CN112859475A - Reflective display panel, display device and working method thereof - Google Patents
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- CN112859475A CN112859475A CN202110208933.XA CN202110208933A CN112859475A CN 112859475 A CN112859475 A CN 112859475A CN 202110208933 A CN202110208933 A CN 202110208933A CN 112859475 A CN112859475 A CN 112859475A
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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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—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
- G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
- G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
- G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
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- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The invention provides a reflective display panel, a display device and a working method thereof, and belongs to the technical field of display. The reflective display panel includes: the driving substrate is provided with a first electrode; a transparent cover plate arranged opposite to the driving substrate; the reflecting structure is positioned on one side of the transparent cover plate facing the driving substrate; the second electrode is positioned on one side of the reflecting structure facing the driving substrate; an ink layer between the second electrode and the first electrode, the ink layer having light absorbing particles of a first polarity disposed therein, the light absorbing particles being movable in the ink layer; a PVDF layer located on the side of the second electrode facing the first electrode. The technical scheme of the invention can reduce the power consumption of the reflective display panel.
Description
Technical Field
The present invention relates to the field of display technologies, and in particular, to a reflective display panel, a display device, and a method for operating the same.
Background
The reflective display uses ambient light for display, does not need a backlight source, has the characteristics of eye protection, low power consumption and the like, and is increasingly popular with consumers at present. The existing reflective display has the problems of no bi-stable state and larger power consumption.
Disclosure of Invention
The present invention is directed to a reflective display panel and a display device, which can reduce power consumption of the reflective display panel.
To solve the above technical problem, embodiments of the present invention provide the following technical solutions:
in one aspect, a reflective display panel is provided, including:
the driving substrate is provided with a first electrode;
a transparent cover plate arranged opposite to the driving substrate;
the reflecting structure is positioned on one side of the transparent cover plate facing the driving substrate;
the second electrode is positioned on one side of the reflecting structure facing the driving substrate;
an ink layer between the second electrode and the first electrode, the ink layer having light absorbing particles of a first polarity disposed therein, the light absorbing particles being movable in the ink layer, the ink layer having a refractive index less than a refractive index of the reflective structure;
the reflective display panel further includes:
a PVDF layer located on the side of the second electrode facing the first electrode.
In some embodiments, the reflective structure is made of a transparent polymer.
In some embodiments, a surface of the reflective structure facing the second electrode is uneven.
In some embodiments, a side surface of the reflective structure facing the second electrode has a plurality of protrusions.
In some embodiments, the protrusions are hemispherical, conical, or prismatic.
In some embodiments, a side surface of the protrusion facing the second electrode has a plurality of sub-protrusions.
In some embodiments, the difference in refractive index between the reflective structure and the ink layer is greater than 0.3.
In some embodiments, the PVDF layer has a thickness of 0.1 to 3 um.
An embodiment of the present invention provides a display device including the reflective display panel as described above.
An embodiment of the present invention provides a working method of a display device, which is applied to the display device described above, and includes:
applying an electrical signal to the first electrode and the second electrode to align an electric dipole of a first polarity in the PVDF layer adjacent to the ink layer, driving the light absorbing particles to move away from the second electrode to cause the display device to display a bright state, and stopping applying the electrical signal to the first electrode and the second electrode, wherein the electric dipole of the first polarity in the PVDF layer remains aligned adjacent to the ink layer and repels the light absorbing particles to cause the display device to continue displaying the bright state;
and applying an electric signal to the first electrode and the second electrode to enable an electric dipole with a second polarity in the PVDF layer to be arranged close to the ink layer side, driving the light-absorbing particles to move towards the second electrode side to enable the display device to display a dark state, stopping applying the electric signal to the first electrode and the second electrode, keeping the electric dipole with the second polarity in the PVDF layer to be arranged close to the ink layer side, and enabling the display device to continuously display the dark state.
The embodiment of the invention has the following beneficial effects:
in the above scheme, a PVDF layer is disposed on a side of the second electrode facing the first electrode, where electric dipoles in the PVDF layer can be orderly arranged under the action of voltage and can still be orderly arranged under the action of no voltage, so that the light-absorbing particles are driven to move in a direction away from the second electrode by applying an electric signal to the first electrode and the second electrode, and the display device continues to display a bright state even though the electric signal is stopped being applied to the first electrode and the second electrode after the display device displays the bright state; after the electric signals are applied to the first electrode and the second electrode to drive the light absorbing particles to move to the side close to the second electrode, so that the display device displays a dark state, even if the electric signals are stopped being applied to the first electrode and the second electrode, the display device still continues to display the dark state, and therefore the display device has bistable state, and the power consumption of the display device can be reduced.
Drawings
FIG. 1 is a schematic diagram of a conventional reflective display panel;
FIG. 2 is a schematic diagram of a reflective display panel reflecting ambient light;
FIG. 3 is a schematic diagram of a reflective display panel according to an embodiment of the present invention;
FIG. 4 is a schematic representation of the electrical dipole ordering under voltage for a PVDF layer according to an embodiment of the present invention;
fig. 5-12 are schematic diagrams illustrating the operation of the reflective display panel according to the embodiment of the invention.
Reference numerals
1 drive substrate
2 light-absorbing particles
3 ink layer
4 second electrode
5 reflective structure
6 transparent cover plate
7PVDF layer
71 electric dipole
81. 82 electrode
Detailed Description
In order to make the technical problems, technical solutions and advantages to be solved by the embodiments of the present invention clearer, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the conventional reflective display panel includes a driving substrate 1 and a transparent cover 6, which are oppositely disposed, a reflective structure 5 and a transparent second electrode 4 are disposed on one side of the transparent cover 6 facing the driving substrate 1, a first electrode is disposed on the driving substrate 1, an ink layer 3 is disposed between the first electrode and the second electrode, the ink layer 3 includes light-absorbing particles 2, and the light-absorbing particles 2 have polarity and can move under the action of an electric field; wherein, the refractive index of the reflective structure 5 is relatively high, and the refractive index of the ink layer 3 is relatively low, so that the reflective structure 5 and the ink layer 3 have refractive index difference; if the light absorbing particles 2 in the ink layer 3 are far away from the second electrode 4, as shown by the dotted line in fig. 2, the external ambient light can be totally reflected at the interface between the reflective structure 5 and the ink layer 3, and the reflective display panel realizes bright state display; if the light absorbing particles 2 in the ink layer 3 are adsorbed on the surface of the second electrode 4, the external ambient light will be directly absorbed, and the reflective display panel realizes dark state display.
However, in the reflective display panel shown in fig. 1, it is necessary to apply an electrical signal to the electrodes all the time, and if no electrical signal is applied to the electrodes, the bright state display or the dark state display cannot be maintained.
Embodiments of the present invention provide a reflective display panel and a display device, which can reduce power consumption of the reflective display panel.
An embodiment of the present invention provides a reflective display panel, as shown in fig. 3, including:
a driving substrate 1 on which a first electrode is disposed;
a transparent cover plate 6 disposed opposite to the drive substrate 1;
a reflecting structure 5 positioned on one side of the transparent cover plate 6 facing the driving substrate 1;
a second electrode 4 located on a side of the reflective structure 5 facing the driving substrate 1;
an ink layer 3 located between the second electrode and the first electrode, light absorbing particles 2 of a first polarity being arranged in the ink layer 3, the light absorbing particles 2 being movable in the ink layer 3, the refractive index of the ink layer 3 being smaller than the refractive index of the reflective structure 5;
the reflective display panel further includes:
a PVDF layer 7 on the side of the second electrode 4 facing the first electrode.
In this embodiment, a PVDF (polyvinylidene fluoride) layer is disposed on a side of the second electrode facing the first electrode, where electric dipoles in the PVDF layer can be orderly arranged under the action of voltage and can still keep orderly arrangement under the action of no voltage, so that the light-absorbing particles are driven to move away from the second electrode by applying an electric signal to the first electrode and the second electrode, and the display device continues to display a bright state even though the electric signal is stopped being applied to the first electrode and the second electrode after the display device displays the bright state; after the electric signals are applied to the first electrode and the second electrode to drive the light absorbing particles to move to the side close to the second electrode, so that the display device displays a dark state, even if the electric signals are stopped being applied to the first electrode and the second electrode, the display device still continues to display the dark state, and therefore the display device has bistable state, and the power consumption of the display device can be reduced.
As shown in fig. 4, after the voltage is applied to the electrodes 81 and 82, the electric dipoles 71 in the PVDF layer 7 can be aligned by the voltage under the action of the electric field, and after the electric dipoles 71 are aligned, the electric dipoles 71 can maintain their alignment even if the voltage application to the electrodes 81 and 82 is stopped. This embodiment makes use of this property of the PVDF layer 7 to produce a bi-stable, low power consumption reflective display panel.
Taking the light absorbing particles 2 with positive charges as an example, as shown in fig. 5, under the condition of applying a positive electric field, the positive electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and repel the light absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a bright state; as shown in fig. 6, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, repelling the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display a bright state, which is bistable.
As shown in fig. 7, under the condition of applying a reverse electric field, the negatively charged electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and attract the light-absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a dark state; as shown in fig. 8, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, attract the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display the dark state, and the reflective display panel is bistable.
Taking the light absorbing particles 2 with negative charges as an example, as shown in fig. 9, under the condition of applying a reverse electric field, the negatively charged electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and repel the light absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a bright state; as shown in fig. 10, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, repel the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display a bright state, which is bistable.
As shown in fig. 11, when a forward electric field is applied, the positive electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and attract the light absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a dark state; as shown in fig. 12, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, attract the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display the dark state, and the reflective display panel has a bistable state.
In the technical scheme of this embodiment, only when the reflective display panel switches between the bright state and the dark state, the electrical signal is applied to the electrode, and if the reflective display panel maintains the bright state or the dark state for displaying, the electrical signal is not required to be applied to the electrode, so that the power consumption of the reflective display panel can be reduced.
The thickness of the PVDF layer can be 0.1-3 um, and when the thickness of the PVDF layer is within the value range, the bistable state of the reflective display panel can be well maintained.
In the technical solution of this embodiment, the PVDF layer is not limited to be disposed on the side of the second electrode 4 facing the first electrode, and other film layers having similar characteristics to the PVDF layer may also be disposed.
In this embodiment, in order to improve the reflectivity to the ambient light, the larger the refractive index difference between the reflective structure and the ink layer, the better, and the refractive index difference between the reflective structure and the ink layer may be greater than 0.3, so that the reflectivity to the ambient light may be ensured.
The refractive index of the ink layer 3 is generally about 1.4, the reflective structure 5 can be made of transparent polymer, the refractive index of the transparent polymer can reach more than 1.8, and the reflectivity of the external environment light can be improved by matching with the ink layer 3 with the low refractive index.
In order to improve the reflectivity of the external environment light, the surface of the reflective structure facing the second electrode is uneven, so that the external environment light is reflected on the surface of the reflective structure 5 facing the ink layer 3, wherein the thickness of the second electrode is smaller than the thickness of the reflective structure 5 and the ink layer 3, and the effect of the second electrode in light propagation can be ignored.
In some embodiments, a side surface of the reflective structure 5 facing the second electrode 4 may have a plurality of protrusions, and the protrusions may be hemispherical, conical, or prismatic, although the shape of the protrusions is not limited to be hemispherical, conical, or prismatic, and other shapes may also be adopted.
As shown in fig. 3, the protrusion may be hemispherical. When the protruding portion is hemispherical, as shown by a dotted line in fig. 2, external ambient light can be totally reflected at the interface between the reflective structure 5 and the ink layer 3, but light incident near the central point of the hemisphere cannot be totally reflected, and enters the ink layer and the driving substrate, and this part of light cannot be utilized, so that the reflectivity of the reflective display panel needs to be improved. In order to further improve the reflectivity of the reflective display panel, a plurality of sub-protrusions may be disposed on a side surface of the protrusion facing the second electrode, so that light that cannot be reflected by the protrusion may be further reflected by the sub-protrusions. The sub-protrusions may be in a hemispherical shape, a conical shape, or a prismatic shape, and of course, the shape of the sub-protrusions is not limited to the hemispherical shape, the conical shape, or the prismatic shape, and other shapes may be adopted.
The sub-convex part can be arranged near the central point of the convex part, the light utilization rate of the partial area is high, and the sub-convex part can also be arranged in the most part area of the convex part.
The driving substrate 1 may include a substrate layer, a gate driving circuit, a planarization layer, a via hole, a lead, and a first electrode layer, which are sequentially disposed. In one embodiment of the present invention, the Gate driving circuit may be a GOA cell circuit or a Gate IC wiring.
In one embodiment of the invention, the substrate layer of the reflective display panel is glass or a flexible substrate. The Gate driving circuit on the glass or flexible substrate adopts Gate IC wiring or a multi-level GOA unit circuit, and the GOA units of each level are used for driving the pixel units of the corresponding row.
In one embodiment, the reflective display panel is a flexible display panel. The substrate layer is a flexible substrate, and the used material has flexibility. When the flexible substrate is prepared, the flexible substrate is firstly formed on a substrate with relatively hard texture, and when the flexible substrate needs to be separated from the substrate, the flexible substrate is separated from the substrate by laser irradiation.
In order to improve the light utilization rate, the transparent cover plate 6 may include an optical waveguide structure, and may utilize the total reflection principle to make the ambient light incident into the pixel region totally reflect, and not emit to the display side, so as to implement dark state display; when the ambient light entering the pixel region does not meet the condition of total reflection, the ambient light can be emitted to the display side to realize bright state display, and a polaroid is not needed, so that the refractive index is not lost, and the light utilization rate is improved by more than 50%.
In order to realize color display, a color filter layer may be further disposed on a side of the ink layer 3 away from the driving substrate 1, and the color filter layer may be disposed on a side of the transparent cover plate 6 facing the driving substrate 1 or a side of the transparent cover plate 6 away from the driving substrate 1.
An embodiment of the present invention provides a display device including the reflective display panel as described above.
The display device includes but is not limited to: radio frequency unit, network module, audio output unit, input unit, sensor, display unit, user input unit, interface unit, memory, processor, and power supply. It will be appreciated by those skilled in the art that the above described configuration of the display device does not constitute a limitation of the display device, and that the display device may comprise more or less of the components described above, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the display device includes, but is not limited to, a display, a mobile phone, a tablet computer, a television, a wearable electronic device, a navigation display device, and the like.
The display device may be: the display device comprises a television, a display, a digital photo frame, a mobile phone, a tablet personal computer and any other product or component with a display function, wherein the display device further comprises a flexible circuit board, a printed circuit board and a back plate.
An embodiment of the present invention provides a working method of a display device, which is applied to the display device described above, and includes:
applying an electrical signal to the first electrode and the second electrode to align an electric dipole of a first polarity in the PVDF layer adjacent to the ink layer, driving the light absorbing particles to move away from the second electrode to cause the display device to display a bright state, and stopping applying the electrical signal to the first electrode and the second electrode, wherein the electric dipole of the first polarity in the PVDF layer remains aligned adjacent to the ink layer and repels the light absorbing particles to cause the display device to continue displaying the bright state;
and applying an electric signal to the first electrode and the second electrode to enable an electric dipole with a second polarity in the PVDF layer to be arranged close to the ink layer side, driving the light-absorbing particles to move towards the second electrode side to enable the display device to display a dark state, stopping applying the electric signal to the first electrode and the second electrode, keeping the electric dipole with the second polarity in the PVDF layer to be arranged close to the ink layer side, and enabling the display device to continuously display the dark state.
Taking the light absorbing particles 2 with positive charges as an example, as shown in fig. 5, under the condition of applying a positive electric field, the positive electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and repel the light absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a bright state; as shown in fig. 6, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, repelling the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display a bright state, which is bistable.
As shown in fig. 7, under the condition of applying a reverse electric field, the negatively charged electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and attract the light-absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a dark state; as shown in fig. 8, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, attract the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display the dark state, and the reflective display panel is bistable.
Taking the light absorbing particles 2 with negative charges as an example, as shown in fig. 9, under the condition of applying a reverse electric field, the negatively charged electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and repel the light absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a bright state; as shown in fig. 10, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, repel the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display a bright state, which is bistable.
As shown in fig. 11, when a forward electric field is applied, the positive electric dipoles of the PVDF layer 7 are orderly arranged toward the ink layer 3, and attract the light absorbing particles 2 in the ink layer 3, so that the reflective display panel displays a dark state; as shown in fig. 12, then, in the absence of power, the electric dipoles in the PVDF layer 7 maintain their ordered arrangement, attract the light absorbing particles 2 in the ink layer 3, and the reflective display panel continues to display the dark state, and the reflective display panel has a bistable state.
In this embodiment, a PVDF layer is disposed on a side of the second electrode facing the first electrode, where electric dipoles in the PVDF layer can be orderly arranged under the action of voltage and can still keep orderly arrangement under the action of no voltage, so that the light-absorbing particles are driven to move in a direction away from the second electrode by applying an electric signal to the first electrode and the second electrode, and after the display device displays a bright state, the display device still continues to display the bright state even though the electric signal is stopped being applied to the first electrode and the second electrode; after the electric signals are applied to the first electrode and the second electrode to drive the light absorbing particles to move to the side close to the second electrode, so that the display device displays a dark state, even if the electric signals are stopped being applied to the first electrode and the second electrode, the display device still continues to display the dark state, and therefore the display device has bistable state, and the power consumption of the display device can be reduced.
It should be noted that, in the present specification, all the embodiments are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from the other embodiments. In particular, for the embodiments, since they are substantially similar to the product embodiments, the description is simple, and the relevant points can be referred to the partial description of the product embodiments.
Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, it can be "directly on" or "under" the other element or intervening elements may be present.
In the foregoing description of embodiments, the particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure 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 disclosure, and all the changes or substitutions should be covered within the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (10)
1. A reflective display panel, comprising:
the driving substrate is provided with a first electrode;
a transparent cover plate arranged opposite to the driving substrate;
the reflecting structure is positioned on one side of the transparent cover plate facing the driving substrate;
the second electrode is positioned on one side of the reflecting structure facing the driving substrate;
an ink layer between the second electrode and the first electrode, the ink layer having light absorbing particles of a first polarity disposed therein, the light absorbing particles being movable in the ink layer, the ink layer having a refractive index less than a refractive index of the reflective structure;
the reflective display panel further includes:
a PVDF layer located on the side of the second electrode facing the first electrode.
2. The reflective display panel of claim 1, wherein said reflective structure is made of a transparent polymer.
3. The reflective display panel according to claim 1, wherein a surface of the reflective structure facing the second electrode is rugged.
4. The reflective display panel according to claim 1, wherein a surface of the reflective structure facing the second electrode has a plurality of protrusions.
5. The reflective display panel according to claim 4, wherein the convex portion is a hemispherical shape, a conical shape, or a prismatic shape.
6. The reflective display panel according to claim 4, wherein a side surface of the protrusion facing the second electrode has a plurality of sub-protrusions.
7. The reflective display panel of claim 1 wherein the difference in refractive index between the reflective structure and the ink layer is greater than 0.3.
8. The reflective display panel according to claim 1, wherein the PVDF layer has a thickness of 0.1-3 um.
9. A display device comprising the reflective display panel according to any one of claims 1 to 8.
10. An operating method of a display device, applied to the display device according to claim 9, comprising:
applying an electrical signal to the first electrode and the second electrode to align an electric dipole of a first polarity in the PVDF layer adjacent to the ink layer, driving the light absorbing particles to move away from the second electrode to cause the display device to display a bright state, and stopping applying the electrical signal to the first electrode and the second electrode, wherein the electric dipole of the first polarity in the PVDF layer remains aligned adjacent to the ink layer and repels the light absorbing particles to cause the display device to continue displaying the bright state;
and applying an electric signal to the first electrode and the second electrode to enable an electric dipole with a second polarity in the PVDF layer to be arranged close to the ink layer side, driving the light-absorbing particles to move towards the second electrode side to enable the display device to display a dark state, stopping applying the electric signal to the first electrode and the second electrode, keeping the electric dipole with the second polarity in the PVDF layer to be arranged close to the ink layer side, and enabling the display device to continuously display the dark state.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354385A (en) * | 2000-10-04 | 2002-06-19 | 精工爱普生株式会社 | Electrophoresis device and manufacturing method thereof |
| JP2005241916A (en) * | 2004-02-26 | 2005-09-08 | Brother Ind Ltd | Electrophoretic display device |
| US20080316578A1 (en) * | 2007-04-24 | 2008-12-25 | Seiko Epson Corporation | Electrophoretic display device and electronic apparatus |
| CN106200199A (en) * | 2016-09-29 | 2016-12-07 | 京东方科技集团股份有限公司 | Display floater and driving method thereof |
| CN107924101A (en) * | 2015-09-02 | 2018-04-17 | 清墨显示股份有限责任公司 | Bistable state enhancing in total internal reflection images display |
-
2021
- 2021-02-24 CN CN202110208933.XA patent/CN112859475A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1354385A (en) * | 2000-10-04 | 2002-06-19 | 精工爱普生株式会社 | Electrophoresis device and manufacturing method thereof |
| JP2005241916A (en) * | 2004-02-26 | 2005-09-08 | Brother Ind Ltd | Electrophoretic display device |
| US20080316578A1 (en) * | 2007-04-24 | 2008-12-25 | Seiko Epson Corporation | Electrophoretic display device and electronic apparatus |
| CN107924101A (en) * | 2015-09-02 | 2018-04-17 | 清墨显示股份有限责任公司 | Bistable state enhancing in total internal reflection images display |
| CN106200199A (en) * | 2016-09-29 | 2016-12-07 | 京东方科技集团股份有限公司 | Display floater and driving method thereof |
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