CN111948839B - Display device and driving method thereof - Google Patents
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- CN111948839B CN111948839B CN202010868350.5A CN202010868350A CN111948839B CN 111948839 B CN111948839 B CN 111948839B CN 202010868350 A CN202010868350 A CN 202010868350A CN 111948839 B CN111948839 B CN 111948839B
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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
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 a first pretilt angle; wherein the second dye liquid crystal cell comprises a second dye liquid crystal layer comprising second liquid crystal molecules and second dye molecules, the second liquid crystal molecules and the second dye molecules having a second pretilt angle; the first pretilt angle and the second pretilt angle are angles for deflecting the long axes of the first liquid crystal molecules and the long axes of the second liquid crystal molecules respectively in directions away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal box, so that the display device can realize mode-switchable double-view display.
Description
Technical Field
The present invention relates to the field of display technology, and in particular, to a display device and a driving method thereof.
Background
The double-view display can see two kinds of display information under different viewing angles of the display screen, and compared with the traditional display mode, the utilization rate of the display panel is increased. In the prior art, a grating is arranged on the light emitting surface of a display panel, double-view display is realized through the cooperation of the grating and a display device, the prior art has large double-view crosstalk, if a picture observed from a first view has information of a picture of a second view, a picture observed from the second view has information of a picture of the first view, the viewing quality is affected, and in addition, the display mode of the double-view display is not switchable.
Disclosure of Invention
The invention provides a display device and a driving method thereof, which can improve the taste of double-view display and freely switch the display mode.
First, an embodiment of the present invention provides a display device including a display panel;
a first dye liquid crystal cell including a first substrate provided with a first alignment film adjacent to the first dye liquid crystal layer, a second substrate provided with a second alignment film adjacent to the first dye liquid crystal layer, and a first electrode disposed between the first substrate and the first alignment film, and a second electrode disposed 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 a first pretilt angle;
a second dye liquid crystal cell including a third substrate provided with a third alignment film close to the second dye liquid crystal layer, a fourth substrate provided with a fourth alignment film close to the second dye liquid crystal layer, and a second dye liquid crystal layer interposed between the third substrate and the fourth substrate, a third electrode provided between the third substrate and the third alignment film, a fourth electrode provided 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 a second pretilt angle; the first pretilt angle and the second pretilt angle are angles respectively deflected along a direction perpendicular to the first dye liquid crystal box, and the long axes of the first liquid crystal molecules and the second liquid crystal molecules are respectively deflected 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 direction and/or the 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;
a first dye liquid crystal cell including a first substrate provided with a first alignment film adjacent to the first dye liquid crystal layer, a second substrate provided with a second alignment film adjacent to the first dye liquid crystal layer, and a first electrode disposed between the first substrate and the first alignment film, and a second electrode disposed 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 a first pretilt angle;
a second dye liquid crystal cell including a third substrate provided with a third alignment film close to the second dye liquid crystal layer, a fourth substrate provided with a fourth alignment film close to the second dye liquid crystal layer, and a second dye liquid crystal layer interposed between the third substrate and the fourth substrate, a third electrode provided between the third substrate and the third alignment film, a fourth electrode provided 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 a second pretilt angle; the first pretilt angle and the second pretilt angle are angles for deflecting the long axes of the first liquid crystal molecules and the long axes of the second liquid crystal molecules to two sides far away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal box;
Providing voltages to the first electrode and the second electrode and/or providing voltages 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 direction and/or the 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, and the first dye molecules and the second dye molecules are deflected towards different directions by applying control voltages to the first dye liquid crystal box and the second dye liquid crystal box, so that 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 modes of double visual angles, single visual angle display, front visual angle display 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 prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
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 present 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 present invention;
fig. 10 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 11 is a schematic structural diagram of another display device according to an embodiment of the present invention;
fig. 12 is a schematic structural diagram of another display device according to an embodiment of the present invention;
FIG. 13 is a front view luminance distribution curve of another display device according to an embodiment of the present invention;
FIG. 14 is a second view luminance distribution curve of a display device according to another embodiment of the present invention;
Fig. 15 is a first view luminance distribution curve of a display device according to another embodiment of the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be clearly and completely described by means of embodiments with reference to the accompanying drawings of the embodiments of the present invention, and it is apparent that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, a schematic structural diagram of a display device according to an embodiment of the present invention is provided, and the display device includes a display panel 300; a first dye liquid crystal cell including a first substrate 10, a second substrate 20, and a first dye liquid crystal layer interposed between the first and second substrates, the first substrate 10 being provided with a first alignment film 12 adjacent to the first dye liquid crystal layer, a first electrode 11 provided between the first substrate 10 and the first alignment film 12, the second substrate 20 being provided with a second alignment film 22 adjacent to the first dye liquid crystal layer, a second electrode 21 provided between the second substrate 20 and the second alignment film 22; the first dye liquid crystal layer includes first liquid crystal molecules 111 and first dye molecules 110, the first liquid crystal molecules 111 and the first dye molecules 111 having a first pretilt angle; the first alignment film 12 and the second alignment film 22 of the present invention may be formed by photo-alignment or rubbing alignment or the like such that when the liquid crystal is disposed on the alignment film, the first liquid crystal molecules 111 have a first pretilt angle, and when a voltage difference is applied between the first electrode 11 and the second electrode 21, the first liquid crystal molecules 111 may be driven to rotate, so that the first liquid crystal molecules are tilted along one side due to the existence of the first pretilt angle.
A second dye liquid crystal cell including a third substrate 30, a fourth substrate 40, and a second dye liquid crystal layer interposed between the third substrate 30 and the fourth substrate 40, the third substrate 30 being provided with a third alignment film 32 adjacent to the second dye liquid crystal layer, a third electrode 31 provided between the third substrate 30 and the third alignment film 32, the fourth substrate 40 being provided with a fourth alignment film 42 adjacent to the second dye liquid crystal layer, a fourth electrode 41 provided 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, the second liquid crystal molecules 221 and the second dye molecules 220 having a second pretilt angle; the first pretilt angle and the second pretilt angle are angles at 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 away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal cell; the first and second dye liquid crystal cells control the light emitting and/or light entering directions of the display panel 300; the display panel 300 is for displaying 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 or the like such that when the liquid crystal is disposed on the alignment film, the second liquid crystal molecules 221 have a second pretilt angle, and when a voltage difference exists between the third electrode 31 and the fourth electrode 41, the second liquid crystal molecules 221 may be driven to rotate, and the second liquid crystal molecules are tilted along one side due to the existence of the second pretilt angle, and the direction in which the second liquid crystal molecules are tilted by applying a voltage is different from the direction in which the first liquid crystal molecules are tilted by applying a voltage. The first electrode, the second electrode, the third electrode, and the fourth electrode are whole-surface electrodes.
In the embodiment of the present invention, the first liquid crystal molecule 111 and the second liquid crystal molecule 221 have dielectric and refractive index anisotropies, 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 molecule 110 and the second dye molecule 220 are respectively dissolved in the main bodies of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 which are aligned in a directional manner, the dye molecules will be aligned in the same direction as the liquid crystal molecules as the guest host. Under the action of an electric field, the liquid crystal molecules are deflected at a certain angle as a main body, and the dye molecules are deflected at the same angle as a guest along with the deflection of the liquid crystal molecules, so that the characteristics of the guest along with the main change are shown, it should be noted that in the embodiment of the invention, the first liquid crystal molecules 111 and the second liquid crystal molecules 221 may be the same liquid crystal molecules or different liquid crystal molecules, and the first dye molecules 110 and the second dye molecules 220 may be the same dye molecules or different dye molecules, which is not limited herein.
For more clearly showing the first pretilt angle and the second pretilt angle, see fig. 1 and 2, wherein the same reference numerals as in fig. 1 refer to fig. 1, and 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 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 away from the direction perpendicular to the display device in the direction perpendicular to the first dye liquid crystal cell direction or the direction perpendicular to the display device, and due to the pretilt angle, when the first dye liquid crystal cell is applied with a voltage, that is, when the first electrode 11 and the second electrode 21 are applied with a voltage to generate a pressure difference, the long axes of the first liquid crystal molecules 111 and the long axes of the first dye molecules 110 are deflected to the left side, and if the display panel displays an image, the image information of the display panel will not be observed from the right side because light will be absorbed by the first dye molecules 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 deflects to the left, and at this time, if the display panel displays an image, the image information of the display panel cannot be observed from the left, and 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 deflect towards different directions respectively, the light emitting direction and/or the light entering direction of the display panel can be controlled, so as to realize dual viewing angle display.
With continued reference to fig. 1, the first and second dye-cells are disposed in contact, and optionally are adhered therebetween by a transparent optical adhesive 50. The first dye liquid crystal cell and the second dye liquid crystal cell are sequentially stacked on one side of the light emitting surface of the display panel 300, namely, the first dye liquid crystal cell and the second dye liquid crystal cell control the light emitting direction of the display panel 300, and optionally, a linear polarizer 60 is arranged between the first dye liquid crystal cell and the display panel 300, so that linear polarized light emitted from the display panel is absorbed by the dye when the polarized light passes through the dye liquid crystal, and the polarized light polarization direction is parallel to the long axis direction of the dye liquid crystal molecules; when the polarization direction of the polarized light is perpendicular to the long axis of the dye liquid crystal molecules, the polarized light can be transmitted, 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 on a light-emitting surface side facing away from the display panel 300, wherein a light-emitting direction of the display panel is directed from the second dye liquid crystal cell to the display panel 300 side.
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 is deflected in the first direction D1 while the first dye molecule is also deflected in the first direction D1 such that the first dye liquid crystal cell controls the display device to emit light in the first direction D1, 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 the first image, an observer at the first direction viewing angle can see the first image, when the display device can realize a display at the one-side viewing angle if the display panel is always for the first image information, which can be regarded as a display at the left viewing angle in the drawing; referring to fig. 1 and 5, applying a voltage to the third electrode 30 and the fourth electrode 40, such that the second liquid crystal molecules 221 deflect in the second direction D2, such that the second dye liquid crystal cell controls the display device to emit light in the second direction D2, when no voltage is applied to the first dye liquid crystal cell, the long axes of the first liquid crystal molecules 111 and the first dye molecules 110 tend to stand in a "standing" direction, i.e., the long axes of the first liquid crystal molecules 111 and the first dye molecules 110 are aligned in a direction perpendicular to the display device, when the display panel 300 displays the second image, the observer of the viewing angle in the second direction can see the second image, when the display device can realize a display of a single viewing angle if the display panel is always for the second image information, which can be regarded as a display of a right viewing angle in the drawings; the first direction D1 and the second direction D2 are directions along a 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 axisymmetric with respect to the direction perpendicular to the display device, and of course, the first direction D1 and the second direction D2 may not be axisymmetric, as long as the first direction and the second direction are respectively directions of deflection 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 picture are alternately given by the control display panel and the refresh frequency reaches the condition that the human eyes cannot recognize picture switching, the display device can realize double-view display, namely, the first display picture can be observed at a left side view angle, and the second display picture can be observed at a second view angle; when the display panel is controlled to give the first picture or the 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 positive viewing angle, the picture observed under the positive viewing angle has a narrower viewing angle range compared with the traditional display, plays a certain peeping prevention role, and is wider than a single-side viewing angle. Therefore, the display device can realize free switching of different visual angles, and the application scenes are more 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, and at the moment, a linear polaroid is arranged at one side of the display panel, which is contacted with the dye liquid crystal box, so that light passing through the dye liquid crystal box to the display panel or light passing through the display panel to the dye liquid crystal box is ensured to be linear polarized.
Referring to fig. 1 and 2, the first pretilt angle a1 ranges from 0.1 to 5 ° and the second pretilt angle b1 ranges from 0.1 to 5 °, inclusive, e.g., the first pretilt angle a1 and the second pretilt angle b1 range from 1 °, wherein the first liquid crystal molecules 110 and the second liquid crystal molecules 220 are negative liquid crystal molecules. When the first liquid crystal molecule 111 and the second liquid crystal molecule 221 are negative liquid crystals, 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 direction of the display device when no voltage is applied to the first dye liquid crystal cell and the second dye liquid crystal cell, i.e., the long axes of the liquid crystal molecules are in a "standing" state, when the 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 deflect, the long axes of the first liquid crystal molecule 111 and the second liquid crystal molecule 221 tend to be inclined perpendicular to the direction of the electric field, and when a certain voltage is applied to the first dye liquid crystal 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 direction of the display device, see fig. 5, i.e., the long axes of the liquid crystal molecules are in a "lying" state ", and light emitted from the display panel is absorbed by the dye molecules in the dye liquid crystal cell, and the display device is in a black state.
Referring to fig. 1 and 7, the first pretilt angle a1 ranges from 85 to 89.9 ° and the second pretilt angle b1 ranges from 85 to 89.9 °, inclusive, e.g., the first pretilt angle a1 and the second pretilt angle b1 range from 89 °, wherein the first liquid crystal molecules 110 and the second liquid crystal molecules 220 are positive liquid crystal molecules. When the first and second liquid crystal molecules 111 and 221 are positive liquid crystals, the long axes of the first and second liquid crystal molecules 111 and 221 tend to be aligned nearly parallel to the direction of the display device when no voltage is applied to the first and second liquid crystal molecules 111 and 221, i.e., the long axes of the liquid crystal molecules are in a "flat" state, and light emitted from the display panel is absorbed by the dye molecules in the dye liquid crystal cells, so that the display device is in a black state mode, and when a voltage is applied to the first and second liquid crystal cells, the first and second liquid crystal molecules 111 and 221 are deflected, the long axes of the first and second liquid crystal molecules 111 and 221 tend to be inclined parallel to the direction of the electric field, and when a certain voltage is applied to the first and second liquid crystal cells, the long axes of the first and second liquid crystal molecules 111 and 221 tend to be aligned perpendicular to the direction of the display device, and light emitted from the display panel can be transmitted by the dye liquid crystal cells.
Referring to fig. 8, the display device provided by the present invention may further be multiplexed as a third substrate, that is, when the first and second dye liquid crystal cells are arranged in this stack, the two dye liquid crystal cells share one substrate, at which time the display device may be thinned, and in 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 invention, the display panel 300 is arranged between the first dye liquid crystal box and the second dye liquid crystal box, and the linear polarizer 61 is arranged on one side of the light emitting surface of the display panel 300, referring to fig. 9, optionally, when the display panel is a liquid crystal display panel, the display panel further comprises the linear polarizer 62, namely an upper polarizer and a lower polarizer, and further comprises a backlight module, which provides a backlight source for the liquid crystal display panel, and the backlight module is arranged on one side (not shown in the figure) of the first dye liquid crystal box, which faces 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 interposed between the fifth substrate 100 and the sixth substrate 200, and further includes a polarizer 61 and a polarizer 62, wherein the liquid crystal layer 331 may be the same material as or different from the second liquid crystal molecules 221 of the first liquid crystal molecule 111, and is not limited herein; the display modes of the display panel may be a TN mode, a VA mode, an IPS mode, an FFS mode, etc., and are not limited thereto, the fifth substrate 100 includes a driving electrode and a driving circuit, and the sixth substrate includes a color resistor, etc., which are not shown in the drawings. The display device further includes a backlight module 400 for providing a backlight for the liquid crystal display panel, which is illustrated in fig. 10 as a side-in light source, but may also be a bottom-light backlight, which is not limited herein. 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 bond 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 bond the first dye liquid crystal cell and the second dye liquid crystal cell.
Referring to fig. 11, the display device illustrated in fig. 11 is different from fig. 10 in that the backlight module 400, the first dye liquid crystal cell, the second dye liquid crystal cell, and the display panel 300 are sequentially stacked.
In the display device provided by the invention, the included angle between the vertical projection of the long axis of the first liquid crystal molecule 111 on the preset plane and the vertical projection of the long axis of the second liquid crystal molecule 221 on the preset plane is 180 degrees, the preset plane is a plane parallel to the display panel, at this time, the double viewing angles of the display device such as the left viewing angle and the right viewing angle can be ensured, and when the display device is viewed in the middle viewing angle position, compared with the included angle between the vertical projection of the long axis of the first liquid crystal molecule 111 on the preset plane and the vertical projection of the long axis of the second liquid crystal molecule 221 on the preset plane, which is an acute angle, the display crosstalk area is smaller, the double viewing angle display quality is better, and the included angle between the vertical projection of the long axis of the first liquid crystal molecule 111 on the preset plane and the vertical projection of the long axis of the second liquid crystal molecule 221 on the preset plane can be an acute angle or an obtuse angle.
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 a schematic 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 circuits may be flexible circuit boards or driving ICs, and are 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), and 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 dimming of the first dye liquid crystal cell and the second dye liquid crystal cell may be finally realized.
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; a first dye liquid crystal cell including a first substrate 10, a second substrate 20, and a first dye liquid crystal layer interposed between the first and second substrates, the first substrate 10 being provided with a first alignment film 12 adjacent to the first dye liquid crystal layer, a first electrode 11 provided between the first substrate 10 and the first alignment film 12, the second substrate 20 being provided with a second alignment film 22 adjacent to the first dye liquid crystal layer, a second electrode 21 provided between the second substrate 20 and the second alignment film 22; the first dye liquid crystal layer includes first liquid crystal molecules 111 and first dye molecules 110, the first liquid crystal molecules 111 and the first dye molecules 111 having a first pretilt angle;
A second dye liquid crystal cell including a third substrate 30, a fourth substrate 40, and a second dye liquid crystal layer interposed between the third substrate 30 and the fourth substrate 40, the third substrate 30 being provided with a third alignment film 32 adjacent to the second dye liquid crystal layer, a third electrode 31 provided between the third substrate 30 and the third alignment film 32, the fourth substrate 40 being provided with a fourth alignment film 42 adjacent to the second dye liquid crystal layer, a fourth electrode 41 provided 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, the second liquid crystal molecules 221 and the second dye molecules 220 having a second pretilt angle; the first pretilt angle and the second pretilt angle are angles at 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 away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal cell; providing voltages to the first electrode 11 and the second electrode 21 and/or providing voltages 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 entering directions of the display panel; the display panel 300 is for displaying an image, and the first electrode 11, the second electrode 21, the third electrode 31, and the fourth electrode 41 are whole-surface electrodes.
When the display panel 300 is controlled to display a picture, the driving voltages of the first dye liquid crystal cell and the second dye liquid crystal cell electrodes are controlled to drive the first liquid crystal molecule 111 and the second liquid crystal molecule 221 to deflect, so that the light emitting direction and/or the light entering direction of the display panel can be regulated and controlled.
When the first liquid crystal molecules 111 and the second liquid crystal molecules 221 are negative liquid crystals, the voltage generation voltage difference V1 is supplied to the first electrode 11 and the second electrode 21 and/or the voltage generation voltage difference V2 is supplied 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 molecules 111 and 110 of the first dye liquid crystal cell to lie flat, or controlling the long axes of the second liquid crystal molecules 221 and 220 of the second dye liquid crystal cell to lie flat, 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 lie flat, light emitted from the display panel will be absorbed by the first dye molecules 111 and/or the second dye molecules 221 at this time, 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 simultaneously present a lying flat state.
When the first liquid crystal molecules 111 and the second liquid crystal molecules 221 are positive liquid crystals, the voltage generation voltage difference V1 is supplied to the first electrode 11 and the second electrode 21 and/or the voltage generation voltage difference V2 is supplied to the third electrode 31 and the fourth electrode 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 molecules 111 and the first dye molecules 110 of the first dye liquid crystal cell are controlled to be in a standing state, or the long axes of the second liquid crystal molecules 221 and the second dye molecules 220 of the second dye liquid crystal cell are controlled to be in a standing state, or both the long axes of the liquid crystal molecules of the first dye liquid crystal cell and the second dye liquid crystal cell are controlled to be in a standing state. When the liquid crystal molecules of the first dye liquid crystal box and the second dye liquid crystal box simultaneously show a standing state, the display picture of the display panel can be observed under the full viewing angle.
For example, referring to fig. 4, when the first electrode 11 and the second electrode 21 are supplied with voltage to generate a voltage difference V3, a first angle a is formed between a long axis of the first liquid crystal molecule 111 and a plane perpendicular to the first dye liquid crystal cell, where the first angle a is an acute angle, V3< V1, that is, the voltage of V3 is insufficient to make the first liquid crystal molecule 111 in a lying state, and if the second dye liquid crystal cell is not supplied with voltage, the second liquid crystal molecule 221 and the second dye molecule 220 are in a standing state, and if the display panel displays the information of the first picture, an observer looking at the first direction D1 can see the first picture information, that is, an observer looking at the left side in the drawing can see the first picture information, and an observer looking at the right side can not see the picture information.
Referring to fig. 5, when the voltage applied to the third electrode 31 and the fourth electrode 41 generates a voltage difference V4, a second 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, the second angle B is an acute angle, V4< V2, that is, the voltage of V4 is insufficient to enable the second liquid crystal molecule 221 to be in a lying state, at this time, if the first dye liquid crystal cell does not apply the voltage, the first liquid crystal molecule 111 and the first dye molecule 110 are in a standing state, at this time, if the display panel displays the information of the second picture, the observer of the viewing angle in the second direction D2 can see the second picture information, that is, the observer of the viewing angle from the right side in the drawing can see the second picture information, and the observer of the viewing angle from the left side cannot see the picture information.
The display device provided by the invention is schematically shown by an example of a liquid crystal display device, referring to fig. 12, a first dye liquid crystal box comprises a first driving electrode 13, a second dye liquid crystal box comprises a second driving circuit 23, a display panel 300 comprises 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, 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, and the first driving circuit 21 controls the first liquid crystal molecules 111 to deflect in 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 in 1/f2 time when the display panel 300 displays a second picture, wherein f1+f2=f. For example, when the refresh frequency of the display panel is 120Hz, the first picture information is displayed in 1/120s time, the second picture information is displayed in 1/120s time, and the first picture information and the second picture information are alternately, i.e., the first picture information, the second picture information, etc. are sequentially alternately given 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 so that the first liquid crystal molecules 111 deflect towards the first direction D1, the second dye liquid crystal cell is not applied with voltage, and the second liquid crystal molecules 221 are in a standing state, and the first display picture information can be observed under the view angle of the first direction; next, in the time of 1/120s, when the display panel 300 displays the second picture information, the second dye liquid crystal box is controlled to apply a voltage so that the first liquid crystal molecules 221 deflect towards the second direction D2, the first dye liquid crystal box does not apply a voltage, the first liquid crystal molecules 221 are in a standing state, and at this time, the first display picture information can be observed under the view angle of the second direction, so that different picture information is rapidly and alternately applied to the display panel, and the resolution of human eyes is exceeded, thereby realizing the display of double view angles.
Alternatively, f1=f2; for example, when f is 120HZ, f1=f2=60 HZ.
Referring to fig. 13, 14 and 15, fig. 13 is a front view luminance distribution curve of a display device according to another embodiment of the present invention; FIG. 14 is a second view luminance distribution curve of a display device according to another embodiment of the present invention; FIG. 15 is a first view luminance distribution curve of a display device according to another embodiment of the present invention; with respect to fig. 13, when the first and second liquid crystal molecules in the first and second dye liquid crystal cells provided in the display device are controlled to assume a "standing" state, such as for the first and second liquid crystals of the negative polarity, no voltage is applied to the first and second dye liquid crystal cells, so that the first and second liquid crystal molecules assume a "standing" state, when the display panel displays image information, an observer can see a display image of the display panel under a positive viewing angle, where the display image seen under the positive viewing angle is narrower than that of the conventional display at present, a certain peeping prevention effect can be achieved, and the viewing angle is wider than that of the single-side viewing angle. Referring to fig. 14 and 5, when the second liquid crystal molecules 221 of the second dye liquid crystal cell are controlled to deflect in the second direction D2, so that the second dye liquid crystal cell controls the display device to emit light along the second direction D2, no voltage is applied to the first dye liquid crystal cell, the long axes of the first liquid crystal molecules 111 and the first dye molecules 110 tend to stand in the "standing" direction, when the display panel 300 displays an image, an observer at the second direction viewing angle can see the second image, although the first direction viewing angle has a certain brightness, the brightness occupies less than or equal to one fifth of the brightness of the second viewing angle, the generated first image brightness deficiency corresponds to the cross-talk generated by the first viewing angle, and when the first viewing angle displays an image, the generated first image brightness deficiency corresponds to the cross-talk generated by the first viewing angle, the cross-talk generated by the second viewing angle is insufficient for human eyes to distinguish the image, so that the cross-talk is smaller, and when the second viewing angle generates the second image brightness is smaller than the first viewing angle, the brightness is different from fig. 14 and 13. Referring to fig. 15 and 4, when the first liquid crystal molecules 111 are controlled to deflect in the first direction D1 while the first dye molecules are also deflected in the first direction D1, so that the first dye liquid crystal cell controls the display device to emit light in the first direction D1, when no voltage is applied to the second dye liquid crystal cell, the long axes of the second liquid crystal molecules 221 and the second dye molecules 220 tend to be in a "standing" state, and when the display panel 300 displays an image, an observer at a viewing angle in the first direction can see the image, so that fig. 15 and 13 are different in that the brightness curve of the display device is shifted to the left viewing angle, and the brightness 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 a first pretilt angle; wherein the second dye liquid crystal cell comprises a second dye liquid crystal layer comprising second liquid crystal molecules and second dye molecules, the second liquid crystal molecules and the second dye molecules having a second pretilt angle; the first pretilt angle and the second pretilt angle are angles for deflecting the long axes of the first liquid crystal molecules and the long axes of the second liquid crystal molecules respectively in directions away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal box, so that the display device can realize mode-switchable double-view display.
Note that the above is only a preferred embodiment of the present invention and the technical principle applied. 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, while the invention has been described in connection with the above embodiments, the invention is not limited to the embodiments, but may be embodied in many other equivalent forms without departing from the spirit or scope of the invention, which is set forth in the following claims.
Claims (20)
1. A display device, characterized in that:
comprises a display panel;
a first dye liquid crystal cell including a first substrate provided with a first alignment film adjacent to the first dye liquid crystal layer, a second substrate provided with a second alignment film adjacent to the first dye liquid crystal layer, and a first electrode disposed between the first substrate and the first alignment film, and a second electrode disposed 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 a first pretilt angle;
a second dye liquid crystal cell including a third substrate provided with a third alignment film close to the second dye liquid crystal layer, a fourth substrate provided with a fourth alignment film close to the second dye liquid crystal layer, and a second dye liquid crystal layer interposed between the third substrate and the fourth substrate, a third electrode provided between the third substrate and the third alignment film, a fourth electrode provided 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 a second pretilt angle; the first pretilt angle and the second pretilt angle are angles respectively deflected along a direction perpendicular to the first dye liquid crystal box, and the long axes of the first liquid crystal molecules and the second liquid crystal molecules are respectively deflected 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 direction and/or the light entering direction of the display panel;
the display panel is used for displaying images;
applying voltages to the first electrode and the second electrode to deflect the first liquid crystal molecules in a first direction, so that the first dye liquid crystal box controls the display device to emit light along the first direction; applying voltages to the third electrode and the fourth electrode to deflect the second liquid crystal molecules in 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 towards two sides away from the direction perpendicular to the display device.
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 facing away from the light-emitting surface of the display panel.
5. A display device according to claim 3, wherein a linear polarizer is arranged between the first dye liquid crystal cell and the display panel.
6. The display device according to claim 1, wherein the first direction and the second direction are axisymmetric with respect to a direction perpendicular to the display device.
7. 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.
8. The display device according to claim 1, wherein the first pretilt angle range is 0.1 to 5 °, the second pretilt angle range is 0.1 to 5 °, and the first liquid crystal molecules and the second liquid crystal molecules are negative liquid crystal molecules.
9. The display device according to claim 1, wherein the first pretilt angle range is 85-89.9 °, the second pretilt angle range is 85-89.9 °, and the first liquid crystal molecules and the second liquid crystal molecules are positive liquid crystal molecules.
10. The display device according to claim 1, wherein the second substrate is multiplexed as the third substrate.
11. The display device according to claim 1, wherein the display panel is provided between the first dye liquid crystal cell and the second dye liquid crystal cell, and a linear polarizer is provided on a light-emitting surface side of the display panel.
12. The display device according to claim 1, wherein an angle between a perpendicular projection of a long axis of the first liquid crystal molecule to a predetermined plane and a perpendicular projection of a long axis of the second liquid crystal molecule to a predetermined plane is 180 °, the predetermined plane being a plane parallel to the display panel.
13. 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, 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.
14. A driving method of a display device is characterized in that,
comprises a display panel;
a first dye liquid crystal cell including a first substrate provided with a first alignment film adjacent to the first dye liquid crystal layer, a second substrate provided with a second alignment film adjacent to the first dye liquid crystal layer, and a first electrode disposed between the first substrate and the first alignment film, and a second electrode disposed 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 a first pretilt angle;
A second dye liquid crystal cell including a third substrate provided with a third alignment film close to the second dye liquid crystal layer, a fourth substrate provided with a fourth alignment film close to the second dye liquid crystal layer, and a second dye liquid crystal layer interposed between the third substrate and the fourth substrate, a third electrode provided between the third substrate and the third alignment film, a fourth electrode provided 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 a second pretilt angle; the first pretilt angle and the second pretilt angle are angles for deflecting the long axes of the first liquid crystal molecules and the long axes of the second liquid crystal molecules to two sides far away from the direction perpendicular to the display device along the direction perpendicular to the first dye liquid crystal box;
applying voltages to the first electrode and the second electrode to deflect the first liquid crystal molecules in a first direction, so that the first dye liquid crystal box controls the display device to emit light along the first direction; applying voltages to the third electrode and the fourth electrode to deflect the second liquid crystal molecules in 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 deflect towards two sides away from the direction perpendicular to the display device respectively;
The display panel is used for displaying images.
15. The driving method according to claim 14, wherein when the first liquid crystal molecules and the second liquid crystal molecules are negative liquid crystals, a voltage generation voltage difference V1 is supplied to the first electrode and the second electrode and/or a voltage generation voltage difference V2 is supplied to the third electrode and the fourth electrode, and a long axis of the first liquid crystal molecules is arranged in a direction parallel to the display device and/or a long axis of the second liquid crystal molecules is arranged in a direction parallel to the display device.
16. The driving method according to claim 14, wherein when the first liquid crystal molecules and the second liquid crystal molecules are positive liquid crystals, a voltage is supplied to the first electrode and the second electrode to generate a voltage difference V1 and/or a voltage is supplied to the third electrode and the fourth electrode to generate a voltage difference V2, and long axes of the first liquid crystal molecules are arranged in a direction perpendicular to the display device and/or long axes of the second liquid crystal molecules are arranged in a direction perpendicular to the display device.
17. The driving method according to any one of claims 15 or 16, wherein a voltage difference V3 is generated by applying a voltage to the first electrode and the second electrode, and a first angle a is formed between a long axis of the first liquid crystal molecule and a plane perpendicular to the first dye liquid crystal cell, wherein the first angle a is an acute angle, and V3< V1.
18. The driving method according to any one of claims 15 or 16, wherein a voltage difference V4 is generated by applying a voltage to the third electrode and the fourth electrode, and a second angle B is formed between a long axis of the second liquid crystal molecule and a plane perpendicular to the second dye liquid crystal cell, wherein the second angle B is an acute angle, and V4< V2.
19. The driving method according to claim 14, 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, supplies 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, the first driving circuit controls the first liquid crystal molecule to deflect within 1/f1 time when the display panel displays a first picture, and the second driving circuit controls the second liquid crystal molecule to deflect within 1/f2 time when the display panel displays a second picture, wherein f1+f2=f.
20. The driving method according to claim 19, wherein f1=f2.
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| CN212112044U (en) * | 2020-04-23 | 2020-12-08 | 中强光电股份有限公司 | Automatically controlled visual angle switch and display device |
| CN113009742A (en) * | 2021-02-26 | 2021-06-22 | 昆山龙腾光电股份有限公司 | Display device with switchable visual angle |
| CN116953966A (en) * | 2022-04-20 | 2023-10-27 | 江苏和成显示科技有限公司 | Single-side peep-proof liquid crystal 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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| TW201039007A (en) * | 2009-04-23 | 2010-11-01 | Chi Mei Optoelectronics Corp | Multi view angle liquid crystal display and fabricating method thereof |
| CN204287641U (en) * | 2014-11-28 | 2015-04-22 | 深圳市轩利丰科技有限公司 | Double-visual angle TN display screen |
| CN205844670U (en) * | 2016-06-16 | 2016-12-28 | 昆山龙腾光电有限公司 | The liquid crystal display that Multi-function visual angle is controlled |
| CN106154623A (en) * | 2016-06-29 | 2016-11-23 | 南京中电熊猫液晶显示科技有限公司 | Double picture display panels and device |
| WO2018027802A1 (en) * | 2016-08-11 | 2018-02-15 | 昆山龙腾光电有限公司 | Viewing angle switchable liquid crystal display device and viewing angle switching method |
| CN106940497A (en) * | 2017-04-29 | 2017-07-11 | 昆山龙腾光电有限公司 | The two-way controllable liquid crystal display device in width visual angle |
| CN107357098A (en) * | 2017-06-14 | 2017-11-17 | 南京中电熊猫平板显示科技有限公司 | Transparent display panel and its manufacture method |
| CN110133882B (en) * | 2019-06-29 | 2022-07-19 | 上海天马微电子有限公司 | Display panel, display device and display method thereof |
| CN110780477A (en) * | 2019-11-28 | 2020-02-11 | 上海天马微电子有限公司 | Liquid crystal display screen, display method thereof and display device |
| CN110764322B (en) * | 2019-11-28 | 2022-09-23 | 昆山龙腾光电股份有限公司 | Liquid crystal display device and driving method thereof |
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| CN111323946B (en) * | 2020-03-19 | 2022-09-23 | 昆山龙腾光电股份有限公司 | Liquid crystal display device and driving method thereof |
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