CN110737127B - Mirror display device and mirror display control method - Google Patents
Mirror display device and mirror display control method Download PDFInfo
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- CN110737127B CN110737127B CN201910995305.3A CN201910995305A CN110737127B CN 110737127 B CN110737127 B CN 110737127B CN 201910995305 A CN201910995305 A CN 201910995305A CN 110737127 B CN110737127 B CN 110737127B
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- 239000004973 liquid crystal related substance Substances 0.000 description 8
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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
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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
- G02F1/09—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 magneto-optical elements, e.g. exhibiting Faraday effect
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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
- G02F1/133528—Polarisers
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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
- G02F1/133528—Polarisers
- G02F1/133536—Reflective polarizers
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133531—Polarisers characterised by the arrangement of polariser or analyser axes
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Abstract
The embodiment of the invention discloses a mirror display device and a mirror display control method. The mirror display device comprises a backlight module for providing backlight; the display module is used for displaying images; the reflecting layer is positioned above the display module and used for reflecting the ambient light with the polarization direction vertical to the transmission axis direction of the reflecting layer; a quantum rod polarizing film located above the reflective layer for switching a mirror display mode, an image display mode, and a display mode, wherein in the mirror display mode, a transmission axis direction of the quantum rod polarizing film is a first direction; in the image display mode, the transmission axis direction of the quantum rod polarizing film is a second direction; the transmission axis direction of the reflecting layer is a second direction. The mirror display device and the mirror display control method provided by the embodiment of the invention have the characteristics of good light transmission effect, thin thickness, low cost and convenient manufacturing process; the control method is simple, the control and display effects are good, and the power consumption is low.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a mirror display device and a mirror display control method.
Background
With the continuous development of display technologies, display devices for displaying a large amount of information have been rapidly developed. In recent years, display devices having a mirror function in addition to an image display function, that is, in an image display state, a display device displays an image, and in a mirror display state, a display device is used as a mirror, have been proposed and actively developed.
In the mirror display device of the prior art, ambient light is reflected so that the mirror display device can be used as a mirror. When the mirror display device is in a display state, the image reflected by the mirror display device and the displayed image are overlapped together, so that interference is generated between the reflected image and the displayed image, a user cannot see the displayed image clearly, and the display effect of the mirror display device is reduced.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a mirror display device and a mirror display control method, which can improve the display effect of the mirror display device.
According to an aspect of the present invention, there is provided a mirror display device including: the backlight module is used for providing backlight; the display module is positioned above the backlight module and used for displaying images; the reflecting layer is positioned above the display module and used for reflecting ambient light with the polarization direction vertical to the transmission axis direction of the reflecting layer; and a quantum rod polarizing film located above the reflective layer, for switching a mirror display mode, an image display mode, and different display modes of the mirror display device, wherein in the mirror display mode, a transmission axis direction of the quantum rod polarizing film is a first direction; in the image display mode, the transmission axis direction of the quantum rod polarizing film is a second direction; (ii) a The transmission axis direction of the reflecting layer is the second direction.
Preferably, the reflective surface of the reflective layer faces away from the display module.
Preferably, the reflective layer includes at least one selected from a reflective polarizer and a dual brightness enhancement film.
Preferably, the display module includes a first polarizer and a second polarizer located above the first polarizer; the transmission axis direction of the first polaroid is a first direction, and the transmission axis direction of the second polaroid is a second direction perpendicular to the first direction.
Preferably, the quantum rods in the quantum rod polarizing film have an initial alignment direction, the quantum rod polarizing film has an initial transmission axis direction, and the initial transmission axis direction is the first direction or the second direction.
Preferably, the quantum rod polarizing film includes: the quantum rod layer is provided with a light transmission axis in a specific direction when the quantum rods in the quantum rod layer are arranged in the specific direction, and polarized light in the specific direction passes through the light transmission axis; the first electrode layer is positioned above the quantum rod layer and comprises a plurality of first electrode wires which are parallel to each other, and the direction of each first electrode wire is a first direction or a second direction; and the second electrode layer is positioned below the quantum rod layer and comprises a plurality of second electrode wires which are parallel to each other, the direction of the second electrode wires is vertical to that of the first electrode wires, and the quantum rods in the quantum rod layer are arranged according to a specific direction under the control of the first electrode layer or the second electrode layer.
Preferably, the mirror display device further includes: a magnetic field generator for generating a magnetic field in a specific direction; under the magnetic field of the specific direction, the quantum rods in the quantum rod polarizing film are arranged according to the specific direction, have a transmission axis of the specific direction and pass the polarized light of the specific direction.
Preferably, the quantum rod polarizing film is divided into a plurality of regions in a horizontal direction, each of the regions being under individual control for realizing the mirror display mode or the image display mode.
Preferably, the quantum rod polarizing film includes a thin film transistor structure, and the mirror display device implements the mirror display mode or the image display mode at a pixel level.
According to another aspect of the present invention, there is provided a mirror display control method for controlling the above-described mirror display apparatus, the control method comprising: controlling the transmission axis direction of the quantum rod polarizing film to be perpendicular to the transmission axis direction of the reflecting layer in the mirror display mode; and controlling a transmission axis direction of the quantum rod polarizing film to be the same as a transmission axis direction of the reflective layer in the image display mode.
The mirror display device and the mirror display control method provided by the embodiment of the invention provide a new framework capable of realizing switching between mirror display and image display, and the new framework comprises a reflecting layer for providing a reflecting state and quantum rod polarizing films for controlling different display modes; the embodiment of the invention realizes the switching of the mirror display mode, the image display mode and different display modes by controlling the arrangement direction of the quantum rods in the quantum rod polarizing film and the reflection of the reflecting layer, and has the advantages of simple control method, good control and display effects and low power consumption; the quantum rod polarizing film has high vibration degree and good light transmission effect based on the physical characteristics of the quantum rod polarizing film.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent from the following description of the embodiments of the present invention with reference to the accompanying drawings, in which:
FIG. 1 is a schematic diagram showing a structure of a mirror display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing an optical path of a mirror display apparatus according to an embodiment of the present invention in a mirror display state;
FIG. 3 is a schematic diagram showing an optical path of a mirror display apparatus according to an embodiment of the present invention in an image display state;
FIG. 4 shows a schematic structural view of a quantum rod polarizing film according to an embodiment of the present invention;
FIG. 5 shows states of quantum rod polarizing films according to embodiments of the present invention in different modes;
FIG. 6 is a schematic diagram showing the optical paths of ambient light and display light when the mirror display apparatus according to the embodiment of the present invention is in the mirror display mode;
FIG. 7 is a schematic diagram showing the optical paths of ambient light and display light when the mirror display apparatus according to the embodiment of the present invention is in the image display mode;
FIG. 8 is a flowchart illustrating a method of controlling a mirror display according to an embodiment of the present invention;
FIG. 9 is a flowchart illustrating a method of another mirror display control method according to an embodiment of the present invention;
fig. 10 is a flowchart illustrating a method of still another mirror display control method according to an embodiment of the present invention.
Reference numerals
10-a backlight module; 20-a display module; 201-a first polarizer; 202-an array substrate;
203-liquid crystal layer; 204-color filters; 205-a second polarizer; 30-a reflective layer;
40-quantum rod polarizing film; 401 — a first electrode layer; 402-a quantum rod layer;
403-second electrode layer.
Detailed Description
Various embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. Like elements in the various figures are denoted by the same or similar reference numerals. For purposes of clarity, the various features in the drawings are not necessarily drawn to scale. Moreover, certain well-known elements may not be shown in the figures.
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. In the following description, numerous specific details of the invention, such as structure, materials, dimensions, processing techniques and techniques of components, are set forth in order to provide a more thorough understanding of the invention. However, as will be understood by those skilled in the art, the present invention may be practiced without these specific details.
It will be understood that when a layer, region or layer is referred to as being "on" or "over" another layer, region or layer in describing the structure of the component, it can be directly on the other layer, region or layer or intervening layers or regions may also be present. Also, if the component is turned over, one layer or region may be "under" or "beneath" another layer or region.
Fig. 1 is a schematic structural diagram of a mirror display device according to an embodiment of the present invention. As shown in fig. 1, the mirror display device provided by the embodiment of the present invention includes a backlight module 10, a display module 20, a reflective layer 30, and a quantum rod polarizing film 40.
The backlight module 10 is located at the bottom of the mirror display device and is used for providing backlight. The backlight module 10 includes, for example, a backlight source, a reflective sheet, a light guide plate, and a diffusion sheet.
The display module 20 is located above the backlight module 10 for displaying images. The display module 20 includes, for example, a first polarizer 201, an array substrate 202, a liquid crystal layer 203, a color filter 204, and a second polarizer 205 stacked in sequence. Wherein, the first polarizer 201 is located at the light incident side of the liquid crystal layer 203; the second polarizer 205 is located on the light exit side of the liquid crystal layer 203.
The reflective layer 30 is located above the display module 20 for providing a reflective state (i.e., implementing a mirror display). The reflective surface of the reflective layer 30 faces away from the display module 20. In the mirror display mode, the reflective layer is used to reflect ambient light. The reflective layer 30 includes, for example, an Advanced Polarizer Film (APF), i.e., a Polarizer containing APF material having a reflective function, or a Dual Brightness Enhancement Film (DBEF).
In an alternative embodiment of the present invention, the reflective layer 30 is a stand-alone device.
In a preferred embodiment of the present invention, the reflective layer 30 is laminated on the second polarizer 205. For example, if the reflective layer 30 is an APF, it may be multiplexed as the second polarizer 205 while serving as a reflective layer.
A quantum rod polarizing film 40 is positioned above the reflective layer 30 for controlling switching between the reflective state and the display state. The quantum rod polarizing film 40 includes, for example, an electrode layer and a quantum rod layer. The long axis of the quantum rod can be parallel to the applied electric field, and has polarization characteristics along the long axis direction.
The quantum rod polarizing film 40 also has a function of enhancing brightness, and is embedded in a liquid crystal display module, so that the radiation illumination can be obviously improved. According to related researches, the vibration degree of the oriented quantum rod film reaches 0.45, and the radiation illumination is increased by 18.4% when the oriented quantum rod film is embedded into a liquid crystal display module.
Fig. 2 is a schematic diagram showing an optical path of the mirror display apparatus according to the embodiment of the present invention in a mirror display state. As shown in fig. 2, the mirror display device includes a backlight module 10, a display module 20, a reflective layer 30, and a quantum rod polarizing film 40, which are sequentially stacked from bottom to top. Preferably, the reflective layer 30 is laminated on the display module 20 (the second polarizer 205). In the mirror display state, the transmission axis of the first polarizer 201 is along the 0 ° direction; the transmission axis of the second polarizer 205 is along the 90 ° direction; the transmission axis of the reflective layer 30 is along the 90 ° direction; the transmission axis of the quantum rod polarizing film 40 is in the 0 ° direction.
In the mirror display state, the quantum rod polarizing film 40 allows ambient light in the same direction as its transmission axis to pass therethrough. Since the direction of the transmission axis of the reflective layer 30 and the direction of the transmission axis of the quantum rod polarizing film 40 are perpendicular to each other, polarized light (transmitted ambient light) transmitted through the quantum rod polarizing film 40 cannot transmit through the reflective layer 30 and is reflected by the reflective layer 30. The reflected light passes through the quantum rod polarizing film 40 and exits the mirror display device, thereby realizing a mirror function.
Fig. 3 is a schematic diagram showing an optical path of the mirror display apparatus according to the embodiment of the present invention in an image display state. As shown in fig. 3, the mirror display device includes a backlight module 10, a display module 20, a reflective layer 30, and a quantum rod polarizing film 40, which are sequentially stacked from bottom to top. In an image display state, the transmission axis of the first polarizer 201 is along the 0 ° direction; the transmission axis of the second polarizer 205 is along the 90 ° direction; the transmission axis of the reflective layer 30 is along the 90 ° direction; the transmission axis of the quantum rod polarizing film 40 is in the 90 ° direction.
In the image display state, the quantum rod polarizing film 40 allows ambient light in the same direction as the transmission axis thereof to pass therethrough. Since the direction of the transmission axis of the reflection layer 30 is the same as the direction of the transmission axis of the quantum rod polarizing film 40, the polarized light (transmitted ambient light) transmitted through the quantum rod polarizing film 40 is transmitted through the reflection layer 30 without being reflected on the reflection surface of the reflection layer 30. In this case, the mirror display device realizes a display function, and since the ambient light passes through the reflective layer 30 and is not reflected, interference of the reflected light of the ambient light with the display light is avoided. Ambient light that penetrates the reflective layer 30 is absorbed.
Note that the light transmission axis direction of each layer is not limited to 0 ° and 90 °. The transmission axis of the first polarizer 201 is along a first direction, which may be any direction. The transmission axes of the second polarizer 205 and the reflective layer 30 are along the second direction. The quantum rod polarizing film 40 has a transmission axis in a first direction in the mirror display mode; in the image display mode, the transmission axis is along the second direction. Wherein the first direction and the second direction are perpendicular to each other.
In an alternative embodiment of the present invention, the quantum rods in the quantum rod polarizing film 40 are arranged neatly when not externally controlled. The initial direction of the transmission axis of the quantum rod polarizing film 40 is parallel to the transmission axis of the first polarizer 201. In the mirror display mode, the quantum rod polarizing film 40 is not required to be controlled, and the light transmission direction of the light transmission axis thereof is the initial direction. In the image display mode, the direction of the transmission axis of the quantum rod polarizing film 40 is made perpendicular to the initial direction by external control.
In an alternative embodiment of the present invention, the quantum rods in the quantum rod polarizing film 40 are arranged neatly when not externally controlled. The initial direction of the transmission axis of the quantum rod polarizing film 40 is parallel to the transmission axis of the second polarizer 205. In the mirror display mode, the direction of the transmission axis of the quantum rod polarizing film 40 is made perpendicular to the initial direction by external control. In the image display mode, the transmission direction of the transmission axis of the quantum polarizing film 40 is an initial direction without control.
Fig. 4 shows a schematic structural view of a quantum rod polarizing film according to an embodiment of the present invention. As shown in fig. 4, the quantum rod polarizing film 40 includes a first electrode layer 401, a quantum rod layer 402, and a second electrode layer 403. The first electrode layer 401 is located above the quantum rod layer 402 and includes a plurality of electrode lines parallel to each other. The second electrode layer 403 is located below the quantum rod layer 403 and includes a plurality of electrode lines parallel to each other. Wherein, the electrode lines in the first electrode layer 401 and the electrode lines in the second electrode layer 403 are perpendicular to each other.
Fig. 5 illustrates states of quantum rod polarizing films according to embodiments of the present invention in different modes. Different modes of the quantum rod polarizing film 40 will be described with reference to fig. 4 and 5. As shown in fig. (a), in the first mode, a voltage is applied to the second electrode layer 403 to form an electric field. Under the action of an electric field, the long axes of the quantum rods are arranged along the X direction. As shown in fig. b, in the second mode, a voltage is applied to the first electrode layer 401 to form an electric field. Under the action of an electric field, the quantum rods are arranged along the Y direction. With reference again to fig. 2, 3 and the descriptions of fig. 2 and 3, in the mirror display state, the quantum rod polarizing film 40 is in the first mode; in the image display state, the quantum rod polarizing film 40 is in the second mode.
In an alternative embodiment of the present invention, the direction of the applied magnetic field is used to control the arrangement of the quantum rods in the quantum rod layer 402. In this case, the structure and different modes of the quantum rod polarizing film 40 can be described with reference to fig. 4 and 5 and fig. 4 and 5.
In an alternative embodiment of the present invention, the quantum rod polarizing film 40 is divided into a plurality of regions, each of which can be controlled individually, and each of the regions includes the first electrode layer 401, the second electrode layer 403, and the quantum rod layer 402, and the quantum rod state in the quantum rod layer 402 can be the same or different by the individual control of the sub-regions, so as to realize a multi-display mode of partial-region mirror display and partial-region image display.
In an alternative embodiment of the present invention, the quantum rod polarizing film 40 employs a thin film transistor-like structure, enabling pixel-level control of the quantum rods in the quantum rod layer 402.
Fig. 6 is a schematic diagram showing optical paths of ambient light and display light when the mirror display apparatus according to the embodiment of the present invention is in the mirror display mode. As shown in fig. 6, the mirror display device includes a backlight module 10, a display module 20, a reflective layer 30, and a quantum rod polarizing film 40; the display module 20 includes a first polarizer 201 and a second polarizer 205.
In the mirror display mode, light rays (indicated by dotted lines) emitted from the backlight module 10 having a polarization direction equal to the transmission axis direction (0 °) of the first polarizer 201 can penetrate through the first polarizer 201, and the penetrated light rays sequentially pass through the liquid crystal layer 203 and the second polarizer 205, so as to obtain polarized light having a polarization direction equal to the transmission axis direction (90 °) of the second polarizer 205. The direction (90 °) of the transmission axis of the reflective layer 30 is the same as the transmission axis direction of the second polarizing plate 205, and polarized light transmitted through the second polarizing plate 205 can penetrate the reflective layer 30. The transmission axis direction (0 °) of the quantum rod polarizing film 40 is perpendicular to the transmission axis direction of the second polarizing plate 205, and polarized light transmitted through the second polarizing plate 205 cannot penetrate the quantum rod polarizing film 40.
The quantum rod polarizing film 40 allows ambient light in the same direction as its transmission axis to pass therethrough (shown by a solid line in the figure). Since the direction of the transmission axis of the reflective layer 30 and the direction of the transmission axis of the quantum rod polarizing film 40 are perpendicular to each other, polarized light (transmitted ambient light) transmitted through the quantum rod polarizing film 40 cannot transmit through the reflective layer 30 and is reflected by the reflective layer 30. The reflected light passes through the quantum rod polarizing film 40 and exits the mirror display device, thereby realizing a mirror function.
Generally speaking, in the mirror display mode, even if image display is performed simultaneously, the light of the image display is blocked, and the interference of the display light to the reflected light of the ambient light is avoided.
Fig. 7 is a schematic diagram showing optical paths of ambient light and display light when the mirror display apparatus according to the embodiment of the present invention is in the image display mode. As shown in fig. 7, the mirror display device includes a backlight module 10, a display module 20, a reflective layer 30, and a quantum rod polarizing film 40; the display module 20 includes a first polarizer 201 and a second polarizer 205.
In the image display mode, light rays (indicated by dotted lines) emitted from the backlight module 10 having a polarization direction equal to the transmission axis direction (0 °) of the first polarizer 201 can penetrate through the first polarizer 201, and the penetrated light rays sequentially pass through the liquid crystal layer 203 and the second polarizer 205, so as to obtain polarized light having a polarization direction equal to the transmission axis direction (90 °) of the second polarizer 205. The direction (90 °) of the transmission axis of the reflective layer 30 is the same as the transmission axis direction of the second polarizing plate 205, and polarized light transmitted through the second polarizing plate 205 can penetrate the reflective layer 30. The direction (90 °) of the transmission axis of the quantum rod polarizing film 40 is the same as the transmission axis direction of the second polarizing plate 205, and the polarized light transmitted through the second polarizing plate 205 can penetrate the quantum rod polarizing film 40, thereby realizing a display function.
In the image display state, the quantum rod polarizing film 40 allows ambient light in the same direction as the transmission axis thereof to pass therethrough (shown by a solid line in the figure). Since the direction of the transmission axis of the reflection layer 30 is the same as the direction of the transmission axis of the quantum rod polarizing film 40, the polarized light (transmitted ambient light) transmitted through the quantum rod polarizing film 40 is transmitted through the reflection layer 30 without being reflected on the reflection surface of the reflection layer 30.
Generally, in the image display mode, since the ambient light passes through the reflective layer 30 and is not reflected, the interference of the reflected light of the ambient light to the display light is avoided.
In a preferred embodiment of the present invention, when the mirror display apparatus is in the mirror display mode, the backlight module 10 and the display module 20 are turned off; when the mirror display device is in the image display mode, the backlight module 10 and the display module 20 are turned on.
Fig. 8 is a flowchart illustrating a method of controlling a mirror display according to an embodiment of the present invention. As shown in fig. 8, the method comprises the steps of:
in step S101, the mirror display apparatus receives a mirror display control signal;
the mirror display device receives the mirror display control signal, and the mirror display control signal is used for controlling the mirror display device to be in a mirror display state.
In step S102, the transmission axis direction of the quantum rod polarizing film and the transmission axis direction of the reflective layer are perpendicular to each other under the control of the mirror display control signal.
Under the control of the mirror display control signal, the arrangement of the quantum rods in the quantum rod polarization film is adjusted to ensure that the light transmission axis direction of the quantum rod polarization film is perpendicular to the light transmission axis direction of the reflection layer.
According to the control method described above, the mirror display device can perform mirror display. For a specific display method and a specific path of the optical path, please refer to the above related description.
Fig. 9 is a flowchart illustrating a method of another mirror display control method according to an embodiment of the present invention. As shown in fig. 9, the method includes the steps of:
in step S201, the mirror display apparatus receives an image display control signal;
the mirror display device receives an image display control signal, and the image display control signal is used for controlling the mirror display device to be in an image display state.
In step S202, the transmission axis direction of the quantum rod polarizing film is the same as the transmission axis direction of the reflective layer under the control of the image display control signal.
Under the control of the image display control signal, the arrangement of the quantum rods in the quantum rod polarizing film is adjusted so that the light transmission axis direction of the quantum rod polarizing film is the same as the light transmission axis direction of the reflective layer.
According to the control method described above, the mirror display device can display an image. For a specific display method and a specific path of the optical path, please refer to the above related description.
Fig. 10 is a flowchart illustrating a method of still another mirror display control method according to an embodiment of the present invention. As shown in fig. 10, the method comprises the steps of:
in step S301, the mirror display device is turned on;
turning on the mirror display device, for example, connecting the mirror display device to a power supply or turning on a main switch.
In step S302, it is determined whether or not the mirror display mode is in the mirror display mode, and if yes, step S303 is executed; if not, go to step S305;
judging the display mode of the mirror display device, and if the display mode is judged to be in the mirror display mode, executing step S303; if it is determined not to be in the mirror display mode, step S305 is performed.
In step S303, the quantum rod polarizing film receives a first control signal;
after the mirror display device is judged to be in the mirror display mode, the quantum rod polarization film receives the first control signal.
In step S304, the transmission axis direction of the quantum rod polarizing film and the transmission axis direction of the reflective layer are perpendicular to each other under the control of the first control signal;
under the control of the first control signal, the arrangement of the quantum rods in the quantum rod polarization film is adjusted so that the transmission axis direction of the quantum rod polarization film is perpendicular to the transmission axis direction of the reflection layer.
In step S305, the image display mode is turned on to display an image;
and if the mirror display device is judged not to be in the mirror display mode, starting the image display mode, and starting the backlight module and the display module to display the image.
In step S306, the quantum rod polarizing film receives a second control signal;
after the image display mode is turned on, the quantum rod polarizing film receives a second control signal.
In step S307, the transmission axis direction of the quantum rod polarizing film is the same as the transmission axis direction of the reflective layer under the control of the second control signal.
Under the control of the second control signal, the arrangement of the quantum rods in the quantum rod polarization film is adjusted, so that the light transmission axis direction of the quantum rod polarization film is the same as the light transmission axis direction of the reflection layer.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
While embodiments in accordance with the invention have been described above, these embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments described. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. The invention is limited only by the claims and their full scope and equivalents.
Claims (9)
1. A mirror display device, comprising:
the backlight module is used for providing backlight;
the display module is positioned above the backlight module and used for displaying images;
the reflecting layer is positioned above the display module and used for reflecting ambient light with the polarization direction vertical to the transmission axis direction of the reflecting layer; and
a quantum rod polarizing film located above the reflective layer for realizing a mirror display mode, an image display mode, and switching of different display modes of the mirror display device,
wherein, in the mirror display mode, the transmission axis direction of the quantum rod polarizing film is a first direction; in the image display mode, the transmission axis direction of the quantum rod polarizing film is a second direction; the light transmission axis direction of the reflecting layer is the second direction;
the quantum rod polarizing film includes:
the quantum rod layer is provided with a light transmission axis in a specific direction when the quantum rods in the quantum rod layer are arranged in the specific direction, and polarized light in the specific direction passes through the light transmission axis;
the first electrode layer is positioned above the quantum rod layer and comprises a plurality of first electrode wires which are parallel to each other, and the direction of each first electrode wire is a first direction or a second direction;
the second electrode layer is positioned below the quantum rod layer and comprises a plurality of second electrode wires which are parallel to each other, the direction of the second electrode wires is vertical to the direction of the first electrode wires,
wherein the quantum rods in the quantum rod layer are arranged in a specific direction under the control of the first electrode layer or the second electrode layer.
2. A mirror display device according to claim 1, wherein the reflective surface of the reflective layer faces away from the display module.
3. The mirror display device according to claim 1, wherein the reflective layer comprises at least one selected from a reflective polarizer and a dual brightness enhancement film.
4. The mirror display device according to claim 1, wherein the display module comprises a first polarizer and a second polarizer located above the first polarizer; the transmission axis direction of the first polaroid is the first direction, and the transmission axis direction of the second polaroid is the second direction perpendicular to the first direction.
5. The mirror display device according to claim 1, wherein the quantum rods in the quantum rod polarizing film have an initial alignment direction, the quantum rod polarizing film has an initial transmission axis direction, and the initial transmission axis direction is the first direction or the second direction.
6. The mirror display device according to claim 1, further comprising:
a magnetic field generator for generating a magnetic field in a specific direction;
under the magnetic field of the specific direction, the quantum rods in the quantum rod polarizing film are arranged according to the specific direction, have a transmission axis of the specific direction and pass the polarized light of the specific direction.
7. The mirror display device according to claim 1, wherein the quantum rod polarizing film is divided into a plurality of regions in a horizontal direction, each of the regions being under individual control for realizing the mirror display mode and/or the image display mode.
8. The mirror display device according to claim 7, wherein the quantum rod polarizing film includes a thin film transistor structure, and the mirror display device realizes the mirror display mode or the image display mode on a pixel level.
9. A mirror display control method for controlling the mirror display apparatus according to any one of claims 1 to 8, characterized by comprising:
controlling the transmission axis direction of the quantum rod polarizing film to be perpendicular to the transmission axis direction of the reflecting layer in the mirror display mode; and
and controlling the transmission axis direction of the quantum rod polarizing film to be the same as that of the reflecting layer in the image display mode.
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| JP2004184490A (en) * | 2002-11-29 | 2004-07-02 | Seiko Epson Corp | Display device and electronic appliance equipped with the same |
| CN104166268A (en) * | 2014-07-24 | 2014-11-26 | 京东方科技集团股份有限公司 | Mirror surface display device |
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| CN106526951A (en) * | 2016-11-29 | 2017-03-22 | 京东方科技集团股份有限公司 | Mirror display device and control method thereof |
| KR20180134137A (en) * | 2017-06-08 | 2018-12-18 | 삼성전자주식회사 | Display apparatus |
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| JP2004184490A (en) * | 2002-11-29 | 2004-07-02 | Seiko Epson Corp | Display device and electronic appliance equipped with the same |
| CN104166268A (en) * | 2014-07-24 | 2014-11-26 | 京东方科技集团股份有限公司 | Mirror surface display device |
| CN105467653A (en) * | 2015-12-08 | 2016-04-06 | 深圳市华星光电技术有限公司 | Liquid crystal display panel and quantum rod polaroid manufacturing method |
| CN106526951A (en) * | 2016-11-29 | 2017-03-22 | 京东方科技集团股份有限公司 | Mirror display device and control method thereof |
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