CN111948839A - Display device and driving method thereof - Google Patents
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- CN111948839A CN111948839A CN202010868350.5A CN202010868350A CN111948839A CN 111948839 A CN111948839 A CN 111948839A CN 202010868350 A CN202010868350 A CN 202010868350A CN 111948839 A CN111948839 A CN 111948839A
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 426
- 210000002858 crystal cell Anatomy 0.000 claims abstract description 101
- 239000000758 substrate Substances 0.000 claims description 109
- 230000001154 acute effect Effects 0.000 claims description 7
- 210000004027 cell Anatomy 0.000 claims description 3
- 239000010408 film Substances 0.000 description 40
- 230000000007 visual effect Effects 0.000 description 14
- 238000010586 diagram Methods 0.000 description 13
- 230000005684 electric field Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
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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
- G02F1/1323—Arrangements for providing a switchable viewing angle
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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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
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
- G02F1/13475—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which at least one liquid crystal cell or layer is doped with a pleochroic dye, e.g. GH-LC cell
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- Crystallography & Structural Chemistry (AREA)
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Abstract
The invention provides a display device and a driving method thereof, and relates to the technical field of display. The display device comprises a display panel, a first dye liquid crystal box and a second dye liquid crystal box, wherein the first dye liquid crystal box comprises a first dye liquid crystal layer, the first dye liquid crystal layer comprises first liquid crystal molecules and first dye molecules, and the first liquid crystal molecules and the first dye molecules have first pretilt angles; the second dye liquid crystal box comprises a second dye liquid crystal layer, the second dye liquid crystal layer comprises second liquid crystal molecules and second dye molecules, and the second liquid crystal molecules and the second dye molecules have second pretilt angles; the first pretilt angle and the second pretilt angle are angles which are deflected in the direction which is perpendicular to the first liquid crystal cell direction, and the long axis of the first liquid crystal molecule and the long axis of the second liquid crystal molecule are respectively far away from the direction which is perpendicular to the display device, so that the display device can realize mode-switchable dual-view display.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a display device and a driving method thereof.
Background
The dual-view display is that two kinds of display information can be seen under different viewing angles of the display screen, and compared with the traditional display mode, the utilization rate of the display panel is increased. At present, in the prior art, the grating is arranged on the light emitting surface of the display panel, and the grating and the display device are matched to realize double-view angle display, so that the double-view angle crosstalk is large in the prior art, for example, a picture observed from a first view angle has information of a picture of a second view angle, a picture observed from the second view angle has information of a picture of the first view angle, the watching quality is influenced, and in addition, the display mode of the double-view angle display cannot be switched.
Disclosure of Invention
The invention provides a display device and a driving method thereof, which can improve the taste of dual-view display and can freely switch the display mode.
First, an embodiment of the present invention provides a display device, including a display panel;
the liquid crystal display panel comprises a first dye liquid crystal box and a second dye liquid crystal box, wherein the first dye liquid crystal box comprises a first substrate, a second substrate and a first dye liquid crystal layer clamped between the first substrate and the second substrate, the first substrate is provided with a first alignment film close to the first dye liquid crystal layer, a first electrode is arranged between the first substrate and the first alignment film, the second substrate is provided with a second alignment film close to the first dye liquid crystal layer, and a second electrode is arranged between the second substrate and the second alignment film; the first dye liquid crystal layer comprises first liquid crystal molecules and first dye molecules, and the first liquid crystal molecules and the first dye molecules have first pretilt angles;
the second dye liquid crystal box comprises a third substrate, a fourth substrate and a second dye liquid crystal layer clamped between the third substrate and the fourth substrate, wherein the third substrate is provided with a third alignment film close to the second dye liquid crystal layer, a third electrode is arranged between the third substrate and the third alignment film, the fourth substrate is provided with a fourth alignment film close to the second dye liquid crystal layer, and a fourth electrode is arranged between the fourth substrate and the fourth alignment film; the second dye liquid crystal layer comprises second liquid crystal molecules and second dye molecules, and the second liquid crystal molecules and the second dye molecules have second pretilt angles; the first pretilt angle and the second pretilt angle are angles deflected in a direction perpendicular to the first liquid crystal cell direction, and the long axis of the first liquid crystal molecule and the long axis of the second liquid crystal molecule respectively deflect in a direction far away from the direction perpendicular to the display device;
the first dye liquid crystal box and the second dye liquid crystal box control the light emitting and/or light entering direction of the display panel;
the display panel is used for displaying images.
Secondly, the embodiment of the invention also provides a driving method of the display device, which comprises a display panel;
the liquid crystal display panel comprises a first dye liquid crystal box and a second dye liquid crystal box, wherein the first dye liquid crystal box comprises a first substrate, a second substrate and a first dye liquid crystal layer clamped between the first substrate and the second substrate, the first substrate is provided with a first alignment film close to the first dye liquid crystal layer, a first electrode is arranged between the first substrate and the first alignment film, the second substrate is provided with a second alignment film close to the first dye liquid crystal layer, and a second electrode is arranged between the second substrate and the second alignment film; the first dye liquid crystal layer comprises first liquid crystal molecules and first dye molecules, and the first liquid crystal molecules and the first dye molecules have first pretilt angles;
the second dye liquid crystal box comprises a third substrate, a fourth substrate and a second dye liquid crystal layer clamped between the third substrate and the fourth substrate, wherein the third substrate is provided with a third alignment film close to the second dye liquid crystal layer, a third electrode is arranged between the third substrate and the third alignment film, the fourth substrate is provided with a fourth alignment film close to the second dye liquid crystal layer, and a fourth electrode is arranged between the fourth substrate and the fourth alignment film; the second dye liquid crystal layer comprises second liquid crystal molecules and second dye molecules, and the second liquid crystal molecules and the second dye molecules have second pretilt angles; the first pretilt angle and the second pretilt angle are angles deflected towards two sides far away from the direction vertical to the display device respectively along the direction vertical to the first liquid crystal cell, and the long axis of the first liquid crystal molecule and the long axis of the second liquid crystal molecule;
providing a voltage to the first electrode and the second electrode and/or providing a voltage to the third electrode and the fourth electrode, so that the first dye liquid crystal box and the second dye liquid crystal box control the light emitting and/or light entering direction of the display panel;
the display panel is used for displaying images
According to the display device and the driving method thereof provided by the embodiment of the invention, the pretilt angles of the first dye liquid crystal box and the second dye liquid crystal box are controlled to be different, the first dye molecule and the second dye molecule are deflected towards different directions by applying control voltage to the first dye liquid crystal box and the second dye liquid crystal box, the light emission of the display panel is regulated and controlled, and the switching display of different visual angles of the display device can be realized, including the different switching of modes such as the display of double visual angles, the display of single-side visual angles, the display of front visual angles and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 8 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 10 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 11 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 12 is a schematic structural diagram of another display device according to an embodiment of the invention;
fig. 13 is a front view angle luminance distribution curve of still another display device according to an embodiment of the present invention;
FIG. 14 is a second viewing angle luminance distribution curve of another display device according to an embodiment of the present invention;
fig. 15 is a first viewing angle luminance distribution curve of another display device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a schematic structural diagram of a display device according to an embodiment of the present invention is shown, where the display device includes a display panel 300; the liquid crystal display panel comprises a first dye liquid crystal box, a second dye liquid crystal box and a liquid crystal layer, wherein the first dye liquid crystal box comprises a first substrate 10, a second substrate 20 and a first dye liquid crystal layer clamped between the first substrate and the second substrate, the first substrate 10 is provided with a first alignment film 12 close to the first dye liquid crystal layer, a first electrode 11 arranged between the first substrate 10 and the first alignment film 12, the second substrate 20 is provided with a second alignment film 22 close to the first dye liquid crystal layer, and a second electrode 21 arranged between the second substrate 20 and the second alignment film 22; the first dye liquid crystal layer comprises first liquid crystal molecules 111 and first dye molecules 110, and the first liquid crystal molecules 111 and the first dye molecules 111 have first pretilt angles; the first alignment film 12 and the second alignment film 22 of the present invention may be optically aligned or rubbing aligned such that the first liquid crystal molecules 111 have a first pretilt angle when the liquid crystal is disposed on the alignment film, and the first liquid crystal molecules 111 may be driven to rotate when there is a voltage difference between the first electrode 11 and the second electrode 21, and the first liquid crystal molecules may be tilted along one side due to the first pretilt angle.
A second dye liquid crystal box, which comprises a third substrate 30, a fourth substrate 40 and a second dye liquid crystal layer clamped between the third substrate 30 and the fourth substrate 40, wherein the third substrate 30 is provided with a third alignment film 32 close to the second dye liquid crystal layer, a third electrode 31 arranged between the third substrate 30 and the third alignment film 32, the fourth substrate 40 is provided with a fourth alignment film 42 close to the second dye liquid crystal layer, and a fourth electrode 41 arranged between the fourth substrate 40 and the fourth alignment film 42; the second dye liquid crystal layer includes second liquid crystal molecules 221 and second dye molecules 220, and the second liquid crystal molecules 221 and the second dye molecules 220 have a second pretilt angle; the first pretilt angle and the second pretilt angle are angles which are deflected along a direction perpendicular to the first liquid crystal cell, and the long axes of the first liquid crystal molecules 111 and the long axes of the second liquid crystal molecules 221 are respectively far away from the direction perpendicular to the display device; the first dye liquid crystal cell and the second dye liquid crystal cell control light outgoing and/or light incoming directions of the display panel 300; the display panel 300 is used to display an image; the third alignment film 32 and the fourth alignment film 42 of the present invention may be formed by photo-alignment or rubbing-alignment, etc. such that the second liquid crystal molecules 221 have a second pretilt angle when the liquid crystal is disposed on the alignment film, and the second liquid crystal molecules 221 may be driven to rotate when there is a voltage difference between the third electrode 31 and the fourth electrode 41, and the second pretilt angle causes the second liquid crystal molecules to tilt along one side, and the direction in which the voltage is applied to the second liquid crystal molecules is different from the direction in which the voltage is applied to the first liquid crystal molecules. The first electrode, the second electrode, the third electrode, and the fourth electrode are all-surface electrodes.
In the embodiment of the present invention, the first liquid crystal molecules 111 and the second liquid crystal molecules 221 have dielectric and refractive index anisotropy, so that the alignment direction of the liquid crystal molecules can be changed by the action of an electric field, and when the first dye molecules 110 and the second dye molecules 220 are dissolved in the bulk of the aligned first liquid crystal molecules 111 and the aligned second liquid crystal molecules 221, respectively, the dye molecules will be "guest-host-transfer" and aligned in the same direction as the liquid crystal molecules. Under the action of an electric field, the liquid crystal molecules as "host" may deflect at a certain angle, and the dye molecules as "guest" may deflect at the same angle along with the deflection of the liquid crystal molecules, thereby showing the characteristic of a host-slave host.
In order to more clearly embody the first pretilt angle and the second pretilt angle, see fig. 1 and fig. 2, where reference numerals of the same drawing structure as fig. 1 in fig. 2 refer to fig. 1, where the first pretilt angle is a1, and the second pretilt angle is b1, that is, the first pretilt angle a1 and the second pretilt angle b1 are angles at which the long axis of the first liquid crystal molecule 111 and the long axis of the second liquid crystal molecule 221 are respectively deflected away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal cell or the direction perpendicular to the display device, and due to the existence of the pretilt angles, when a voltage is applied to the first dye liquid crystal cell, that is, when a voltage difference is applied to the first electrode 11 and the second electrode 21, the long axis of the first liquid crystal molecule 111 and the long axis of the first dye molecule 110 are deflected to the left side, and if the display panel displays an image, image information of the display panel cannot be observed from the right side, since light will be absorbed by the first dye molecule 110; when a voltage is applied to the second dye liquid crystal cell, that is, when a voltage difference is generated between the third electrode 31 and the fourth electrode 41, the long axis of the second liquid crystal molecule 221 is deflected to the left side, and at this time, if the display panel displays an image, image information of the display panel cannot be observed from the left side, since light is absorbed by the second dye molecule 220, that is, the long axis of the first liquid crystal molecule 111 and the long axis of the second liquid crystal molecule are respectively deflected to different directions, the light emitting direction and/or the light emitting direction of the display panel can be controlled, and dual-view angle display is realized.
With continued reference to fig. 1, the first dye cell and the second dye cell are placed in contact, and optionally bonded together by a transparent optical glue 50. The first dye liquid crystal box and the second dye liquid crystal box are sequentially arranged on one side of the light-emitting surface of the display panel 300 in a laminated manner, namely the first dye liquid crystal box and the second dye liquid crystal box control the light-emitting direction of the display panel 300, optionally, a linear polarizer 60 is arranged between the first dye liquid crystal box and the display panel 300, so that linearly polarized light emitted from the display panel is absorbed by dye when the polarized light passes through the dye liquid crystal and the polarization direction of the polarized light is parallel to the long axis direction of dye liquid crystal molecules; when the polarization direction of the polarized light is vertical to the long axis of the dye liquid crystal molecules, the polarized light can penetrate through the dye liquid crystal molecules, so that the light emitting direction of the display panel can be controlled by adjusting the deflection of the dye liquid crystal molecules.
Referring to fig. 3, the first dye liquid crystal cell and the second dye liquid crystal cell are sequentially stacked and disposed on a side of the light emitting surface away from the display panel 300, wherein the light emitting direction of the display panel is directed from the second dye liquid crystal cell to the side of the display panel 300.
Referring to fig. 1 and 4, when a voltage is applied to the first electrode 11 and the second electrode 21, such that the first liquid crystal molecule 111 deflects toward the first direction D1, and the first dye molecule also deflects toward the first direction D1, such that the first dye liquid crystal cell controls the display device to emit light along the first direction D1, and when no voltage is applied to the second dye liquid crystal cell, the long axes of the second liquid crystal molecule 221 and the second dye molecule 220 tend to be in a "standing" state, i.e., the long axes of the second liquid crystal molecule 221 and the second dye molecule 220 are aligned in a direction perpendicular to the display device, when the display panel 300 displays a first image, a viewer at a viewing angle in the first direction can see the first image, and when the display panel gives information to the first image all the time, the display device can realize a display at a single viewing angle, which can be considered as a display at a left viewing angle in the drawings; referring to fig. 1 and 5, when a voltage is applied to the third electrode 30 and the fourth electrode 40, such that the second liquid crystal molecule 221 deflects to the second direction D2, such that the second dye liquid crystal cell controls the display device to emit light along the second direction D2, and when no voltage is applied to the first dye liquid crystal cell, the long axes of the first liquid crystal molecule 111 and the first dye molecule 110 tend to stand in a "standing" direction, i.e., the long axes of the first liquid crystal molecule 111 and the first dye molecule 110 are aligned in a direction perpendicular to the display device, when the display panel 300 displays a second image, the second image can be seen by an observer at a viewing angle in the second direction, and when the display panel always provides second image information, the display device can achieve a display at a single viewing angle, which can be considered as a display at a right viewing angle in the drawings; the first direction D1 and the second direction D2 are directions along the direction perpendicular to the display device, in which the long axes of the first liquid crystal molecules 111 and the long axes of the second liquid crystal molecules 221 are respectively deflected to both sides away from the direction perpendicular to the display device. The optional first direction D1 and the second direction D2 are axisymmetrical with respect to a direction perpendicular to the display device, but of course, the first direction D1 and the second direction D2 may not be axisymmetrical, as long as the first direction and the second direction are respectively deflected toward both sides away from the direction perpendicular to the display device. When the first display picture and the second display picture of the display panel are controlled to be alternately given and the refreshing frequency reaches the value that human eyes cannot recognize picture switching, the display device can realize the display of double visual angles, namely the first display picture can be observed under a left visual angle and the second display picture can be observed under a second visual angle; when the display panel is controlled to provide a first picture or a second picture, the first liquid crystal molecules and the second liquid crystal molecules of the first dye liquid crystal box and the second dye liquid crystal box are controlled to be in a standing state, when the first display picture or the second display picture of the display panel can be observed under a front viewing angle, and the picture observed at the front viewing angle has a narrower viewing angle range and plays a certain peeping-proof role compared with the traditional display, but has a wider viewing angle than a single-side viewing angle. Therefore, the display device can realize free switching of different visual angles, and application scenes are diversified.
The display device provided by the invention is any one of a liquid crystal display device, an organic light emitting diode display device and an inorganic light emitting diode display device, namely, the display panel can be a liquid crystal display panel, an organic light emitting display panel, a micro-LED display panel, a mini-LED display panel and the like, and is not limited herein.
Referring to fig. 1 and 2, the first pretilt a1 is in an angle range of 0.1 to 5 °, the second pretilt b1 is in an angle range of 0.1 to 5 °, inclusive, e.g., the first pretilt a1 and the second pretilt b1 are in an angle of 1 °, wherein the first liquid crystal molecule 110 and the second liquid crystal molecule 220 are negative liquid crystal molecules. When the first liquid crystal molecule 111 and the second liquid crystal molecule 221 are negative liquid crystals and no voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be aligned approximately perpendicular to the display device direction, that is, the long axes of the liquid crystal molecules are in a "standing" state, when a voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, the first liquid crystal molecule 111 and the second liquid crystal molecule 221 are deflected, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be inclined perpendicular to the electric field direction, when a certain voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be aligned approximately parallel to the display device direction, see fig. 5, that the long axes of the liquid crystal molecules are in a "lying" state, at this time, light emitted by the display panel is absorbed by the dye molecules in the dye liquid crystal, the display device is thus in the black mode.
Referring to fig. 1 and 7, the first pretilt a1 is in an angle range of 85-89.9 °, the second pretilt b1 is in an angle range of 85-89.9 °, inclusive, e.g., the first pretilt a1 and the second pretilt b1 are in an angle of 89 °, wherein the first liquid crystal molecule 110 and the second liquid crystal molecule 220 are positive liquid crystal molecules. When the first liquid crystal molecule 111 and the second liquid crystal molecule 221 are positive liquid crystals and no voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be aligned approximately parallel to the display device direction, that is, the long axes of the liquid crystal molecules are in a "flat" state, and at this time, light emitted from the display panel is absorbed by the dye molecules in the dye liquid crystal cell, so that the display device is in a black state mode, when a voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, the first liquid crystal molecule 111 and the second liquid crystal molecule 221 are deflected, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be inclined parallel to the electric field direction, and when a certain voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be aligned perpendicular to the display device, the light emitted by the display panel can be transmitted by the dye liquid crystal cell.
Referring to fig. 8, the display device provided by the present invention may further use the second substrate as the third substrate, that is, when the first dye liquid crystal cell and the second dye liquid crystal cell are stacked, the two dye liquid crystal cells share one substrate, and at this time, the display device may be thinned, and during the manufacturing process, the second electrode layer 21 and the second alignment film 22 may be first prepared on one side of the second substrate 20, and then the third electrode layer 31 and the third alignment film 32 may be prepared on the other side of the second substrate 20.
In the display device provided by the present invention, the display panel 300 is disposed between the first dye liquid crystal cell and the second dye liquid crystal cell, and the linear polarizer 61 is disposed on the light emitting surface side of the display panel 300, referring to fig. 9, optionally, when the display panel is a liquid crystal display panel, the display panel further includes a linear polarizer 62, that is, an upper polarizer and a lower polarizer, and a backlight module for providing a backlight source for the liquid crystal display panel, and the backlight module is disposed on the side (not shown) of the first dye liquid crystal cell away from the display panel 300.
Referring to fig. 10, when the display panel is a liquid crystal display panel, the display panel 300 includes a fifth substrate 100 and a sixth substrate 200, and a liquid crystal layer 331 sandwiched between the fifth substrate 100 and the sixth substrate 200, and further includes a polarizer 61 and a polarizer 62, where the liquid crystal layer 331 may be the same as or different from the first liquid crystal molecules 111 and the second liquid crystal molecules 221, and is not limited herein; note that the display mode of the display panel may be a TN mode, a VA mode, an IPS mode, an FFS mode, or the like, and is not limited herein, the fifth substrate 100 includes a driving electrode and a driving circuit, and the sixth substrate includes a color resistor, or the like, which are not shown in the drawings. In addition, the display device further includes a backlight module 400, which provides a backlight source for the liquid crystal display panel, and is only illustrated by a lateral light source in fig. 10, or may be a bottom light source, which is not limited herein, and the backlight module includes a backlight source, a back plate, a reflective sheet, a light guide plate, an optical film, and the like. In fig. 10, the backlight module 400, the display panel 300, the first dye liquid crystal cell and the second dye liquid crystal cell are sequentially stacked, wherein a transparent optical adhesive is disposed between the first dye liquid crystal cell and the second dye liquid crystal cell to attach the first dye liquid crystal cell and the second dye liquid crystal cell, and a transparent optical adhesive is disposed between the display panel 300 and the first dye liquid crystal cell to attach the first dye liquid crystal cell and the second dye liquid crystal cell.
Referring to fig. 11, the difference from fig. 10 is that the display device illustrated in fig. 11 includes a backlight module 400, a first dye liquid crystal cell, a second dye liquid crystal cell, and a display panel 300, which are sequentially stacked.
In the display device provided by the present invention, an included angle between a vertical projection of a long axis of the first liquid crystal molecule 111 on a preset plane and a vertical projection of a long axis of the second liquid crystal molecule 221 on the preset plane is 180 °, the preset plane is a plane parallel to the display panel, at this time, a double viewing angle of the display device, such as a left viewing angle and a right viewing angle, can be ensured, and when the display device is viewed in a position of an intermediate viewing angle, compared with an acute included angle between a vertical projection of a long axis of the first liquid crystal molecule 111 on the preset plane and a vertical projection of a long axis of the second liquid crystal molecule 221 on the preset plane, a display crosstalk area is smaller, the quality of the double viewing angle display is better, of course, an included angle between a vertical projection of a long axis of the first liquid crystal molecule 111 on the preset plane and a vertical projection of a long axis of the second liquid crystal molecule 221 on the preset plane can also be an acute angle or an obtuse angle, at this time, two viewing angles, the viewing angle is an acute angle or an obtuse angle, but the display of two viewing angles can still be realized, so that the angle range of the double viewing angles is set according to the actual requirement, and is not limited herein.
In the display device provided by the invention, the first dye liquid crystal box comprises a first driving circuit, the second dye liquid crystal box comprises a second driving circuit, the display panel comprises a third driving circuit, and the first driving circuit, the second driving circuit and the third driving circuit are electrically connected to the total driving circuit. Taking the liquid crystal display device as an illustration, referring to fig. 12, the display device includes a first driving circuit 13, a second driving circuit 23, and a third driving circuit 33, where the driving circuit may be a flexible circuit board or a driving IC, and is not limited herein, the first driving circuit 13, the second driving circuit 23, and the third driving circuit 33 are connected to a total driving circuit (not shown in the figure), at this time, the total driving circuit may be an FPC or a PCB, and the total driving circuit may control three liquid crystal cells to realize the display of the display panel 300, and the dimming of the first dye liquid crystal cell and the second dye liquid crystal cell, so as to finally realize the dual-view display.
The present invention also provides a driving method of a display device, referring to fig. 1, 3 and 9, the display device includes a display panel 300; the liquid crystal display panel comprises a first dye liquid crystal box, a second dye liquid crystal box and a liquid crystal layer, wherein the first dye liquid crystal box comprises a first substrate 10, a second substrate 20 and a first dye liquid crystal layer clamped between the first substrate and the second substrate, the first substrate 10 is provided with a first alignment film 12 close to the first dye liquid crystal layer, a first electrode 11 arranged between the first substrate 10 and the first alignment film 12, the second substrate 20 is provided with a second alignment film 22 close to the first dye liquid crystal layer, and a second electrode 21 arranged between the second substrate 20 and the second alignment film 22; the first dye liquid crystal layer comprises first liquid crystal molecules 111 and first dye molecules 110, and the first liquid crystal molecules 111 and the first dye molecules 111 have first pretilt angles;
a second dye liquid crystal box, which comprises a third substrate 30, a fourth substrate 40 and a second dye liquid crystal layer clamped between the third substrate 30 and the fourth substrate 40, wherein the third substrate 30 is provided with a third alignment film 32 close to the second dye liquid crystal layer, a third electrode 31 arranged between the third substrate 30 and the third alignment film 32, the fourth substrate 40 is provided with a fourth alignment film 42 close to the second dye liquid crystal layer, and a fourth electrode 41 arranged between the fourth substrate 40 and the fourth alignment film 42; the second dye liquid crystal layer includes second liquid crystal molecules 221 and second dye molecules 220, and the second liquid crystal molecules 221 and the second dye molecules 220 have a second pretilt angle; the first pretilt angle and the second pretilt angle are angles which are deflected along a direction perpendicular to the first liquid crystal cell, and the long axes of the first liquid crystal molecules 111 and the long axes of the second liquid crystal molecules 221 are respectively far away from the direction perpendicular to the display device; providing a voltage to the first electrode 11 and the second electrode 21 and/or providing a voltage to the third electrode 31 and the fourth electrode 41, so that the first dye liquid crystal cell and the second dye liquid crystal cell control the light emitting and/or light incident direction of the display panel; the display panel 300 is used to display an image, and the first electrode 11, the second electrode 21, the third electrode 31, and the fourth electrode 41 are full-surface electrodes.
When the display panel 300 is controlled to display a picture, the driving voltages of the electrodes of the first dye liquid crystal box and the second dye liquid crystal box are controlled to drive the first liquid crystal molecules 111 and the second liquid crystal molecules 221 to deflect, so that the light in the light emitting direction and/or the light incident direction of the display panel is regulated and controlled.
When the first liquid crystal molecules 111 and the second liquid crystal molecules 221 are negative liquid crystals, a voltage difference V1 is generated by applying a voltage to the first electrode 11 and the second electrode 21 and/or a voltage difference V2 is generated by applying a voltage to the third electrode 31 and the fourth electrode 41, and the long axes of the first liquid crystal molecules 111 are arranged in a direction parallel to the display device and/or the long axes of the second liquid crystal molecules 221 are arranged in a direction parallel to the display device. At this time, by controlling the long axes of the first liquid crystal molecule 111 and the first dye molecule 110 of the first dye liquid crystal cell to be in a flat state, or controlling the long axes of the second liquid crystal molecule 221 and the second dye molecule 220 of the second dye liquid crystal cell to be in a flat state, or simultaneously controlling the long axes of the liquid crystal molecules of the first dye liquid crystal cell and the second dye liquid crystal cell to be in a flat state, at this time, the light emitted from the display panel is absorbed by the first dye molecule 111 and/or the second dye molecule 221, and the display device presents a black picture, fig. 6 only illustrates that the dye molecules of the first dye liquid crystal cell and the second dye liquid crystal cell are in a flat state at the same time.
When the first and second liquid crystal molecules 111 and 221 are positive liquid crystals, a voltage difference V1 is generated by applying a voltage to the first and second electrodes 11 and 21 and/or a voltage difference V2 is generated by applying a voltage to the third and fourth electrodes 31 and 41, and the long axes of the first liquid crystal molecules 11 are arranged in a direction perpendicular to the display device and/or the long axes of the second liquid crystal molecules 221 are arranged in a direction perpendicular to the display device. At this time, the long axes of the first liquid crystal molecule 111 and the first dye molecule 110 of the first dye liquid crystal cell are controlled to stand, the long axes of the second liquid crystal molecule 221 and the second dye molecule 220 of the second dye liquid crystal cell are controlled to stand, or the long axes of the liquid crystal molecules of the first dye liquid crystal cell and the second dye liquid crystal cell are simultaneously controlled to stand. When the liquid crystal molecules of the first dye liquid crystal box and the second dye liquid crystal box simultaneously present a standing state, the display picture of the display panel can be observed under a full viewing angle.
For example, referring to fig. 4, when a voltage difference V3 is generated by applying a voltage to the first electrode 11 and the second electrode 21, a first included angle a is formed between the long axis of the first liquid crystal molecule 111 and a plane perpendicular to the first dye liquid crystal cell, where the first included angle a is an acute angle, and V3< V1, that is, the voltage of V3 is not enough to make the first liquid crystal molecule 111 lie down, at this time, if the second dye liquid crystal cell does not apply a voltage, the second liquid crystal molecule 221 and the second dye molecule 220 are in a standing state, if the display panel displays information of the first picture, an observer at a viewing angle in the first direction D1 can see the first picture information, that is, an observer at a left viewing angle in the figure can see the first picture information, and an observer at a right viewing angle cannot see the picture information.
Referring to fig. 5, when a voltage difference V4 is generated by applying a voltage to the third electrode 31 and the fourth electrode 41, a second included angle B is formed between the long axis of the second liquid crystal molecule 221 and a plane perpendicular to the second dye liquid crystal cell, where the second included angle B is an acute angle, and V4< V2, that is, the voltage of V4 is not enough to make the second liquid crystal molecule 221 lie down, at this time, if the first dye liquid crystal cell does not apply a voltage, the first liquid crystal molecule 111 and the first dye molecule 110 are in a standing state, and if the display panel displays information of the second picture, an observer at a viewing angle in the second direction D2 can see the second picture information, that is, the observer at a right viewing angle in the figure can see the second picture information, and the observer at a left viewing angle cannot see the picture information.
Referring to fig. 12, a first dye liquid crystal cell includes a first driving circuit 13, a second dye liquid crystal cell includes a second driving circuit 23, a display panel 300 includes a third driving circuit 33, the third driving circuit 33 provides a fifth voltage to the display panel 300, the display panel 300 displays a first picture and a sixth voltage to the display panel 300, the display panel 300 displays a second picture, and the first picture and the second picture are alternately displayed; the refresh frequency of the display panel 300 is f, the first driving circuit 21 controls the first liquid crystal molecules 111 to deflect for 1/f1 time when the display panel 300 displays a first picture, and the second driving circuit 21 controls the second liquid crystal molecules 221 to deflect for 1/f2 time when the display panel 300 displays a second picture, wherein f1+ f2 is f. For example, when the refresh frequency of the display panel is 120Hz, the first frame information is displayed in 1/120s, the second frame information is displayed in 1/120s, and the first frame information and the second frame information are alternated, i.e. the first frame information, the second frame information, etc. are sequentially alternated to the signal. When the display panel 300 displays the first picture information within 1/120s, the first dye liquid crystal cell is controlled to apply voltage to deflect the first liquid crystal molecules 111 towards the first direction D1, the second dye liquid crystal cell does not apply voltage, the second liquid crystal molecules 221 are in a standing state, and the first display picture information can be observed under the viewing angle of the first direction; next, in 1/120s, when the display panel 300 displays the second picture information, the second dye liquid crystal cell is controlled to apply a voltage to the second dye liquid crystal cell so that the first liquid crystal molecule 221 deflects towards the second direction D2, the first dye liquid crystal cell does not apply a voltage, the first liquid crystal molecule 221 is in a standing state, the first display picture information can be observed at the viewing angle of the second direction, and thus different picture information of the display panel is rapidly and alternately given to the display panel, which exceeds the resolution of human eyes, so that the display of the two viewing angles can be realized.
Alternatively, f1 ═ f 2; for example, when f is 120HZ, f1 ═ f2 ═ 60 HZ.
Referring to fig. 13, 14 and 15, fig. 13 is a front view angle luminance distribution curve of a further display device according to an embodiment of the present invention; FIG. 14 is a second viewing angle luminance distribution curve of another display device according to an embodiment of the present invention; FIG. 15 is a first viewing angle luminance distribution curve of another display device according to an embodiment of the present invention; referring to fig. 13, when the first liquid crystal molecules and the second liquid crystal molecules in the first dye liquid crystal cell and the second dye liquid crystal cell disposed in the display device are controlled to be in a "standing" state, for example, for the negative first liquid crystal and the negative second liquid crystal, no voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, so that the first liquid crystal molecules and the second liquid crystal molecules are in the "standing" state, when the display panel displays image information, an observer can see a display image of the display panel under a front viewing angle, where the display image seen under the front viewing angle has a narrower viewing angle compared with the conventional display, can play a certain peep-proof role, and has a wider viewing angle compared with a single-side viewing angle. Referring to fig. 14 and 5, when the second liquid crystal molecule 221 of the second dye liquid crystal cell is controlled to deflect towards the second direction D2, such that the second dye liquid crystal cell controls the display device to emit light along the second direction D2, and no voltage is applied to the first dye liquid crystal cell, the long axes of the first liquid crystal molecule 111 and the first dye molecule 110 tend to stand in a "standing" direction, when the display panel 300 displays an image, an observer at the viewing angle of the second direction can see the second image, although the first direction has a certain brightness, the brightness is less than or equal to one fifth of the brightness at the second viewing angle, the brightness of the first image is insufficient to generate crosstalk with respect to the image at the first viewing angle, and when the image can be displayed at the first viewing angle, the image at the second viewing angle is insufficient to be resolved by human eyes, so that the crosstalk is small, so that fig. 14 and 13 are different in that the luminance curve of the display device is shifted towards the right viewing angle, the brightness is larger under the right visual angle, although the brightness is also certain under the visual angle of the second direction, the brightness accounts for less than or equal to one fifth of the brightness of the first visual angle, the generated second picture brightness is insufficient to deal with the crosstalk generated on the picture of the second visual angle, and the picture of the first visual angle is insufficient to be distinguished by human eyes when the picture is displayed at the second visual angle, so that the crosstalk is smaller. Referring to fig. 15 and 4, when the first liquid crystal molecule 111 is controlled to deflect towards the first direction D1 and the first dye molecule is also controlled to deflect towards the first direction D1, so that the first dye liquid crystal cell controls the display device to emit light along the first direction D1, and no voltage is applied to the second dye liquid crystal cell at this time, the long axes of the second liquid crystal molecule 221 and the second dye molecule 220 tend to be in a "standing" state, and when the display panel 300 displays an image, the image can be seen by an observer at a viewing angle in the first direction, so that fig. 15 and 13 are different in that the luminance curve of the display device is shifted to a left viewing angle, and the luminance is greater at the left viewing angle.
The embodiment of the invention provides a display device and a driving method thereof, wherein the display device comprises a display panel, a first dye liquid crystal box and a second dye liquid crystal box, wherein the first dye liquid crystal box comprises a first dye liquid crystal layer, the first dye liquid crystal layer comprises first liquid crystal molecules and first dye molecules, and the first liquid crystal molecules and the first dye molecules have first pretilt angles; the second dye liquid crystal box comprises a second dye liquid crystal layer, the second dye liquid crystal layer comprises second liquid crystal molecules and second dye molecules, and the second liquid crystal molecules and the second dye molecules have second pretilt angles; the first pretilt angle and the second pretilt angle are angles which are deflected in the direction which is perpendicular to the first liquid crystal cell direction, and the long axis of the first liquid crystal molecule and the long axis of the second liquid crystal molecule are respectively far away from the direction which is perpendicular to the display device, so that the display device can realize mode-switchable dual-view display.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (21)
1. A display device, characterized in that:
comprises a display panel;
the liquid crystal display panel comprises a first dye liquid crystal box and a second dye liquid crystal box, wherein the first dye liquid crystal box comprises a first substrate, a second substrate and a first dye liquid crystal layer clamped between the first substrate and the second substrate, the first substrate is provided with a first alignment film close to the first dye liquid crystal layer, a first electrode is arranged between the first substrate and the first alignment film, the second substrate is provided with a second alignment film close to the first dye liquid crystal layer, and a second electrode is arranged between the second substrate and the second alignment film; the first dye liquid crystal layer comprises first liquid crystal molecules and first dye molecules, and the first liquid crystal molecules and the first dye molecules have first pretilt angles;
the second dye liquid crystal box comprises a third substrate, a fourth substrate and a second dye liquid crystal layer clamped between the third substrate and the fourth substrate, wherein the third substrate is provided with a third alignment film close to the second dye liquid crystal layer, a third electrode is arranged between the third substrate and the third alignment film, the fourth substrate is provided with a fourth alignment film close to the second dye liquid crystal layer, and a fourth electrode is arranged between the fourth substrate and the fourth alignment film; the second dye liquid crystal layer comprises second liquid crystal molecules and second dye molecules, and the second liquid crystal molecules and the second dye molecules have second pretilt angles; the first pretilt angle and the second pretilt angle are angles deflected in a direction perpendicular to the first liquid crystal cell direction, and the long axis of the first liquid crystal molecule and the long axis of the second liquid crystal molecule respectively deflect in a direction far away from the direction perpendicular to the display device;
the first dye liquid crystal box and the second dye liquid crystal box control the light emitting and/or light entering direction of the display panel;
the display panel is used for displaying images.
2. The display device of claim 1, wherein the first dye liquid crystal cell and the second dye liquid crystal cell are disposed in contact.
3. The display device according to claim 2, wherein the first dye liquid crystal cell and the second dye liquid crystal cell are sequentially stacked on a light emitting surface side of the display panel.
4. The display device according to claim 2, wherein the first dye liquid crystal cell and the second dye liquid crystal cell are sequentially stacked on a side of the light emitting surface facing away from the display panel.
5. A display device as claimed in claim 3, characterised in that a wire polarizer is arranged between the first dye liquid crystal cell and the display panel.
6. The display device according to claim 1, wherein applying a voltage to the first electrode and the second electrode deflects the first liquid crystal molecules in a first direction such that the first dye cell controls light emission of the display device in the first direction; applying a voltage to the third electrode and the fourth electrode to deflect the second liquid crystal molecules to a second direction, so that the second dye liquid crystal box controls the display device to emit light along the second direction; the first direction and the second direction are directions along a direction perpendicular to the display device, and the long axes of the first liquid crystal molecules and the long axes of the second liquid crystal molecules are respectively deflected to two sides away from the direction perpendicular to the display device.
7. The display device according to claim 6, wherein the first direction and the second direction are axisymmetric with respect to a direction perpendicular to the display device.
8. The display device according to claim 1, wherein the display device is any one of a liquid crystal display device, an organic light emitting diode display device, and an inorganic light emitting diode display device.
9. The display device according to claim 1, wherein the first pretilt angle ranges from 0.1 to 5 °, the second pretilt angle ranges from 0.1 to 5 °, and the first liquid crystal molecules and the second liquid crystal molecules are negative liquid crystal molecules.
10. The display device of claim 1, wherein the first pretilt angle ranges from 85 to 89.9 °, wherein the second pretilt angle ranges from 85 to 89.9 °, and wherein the first liquid crystal molecule and the second liquid crystal molecule are positive liquid crystal molecules.
11. The display device according to claim 1, wherein the second substrate is multiplexed into the third substrate.
12. The display device according to claim 1, wherein the display panel is disposed between the first dye liquid crystal cell and the second dye liquid crystal cell, and a linear polarizer is disposed on a light emitting surface side of the display panel.
13. The display device according to claim 1, wherein an angle of 180 ° is formed between a perpendicular projection of the long axes of the first liquid crystal molecules on a predetermined plane and a perpendicular projection of the long axes of the second liquid crystal molecules on the predetermined plane, and the predetermined plane is a plane parallel to the display panel.
14. The display device according to claim 1, wherein the first dye liquid crystal cell includes a first driving circuit, the second dye liquid crystal cell includes a second driving circuit, and the display panel includes a third driving circuit, and the first driving circuit, the second driving circuit, and the third driving circuit are electrically connected to a total driving circuit.
15. A driving method of a display device is characterized in that,
comprises a display panel;
the liquid crystal display panel comprises a first dye liquid crystal box and a second dye liquid crystal box, wherein the first dye liquid crystal box comprises a first substrate, a second substrate and a first dye liquid crystal layer clamped between the first substrate and the second substrate, the first substrate is provided with a first alignment film close to the first dye liquid crystal layer, a first electrode is arranged between the first substrate and the first alignment film, the second substrate is provided with a second alignment film close to the first dye liquid crystal layer, and a second electrode is arranged between the second substrate and the second alignment film; the first dye liquid crystal layer comprises first liquid crystal molecules and first dye molecules, and the first liquid crystal molecules and the first dye molecules have first pretilt angles;
the second dye liquid crystal box comprises a third substrate, a fourth substrate and a second dye liquid crystal layer clamped between the third substrate and the fourth substrate, wherein the third substrate is provided with a third alignment film close to the second dye liquid crystal layer, a third electrode is arranged between the third substrate and the third alignment film, the fourth substrate is provided with a fourth alignment film close to the second dye liquid crystal layer, and a fourth electrode is arranged between the fourth substrate and the fourth alignment film; the second dye liquid crystal layer comprises second liquid crystal molecules and second dye molecules, and the second liquid crystal molecules and the second dye molecules have second pretilt angles; the first pretilt angle and the second pretilt angle are angles deflected towards two sides far away from the direction vertical to the display device respectively along the direction vertical to the first liquid crystal cell, and the long axis of the first liquid crystal molecule and the long axis of the second liquid crystal molecule;
providing a voltage to the first electrode and the second electrode and/or providing a voltage to the third electrode and the fourth electrode, so that the first dye liquid crystal box and the second dye liquid crystal box control the light emitting and/or light entering direction of the display panel;
the display panel is used for displaying images.
16. The driving method according to claim 15, wherein when the first liquid crystal molecule and the second liquid crystal molecule are negative liquid crystals, applying a voltage to the first electrode and the second electrode generates a voltage difference V1 and/or applying a voltage to the third electrode and the fourth electrode generates a voltage difference V2, the long axis of the first liquid crystal molecule is aligned in a direction parallel to the display device and/or the long axis of the second liquid crystal molecule is aligned in a direction parallel to the display device.
17. The driving method according to claim 15, wherein when the first liquid crystal molecules and the second liquid crystal molecules are positive liquid crystals, applying a voltage to the first electrode and the second electrode generates a voltage difference V1 and/or applying a voltage to the third electrode and the fourth electrode generates a voltage difference V2, the long axes of the first liquid crystal molecules are aligned in a direction perpendicular to the display device and/or the long axes of the second liquid crystal molecules are aligned in a direction perpendicular to the display device.
18. The driving method according to any one of claims 16 or 17, wherein a voltage is applied to the first electrode and the second electrode to generate a voltage difference V3, a first included angle a is formed between the long axis of the first liquid crystal molecule and a plane perpendicular to the first dye liquid crystal cell, the first included angle a is an acute angle, and V3< V1.
19. The driving method according to any one of claims 16 or 17, wherein a voltage is applied to the third electrode and the fourth electrode to generate a voltage difference V4, and a second included angle B is formed between the long axis of the second liquid crystal molecule and a plane perpendicular to the second dye liquid crystal cell, wherein the second included angle B is an acute angle, and V4< V2.
20. The driving method according to claim 15, wherein the first dye liquid crystal cell includes a first driving circuit, the second dye liquid crystal cell includes a second driving circuit, the display panel includes a third driving circuit, the third driving circuit supplies a fifth voltage to the display panel, the display panel displays a first picture and a sixth voltage to the display panel, the display panel displays a second picture, and the first picture and the second picture are alternately displayed; the refresh frequency of the display panel is f, when the display panel displays a first picture, the first driving circuit controls the first liquid crystal molecules to deflect within 1/f1 time, when the display panel displays a second picture, the second driving circuit controls the second liquid crystal molecules to deflect within 1/f2 time, wherein f1+ f2 is f.
21. The driving method as recited in claim 20, wherein f1 ═ f 2.
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| WO2023202562A1 (en) * | 2022-04-20 | 2023-10-26 | 江苏和成显示科技有限公司 | Single-side peep-proof liquid-crystal display device |
| CN115728985A (en) * | 2022-11-29 | 2023-03-03 | 惠科股份有限公司 | Display panel, display panel driving method and display device |
| CN115728985B (en) * | 2022-11-29 | 2023-10-13 | 惠科股份有限公司 | Display panel, display panel driving method and display device |
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| CN111948839B (en) | 2023-04-28 |
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