CN108957770A - A kind of optics module and display device that 2D-3D is changeable - Google Patents
A kind of optics module and display device that 2D-3D is changeable Download PDFInfo
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- CN108957770A CN108957770A CN201811113364.5A CN201811113364A CN108957770A CN 108957770 A CN108957770 A CN 108957770A CN 201811113364 A CN201811113364 A CN 201811113364A CN 108957770 A CN108957770 A CN 108957770A
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- 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
- G02B30/26—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 autostereoscopic type
- G02B30/27—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 autostereoscopic type involving lenticular arrays
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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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
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- Crystallography & Structural Chemistry (AREA)
- Geometry (AREA)
- Dispersion Chemistry (AREA)
Abstract
The invention discloses a kind of 2D-3D switchable optical mould groups.The 2D-3D switchable optical mould group includes: lens jacket and the light modulation film positioned at lens jacket side；Light modulation film includes existing mist state and transparent state；When light modulation film is in mist state, the light beam through light modulation film outgoing is the equally distributed scattering light of each shooting angle；When light modulation film is in transparent state, the direction of propagation of the light beam through light modulation film outgoing is identical as the direction of propagation for the incident beam for being incident to light modulation film；The refractive index when refractive index of lens jacket is in transparent state from light modulation film is different.2D-3D switchable optical mould group provided in this embodiment, including light modulation film and lens jacket, when light modulation film is mist state, the light beam being emitted from the 2D-3D switchable optical mould group is that shooting angle uniformly scatters light, therefore, when 2D-3D switchable optical mould group is applied to the progress 2D display of 2D-3D switchable display device, the picture quality that 2D is shown can be improved to avoid the lens residual phenomena that 2D is shown.
Description
Technical Field
The embodiment of the invention relates to the technical field of stereoscopic display, in particular to a 2D-3D switchable optical module and a display device.
Background
With the development of stereoscopic display technology, 2D-3D switchable display devices having both 2D and 3D display functions have been developed, and the 2D-3D switchable display devices are more popular with users than simple 2D display devices or 3D display devices.
Fig. 1 is a schematic structural view of a conventional 2D-3D switchable display device, which includes an upper substrate 101 and a lower substrate 102 disposed opposite to each other, and liquid crystal molecules 103 and an optical lens 104 between the upper substrate 101 and the lower substrate 102; a display panel 105 is also included on a side of the upper substrate 101 remote from the lower substrate 102. During 2D display, the long axis direction of the liquid crystal molecules 103 is parallel to the second direction Y, and the refractive index of the long axis direction of the liquid crystal molecules 103 is the same as the refractive index of the optical lens 104, so that light beams can pass through the liquid crystal molecules 103 and the optical lens 104 along the original propagation direction without converging, thereby realizing a 2D display effect. During 3D display, due to the presence of an electric field between the upper substrate 101 and the lower substrate 102, the electric field can make the long axis direction of the liquid crystal molecules 103 parallel to the first direction X, and due to the difference between the refractive index of the optical lens 104 and the refractive index of the short axis direction of the liquid crystal molecules 103, a directional refraction occurs when a light beam passes through the interface between the liquid crystal molecules 103 and the optical lens 104, and the light beam is converged, thereby realizing a 3D display effect.
Fig. 2 is an optical schematic diagram of a conventional 2D-3D switchable display device in 2D display. In the 2D display mode, it is not always possible for the viewer to look at the screen, i.e. the direction of the light ray 115 in fig. 2, when actually viewing the screen. The viewing angle varies with the viewing area, and therefore, the angle between the light emitted from the display panel and the long axis of the liquid crystal molecules 103 is different at different viewing angles. Such as light 125 and light 135 in fig. 2, and thus may exhibit different indices of refraction than would be the case if the screen were viewed orthographically. This problem may cause the refractive index of the liquid crystal molecules to vary with the viewing angle when the 2D image is displayed, so that the viewer still sees the lens effect when viewing at a large viewing angle, which may affect the 2D viewing experience.
Disclosure of Invention
The invention provides a 2D-3D switchable optical module and a display device, which are used for preventing a viewer from generating a lens effect when watching a 2D picture.
In a first aspect, an embodiment of the present invention provides a 2D-3D switchable optical module, including:
the light adjusting film comprises a lens layer and a light adjusting film positioned on one side of the lens layer;
the light adjusting film comprises a mist state and a transparent state; when the light adjusting film is in a fog state, light beams emitted by the light adjusting film are scattered light which is uniformly distributed at each emission angle; when the light adjusting film is in a transparent state, the transmission direction of a light beam emitted by the light adjusting film is the same as the transmission direction of an incident light beam incident to the light adjusting film; the refractive index of the lens layer is different from the refractive index of the light adjusting film in a transparent state.
Further, the light adjusting film includes:
a first substrate;
a second substrate;
the light modulation medium layer is positioned between the first substrate and the second substrate;
a first electrode is arranged between the dimming medium layer and the first substrate; and a second electrode is arranged between the dimming medium layer and the second substrate.
Further, the display device further comprises a third substrate and a fourth substrate;
the lens layer is positioned on one side of the fourth substrate facing the third substrate;
the light adjusting film is positioned on one side of the lens layer facing the third substrate;
a fourth electrode is arranged between the light modulation film and the third substrate; a fourth electrode is disposed between the lens layer and the fourth substrate.
Further, the lens layer is a plano-convex lens comprising a first plane and a first convex surface; the first convex surface faces one side of the light adjusting film; the light adjusting film comprises a first concave surface and a second plane which are oppositely arranged; the first concave surface faces one side of the lens layer, and the first concave surface is matched and complemented with the first convex surface.
Further, the lens layer is a plano-concave mirror comprising a third plane and a second concave surface; the second concave surface faces one side of the light adjusting film; the light adjusting film comprises a second convex surface and a fourth plane which are oppositely arranged; the second convex surface faces one side of the lens layer, and the second concave surface is embedded and complemented with the second convex surface.
Further, the light adjusting film comprises polymer dispersed liquid crystal.
Further, the light-adjusting film takes on a fog state when an external electric field is applied; when an external electric field is cancelled, the light adjusting film is in a transparent state;
or,
when an external electric field is applied, the light adjusting film is in a transparent state; when the external electric field is removed, the light adjusting film is in a fog state.
In a second aspect, an embodiment of the present invention further provides a 2D-3D switchable display device, including a backlight module, a display panel, and any one of the 2D-3D switchable optical modules of the first aspect;
wherein the 2D-3D switchable optical module is positioned between the backlight module and the display panel; the backlight module is used for providing a background light beam, and the background light beam irradiates the display panel after passing through the 2D-3D switchable optical module;
when the light adjusting film is in a fog state, the 2D-3D switchable display device performs 2D display; when the light adjusting film is in a transparent state, the 2D-3D switchable display device performs 3D display.
Further, the backlight module is a directional light source;
an included angle between a light beam emitted by the backlight module and a direction perpendicular to a plane where a light emitting surface of the backlight module is located is smaller than a preset angle.
Further, the preset angle is less than or equal to 15 °.
The switchable 2D-3D optical module provided by this embodiment includes a light adjusting film and a lens layer, where the light adjusting film has a fog state and a transparent state, and when the light adjusting film is in the fog state, a light beam emitted from the switchable 2D-3D optical module is a scattered light with a uniform emission angle, so that when the switchable 2D-3D optical module is applied to a switchable 2D-3D display device to perform 2D display, by adjusting the state of the light adjusting film to be the fog state, when the light beam entering the light adjusting film is emitted from the light adjusting film, the emission angle of the emitted light beam can be uniformly distributed, thereby avoiding a lens residue phenomenon formed when the 2D-3D switchable 2D display device including the switchable 2D-3D optical module provided by this embodiment performs 2D display, and improving the picture quality of 2D display.
Drawings
Fig. 1 is a schematic structural diagram of a conventional 2D-3D switchable display device;
fig. 2 is an optical schematic diagram of a conventional 2D-3D switchable display device in 2D display;
fig. 3 is a schematic structural diagram of a 2D-3D switchable optical module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a split structure of the 2D-3D switchable optical module of FIG. 3;
FIG. 5 is a schematic diagram of another 2D-3D switchable optical module according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a split structure of the 2D-3D switchable optical module of FIG. 5;
fig. 7 is a schematic structural diagram of a light adjusting film provided by an embodiment of the present invention;
FIG. 8 is a schematic diagram of a 2D-3D switchable optical module according to an embodiment of the present invention;
fig. 9 is a schematic structural diagram of a 2D-3D switchable display device according to an embodiment of the present invention;
fig. 10 is a schematic structural diagram of a backlight module according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Fig. 3 is a schematic structural diagram of a 2D-3D switchable optical module according to an embodiment of the present invention. Referring to fig. 3, the 2D-3D switchable optical module includes: a lens layer 201 and a light adjusting film 202 located on one side of the lens layer 201; the light adjusting film 202 includes a now fogged state and a transparent state; when the light adjusting film 202 is in a fog state, the light beam emitted by the light adjusting film 202 is scattered light with uniformly distributed emission angles; when the light modulation film 202 is in a transparent state, the propagation direction of the light beam emitted through the light modulation film 202 is the same as the propagation direction of the incident light beam incident on the light modulation film 202; the refractive index of the lens layer 201 is different from the refractive index when the light adjusting film 202 is in the transparent state.
Specifically, the 2D-3D switchable optical module provided by the embodiment of the invention can be applied to a 2D-3D switchable display device, and in the 2D-3D switchable display device, the 2D-3D switchable optical module further comprises a backlight module and a display panel for providing a light source. The light beam emitted from the backlight module can be incident to the 2D-3D switchable optical module from a side of the light adjusting film 202 in fig. 3 away from the lens layer 201. When the light modulation film 202 in the 2D-3D switchable optical module is in a fog state, at this time, the light beam incident to the light modulation film 202 from the backlight module is uniformly scattered by the light modulation film 202, and the exit angle of the light beam exiting from the light modulation film 202 can be uniformly distributed along any direction. At this time, regardless of whether the refractive index of the light adjusting film 202 is equal to the refractive index of the lens layer 201, the light flux emitted after being converged by the lens layer 201 is still scattered light with a uniform emission angle distribution, and therefore, the light flux entering the display panel is also scattered light with a uniform emission angle distribution, and thus, the light flux emitted from the display panel is also uniformly distributed. At this time, when the observer views the 2D picture on the display panel from any angle of the display panel, the phenomenon of lens residue does not occur, so the 2D-3D switchable optical module in this embodiment can avoid the problem of lens residue when the observer views the 2D picture at a large angle.
When the light modulation film 202 of the switchable 2D-3D optical module is in a transparent state, the light emitted by the backlight module passes through the light modulation film 202 and then the propagation direction of the emitted light beam is parallel to the propagation direction when the light beam enters the light modulation film 202, the refractive index of the light modulation film 202 is different from that of the lens layer 201, and the light beam incident to the lens layer 201 from the light modulation film 202 can still be refracted and converged to realize visual separation and form 3D display.
It can be understood that, because the 2D-3D switchable optical module provided in this embodiment can scatter the light beam incident to the dimming film 202 along any direction into a light beam with a uniform exit angle when the dimming film 202 is in the fog state, in order to avoid the influence on the display panel when the dimming film 202 is in the fog state, the dimming film can be disposed on a side away from the light exit surface of the display panel, and optionally, the 2D-3D switchable optical module in this embodiment is disposed between the backlight module and the display panel.
It should be noted that, although the present embodiment describes the functions of the 2D-3D switchable optical module by means of the display panel and the backlight module, it is understood that the structure and the functions of the 2D-3D switchable optical module provided in the present embodiment do not depend on the display panel and the backlight module. The 2D-3D switchable optical module provided in this embodiment may be integrally processed with other structures in the 2D-3D switchable display device, or may form a separate device, which is not particularly limited in this embodiment.
The switchable 2D-3D optical module provided by this embodiment includes a light adjusting film and a lens layer, where the light adjusting film has a fog state and a transparent state, and when the light adjusting film is in the fog state, a light beam emitted from the switchable 2D-3D optical module is a scattered light with a uniform emission angle, so that when the switchable 2D-3D optical module is applied to a switchable 2D-3D display device to perform 2D display, by adjusting the state of the light adjusting film to be the fog state, when the light beam entering the light adjusting film is emitted from the light adjusting film, the emission angle of the emitted light beam can be uniformly distributed, thereby avoiding a lens residue phenomenon formed when the 2D-3D switchable 2D display device including the switchable 2D-3D optical module provided by this embodiment performs 2D display, and improving the picture quality of 2D display.
Fig. 4 is a schematic diagram of a split structure of the 2D-3D switchable optical module shown in fig. 3. Alternatively, referring to fig. 3 and 4, the lens layer 201 is a plano-convex lens, and the plano-convex lens includes a first plane 211 and a first convex surface 221; the first convex surface 221 faces the light adjusting film 202; the light adjusting film 202 comprises a concave surface 212 and a second plane 222 which are oppositely arranged; the first concave surface 212 faces the lens layer 201, and the first concave surface 212 is complementary to the first convex surface 221. It is to be understood that the lens layer 201 and the light adjusting film 202 in fig. 4 are separated from each other for convenience of describing the structure of the first convex surface 221 and the first concave surface 212.
When the light adjusting film 202 is in the fog state, the light beam incident on the light adjusting film 202 from the second plane 222 can be scattered by the light adjusting film 202 into uniform light beams propagating in different directions, and therefore, the light beam emitted to the lens layer 201 through the first concave surface 212 is still scattered light with a uniform emission angle when emitted from the first plane 211. When the light adjusting film 202 is in a transparent state, the light beam incident on the light adjusting film 202 from the second plane 222 is parallel to the incident direction when the light beam exits from the first concave surface 212, and when the light beam enters the lens layer 201 from the first concave surface 212, the light beam is refracted and converged because the refractive index of the lens layer 201 is different from that of the light adjusting film 202, so that the visual separation is realized, and the 3D display is generated.
Fig. 5 is a schematic structural diagram of another 2D-3D switchable optical module according to an embodiment of the present invention. Optionally, referring to fig. 5, the light modulation film 202 in the 2D-3D switchable optical module provided in this embodiment may also be a plano-convex structure, and the lens layer 201 is a plano-concave structure.
Fig. 6 is a schematic diagram of a split structure of the 2D-3D switchable optical module in fig. 5. Alternatively, referring to fig. 6, the lens layer 201 is a plano-concave mirror, which includes a third plane 241 and a second concave surface 231; the second concave surface 231 faces the side of the light adjusting film 202; the light adjusting film 202 includes a second convex surface 242 and a fourth flat surface 232 which are oppositely arranged; the second convex surface 242 faces the lens layer 201, and the second concave surface 232 is complementary to the second convex surface 242. It is to be understood that the lens layer 201 and the light adjusting film 202 in fig. 6 are separated from each other for convenience of describing the structure of the second convex surface 242 and the second concave surface 231. In comparison with fig. 4, the shape of the light modulation film 202 in fig. 6 is similar to the structure of the light modulation layer 201 in fig. 5, and the shape of the lens layer 201 in fig. 6 is similar to the structure of the light modulation film 202 in fig. 5. Therefore, when the light adjusting film 202 is in the fog state, the light beam incident from the fourth plane 232 of the light adjusting film 202 and finally the light beam emitted from the third plane 241 of the lens layer 201 are scattered light having a uniform emission angle; when the light adjusting film 202 is in a transparent state, the light beam incident from the fourth plane 232 of the light adjusting film 202 can be converged due to the difference between the refractive indexes of the light adjusting film 202 and the lens layer 201 when entering the lens layer 201.
Fig. 7 is a schematic structural diagram of a light modulation film provided in an embodiment of the present invention. Optionally, referring to fig. 7, the light adjusting film includes: a first substrate 301; a second substrate 302; a dimming medium layer 303 located between the first substrate 301 and the second substrate 302; a first electrode 304 is arranged between the dimming medium layer 303 and the first substrate 301; a second electrode 305 is disposed between the dimming medium layer 303 and the second substrate 302. Specifically, the first electrode 304 and the second electrode 305 can form an electric field when being electrified, and the electric field can adjust the state of the dimming medium layer 303, so that the dimming film can realize the switching between the fog state and the transparent state. In this embodiment, the light adjusting film may be directly attached to the lens layer as a separate member.
Fig. 8 is a schematic structural diagram of another 2D-3D switchable optical module according to an embodiment of the present invention. Optionally, referring to fig. 8, the 2D-3D switchable optical module provided in this embodiment further includes a third substrate 401 and a fourth substrate 402; the lens layer 201 is positioned on the side of the fourth substrate 402 facing the third substrate 401; the light adjusting film 202 is located on one side of the lens layer 201 facing the third substrate 401; a third electrode 403 is provided between the light adjusting film 202 and the third substrate 401; a fourth electrode 404 is provided between the lens layer 201 and the second substrate 402. Specifically, the lens layer 201 and the light modulation film 202 in this embodiment are both located between the third electrode 403 and the fourth electrode 404, and when the third electrode 403 and the fourth electrode 404 are powered on, an electric field can be formed, which does not affect the lens layer 201, but can realize that the light modulation film 202 is switched between the fog state and the transparent state. Further, the lens layer 201 and the light adjusting film 202 can share the third substrate 401 and the fourth substrate 402.
Optionally, the 2D-3D switchable optical module provided in this embodiment further includes an adhesion layer, and the adhesion layer may be located on a side of the lens layer 201 away from the light modulation film 202. In general, the lens layer 201 is a lens array composed of a plurality of lenses, and the plurality of lenses may be attached to the attachment layer when forming the 2D-3D switchable optical module. When the 2D-3D switchable optical module provided in this embodiment is used to manufacture a 2D-3D switchable display device, the adhesion layer may also be used to attach the 2D-3D switchable optical module to a display panel.
Optionally, the light modulating film comprises a polymer dispersed liquid crystal. Specifically, a Polymer Dispersed Liquid Crystal (PDLC) is also called a liquid crystal light modulation film, and is a film material with excellent comprehensive performance formed by polymerizing liquid crystal and polymer. And (3) placing the mixed low-molecular liquid crystal and prepolymer phase under certain reaction conditions for polymerization reaction, wherein the prepolymer can form a high-molecular network structure, and liquid crystal molecules are uniformly distributed in the high-molecular network, so that a liquid crystal light adjusting film is formed.
Optionally, the light-adjusting film exhibits a fog state upon application of an external electric field; when the external electric field is removed, the light adjusting film is in a transparent state; or, when an external electric field is applied, the light adjusting film is in a transparent state; when the external electric field is cancelled, the light adjusting film is in a fog state. Specifically, the light adjusting film generally includes two different types, one is that the long axis direction of the liquid crystal molecules in the polymer dispersed liquid crystal can be any direction in the absence of an applied electric field, and at this time, the light adjusting film assumes a fog state, and if a certain electric field is applied to the light adjusting film, the long axis direction of all (90% or more) of the liquid crystal molecules can be made to be the same direction, and at this time, the light adjusting film assumes a transparent state. The other is that the long axis directions of all the liquid crystal molecules are consistent when no external electric field exists, the light adjusting film is in a transparent state, and the long axis directions of the liquid crystal molecules are in any directions under the action of the external electric field, and the light adjusting film is in a fog state.
Based on the same inventive concept, the embodiment of the invention also provides a 2D-3D switchable display device. Fig. 9 is a schematic structural diagram of a 2D-3D switchable display device according to an embodiment of the present invention. Specifically, referring to fig. 9, the display device includes a backlight module 204, a display panel 205, and the 2D-3D switchable optical module 206 according to any of the embodiments described above; the 2D-3D switchable optical module 206 is located between the backlight module 204 and the display panel 205; the backlight module 204 is used for providing a background light beam, and the background light beam irradiates the display panel 205 after passing through the 2D-3D switchable optical module 206; when the light adjusting film 202 is in a fog state, the 2D-3D switchable display device performs 2D display; when the light adjusting film 202 is in a transparent state, the 2D-3D switchable display device performs 3D display.
The switchable optical display device of 2D-3D that this embodiment provided, including the switchable optical module of 2D-3D who has membrane of adjusting luminance and lens layer, and the membrane of adjusting luminance has fog attitude and transparent state, when the membrane of adjusting luminance is fog attitude, the light beam of following the switchable optical module of this 2D-3D outgoing is the even scattered light of emergence angle, consequently, through the state of adjusting the membrane of adjusting luminance being fog attitude, when can making the light beam that gets into the membrane of adjusting luminance emergent from the membrane of adjusting luminance, the emergence angle of emergent light beam can evenly distributed to avoid the lens residue phenomenon of 2D demonstration, improve the changeable optical display device's of 2D-3D 2D display effect.
It should be noted that fig. 9 exemplarily sets the lens layer 201 on the side of the 2D-3D switchable optical module 206 close to the display panel 205, but in practice, the lens layer 201 and the display panel 205 may have other relative position relationships, and this embodiment does not specifically limit this. For example, the lens layer 201 can be disposed on a side of the 2D-3D switchable optical module 206 away from the display panel 205, and the light adjusting film 202 can be disposed on a side of the 2D-3D switchable optical module 206 close to the display panel 205.
optionally, referring to fig. 10, the backlight module is a directional light source, and an included angle between a light beam emitted by the backlight module and a direction perpendicular to a plane of a light emitting surface of the backlight module is smaller than a preset angle, specifically, a straight line 501 is perpendicular to the light emitting surface of the backlight module 204, and a light ray 502 is any light ray emitted from the light emitting surface of the backlight module, wherein an included angle between the straight line 502 and the light ray 501 is α, the smaller the included angle between the straight line 501 and the light ray 502 is, the higher the probability that the light ray 502 penetrates through the 2D-3D switchable optical module 206 and the display panel 205 is, the higher the display brightness of the 2D-3D switchable optical display device is, and therefore, the backlight module can be set as the directional light source to ensure the display brightness of the 2D-3D switchable optical display device in 3D.
optionally, the preset angle is less than or equal to 15 °, specifically, if the value of the preset angle is less than or equal to 15 °, the value of α is also less than or equal to 15 °, the probability that the light beam emitted from the backlight module reaches the display panel is relatively high, and the display brightness of the 2D-3D switchable optical display device is relatively high.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A 2D-3D switchable optical module, comprising:
the light adjusting film comprises a lens layer and a light adjusting film positioned on one side of the lens layer;
the light adjusting film comprises a mist state and a transparent state; when the light adjusting film is in a fog state, light beams emitted by the light adjusting film are scattered light which is uniformly distributed at each emission angle; when the light adjusting film is in a transparent state, the transmission direction of a light beam emitted by the light adjusting film is the same as the transmission direction of an incident light beam incident to the light adjusting film; the refractive index of the lens layer is different from the refractive index of the light adjusting film in a transparent state.
2. The 2D-3D switchable optical module of claim 1 wherein the light modulating film comprises:
a first substrate;
a second substrate;
the light modulation medium layer is positioned between the first substrate and the second substrate;
a first electrode is arranged between the dimming medium layer and the first substrate; and a second electrode is arranged between the dimming medium layer and the second substrate.
3. The 2D-3D switchable optical module of claim 1 further comprising a third substrate and a fourth substrate;
the lens layer is positioned on one side of the fourth substrate facing the third substrate;
the light adjusting film is positioned on one side of the lens layer facing the third substrate;
a third electrode is arranged between the light modulation film and the third substrate; a fourth pole is disposed between the lens layer and the fourth substrate.
4. The 2D-3D switchable optical module of claim 1 wherein the lens layer is a plano-convex mirror comprising a first plane and a first convex surface; the first convex surface faces one side of the light adjusting film; the light adjusting film comprises a first concave surface and a second plane which are oppositely arranged; the first concave surface faces one side of the lens layer, and the first concave surface is matched and complemented with the first convex surface.
5. The 2D-3D switchable optical module of claim 1 wherein the lens layer is a plano-concave mirror comprising a third planar surface and a second concave surface; the second concave surface faces one side of the light adjusting film; the light adjusting film comprises a second convex surface and a fourth plane which are oppositely arranged; the second convex surface faces one side of the lens layer, and the second concave surface is embedded and complemented with the second convex surface.
6. The 2D-3D switchable optical module of claim 1 wherein the light modulating film comprises polymer dispersed liquid crystal.
7. The 2D-3D switchable optical module of claim 1 wherein the light modulating film exhibits a haze state upon application of an external electric field; when an external electric field is cancelled, the light adjusting film is in a transparent state;
or,
when an external electric field is applied, the light adjusting film is in a transparent state; when the external electric field is removed, the light adjusting film is in a fog state.
8. A 2D-3D switchable display device, comprising a backlight module, a display panel and the 2D-3D switchable optical module of any one of claims 1 to 7;
wherein the 2D-3D switchable optical module is positioned between the backlight module and the display panel; the backlight module is used for providing a background light beam, and the background light beam irradiates the display panel after passing through the 2D-3D switchable optical module;
when the light adjusting film is in a fog state, the 2D-3D switchable display device performs 2D display; when the light adjusting film is in a transparent state, the 2D-3D switchable display device performs 3D display.
9. The 2D-3D switchable display device of claim 8, wherein the backlight module is a directional light source;
an included angle between a light beam emitted by the backlight module and a direction perpendicular to a plane where a light emitting surface of the backlight module is located is smaller than a preset angle.
10. The 2D-3D switchable display device of claim 9, wherein the preset angle is less than or equal to 15 °.
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