CN110764324B - Display device and driving method thereof - Google Patents

Display device and driving method thereof Download PDF

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Publication number
CN110764324B
CN110764324B CN201911030158.2A CN201911030158A CN110764324B CN 110764324 B CN110764324 B CN 110764324B CN 201911030158 A CN201911030158 A CN 201911030158A CN 110764324 B CN110764324 B CN 110764324B
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China
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liquid crystal
display device
layer
light
semi
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CN201911030158.2A
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CN110764324A (en
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黄东晨
苏赞加
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Huizhou China Star Optoelectronics Technology Co Ltd
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Huizhou China Star Optoelectronics Technology Co Ltd
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Priority to CN201911030158.2A priority Critical patent/CN110764324B/en
Priority to PCT/CN2019/127618 priority patent/WO2021082236A1/en
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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
    • 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
    • G02F1/13306—Circuit arrangements or driving methods for the control of single liquid crystal cells
    • 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
    • G02F1/133555—Transflectors
    • 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
    • G02F1/133555—Transflectors
    • G02F1/133557—Half-mirrors

Abstract

The application discloses a display device and a driving method thereof. The display device includes: a first liquid crystal cell including a first liquid crystal layer; a second liquid crystal cell disposed opposite to the first liquid crystal cell, including a second liquid crystal layer; the first liquid crystal layer and the second liquid crystal layer are different in type. This application is through setting up the second liquid crystal cell on first liquid crystal cell, and the laser irradiation of certain light intensity is when display device, and the second liquid crystal layer that is illuminated the region and corresponds is in and shuts off unordered state, and the diffuse reflection takes place to jet out display device through the liquid crystal molecule in this region, has weakened the mirror reflection of laser on display device, has increased the visual angle of laser, has improved user experience.

Description

Display device and driving method thereof
Technical Field
The present disclosure relates to display devices, and particularly to a display device and a driving method thereof.
Background
Liquid Crystal Displays (LCDs) are the most widely used Display products in the market at present, and have the advantages of mature production process technology, high product yield, relatively low production cost and high market acceptance.
The reflectivity of the surface of the liquid crystal display is high, so when laser emitted by the laser pen irradiates the surface of the liquid crystal display, mirror reflection occurs on the surface of the liquid crystal display, the visual angle of the laser in each direction is reduced, and the user experience is reduced.
Therefore, a display device and a driving method thereof are needed to solve the above technical problems.
Disclosure of Invention
The application provides a display device and a driving method thereof, which aim to solve the technical problem that the visual angle of laser on a liquid crystal display device is small.
In order to solve the above problems, the technical solution provided by the present application is as follows:
a display device, comprising:
the liquid crystal display panel comprises a first liquid crystal box and a second liquid crystal box, wherein the first liquid crystal box comprises a first array substrate, a color film layer arranged opposite to the first array substrate, and a first liquid crystal layer positioned between the first array substrate and the color film layer;
the second liquid crystal box is arranged opposite to the first liquid crystal box and comprises a driving circuit board close to the first liquid crystal box, a cover plate far away from the first liquid crystal box and a second liquid crystal layer positioned between the driving circuit and the cover plate;
the first liquid crystal layer and the second liquid crystal layer are different in type.
In the display device of the present application, the material of the first liquid crystal layer includes nematic liquid crystal;
the material of the second liquid crystal layer comprises polymer dispersed liquid crystal.
In the display device of the present application, the display device further includes a photosensor for recognizing an external light source irradiated on the second liquid crystal layer.
In the display device of the present application, the display device further comprises a semi-diffusely reflective semi-transparent layer located between the first and second liquid crystal cells;
the semi-diffuse reflection semi-transparent layer transmits incident light close to one side of the first liquid crystal box and diffusely reflects incident light far away from one side of the first liquid crystal box.
In the display device of the present application, the semi-diffuse reflective semi-transparent layer is provided as a whole layer.
In the display device of the application, an orthographic projection of the semi-diffuse reflection semi-transparent layer on the color film substrate is located in a shading layer of the color film substrate.
In the display device of the present application, the semi-diffusely reflective semi-transparent layer includes diffusely reflective protrusions on a side thereof remote from the first liquid crystal cell.
A driving method using a display device of the present application, comprising:
scanning the target display device to obtain a first light intensity value of a first light source;
when the first light intensity value is larger than a first threshold value, outputting a first position signal and a first control signal of a first light source at a first position of the liquid crystal layer so as to enable the liquid crystal corresponding to the first position to be in a non-working state;
and when the first light intensity value is smaller than a first threshold value, outputting a second control signal to enable the liquid crystal corresponding to the first position to be in a working state.
In a driving method using a display device of the present application, the step of obtaining a light intensity value of the first light source includes:
scanning the target display device by using a photosensitive device to acquire a first optical signal of a first light source;
calculating a first light intensity value of the first light source according to the first light signal;
and outputting the first light intensity value to a processor of the display device.
In a driving method using the display device of the present application, the first light source is one of laser, ultraviolet light, or infrared light.
Has the advantages that: this application is through setting up the second liquid crystal cell on first liquid crystal cell, and the laser irradiation of certain light intensity is when display device, and the second liquid crystal layer that is illuminated the region and corresponds is in and shuts off unordered state, and the diffuse reflection takes place to jet out display device through the liquid crystal molecule in this region, has weakened the mirror reflection of laser on display device, has increased the visual angle of laser, has improved user experience.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the application, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a first block diagram of a display device according to the present application;
FIG. 2 is a schematic diagram illustrating a first structural effect of the display device of the present application;
FIG. 3 is a second structural view of the display device of the present application;
FIG. 4 is a partial perspective view of a second structure of a display panel according to the present application;
FIG. 5 is a partial view of a third structural diagram of a display panel according to the present application;
FIG. 6 is a partial view of a fourth structural diagram of a display panel according to the present application;
FIG. 7 is a schematic diagram illustrating the effects of the second to fourth structures of the display device of the present application;
FIG. 8 is a flow chart of a driving method of a display device according to the present application.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings, which are included to illustrate specific embodiments that can be implemented by the application. Directional phrases used in this application, such as [ upper ], [ lower ], [ front ], [ rear ], [ left ], [ right ], [ inner ], [ outer ], [ side ], etc., refer only to the directions of the attached drawings. Accordingly, the directional terminology is used for purposes of illustration and understanding, and is in no way limiting. In the drawings, elements having similar structures are denoted by the same reference numerals.
In the prior art, the reflectivity of the surface of the liquid crystal display is high, so that when laser emitted by the laser pen irradiates the surface of the liquid crystal display, mirror reflection occurs on the surface of the liquid crystal display, the visual angle of the laser in each direction is reduced, and the user experience is reduced. Based on the technical problem, the present application provides a display device and a driving method thereof.
Referring to fig. 1 to 7, the display device 100 includes:
a first liquid crystal cell 200 including a first array substrate 210, a color film layer 230 disposed opposite to the first array substrate 210, and a first liquid crystal layer 220 between the first array substrate 210 and the color film layer 230;
a second liquid crystal cell 300 disposed opposite to the first liquid crystal cell 200, including a driving circuit board 310 disposed adjacent to the first liquid crystal cell 200, a cover plate 330 disposed apart from the first liquid crystal cell 200, and a second liquid crystal layer 320 between the driving circuit 310 and the cover plate 330;
wherein the first liquid crystal layer 220 and the second liquid crystal layer 320 are different in kind.
This application is through setting up the second liquid crystal cell on first liquid crystal cell, and the laser irradiation of certain light intensity is when display device, and the second liquid crystal layer that is illuminated the region and corresponds is in and shuts off unordered state, and the diffuse reflection takes place to jet out display device through the liquid crystal molecule in this region, has weakened the mirror reflection of laser on display device, has increased the visual angle of laser, has improved user experience.
The technical solution of the present application will now be described with reference to specific embodiments.
Example one
Referring to fig. 1, the display device 100 includes:
the first liquid crystal cell 200 includes a first array substrate 210, a color film layer 230 disposed opposite to the first array substrate 210, and a first liquid crystal layer 220 disposed between the first array substrate 210 and the color film layer 230.
The second liquid crystal cell 300, which is disposed opposite to the first liquid crystal cell 200, includes a driving circuit board 310 disposed adjacent to the first liquid crystal cell 200, a cover plate 330 disposed apart from the first liquid crystal cell 200, and a second liquid crystal layer 320 between the driving circuit 310 and the cover plate 330.
Wherein the first liquid crystal layer 220 and the second liquid crystal layer 320 are different in kind.
In this embodiment, the material of the first liquid crystal layer 220 includes nematic liquid crystal. The material of the second liquid crystal layer 320 includes polymer dispersed liquid crystal. When the polymer dispersed liquid crystal is subjected to the action of an electric field, ordered optical axis orientation can be formed, and the liquid crystal layer is in a transparent state; when the electric field is removed, the liquid crystal droplets recover to be free-oriented, the liquid crystal layer changes from a transparent state to an astigmatic state, and the laser incident outside the display device diffusely reflects the laser in the region to the display device, thereby achieving the effect of increasing the visual angle of the laser, as shown in fig. 2.
In this embodiment, the display device 100 further includes a photosensor (not shown) for identifying an external light source irradiated on the second liquid crystal layer 320. The light sensor receives a light signal of an external light source at a certain position, recognizes and calculates light intensity, outputs light intensity information to a processor of the display device, and the processor judges whether to close a liquid crystal electric field irradiated by the external light source at the position and accurately positions a laser irradiation area, so that the haze of the area is increased, and laser is more diffusely reflected in the area to be emitted out of the display device.
In this embodiment, the photosensitive device is disposed between the first liquid crystal cell 200 and the second liquid crystal cell 300. The photosensitive device can better receive the optical signal of the light source.
In this embodiment, the photosensitive device is disposed between the cover plate 330 and the second liquid crystal layer 320. The photosensitive device can receive the light information of the light source more timely, so that the working state of the liquid crystal is changed.
In this embodiment, the photosensitive device is disposed between the first liquid crystal layer 220 and the first array substrate 210. The photosensitive device can receive light signals of the light source and does not influence the normal light emitting operation of the display device.
In this embodiment, the color film layer 230 includes a color resist layer 231 and a light-shielding layer 232. The color resistance layer 231 includes a red color resistance, a green color resistance, or a blue color resistance, which is not limited herein. The light-shielding layer 232 and the color resist layer 231 are disposed in the same layer.
In this embodiment, a polarizer 240 is disposed on the color film layer 230, please refer to fig. 1 specifically.
In this embodiment, the first liquid crystal layer 220 includes a first upper electrode layer 222 on a side away from the first array substrate 210 and a first lower electrode layer 221 on a side close to the first array substrate 210, as shown in fig. 1.
In this embodiment, the second liquid crystal layer 320 includes a second upper electrode layer 322 at a side far away from the first liquid crystal cell 200 and a second lower electrode layer 321 at a side near the first liquid crystal cell 200, as shown in fig. 1.
In this embodiment, the first upper electrode layer 222 includes a first upper electrode and a first upper substrate located on the first upper electrode, and the first lower electrode layer includes a first lower electrode and a first lower substrate located on the first lower electrode.
In this embodiment, the second upper electrode layer 322 includes a second upper electrode and a second upper substrate located on the second upper electrode, and the second lower electrode layer 321 includes a second lower electrode and a second lower substrate located on the second lower electrode.
According to the embodiment, the second liquid crystal box is arranged on the first liquid crystal box, the laser with certain light intensity irradiates the second liquid crystal box, the photosensitive device accurately positions the laser irradiation area through recognizing the light information of the light source, so that the second liquid crystal layer of the irradiation area is in a shutoff disordered state, the haze of the area is increased, the laser is subjected to diffuse reflection through the liquid crystal molecules of the irradiation area to be emitted out of the display device, the laser reaches human eyes, the glare glaring phenomenon is weakened, the diffuse reflection of the laser is enhanced, the visual angle of the laser is increased, and the user experience is improved.
Example two
Referring to fig. 3, the present embodiment is the same as or similar to the first embodiment, except that:
the display device 100 further comprises a semi-diffusely reflective semi-transparent layer 500, the semi-diffusely reflective semi-transparent layer 500 being located between the first liquid crystal cell 200 and the second liquid crystal cell 300.
In this embodiment, the semi-diffuse semi-reflective layer 500 transmits light incident on a side close to the first liquid crystal cell 200 and diffusely reflects light incident on a side away from the first liquid crystal cell 200. When the haze of the second liquid crystal cell 300 is not increased by the laser light, the laser light transmits through the second liquid crystal cell 300, and the semi-diffuse reflection semi-transparent layer 500 can better diffuse the laser light to be emitted out of the display device 100, so as to provide a better visual angle for a user, specifically refer to fig. 3 and 7.
In this embodiment, the semi-diffuse reflective semi-transparent layer 500 is a whole layer. The semi-diffuse reflection semi-transparent layer 500 arranged on the whole layer can save the process without illumination and etching processes, has better diffuse reflection effect and increases the visual angle of a user.
In this embodiment, the orthographic projection of the semi-diffuse reflection semi-transparent layer 500 on the color film layer 230 is located in the light shielding layer 232 of the color film layer 230. The diffuse reflection translucent layer 500 is disposed at a position where the diffuse reflection of the laser light is completed, and at the same time, the transmittance of the laser light to the normal light of the display device 100 is not reduced, so as to ensure the quality of the light of the normal display, as shown in fig. 4.
In this embodiment, the semi-diffusely reflective semi-transparent layer 500 includes diffusely reflective protrusions 510 on a side thereof remote from the first liquid crystal cell 200. The diffuse reflection protrusion 510 can better diffuse the laser light to achieve the effect of increasing the visual angle of the user, as shown in fig. 5.
In this embodiment, the shape of the reflective protrusion 510 may include a hemispherical shape, a pyramid shape, and a cube shape.
In this embodiment, the semi-diffusely reflective semi-transparent layer 500 includes diffusely reflective depressions 520 on a side thereof remote from the first liquid crystal cell 200. The diffuse reflection recess 520 can better diffuse the laser light, so as to increase the visual angle of the user, as shown in fig. 6.
In this embodiment, the shape of the reflective cavity 520 may include a hemispherical shape, a pyramid shape, and a cube shape.
This embodiment makes the laser that sees through the second liquid crystal cell take place diffuse reflection more through setting up half diffuse reflection translucent layer between first liquid crystal cell and second liquid crystal cell, jets out display device, has improved light utilization ratio, has increased the visual angle of laser, has improved user experience.
In the first and second embodiments, the second liquid crystal cell is disposed on the first liquid crystal cell, and the laser with a certain light intensity irradiates the second liquid crystal cell, so that the second liquid crystal layer in the irradiation region is in an off disordered state, the haze in the region is increased, the laser passes through the liquid crystal molecules in the region, is subjected to diffuse reflection, and is emitted out of the display device to reach human eyes, the visual angle of the laser is increased, and the user experience is improved.
Referring to fig. 8, the present application further provides a driving method using the display device 100, including:
s10, scanning the target display device, and obtaining a first light intensity value of the first light source 600.
And S20, when the first light intensity value is larger than the first threshold, outputting a first position signal and a first control signal of the first light source at a first position of the liquid crystal layer, so that the liquid crystal corresponding to the first position is in a non-working state.
And S30, outputting a second control signal when the first light intensity value is smaller than a first threshold value, so that the liquid crystal corresponding to the first position is in a working state.
This application through the drive to the second liquid crystal box, discernment laser irradiation position and light intensity, the liquid crystal that the location needs to change operating condition changes the change of attitude to liquid crystal work, makes the regional haze increase of laser irradiation, and laser takes place diffuse reflection through the liquid crystal molecule in this region and jets out display device, arrives people's eye, has increased user's visual angle, has improved user experience.
The technical solution of the present application will now be described with reference to specific embodiments.
EXAMPLE III
S10, the target display device 100 is scanned, and the first light intensity value of the first light source 600 is obtained.
In this embodiment, the first light source 600 includes one of a laser, an ultraviolet light, or an infrared light, which is not limited herein.
In this embodiment, the step of obtaining the light intensity value of the first light source includes:
s11, scanning the target display apparatus 100 with a photosensitive device, and acquiring a first light signal of the first light source 600.
S12, calculating a first light intensity value of the first light source 600 according to the first light signal.
S13, outputting the first light intensity value to the processor of the display device 100.
In this embodiment, the processor may include a central processing unit of the display device 100 and a microprocessor of the photosensitive device. And are not intended to be limiting herein.
And S20, when the first light intensity value is larger than the first threshold, outputting a first position signal and a first control signal of the first light source at a first position of the liquid crystal layer, so that the liquid crystal corresponding to the first position is in a non-working state.
In the present embodiment, the material of the second liquid crystal layer 320 includes polymer dispersed liquid crystal. When the polymer dispersed liquid crystal is subjected to the action of an electric field, ordered optical axis orientation can be formed, and the liquid crystal layer is in a transparent state; when the electric field is removed, the liquid crystal droplets recover to be free-oriented, the liquid crystal layer changes from a transparent state to an astigmatic state, and the laser incident outside the display device diffusely reflects the laser in the region to the display device, thereby achieving the effect of increasing the visual angle of the laser, as shown in fig. 2.
In this embodiment, the first threshold may be specifically set according to a use scene, and when the first threshold is higher, the semi-diffuse reflection semi-transparent layer 500 may be used to perform diffuse reflection, so as to achieve an effect of increasing a laser visual angle; when the first threshold value is lower, the diffuse reflection of the laser with weaker light intensity can be improved, the visual angle of the laser is increased, and the user experience is improved. The first threshold is not limited herein.
In this embodiment, the method for making the liquid crystal corresponding to the first position in the non-operating state includes changing a potential of the second lower electrode layer 321 corresponding to the first position, and turning off an electric field at the liquid crystal corresponding to the first position. Turning off the electric field at the liquid crystal position corresponding to the first position, so that the liquid crystal corresponding to the first position is in a non-working state, the liquid crystal droplets recover to be in a free orientation state, the liquid crystal layer is changed from a transparent state to an astigmatic state, the haze of the liquid crystal layer is increased, laser is diffusely reflected out of the display device in the area, and the visual angle of the laser is increased, specifically refer to fig. 2.
And S30, outputting a second control signal when the first light intensity value is smaller than a first threshold value, so that the liquid crystal corresponding to the first position is in a working state.
In this embodiment, the method for enabling the liquid crystal corresponding to the first position to be in the working state includes changing a potential of the second lower electrode layer 321 corresponding to the first position, turning on an electric field at the liquid crystal corresponding to the first position, enabling the liquid crystal corresponding to the first position to be in the working state, enabling the liquid crystal to form an ordered optical axis orientation, enabling the liquid crystal layer to be in a transparent state, and enabling the display device to work normally.
In the third embodiment, the laser irradiation position and the light intensity are identified by driving the second liquid crystal cell, the liquid crystal which needs to change the working state is positioned, the working state of the liquid crystal is changed, the haze value is changed, and the laser is diffused and reflected by the liquid crystal molecules in the area to be emitted out of the display device to reach human eyes, so that the visual angle of a user is increased, and the user experience is improved.
The application discloses a display device and a driving method thereof. The display device includes: a first liquid crystal cell including a first liquid crystal layer; a second liquid crystal cell disposed opposite to the first liquid crystal cell, including a second liquid crystal layer; the first liquid crystal layer and the second liquid crystal layer are different in type. This application is through setting up the second liquid crystal cell on first liquid crystal cell, and the laser irradiation of certain light intensity is when display device, and the second liquid crystal layer that is illuminated the region and corresponds is in and shuts off unordered state, and the diffuse reflection takes place to jet out display device through the liquid crystal molecule in this region, has weakened the mirror reflection of laser on display device, has increased the visual angle of laser, has improved user experience.
In summary, although the present application has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present application, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application, so that the scope of the present application shall be determined by the appended claims.

Claims (9)

1. A display device, comprising:
the liquid crystal display panel comprises a first liquid crystal box and a second liquid crystal box, wherein the first liquid crystal box comprises a first array substrate, a color film layer arranged opposite to the first array substrate, and a first liquid crystal layer positioned between the first array substrate and the color film layer;
the second liquid crystal box is arranged opposite to the first liquid crystal box and comprises a driving circuit board close to the first liquid crystal box, a cover plate far away from the first liquid crystal box and a second liquid crystal layer positioned between the driving circuit and the cover plate;
the display device further comprises a photosensitive device, wherein the photosensitive device is used for identifying an external light source irradiating the second liquid crystal layer, the photosensitive device is arranged between the cover plate and the second liquid crystal layer, and the photosensitive device changes the working state of the second liquid crystal layer according to received light information of the external light source; when laser is irradiated on the display device, the second liquid crystal layer corresponding to the irradiated area is in a disordered state, and the laser is subjected to diffuse reflection through liquid crystal molecules in the area and is emitted out of the display device.
2. The display device according to claim 1, wherein a material of the first liquid crystal layer includes nematic liquid crystal;
the material of the second liquid crystal layer comprises polymer dispersed liquid crystal.
3. The display device according to claim 1,
the display device further comprises a semi-diffusely reflective semi-transparent layer positioned between the first liquid crystal cell and the second liquid crystal cell;
the semi-diffuse reflection semi-transparent layer transmits incident light close to one side of the first liquid crystal box and diffusely reflects incident light far away from one side of the first liquid crystal box.
4. A display device as claimed in claim 3, characterized in that the semi-diffusely reflecting semi-transparent layer is provided as a full layer.
5. A display device as claimed in claim 3, wherein the orthographic projection of the semi-diffusely reflective semi-transparent layer on the color film layer is located within the light shield of the color film layer.
6. A display device as claimed in claim 3, wherein the semi-diffusely reflective semi-transparent layer comprises diffusely reflective protrusions on a side facing away from the first liquid crystal cell.
7. A driving method using the display device according to any one of claims 1 to 6,
scanning the target display device to obtain a first light intensity value of a first light source;
when the first light intensity value is larger than a first threshold value, outputting a first position signal and a first control signal of a first light source at a first position of the liquid crystal layer so as to enable the liquid crystal corresponding to the first position to be in a non-working state;
and when the first light intensity value is smaller than a first threshold value, outputting a second control signal to enable the liquid crystal corresponding to the first position to be in a working state.
8. The method of claim 7, wherein the step of obtaining the light intensity value of the first light source comprises:
scanning the target display device by using a photosensitive device to acquire a first optical signal of a first light source;
calculating a first light intensity value of the first light source according to the first light signal;
and outputting the first light intensity value to a processor of the display device.
9. The method for driving a display device according to claim 7, wherein the first light source is one of laser light, ultraviolet light, or infrared light.
CN201911030158.2A 2019-10-28 2019-10-28 Display device and driving method thereof Active CN110764324B (en)

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