CN111308790A - Display panel and control method thereof - Google Patents
Display panel and control method thereof Download PDFInfo
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- CN111308790A CN111308790A CN201911311954.3A CN201911311954A CN111308790A CN 111308790 A CN111308790 A CN 111308790A CN 201911311954 A CN201911311954 A CN 201911311954A CN 111308790 A CN111308790 A CN 111308790A
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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
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K19/00—Liquid crystal materials
- C09K19/52—Liquid crystal materials characterised by components which are not liquid crystals, e.g. additives with special physical aspect: solvents, solid particles
- C09K19/60—Pleochroic dyes
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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
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1339—Gaskets; Spacers; Sealing of cells
- G02F1/13394—Gaskets; Spacers; Sealing of cells spacers regularly patterned on the cell subtrate, e.g. walls, pillars
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1343—Electrodes
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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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
-
- 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
- G02F1/137—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/13712—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 characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering the liquid crystal having negative dielectric anisotropy
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- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
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Abstract
The embodiment of the invention provides a display panel and a control method thereof, wherein the display panel comprises: a first substrate and a second substrate provided to the cassette; the first guide film is arranged on one side of the first substrate facing the second substrate; the second guide film is arranged on one side, facing the first substrate, of the second substrate; a liquid crystal layer disposed between the first and second guide films; the liquid crystal layer includes: a negative liquid crystal and a dichroic dye aligned in the same direction as the negative liquid crystal; the liquid crystal layer is filled with a light absorption heating element; when the negative liquid crystal is lower than the preset temperature, the negative liquid crystal is arranged perpendicular to the plane where the first substrate is located; and the negative liquid crystal is in a liquid state when the negative liquid crystal is higher than or equal to the preset temperature. According to the display panel provided by the embodiment of the invention, the light absorption heating body is arranged in the liquid crystal layer to realize the automatic switching of the display panel between the bright state and the dark state, so that the manual switching through electric control is avoided, and the technical effects of energy conservation and intelligence are achieved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel and a control method thereof.
Background
The light-adjusting glass can be switched between transparent and opaque states by various methods such as electric control, temperature control, light control, and voltage control. Due to various condition limitations, the current common dimming glass is almost electrically controlled dimming glass.
The electrically controlled dimming glass means that when the power supply of the electrically controlled product is turned off, liquid crystal molecules in the electrically controlled dimming glass are in an irregular dispersion state, so that light cannot enter the electrically controlled dimming glass, and the electrically controlled dimming glass has an opaque appearance. When the dimming glass is electrified, the liquid crystal molecules in the dimming glass are arranged in order, light can penetrate through the dimming glass freely, and the dimming glass is in a transparent state instantly. However, the current electrically controlled dimming glass can only realize active control, and has the problem of high energy consumption.
Disclosure of Invention
The invention provides a display panel, which aims to solve the problems that the existing display panel can only carry out active control through electrifying and has high energy consumption when dimming.
One aspect of the present invention provides a display panel including: a first substrate and a second substrate provided to the cassette;
the first guide film is arranged on one side of the first substrate facing the second substrate;
a second guide film disposed on a side of the second substrate facing the first substrate;
a liquid crystal layer disposed between the first and second guide films; the liquid crystal layer includes: a negative liquid crystal and a dichroic dye aligned in the same direction as the negative liquid crystal; a light absorption heating body is filled in the liquid crystal layer;
when the negative liquid crystal is lower than the preset temperature, the negative liquid crystal is arranged perpendicular to the plane where the first substrate is located; and the negative liquid crystal is in a liquid state when the negative liquid crystal is higher than or equal to the preset temperature.
Optionally, the method further comprises:
a first electrode plate disposed between the first substrate and the first guide film;
a second electrode plate disposed between the second substrate and the second guide film;
the retaining wall structures are arranged on two sides of the liquid crystal layer, one end of each retaining wall structure is connected with the first substrate, and the other end of each retaining wall structure is connected with the second substrate;
and the frame sealing glue is arranged on the outer side of the retaining wall structure.
Optionally, a conductor is filled in the frame sealing glue and used for conducting the first electrode plate and the second electrode plate.
Optionally, the outer surface of the retaining wall structure is plated with a conductive metal, so that when the retaining wall structure is electrified, an electric field is formed in the liquid crystal layer.
Optionally, a plurality of spacers are arranged in parallel in the liquid crystal layer, one end of each spacer is in contact with the first guide film, and the other end of each spacer is in contact with the second guide film.
Optionally, the diameter of the light absorbing and heating body is 65nm-125 nm.
Optionally, the light absorbing exothermic body absorbs visible light and infrared light; the light absorbing heat generating body includes: and (4) a nanogold cage.
Optionally, the negative liquid crystal has a clearing point of 55 ℃ to 65 ℃.
Alternatively, the dichroic dye comprises: a black dichroic dye; the mass ratio of the negative liquid crystal to the dichroic dye is 1: (0.8-1.2).
Optionally, the mass of the light-absorbing and heat-generating body is 0.18% -0.22% of the mass sum of the negative liquid crystal and the dichroic dye.
A second aspect of the present invention provides a control method for a display panel, applied to the display panel, including:
when the arrangement direction of the negative liquid crystal and the dichroic dye is vertical to the plane of the first substrate, applying a first voltage to the retaining wall structure to enable the light absorption heating element to move to be in contact with the retaining wall structure, so that the display state of the display panel is realized;
and electrifying the first electrode plate and the second electrode plate to enable the arrangement directions of the negative liquid crystal and the dichroic dye to be parallel to the plane of the first substrate, thereby realizing the dark state of the display panel.
Optionally, the method further comprises:
powering off the first electrode plate and the second electrode plate, and applying a second voltage to the retaining wall structure to uniformly distribute the light absorption heating bodies in the liquid crystal layer;
the second voltage is opposite to the first voltage, and the second voltage is smaller than a preset voltage.
An embodiment of the present invention provides a display panel, including: a first substrate and a second substrate provided to the cassette; the first guide film is arranged on one side of the first substrate facing the second substrate; a second guide film disposed on a side of the second substrate facing the first substrate; a liquid crystal layer disposed between the first and second guide films; the liquid crystal layer includes: a negative liquid crystal and a dichroic dye aligned in the same direction as the negative liquid crystal; a light absorption heating body is filled in the liquid crystal layer; when the negative liquid crystal is lower than the preset temperature, the negative liquid crystal is arranged perpendicular to the plane where the first substrate is located; and the negative liquid crystal is in a disordered state when the temperature is greater than or equal to the preset temperature. According to the display panel provided by the embodiment of the invention, the light absorption heating body is arranged in the liquid crystal layer to realize the automatic switching of the display panel between the bright state and the dark state, so that the manual switching through electric control is avoided, and the technical effects of energy conservation and intelligence are achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention 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 that other drawings can be obtained according to these drawings without inventive labor.
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 5 is a flowchart illustrating steps of a method for controlling a display panel according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
Referring to fig. 1, a schematic structural diagram of a display panel according to an embodiment of the present invention is shown, where the display panel includes:
a first substrate 10 and a second substrate 20 provided to the cassette;
a first guide film 30, wherein the first guide film 30 is arranged on one side of the first substrate 10 facing the second substrate;
a second guide film 40, the second guide film 40 being disposed on a side of the second substrate 20 facing the first substrate;
a liquid crystal layer 50, the liquid crystal layer 50 being disposed between the first and second guide films 30 and 40; the liquid crystal layer 50 includes: a negative liquid crystal 51 and a dichroic dye 52 aligned in the same direction as the negative liquid crystal; a light absorption heating body 53 is filled in the liquid crystal layer 50;
when the negative liquid crystal 51 is lower than a preset temperature, the negative liquid crystal is arranged perpendicular to the plane of the first substrate 10; the negative liquid crystal 51 is in a liquid state when the temperature is greater than or equal to the preset temperature.
In the embodiment of the present invention, the preset temperature includes: clearing point temperature of negative liquid crystal.
Referring to fig. 1, when the negative liquid crystal 51 is at a temperature lower than a predetermined temperature, both the negative liquid crystal and the dichroic dye are aligned perpendicular to the plane of the first substrate 10, and referring to fig. 2, when the negative liquid crystal 51 is at a temperature higher than or equal to the predetermined temperature, the negative liquid crystal is in a liquid state, and the dichroic dye is in a disordered state.
In the embodiment of the present invention, the first substrate 10 is an array (TFT) glass substrate, and the second substrate 20 is a Color Filter (CF) glass substrate.
In the present embodiment, the first guide film 30 and the second guide film 40 are both made of polyimide film (PI). The first and second guide films 30 and 40 are PI films processed to form PI alignment layers, and liquid crystal molecules of the liquid crystal layer are aligned in a predetermined direction and angle.
In the embodiment of the present invention, the negative liquid crystal means that the long axis is perpendicular to the electric field under the action of the electric field. In the embodiment of the invention, in a natural state, the long axis of the negative liquid crystal is parallel to the plane of the first substrate under the action of the guide film, and under the action of the vertical electric field, the long axis is perpendicular to the electric field and is parallel to the plane of the first substrate.
In the embodiment of the present invention, referring to fig. 1, in a natural state, due to the initial alignment of the first and second guide films 30 and 40, the negative liquid crystal 51 is aligned perpendicular to the plane of the first substrate 10, and since the alignment direction of the dichroic dye 52 is always the same as the alignment direction of the negative liquid crystal 51, the display panel is in a transparent state in a natural state.
Referring to fig. 2, when the illumination intensity is strong, the light absorbing and heating element 53 in the liquid crystal layer 50 absorbs natural light and heats up to raise the temperature of the liquid crystal layer, when the temperature rises to the clearing point of the negative liquid crystal, the negative liquid crystal starts to be in a liquid state and is uniformly distributed in the liquid crystal layer, the dichroic dye is in a disordered arrangement, and at this time, the display panel is in a dark state, i.e., an opaque state.
In the embodiment of the invention, the automatic conversion of the transparent state and the dark state of the display panel can be realized through the intensity of the external natural light.
In the present embodiment, the dichroic dye is used to transmit light parallel to the long axis of the dichroic dye, and absorb or partially absorb light not parallel to the long axis of the dichroic dye.
In the embodiment of the present invention, the method further includes: a first electrode plate 60, the first electrode plate 60 being disposed between the first substrate 10 and the first guide film 30;
a second electrode plate 70, the second electrode plate 70 being disposed between the second substrate 30 and the second guide film 40;
and the retaining wall structures 80 are arranged on two sides of the liquid crystal layer 50, one end of each retaining wall structure 80 is connected with the first substrate 10, and the other end of each retaining wall structure 80 is connected with the second substrate 20.
And the frame sealing glue 90 is arranged on the outer side of the retaining wall structure 80.
In the embodiment of the present invention, the material of the first electrode plate 60 and the second electrode plate 70 is ITO (indium tin oxide). After the first electrode plate and the second electrode plate are conducted, an electric field is generated in the liquid crystal layer, and the direction of the electric field is perpendicular to the plane of the first substrate 10.
In the embodiment of the present invention, the sealant 90 is filled with a conductive body for conducting the first electrode plate and the second electrode plate.
The electric conductor is preferably gold balls, the spherical gold balls can be more uniformly distributed in the frame sealing glue, and the electric conductor can also be made of other conductive metal materials.
In the embodiment of the present invention, the retaining wall structures 80 are disposed between the first substrate 10 and the second substrate 20, and are disposed on two sides of the liquid crystal layer 50 perpendicular to the plane of the first substrate; the retaining wall structure can prevent the frame sealing glue from invading the liquid crystal layer to influence the display of the display panel.
In the embodiment of the present invention, the outer surface of the retaining wall structure 80 is plated with a conductive metal, so that when the retaining wall structure is powered on, an electric field is formed in the liquid crystal layer.
Wherein, the conductive metal is made of ITO (indium tin oxide); when the dam structures 80 are energized, the direction of the electric field formed in the liquid crystal layer is parallel to the plane of the first substrate 10, and the dam structures on one side point to the dam structures on the other side.
In the embodiment of the present invention, the light absorbing and heat generating body 53 is a conductive material and can move under the action of an electric field.
In the embodiment of the present invention, referring to fig. 3, when the display panel needs to be manually controlled, the retaining wall structure is powered on, so that the light absorbing and heating element 53 moves to the side of the retaining wall structure under the action of the horizontal electric field and contacts with the retaining wall structure, and the display panel is in a transparent state, i.e., a bright state.
Referring to fig. 4, when the first electrode plate 60 and the second electrode plate 70 are powered on, the liquid crystal layer generates a vertical electric field, the negative liquid crystals are horizontally arranged under the action of the vertical electric field, the corresponding dichroic dyes are also horizontally arranged, and at this time, the display panel is in a dark state, i.e., an opaque state.
The light absorption heating body is arranged on the side of the retaining wall structure, and the light absorption heating body is arranged on the side of the retaining wall structure.
In the embodiment of the present invention, a plurality of spacers 100 are arranged in parallel in the liquid crystal layer, and one end of each spacer 100 is in contact with the first guide film 30, and the other end is in contact with the second guide film 40.
The spacer 100 serves to maintain the cell thickness of the display panel, and to keep the cell thickness of the display panel uniform for each region.
In the embodiment of the invention, the diameter of the light absorbing and heating body is 65nm-125 nm.
In the embodiment of the present invention, the light absorbing exothermic body absorbs visible light and infrared light.
In an embodiment of the present invention, the light absorbing heat emitting body includes: and (4) a nanogold cage.
Wherein, nanometer gold cages with different sizes can be arranged to absorb natural light with different wavelengths.
In the embodiment of the invention, the clearing point of the negative liquid crystal is 55-65 ℃.
Among them, the clearing point of the negative liquid crystal is preferably 60 ℃.
The clearing point is that when the temperature is higher than the clearing point, the negative liquid crystal is changed into transparent liquid with isotropy.
In an embodiment of the present invention, the dichroic dye includes: a black dichroic dye.
Wherein the black dichroic dye can absorb light of any wavelength that is not parallel to the long axis of the black dichroic dye. In the embodiment of the present invention, other dichroic dyes may be selected according to different requirements for absorbing light, and are not limited herein.
In the embodiment of the present invention, the mass ratio of the negative liquid crystal to the dichroic dye is 1: (0.8-1.2).
Wherein the mass ratio of the negative liquid crystal to the dichroic dye is preferably 1: 1.
In the embodiment of the invention, the mass of the light-absorbing heating element is 0.18-0.22% of the sum of the mass of the negative liquid crystal and the mass of the dichroic dye.
In the embodiment of the invention, the added light absorption heating body is required to have small mass, the display effect of the display panel cannot be influenced, and the effect of heating the liquid crystal layer can be achieved.
In the embodiment of the invention, when the display panel is in a bright state, the light transmittance is about 38%, and when the display panel is in a dark state, the light transmittance is 1% -8%.
An embodiment of the present invention provides a display panel, including: a first substrate and a second substrate provided to the cassette; the first guide film is arranged on one side of the first substrate facing the second substrate; a second guide film disposed on a side of the second substrate facing the first substrate; a liquid crystal layer disposed between the first and second guide films; the liquid crystal layer includes: a negative liquid crystal and a dichroic dye aligned in the same direction as the negative liquid crystal; a light absorption heating body is filled in the liquid crystal layer; when the negative liquid crystal is lower than the preset temperature, the negative liquid crystal is arranged perpendicular to the plane where the first substrate is located; and the negative liquid crystal is in a disordered state when the temperature is greater than or equal to the preset temperature. According to the display panel provided by the embodiment of the invention, the light absorption heating body is arranged in the liquid crystal layer to realize the automatic switching of the display panel between the bright state and the dark state, so that the manual switching through electric control is avoided, and the technical effects of energy conservation and intelligence are achieved.
Example two
Referring to fig. 5, a flowchart illustrating steps of a method for controlling a display panel according to a first embodiment of the present invention is applied to an electric field control of a display panel, including:
In the embodiment of the invention, when the electric field is needed to switch and control the bright state and the dark state of the display panel, a first voltage can be applied to the retaining wall structure first, so that a horizontal electric field is formed in the liquid crystal layer, namely, the direction of the electric field is parallel to the plane of the first substrate; under the action of the electric field, the light absorption heating body moves to the side of the retaining wall structure and contacts with the retaining wall structure, and the light absorption heating body does not control the display panel at the moment.
In practical use, because the outer side of the display panel is provided with the shell, the shell can surround the periphery of the display panel, so that the light absorption heating body adsorbed beside the retaining wall structure cannot be illuminated, and then cannot generate heat, and the arrangement of negative liquid crystal and dichroic dye in the liquid crystal layer cannot be influenced, therefore, the step can be realized, and the display panel is automatically controlled by natural light to be switched to a mode controlled by an electric field.
When the light absorption heating body moves to be in contact with the retaining wall structure, the negative liquid crystal is vertical to the plane where the first substrate is located, and at the moment, the display panel is in a transparent state.
In the embodiment of the invention, after the light absorption heating body moves to the side of the retaining wall structure, the first voltage applied to the retaining wall structure is cut off.
In the embodiment of the invention, after the first electrode plate and the second electrode plate are electrified, a vertical electric field is formed between the first electrode plate and the second electrode plate, namely, the direction of the electric field is vertical to the plane where the first substrate is located, the negative liquid crystal deflects under the action of the vertical electric field, the long axis of the negative liquid crystal is vertical to the electric field and is parallel to the plane where the first substrate is located, and at the moment, the display panel is in a dark state, namely, the light transmittance is low.
In the embodiment of the present invention, the method further includes:
powering off the first electrode plate and the second electrode plate, and applying a second voltage to the retaining wall structure to uniformly distribute the light absorption heating bodies in the liquid crystal layer;
the second voltage is opposite to the first voltage, and the second voltage is smaller than a preset voltage.
In the embodiment of the invention, if the display panel needs to be switched from the electric control mode to the natural light control mode, the electrification between the first electrode plate and the second electrode plate is cut off, then a second voltage opposite to the first voltage is applied to the retaining wall structure, and when the second voltage is small, the light absorbing and heating body can be moved into the liquid crystal layer, so that the bright state and the dark state of the display panel can be controlled by the natural light.
The control method of the display panel provided by the embodiment of the invention comprises the following steps: when the arrangement direction of the negative liquid crystal and the dichroic dye is vertical to the plane of the first substrate, applying a first voltage to the retaining wall structure to enable the light absorption heating element to move to be in contact with the retaining wall structure, so that the display state of the display panel is realized; and electrifying the first electrode plate and the second electrode plate to enable the arrangement directions of the negative liquid crystal and the dichroic dye to be parallel to the plane of the first substrate, thereby realizing the dark state of the display panel. The control method of the display panel provided by the embodiment of the invention can realize the free switching of the display panel between the natural light control and the electric field control, and can realize the switching between the dark state and the bright state according to the requirement under the electric field control, thereby realizing the intellectualization of the switching of the display panel.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (12)
1. A display panel, comprising: a first substrate and a second substrate provided to the cassette;
the first guide film is arranged on one side of the first substrate facing the second substrate;
a second guide film disposed on a side of the second substrate facing the first substrate;
a liquid crystal layer disposed between the first and second guide films; the liquid crystal layer includes: a negative liquid crystal and a dichroic dye aligned in the same direction as the negative liquid crystal; a light absorption heating body is filled in the liquid crystal layer;
when the negative liquid crystal is lower than the preset temperature, the negative liquid crystal is arranged perpendicular to the plane where the first substrate is located; and the negative liquid crystal is in a liquid state when the negative liquid crystal is higher than or equal to the preset temperature.
2. The display panel according to claim 1, further comprising:
a first electrode plate disposed between the first substrate and the first guide film;
a second electrode plate disposed between the second substrate and the second guide film;
the retaining wall structures are arranged on two sides of the liquid crystal layer, one end of each retaining wall structure is connected with the first substrate, and the other end of each retaining wall structure is connected with the second substrate;
and the frame sealing glue is arranged on the outer side of the retaining wall structure.
3. The display panel according to claim 2, wherein a conductor is filled in the sealant for conducting the first electrode plate and the second electrode plate.
4. The display panel according to claim 3, wherein the outer surface of the retaining wall structure is plated with a conductive metal for forming an electric field in the liquid crystal layer when the retaining wall structure is energized.
5. The display panel according to claim 1, wherein a plurality of spacers are juxtaposed in the liquid crystal layer, one end of the spacer being in contact with the first guide film and the other end being in contact with the second guide film.
6. The display panel according to any one of claims 1 to 5, wherein the light absorbing heat-generating body has a diameter of 65nm to 125 nm.
7. The display panel according to any one of claims 1 to 5, wherein the light absorbing heat emitting body absorbs visible light and infrared light; the light absorbing heat generating body includes: and (4) a nanogold cage.
8. The display panel according to any one of claims 1 to 5, wherein the clearing point of the negative liquid crystal is 55 ℃ to 65 ℃.
9. The display panel of any of claims 1 to 5, wherein the dichroic dye comprises: a black dichroic dye; the mass ratio of the negative liquid crystal to the dichroic dye is 1: (0.8-1.2).
10. The display panel according to any one of claims 1 to 5, wherein the light-absorbing and heat-generating body has a mass of 0.18% to 0.22% of a sum of the mass of the negative liquid crystal and the dichroic dye.
11. A control method of a display panel, applied to the display panel of claim 4, comprising:
when the arrangement direction of the negative liquid crystal and the dichroic dye is vertical to the plane of the first substrate, applying a first voltage to the retaining wall structure to enable the light absorption heating element to move to be in contact with the retaining wall structure, so that the display state of the display panel is realized;
and electrifying the first electrode plate and the second electrode plate to enable the arrangement directions of the negative liquid crystal and the dichroic dye to be parallel to the plane of the first substrate, thereby realizing the dark state of the display panel.
12. The method of claim 11, further comprising:
powering off the first electrode plate and the second electrode plate, and applying a second voltage to the retaining wall structure to uniformly distribute the light absorption heating bodies in the liquid crystal layer;
the second voltage is opposite to the first voltage, and the second voltage is smaller than a preset voltage.
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| US20020164535A1 (en) * | 1999-12-28 | 2002-11-07 | 3M Innovative Properties Company | Thermal mass transfer donor element |
| US20130064985A1 (en) * | 2011-09-13 | 2013-03-14 | Far Eastern New Century Corporation | Method for making a retarder |
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| CN109496278A (en) * | 2017-05-08 | 2019-03-19 | 京东方科技集团股份有限公司 | Display base plate, liquid crystal display panel, liquid crystal display device and its operating method |
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