CN114660846B - Liquid crystal display device, head-up display device and vehicle - Google Patents
Liquid crystal display device, head-up display device and vehicle Download PDFInfo
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- CN114660846B CN114660846B CN202210214887.9A CN202210214887A CN114660846B CN 114660846 B CN114660846 B CN 114660846B CN 202210214887 A CN202210214887 A CN 202210214887A CN 114660846 B CN114660846 B CN 114660846B
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Classifications
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133553—Reflecting elements
-
- 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
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
-
- 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
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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
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
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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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- G02F1/133512—Light shielding layers, e.g. black matrix
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- 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
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- 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
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- G—PHYSICS
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- 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
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- 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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- 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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
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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
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/136209—Light shielding layers, e.g. black matrix, incorporated in the active matrix substrate, e.g. structurally associated with the switching element
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Liquid Crystal (AREA)
Abstract
The invention discloses a liquid crystal display device, a head-up display device and a vehicle, wherein the liquid crystal display device comprises a substrate, a reflecting layer, a transmission layer, a plurality of first thin film transistors, a plurality of first pixel electrodes and a shading layer, the reflecting layer is arranged on the substrate and used for reflecting light rays emitted by the light emitting device, the transmission layer is arranged on the substrate and is spaced from the reflecting layer, the plurality of first thin film transistors are arranged on the substrate and are positioned between the reflecting layer and the transmission layer, the first pixel electrodes are arranged on the substrate and are positioned between the substrate and the transmission layer, the plurality of first pixel electrodes are respectively and electrically connected with the plurality of first thin film transistors in a one-to-one correspondence manner, and the shading layer is arranged corresponding to the first thin film transistors and is positioned on one side, far away from the substrate, of the first thin film transistors. The liquid crystal display device provided by the invention can enable the head-up display device to project images with different depth of field and different magnification, reduce the number of devices in the head-up display device, and reduce the overall tolerance and cost of the head-up display device.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a liquid crystal display device, a head-up display device, and a vehicle.
Background
A Head Up Display (HUD) is a comprehensive electronic Display device commonly used in vehicles such as vehicles or airplanes. The head-up display device can project information such as the current speed of the vehicle or the navigation route and the like onto the windshield glass to form an image, so that a driver can see navigation or vehicle speed information without turning or lowering the head in the driving process. In the related art, in order to project two images with different depths of field and different magnifications on a windshield, it is generally necessary to design multiple sets of head-up display devices with different magnifications, or add multiple devices to the head-up display devices to change the optical path, which not only makes the optical path design more complicated, but also easily increases the overall tolerance of the head-up display device due to excessive devices used, and also increases the cost of the head-up display device.
Disclosure of Invention
The embodiment of the invention discloses a liquid crystal display device, a head-up display device and a vehicle, which can enable the head-up display device to project images with different depth of field and different magnification, reduce the number of devices in the head-up display device and reduce the overall tolerance and cost of the head-up display device.
In order to achieve the above object, in a first aspect, the present invention discloses a liquid crystal display device applied to a head-up display apparatus including a light emitting device, characterized in that the liquid crystal display device includes:
a substrate;
the reflecting layer is arranged on the substrate and is used for reflecting light rays emitted by the light-emitting device;
the transmission layer is arranged on the substrate and is spaced from the reflection layer;
a plurality of first thin film transistors disposed on the substrate and between the reflective layer and the transmissive layer;
the first pixel electrodes are arranged on the substrate and positioned between the substrate and the transmission layer, and are respectively and electrically connected with the first thin film transistors in a one-to-one correspondence manner; and
the shading layer is arranged corresponding to the first thin film transistor and is positioned on one side, far away from the substrate, of the first thin film transistor.
When the liquid crystal display device is applied to a head-up display device, the liquid crystal display device is arranged on the light emitting side of the light emitting device, a part of light emitted by the light emitting device can irradiate the reflecting layer and is reflected to the imaging component through the reflecting layer to form a first virtual image, the other part of the light penetrates the transmitting layer and the substrate to the other side of the liquid crystal display device, and the light is projected to the imaging component to form a second virtual image after being reflected again through the first reflecting mirror. And a plurality of first thin film transistors are arranged between the reflecting layer and the transmitting layer of the liquid crystal display device, so that the space of the first thin film transistors corresponding to the transmitting layer on the substrate can be reduced, the settable area of the first pixel electrode is increased, the size of an opening of the first pixel electrode can be increased, the aperture opening ratio is improved, the light transmittance of the liquid crystal display device is improved, the display brightness of the liquid crystal display device is improved, the brightness of the light emitting device can be properly reduced, the power consumption is reduced, and meanwhile, the light shielding layer is arranged on one side of the first thin film transistors far away from the substrate, which is used for preventing light from irradiating the substrate, from penetrating to the other side of the substrate, and interfering the light transmitted by the transmitting layer of the liquid crystal display device, so that the normal display of the liquid crystal display device is affected.
In an embodiment of the first aspect of the present invention, the liquid crystal display device further includes a second pixel electrode, a second thin film transistor, a first liquid crystal layer, and a first polarizer, where the second pixel electrode and the second thin film transistor are disposed on the substrate and between the substrate and the reflective layer, the second pixel electrode is electrically connected to the second thin film transistor, the first liquid crystal layer is disposed on a side of the reflective layer away from the second pixel electrode and the second thin film transistor, and the first polarizer is disposed on a side of the first liquid crystal layer away from the reflective layer. The external unpolarized light passes through the first polaroid and then is converted into linearly polarized light, when the second thin film transistor transmits voltage to the second pixel electrode, voltage difference can be formed between the second thin film transistor and the common electrode, so that an electric field is generated to control the arrangement of liquid crystal molecules of the first liquid crystal layer to change, the polarization angle of the linearly polarized light can be changed, then the linearly polarized light is transmitted to the reflecting layer and reflected by the reflecting layer, the linearly polarized light can penetrate through the first polaroid to the outside of the liquid crystal display device after the polarization angle of the linearly polarized light is changed again through the first liquid crystal layer, and when the second pixel electrode is not electrically connected with the second thin film transistor, the arrangement of the liquid crystal molecules of the first liquid crystal layer is not changed, so that the polarization angle of the linearly polarized light cannot be changed by the first liquid crystal layer, and light reflected by the reflecting layer cannot penetrate through the first polaroid. Therefore, the light emitted from the liquid crystal display device after being reflected by the liquid crystal display device can be controlled by controlling the on-off state of the second thin film transistor and the second pixel electrode, so that a specific pattern is displayed on the liquid crystal display device.
As an alternative embodiment, in an embodiment of the first aspect of the present invention, the liquid crystal display device further includes a phase difference film disposed between the first liquid crystal layer and the first polarizer. By providing the retardation film, the polarization state of light can be corrected, and the display quality of the liquid crystal display device can be improved.
In an embodiment of the first aspect of the present invention, the liquid crystal display device further includes a color film substrate, where the color film substrate is disposed on a side of the transmissive layer and the first liquid crystal layer away from the first pixel electrode, and the light shielding layer is disposed on a side of the color film substrate away from the color film substrate. The color film substrate can select the light wave band passing through, so that the passing light can present a specific color, and the liquid crystal display device can display a color picture due to the arrangement of the color film substrate.
In an alternative embodiment, in an embodiment of the first aspect of the present invention, the light shielding layer is disposed in a manner of being attached to the first thin film transistor or spaced from the first thin film transistor. Therefore, the first thin film transistor can be directly connected to the light shielding layer or arranged at intervals with the light shielding layer, and the first thin film transistor can be arranged between the reflecting layer and the transmitting layer as long as the light shielding layer is arranged corresponding to the first thin film transistor, so that the settable area of the first pixel electrode is increased, the aperture ratio of the pixel corresponding to the transmitting layer is increased, and the light transmittance of the liquid crystal display device is improved.
In a second aspect, the present invention discloses a head-up display device, including:
a light emitting device;
the liquid crystal display device according to the first aspect, wherein the display device is disposed on a light emitting side of the light emitting device;
the first reflector is arranged on one side of the liquid crystal display device, which is far away from the light emitting device, and is used for reflecting the light transmitted through the transmission layer; and
the second reflector is arranged on one side, far away from the first reflector, of the liquid crystal display device, and is used for reflecting the light reflected by the first reflector to the imaging component to form a first virtual image, and is used for reflecting the light reflected by the reflecting layer to the imaging component to form a second virtual image. By arranging the first reflecting mirror and the second reflecting mirror, the optical path of part of light rays can be prolonged, so that a first virtual image and a second virtual image with different depth of field and magnification are formed on the imaging component. Meanwhile, the liquid crystal display device of the first aspect is adopted in the head-up display device, so that the aperture ratio of pixels can be increased, the light transmittance is improved, the brightness of the light emitting device can be properly reduced, and the power consumption of the head-up display device is reduced.
In an embodiment of the second aspect of the present invention, the first mirror is a planar mirror, and the second mirror is a curved mirror, so as to facilitate converging light reflected by the first mirror and a reflective layer of the liquid crystal display device, and improve brightness of a first virtual image and a second virtual image formed on the imaging component.
As an alternative implementation manner, in an embodiment of the second aspect of the present invention, the head-up display device further includes a motor unit, where the motor unit is electrically connected to the second mirror, and the motor unit is used to drive the second mirror to move so as to change a position of the second mirror. The motor unit can control the second reflector to move, so that the light reflected by the first reflector and the light reflected by the reflecting layer are transmitted to different positions of the second reflector, the reflecting route of the light reflected by the second reflector is changed, and the positions of the first virtual image and the second virtual image on the imaging component are adjusted.
In a third aspect, the present invention discloses a vehicle, the vehicle including a vehicle body and the head-up display device according to the second aspect, the vehicle body having the imaging part, the head-up display device being provided on the vehicle body to project onto the imaging part for imaging. The vehicle with the head-up display device of the second aspect can project the first virtual image and the second virtual image with different magnifications and different depths of field on the imaging component of the vehicle body, and simultaneously increase the aperture ratio of the pixels of the liquid crystal display device and improve the light transmittance of the liquid crystal display device.
As an alternative embodiment, in an example of the third aspect of the invention, the imaging member is a wedge-shaped windscreen. Through the wedge windshield with first virtual image and second virtual image transmission in the vehicle, need not to set up imaging unit in addition, reduce cost, owing to wedge windshield simultaneously, form certain angle between two reflecting surfaces along its thickness direction, can avoid first virtual image and second virtual image to exist the condition of ghost image respectively.
Compared with the prior art, the invention has the beneficial effects that:
when the liquid crystal display device is applied to the head-up display device, the liquid crystal display device is arranged on the light emitting side of the light emitting device, so that part of light emitted by the light emitting device can irradiate the reflecting layer and be reflected to the imaging component through the reflecting layer to form a first virtual image, the other part of the light penetrates the transmitting layer and the substrate to the other side of the liquid crystal display device and is reflected by the first reflecting mirror again to be projected to the imaging component to form a second virtual image, and the depth of field and the magnification of the first virtual image and the second virtual image are different, namely, two images with different depth of field and different magnification are projected on the imaging component through the cooperation of the liquid crystal display device and the first reflecting mirror.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments 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 other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a liquid crystal display device according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of the liquid crystal display device of FIG. 1 taken along line A-A;
fig. 3 is a schematic diagram of a structure of a substrate, a first pixel electrode, a first thin film transistor, a second pixel electrode, and a second thin film transistor according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a first pixel electrode, a first thin film transistor, a second pixel electrode, and a second thin film transistor according to an embodiment of the present invention;
FIG. 5 is an enlarged view at B of FIG. 4;
FIG. 6 is an enlarged view at C of FIG. 4;
fig. 7 is a schematic structural diagram of a head-up display device according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a vehicle according to an embodiment of the present invention.
Icon: 1. a substrate; 2. a reflective layer; 3. a transmissive layer; 4. a light shielding layer; 5. a first thin film transistor; 6. a first pixel electrode; 7. a data line; 8. a scanning line; 9. a second polarizer; 10. a third polarizer; 11. a color film substrate; 12. a second pixel electrode; 13. a second thin film transistor; 14. a first liquid crystal layer; 15. a first polarizer; 16. a phase difference film; 51. a first gate; 52. a first source electrode; 53. a first drain electrode; 131. a second gate; 132. a second source electrode; 133. a second drain electrode; 100. a liquid crystal display device; 200. a head-up display device; 201. a light emitting device; 202. a first mirror; 203. a second mirror; 204. a motor unit; 300. a vehicle; 301. a vehicle body; 3010. an imaging member.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the present invention, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are only used to better describe the present invention and its embodiments and are not intended to limit the scope of the indicated devices, elements or components to the particular orientations or to configure and operate in the particular orientations.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in the present invention will be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
Referring to fig. 1 to 3, the first pixel electrode, the first thin film transistor, the second pixel electrode, and the second thin film transistor are not shown in fig. 1 and 2. The embodiment of the invention discloses a liquid crystal display device 100, which can be applied to a head-up display device, and the head-up display device can comprise a light emitting device. The liquid crystal display device 100 includes a substrate 1, a reflective layer 2, a transmissive layer 3, a light shielding layer 4, a plurality of first thin film transistors 5, and a plurality of first pixel electrodes 6. The reflective layer 2 is disposed on the substrate 1, and the reflective layer 2 is used for reflecting light emitted by the light emitting device. The transmissive layer 3 is disposed on the substrate 1 and spaced apart from the reflective layer 2. The first thin film transistors 5 are disposed between the reflective layer 2 and the transmissive layer 3 on the substrate 1. The first pixel electrodes 6 are disposed on the substrate 1 and between the substrate 1 and the transmissive layer 3, and the first pixel electrodes 6 are respectively and electrically connected to the first thin film transistors 5 in a one-to-one correspondence manner. The light shielding layer 4 is disposed corresponding to the first thin film transistor 5 and is located at a side of the first thin film transistor 5 away from the substrate 1.
Illustratively, the substrate 1 may employ glass having light transmitting properties. The transmissive layer 3 may be a liquid crystal layer, the reflective layer 2 may be made of copper, silver or gold, and the reflective layer 2 and the transmissive layer 3 are disposed on the same side of the substrate 1.
Alternatively, the substrate 1 of the liquid crystal display device 100 may be divided into three regions including a reflective region 1a corresponding to the reflective layer 2, a transmissive region 1b corresponding to the transmissive layer 3, and a blocking region 1c between the reflective region 1a and the transmissive region 1 b. The electrodes in the transmission area 1b of the substrate 1 are the first pixel electrodes 6, and the first thin film transistors 5 electrically connected to the first pixel electrodes 6 are located in the isolation area 1c.
When the liquid crystal display device 100 is applied to a head-up display apparatus, the light emitting device is disposed on a side of the reflective layer 2 away from the substrate 1, and light emitted from the light emitting device can be irradiated to the reflective layer 2 and the transmissive layer 3. After the light emitted by the light emitting device is transmitted to the reflective layer 2, the light is directly reflected by the reflective layer 2, and does not penetrate the substrate 1. After the light emitted from the light emitting device is transmitted to the transmissive layer 3, the light passes through the transmissive layer 3, the first pixel electrode 6 and the transmissive region 1b of the substrate 1 in sequence, and finally exits to the outside of the liquid crystal display device 100. And the first thin film transistor 5 disposed between the transmissive layer 3 and the reflective layer 2 does not participate in reflection of light or transmission of light. Therefore, the light irradiated toward the liquid crystal display device 100 is mainly divided into two parts, one part is reflected to the imaging part by the reflective layer 2 of the liquid crystal display device 100 to form a first virtual image, and the other part can be irradiated to the first reflecting mirror positioned at one side of the liquid crystal display device 100 far away from the light emitting device after penetrating the transmissive layer 3 and the substrate 1, and reflected to the imaging part by the first reflecting mirror to form a second virtual image.
It should be noted that, the aperture ratio, that is, the ratio between the portion of each pixel through which the light can pass and the whole area of each pixel, and in this embodiment, the first thin film transistor 5 is disposed between the reflective layer 2 and the transmissive layer 3 of the liquid crystal display device 100, so that the first thin film transistor 5 does not occupy the space corresponding to the transmissive layer 3 on the substrate 1, so that the settable area of the first pixel electrode 6 can be increased, so that the aperture of the first pixel electrode 6 is increased, that is, the portion of the pixel through which the light can pass is increased, thereby increasing the aperture ratio of the pixel corresponding to the transmissive layer 3, improving the light transmittance of the liquid crystal display device 100, improving the display brightness of the liquid crystal display device 100, and further properly reducing the brightness of the light emitting device and reducing the power consumption. Then, by disposing the light shielding layer 4 on the side of the first thin film transistor 5 away from the substrate 1, light is prevented from penetrating to the other side of the substrate 1 after being irradiated to the position on the substrate 1 where the first thin film transistor 5 is disposed, and light transmitted through the transmission layer 3 of the liquid crystal display device is disturbed, so that normal display of the liquid crystal display device is prevented from being affected.
It is known that, in order to achieve the function of transmitting light of the liquid crystal display device 100, the liquid crystal display device 100 generally includes a second polarizer 9 and a third polarizer 10, wherein the second polarizer 9 is disposed on a side of the transmissive layer 3 away from the first pixel electrode 6, and the third polarizer 10 is disposed on a side of the substrate 1 away from the first pixel electrode 6. Wherein, the barriers of the second polarizer 9 and the third polarizer 10 may be perpendicular to each other, so that when unpolarized light enters the liquid crystal display device 100 from one side of the second polarizer 9 of the liquid crystal display device 100, the unpolarized light can be converted into linearly polarized light, and when the first thin film transistor 5 is applied with a high voltage, the first thin film transistor 5 can conduct the voltage to the first pixel electrode 6 to generate an electric field, so that the liquid crystal molecules in the transmission layer 3 rotate, and the polarization direction of the linearly polarized light is changed, so that the vibration direction of the linearly polarized light is parallel to the barrier of the third polarizer 10, and the linearly polarized light can pass through the third polarizer 10 to realize light transmission; when the first thin film transistor 5 is not applied with a high voltage, the voltage cannot be conducted to the first pixel electrode 6, the arrangement of the liquid crystal molecules of the transmissive layer 3 is not changed, the linear polarized light entering the transmissive layer 3 still maintains the original polarization direction, however, the original polarization direction of the linear polarized light is perpendicular to the barrier direction of the third polarizer 10, that is, the linear polarized light cannot exit from the third polarizer 10 to the outside of the liquid crystal display device 100. Therefore, by controlling the power-on condition of the first thin film transistor 5 of the liquid crystal display device 100, a specific area of the liquid crystal display device 100 allows light to penetrate, and the light forms a specific pattern, thereby displaying a picture.
In some embodiments, the liquid crystal display device 100 further includes a second pixel electrode 12, a second thin film transistor 13, a first liquid crystal layer 14, and a first polarizer 15, where the second pixel electrode 12 and the second thin film transistor 13 are disposed on the substrate 1 and between the substrate 1 and the reflective layer 2, the second pixel electrode 12 is electrically connected to the second thin film transistor 13, the first liquid crystal layer 14 is disposed on a side of the reflective layer 2 away from the second pixel electrode 12 and the second thin film transistor 13, and the first polarizer 15 is disposed on a side of the first liquid crystal layer 14 away from the reflective layer 2. The unpolarized light emitted from the light emitting device can be converted into linearly polarized light after passing through the first polarizer 15, and when the second thin film transistor 13 transmits a voltage to the second pixel electrode 12, an electric field for controlling the liquid crystal molecules of the first liquid crystal layer 14 to rotate can be generated, so that the polarization angle of the linearly polarized light is changed, then the linearly polarized light is transmitted to the reflective layer 2 and then reflected by the reflective layer 2, after passing through the first liquid crystal layer 14 again to change the polarization angle, the unpolarized light can penetrate through the first polarizer 15 to the outside of the liquid crystal display device 100, and when the second pixel electrode 12 does not receive a voltage from the second thin film transistor 13, the arrangement of the liquid crystal molecules of the first liquid crystal layer 14 is not changed, so that the polarization angle of the linearly polarized light cannot be changed by the first liquid crystal layer 14, and the light reflected by the reflective layer 2 cannot penetrate through the first polarizer 15. Therefore, the second thin film transistor 13 can control the light emitted from the liquid crystal display device 100 after being reflected by the liquid crystal display device 100, thereby displaying a specific pattern on the liquid crystal display device 100.
In some embodiments, the liquid crystal display device 100 further includes a color film substrate 11, where the color film substrate 11 is disposed on a side of the transmissive layer 3 and the first liquid crystal layer 14 away from the first pixel electrode 6. It will be appreciated that a portion of the light can pass through the second polarizer 9 and the color film substrate 11 in sequence to the transmissive layer 3, and a portion of the light can pass through the first polarizer 15 and the color film substrate 11 in sequence to the first liquid crystal layer 14. Since the color film substrate 11 can select the light wavelength band passing through, the passing light can be made to take on a specific color, and thus the arrangement of the color film substrate 11 can make the liquid crystal display device 100 display a color picture.
Further, the liquid crystal display device 100 further includes a phase difference film 16, and the phase difference film 16 may be disposed between the first polarizer 15 and the first liquid crystal layer 14. As shown in fig. 2, in the present embodiment, the retardation film 16 is located between the color film substrate 11 and the first polarizer 15. Specifically, the phase difference film 16 may be a quarter lambda phase difference film, where lambda is the wavelength of the light beam. By providing the retardation film 16, the first polarizer 15 can be a circular polarizer or an elliptical polarizer, which corrects the polarization state of light and improves the display quality of the liquid crystal display device 100.
As an alternative embodiment, the light shielding layer 4 is provided at a distance from the first thin film transistor 5. Specifically, as shown in fig. 2, the light shielding layer 4 may be disposed on a side of the color film substrate 11 away from the substrate 1.
As another alternative embodiment, the light shielding layer 4 is provided so as to be attached to the first thin film transistor 5. For example, the light shielding layer 4 may be located between the color film substrate 11 and the substrate 1, and the light shielding layer 4 may be connected to the reflective layer 2 at one end and the transmissive layer 3 at the other end.
Accordingly, the first thin film transistor 5 may be directly connected to the light shielding layer 4 or may be disposed at a distance from the light shielding layer 4, and the first thin film transistor 5 may be disposed between the reflective layer 2 and the transmissive layer 3 by disposing the light shielding layer 4 corresponding to the first thin film transistor 5, so as to increase the settable area of the first pixel electrode 6, increase the aperture ratio of the pixel corresponding to the transmissive layer 3, and improve the light transmittance of the liquid crystal display device 100.
Further, the light shielding layer 4 may be made of black aluminum foil, black cardboard, or other materials having light shielding properties. If the light irradiates the blocking area 1c of the substrate 1, penetrates the substrate 1 and is transmitted to the side of the liquid crystal display device 100 away from the light emitting device, so that light leakage occurs in the liquid crystal display device 100, that is, the light penetrating through the blocking area 1c interferes with the light penetrating through the transmitting area 1b of the substrate 1, so that the light shielding layer 4 needs to be disposed corresponding to the first thin film transistor 5, and blocks the light from irradiating the blocking area 1c of the substrate 1, thereby ensuring the display effect of the liquid crystal display device 100.
Referring to fig. 3 to 5, the number of the first thin film transistors 5 is plural, and the number of the first pixel electrodes 6 corresponds to the number of the first thin film transistors 5, so that any one of the first thin film transistors 5 can be electrically connected to a uniquely determined one of the first pixel electrodes 6. The first thin film transistor 5 may have a first gate electrode 51, a first source electrode 52, and a first drain electrode 53, wherein the first source electrode 52 and the first gate electrode 51 are electrically connected to an external circuit, and the first drain electrode 53 is electrically connected to the first pixel electrode 6. When the external circuit applies a high voltage to the first gate electrode 51, the first source electrode 52 of the first thin film transistor 5 can transfer an external voltage to the first drain electrode 53, and the first drain electrode 53 transmits the voltage to the first pixel electrode 6, so that an electric field can be generated to control the liquid crystal molecules of the transmissive layer 3 on the first pixel electrode 6 to rotate, and change the polarization direction of light, so that light can be transmitted to the outside of the liquid crystal display device 100.
Specifically, the first pixel electrode 6 and the first thin film transistor 5 may be disposed on the substrate 1 in an array. For example, in a first direction (as shown by an X direction in fig. 4) along the direction from the transmissive layer 3 to the reflective layer 2, a direction perpendicular to the first direction is set to a second direction (as shown by a Y direction in fig. 4), and n×m first pixel electrodes 6 are aligned along the first direction and the second direction, and an interval is formed between two adjacent first pixel electrodes 6. The substrate 1 of the liquid crystal display device 100 is further provided with n+1 data lines 7, and the n+1 data lines 7 are alternately arranged with the n first pixel electrodes 6 along the second direction. M scan lines 8 and n×m first tfts 5 are disposed in the isolation region 1c of the substrate 1, and n+1 data lines 7 extend to the isolation region 1c of the substrate 1 along the first direction, where the scan lines 8 may be disposed perpendicular to the n+1 data lines 7. In the first direction, the number of the first thin film transistors 5 is m, the m first thin film transistors 5 are arranged at intervals, the first gate electrode 51 of the first thin film transistor 5 is connected with the adjacent one of the scanning lines 8, the first drain electrode 53 of the first thin film transistor 5 is connected with the adjacent one of the data lines 7, and the first drain electrode 53 of the first thin film transistor 5 extends to the corresponding first pixel electrode 6 along the first direction X and is connected with the first pixel electrode 6. It is understood that the scan line 8 and the data line 7 connect the first thin film transistor 5 and an external circuit.
In the related art, a plurality of scan lines 8 are disposed at intervals along a first direction X, a plurality of data lines 7 are disposed at intervals along a second direction Y, the plurality of scan lines 8 are perpendicular to the plurality of data lines 7, the plurality of scan lines 8 and the plurality of data lines 7 divide the position of the substrate 1 corresponding to the transmissive layer 3 into a plurality of square areas, a first pixel electrode 6 and a first thin film transistor 5 are disposed in any square area, a first source 52 of the first thin film transistor 5 is connected to an adjacent one of the data lines 7, a first gate 51 is connected to an adjacent one of the scan lines 8, and a first drain 53 is connected to the first pixel electrode 6 in the same square area. In the related art, the first thin film transistor 5 and the data line 7 connected to the first thin film transistor 5 are disposed in the isolation region 1c of the substrate 1, which is beneficial to improving the aperture ratio of the pixel corresponding to the transmissive layer 3.
Specifically, as shown in connection with fig. 6, the second thin film transistor 13 may have a second gate electrode 131, a second source electrode 132, and a second drain electrode 133, wherein the second source electrode 132 and the second gate electrode 131 are used to be electrically connected to an external circuit, and the second drain electrode 133 is electrically connected to the second pixel electrode 12. When the external circuit applies a high voltage to the second gate electrode 131, the second source electrode 132 of the second thin film transistor 13 can transmit the voltage to the second drain electrode 133, and then enter the second pixel electrode 12 to generate an electric field, so as to control the liquid crystal molecules of the first liquid crystal layer 14 on the second pixel electrode 12 to rotate, and change the polarization direction of the light.
For example, the n+1 data lines 7 may extend to the position corresponding to the reflective layer 2 on the substrate 1 along the first direction, m scan lines 8 and n×m first thin film transistors 5 are disposed at the position corresponding to the reflective layer 2 on the substrate 1, the m scan lines 8 are perpendicular to the n+1 data lines 7, the plurality of scan lines 8 and the plurality of data lines 7 divide the position corresponding to the reflective layer on the substrate 1 into a plurality of square regions, a second thin film transistor 13 and a second pixel electrode 12 are disposed in any square region, the second gate 131 of the second thin film transistor 13 is connected to an adjacent one of the scan lines 8, the second source 132 is connected to an adjacent one of the data lines 7, and the second drain 133 is connected to the second pixel electrode 12 located in the same square region, so that when the scan lines apply a high voltage to the second gate 131, the second drain 133 transfers the voltage transferred from the data lines to the second source 132 to the second pixel electrode 12.
Referring to fig. 7, a head-up display apparatus 200 is disclosed in a second aspect of the present invention, and the head-up display apparatus 200 includes a light emitting device 201, a first mirror 202, a second mirror 203, and a liquid crystal display device 100 as described above. The light emitting device 201 of the liquid crystal display device 100 is disposed on the light emitting side of the light emitting device 201. And the first reflecting mirror 202 is provided at a side of the liquid crystal display device 100 remote from the light emitting device 201, for reflecting the light transmitted through the transmissive layer 3. The second mirror 203 is disposed on a side of the liquid crystal display device 100 away from the first mirror 202, and is configured to reflect the light reflected by the first mirror 202 to the imaging part to form a first virtual image, and to reflect the light reflected by the reflective layer 2 to the imaging part to form a second virtual image.
It can be understood that the light emitting device 201 can emit light to the liquid crystal display device 100, and the light irradiates the reflective layer 2 of the liquid crystal display device 100, then is reflected by the reflective layer 2 to the second mirror 203, and then is reflected by the second mirror 203 to the imaging component to form a first virtual image. The light emitted by the light emitting device 201 irradiates the transmissive layer 3 of the liquid crystal display device 100 and then can be transmitted to the first mirror 202, and the light transmitted by the transmissive layer 3 is reflected to the second mirror 203 by the first mirror 202, so as to form a second virtual image by being reflected by the second mirror 203 onto the imaging component.
Since the light is transmitted by the transmission layer 3 and then reflected to the second reflecting mirror 203 after being transmitted for a certain distance, the optical path length of the light forming the first virtual image is longer than that of the light forming the second virtual image, so that the depth of field of the first virtual image and the second virtual image formed on the imaging component is different, and the magnification is also different. The first virtual image is a long-view virtual image, and the second virtual image is a short-view virtual image.
The head-up display device 200 provided by the embodiment of the invention can project two images with different depth of field and different magnification on the imaging component, meanwhile, since the head-up display device 200 is provided with the liquid crystal display device 100, the head-up display device 200 also has all the technical effects of the liquid crystal display device 100, namely, the aperture ratio of the liquid crystal display device 100 can be increased, the light transmittance of the liquid crystal display device 100 is improved, the brightness of the light emitting device 201 is properly reduced, and the cost is saved.
In some embodiments, the first mirror 202 is a planar mirror, and the second mirror 203 is a curved mirror, so that the first mirror 202 is beneficial to reflect the light transmitted by the transmission layer 3 to the second mirror 203, and then the second mirror 203 can collect the light reflected by the first mirror 202 and the light reflected by the reflection layer 2 and reflect the light to the imaging component, so as to improve the imaging brightness of the first virtual image and the second virtual image formed on the imaging component.
Specifically, each of the first mirror 202 and the second mirror 203 may include a substrate and a metal layer disposed on the substrate to reflect light through the metal layer, wherein the substrate may be made of glass or a polymer (such as plastic). Of course, in other embodiments, the first mirror 202 and the second mirror 203 may also be directly made of metal with a reflective function.
In some embodiments, the head-up display device 200 further includes a motor unit 204, where the motor unit 204 is electrically connected to the second mirror 203, and the motor unit 204 is used to drive the second mirror 203 to move so as to change the position of the second mirror 203. The second mirror 203 may be controlled to move by the motor unit 204 such that the light reflected by the first mirror 202 and the light reflected by the reflective layer 2 are transmitted to different positions of the second mirror 203, thereby changing the reflection path of the light reflected by the second mirror 203 and adjusting the positions of the first virtual image and the second virtual image on the imaging part. For example, when the head-up display device 200 is applied to a vehicle, the imaging component may be a windshield of the vehicle, and the driver may adjust the position of the second mirror 203 through the motor unit 204 to control the positions of the first virtual image and the second virtual image on the windshield, so that the positions of the first virtual image and the second virtual image can be adjusted to a position more suitable for the vision of the driver, so that the head-up display device 200 can adapt to drivers with different heights, and the driving experience of the driver is improved.
Referring to fig. 8, and referring again to fig. 7, a third aspect of the present invention discloses a vehicle 300, wherein the vehicle 300 includes a vehicle body 301 and a head-up display device 200 as described above, the vehicle body 301 has an imaging component 3010, and the head-up display device is disposed on the vehicle body 301 to be projected to the imaging component 3010 for imaging. Since the vehicle body 301 has the head-up display device 200 described above, the vehicle body 301 also has the overall technical effect of the head-up display device 200, that is, the first virtual image and the second virtual image with different magnifications and different depths of field can be projected on the imaging component 3010 of the vehicle body 301, and meanwhile, the aperture ratio of the liquid crystal display device is increased, the light transmittance of the liquid crystal display device is improved, the brightness of the light emitting device is properly reduced, and the cost and the power consumption are saved.
Specifically, the imaging component 3010 may be a wedge-shaped windshield of the vehicle body 301. The wedge-shaped windscreen is a windscreen having opposite first and second ends 3011, 3012, and the thickness of the wedge-shaped windscreen decreases gradually in the direction of the first end 3011 towards the second end 3012. The wedge-shaped windshield of the vehicle body 301 is used as the imaging component 3010, on the one hand, because the windshield is a structural component of the vehicle body 301 itself, and the windshield is used as the imaging component 3010, the number of components required by the vehicle body 301 can be reduced, and the production cost of the vehicle body 301 can be effectively reduced. On the other hand, the windshield glass with the wedge-shaped structure can avoid the problem that double images exist in the first virtual image and the second virtual image, and is beneficial to improving the imaging effect.
The liquid crystal display device, the head-up display device and the vehicle disclosed in the embodiments of the present invention are described in detail, and specific examples are applied to the description of the principles and the implementation modes of the present invention, and the description of the above examples is only used for helping to understand the liquid crystal display device, the head-up display device and the vehicle of the present invention and the core ideas thereof; meanwhile, as those skilled in the art will vary in the specific embodiments and application scope according to the idea of the present invention, the present disclosure should not be construed as limiting the present invention in summary.
Claims (9)
1. A liquid crystal display device applied to a head-up display apparatus including a light emitting device, characterized in that the liquid crystal display device includes:
a substrate;
the reflecting layer is arranged on the substrate and is used for reflecting light rays emitted by the light-emitting device;
the transmission layer is arranged on the substrate and is spaced from the reflection layer;
a plurality of first thin film transistors disposed on the substrate and between the reflective layer and the transmissive layer;
the first pixel electrodes are arranged on the substrate and positioned between the substrate and the transmission layer, and are respectively and electrically connected with the first thin film transistors in a one-to-one correspondence manner; and
the shading layer is arranged corresponding to the first thin film transistor and is positioned on one side, far away from the substrate, of the first thin film transistor, and the shading layer is attached to the first thin film transistor or is arranged at intervals with the first thin film transistor and is used for preventing light from penetrating to the other side of the substrate after irradiating to the position of the first thin film transistor.
2. The liquid crystal display device according to claim 1, further comprising a second pixel electrode, a second thin film transistor, a first liquid crystal layer, and a first polarizer, wherein the second pixel electrode and the second thin film transistor are disposed on the substrate and between the substrate and the reflective layer, the second pixel electrode is electrically connected to the second thin film transistor, the first liquid crystal layer is disposed on a side of the reflective layer away from the second pixel electrode and the second thin film transistor, and the first polarizer is disposed on a side of the first liquid crystal layer away from the reflective layer.
3. The liquid crystal display device according to claim 2, further comprising a phase difference film provided between the first liquid crystal layer and the first polarizer.
4. The liquid crystal display device according to claim 2, further comprising a color film substrate disposed on a side of the transmissive layer and the first liquid crystal layer away from the first pixel electrode, and the light shielding layer is disposed on a side of the color film substrate away from the substrate.
5. A head-up display device, the head-up display device comprising:
a light emitting device;
the liquid crystal display device according to any one of claims 1 to 4, which is provided on a light-emitting side of the light-emitting device;
the first reflector is arranged on one side of the liquid crystal display device, which is far away from the light emitting device, and is used for reflecting the light transmitted through the transmission layer; and
the second reflector is arranged on one side, far away from the first reflector, of the liquid crystal display device, and is used for reflecting the light reflected by the first reflector to the imaging component to form a first virtual image, and is used for reflecting the light reflected by the reflecting layer to the imaging component to form a second virtual image.
6. The heads-up display device of claim 5 wherein the first mirror is a planar mirror and the second mirror is a curved mirror.
7. The heads-up display device of claim 5 further comprising a motor unit electrically coupled to the second mirror, the motor unit for driving the second mirror in motion to change a position of the second mirror.
8. A vehicle comprising a vehicle body having an imaging member and the head-up display device of any one of claims 5-7, the head-up display device being provided on the vehicle body for projection onto the imaging member for imaging.
9. The vehicle of claim 8, wherein the imaging member is a wedge-shaped windshield.
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| CN112748575A (en) * | 2019-10-31 | 2021-05-04 | 矢崎总业株式会社 | Display device for vehicle |
| CN213092017U (en) * | 2020-08-21 | 2021-04-30 | 未来（北京）黑科技有限公司 | Multilayer image display device, head-up display, and transportation apparatus |
| CN114077053A (en) * | 2020-08-21 | 2022-02-22 | 未来（北京）黑科技有限公司 | Double-layer imaging head-up display device, head-up display system and traffic equipment |
| CN112789545A (en) * | 2021-03-11 | 2021-05-11 | 华为技术有限公司 | HUD system, vehicle and virtual image position adjusting method |
| CN113219669A (en) * | 2021-05-19 | 2021-08-06 | 上海天马微电子有限公司 | Head-up display system and vehicle |
| CN113391451A (en) * | 2021-06-30 | 2021-09-14 | 上海天马微电子有限公司 | Display device and automobile |
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