CN107728363B - Stereoscopic display device and control method thereof - Google Patents
Stereoscopic display device and control method thereof Download PDFInfo
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- CN107728363B CN107728363B CN201711010884.9A CN201711010884A CN107728363B CN 107728363 B CN107728363 B CN 107728363B CN 201711010884 A CN201711010884 A CN 201711010884A CN 107728363 B CN107728363 B CN 107728363B
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/28—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising
- G02B27/286—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 for polarising for controlling or changing the state of polarisation, e.g. transforming one polarisation state into another
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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
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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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
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- Testing, Inspecting, Measuring Of Stereoscopic Televisions And Televisions (AREA)
Abstract
The embodiment of the invention provides a stereoscopic display device and a control method, and relates to the technical field of display. The stereoscopic display device includes: the first polarization state adjusting unit comprises a first substrate, a first electrode layer, a first liquid crystal layer, a second electrode layer and a second substrate which are sequentially stacked; the second polarization state adjusting unit is arranged on one side of the first polarization state adjusting unit and comprises a third substrate, a third electrode layer, a second liquid crystal layer, a fourth electrode layer and a fourth substrate which are sequentially stacked; the 2D display unit is arranged on one side, away from the first polarization state adjusting unit, of the second polarization state adjusting unit; and the liquid crystal lens unit is arranged on one side of the first polarization state adjusting unit, which is far away from the second polarization state adjusting unit. And controlling the odd sub-pixel column and the even sub-pixel column of the 2D display unit to alternately display information corresponding to the left eye and information corresponding to the right eye at intervals of a frame, so that the resolution is not lost when the stereoscopic display device performs 3D display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a stereoscopic display device and a control method thereof.
Background
The real three-dimensional world provides two images with a certain potential difference for two eyes of a person, the two images with the certain potential difference form parallax required by stereoscopic vision after being reflected by the two eyes, and three-dimensional stereoscopic sensation is generated through fusion reflection of an optic nerve center and visual psychological reaction. Using this principle, a 3D feeling can be obtained by presenting two pairs of left and right images having a parallax to the left and right eyes, respectively, through the display device. The naked eye 3D stereoscopic display device simultaneously provides images with different parallaxes for left and right eyes at the same time in a space division mode, namely, part of sub-pixel columns of the 2D screen always correspond to one eye, other sub-pixel columns of the 2D screen always correspond to the other eye, and the observed image information is smaller than the physical resolution of the 2D screen for the left eye or the right eye, so that the stereoscopic display picture is not clear enough, and the image quality is influenced.
Disclosure of Invention
In view of the above, the present invention provides a stereoscopic display device and a control method thereof to improve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
in one aspect, an embodiment of the present invention provides a stereoscopic display device, where the stereoscopic display device includes: the first polarization state adjusting unit comprises a first substrate, a first electrode layer, a first liquid crystal layer, a second electrode layer and a second substrate which are sequentially stacked; the second polarization state adjusting unit is arranged on one side of the first polarization state adjusting unit and comprises a third substrate, a third electrode layer, a second liquid crystal layer, a fourth electrode layer and a fourth substrate which are sequentially stacked; the 2D display unit is arranged on one side, away from the first polarization state adjusting unit, of the second polarization state adjusting unit; and a liquid crystal lens unit disposed on a side of the first polarization state adjustment unit away from the second polarization state adjustment unit; when the current frame is in a 3D display state, the odd sub-pixel columns of the 2D display screen display image information corresponding to a left eye, the even sub-pixel columns of the 2D display screen display image information corresponding to a right eye, the second polarization state adjusting unit is in a first preset working state, the first polarization state adjusting unit is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user; when the current frame is in a 3D display state, the odd sub-pixel columns of the 2D display screen display image information corresponding to the right eye, the even sub-pixel columns of the 2D display screen display image information corresponding to the left eye, the first polarization state adjusting unit is in a second preset working state, the second polarization state adjusting unit is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user.
In an alternative embodiment, the first electrode layer includes one first electrode layer electrode, the second electrode layer includes one second electrode layer electrode, and the first electrode layer electrode and the second electrode layer electrode are planar electrodes.
As an optional implementation manner, in the stereoscopic display device, an included angle between the orientation direction of the first electrode layer electrode and the orientation direction of the second electrode layer is a first preset included angle.
In an alternative embodiment, in the stereoscopic display device, the third electrode layer includes one third electrode layer electrode, the fourth electrode layer includes one fourth electrode layer electrode, and the third electrode layer electrode and the fourth electrode layer electrode are planar electrodes.
As an optional implementation manner, in the stereoscopic display device, an included angle between the orientation direction of the third electrode layer electrode and the orientation direction of the fourth electrode layer is a second preset included angle.
As an optional implementation manner, in the above stereoscopic display device, the liquid crystal lens unit includes a film substrate, a lens microstructure and a liquid crystal coating, the lens microstructure is disposed on one side of the film substrate, and the liquid crystal coating is disposed on one side of the lens microstructure far away from the film substrate.
As an optional implementation manner, in the stereoscopic display device, the liquid crystal coating includes a plurality of sub liquid crystal coatings with preset structures, a cross section of each preset structure is in a preset shape, the liquid crystal coating is close to the first polarization state adjustment unit, the sub liquid crystal coatings with the preset structures, the film base materials opposite to the sub liquid crystal coatings with the preset structures, and the lens microstructures opposite to the sub liquid crystal coatings with the preset structures form lens units, and each lens unit is opposite to two adjacent sub pixel columns of the 2D display unit.
As an alternative embodiment, in the above stereoscopic display device, the refractive index of the lens microstructure is a first refractive index, and the first refractive index is between the ordinary refractive index and the extraordinary refractive index; when the current frame is a current frame, a voltage difference exists between one or more electrodes of the first electrode layer and one or more electrodes of the second electrode layer, a voltage difference does not exist between one or more electrodes of the third electrode layer and one or more electrodes of the fourth electrode layer, and the refractive index of light, which is incident to the liquid crystal coating through the polarization state adjusting unit, of the liquid crystal coating is a refractive index of ordinary rays, so that image information corresponding to a left eye enters a left eye of a user, and image information corresponding to a right eye enters a right eye of the user; when the current frame is the next frame of the current frame, a voltage difference exists between one or more electrodes of the first electrode layer and one or more electrodes of the second electrode layer, a voltage difference exists between one or more electrodes of the third electrode layer and one or more electrodes of the fourth electrode layer, and the refractive index of light which is incident to the liquid crystal coating through the first polarization state adjusting unit and corresponds to the liquid crystal coating is an extraordinary light refractive index, so that image information corresponding to a left eye enters the left eye of a user, and image information corresponding to a right eye enters the right eye of the user.
As an alternative embodiment, in the above stereoscopic display device, the refractive index of the lens microstructure is a first refractive index, and the first refractive index is between the ordinary refractive index and the extraordinary refractive index; when no voltage difference exists between the one or more electrodes of the first electrode layer and the one or more electrodes of the second electrode layer, no voltage difference exists between the one or more electrodes of the third electrode layer and the one or more electrodes of the fourth electrode layer, and the refractive index of the light which is incident to the liquid crystal coating layer through the first polarization state adjusting unit and corresponds to the liquid crystal coating layer is the same as the first refractive index, so that the image information displayed by the 2D display unit enters the left eye and the right eye of a user at the same time, and the 2D display state is realized.
On the other hand, an embodiment of the present invention further provides a control method, which is applied to the above stereoscopic display device, and the method includes: when the current frame is in a 3D display state, controlling odd-numbered sub-pixel columns of the 2D display screen to display image information corresponding to a left eye, even-numbered sub-pixel columns of the 2D display screen to display image information corresponding to a right eye, the second polarization state adjusting unit is in a first preset working state, the first polarization state adjusting unit is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user; when the current frame is in a 3D display state, the odd sub-pixel columns of the 2D display screen are controlled to display image information corresponding to the right eye, the even sub-pixel columns of the 2D display screen display image information corresponding to the left eye, the first polarization state adjusting unit is in a second preset working state, the second polarization state adjusting unit is in the second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user.
The invention has the following beneficial effects: the stereoscopic display device and the control method thereof provided by the embodiment of the invention comprise a liquid crystal lens unit, a first polarization state adjusting unit, a second polarization state adjusting unit and a 2D display unit, wherein the first polarization state adjusting unit comprises a first substrate, a first electrode layer, a first liquid crystal layer, a second electrode layer and a second substrate which are sequentially stacked, the second polarization state adjusting unit comprises a third substrate, a third electrode layer, a second liquid crystal layer, a fourth electrode layer and a fourth substrate which are sequentially stacked, when a current frame is carried out, an odd number sub-pixel column of the 2D display screen displays image information corresponding to a left eye, an even number sub-pixel column of the 2D display screen displays image information corresponding to a right eye, the second polarization state adjusting unit is in a first preset working state, the first polarization state adjusting unit is in a second preset working state, when the next frame of the current frame is processed, the odd sub-pixel columns of the 2D display screen display the image information corresponding to the right eye, the even sub-pixel columns of the 2D display screen display the image information corresponding to the left eye, the first polarization state adjusting unit is in a second preset working state, the second polarization state adjusting unit is in the second preset working state, so that the image information corresponding to the left eye enters the left eye of the user, and the image information corresponding to the right eye enters the right eye of the user. The left-eye information displayed by the odd sub-pixel columns of the 2D display unit in the current frame can be realized in the 2D display state, can enter the left eye of the user, the right eye information displayed by the even sub-pixel columns can enter the right eye of the user, the right eye information displayed by the odd sub-pixel columns of the 2D display unit can enter the right eye of the user in the next frame, the left eye information displayed by the even sub-pixel columns of the 2D display unit can enter the left eye of the user, therefore, the odd sub-pixel column and the even sub-pixel column of the 2D display unit can alternately display information corresponding to the left eye and information corresponding to the right eye at the time interval of the frame while realizing the 3D display effect, therefore, the resolution ratio is not lost when the three-dimensional display device carries out 3D display, and the problem that the resolution ratio is lost when the images with different parallaxes are simultaneously provided for the left eye and the right eye at the same time in a space division mode in the prior art is solved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only 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 illustrating a stereoscopic display apparatus according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating state timing sequences of a 2D display unit, a first polarization state adjustment unit, and a second polarization state adjustment unit according to an embodiment of the present invention;
fig. 3 is a schematic diagram illustrating a display principle of a stereoscopic display apparatus according to an embodiment of the invention;
fig. 4 is a schematic view illustrating another display principle of a stereoscopic display device according to an embodiment of the invention;
fig. 5 is a schematic diagram illustrating still another display principle of a stereoscopic display device according to an embodiment of the present invention.
Icon: 100-stereoscopic display device; 110-a first polarization state adjustment unit; 111-a first substrate; 112-a first electrode layer; 113-a first liquid crystal layer; 114-a second electrode layer; 115-a second substrate; 120-a second polarization state adjustment unit; 121-a third substrate; 122-a third electrode layer; 123-a second liquid crystal layer; 124-a fourth electrode layer; 125-a fourth substrate; 130-2D display unit; 140-liquid crystal lens cell; 141-a film substrate; 142-a lens microstructure; 143-liquid crystal coating.
Detailed Description
The existing stereoscopic display device provides images with different parallaxes to the left and right eyes at the same time in a space division mode, so that the observed image information is smaller than the physical resolution of a 2D screen.
In view of the above, the inventors have conducted long-term research and extensive practice to provide a stereoscopic display device and a control method to improve the existing problems.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
First embodiment
A first embodiment of the present invention provides a stereoscopic display apparatus 100, please refer to fig. 1, in which the stereoscopic display apparatus 100 includes: a first polarization state adjustment unit 110 including a first substrate 111, a first electrode layer 112, a first liquid crystal layer 113, a second electrode layer 114, and a second substrate 115, which are sequentially stacked; a second polarization state adjustment unit 120 disposed on one side of the first polarization state adjustment unit 110, the second polarization state adjustment unit 120 including a third substrate 121, a third electrode layer 122, a second liquid crystal layer 123, a fourth electrode layer 124, and a fourth substrate 125 sequentially stacked; a 2D display unit 130 disposed on a side of the second polarization state adjustment unit 120 away from the first polarization state adjustment unit 110; and a liquid crystal lens unit 141 disposed on a side of the first polarization state adjustment unit 110 away from the second polarization state adjustment unit 120.
Further, when the current frame is in the 3D display state, the odd sub-pixel columns of the 2D display screen display image information corresponding to the left eye, the even sub-pixel columns of the 2D display screen display image information corresponding to the right eye, the second polarization state adjusting unit 120 is in a first preset working state, and the first polarization state adjusting unit 110 is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of the user and the image information corresponding to the right eye enters the right eye of the user; when the current frame is in the 3D display state, the odd sub-pixel columns of the 2D display screen display image information corresponding to the right eye, the even sub-pixel columns of the 2D display screen display image information corresponding to the left eye, the first polarization state adjusting unit 110 is in the second preset working state, and the second polarization state adjusting unit 120 is in the second preset working state, so that the image information corresponding to the left eye enters the left eye of the user, and the image information corresponding to the right eye enters the right eye of the user.
In embodiments of the present invention, the first electrode layer 112 may include one or more first electrode layer electrodes; the second electrode layer 114 may include one or more second electrode layer electrodes; the third electrode layer 122 may include one or more third electrode layer electrodes; the fourth electrode layer 124 may include one or more fourth electrode layer electrodes.
As an embodiment, the first electrode layer 112 may include one first electrode layer electrode; the second electrode layer 114 may include one second electrode layer electrode; the third electrode layer 122 includes a third electrode layer electrode; the fourth electrode layer 124 includes one fourth electrode layer electrode.
Specifically, the first electrode layer electrode, the second electrode layer electrode, the third electrode layer electrode, and the fourth electrode layer electrode may be planar electrodes. So that the electrodes in each electrode layer can be made to correspond to the substrate.
As another embodiment, the first electrode layer 112 may include a plurality of first electrode layer electrodes; the second electrode layer 114 may include a plurality of second electrode layer electrodes; the third electrode layer 122 includes a plurality of third electrode layer electrodes; the fourth electrode layer 124 includes a plurality of fourth electrode layer electrodes.
Specifically, the first electrode layer electrode, the second electrode layer electrode, the third electrode layer electrode, and the fourth electrode layer electrode may be stripe electrodes. The strip electrodes in each electrode layer can be adjacent in sequence and are arranged in the same direction, so that the strip electrodes are connected into a whole in a seamless mode, and the whole corresponds to the substrate.
In the embodiment of the present invention, the first liquid crystal layer 113 and the second liquid crystal layer 123 may be twisted nematic liquid crystal, i.e., common TN type liquid crystal. The first substrate 111, the second substrate 115, the third substrate 121, and the fourth substrate 125 may be glass substrates.
In addition, in the embodiment of the present invention, an included angle between the orientation direction of the first electrode layer electrode and the orientation direction of the second electrode layer 114 is a first preset included angle. An included angle between the orientation direction of the third electrode layer electrode and the orientation direction of the second electrode layer 114 is a second preset included angle.
Specifically, a first alignment layer may be disposed between the first electrode layer electrode and the first liquid crystal layer 113, a second alignment layer may be disposed between the second electrode layer electrode and the first liquid crystal layer 113, a third alignment layer may be disposed between the third electrode layer electrode and the second liquid crystal layer 123, and a fourth alignment layer may be disposed between the fourth electrode layer electrode and the second liquid crystal layer 123. Thus, the first electrode layer electrode, the second electrode layer electrode, the third electrode layer electrode, and the fourth electrode layer electrode can be oriented.
In an embodiment of the present invention, the first alignment layer, the second alignment layer, the third alignment layer, and the fourth alignment layer may be polyimide polymer materials.
In the embodiment of the invention, referring to fig. 1, the liquid crystal lens unit 141 includes a film substrate 141, a lens microstructure 142, and a liquid crystal coating 143. The liquid crystal coating 143 is close to the first polarization state adjustment unit 110, the lens microstructure 142 is disposed on one side of the film substrate 141, and the liquid crystal coating 143 is disposed on one side of the lens microstructure 142 away from the film substrate 141. The specific material of the film substrate 141 may be a PET material.
Further, the liquid crystal coating 143 includes a plurality of sub liquid crystal coatings 143 with a preset structure, the cross section of the preset structure is in a preset shape, the film substrate 141 opposite to the sub liquid crystal coatings 143 with the preset structure and the lens microstructures 142 opposite to the sub liquid crystal coatings 143 with the preset structure form lens units, and each lens unit is opposite to two adjacent sub pixel columns of the 2D display unit 130.
In the embodiment of the present invention, the specific preset shape may be an arc shape, an isosceles triangle shape, or a bilaterally symmetric convex shape formed by multiple segments. The shape of the side of the mirror microstructure close to the liquid crystal coating 143 should correspond to the shape of the liquid crystal coating 143, that is, the side of the lens microstructure 142 close to the liquid crystal coating 143 is a curved surface, and the side of the lens microstructure 142 away from the liquid crystal coating 143, that is, the side close to the film substrate 141 is a plane. In addition, the side of the liquid crystal coating 143 away from the lens microstructures 142 may be planar. It will be appreciated that the side of the liquid crystal coating 143 in contact with the lenticular microstructures 142 has a complementary configuration and a flat surface on the side remote from the lenticular microstructures 142. In addition, the liquid crystals in the liquid crystal coating 143 are aligned such that the long axes of the molecules are aligned in a predetermined direction.
In an embodiment of the present invention, the 2D display unit 130 may be a TFT _ LCD liquid crystal display. The 2D display unit 130 includes a matrix of red, green and blue sub-pixels for providing display information to the stereoscopic display apparatus 100. Of course, the specific type of the 2D display unit 130 is not limited in the embodiment of the present invention.
In the embodiment of the present invention, the 2D display unit 130 and the second polarization state adjustment unit 120 may both operate at a high frequency. For example at 120Hz, i.e. 120 frames per second. The 2D display unit 130 may alternately display the image information corresponding to the left eye and the image information corresponding to the right eye on the corresponding sub-pixels with a preset time as a period. Specifically, the preset time may correspond to 120Hz, that is, 1/120 seconds, and the working states of the second polarization state adjustment unit 120 are switched simultaneously, and then the left-eye information and the right-eye information are transmitted to the left eye and the right eye of the observer, respectively, in combination with the optical function of the first polarization state adjustment unit 110.
For example, referring to fig. 2, i represents a first preset operation state, and ii represents a second preset operation state, which may be within each second, at odd frames, i.e., 1, 3, 5, …, 117, 119 frames, the odd sub-pixel columns of the 2D display unit 130 can display information corresponding to the left eye, the even sub-pixel columns of the 2D display unit 130 can display information corresponding to the right eye, that is, the information displayed by the sub-pixel rows is the arrangement of the LRLR … in fig. 2, and the second polarization state adjustment unit 120 is in the first preset working state, the first working state is the state of the optical rotation by the second preset included angle, the first polarization state adjustment unit 110 is in the second preset working state, that is, in the optically inactive state, in this case, the information corresponding to the left eye may be transmitted to the left eye of the observer after being refracted by the liquid crystal lens unit 141, and the information corresponding to the right eye may be transmitted to the right eye of the observer after being refracted by the liquid crystal lens unit 141.
Referring to fig. 2, in an even frame, that is, in frames 2, 4, 6, …, 118, and 120, information corresponding to the right eye is displayed by the odd sub-pixel columns of the 2D display unit 130, information corresponding to the left eye is displayed by the even sub-pixel columns of the 2D display unit 130, that is, the information displayed by the sub-pixel columns is the arrangement manner of the RLRL … in fig. 2, the second polarization state adjustment unit 120 is in a second preset working state, that is, a non-optical rotation state, the first polarization state adjustment unit 110 is in a second preset working state, that is, a non-optical rotation state, at this time, the information corresponding to the left eye can be refracted by the liquid crystal lens unit 141 and transmitted to the left eye of an observer, and the information corresponding to the right eye can be refracted by the liquid crystal lens unit 141 and transmitted to the right eye of the observer. Thus, a stereoscopic display state can be realized.
In the embodiment of the present invention, the refractive index of the lens microstructure 142 is a first refractive index, and the first refractive index may be between the refractive index of the ordinary ray and the refractive index of the extraordinary ray, for example, the first refractive index may be
In the current frame, the first polarization state adjustment unit 110 is in a power-on state, so that a voltage difference exists between one or more electrodes of the first electrode layer 112 and one or more electrodes of the second electrode layer 114; the second polarization state adjustment unit 120 is in an unpowered state, and there is no voltage difference between one or more electrodes of the third electrode layer 122 and one or more electrodes of the fourth electrode layer 124. At this time, the first polarization state adjustment unit 110 may be in the first preset operation state, that is, the liquid crystal molecules of the first liquid crystal layer 113 lose optical rotation characteristics, the polarization characteristics of the linearly polarized light incident to the first polarization state adjustment unit 110 are not changed, and the second polarization state adjustment unit 120 may be in the second operation state, that is, the liquid crystal molecules of the second liquid crystal layer 123 are naturally twisted by 90 degrees, so that the polarization angle of the incident linearly polarized light is changed by 90 degrees. Therefore, the polarization direction of the linearly polarized light emitted from the 2D display unit 130 is changed by 90 degrees after passing through the second polarization state adjustment unit 120, the polarization characteristic is not changed when passing through the first polarization state adjustment unit 110, and when the linearly polarized light further enters the liquid crystal coating 143 of the liquid crystal lens unit 141, since the polarization direction of the incident light is perpendicular to the long axis direction of the liquid crystal molecules in the liquid crystal coating 143, the refractive index of the liquid crystal coating 143 is the refractive index n of the ordinary lighto。
As shown in fig. 3, since the refractive index of the lens microstructure 142 is larger than the refractive index of ordinary light, when light from the liquid crystal coating 143 enters the lens microstructure 142, it is equivalent to that incident light enters the optically dense medium from the optically thinner medium, and it is known from the law of refraction that the incident light approaches the normal. Therefore, it can be realized that the information corresponding to the left eye displayed by the odd sub-pixel column of the 2D display unit 130 can be transmitted to the left eye of the observer after being refracted by the liquid crystal lens unit 141, and the information corresponding to the right eye displayed by the even sub-pixel column of the 2D display unit 130 can be transmitted to the right eye of the observer after being refracted by the liquid crystal lens unit 141, so that the observer can see correct image information.
At the next frame of the current frame, the first polarization state adjustment unit 110 is still inAn energized state and a voltage difference between the electrode or electrodes of the first electrode layer 112 and the electrode or electrodes of the second electrode layer 114; the second polarization state adjustment unit 120 is adjusted to be in a power-on state such that there is no voltage difference between one or more electrodes of the third electrode layer 122 and one or more electrodes of the fourth electrode layer 124. At this time, the first polarization state adjustment unit 110 and the second polarization state adjustment unit 120 may be in the second preset operation state, that is, the liquid crystal molecules of the first liquid crystal layer 113 and the second liquid crystal layer 123 lose optical rotation characteristics, so that the polarization characteristics of the linearly polarized light incident to the first polarization state adjustment unit 110 are not changed, and the polarization characteristics of the linearly polarized light incident to the second polarization state adjustment unit 120 are not changed. Therefore, the polarization characteristic of the linearly polarized light emitted from the 2D display unit 130 is not changed after passing through the second polarization state adjustment unit 120, and when the linearly polarized light passes through the first polarization state adjustment unit 110, the polarization characteristic is not changed, and when the linearly polarized light further enters the liquid crystal coating 143 of the liquid crystal lens unit 141, since the polarization direction of the incident light is parallel to the long axis direction of the liquid crystal molecules in the liquid crystal coating 143, the refractive index of the liquid crystal coating 143 is the refractive index n of the extraordinary rayse。
As shown in fig. 4, since the refractive index of the lens microstructure 142 is smaller than that of the extraordinary rays, when light from the liquid crystal coating 143 enters the lens microstructure 142, it is equivalent to that incident light enters the optically thinner medium from the optically denser medium, and it can be known from the law of refraction that the incident light deviates from the normal line, after the odd-numbered sub-pixel column and the even-numbered sub-pixel column of the 2D display unit 130 exchange left-and-right-eye information in the next frame of the current frame, information corresponding to the right eye displayed by the odd-numbered sub-pixel column of the 2D display unit 130 can be refracted by the liquid crystal lens unit 141 and then transmitted to the right eye of the observer, and information corresponding to the left eye displayed by the even-numbered sub-pixel column of the 2D display unit 130 can be refracted by the liquid crystal lens unit 141 and then transmitted to the left eye of the observer.
Therefore, the 3D display state of the stereoscopic display device 100 can be realized by combining the display modes of the current frame and the next frame of the current frame, and since half of the time odd-numbered sub-pixel columns display information for the left eye, half of the time odd-numbered sub-pixel columns display information for the right eye, and the other half of the time odd-numbered sub-pixel columns display information for the right eye, and the even-numbered sub-pixel columns display information for the left eye, all the frames display information for the left eye or information for the right eye. When the stereoscopic display device 100 performs 3D display, the resolution is not lost, and the 3D display effect of the stereoscopic display device 100 is improved.
In embodiments of the present invention, when there is no voltage difference between one or more electrodes of the first electrode layer 112 and one or more electrodes of the second electrode layer 114; there is no voltage difference between one or more electrodes of the third electrode layer 122 and one or more electrodes of the fourth electrode layer 124. That is, the incident light passes through the second polarization state adjustment unit 120 and then rotates 90 ° in the polarization direction, and passes through the first polarization state adjustment unit 110 and then selects 45 ° in the polarization direction, so that when entering the liquid crystal layer, the refractive index corresponding to the liquid crystal coating 143 is
Therefore, as shown in fig. 5, the refractive index of the liquid crystal coating 143 corresponding to the light incident on the liquid crystal coating 143 through the first polarization state adjustment unit 110 is the same as the first refractive index, so that the refractive index does not change when the light passes through the liquid crystal coating 143 and the lens microstructures 142, so that the image information displayed by the 2D display unit 130 simultaneously enters the left eye and the right eye of the user, a 2D display state is realized, and the resolution is not lost.
The stereoscopic display device 100 provided by the embodiment of the invention can realize the 3D display state and the 2D display state, and the resolution ratio is not lost in the 3D display state and the 2D display state, i.e. the two display states have better display effect.
Second embodiment
A second embodiment of the present invention provides a control method, which is applied to the stereoscopic display device provided in the first embodiment of the present invention. The control method comprises the following steps: when the current frame is in the 3D display state, controlling odd-numbered sub-pixel columns of the 2D display screen to display image information corresponding to a left eye, even-numbered sub-pixel columns of the 2D display screen to display image information corresponding to a right eye, wherein the second polarization state adjusting unit is in a first preset working state, and the first polarization state adjusting unit is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user; when the current frame is in the 3D display state, controlling the odd-numbered sub-pixel columns of the 2D display screen to display image information corresponding to the right eye, controlling the even-numbered sub-pixel columns of the 2D display screen to display image information corresponding to the left eye, controlling the first polarization state adjusting unit to be in a second preset working state, and controlling the second polarization state adjusting unit to be in the second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user. Thus, the 3D display state of the stereoscopic display device can be realized without loss of resolution of the stereoscopic display device.
The stereoscopic display device and the control method thereof provided by the embodiment of the invention comprise a liquid crystal lens unit, a first polarization state adjusting unit, a second polarization state adjusting unit and a 2D display unit, wherein the first polarization state adjusting unit comprises a first substrate, a first electrode layer, a first liquid crystal layer, a second electrode layer and a second substrate which are sequentially stacked, the second polarization state adjusting unit comprises a third substrate, a third electrode layer, a second liquid crystal layer, a fourth electrode layer and a fourth substrate which are sequentially stacked, when a current frame is carried out, an odd number sub-pixel column of the 2D display screen displays image information corresponding to a left eye, an even number sub-pixel column of the 2D display screen displays image information corresponding to a right eye, the second polarization state adjusting unit is in a first preset working state, the first polarization state adjusting unit is in a second preset working state, the image information corresponding to the left eye enters the left eye of the user, the image information corresponding to the right eye enters the right eye of the user, when the next frame of the current frame is carried out, the image information corresponding to the right eye is displayed on the odd-numbered sub-pixel columns of the 2D display screen, the image information corresponding to the left eye is displayed on the even-numbered sub-pixel columns of the 2D display screen, the first polarization state adjusting unit is in a second preset working state, the second polarization state adjusting unit is in the second preset working state, the image information corresponding to the left eye enters the left eye of the user, and the image information corresponding to the right eye enters the right eye of the user. The left-eye information displayed by the odd sub-pixel columns of the 2D display unit in the current frame can be realized in the 2D display state, may enter the user's left eye, the right eye information displayed by the even sub-pixel columns may enter the user's right eye, the right-eye information displayed by the odd sub-pixel columns of the 2D display unit at the next frame of the current frame may enter the right eye of the user, the left-eye information displayed by the even sub-pixel columns of the 2D display unit may enter the left eye of the user, therefore, the odd sub-pixel column and the even sub-pixel column of the 2D display unit can alternately display information corresponding to the left eye and information corresponding to the right eye at the time interval of the frame while realizing the 3D display effect, therefore, the resolution ratio is not lost when the three-dimensional display device carries out 3D display, and the problem that the resolution ratio is lost when the images with different parallaxes are simultaneously provided for the left eye and the right eye at the same time in a space division mode in the prior art is solved.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention are clearly and completely described above with reference to the drawings in 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. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the above detailed description of the embodiments of the invention presented in the drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (7)
1. A stereoscopic display apparatus, comprising:
the first polarization state adjusting unit comprises a first substrate, a first electrode layer, a first liquid crystal layer, a second electrode layer and a second substrate which are sequentially stacked;
the second polarization state adjusting unit is arranged on one side of the first polarization state adjusting unit and comprises a third substrate, a third electrode layer, a second liquid crystal layer, a fourth electrode layer and a fourth substrate which are sequentially stacked;
the 2D display screen is arranged on one side, away from the first polarization state adjusting unit, of the second polarization state adjusting unit;
and a liquid crystal lens unit disposed on a side of the first polarization state adjustment unit away from the second polarization state adjustment unit;
when the current frame is in a 3D display state, the odd sub-pixel columns of the 2D display screen display image information corresponding to a left eye, the even sub-pixel columns of the 2D display screen display image information corresponding to a right eye, the second polarization state adjusting unit is in a first preset working state, the first polarization state adjusting unit is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user;
when the current frame is in a 3D display state, the odd sub-pixel columns of the 2D display screen display image information corresponding to the right eye, the even sub-pixel columns of the 2D display screen display image information corresponding to the left eye, the first polarization state adjusting unit is in a second preset working state, the second polarization state adjusting unit is in the second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user;
the liquid crystal lens unit comprises a film base material, a lens microstructure and a liquid crystal coating, the liquid crystal coating is close to the first polarization state adjusting unit, the lens microstructure is arranged on one side of the film base material, and the liquid crystal coating is arranged on one side, far away from the film base material, of the lens microstructure;
the liquid crystal coating comprises a plurality of sub liquid crystal coatings with preset structures, the cross sections of the preset structures are in preset shapes, the film substrate opposite to the sub liquid crystal coatings with the preset structures and the lens microstructures opposite to the sub liquid crystal coatings with the preset structures form lens units, and each lens unit is opposite to two adjacent sub pixel columns of the 2D display screen;
the refractive index of the lens microstructure is a first refractive index, and the first refractive index is between the ordinary refractive index and the extraordinary refractive index; when the current frame is a current frame, a voltage difference exists between one or more electrodes of the first electrode layer and one or more electrodes of the second electrode layer, a voltage difference does not exist between one or more electrodes of the third electrode layer and one or more electrodes of the fourth electrode layer, and the refractive index of light, which is incident to the liquid crystal coating through the first polarization state adjusting unit, of the liquid crystal coating is a constant light refractive index, so that image information corresponding to a left eye enters a left eye of a user, and image information corresponding to a right eye enters a right eye of the user; when the current frame is the next frame of the current frame, a voltage difference exists between one or more electrodes of the first electrode layer and one or more electrodes of the second electrode layer, a voltage difference exists between one or more electrodes of the third electrode layer and one or more electrodes of the fourth electrode layer, and the refractive index of light which is incident to the liquid crystal coating through the first polarization state adjusting unit and corresponds to the liquid crystal coating is an extraordinary light refractive index, so that image information corresponding to a left eye enters the left eye of a user, and image information corresponding to a right eye enters the right eye of the user.
2. The stereoscopic display apparatus according to claim 1, wherein the first electrode layer comprises a first electrode layer electrode, the second electrode layer comprises a second electrode layer electrode, and the first electrode layer electrode and the second electrode layer electrode are planar electrodes.
3. The stereoscopic display apparatus according to claim 2, wherein an included angle between the orientation direction of the first electrode layer electrode and the orientation direction of the second electrode layer is a first preset included angle.
4. The stereoscopic display apparatus according to claim 1, wherein the third electrode layer comprises a third electrode layer electrode, the fourth electrode layer comprises a fourth electrode layer electrode, and the third electrode layer electrode and the fourth electrode layer electrode are planar electrodes.
5. The stereoscopic display apparatus according to claim 4, wherein an included angle between the orientation direction of the third electrode layer electrode and the orientation direction of the fourth electrode layer is a second preset included angle.
6. The stereoscopic display apparatus according to claim 1, wherein the refractive index of the lens microstructure is a first refractive index between an ordinary refractive index and an extraordinary refractive index; when no voltage difference exists between the one or more electrodes of the first electrode layer and the one or more electrodes of the second electrode layer, no voltage difference exists between the one or more electrodes of the third electrode layer and the one or more electrodes of the fourth electrode layer, and the refractive index of the light which is incident to the liquid crystal coating layer through the first polarization state adjusting unit and corresponds to the liquid crystal coating layer is the same as the first refractive index, so that the image information displayed by the 2D display screen enters the left eye and the right eye of a user at the same time, and the 2D display state is realized.
7. A method for controlling a stereoscopic display apparatus, applied to the stereoscopic display apparatus according to any one of claims 1 to 6, the method comprising:
when the current frame is in a 3D display state, controlling odd-numbered sub-pixel columns of the 2D display screen to display image information corresponding to a left eye, even-numbered sub-pixel columns of the 2D display screen to display image information corresponding to a right eye, the second polarization state adjusting unit is in a first preset working state, the first polarization state adjusting unit is in a second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user;
when the current frame is in a 3D display state, the odd sub-pixel columns of the 2D display screen are controlled to display image information corresponding to the right eye, the even sub-pixel columns of the 2D display screen display image information corresponding to the left eye, the first polarization state adjusting unit is in a second preset working state, the second polarization state adjusting unit is in the second preset working state, so that the image information corresponding to the left eye enters the left eye of a user, and the image information corresponding to the right eye enters the right eye of the user.
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| CN109597240A (en) * | 2019-01-30 | 2019-04-09 | 惠科股份有限公司 | Optical film layer and display device |
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| CN1885096A (en) * | 2005-06-25 | 2006-12-27 | 三星电子株式会社 | 2d and 3d image displaying device |
| CN102749717A (en) * | 2012-07-27 | 2012-10-24 | 深圳超多维光电子有限公司 | Autostereoscopic display device |
| CN104678560A (en) * | 2015-03-03 | 2015-06-03 | 深圳超多维光电子有限公司 | Stereoscopic display device |
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| JP2014209170A (en) * | 2013-03-22 | 2014-11-06 | 株式会社東芝 | Liquid crystal optical device, solid-state imaging device, portable information terminal, and display unit |
| CN107728363B (en) * | 2017-10-26 | 2020-08-11 | 宁波视睿迪光电有限公司 | Stereoscopic display device and control method thereof |
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| CN1885096A (en) * | 2005-06-25 | 2006-12-27 | 三星电子株式会社 | 2d and 3d image displaying device |
| CN102749717A (en) * | 2012-07-27 | 2012-10-24 | 深圳超多维光电子有限公司 | Autostereoscopic display device |
| CN104678560A (en) * | 2015-03-03 | 2015-06-03 | 深圳超多维光电子有限公司 | Stereoscopic display device |
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