CN114967218A - Double-sided display screen and display - Google Patents
Double-sided display screen and display Download PDFInfo
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- CN114967218A CN114967218A CN202210744346.7A CN202210744346A CN114967218A CN 114967218 A CN114967218 A CN 114967218A CN 202210744346 A CN202210744346 A CN 202210744346A CN 114967218 A CN114967218 A CN 114967218A
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133514—Colour filters
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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
- G02F1/1334—Constructional arrangements; Manufacturing methods based on polymer dispersed liquid crystals, e.g. microencapsulated liquid crystals
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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
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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Abstract
A double-sided display screen comprises a first color modulation layer, a second color modulation layer, a first substrate, a second substrate and a third substrate; the first substrate, the first color modulation layer, the second substrate, the second color modulation layer and the third substrate are sequentially stacked; the first color adjusting layer and the second color adjusting layer are respectively used for displaying different colors, so that light rays irradiated onto the first substrate and the third substrate from the outside respectively present colors corresponding to the first color adjusting layer and the second color adjusting layer when being reflected by the first substrate and the third substrate. The full-color double-sided display with low power consumption can be realized by the double-sided display screen, the reflected light is soft, the structure is light and thin, and the production cost is reduced. The invention also provides a display using the double-sided display screen.
Description
Technical Field
The invention relates to the technical field of liquid crystal display, in particular to a double-sided display screen and a display with the same.
Background
A Liquid Crystal Display (LCD) has many advantages such as a thin body, power saving, and no radiation, and is widely used.
Conventional liquid crystal displays are backlight-structured displays comprising a plurality of optical film layers such as a polarizer, a prism sheet, and a color filter, which are laminated at one time, wherein the polarizer and the color filter are important components indispensable for realizing color display of images. Due to the limitation of the backlight mounted on the conventional liquid crystal display, the existing liquid crystal display device capable of displaying images in color is limited by the reflection plate mounted thereon, and they can display images only on one side.
The information display board of waiting room or large-scale exhibition hall lamp scene at airport waiting room, railway station or at communication trade, government window, financial industry, the information display board that business halls such as traffic industry used all generally need the two sides of display all to show the picture, to current display, adopt two display module set up the mode (please refer to fig. 1) back to back mostly, each LCD all independently corresponds a drive circuit, every display is responsible for the display content of one side only. Such an arrangement would increase the thickness of the display, which would be detrimental to space and power consumption.
In addition, for realizing full-color display, the existing color display usually adopts a color filter film, but the color filter can only allow light rays of partial wave bands to pass through, and the light rays need to be polarized by virtue of the polarizer, the process can not only attenuate the light efficiency, increase the power consumption, but also increase the thickness of the display by virtue of the arrangement of the polarizer and the color filter, and is more unfavorable for the control of the production cost.
Disclosure of Invention
In view of this, an object of the present invention is to provide a dual-sided display panel, which can realize full-color dual-sided display with low power consumption, soft reflected light, light and thin structure, and reduce production cost.
The invention provides a double-sided display screen, which is characterized by comprising: the color filter comprises a first color modulation layer, a second color modulation layer, a first substrate, a second substrate and a third substrate; the first substrate, the first color modulation layer, the second substrate, the second color modulation layer and the third substrate are sequentially stacked;
the first color adjusting layer and the second color adjusting layer are respectively used for displaying different colors, so that light rays irradiated to the first substrate and the third substrate from the outside respectively show colors corresponding to the first color adjusting layer and the second color adjusting layer when being reflected by the first substrate and the third substrate.
In an embodiment, the first color modulation layer includes a first electrode, a second electrode, and a first pixel layer sandwiched between the first electrode and the second electrode, the first pixel layer includes a plurality of first pixel spaces arranged in an array, and a first liquid crystal capsule is disposed in each first pixel space, and is configured to generate a predetermined color under an electric field applied by the first electrode and the second electrode, and to display the color through the first electrode and the first substrate.
In an embodiment, the first liquid crystal capsule includes a first core material and a first wall material, the first core material is used for changing the color of the transmitted light and controlling the amount of the transmitted light to form a preset color light, and the first wall material is used for moving under the action of an electric field to draw the first liquid crystal capsule to be close to the first substrate.
In one embodiment, the first core material of the first liquid crystal capsule comprises a chiral agent for changing the transmission amount of the color mixed liquid crystal, the color mixed liquid crystal for controlling the color of light, and ionized water for dispersing the color mixed liquid crystal; the first wall material comprises diisocyanate; the first liquid crystal capsules comprise a plurality of kinds of first liquid crystal capsules which respectively show different colors, and the number of the first liquid crystal capsules of each color is equal.
In an embodiment, the first pixel space further comprises a first type of electrophoretic particles, the first type of electrophoretic species comprising the first liquid crystal capsules of at least one color and a first charged medium.
In an embodiment, the second color modulation layer includes a third electrode, a fourth electrode, and a second pixel layer interposed between the third electrode and the fourth electrode, the second pixel layer includes a plurality of second pixel spaces arranged in an array, and a second liquid crystal capsule is disposed in the second pixel space and used for generating a predetermined color under the action of an electric field applied by the third electrode and the fourth electrode and displaying the color through the fourth electrode and the third substrate.
In one embodiment, the second liquid crystal capsule comprises a second core material and a second wall material, the second core material is used for changing the color of incident light and controlling the quantity of the incident light to form preset color light, the second wall material is used for moving under the action of an electric field to draw the second liquid crystal capsule to be close to the third substrate, the second core material of the second liquid crystal capsule comprises a chiral agent for changing the transmission quantity of color mixed liquid crystal, color mixed liquid crystal for controlling the color of light, and ionized water for dispersing the color mixed liquid crystal; the second wall material comprises diisocyanate.
In an embodiment, the second pixel space further comprises a second type of electrophoretic particles, the second type of electrophoretic species comprising at least one color of the second liquid crystal capsules and a second charged medium.
In an embodiment, the second liquid crystal capsules comprise a plurality of kinds of second liquid crystal capsules respectively presenting different colors, and the number of the second liquid crystal capsules of each color is equal.
The invention also provides a display, which comprises the double-sided display screen, the outer frame, the circuit board and the power supply, wherein the double-sided display screen, the circuit board and the power supply are accommodated in the outer frame, and the circuit board and the power supply are electrically connected with the double-sided display screen and are respectively used for providing control signals and working voltage for the double-sided display screen.
According to the double-sided display screen provided by the invention, the light quantity adjustment and the color control are carried out on the incident light which passes through the first substrate and the third substrate through the first color modulation layer and the second color modulation layer, so that the light reflected by the first substrate and the third substrate generates a preset color according to the first color modulation layer and the second color modulation layer, and the first liquid crystal capsule and the second liquid crystal capsule which are filled in the first color modulation layer and the second color modulation layer comprise the first core material and the second core material with colors, so that the first liquid crystal capsule and the second liquid crystal capsule not only have the function of controlling the light quantity, but also can endow the reflected light with different colors. The double-sided color development effect can be achieved only by using the two color modulation layers and the three substrates, at least six components such as backlight sources, polarizing plates, color filter films and the like of two displays in a double-sided display screen structure in the prior art are omitted, and only the power consumption of one display needs to be accessed, so that the double-sided display screen is lighter and thinner, the power consumption is lower, and the production and manufacturing cost is reduced. In addition, the invention adopts natural light as an incident light source, the light reflected to human eyes is also natural light, the light is soft, and the invention has no damage to human bodies.
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 embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a conventional dual-sided display.
Fig. 2 is a schematic cross-sectional view of a dual-sided display panel according to a first embodiment of the present invention.
Fig. 3 is a schematic structural diagram of the first pixel layer in fig. 1.
Fig. 4 is a schematic structural diagram of the first liquid crystal capsule in fig. 1.
Fig. 5 is a schematic cross-sectional view of a dual-sided display panel according to a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of the first type of electrophoretic particles in fig. 5.
Fig. 7 is a schematic structural view of the second type of electrophoretic particles in fig. 5.
Detailed Description
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the description of the invention without inventive step, are within the scope of protection of the invention.
In the description of the present invention, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms can be understood as a special case for those of ordinary skill in the art.
The terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", and the like, refer to an orientation or positional relationship that is based on the orientation or positional relationship shown in the drawings, or that is conventionally used in the practice of the invention, and are used for convenience of description and simplicity of illustration only, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present invention.
The terms "first," "second," "third," and the like are used solely to distinguish between similar elements and not to indicate or imply relative importance or a particular order.
The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, including not only those elements listed, but also other elements not expressly listed.
First embodiment
Referring to fig. 2, the present invention provides a dual-sided display panel, including: a first color modulation layer 10, a second color modulation layer 20, a first substrate 30, a second substrate 40, and a third substrate 50; the first substrate 30, the first color modulation layer 10, the second substrate 40, the second color modulation layer 20 and the third substrate 50 are sequentially stacked, and the first substrate 30, the second substrate 40 and the third substrate 50 are all made of transparent materials, preferably glass materials, and can transmit 380-780 nm visible light.
The first and second color modulation layers 10 and 20 are used to display different colors, respectively, and the first and third substrates 30 and 50 are used to receive incident light and reflect light of which the amount of transmitted light and the color are filtered through the first and second color modulation layers 10 and 20, so that the light irradiated from the outside onto the first and third substrates 30 and 50 exhibits colors corresponding to the first and second color modulation layers 10 and 20, respectively, when reflected by the first and third substrates 30 and 50.
Referring to fig. 3, in the present embodiment, the first color modulation layer 10 includes a first electrode 60, a second electrode 70, and a first pixel layer 101 interposed between the first electrode 60 and the second electrode 70, where the first pixel layer 101 includes a plurality of first pixel spaces 11 arranged in an array, and a retaining wall is disposed between two first pixel spaces 11 arranged in a row. The first pixel space 11 is provided with a first liquid crystal capsule 111 for generating a predetermined color under the action of the electric field applied by the first electrode 60 and the second electrode 70 and displaying the color through the first electrode 60 and the first substrate 30.
Specifically, the first electrode 60 and the second electrode 70 are respectively opposed to and closely attached to both sides of the first pixel layer 101, and when a voltage is applied to the first electrode 60 and the second electrode 70, the first pixel layer 101 has an electric field. The first liquid crystal capsule 111 in the first pixel layer 101 is controlled by the voltage applied between the first electrode 60 and the second electrode 70, for example, the first liquid crystal capsule 111 is close to the first substrate 30 under a certain voltage value, and the voltage value applied between the first electrode 60 and the second electrode 70 is preferably in the range of 0-10V.
Referring to fig. 4, the first liquid crystal capsule 111 includes a first core material 111A and a first wall material 111B, and the second core material 211A is filled in the first wall material 111B, wherein the second core material 211A has functions of changing a color of transmitted light and controlling a transmission amount of light, so that natural light incident from the first substrate 30 forms light with a predetermined color, and the first wall material 111B moves under a certain electric field, thereby drawing a certain type of the first liquid crystal capsule 111 to gather at a side of the first pixel layer 101 close to the first substrate 30.
In order to achieve the effect of thinning the double-sided display screen and achieve the function of displaying colors while removing the color filter film and the polarizer, the invention endows the first core material 111A of the first liquid crystal capsule 111 with the functions of filtering light colors and controlling the quantity of transmitted light, in particular to the function of preparing the first core material 111A by using color mixed liquid crystal, a chiral agent and ionized water, wherein, the color mixed liquid crystal is prepared by transparent liquid crystal through dyeing process (the dyeing process is known in the technical field and will not be described herein for avoiding repeated description), the color mixed liquid crystal contains nematic liquid crystal and color dye, under the condition of no interference of environment or other substances, the nematic liquid crystal cannot transmit light, and the chiral agent has chiral groups, the liquid crystal can induce the nematic liquid crystal to form cholesteric phase or chiral nematic liquid crystal, induce the liquid crystal molecules to form spiral arrangement, and change the pitch. In addition, the ionized water is used for dispersing the color mixed liquid crystal and the chiral agent, and is beneficial to the movement of the color mixed liquid crystal and the chiral agent.
The first wall material 111B is preferably a voltage sensitive material, in this embodiment, diisocyanate is used, and the surface of the first wall material 111B is charged, so that when an electric field is applied between the first electrode 60 and the second electrode 70, the first liquid crystal capsule 111 is pulled to move according to the magnitude of the electric field.
The first pixel layer 101 contains a plurality of first liquid crystal capsules 111 which respectively present different colors, in this embodiment, red, blue, green, black and transparent colors are preferred, the first liquid crystal capsules 111 with red, blue and green can present infinite colors according to different proportions, and the number of the first liquid crystal capsules 111 of each color filled in the first pixel layer 101 is equal; in addition, the first wall materials 111B with different charges are adopted for the first liquid crystal capsules 111 with different colors, and the types and the amounts of the charges on the surfaces of the first liquid crystal capsules 111 with different colors are different.
Specifically, each of the first pixel spaces 11 is equally divided into five pixel units, the five pixel units are sequentially arranged in a direction perpendicular to the first substrate 30, each unit is filled with a first liquid crystal capsule 111 of a single color, and the first liquid crystal capsules 111 in each unit are not repeated in color. The first substrate 30 reflects light of a corresponding color according to the color of the first liquid crystal capsule 111 filled in the pixel unit adjacent to the first substrate 30.
When the voltage values between the first electrode 60 and the second electrode 70 are 0V, 2V, 4V, 7V, 10V, the first electrode 60 attracts the first liquid crystal capsule 111 of a single color to gather at the side of the first pixel layer 101 close to the first substrate 30.
Specifically, when the first electrode 60 and the second electrode 70 are subjected to a voltage and the optical axis is perpendicular to the direction of the electric field between the first electrode 60 and the second electrode 70, the first pixel layer 101 cannot transmit light and the first substrate 30 cannot reflect light, and the first substrate 30 displays black; under a certain voltage, when the optical axis is perpendicular to the direction of the electric field between the third electrode 80 and the fourth electrode 90, the second pixel layer 201 can completely transmit light, and at this time, light is completely transmitted without being absorbed, so that the first substrate 30 displays white; when different preset voltages are applied to the first electrode 60 and the second electrode 70, different light quantities can be transmitted according to different electric field sizes, meanwhile, the different light quantities are also filtered by the color mixed liquid crystal, partial wave band light is absorbed, various colors of light can be displayed on the first substrate 30, and the content of the chiral agent determines the reflection color of the formed cholesteric liquid crystal.
In this embodiment, the second color matching layer 20 includes a third electrode 80, a fourth electrode 90, and a second pixel layer 201 sandwiched between the third electrode 80 and the fourth electrode 90, where the second pixel layer 201 includes a plurality of second pixel spaces 21 arranged in an array, and a retaining wall is disposed between two second pixel spaces 21 arranged in a row. The second pixel space 21 is provided with a second liquid crystal capsule 211 for generating a predetermined color under the action of the electric field applied by the third electrode 80 and the fourth electrode 90 and displaying the color through the third electrode 80 and the third substrate 50.
Specifically, the third electrode 80 and the fourth electrode 90 are respectively and oppositely abutted against two sides of the second pixel layer 201, and when a voltage is applied to the third electrode 80 and the fourth electrode 90, the second pixel layer 201 has an electric field. The second liquid crystal capsules 211 in the second pixel layer 201 are controlled by the voltage applied between the third electrode 80 and the fourth electrode 90, for example, the second liquid crystal capsules 211 approach the third substrate 50 under a certain voltage value, and the voltage value applied between the third electrode 80 and the fourth electrode 90 is preferably in the range of 0-10V.
The second liquid crystal capsule 211 comprises a second core material 211A and a second wall material 211B, and the second core material 211A is filled in the second wall material 211B, wherein the second core material 211A has functions of changing the color of transmitted light and controlling the amount of transmitted light, so that natural light incident from the third substrate 50 forms light with a predetermined color, and the second wall material 211B moves under the action of a certain electric field, thereby drawing a certain type of second liquid crystal capsule 211 to gather at a side of the second pixel layer 201 close to the third substrate 50.
In order to achieve the effect of thinning the double-sided display screen and achieve the function of displaying colors while removing the color filter film and the polarizer, the invention endows the second core material 211A of the second liquid crystal capsule 211 with the functions of filtering light colors and controlling the quantity of transmitted light, in particular to the function of preparing the second core material 211A by using color mixed liquid crystal, a chiral agent and ionized water, wherein the color mixed liquid crystal is prepared by dyeing transparent liquid crystal (the dyeing process can be a known technical means in the technical field and is not described herein), the color mixed liquid crystal contains nematic liquid crystal and color dye, under the condition of no interference of environment or other substances, the nematic liquid crystal cannot transmit light, and the chiral agent has chiral groups, the liquid crystal can induce the nematic liquid crystal to form cholesteric phase or chiral nematic liquid crystal, induce the liquid crystal molecules to form spiral arrangement, and change the pitch. In addition, the ionized water is used for dispersing the color mixed liquid crystal and the chiral agent, and is beneficial to the movement of the color mixed liquid crystal and the chiral agent.
The second wall material 211B is preferably a voltage-sensitive material, in this embodiment, diisocyanate is used, and the surface of the second wall material 211B is charged, so that when an electric field is applied between the third electrode 80 and the fourth electrode 90, the second liquid crystal capsule 211 is pulled to move according to the magnitude of the electric field.
The second pixel layer 201 contains a plurality of second liquid crystal capsules 211 respectively presenting different colors, preferably red, blue, green, black and transparent colors in this embodiment, the second liquid crystal capsules 211 with red, blue and green can present an infinite variety of colors according to different proportions thereof, and the number of the second liquid crystal capsules 211 of each color filled in the second pixel layer 201 is equal; in addition, the second liquid crystal capsules 211 with different colors adopt the second wall materials 211B with different charges, and the types and the amounts of the charges on the surfaces of the second liquid crystal capsules 211 with different colors are different.
Specifically, each of the second pixel spaces 21 is equally divided into five pixel units, which are sequentially arranged in a direction perpendicular to the third substrate 50, each unit is filled with the second liquid crystal capsules 211 of a single color, and the colors of the second liquid crystal capsules 211 in the respective units are not repeated. The third substrate 50 reflects light of a corresponding color according to the color of the second capsules 211 filled in the pixel units adjacent to the third substrate 50.
When the voltage between the third electrode 80 and the fourth electrode 90 is 0V, 2V, 4V, 7V, 10V, the third electrode 80 attracts a single second liquid crystal capsule 211 of a certain color to gather on the side of the second pixel layer 201 close to the third substrate 50.
Specifically, when the third electrode 80 and the fourth electrode 90 are applied with a voltage and the optical axis is perpendicular to the direction of the electric field between the third electrode 80 and the fourth electrode 90, the second pixel layer 201 cannot transmit light, and the third substrate 50 cannot reflect light, and the third substrate 50 displays black; under a certain voltage, when the optical axis is perpendicular to the direction of the electric field between the third electrode 80 and the fourth electrode 90, the second pixel layer 201 can completely transmit light, and at this time, light is completely transmitted without being absorbed, so that the third substrate 50 displays white; when different preset voltages are applied between the third electrode 80 and the fourth electrode 90, different light quantities can be transmitted according to different electric field sizes, meanwhile, the different light quantities are also filtered by the color mixed liquid crystal, partial wave band light is absorbed, various colors of light can be displayed on the third substrate 50, and the content of the chiral agent determines the reflection color of the formed cholesteric liquid crystal.
The dual-sided display screen comprises the dual-sided display screen, wherein the first color modulation layer 10 and the second color modulation layer 20 can share one driver or can be independently controlled by different drivers, and specifically, the first color modulation layer 10 and the second color modulation layer 20 can simultaneously display the same picture or different pictures.
Second embodiment
Referring to fig. 5, the sectional structure of the dual-sided display panel of the present embodiment is similar to that of the dual-sided display panel of the first embodiment, and the difference is that in the first color modulation layer 10 and the second color modulation layer 20, no retaining wall is disposed between two adjacent first pixel spaces 11 or between two adjacent second pixel spaces 21, but the first liquid crystal capsules 111 or the second liquid crystal capsules 211 are wrapped to form the first-type electrophoretic particles 100 or the second-type electrophoretic particles 200.
Referring to fig. 6, in the present embodiment, the first color modulation layer 10 includes a plurality of first type electrophoretic particles 100, each first type electrophoretic particle 100 is formed by a first outer wall 113, and two different color first liquid crystal capsules 111 and a first band dielectric 112 contained in the first outer wall 113, the present embodiment totally provides 4 color first liquid crystal capsules 111, which are red, blue, green and black, respectively, wherein any two color first liquid crystal capsules 111 form capsule combinations, and each capsule combination containing two color first liquid crystal capsules 111 is used to form one first type electrophoretic particle 100.
Under the condition that the first type of electrophoretic particles 100 applies the preset electric field between the first electrode 60 and the second electrode 70, the first type of electrophoretic particles 100 including the first liquid crystal capsules 111 with the preset color are driven by the electric field to approach the first substrate 30, and meanwhile, the first liquid crystal capsules 111 with the preset color are also close to one side of the first type of electrophoretic particles 100, which is close to the first substrate 30, so that the first substrate 30 reflects light with the preset color.
Referring to fig. 7, in the present embodiment, the second toner layer 20 includes a plurality of second type electrophoretic particles 200, each of the second type electrophoretic particles 200 is formed by a second outer wall 213, and second liquid crystal capsules 211 and a second charging medium 212 of two different colors contained in the second outer wall 213, the present embodiment is provided with 4 types of second liquid crystal capsules 211, which are respectively red, blue, green and black, wherein any two types of second liquid crystal capsules 211 form capsule combinations, and each of the capsule combinations containing two types of second liquid crystal capsules 211 is used for forming one type of second type electrophoretic particle 200.
The second type of electrophoretic particles 200 includes a second liquid crystal capsule 211 and a second charged medium 212.
Under the condition that the second type of electrophoretic particles 200 applies the preset electric field between the third electrode 80 and the fourth electrode 90, the second type of electrophoretic particles 200 with the second liquid crystal capsules 211 with the preset color are close to the third substrate 50, and meanwhile, the second liquid crystal capsules 211 with the preset color are also close to one side of the second type of electrophoretic particles 200 close to the first substrate 30, so that the third substrate 50 reflects the light with the preset color.
Third embodiment
An embodiment of another aspect of the present application further provides a display, including the dual-sided display screen, the outer frame, the circuit board and the power supply as described in the first embodiment or the second embodiment, the dual-sided display screen, the circuit board and the power supply are accommodated in the outer frame, and the circuit board and the power supply are electrically connected to the dual-sided display screen and are respectively used for providing a control signal and a working voltage to the dual-sided display screen.
Further, the display may comprise a double-sided display screen having a plurality of tinting schemes, for example at least one of the first and second tinting layers 10, 20 is provided by the first embodiment, or at least one of the first and second tinting layers 10, 20 is provided by the second embodiment.
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 changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (10)
1. A dual-sided display screen, comprising: a first color modulation layer (10), a second color modulation layer (20), a first substrate (30), a second substrate (40), and a third substrate (50); the first substrate (30), the first color modulation layer (10), the second substrate (40), the second color modulation layer (20) and the third substrate (50) are sequentially stacked; the first and second color modulation layers (10, 20) are respectively used for displaying different colors, so that light irradiated from the outside onto the first and third substrates (30, 50) respectively exhibits colors corresponding to the first and second color modulation layers (10, 20) when reflected by the first and third substrates (30, 50).
2. A dual-sided display panel as recited in claim 1, wherein the first color modulation layer (10) comprises a first electrode (60), a second electrode (70) and a first pixel layer (101) sandwiched between the first electrode (60) and the second electrode (70), the first pixel layer (101) comprises a plurality of first pixel spaces (11) arranged in an array, and first liquid crystal capsules (111) are disposed in the first pixel spaces (11) for generating a predetermined color under the action of the electric field applied by the first electrode (30) and the second electrode (70) and displaying the predetermined color through the first electrode (60) and the first substrate (30).
3. The dual-sided display panel of claim 2, wherein the first liquid crystal capsule (111) comprises a first core material (111A) and a first wall material (111B), the first core material (111A) is used for changing the color of the transmitted light and controlling the amount of the transmitted light to form a predetermined color light, and the first wall material (111B) is used for moving under the action of the electric field to draw the first liquid crystal capsule (111) close to the first substrate (30).
4. A dual-sided display panel according to claim 3, wherein the first core material (111A) of the first liquid crystal capsule (111) includes a chiral agent for varying the amount of transmission of the color-mixed liquid crystal, the color-mixed liquid crystal for controlling the color of light, ionized water for dispersing the color-mixed liquid crystal; the first wall material (111B) comprises a diisocyanate; the first liquid crystal capsules (111) comprise a plurality of kinds of first liquid crystal capsules (111) respectively presenting different colors, and the first liquid crystal capsules (111) of the various colors are equal in number.
5. A two-sided display screen according to claim 4, characterized in that the first pixel space (11) further comprises first electrophoretic particles (100), the first electrophoretic particles (100) being formed by a first outer wall (113) and the first liquid crystal capsules (111) and the first band dielectric (112) of at least one color enclosed in the first outer wall (113).
6. The double-sided display screen of claim 1, wherein the second color modulation layer (20) comprises a third electrode (80), a fourth electrode (90) and a second pixel layer (201) sandwiched between the third electrode (80) and the fourth electrode (90), the second pixel layer (201) comprises a plurality of second pixel spaces (21) arranged in an array, and a second liquid crystal capsule (211) is disposed in each second pixel space (21) and used for generating a preset color under the action of an electric field applied by the third electrode (80) and the fourth electrode (90) and displaying the preset color through the fourth electrode (90) and the third substrate (50).
7. The dual-sided display panel of claim 6, wherein the second liquid crystal capsule (211) comprises a second core material (211A) and a second wall material (211B), the second core material (211A) is used for changing the color of incident light and controlling the amount of incident light to form a predetermined color light, and the second wall material (211B) is used for moving under the action of the electric field to draw the second liquid crystal capsule (211) close to the third substrate (50); the second core material (211A) of the second liquid crystal capsule (211) comprises a chiral agent for changing the transmission amount of the color mixed liquid crystal, the color mixed liquid crystal for controlling the light color, and the ionized water for dispersing the color mixed liquid crystal; the second wall material (211B) comprises diisocyanate.
8. A dual-sided display screen according to claim 6, characterized in that the second pixel space (21) further comprises second electrophoretic particles (200), the second electrophoretic particles (200) being formed by a second outer wall (213) and the second liquid crystal capsules (211) of at least one color and a second charged medium (213) enclosed in the second outer wall (213).
9. The dual-sided display of claim 7, wherein the second liquid crystal capsules (211) include a plurality of kinds of the second liquid crystal capsules (211) respectively representing different colors, and the number of the second liquid crystal capsules (211) of the respective colors is equal.
10. A display, comprising the dual-sided display panel of any one of claims 1 to 9, a frame, a circuit board and a power supply, wherein the dual-sided display panel, the circuit board and the power supply are accommodated in the frame, and the circuit board and the power supply are electrically connected to the dual-sided display panel and are respectively used for providing a control signal and a working voltage to the dual-sided display panel.
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