CN109298572B - Angle regulator and manufacturing method thereof, display device and angle regulating method - Google Patents
Angle regulator and manufacturing method thereof, display device and angle regulating method Download PDFInfo
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- CN109298572B CN109298572B CN201811210486.6A CN201811210486A CN109298572B CN 109298572 B CN109298572 B CN 109298572B CN 201811210486 A CN201811210486 A CN 201811210486A CN 109298572 B CN109298572 B CN 109298572B
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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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Abstract
The invention discloses an angle regulator, a manufacturing method of the angle regulator, a display device and an angle regulating method, and belongs to the technical field of display. The angle adjuster includes: a sealed chamber, the sealed chamber comprising: two transparent substrates parallel to each other, and a liquid crystal layer disposed between the two transparent substrates; at least one of the two transparent substrates is provided with a transparent electrode structure, and the transparent electrode structure is configured and loaded with voltage for controlling the deflection of the liquid crystal layer, so that the emergent angle is smaller than the incident angle after any light ray passes through the sealed cavity. When the angle adjuster is arranged in the reflective display device, the light emitted from the light-emitting surface of the reflective display device can be adjusted by the angle adjuster, so that the reflectivity of the reflective display device is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to an angle regulator, a manufacturing method of the angle regulator, a display device and an angle regulating method.
Background
A reflective liquid crystal display device is a device that displays a picture by reflecting ambient light. It includes: the pixel electrode in the reflective display panel is made of a metal material, and the pixel electrode in the array substrate can reflect light.
However, as the resolution of the reflective liquid crystal display panel is improved, the area of the pixel electrode in the reflective display panel is smaller, resulting in a lower reflectance of the reflective display device. Since the reflectivity of the reflective display device can be improved to a certain extent by adjusting the exit angle of the light emitted from the light-emitting surface of the reflective display device, there is an urgent need for an angle adjuster capable of adjusting the exit angle of the light.
Disclosure of Invention
The embodiment of the invention provides an angle regulator, a manufacturing method thereof, a display device and an angle regulating method, which can improve the reflectivity of a reflective display device. The technical scheme is as follows:
in a first aspect, there is provided an angle adjuster comprising:
a sealed chamber, the sealed chamber comprising: the liquid crystal display panel comprises two transparent substrates which are parallel to each other and a liquid crystal layer arranged between the two transparent substrates;
and at least one of the two transparent substrates is provided with a transparent electrode structure, and the transparent electrode structure is configured and loaded with voltage for controlling the deflection of the liquid crystal layer, so that an emergent angle is smaller than an incident angle after any light ray passes through the sealed cavity.
Optionally, the two transparent substrates include: a first transparent substrate and a second transparent substrate, each of the transparent substrates having a transparent electrode structure disposed thereon,
the orthographic projection of the transparent electrode structure arranged on the second transparent substrate on the first transparent substrate is not overlapped with the orthographic projection of the transparent electrode structure arranged on the first transparent substrate.
Optionally, each of the transparent substrates is rectangular, each of the transparent substrates can be divided into four electrode arrangement regions by two diagonal lines of the transparent substrate,
the transparent electrode structure in the first transparent substrate includes: a plurality of first electrodes provided at intervals in each electrode providing region;
the transparent electrode structure in the second transparent substrate includes: a plurality of second electrodes provided at intervals in each electrode providing region.
Optionally, each electrode arrangement region is a triangular region,
in the first transparent substrate, the arrangement direction of the plurality of first electrodes in each triangular region is perpendicular to a first boundary, and the first boundary is a common boundary with the first transparent substrate in the triangular region;
in the second transparent substrate, the arrangement direction of the plurality of second electrodes in each triangular region is perpendicular to a second boundary, and the second boundary is a common boundary with the second transparent substrate in the triangular region.
Optionally, the liquid crystal monomer in the liquid crystal layer is a positive liquid crystal monomer or a negative liquid crystal monomer.
In a second aspect, there is provided a method of manufacturing an angle adjuster, the method comprising:
forming a liquid crystal layer between two transparent substrates parallel to each other to form a sealed cavity;
and a transparent electrode structure is formed on at least one of the two transparent substrates, and the transparent electrode structure is configured to load a voltage for controlling the deflection of the liquid crystal layer, so that an exit angle of any light ray is smaller than an incident angle after the light ray passes through the sealed cavity.
In a third aspect, there is provided a display device comprising:
a reflective display panel;
the optical detector is used for detecting the angle information of the light ray with the strongest light intensity in the ambient light rays incident on the display device;
an angle adjuster disposed on a light exit surface of the reflective display panel, the angle adjuster being any one of the angle adjusters of the first aspect;
and the transparent electrode structure in the angle adjuster and the optical detector are connected with the control component, and the control component is used for: and controlling the transparent electrode structure to load a voltage for controlling the deflection of the liquid crystal layer according to the angle information so that the emergent angle is smaller than the incident angle after the light with the strongest light intensity passes through the display device.
Optionally, the angle information includes: the angle information of the incident angle of the light with the strongest light intensity entering the light-emitting surface of the display device and the direction information of the light with the strongest light intensity entering the display device.
Optionally, the two transparent substrates include: first transparent substrate and second transparent substrate, the transparent electrode structure that sets up on the first transparent substrate includes: a plurality of first electrodes, the transparent electrode structure disposed on the second transparent substrate comprising: a plurality of second electrodes, wherein orthographic projections of the plurality of first electrodes on the first transparent substrate are not coincident with orthographic projections of the plurality of second electrodes on the first electrodes;
each first electrode and each second electrode are connected with the control assembly, and the control assembly is used for: and determining a target first electrode in the plurality of first electrodes and a target second electrode in the plurality of second electrodes according to the angle information, and controlling the target first electrode and the target second electrode to be loaded with voltage so as to deflect the liquid crystal monomer in the liquid crystal layer between the two transparent substrates.
In a fourth aspect, there is provided an angle adjustment method applied to the display device according to any one of the third aspects, the method including:
acquiring angle information of light with the strongest light intensity in ambient light incident on the display device;
and controlling the transparent electrode structure to load a voltage for controlling the deflection of the liquid crystal layer according to the angle information so that an emergent angle is smaller than an incident angle after the light with the strongest light intensity passes through the display device.
The technical scheme provided by the embodiment of the invention has the following beneficial effects:
the angle adjuster includes: the liquid crystal display panel comprises a sealed cavity and a liquid crystal layer, wherein the sealed cavity comprises two transparent substrates which are parallel to each other and the liquid crystal layer is arranged between the two transparent substrates; at least one of the two transparent substrates is provided with a transparent electrode structure. The transparent electrode structure is configured to be loaded with a voltage for controlling the deflection of the liquid crystal layer, so that the exit angle is smaller than the incident angle after any light ray passes through the sealed cavity. When the angle adjuster is arranged in the reflective display device, the light emitted from the light emitting surface of the reflective display device can be adjusted by the angle adjuster, so that the light emitted from the reflective display device can enter the visual field of a user more, and the reflectivity of the reflective display device can be improved through the angle adjuster.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is an angle adjuster according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating a deflection of a liquid crystal cell according to an embodiment of the present invention;
FIG. 3 is a light path diagram of light rays passing through the angle adjuster shown in FIG. 1;
FIG. 4 is a schematic structural diagram of another angle adjuster according to an embodiment of the present invention;
FIG. 5 is a diagram illustrating the effect of the liquid crystal cell deflection in the liquid crystal layer according to the embodiment of the present invention;
FIG. 6 is a top view of a transparent substrate according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a reflective display device provided in the related art;
FIG. 8 is a schematic diagram of a method of manufacturing the asymmetric diffuser film of FIG. 7;
FIG. 9 is a schematic diagram of testing reflectivity of a reflective display device;
FIG. 10 is a graph illustrating the effect of increasing the reflectivity of the reflective display device of FIG. 7;
fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention;
FIG. 12 is an effect diagram of a control assembly controlling an angle adjuster in the display device of FIG. 11;
FIG. 13 is a graph of the effect of increasing the magnitude of the reflectivity of the display device based on the display device shown in FIG. 11;
fig. 14 is a schematic structural diagram of another display device provided in an embodiment of the present invention;
FIG. 15 is a flow chart of a method of manufacturing an angle adjuster according to an embodiment of the present disclosure;
fig. 16 is a flowchart of an angle adjustment method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, fig. 1 is a schematic diagram of an angle adjuster 100 according to an embodiment of the present invention, where the angle adjuster includes: the chamber 10 is sealed.
The sealed housing 10 includes: two transparent substrates 11 parallel to each other, and a liquid crystal layer 12 disposed between the two transparent substrates 11. In an alternative implementation, the sealed housing 10 further includes: the sealant frame 13 disposed between the two transparent substrates 11 can form a cavity space through the two transparent substrates 11 and the sealant frame 13, and the liquid crystal layer 12 can be located in the cavity space.
At least one of the two transparent substrates 11 is provided with a transparent electrode structure 111. It should be noted that fig. 1 schematically illustrates an example in which transparent electrode structures 111 are disposed on both of the two transparent substrates 11, and in another alternative implementation, a transparent electrode structure may be disposed on one of the two transparent substrates 11.
The transparent electrode structure 111 is configured to be applied with a voltage for controlling the deflection of the liquid crystal layer 12 such that the exit angle is smaller than the incident angle after any light ray passes through the sealed cavity. It should be noted that, the liquid crystal layer 12 includes a plurality of liquid crystal monomers (also commonly referred to as liquid crystal molecules) 121 and a solution 122 for wrapping the plurality of liquid crystal monomers 121, and the liquid crystal layer 12 deflection in the embodiment of the present application refers to: the liquid crystal cell 121 in the liquid crystal layer 12 is deflected.
For example, as shown in fig. 2, fig. 2 is a schematic diagram of a liquid crystal cell 121 that is deflected according to an embodiment of the present invention, and when a voltage is not applied to the transparent electrode structures 111 disposed on the two transparent substrates 11, the liquid crystal cell is not deflected; when the transparent electrode structures 111 disposed on the two transparent substrates 11 are applied with a voltage, the liquid crystal cell 121 is deflected.
As shown in fig. 3, fig. 3 is a light path diagram of light rays passing through the angle adjuster shown in fig. 1, and if all the liquid crystal cells 121 in the liquid crystal layer 12 are deflected, after any light ray passes through the sealed cavity 10, the exit angle θ 2 is smaller than the incident angle θ 1.
In the embodiment of the invention, when the angle adjuster 100 is disposed in the reflective display device, the light emitted from the light-emitting surface of the reflective display device passes through the sealed cavity 10 in the angle adjuster 100, so that the exit angle of the light emitted from the light-emitting surface of the reflective display device can be adjusted by the angle adjuster 100. Since the exit angle of the light adjusted by the angle adjuster 100 is small, the light exiting from the reflective display device can enter more into the field of view of a user (the user refers to a user using the reflective display device), and thus the reflectivity of the reflective display device can be improved by the angle adjuster.
In summary, the angle adjuster provided in the embodiment of the present invention includes: the liquid crystal display panel comprises a sealed cavity and a liquid crystal layer, wherein the sealed cavity comprises two transparent substrates which are parallel to each other, and the liquid crystal layer is arranged between the two transparent substrates; at least one of the two transparent substrates is provided with a transparent electrode structure. The transparent electrode structure is configured to be loaded with a voltage for controlling the deflection of the liquid crystal layer, so that the exit angle is smaller than the incident angle after any light ray passes through the sealed cavity. When the angle adjuster is arranged in the reflective display device, the light emitted from the light emitting surface of the reflective display device can be adjusted by the angle adjuster, so that the light emitted from the reflective display device can enter the visual field of a user more, and the reflectivity of the reflective display device can be improved through the angle adjuster.
Optionally, as shown in fig. 4, fig. 4 is a schematic structural diagram of another angle adjuster provided in the embodiment of the present invention. Each transparent substrate 11 is provided with a transparent electrode structure 111, each transparent substrate 11 is further provided with an alignment film 112 for wrapping the transparent electrode structure 111, and the liquid crystal monomers 121 in the liquid crystal layer 12 can be regularly arranged under the action of the alignment film 112. In an embodiment of the present invention, the two transparent substrates 11 in the sealed cavity 10 may include: the display device comprises a first transparent substrate 11a and a second transparent substrate 11b, wherein the orthographic projection of a transparent electrode structure 111 arranged on the second transparent substrate 11b on the first transparent substrate 11a is not overlapped with the orthographic projection of the transparent electrode structure 111 arranged on the first transparent substrate 11 a. At this time, when a voltage is applied between the first electrode 11a and the second electrode 11b, an electric field that is not perpendicular to the transparent substrates 11 can be formed between the two transparent substrates 11, so that the liquid crystal cell 121 can be deflected at a certain angle.
It should be noted that the liquid crystal monomer 121 in the embodiment of the present invention may be a positive liquid crystal monomer or a negative liquid crystal monomer. When no voltage is applied to the forward liquid crystal monomer, the direction of the long axis of the forward liquid crystal monomer is parallel to the transparent substrates 11 under the action of the alignment film 112, and when an electric field is formed between the two transparent substrates 11, the direction of the long axis of the forward liquid crystal monomer is parallel to the direction of the electric field force between the two transparent substrates 11; when no voltage is applied to the negative direction liquid crystal monomer, the direction of the long axis of the negative direction liquid crystal monomer is perpendicular to the transparent substrates 11 under the action of the alignment film 112, and when an electric field is formed between the two transparent substrates 11, a certain angle, generally 90 °, exists between the direction of the long axis of the negative direction liquid crystal monomer and the direction of the electric field force between the two transparent substrates 11.
It should be noted that, when the long axis of the liquid crystal cell 121 is parallel to or perpendicular to the transparent substrate 11, the liquid crystal cell 121 has a small influence on the transmission direction of light in the liquid crystal layer 12; when the long axis of the lc cell 121 is not parallel to or perpendicular to the transparent substrate 11, the lc cell 121 has a large influence on the transmission direction of light in the lc layer 12. By applying a voltage to the transparent electrode structure 111 disposed on the transparent substrate 11 to deflect the liquid crystal cell 121, the direction of the long axis of the liquid crystal cell 121 can be controlled to be not parallel or perpendicular to the transparent substrate 11, so that the angle adjuster 100 can effectively adjust the exit angle of the light passing through the sealed cavity 10.
It should be noted that, as shown in fig. 5, fig. 5 is a diagram illustrating the effect of the liquid crystal monomer deflection in the liquid crystal layer in the embodiment of the present invention. Under the action of the alignment film, the liquid crystal monomer 121a in the liquid crystal layer, which is in contact with the alignment film, is not deflected, and the liquid crystal monomer 121b in the liquid crystal layer, which is not in contact with the alignment film, is deflected.
In the embodiment of the present invention, as shown in fig. 6, fig. 6 is a top view of a transparent substrate provided in the embodiment of the present invention, and the transparent substrate 11 may be a first transparent substrate or a second transparent substrate. The transparent substrate 11 is formed in a generally rectangular shape, and the transparent substrate 11 can be divided into 4 electrode-providing regions by two diagonal lines L1, L2 of the transparent substrate 11.
If the transparent substrate 11 is a first transparent substrate, the transparent electrode structure in the first transparent substrate includes: a plurality of first electrodes 111a provided at intervals in each electrode providing region. In the embodiment of the present invention, each of the electrode disposition regions may be a triangular region, and the arrangement direction of the plurality of first electrodes 111a disposed in each triangular region is perpendicular to a first boundary, which is a common boundary with the first transparent substrate in the triangular region.
If the transparent substrate 11 is a second transparent substrate, the transparent electrode structure in the second transparent substrate includes: a plurality of second electrodes 111b provided at intervals in each electrode providing region. In the embodiment of the present invention, each of the electrode disposing regions may be a triangular region, and the arrangement direction of the plurality of second electrodes 111b disposed in each triangular region is perpendicular to a second boundary, which is a common boundary of the triangular region and the second transparent substrate.
As shown in fig. 6, in the embodiment of the present invention, the 4 electrode arrangement regions in the transparent substrate 11 are: an electrode providing region a1, an electrode providing region a2, an electrode providing region A3, and an electrode providing region a4, wherein the electrode providing region a1 is opposite to the electrode providing region A3, and the electrode providing region a2 is opposite to the electrode providing region a 4.
Assuming that the transparent substrate 11 is located in a coordinate system and the center of the transparent substrate 11 coincides with the origin O of the coordinate system:
when the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate 11 is parallel to the direction of the x axis, after the voltage for controlling the polarization of the liquid crystal layer is applied to the transparent electrode structures in the electrode arrangement area a2 and the electrode arrangement area a4, it can be ensured that the emergent angle is smaller than the incident angle after the light ray incident from the first transparent substrate passes through the seal cavity.
When the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate 11 is parallel to the direction of the y axis, after the voltage for controlling the polarization of the liquid crystal layer is loaded on the transparent electrode structures in the electrode arrangement area a1 and the electrode arrangement area A3, it can be ensured that the emergent angle is smaller than the incident angle after the light ray incident from the first transparent substrate passes through the seal cavity.
When the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate 11 is not parallel to the direction of the x axis, nor is the orthographic projection of the direction of the light ray incident from the first transparent substrate parallel to the direction of the y axis, after the voltage for controlling the polarization of the liquid crystal layer is loaded on the transparent electrode structure in each electrode arrangement area, the light ray incident from the first transparent substrate can be ensured to pass through the seal cavity, and the emergent angle is smaller than the incident angle.
Taking as an example that the transparent electrode structures in the electrode disposing region a2 and the electrode disposing region a4 are applied with voltage, and the transparent electrode structures in the electrode disposing region a1 and the electrode disposing region A3 are not applied with voltage, a description will be given of analyzing a deflection form of liquid crystal cells in the liquid crystal layer:
in the liquid crystal layer, the liquid crystal cells corresponding to the electrode providing region a2 and the electrode providing region a4 are deflected by the electric field force, and the liquid crystal cells corresponding to the electrode providing region a1 and the electrode providing region A3 are not influenced by the electric field force but only by the interaction force between the liquid crystal cells, so that the liquid crystal cells corresponding to the electrode providing region a1 and the electrode providing region A3 are deflected by the influence of the liquid crystal cells corresponding to the electrode providing region a2 and the electrode providing region a 4.
In summary, the angle adjuster provided in the embodiment of the present invention includes: the liquid crystal display panel comprises a sealed cavity and a liquid crystal layer, wherein the sealed cavity comprises two transparent substrates which are parallel to each other and the liquid crystal layer is arranged between the two transparent substrates; at least one of the two transparent substrates is provided with a transparent electrode structure. The transparent electrode structure is configured to be loaded with a voltage for controlling the deflection of the liquid crystal layer, so that the exit angle is smaller than the incident angle after any light ray passes through the sealed cavity. When the angle adjuster is arranged in the reflective display device, the light emitted from the light emitting surface of the reflective display device can be adjusted by the angle adjuster, so that the light emitted from the reflective display device can enter the visual field of a user more, and the reflectivity of the reflective display device can be improved through the angle adjuster.
In the related art, in order to improve the reflectivity of the reflective display device, an asymmetric scattering film may be disposed on the light-emitting surface of the reflective display panel. For example, referring to fig. 7, fig. 7 is a schematic structural diagram of a reflective display device provided in the related art, and the reflective display device 010 may include: the display device comprises a reflective display panel 01 and an asymmetric scattering film 02 arranged on a light-emitting surface of the reflective display panel 01. The asymmetric scattering film 02 includes: and a sealed cavity 021 in which the high refractive index monomer 02a and the low refractive index monomer 02b are disposed.
Referring to fig. 8, fig. 8 is a schematic diagram of manufacturing the asymmetric scattering film in fig. 7, two materials with larger refractive index difference and different reactivity are filled in the sealed cavity 021. After the first ultraviolet irradiation, the material with higher reactivity in the sealed cavity 021 has a polymerization reaction; after the second UV irradiation, the material with lower reactivity in the sealed cavity 021 undergoes a polymerization reaction. After the ultraviolet irradiation is performed twice, the high refractive index monomer 02a and the low refractive index monomer 02b may be formed in the sealed cavity 021.
As shown in fig. 7, after the outgoing light beam emitted from the light-emitting surface of the reflective display panel 01 passes through the asymmetric scattering film 02, the outgoing angle of the outgoing light beam is small, so that the outgoing light beam from the reflective display device 010 can enter into the visual field of a user (the user refers to the user using the reflective display device 010), and the reflectivity of the reflective display device 010 can be improved through the asymmetric scattering film 02.
Since the asymmetric scattering film 02 is formed of two materials having a large difference in refractive index, once the two materials having a large difference in refractive index are determined, the refractive index in the asymmetric scattering film 02 is fixed. At this time, if the incident light is incident on the reflective display device 010 at a predetermined incident angle, the emergent angle of the light emitted from the asymmetric scattering film 02 is small, and the reflectivity of the reflective display device 010 is greatly improved by the asymmetric scattering film 02; on the other hand, if the incident light enters the reflective display device 010 from another incident angle, the exit angle of the light exiting from the asymmetric scattering film 02 is large, and the reflectivity of the reflective display device 010 is not improved or is improved little by the asymmetric scattering film 02.
To further illustrate the influence of the incident angle α of the incident light on the reflectivity of the reflective display device 010, as shown in fig. 9, fig. 9 is a schematic diagram for testing the reflectivity of the reflective display device, and an optical intensity sensor 020 for detecting the optical intensity may be disposed right above the light exit surface of the reflective display device 010. After the light enters the reflective display device 010 and exits from the light exit surface of the reflective display device 010, the intensity sensor 020 can detect the intensity of the exiting light.
During actual test, the incident light can be controlled to be incident into the reflective display device from different directions at a certain incident angle alpha, and a first light intensity of the light emitted by the reflective display device provided with the asymmetric scattering film and a second light intensity of the light emitted by the reflective display device not provided with the asymmetric scattering film are respectively detected by the light intensity sensor 020. The ratio of the first light intensity to the second light intensity is called the increase rate of the emissivity of the reflective display device, and the increase rate is used for demonstrating the increase of the reflectivity of the reflective display device by the asymmetric scattering film 02.
Draw the effect picture that the reflectivity of reflective display device promotes size as shown in fig. 10 through first light intensity and second light intensity, in fig. 10, use nodical O' to confirm 4 axis as the clockwise direction of center, do respectively: the 0 ° axis, the 90 ° axis, the 180 ° axis and the 270 ° axis, the 4 axes representing incident directions of incident light rays with respect to the reflective display device, and points in each axis respectively represent a rate of increase of reflectivity of the reflective display device by the asymmetric scattering film.
According to the above test principle, curves of the improvement rate of the reflectivity of the reflective display device by the asymmetric scattering film after the incident light is incident into the reflective display device from different directions at the incident angles α of 10 °, 20 ° and 30 ° can be plotted in fig. 10. As can be seen from fig. 10, when the incident angle of the incident light is 10 °, the improvement rate of the reflectivity of the reflective display device by the asymmetric scattering film is large; when the incident angle of the incident light is 30 °, the improvement rate of the reflectivity of the reflective display device by the asymmetric scattering film is small.
Therefore, the current reflective display device provided with an asymmetric scattering film has a large limitation in use.
In the embodiment of the present invention, the angle adjuster shown in fig. 1 or 4 may be used instead of the asymmetric scattering film in the existing reflective display device.
As shown in fig. 11, fig. 11 is a schematic structural diagram of a display device according to an embodiment of the present invention, where the display device may be a reflective display device, and the display device may include:
an angle adjuster 100, a reflective display panel 200, an optical detector 300, and a control assembly 400.
The optical detector 300 is used to detect the angle information of the strongest light among the ambient light incident on the display device. It should be noted that the optical detector 300 may be a photosensitive device, and the optical detector 300 is generally disposed on one side of the light emitting surface of the display device.
The angle adjuster 100 is disposed on a light emitting surface of the reflective display panel 200, and the angle adjuster 100 may be the angle adjuster shown in fig. 1 or fig. 4.
The transparent electrode structure 111 and the optical detector 300 in the angle adjuster 100 are connected to the control unit 400. The control assembly 400 is configured to: based on the angle information detected by the optical detector 300, the transparent electrode structure 111 is controlled to apply a voltage for controlling the deflection of the liquid crystal layer 12, so that the exit angle is smaller than the incident angle after the light with the strongest intensity passes through the display device.
In the embodiment of the present invention, since the optical detector 300 can detect the angle information of the strongest light in the ambient light incident on the display device in real time, the control component 400 can adjust the exit angle of the strongest light by controlling the angle adjuster 100 when the strongest light exits from the exit surface of the display device based on the angle information, so that the strongest light can enter the field of view of the user more, thereby improving the reflectivity of the display device.
Optionally, the angle information includes: the angle information of the incident angle of the light with the strongest light intensity entering the light-emitting surface of the display device and the direction information of the light with the strongest light intensity entering the display device.
In an alternative implementation manner, each transparent substrate 11 is provided with a transparent electrode structure 111, and the transparent electrode structures 111 provided on each transparent substrate 11 may be arranged in a manner as shown in fig. 6. Each first electrode provided on the first transparent substrate 11a is connected to the control module 400, and each second electrode provided on the second transparent substrate 11b is connected to the control module 400.
In the embodiment of the present invention, different deflection angles of the liquid crystal monomers directly affect the adjustment capability of the angle adjuster for adjusting the exit angles of the light beams, and in order to ensure that the exit angles of the exit light beams are smaller after the light beams incident from any angle exit through the angle adjuster, the control assembly 400 can determine the deflection angle of the liquid crystal monomer to be controlled (the angle refers to the included angle between the direction of the long axis of the liquid crystal monomer and the transparent substrate) according to the angle information of the incident angle of the light beam with the strongest light intensity entering the exit surface of the display device. The control module 400 can also determine which transparent electrode structure in the electrode arrangement region needs to be applied with voltage according to the information of the direction in which the light with the strongest intensity is incident on the display device. Accordingly, the control unit 400 may determine a target first electrode among the plurality of first electrodes and a target second electrode among the plurality of second electrodes according to the angle information, and control the target first electrode and the target second electrode to apply a voltage to deflect the liquid crystal cell in the liquid crystal layer between the two transparent substrates 11.
When the angle regulator is arranged in the reflective display device, the light rays incident on the reflective display device from different incident angles can be enabled to pass through the angle regulator, and after the light rays are emergent from the light emergent surface of the reflective display device, the emergent angles of the emergent light rays are smaller, so that the use limitation of the reflective display device is effectively reduced, and the display effect of the reflective display device under the irradiation of different ambient light rays is better.
For example, assume that the angle of the incident angle of the light with the strongest light intensity in the ambient light incident on the light exit surface of the display device is a first angle, and the orthographic projection of the light with the strongest light intensity on the transparent substrate shown in fig. 6 is parallel to the direction of the x-axis. At this time, the control assembly 400 may determine that it needs to control the transparent electrode structures in the electrode disposing region a2 and the electrode disposing region a4, and the control assembly 400 determines that the included angle between the direction of the electric field force between the two transparent substrates and the transparent substrate 11 is a second angle according to the first angle, so that the first electric target electrode and the second electric target electrode may be determined in the transparent electrode structure based on the second angle.
For example, as shown in fig. 12, fig. 12 is a diagram showing an effect of the control assembly controlling the angle adjuster in the display device of fig. 11. In order to realize that the included angle between the direction of the electric field force between the two transparent substrates 11 and the transparent substrate 11 is the second angle β, the control component 400 needs to be located in the electrode installation region a2 and the electrode installation region a4 in the first transparent substrate 11a to determine the first target electrode 11a1, and be located in the electrode installation region a2 and the electrode installation region a4 in the second transparent substrate 11b to determine the second target electrode 11b1, at this time, when the control component 400 applies a voltage to the first target electrode 11a1 and the second target electrode 11b1, the included angle between the direction of the electric field force between the two transparent substrates 11 and the transparent substrate 11 can be the second angle β.
It should be noted that, the corresponding relationship between the first angle and the second angle is related to the refraction performance of the liquid crystal monomer, and when liquid crystal monomers with different refraction performances are adopted, the corresponding relationship between the first angle and the second angle needs to be established through experimental simulation, and the corresponding information is stored in the control component.
Referring to fig. 13, fig. 13 is a graph illustrating the effect of increasing the reflectivity of the display device based on the display device shown in fig. 11. In fig. 13, curves of the increasing rate of the reflectivity of the reflective display device by the angle adjuster after the light with the strongest light is incident into the reflective display device from different directions at the incident angles of 10 °, 20 ° and 30 ° are plotted, respectively. As can be seen from fig. 13, the reflectivity of the reflective display device is improved by the optical adjuster at substantially the same rate for different incident angles of the light with the strongest light intensity.
Optionally, referring to fig. 14, fig. 14 is a schematic structural diagram of another display device according to an embodiment of the present invention. The display device further includes: a polarizer 500 disposed at the light emitting side of the reflective display panel 200.
Alternatively, as shown in fig. 14, the reflective display panel 200 includes: the liquid crystal display panel comprises a color film substrate 201, an array substrate 202 and a liquid crystal layer 203 located between the color film substrate 201 and the array substrate 202. The pixel electrodes disposed in the array substrate 202 are made of a metal material with high reflectivity.
In summary, the display device provided in the embodiment of the invention includes: angle adjuster, reflective display panel, optical detector and control assembly. The angle regulator can detect the angle information of the light with the strongest light intensity in the ambient light incident on the display device, and the control assembly can control the transparent electrode structure in the angle regulator to load the voltage for controlling the deflection of the liquid crystal layer according to the angle information so that the angle regulator can regulate the emergent angle of the light with the strongest light intensity, the light with the strongest light intensity emitted from the display device can enter the visual field of a user more, and the reflectivity of the display device is improved. Furthermore, the angle regulator can make the light rays incident on the reflective display device from different incident angles, and after the light rays are emergent from the emergent surface of the reflective display device, the emergent angles of the emergent light rays are smaller, so that the use limitation of the reflective display device is effectively reduced, and the display effect of the reflective display device is better under the irradiation of different ambient light rays.
Embodiments of the present application also provide a method for manufacturing an angle adjuster, which is used to manufacture the angle adjuster shown in fig. 1, and the method may include:
a liquid crystal layer is formed between two transparent substrates parallel to each other to form a sealed cavity.
And a transparent electrode structure is formed on at least one of the two transparent substrates, and the transparent electrode structure is configured and loaded with voltage for controlling the deflection of the liquid crystal layer, so that an emergent angle is smaller than an incident angle after any light ray passes through the sealed cavity.
Referring to fig. 15, fig. 15 is a flowchart of a method for manufacturing an angle adjuster according to an embodiment of the present disclosure, where the method is used to manufacture the angle adjuster shown in fig. 4, and the method may include:
Optionally, the two transparent substrates include: a first transparent substrate and a second transparent substrate. The orthographic projection of the transparent electrode structure formed on the second transparent substrate on the first transparent substrate is not overlapped with the orthographic projection of the transparent electrode structure formed on the first transparent substrate. The transparent electrode structure may be made of: indium Tin Oxide (ITO) or Indium Zinc Oxide (IZO).
For example, a transparent electrode film may be formed on each transparent substrate by any one of various methods such as deposition, coating, sputtering, etc., and then a patterning process may be performed on the transparent electrode film to form a transparent electrode structure. The one-time composition process comprises the following steps: photoresist coating, exposure, development, etching and photoresist stripping.
For example, an alignment film for wrapping the transparent electrode structure may be formed on a transparent substrate on which the transparent electrode structure is formed.
And 1503, sequentially forming a sealant frame and a liquid crystal layer on the alignment film of the first transparent substrate.
For example, a sealant frame may be formed on the alignment film of the first transparent substrate, and a cavity space may be formed between the sealant frame and the first transparent substrate; liquid crystal can then be injected into the cavity space so that a liquid crystal layer can be formed in the cavity space.
For example, the second transparent substrate may be buckled on the first transparent substrate to form a sealing frame, so that a sealed cavity may be formed. It should be noted that after the second transparent substrate is fastened on the first transparent substrate, it is necessary to ensure that the alignment film of the second transparent substrate is opposite to the alignment film of the first transparent substrate.
It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working principle of the angle adjuster described above may refer to the corresponding parts in the foregoing embodiments of the structure of the angle adjuster, and details are not repeated herein.
Referring to fig. 16, fig. 16 is a flowchart of an angle adjustment method according to an embodiment of the present invention, where the method is applied to the display device shown in fig. 11 or fig. 14, and the method may include:
In the embodiment of the invention, the angle detector in the display device can detect the angle information of the light ray with the strongest light intensity in the ambient light rays incident on the display device. The control component in the display device may acquire angle information detected by the angle detector. Optionally, the angle information includes: the angle information of the incident angle of the light with the strongest light intensity entering the light-emitting surface of the display device, and the direction information of the light with the strongest light intensity entering the display device.
For example, the control component in the display device may determine a target first electrode among the plurality of first electrodes and a target second electrode among the plurality of second electrodes according to the angle information, and control the target first electrode and the target second electrode to apply a voltage to deflect the liquid crystal cell in the liquid crystal layer between the two transparent substrates.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working principle of the angle adjusting method described above may refer to the corresponding parts in the foregoing embodiments of the structure of the display device, and will not be described herein again.
An embodiment of the present invention further provides a computer-readable storage medium, which is a non-volatile computer-readable storage medium, and when instructions in the computer-readable storage medium are executed by a control component of a display device, the control component is enabled to execute the angle adjusting method described in steps 1601 to 1602 above. For example, the non-volatile computer-readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.
An embodiment of the present application further provides a control assembly, where the control assembly includes: the system comprises at least one processor, a memory and at least one bus, wherein the memory is connected with the processor through the bus; the at least one processor may be each a CPU, the processor configured to execute instructions stored in the memory; the processor executes the instructions to implement the angle adjustment method described in steps 1601 to 1602.
It will be understood by those skilled in the art that all or part of the steps for implementing the above embodiments may be implemented by hardware, or may be implemented by a program instructing relevant hardware, where the program may be stored in a computer-readable storage medium, and the above-mentioned storage medium may be a read-only memory, a magnetic disk or an optical disk, etc.
The above description is only exemplary of the present invention and should not be taken as limiting, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An angle adjuster, comprising:
a sealed chamber, the sealed chamber comprising: the liquid crystal display panel comprises two transparent substrates which are parallel to each other and a liquid crystal layer arranged between the two transparent substrates;
at least one of the two transparent substrates is provided with a transparent electrode structure, and the transparent electrode structure is configured and loaded with voltage for controlling the deflection of the liquid crystal layer, so that an emergent angle is smaller than an incident angle after any light ray passes through the sealed cavity;
the two transparent substrates include: a first transparent substrate and a second transparent substrate, each of the transparent substrates having a transparent electrode structure disposed thereon,
the orthographic projection of the transparent electrode structure arranged on the second transparent substrate on the first transparent substrate is not overlapped with the orthographic projection of the transparent electrode structure arranged on the first transparent substrate;
every the transparent substrate is the rectangle, every the transparent substrate all can by two diagonal divisions of transparent substrate set up the region into four electrodes, four electrodes set up the region and include: the electrode structure comprises a first electrode setting area, a second electrode setting area, a third electrode setting area and a fourth electrode setting area, wherein the first electrode setting area and the third electrode setting area are oppositely arranged, and the second electrode setting area and the fourth electrode setting area are oppositely arranged;
the transparent electrode structure in the first transparent substrate includes: a plurality of first electrodes provided at intervals in each electrode providing region;
the transparent electrode structure in the second transparent substrate includes: a plurality of second electrodes provided at intervals in each electrode providing region;
the center of the transparent substrate coincides with the origin of a coordinate system, the coordinate system comprises an x axis and a y axis which are perpendicular to each other, when the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate is parallel to the direction of the x axis, voltage for controlling the deflection of the liquid crystal layer is loaded on the transparent electrode structures in the second electrode arrangement area and the fourth electrode arrangement area, and after the light ray incident from the first transparent substrate passes through the sealed cavity, the emergent angle is smaller than the incident angle; or the like, or a combination thereof,
when the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate is parallel to the direction of the y axis, the transparent electrode structures in the first electrode arrangement region and the third electrode arrangement region load voltage for controlling the deflection of the liquid crystal layer, and after the light ray incident from the first transparent substrate passes through the sealed cavity, the emergent angle is smaller than the incident angle; or the like, or, alternatively,
the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate is not parallel to the direction of the x axis and is not parallel to the direction of the y axis, voltage for controlling the deflection of the liquid crystal layer is loaded on the transparent electrode structure in each electrode arrangement area, and the emergent angle of the light ray incident from the first transparent substrate is smaller than the incident angle after the light ray passes through the sealed cavity;
each of the electrode arrangement regions is a triangular region,
in the first transparent substrate, the arrangement direction of the plurality of first electrodes in each triangular region is perpendicular to a first boundary, and the first boundary is a common boundary with the first transparent substrate in the triangular region;
in the second transparent substrate, the arrangement direction of the plurality of second electrodes in each triangular region is perpendicular to a second boundary, and the second boundary is a common boundary with the second transparent substrate in the triangular region;
in each of the electrode disposing regions, sizes of the plurality of first electrodes or the plurality of second electrodes sequentially arranged in a direction from a boundary of the transparent substrate to a center of the transparent substrate are sequentially reduced.
2. The angle adjuster according to claim 1, wherein the liquid crystal monomer in the liquid crystal layer is a positive liquid crystal monomer or a negative liquid crystal monomer.
3. A method of manufacturing an angle adjuster, the method comprising:
forming a liquid crystal layer between two transparent substrates parallel to each other to form a sealed cavity;
a transparent electrode structure is formed on at least one of the two transparent substrates, and the transparent electrode structure is configured to load a voltage for controlling the deflection of the liquid crystal layer, so that an exit angle of any light ray is smaller than an incident angle after the light ray passes through the sealed cavity;
the two transparent substrates include: a first transparent substrate and a second transparent substrate, each of the transparent substrates having a transparent electrode structure disposed thereon,
the orthographic projection of the transparent electrode structure arranged on the second transparent substrate on the first transparent substrate is not overlapped with the orthographic projection of the transparent electrode structure arranged on the first transparent substrate;
every the transparent substrate is the rectangle, every the transparent substrate all can by two diagonal divisions of transparent substrate set up the region into four electrodes, four electrodes set up the region and include: the electrode structure comprises a first electrode setting area, a second electrode setting area, a third electrode setting area and a fourth electrode setting area, wherein the first electrode setting area and the third electrode setting area are oppositely arranged, and the second electrode setting area and the fourth electrode setting area are oppositely arranged;
the transparent electrode structure in the first transparent substrate includes: a plurality of first electrodes provided at intervals in each electrode providing region;
the transparent electrode structure in the second transparent substrate includes: a plurality of second electrodes provided at intervals in each electrode providing region;
the center of the transparent substrate coincides with the origin of a coordinate system, the coordinate system comprises an x axis and a y axis which are perpendicular to each other, when the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate is parallel to the direction of the x axis, voltage for controlling the deflection of the liquid crystal layer is loaded on the transparent electrode structures in the second electrode arrangement area and the fourth electrode arrangement area, and after the light ray incident from the first transparent substrate passes through the sealed cavity, the emergent angle is smaller than the incident angle; or the like, or, alternatively,
when the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate is parallel to the direction of the y axis, the transparent electrode structures in the first electrode arrangement region and the third electrode arrangement region are loaded with voltage for controlling the deflection of the liquid crystal layer, and after the light ray incident from the first transparent substrate passes through the sealed cavity, the emergent angle is smaller than the incident angle; or the like, or, alternatively,
when the orthographic projection of the direction of the light ray incident from the first transparent substrate on the transparent substrate is not parallel to the direction of the x axis and is not parallel to the direction of the y axis, applying a voltage for controlling the deflection of the liquid crystal layer to the transparent electrode structure in each electrode arrangement area, wherein the emergent angle is smaller than the incident angle after the light ray incident from the first transparent substrate passes through the sealed cavity;
each of the electrode arrangement regions is a triangular region,
in the first transparent substrate, the arrangement direction of the plurality of first electrodes in each triangular region is perpendicular to a first boundary, and the first boundary is a common boundary with the first transparent substrate in the triangular region;
in the second transparent substrate, the arrangement direction of the plurality of second electrodes in each triangular region is perpendicular to a second boundary, and the second boundary is a common boundary with the second transparent substrate in the triangular region;
in each of the electrode disposing regions, sizes of the plurality of first electrodes or the plurality of second electrodes sequentially arranged in a direction from a boundary of the transparent substrate to a center of the transparent substrate are sequentially reduced.
4. A display device, comprising:
a reflective display panel;
the optical detector is used for detecting the angle information of the light ray with the strongest light intensity in the ambient light rays incident on the display device;
an angle adjuster disposed on a light-emitting surface of the reflective display panel, the angle adjuster being as claimed in claim 1 or 2;
and the transparent electrode structure in the angle adjuster and the optical detector are connected with the control component, and the control component is used for: and controlling the transparent electrode structure to load a voltage for controlling the deflection of the liquid crystal layer according to the angle information so that the emergent angle is smaller than the incident angle after the light with the strongest light intensity passes through the display device.
5. The display device according to claim 4,
the angle information includes: the angle information of the incident angle of the light with the strongest light intensity entering the light-emitting surface of the display device and the direction information of the light with the strongest light intensity entering the display device.
6. A display device as claimed in claim 4 or 5, characterised in that each of the first electrodes and each of the second electrodes is connected to the control means for: and determining a target first electrode in the plurality of first electrodes and a target second electrode in the plurality of second electrodes according to the angle information, and controlling the target first electrode and the target second electrode to be loaded with voltage so as to deflect the liquid crystal monomer in the liquid crystal layer between the two transparent substrates.
7. An angle adjustment method applied to the display device according to any one of claims 4 to 6, the method comprising:
acquiring angle information of light with the strongest light intensity in ambient light incident on the display device;
and controlling the transparent electrode structure to load a voltage for controlling the deflection of the liquid crystal layer according to the angle information so that an emergent angle is smaller than an incident angle after the light with the strongest light intensity passes through the display device.
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