and liquid crystal grating driving method and 3D display device |
| CN109581779A (en) * | 2017-09-28 | 2019-04-05 | 京东方科技集团股份有限公司 | Liquid crystal grating and its driving method, display device |
| CN110223644A (en) * | 2018-03-02 | 2019-09-10 | 京东方科技集团股份有限公司 | Display device, virtual reality device and driving method |
| CN111123545A (en) * | 2018-10-15 | 2020-05-08 | 青海荟源工贸有限公司 | 3D television based on electronic grating |
| CN112666762A (en) * | 2020-12-28 | 2021-04-16 | 厦门天马微电子有限公司 | Liquid crystal grating and holographic three-dimensional display device |
| US12130452B2 (en) | 2022-01-26 | 2024-10-29 | Hefei Boe Optoelectronics Technology Co., Ltd. | Grating adjusting apparatus and 3D display apparatus |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120032197A (en) * | 2010-09-28 | 2012-04-05 | 삼성전자주식회사 | Three dimensional image display |
| CN102436101A (en) * | 2011-12-26 | 2012-05-02 | 天马微电子股份有限公司 | Liquid crystal lens grating and three-dimensional display device |
| US20120170115A1 (en) * | 2010-12-31 | 2012-07-05 | Boe Technology Group Co., Ltd. | Parallax barrier, display pannel and method of manufacturing a parallax barrier |
| CN102650742A (en) * | 2012-05-16 | 2012-08-29 | 天马微电子股份有限公司 | Free three-dimensional display device and method |
| CN102736255A (en) * | 2012-06-05 | 2012-10-17 | 深圳市亿思达显示科技有限公司 | Stereo display device and optical grating system applied to same |
-
2012
- 2012-12-07 CN CN201210526264.1A patent/CN103048835B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20120032197A (en) * | 2010-09-28 | 2012-04-05 | 삼성전자주식회사 | Three dimensional image display |
| US20120170115A1 (en) * | 2010-12-31 | 2012-07-05 | Boe Technology Group Co., Ltd. | Parallax barrier, display pannel and method of manufacturing a parallax barrier |
| CN102436101A (en) * | 2011-12-26 | 2012-05-02 | 天马微电子股份有限公司 | Liquid crystal lens grating and three-dimensional display device |
| CN102650742A (en) * | 2012-05-16 | 2012-08-29 | 天马微电子股份有限公司 | Free three-dimensional display device and method |
| CN102736255A (en) * | 2012-06-05 | 2012-10-17 | 深圳市亿思达显示科技有限公司 | Stereo display device and optical grating system applied to same |
Cited By (29)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104241324A (en) * | 2013-06-05 | 2014-12-24 | 索尼公司 | Display unit and electronic apparatus |
| CN104241324B (en) * | 2013-06-05 | 2017-08-11 | 株式会社日本有机雷特显示器 | Display unit and electronic equipment |
| CN103345082A (en) * | 2013-07-05 | 2013-10-09 | 深圳超多维光电子有限公司 | Liquid crystal lens, stereo display method and stereo display device |
| CN103389582A (en) * | 2013-07-23 | 2013-11-13 | 京东方科技集团股份有限公司 | Display device and display method thereof |
| CN104459856A (en) * | 2013-09-22 | 2015-03-25 | 深圳市Tcl高新技术开发有限公司 | Raster graphic film, three-dimensional optical grating and naked eye 3D display device |
| CN104459856B (en) * | 2013-09-22 | 2017-10-24 | 深圳市Tcl高新技术开发有限公司 | A kind of raster graphic film, 3 D grating and bore hole 3D display device |
| CN103533340A (en) * | 2013-10-25 | 2014-01-22 | 深圳市汉普电子技术开发有限公司 | Naked eye 3D (three-dimensional) playing method of mobile terminal and mobile terminal |
| CN103533340B (en) * | 2013-10-25 | 2016-04-06 | 深圳市汉普电子技术开发有限公司 | The bore hole 3D player method of mobile terminal and mobile terminal |
| WO2015078161A1 (en) * | 2013-11-27 | 2015-06-04 | 南京大学 | Unassisted stereoscopic display device using directional backlight structure |
| CN105334676A (en) * | 2014-07-11 | 2016-02-17 | 深圳市亿思达科技集团有限公司 | Liquid crystal grating, stereo display device and drive method of stereo display device |
| WO2016019671A1 (en) * | 2014-08-08 | 2016-02-11 | 京东方科技集团股份有限公司 | Active grating, 3d display device and 3d display method |
| US10200682B2 (en) | 2014-08-08 | 2019-02-05 | Boe Technology Group Co., Ltd. | Active grating, three-dimensional display device and three-dimensional display method |
| US9874763B2 (en) | 2015-05-25 | 2018-01-23 | Boe Technology Group Co., Ltd. | 2D/3D switchable display panel, and display method and display device thereof |
| WO2016187984A1 (en) * | 2015-05-25 | 2016-12-01 | 京东方科技集团股份有限公司 | 2d/3d switchable display panel, and display method and display device therefor |
| US10419746B2 (en) | 2015-08-19 | 2019-09-17 | Boe Technology Group Co., Ltd. | 3D display apparatus and 3D display method |
| CN105100783A (en) * | 2015-08-19 | 2015-11-25 | 京东方科技集团股份有限公司 | 3D display device and 3D display method |
| WO2017118204A1 (en) * | 2016-01-05 | 2017-07-13 | 京东方科技集团股份有限公司 | Display device and three-dimensional display method therefor |
| US10558054B2 (en) | 2016-01-05 | 2020-02-11 | Boe Technology Group Co., Ltd. | Display apparatus and three-dimensional display method thereof |
| WO2018000861A1 (en) * | 2016-06-29 | 2018-01-04 | 畅丽萍 | Display device and method for manufacturing same |
| CN109581779A (en) * | 2017-09-28 | 2019-04-05 | 京东方科技集团股份有限公司 | Liquid crystal grating and its driving method, display device |
| US10859879B2 (en) | 2017-09-28 | 2020-12-08 | Boe Technology Group Co., Ltd. | Liquid crystal grating and driving method thereof, display device |
| CN110223644A (en) * | 2018-03-02 | 2019-09-10 | 京东方科技集团股份有限公司 | Display device, virtual reality device and driving method |
| CN108540791A (en) * | 2018-04-25 | 2018-09-14 | 京东方科技集团股份有限公司 | A kind of dual view display method and device |
| US11385520B2 (en) | 2018-04-25 | 2022-07-12 | Boe Technology Group Co., Ltd. | Dual-view display method and device, and non-transitory computer readable storage medium |
| CN108572489A (en) * | 2018-04-28 | 2018-09-25 | 京东方科技集团股份有限公司 | Liquid crystal grating and liquid crystal grating driving method and 3D display device |
| CN111123545A (en) * | 2018-10-15 | 2020-05-08 | 青海荟源工贸有限公司 | 3D television based on electronic grating |
| CN112666762A (en) * | 2020-12-28 | 2021-04-16 | 厦门天马微电子有限公司 | Liquid crystal grating and holographic three-dimensional display device |
| CN112666762B (en) * | 2020-12-28 | 2022-08-16 | 厦门天马微电子有限公司 | Liquid crystal grating and holographic three-dimensional display device |
| US12130452B2 (en) | 2022-01-26 | 2024-10-29 | Hefei Boe Optoelectronics Technology Co., Ltd. | Grating adjusting apparatus and 3D display apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103048835B (en) | 2015-04-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103048835B (en) | Liquid crystal grating, driving method of the liquid crystal grating and three-dimensional display device | |
| KR101722661B1 (en) | 2d/3d switchable display device | |
| CN202939389U (en) | Liquid crystal grating and stereo display device | |
| KR101852121B1 (en) | Display device | |
| US9057909B2 (en) | Liquid crystal lens and 3D display device | |
| TWI482999B (en) | Stereoscopic display apparatus | |
| JP5944616B2 (en) | Optical unit and display device including the same | |
| US11002983B2 (en) | Switching parallax barrier comprising a plurality of first and second electrodes respectively on a blocking region and a transmitting region and 3D display device having the same | |
| CN102253563A (en) | Electrically driven liquid crystal lens with optimized visual angle and stereoscopic display device thereof | |
| JP6200789B2 (en) | Display device | |
| CN102749769A (en) | 2D/3D switchable free stereo display device based on double-layer liquid crystal lenses | |
| CN102830495A (en) | 3D (Three Dimensional) display device | |
| US9316844B2 (en) | 3D display apparatus and method for manufacturing the same | |
| CN102778777B (en) | Display panel of stereoscopic image display | |
| KR20120059953A (en) | 3 Dimensional Display Device Having Patterned Retarder Reducing Cross-Talk | |
| KR20120075319A (en) | Image display device | |
| KR101861616B1 (en) | Liquid crystal display device and method of fabricating thereof | |
| US20140133025A1 (en) | Stereoscopic display device and method for forming the same | |
| US9081198B2 (en) | Liquid crystal lens and stereo display device | |
| US9575326B2 (en) | Stereoscopic image display apparatus | |
| KR20120125001A (en) | Image display device | |
| KR101910963B1 (en) | Film patterned retarder stereoscopic 3d display device | |
| KR101792577B1 (en) | Liquid crystal display device | |
| KR101246687B1 (en) | Apparatus for Optical Sheet and Method for Preparing the Optical Sheet Using the Apparatus | |
| KR100811818B1 (en) | Lenticular LC shutter for 2D/3D image display and diplay device having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |