CN107132690B - Naked eye 3D system - Google Patents
Naked eye 3D system Download PDFInfo
- Publication number
- CN107132690B CN107132690B CN201710532826.6A CN201710532826A CN107132690B CN 107132690 B CN107132690 B CN 107132690B CN 201710532826 A CN201710532826 A CN 201710532826A CN 107132690 B CN107132690 B CN 107132690B
- Authority
- CN
- China
- Prior art keywords
- liquid crystal
- type liquid
- crystal layer
- wave plate
- polarization grating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 114
- 230000010287 polarization Effects 0.000 claims abstract description 92
- 230000003287 optical effect Effects 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims 31
- 238000001914 filtration Methods 0.000 claims 1
- 239000011241 protective layer Substances 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 230000005684 electric field Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 210000002858 crystal cell Anatomy 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004988 Nematic liquid crystal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
Images
Classifications
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B30/00—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images
- G02B30/20—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes
- G02B30/22—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type
- G02B30/25—Optical systems or apparatus for producing three-dimensional [3D] effects, e.g. stereoscopic images by providing first and second parallax images to an observer's left and right eyes of the stereoscopic type using polarisation techniques
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/1396—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent the liquid crystal being selectively controlled between a twisted state and a non-twisted state, e.g. TN-LC cell
-
- 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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/13363—Birefringent elements, e.g. for optical compensation
- G02F1/133638—Waveplates, i.e. plates with a retardation value of lambda/n
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a naked eye 3D system, comprising: the liquid crystal display device comprises a liquid crystal display panel, a first TN (twisted nematic) type liquid crystal layer, a first wave plate, a first polarization grating plate, a second wave plate, a second TN type liquid crystal layer, a third wave plate, a second polarization grating plate and a controller; the liquid crystal display panel, the first TN type liquid crystal layer, the first wave plate, the first polarization grating plate, the second wave plate, the second TN type liquid crystal layer, the third wave plate and the second polarization grating plate are mutually parallel and are sequentially attached; the controller is electrically connected with the first TN type liquid crystal layer, the second TN type liquid crystal layer, the first polarization grating plate and the second polarization grating plate respectively. The naked eye 3D system has the characteristics of high resolution, thin system thickness, easy integration and the like, and simultaneously has the function of 2D/3D conversion without influencing the structure of the original liquid crystal display screen; and has great advantages and application prospect when being applied to a portable display.
Description
Technical Field
The invention belongs to the technical field of 3D display, and particularly relates to a naked eye 3D system.
Background
The naked eye 3D display technology is a new high-tech display technology. The technology has a shocking three-dimensional visual experience and a strong sense of content introduction, and meanwhile, a user can watch a 3D effect without wearing any auxiliary equipment, so that much attention is paid to the user. The technology mainly utilizes the principle that two different images with parallax are obtained by the left eye and the right eye of a person respectively so as to generate a three-dimensional visual effect. The naked-eye 3D technology developed at present is mostly based on the space division multiplexing principle of pixel points on a liquid crystal display panel, for example, two left and right viewing images are loaded on pixel points of odd columns and pixel points of even columns on the liquid crystal display panel respectively at the same time, and then the viewer experiences a 3D visual effect through the shielding principle of the slit grating on light emitted by the pixel points or the refraction principle of the lenticular lens array on the light. However, in any case, the slit grating has a feature of low resolution, not easy to integrate with an existing portable display or the like, and also has a feature of low luminance. Therefore, products developed according to the current technical scheme cannot be popular in the market and cannot be popularized.
Therefore, how to provide a naked eye 3D system to solve the defects of the prior art, such as low resolution, difficult integration, and low brightness of the slit grating, has become a technical problem to be solved by practitioners in the art.
Disclosure of Invention
In view of the above disadvantages of the prior art, an object of the present invention is to provide a naked eye 3D system, which is used to solve the problems of the prior art that the resolution is low, the integration is not easy, and the brightness of the slit grating is low.
To achieve the above and other related objects, the present invention provides a naked eye 3D system, comprising: the liquid crystal display device comprises a liquid crystal display panel, a first TN (twisted nematic) type liquid crystal layer, a first wave plate, a first polarization grating plate, a second wave plate, a second TN type liquid crystal layer, a third wave plate, a second polarization grating plate and a controller; the liquid crystal display panel, the first TN type liquid crystal layer, the first wave plate, the first polarization grating plate, the second wave plate, the second TN type liquid crystal layer, the third wave plate and the second polarization grating plate are mutually parallel and are sequentially attached; the controller is electrically connected with the first TN type liquid crystal layer, the second TN type liquid crystal layer, the first polarization grating plate and the second polarization grating plate respectively.
In an embodiment of the invention, the first TN liquid crystal layer and the second TN liquid crystal layer are TN liquid crystal layers having transparent electrode layers respectively disposed on two sides thereof.
In an embodiment of the invention, the controller is electrically connected to the transparent electrode layers of the first TN liquid crystal layer and the second TN liquid crystal layer, and is configured to periodically apply a voltage to the transparent electrode layers to control a polarization state of the polarized light emitted from the liquid crystal display panel after passing through the first TN liquid crystal layer and the second TN liquid crystal layer.
In an embodiment of the invention, a first side of the first TN type liquid crystal layer, which is provided with the transparent electrode layer, is attached to a light-emitting side of a color filter film protection layer in a liquid crystal display panel, and a second side of the first TN type liquid crystal layer, which is provided with the transparent electrode layer, is attached to one side of the first wave plate; the first side, provided with the transparent electrode layer, of the second TN type liquid crystal layer is attached to one side of the second wave plate, and the second side, provided with the transparent electrode layer, of the second TN type liquid crystal layer is attached to one side of the third wave plate.
In an embodiment of the invention, the first polarization grating plate and the second polarization grating plate are polarization grating plates with transparent electrode layers respectively disposed on two sides.
In an embodiment of the invention, a first side of the first polarization grating plate provided with the transparent electrode layer is attached to the other side of the first wave plate, and a second side of the first polarization grating plate provided with the transparent electrode layer is attached to the other side of the second wave plate; the first side of the second polarization grating plate provided with the transparent electrode layer is attached to the other side of the third wave plate.
In an embodiment of the invention, the controller is electrically connected to the transparent electrode layers of the first polarization grating plate and the second polarization grating plate, and is configured to load a voltage on the transparent electrode layer when the naked-eye 3D system needs to be switched from the 3D mode to the 2D mode, so as to cancel the directional diffraction characteristic of the polarization grating.
In an embodiment of the invention, an update frequency of a picture loaded on the liquid crystal display panel is consistent with a switching frequency of emergent light of the naked eye 3D system.
In an embodiment of the invention, the liquid crystal display panel includes an LCD display panel.
In an embodiment of the present invention, the first wave plate, the second wave plate and the third wave plate are broadband quarter wave plates; the optical axis of the broadband quarter-wave plate is 45 degrees to the incident linear polarization vibration direction.
As described above, the naked eye 3D system of the present invention has the following beneficial effects:
firstly, the naked eye 3D system has the characteristics of high resolution, thin system thickness, easy integration and the like, simultaneously has the function of 2D/3D conversion, and does not influence the structure of the original liquid crystal display screen;
secondly, the naked eye 3D system has great advantages and application prospects in the field of naked eye 3D display, and is particularly applied to portable displays.
Drawings
Fig. 1 is a schematic structural diagram of the naked-eye 3D system of the present invention.
Description of the element reference numerals
1 naked eye 3D system
11 liquid crystal display panel
12 first TN type liquid crystal layer
13 first wave plate
14 first polarization grating plate
15 second wave plate
16 second TN type liquid crystal layer
17 third wave plate
18 second polarization grating plate
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
Please refer to fig. 1. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The present embodiment provides a naked eye 3D system, including:
the liquid crystal display device comprises a liquid crystal display panel, a first TN (twisted nematic) type liquid crystal layer, a first wave plate, a first polarization grating plate, a second wave plate, a second TN type liquid crystal layer, a third wave plate, a second polarization grating plate and a controller;
the liquid crystal display panel, the first TN type liquid crystal layer, the first wave plate, the first polarization grating plate, the second wave plate, the second TN type liquid crystal layer, the third wave plate and the second polarization grating plate are parallel to each other and are sequentially attached to each other, and the controller is electrically connected with the first TN type liquid crystal layer, the second TN type liquid crystal layer, the first polarization grating plate and the second polarization grating plate respectively.
The naked-eye 3D system provided by the present embodiment will be described in detail with reference to the drawings. Please refer to fig. 1, which is a schematic structural diagram of a naked eye 3D system. As shown in fig. 1, the naked-eye 3D system 1 includes a liquid crystal display panel 11, a first TN liquid crystal layer 12, a first wave plate 13, a first polarization grating plate 14, a second wave plate 15, a second TN liquid crystal layer 16, a third wave plate 17, a second polarization grating plate 18, and a controller (not shown).
The liquid crystal display panel 11, the first TN type liquid crystal layer 12, the first wave plate 13, the first polarization grating plate 14, the second wave plate 15, the second TN type liquid crystal layer 16, the third wave plate 17, and the second polarization grating plate 18 are parallel to each other and are sequentially attached to each other.
In the present embodiment, the liquid crystal display panel 11 includes an LCD display panel, but is not limited to the LCD display panel. The first TN type liquid crystal layer 12 and the second TN type liquid crystal layer 16 are TN type liquid crystal layers having transparent electrode layers respectively disposed on both sides thereof. The first wave plate 13, the second wave plate 15 and the third wave plate 17 adopt broadband quarter wave plates; the optical axis of the broadband quarter-wave plate is 45 degrees to the incident linear polarization vibration direction. The first polarization grating plate 14 and the second polarization grating plate 18 are polarization grating plates with transparent electrode layers respectively arranged on both sides.
In this embodiment, the TN liquid crystal layer may rotate the polarization direction of the passing linearly polarized light by 90 °, and the electric field applied thereon can cancel the polarization characteristic of the liquid crystal layer, so that the polarization direction of the linearly polarized light passing through the liquid crystal layer is not changed, i.e. whether the voltage is applied to the transparent electrode layer of the TN liquid crystal layer is controlled to control the presence or absence of the electric field in the liquid crystal cell, thereby further controlling the polarization state of the polarized light after passing through the liquid crystal layer.
The naked eye 3D system 1 has the following specific structure: the first TN type liquid crystal layer 12 is attached to the light-emitting side of the color filter film protection layer in the LCD display panel 11 at a first side (as shown in the figure, the front side of the first TN type liquid crystal layer 12 is shown in the figure), the first TN type liquid crystal layer 12 is attached to one side (as shown in the figure, the front side of the first wave plate 13) of the first wave plate 13 at a second side (as shown in the figure, the rear side of the first wave plate 13) of the transparent electrode layer, the other side (as shown in the figure, the rear side of the first wave plate 13) of the first wave plate 13 is attached to one side (as shown in the figure, the front side of the first polarization grating plate 14) of the first polarization grating plate 14 at which the transparent electrode layer is provided, and the second side (as shown in the figure, the front side of the second wave plate 15) of the first polarization grating plate 14 at which the transparent electrode layer is provided; one side of the second wave plate 15 (as shown in the figure, the back side of the second wave plate 15) is attached to the first side of the second TN type liquid crystal layer 16 (as shown in the figure, the front side of the second TN type liquid crystal layer 16), the second side of the second TN type liquid crystal layer 16 (as shown in the figure, the back side of the second TN type liquid crystal layer 16) is attached to one side of the third wave plate 17 (as shown in the figure, the front side of the third wave plate 17), and the other side of the third wave plate 17 (as shown in the figure, the back side of the third wave plate 17) is attached to the first side of the second polarization grating plate 18 (as shown in the figure, the front side of the second polarization grating 18).
In the present embodiment, the controller (not shown) is electrically connected to the first TN liquid crystal layer 12, the second TN liquid crystal layer 16, the first polarization grating plate 14, and the second polarization grating plate 18, respectively.
Specifically, the controller is electrically connected to the transparent electrode layers of the first TN type liquid crystal layer and the second TN type liquid crystal layer, and is configured to periodically apply a voltage to the transparent electrode layers to control a polarization state of polarized light emitted from the liquid crystal display panel after passing through the transparent electrode layers.
The controller is electrically connected to the transparent electrode layers of the first polarization grating plate and the second polarization grating plate and used for loading voltage on the transparent electrode layers when the naked eye 3D system needs to be switched from a 3D mode to a 2D mode so as to cancel the directional diffraction characteristic of the polarization gratings; or when the naked eye 3D system needs to be switched from a 2D mode to a 3D mode, no voltage is loaded on the transparent electrode layer, so that the directional diffraction characteristic of the polarization grating is realized.
The specific working process of the naked eye 3D system is as follows:
first, the linearly polarized light emitted from the color filter of the LCD panel 11 enters the first TN type liquid crystal layer 12 with a transparent electrode layer, the first TN type liquid crystal layer 12 controls the presence or absence of an electric field in the liquid crystal cell by controlling whether to apply a voltage to the transparent electrode layer, so as to further control the polarization state of the polarized light after passing through the liquid crystal layer (for example, in fig. 1, a straight line between the first TN type liquid crystal layer 12 and the first wave plate 13 represents the polarized light of which the polarization direction is perpendicular to the plane at a certain moment, a twisted curve represents the polarized light of which the polarization direction is parallel to the plane at another moment, and the polarization directions of the straight line and the twisted curve are orthogonal, in this embodiment, whether the electric field is present in the first TN type liquid crystal layer 12 is controlled, so as to control whether the first TN type liquid crystal layer 12 has a characteristic of changing the polarization direction of incident light, so as to control the emergent light of the first, and only one polarization state of light exits at a certain time)
Then, the outgoing light from the first TN-mode liquid crystal layer 12 passes through the broadband quarter-wave plate 13, and since the optical axis of the corresponding broadband quarter-wave plate 13 is set at an angle of 45 ° to the vibration direction of the incoming linearly polarized light, the linearly polarized light passes through the broadband quarter-wave plate 13 and is converted into circularly polarized light, that is, the vertically polarized light is incident into left-handed circularly polarized light, and the horizontally polarized light is incident into right-handed circularly polarized light.
Then, the circularly polarized light is incident on the first polarization grating plate 14 having the front and rear transparent electrode layers. The first polarization grating plate 14 with the front and the back transparent electrode layers does not load voltage on the transparent electrode layers in a 3D mode, when left-handed circularly polarized light is incident on the first polarization grating plate 14, right-handed circularly polarized diffracted light of-1 level can be generated, and the direction of the right-handed circularly polarized diffracted light forms a certain angle with the normal direction of the polarization grating; when the right-handed circularly polarized light is incident on the first polarization grating plate 14, a + 1-order left-handed circularly polarized diffracted light is generated, and the direction of the left-handed circularly polarized diffracted light forms a certain angle with the normal direction of the polarization grating.
Then, the diffracted circular polarized light is incident on the broadband quarter-wave plate array 15, and the left-hand circular polarized light or the right-hand circular polarized light in the two diffraction directions is converted into orthogonal linear polarized light. Passing the orthogonal linearly polarized light through a second TN mode liquid crystal layer 16 having a transparent electrode layer, wherein when no voltage is applied to the transparent electrode layer, the polarization states of the orthogonal linearly polarized light after passing through the transparent electrode layer are respectively changed by 90 °; when a voltage is applied to the transparent electrode layer, the polarization state of the orthogonal linear polarized light is not changed after passing through the liquid crystal layer. Therefore, a set of orthogonal linear polarizations is obtained in both diffraction directions depending on the presence or absence of the electric field in the transparent electrode layer.
The orthogonal linear polarized light then passes through the broadband quarter-wave plate 17 to convert the two sets of orthogonal linear polarized light in the two diffraction directions into two sets of orthogonal circular polarized light.
And finally, allowing the two groups of orthogonal circular polarized light to pass through a second polarization grating plate 18 with a front transparent electrode layer and a rear transparent electrode layer, and obtaining four diffracted lights in different directions according to the diffraction principle of the polarization grating. The whole system controls the existence of an electric field in the liquid crystal layer by controlling the transparent electrode layers in front of and behind the two twisted nematic liquid crystal layers 12 and 16, so that emergent light of the system is controlled to be switched continuously in four directions, and the switching frequency is 96 times per second. Meanwhile, the updating frequency of the picture loaded on the liquid crystal display panel is consistent with the switching frequency of emergent light of the naked eye 3D system. In this embodiment, since four images with parallax are loaded on the LCD display panel 11, and since human eyes have persistence of vision effect, the left and right eyes of human eyes receive parallax images from two different directions at the same time, so that the naked-eye 3D effect can be perceived. Since human eyes can observe parallax images in any two different directions to generate a 3D visual effect, the naked eye 3D system 1 has a plurality of viewpoints from which the 3D effect can be observed.
In this embodiment, after applying a voltage to the transparent electrode layers on the front and back of the first polarization grating plate 14 and the second polarization grating plate 18, an electric field is generated in the polarization grating, and the electric field cancels the diffraction characteristics of the electric field, so that the light passing through the electric field is not directionally diffracted, thereby realizing the conversion of the naked-eye 3D system from the 3D mode to the 2D mode.
In conclusion, the naked eye 3D system has the characteristics of high resolution, thin system thickness, easiness in integration and the like, has the function of 2D/3D conversion, does not influence the structure of the original liquid crystal display screen, and has great advantages and application prospects in the field of naked eye 3D display, particularly in application to portable displays. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. An naked eye 3D system, comprising:
the liquid crystal display device comprises a liquid crystal display panel, a first TN (twisted nematic) type liquid crystal layer, a first wave plate, a first polarization grating plate, a second wave plate, a second TN type liquid crystal layer, a third wave plate, a second polarization grating plate and a controller;
the liquid crystal display panel, the first TN type liquid crystal layer, the first wave plate, the first polarization grating plate, the second wave plate, the second TN type liquid crystal layer, the third wave plate and the second polarization grating plate are mutually parallel and are sequentially attached; the first TN type liquid crystal layer and the second TN type liquid crystal layer are TN type liquid crystal layers, and transparent electrode layers are respectively arranged on two sides of the TN type liquid crystal layers; the first side of the transparent electrode layer of the first TN type liquid crystal layer is attached to the light emergent side of the color light filtering film protective layer in the liquid crystal display panel, and the second side of the transparent electrode layer of the first TN type liquid crystal layer is attached to one side of the first wave plate; the first side of the transparent electrode layer of the second TN type liquid crystal layer is attached to one side of the second wave plate, and the second side of the transparent electrode layer of the second TN type liquid crystal layer is attached to one side of the third wave plate;
the controller is electrically connected with the first TN type liquid crystal layer, the second TN type liquid crystal layer, the first polarization grating plate and the second polarization grating plate respectively; the controller is electrically connected to the transparent electrode layers of the first TN type liquid crystal layer and the second TN type liquid crystal layer and used for periodically loading voltage on the transparent electrode layers so as to control the polarization state of polarized light emitted by the liquid crystal display panel after passing through the first TN type liquid crystal layer and the second TN type liquid crystal layer.
2. The naked eye 3D system of claim 1, wherein the first polarization grating plate and the second polarization grating plate are polarization grating plates with transparent electrode layers respectively arranged on two sides.
3. The naked eye 3D system according to claim 2, wherein a first side of the first polarization grating plate provided with the transparent electrode layer is attached to the other side of the first wave plate, and a second side of the first polarization grating plate provided with the transparent electrode layer is attached to the other side of the second wave plate; the first side of the second polarization grating plate provided with the transparent electrode layer is attached to the other side of the third wave plate.
4. The naked eye 3D system of claim 2, wherein the controller is electrically connected to the transparent electrode layers of the first polarization grating plate and the second polarization grating plate, and is configured to load a voltage on the transparent electrode layers to cancel directional diffraction characteristics of the polarization gratings when the naked eye 3D system needs to be switched from a 3D mode to a 2D mode.
5. The naked eye 3D system according to claim 1, wherein the update frequency of the picture loaded on the liquid crystal display panel is consistent with the switching frequency of the emergent light of the naked eye 3D system.
6. The naked eye 3D system of claim 1, wherein: the first wave plate, the second wave plate and the third wave plate adopt broadband quarter wave plates; the optical axis of the broadband quarter-wave plate is 45 degrees to the incident linear polarization vibration direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532826.6A CN107132690B (en) | 2017-07-03 | 2017-07-03 | Naked eye 3D system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710532826.6A CN107132690B (en) | 2017-07-03 | 2017-07-03 | Naked eye 3D system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107132690A CN107132690A (en) | 2017-09-05 |
| CN107132690B true CN107132690B (en) | 2020-02-21 |
Family
ID=59736222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710532826.6A Expired - Fee Related CN107132690B (en) | 2017-07-03 | 2017-07-03 | Naked eye 3D system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107132690B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112378858B (en) * | 2020-11-11 | 2021-08-20 | 上海交通大学 | Chiral detection system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005018056A (en) * | 2003-06-04 | 2005-01-20 | Arisawa Mfg Co Ltd | Three-dimensional image display apparatus |
| JP2005128167A (en) * | 2003-10-22 | 2005-05-19 | Nippon Telegr & Teleph Corp <Ntt> | 3-dimensional display device |
| CN102246089A (en) * | 2008-10-09 | 2011-11-16 | 北卡罗莱纳州立大学 | Polarization-independent liquid crystal display devices including multiple polarization grating arrangements and related devices |
| CN102749717A (en) * | 2012-07-27 | 2012-10-24 | 深圳超多维光电子有限公司 | Autostereoscopic display device |
| CN103823308A (en) * | 2014-03-04 | 2014-05-28 | 四川大学 | Integrated-imaging double-vision 3D (Three-Dimensional) display device based on polarization gratings |
| CN104204926A (en) * | 2012-01-26 | 2014-12-10 | 视瑞尔技术公司 | Display with observer tracking |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI328714B (en) * | 2008-10-09 | 2010-08-11 | Au Optronics Corp | Switchable two and three dimensional display |
-
2017
- 2017-07-03 CN CN201710532826.6A patent/CN107132690B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005018056A (en) * | 2003-06-04 | 2005-01-20 | Arisawa Mfg Co Ltd | Three-dimensional image display apparatus |
| JP2005128167A (en) * | 2003-10-22 | 2005-05-19 | Nippon Telegr & Teleph Corp <Ntt> | 3-dimensional display device |
| CN102246089A (en) * | 2008-10-09 | 2011-11-16 | 北卡罗莱纳州立大学 | Polarization-independent liquid crystal display devices including multiple polarization grating arrangements and related devices |
| CN104204926A (en) * | 2012-01-26 | 2014-12-10 | 视瑞尔技术公司 | Display with observer tracking |
| CN102749717A (en) * | 2012-07-27 | 2012-10-24 | 深圳超多维光电子有限公司 | Autostereoscopic display device |
| CN103823308A (en) * | 2014-03-04 | 2014-05-28 | 四川大学 | Integrated-imaging double-vision 3D (Three-Dimensional) display device based on polarization gratings |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107132690A (en) | 2017-09-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5113285A (en) | Full color three-dimensional flat panel display | |
| JP5852124B2 (en) | Stereoscopic display system, glasses used in the system, and display method therefor | |
| WO2012048485A1 (en) | Two dimension/three dimension switchable liquid crystal lens assembly and display device | |
| WO2014196125A1 (en) | Image display device and liquid crystal lens | |
| CN102799024A (en) | Two-dimensional/three-dimensional image switchable liquid crystal display | |
| CN104678560B (en) | 3 d display device | |
| JP2007535685A (en) | Pixel layout for autostereoscopic display | |
| WO2017148010A1 (en) | Liquid crystal display and electronic apparatus | |
| CN104020624A (en) | Naked eye 3D display device | |
| CN103348269A (en) | Fresnel lens structure and 2D/3D switchable image display apparatus using same | |
| CN102540550A (en) | Display device and control method and display control device thereof | |
| CN102540487A (en) | Two-dimensional (2D)/three-dimensional (3D) switchable display device | |
| CN104820292A (en) | Naked-eye three-dimensional display method and device based on parallax error | |
| KR101298874B1 (en) | Polarizing Glasses | |
| US20130235305A1 (en) | Optical device, display apparatus and electronic apparatus | |
| CN102890344B (en) | 3D display device and 3D display device | |
| CN103226247B (en) | A kind of 3 d display device and stereo display method | |
| CN102331636A (en) | Liquid crystal display panel and three-dimensional display device | |
| KR20140028475A (en) | Liquid crystal lens panel, three dimensional panel assembly and display apparatus having the same | |
| CN107132690B (en) | Naked eye 3D system | |
| CN202794719U (en) | 3D display device and 3D display apparatus | |
| RU183810U1 (en) | Device for creating dynamic holographic images in space | |
| KR20100137725A (en) | Switchable 3d filter and switchable 3d device using the same | |
| KR100662046B1 (en) | Liquid Crystal Display Device Having Thin Film Polarizers and Retarders | |
| CN114415391A (en) | Stereoscopic display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200221 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |