CN118311814A - Display panel and display device - Google Patents
Display panel and display device Download PDFInfo
- Publication number
- CN118311814A CN118311814A CN202410445340.9A CN202410445340A CN118311814A CN 118311814 A CN118311814 A CN 118311814A CN 202410445340 A CN202410445340 A CN 202410445340A CN 118311814 A CN118311814 A CN 118311814A
- Authority
- CN
- China
- Prior art keywords
- electrode
- light
- reflecting plate
- sub
- polarity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims description 73
- 238000013459 approach Methods 0.000 claims description 17
- 239000007788 liquid Substances 0.000 claims description 9
- 238000001579 optical reflectometry Methods 0.000 abstract description 4
- 230000009471 action Effects 0.000 description 6
- 230000005684 electric field Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 239000003094 microcapsule Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000002310 reflectometry Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Classifications
-
- 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
- G02F1/1677—Structural association of cells with optical devices, e.g. reflectors or illuminating devices
-
- 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
-
- 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
- G02F1/1685—Operation of cells; Circuit arrangements affecting the entire cell
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Molecular Biology (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The application discloses a display panel and a display device, comprising a driving substrate, an opposite substrate and a display medium layer clamped between the driving substrate and the opposite substrate, wherein the display medium layer comprises a plurality of pixel units which are arranged in an array manner, and the driving substrate is used for driving the pixel units to form images on one side of the opposite substrate so as to execute image display. The pixel unit comprises an electrode layer and a light emitting layer which are sequentially stacked along a first direction, the electrode layer is arranged adjacent to the opposite substrate, the light emitting layer is arranged adjacent to the driving substrate, the light emitting layer comprises at least one reflecting plate containing electric charges, the electrode layer is used for controlling the reflecting plate to move along a preset direction, and the brightness of emergent light rays of the pixel unit is controlled by adjusting the position of the reflecting plate. The light reflectivity of the pixel units can be effectively improved by controlling the movement of the reflecting plate to adjust the brightness of the reflected light.
Description
Technical Field
The application relates to the technical field of display, in particular to a display panel and a display device.
Background
The ink screen is a reflective display screen, external environment light is incident into the screen, and the light is reflected out of the screen through ink particles to realize development. The backlight is not required to provide a backlight source compared with a Liquid crystal display (Liquid CRYSTAL DISPLAY, LCD), and an Organic Light-Emitting semiconductor (OLED) is not required to be excited to emit Light compared with an OLED (Organic Light-Emitting semiconductor) display, so that the ink screen has the advantage of low power consumption.
Currently, more sophisticated ink screen schemes include: microcapsule type ink screens and electrowetting type ink screens. The microcapsule type ink screen comprises two or more ink particles, the ink particles move under the action of an electric field force so as to emit different light rays, but the charged ink particles are easily condensed together under the action of static electricity, so that the response time of the display screen is slow, and the display is influenced. The electrowetting type ink screen utilizes the surface tension characteristic of liquid to control the ink drops to stretch and shrink on the hydrophobic layer so as to realize imaging. This has problems in that when a white state is required to be displayed, the white state cannot be completely displayed, black spots exist, and ink splitting easily occurs during the ink shrinkage process, so that the light reflectivity is low. Therefore, how to effectively improve the light reflectivity in the ink screen is a problem to be solved.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present application provides a display panel and a display device capable of effectively improving light reflectivity and color saturation.
The application provides a display panel which comprises a driving substrate, an opposite substrate and a display medium layer clamped between the driving substrate and the opposite substrate, wherein the display medium layer comprises a plurality of pixel units which are arranged in an array manner, and the driving substrate is used for driving the pixel units to form images on one side of the opposite substrate so as to execute image display. The pixel unit comprises an electrode layer and a light emitting layer which are sequentially stacked along a first direction, the electrode layer is adjacent to the opposite substrate, the light emitting layer is adjacent to the driving substrate, the light emitting layer comprises at least one reflecting plate containing electric charges, the electrode layer is used for controlling the reflecting plate to move along a preset direction and controlling the brightness of emergent light rays of the pixel unit by adjusting the position of the reflecting plate.
Optionally, the light emitting layer further includes a containing cavity and a first fluid, the light reflecting plate and the first fluid are disposed in the containing cavity, the light reflecting plate moves in the first fluid along the preset direction under the control of the electrode layer, and the first fluid is transparent liquid.
Optionally, the light emitting layer further includes a second fluid, the second fluid is disposed in the accommodating cavity, the second fluid is a non-transparent liquid, the density of the second fluid is greater than that of the first fluid, the second fluid is disposed adjacent to the driving substrate, the electrode layer controls the light reflecting plate to move along the preset direction so as to adjust an exposed area of the second fluid, and the second fluid is used for absorbing light.
Optionally, the light reflecting plate has a charge of a first polarity, when the electrode layer applies a voltage of a second polarity, the light reflecting plate is close to the electrode layer along the preset direction under the control of the electrode layer, and when the electrode plate stops applying the voltage, the light reflecting plate is far away from the electrode layer along the preset direction so as to expose the second fluid, wherein the first polarity is opposite to the second polarity.
Optionally, the light emitting layer further includes a first electrode plate extending along the first direction and disposed adjacent to the accommodating cavity along a second direction, wherein the first direction is perpendicular to the second direction; when the electrode layer stops applying voltage, the first electrode plate applies voltage of the second polarity to control the reflector to move in the preset direction, and the area of the reflector exposed by the second fluid is adjusted.
Optionally, when the electrode layer applies a voltage of a second polarity, the first electrode plate applies a voltage of a first polarity to control the light reflecting plate to be close to the electrode layer along the preset direction and adjacent to and parallel to the electrode layer, so as to control the second fluid to completely absorb light; when the first electrode plate applies voltage with the second polarity, the electrode layer applies the voltage with the first polarity so as to control the reflector to move in the preset direction to be close to the first electrode plate and adjacent to and parallel to the first electrode plate, and the electrode layer is used for controlling the reflector to completely reflect light.
Optionally, the light emitting layer includes two light reflecting plates, which are a first light reflecting plate and a second light reflecting plate, the first light reflecting plate and the second light reflecting plate are symmetrically arranged with the first direction as a symmetry axis, the electrode layer includes a first sub-electrode and a second sub-electrode, the first sub-electrode and the second sub-electrode are symmetrically arranged with the first direction as a symmetry axis, the first sub-electrode is adjacent to the first light reflecting plate, and the second sub-electrode is adjacent to the second light reflecting plate; the first reflecting plate is provided with charges of a first polarity, and when the first sub-electrode is applied with voltage of a second polarity, the first reflecting plate moves along a first preset direction under the control of the first sub-electrode so as to adjust the area exposing the second fluid; the second reflecting plate is provided with charges of a second polarity, and when the second sub-electrode is applied with voltage of a first polarity, the second reflecting plate moves along a second preset direction under the control of the second sub-electrode so as to adjust the area exposing the second fluid.
Optionally, the first electrode plate is disposed adjacent to the first sub-electrode and is used for cooperating with the first sub-electrode to control the movement of the first reflecting plate, the light emitting layer further includes a second electrode plate, the second electrode plate is adjacent to the second sub-electrode and is disposed opposite to the first electrode plate along the second direction, and the second electrode plate is used for cooperating with the second sub-electrode to control the movement of the second reflecting plate.
Optionally, when the first sub-electrode applies a voltage of a second polarity, the first electrode plate applies a voltage of a first polarity to control the first reflector to approach the first sub-electrode along the first preset direction, and when the first sub-electrode stops applying the voltage or applies the voltage of the first polarity, the second electrode applies the voltage of the second polarity to control the first reflector to be far away from the first sub-electrode along the first preset direction so as to adjust the area exposing the second fluid; when the second sub-electrode is applied with a voltage of a first polarity, the second electrode plate is applied with a voltage of a second polarity so as to control the second reflecting plate to be close to the second sub-electrode along the second preset direction, and when the second sub-electrode stops applying the voltage or applies the voltage of the second polarity, the second electrode plate is applied with the voltage of the first polarity so as to control the second reflecting plate to be far away from the second sub-electrode along the second preset direction so as to adjust the area exposing the second fluid.
The embodiment of the application also provides a display device which comprises a power supply module and the display panel, wherein the power supply module is used for providing a driving power supply for the display panel so as to drive the display panel to execute image display.
Compared with the prior art, in the display panel provided by the embodiment of the application, the reflection plate is arranged in the pixel unit, and the brightness of the reflected light is adjusted by controlling the reflection plate to move in the preset direction, so that the state of completely reflecting the light or completely absorbing the light can be achieved, the problem of low reflectivity caused by splitting of electronic ink in the traditional electronic ink screen is effectively solved, and the display effect is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a display device according to an embodiment of the present application;
FIG. 2 is a schematic side layout of the display panel of FIG. 1;
FIG. 3 is a schematic cross-sectional view of a pixel unit in the dielectric layer shown in FIG. 2;
Fig. 4 is a schematic cross-sectional structure of a pixel unit according to a second embodiment of the present application;
fig. 5 is a schematic diagram of the pixel unit in fig. 4 when the pixel unit is completely black.
Reference numerals: the display device comprises a display device-1, a display panel-10, a power module-20, a display area-10 a, a non-display area-10 b, a driving substrate-10 c, a counter substrate-10 d, a display medium layer-10 e, a pixel unit-30, a first direction-F1, a second direction-F2, an electrode layer-31, a light emitting layer-32, a reflector plate-321, a containing cavity-322, a first fluid-323, a second fluid-324, a first electrode plate-325, a second electrode plate-326, a first sub-electrode-311, a second sub-electrode-312, a first rotation axis-327 and a second rotation axis-328.
Detailed Description
In order that the application may be readily understood, a more complete description of the application will be rendered by reference to the appended drawings. The drawings illustrate preferred embodiments of the application. This application may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The following description of the embodiments refers to the accompanying drawings, which illustrate specific embodiments in which the application may be practiced. The numbering of the components itself, e.g. "first", "second", etc., is used herein merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. Directional terms, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., in the present application are merely referring to the directions of the attached drawings, and thus, directional terms are used for better, more clear explanation and understanding of the present application, rather than indicating or implying that the apparatus or element being referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present application.
In the description of the present application, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present application will be understood in specific cases by those of ordinary skill in the art. It should be noted that the terms "first," "second," and the like in the description and the claims of the present application and in the drawings are used for distinguishing between different objects and not for describing a particular sequential order.
Furthermore, the terms "comprises," "comprising," "includes," "including," or "having," when used in this specification, are intended to specify the presence of stated features, operations, elements, etc., but do not limit the presence of one or more other features, operations, elements, etc., but are not limited to other features, operations, elements, etc. Furthermore, the terms "comprises" or "comprising" mean that there is a corresponding feature, number, step, operation, element, component, or combination thereof disclosed in the specification, and that there is no intention to exclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, or combinations thereof. Furthermore, when describing embodiments of the application, use of "may" means "one or more embodiments of the application. Also, the term "exemplary" is intended to refer to an example or illustration.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a display device according to an embodiment of the application. As shown in fig. 1, the display device 1 includes a display panel 10 and a power module 20, wherein the display panel 10 is used for displaying images, and the power module 20 is used for providing driving power for displaying images of the display panel 10. In this embodiment, the display panel 10 may be an electronic ink display panel.
Referring to fig. 2, fig. 2 is a schematic side view of the display panel in fig. 1.
As shown in fig. 2, the display panel 10 includes a display region 10a for an image and a non-display region 10b. The display area 10a is used for performing image display, the non-display area 10b is circumferentially arranged around the display area 10a to set other auxiliary components or modules, specifically, the display panel 10 includes a driving substrate 10c and an opposite substrate 10d, and a display medium layer 10e sandwiched between the driving substrate 10c and the opposite substrate 10d, the display medium layer 10e is provided with a plurality of pixel units 30 arranged in an array, and driving elements arranged on the driving substrate 10c and the opposite substrate 10d generate corresponding electric fields according to Data signals (Data), so that the pixel units in the display medium layer 10e emit light rays with corresponding brightness to perform image display. The display panel 10 further includes other elements or components, such as a signal processor module and a signal sensing module, etc., disposed in the non-display area 10b.
Referring to fig. 3, fig. 3 is a schematic cross-sectional structure of a pixel unit in the dielectric layer shown in fig. 2.
As shown in fig. 3, the pixel unit 30 includes an electrode layer 31 and a light-emitting layer 32, which are sequentially stacked in the first direction F1, wherein the electrode layer 31 is disposed adjacent to the opposite substrate 10d, and the light-emitting layer 32 is disposed adjacent to the driving substrate 10 c. The light emitting layer 32 is provided with a light reflecting plate 321 with charges, and the electrode layer 31 is used for controlling the light reflecting plate 321 to move along a preset direction, and the position of the light reflecting plate 321 is controlled so as to adjust the angle of light reflected by the light reflecting plate 321, so that the brightness of the light emitted by the pixel unit 30 is controlled, and the pixel unit 30 is controlled to display images.
The light-emitting layer 32 further includes a receiving cavity 322, a first fluid 323, and a second fluid 324, where the light-reflecting plate 321, the first fluid 323, and the second fluid 324 are disposed in the receiving cavity 322, where the first fluid 323 is a transparent liquid, the second fluid 324 is a non-transparent liquid, and a density of the first fluid 323 is less than that of the second fluid 324. The light reflecting plate 321 is immersed in the first fluid 323 and moves in the first fluid 323 along a preset direction under the control of the electrode layer 31, when the electrode layer 31 applies voltage to control the light reflecting plate 321 to move to a preset position, the light reflecting plate 321 is used for reflecting light to control the pixel unit 30 to display images, when the electrode layer 31 stops applying voltage, the light reflecting plate 321 moves under the action of gravity to expose the second fluid 324, and the second fluid 324 is used for absorbing light to reduce the brightness of the light reflected by the pixel unit 30.
When the electrode layer 31 is applied with a voltage of a second polarity, the light reflecting plate 321 approaches the electrode layer 31 along a preset direction under the action of an electric field force, and when the light reflecting plate 321 moves to a preset position, the light reflecting plate 321 completely shields the second fluid 324 in the first direction F1, and at this time, the light reflecting plate 321 reflects the light with the maximum brightness. When the light reflecting plate 321 is located at a predetermined position, the light reflecting plate 321 is disposed adjacent to and parallel to the electrode layer 31. The first polarity is opposite to the second polarity, for example, the light reflecting plate 321 has a negative charge, and when the positive voltage is applied to the electrode layer 31, the negative charge in the light reflecting plate 321 is attracted by the electrode layer 31 and drives the light reflecting plate 321 to move towards the electrode layer 31 along a preset direction.
In an exemplary embodiment, a voltage of the first polarity may be applied to the electrode layer 31 to control the light reflecting plate 321 to move away from the electrode layer 31 along a preset direction, so as to increase the exposing speed of the second fluid 324, although the light reflecting plate 321 may also move under the control of other acting forces, which is not limited in the present application.
The light-emitting layer 32 further includes a first electrode plate 325, where the first electrode plate 325 extends along a first direction F1 and is disposed adjacent to the accommodating cavity 322 along a second direction F2, and the first direction F1 is perpendicular to the second direction F2. The first electrode plate 325 is used to control the light reflecting plate 321 to move along a preset direction in cooperation with the electrode layer 31.
For example, when the electrode layer 31 is applied with the voltage of the second polarity, the first electrode plate 325 stops applying the voltage to control the light reflecting plate 321 to move to the preset position along the preset direction, that is, to approach the electrode layer 31 along the preset direction, when the electrode layer 31 stops applying the voltage of the second polarity, the first electrode plate 325 applies the voltage of the second polarity to control the light reflecting plate 321 to gradually separate from the electrode layer 31 along the preset direction and gradually approach the first electrode plate 325, and when the light reflecting plate 321 is adjacent to and parallel to the first electrode plate, the area of the pixel unit 30 exposing the second fluid 324 reaches the maximum, and at this time, the brightness displayed by the pixel unit 30 is the lowest, that is, the display is in the full black state.
In another embodiment, when the electrode layer 31 applies the voltage of the second polarity, the first electrode plate 325 may be controlled to apply the voltage of the first polarity to increase the control force on the light reflecting plate 321, so as to control the light reflecting plate 321 to approach the electrode layer 31 along the preset direction at a faster speed. When it is desired to control the reflector 321 away from the electrode layer 31, the electrode layer 31 may apply a voltage of a first polarity, while the first electrode plate 325 may apply a voltage of a second polarity, so as to control the reflector 321 to approach the first electrode plate 325 at a faster speed.
Referring to fig. 4, fig. 4 is a schematic cross-sectional structure of a pixel unit according to a second embodiment of the application. As shown in fig. 4, the pixel unit 30 includes an electrode layer 31 and a light-emitting layer 32, which are sequentially stacked in the first direction F1, wherein the electrode layer 31 is disposed adjacent to the opposite substrate 10d, and the light-emitting layer 32 is disposed adjacent to the driving substrate 10 c.
The electrode layer 31 includes a first sub-electrode 311 and a second sub-electrode 312, the first sub-electrode 311 and the second sub-electrode 312 are symmetrically arranged with respect to a first direction F1 as a symmetry axis, and the light-emitting layer 32 includes a first light-reflecting plate 321a and a second light-reflecting plate 321b having charges, the first light-reflecting plate 321a and the second light-reflecting plate 321b being symmetrically arranged with respect to the first direction F1 as a symmetry axis.
When the first sub-electrode 311 applies a voltage of a second polarity, the first light reflecting plate 321a moves along a first preset direction under the control of the first sub-electrode 311, and when the first light reflecting plate 321a moves to a first preset position under the control of the first sub-electrode 311, the first light reflecting plate 321a is adjacent to and parallel to the first sub-electrode 311, and the first light reflecting plate 321a totally reflects light so that the pixel unit 30 displays the highest gray level. When the first sub-electrode 311 stops applying the voltage, the first reflective plate 321a moves reversely in the first predetermined direction under the action of gravity to gradually expose the second fluid 324, and the second fluid 324 is used for absorbing light to reduce the brightness of the light reflected by the pixel unit 30.
The second light reflecting plate 321b has charges of a second polarity, when the second sub-electrode 312 applies a voltage of a first polarity, the second light reflecting plate 321b moves along a second preset direction under the control of the second sub-electrode 312, and when the second light reflecting plate 321b moves to a second preset position under the control of the second sub-electrode 312, the second light reflecting plate 321b is adjacent to and parallel to the second sub-electrode 312, and at this time, the second light reflecting plate 321b reflects light to enable the pixel unit 30 to display images. When the voltage is stopped from being applied to the second sub-electrode 312, the second reflecting plate 321b moves reversely in the second predetermined direction under the action of gravity to gradually expose the second fluid 324, and the second fluid 324 is used for absorbing light to reduce the brightness of the light reflected by the pixel unit 30. When the first light reflecting plate 321a is located at the first preset position and the second light reflecting plate 321b is located at the second preset position, the first light reflecting plate 321a and the second light reflecting plate 321b are symmetrical with respect to the first direction F1 as a symmetry axis, and since the polarities of charges in the first light reflecting plate 321a and the second light reflecting plate 321b are opposite, the first light reflecting plate 321a and the second light reflecting plate 321b attract each other when approaching to the electrode layer 31, so that the movement speed of the first light reflecting plate 321a and the second light reflecting plate 321b can be improved, and the response speed of the pixel unit can be improved.
The first reflecting plate 321a is the same as the reflecting plate 321 in the first embodiment, and the movement track is the same.
The light-emitting layer 32 further includes a receiving cavity 322, a first fluid 323 and a second fluid 324, where the first light reflecting plate 321a, the second light reflecting plate 321b, the first fluid 323 and the second fluid 324 are disposed in the receiving cavity 322, the first fluid 323 is transparent liquid, the second fluid 324 is non-transparent liquid, the density of the first fluid 323 is less than that of the second fluid 324, and the second fluid 324 is flatly disposed on a side of the receiving cavity 322 adjacent to the driving substrate 10 c. The first and second light reflecting plates 321a and 321b are immersed in the first fluid 323 and move in a predetermined direction in the first fluid 323 under the control of the first and second sub-electrodes 311 and 312, respectively.
The light-emitting layer 32 further includes a first electrode plate 325 and a second electrode plate 326, where the first electrode plate 325 and the second electrode plate 326 extend along a first direction F1 and are disposed at a predetermined distance along a second direction F2, and the accommodating cavity 322 is disposed between the first electrode plate 325 and the second electrode plate 326, that is, the first electrode plate 325 and the second electrode plate 326 are respectively disposed at two sides of the accommodating cavity 322, and the first direction F1 is perpendicular to the second direction F2. The first electrode plate 325 is used for controlling the first light reflecting plate 321a to move along a preset first preset direction in cooperation with the first sub-electrode 311, and the second electrode plate 326 is used for controlling the second light reflecting plate 321b to move along a second preset direction in cooperation with the second sub-electrode 312.
For example, when the first sub-electrode 311 applies the voltage of the second polarity, the first electrode plate 325 is stopped to apply the voltage to control the first light reflecting plate 321a to move to the first preset position along the first preset direction, that is, gradually approach the first sub-electrode 311 along the first preset direction, and when the first sub-electrode 311 stops applying the voltage of the second polarity, the first electrode plate 325 is controlled to apply the voltage of the second polarity to control the first light reflecting plate 321a to move reversely along the first preset direction, that is, gradually approach the first electrode plate 325, that is, gradually approach the first sub-electrode 311.
Similarly, when the second sub-electrode 312 applies the voltage of the first polarity, the second electrode plate 326 stops applying the voltage to control the second light reflecting plate 321b to move to the second preset position along the second preset direction, that is, gradually approach the second sub-electrode 312 along the second preset direction, and when the second sub-electrode 312 stops applying the voltage of the first polarity, the second electrode plate 326 is controlled to apply the voltage of the first polarity to control the second light reflecting plate 321b to move reversely along the second preset direction, that is, gradually approach the second electrode plate 326, that is, gradually approach the second sub-electrode 312. When the first light reflecting plate 321a is located at the first preset position and the second light reflecting plate 321b is located at the second preset position, the first light reflecting plate 321a is adjacent to and parallel to the first sub-electrode 311, the second light reflecting plate 321b is adjacent to and parallel to the second sub-electrode 312, at this time, the brightness of the bright line reflected by the first light reflecting plate 321a and the second light reflecting plate 321b is maximum, the pixel is displayed in a white state, and when the first light reflecting plate 321a is adjacent to and parallel to the first electrode plate 325, the second light reflecting plate 321b is adjacent to and parallel to the second electrode plate 326, the area of the pixel unit 30 exposed out of the second fluid is maximum, at this time, the brightness of the pixel unit 30 is lowest, and the pixel is displayed in a full black state.
In another embodiment, when the first sub-electrode 311 applies the voltage of the second polarity, the first electrode plate 325 may be further controlled to apply the voltage of the first polarity to increase the control force on the first light reflecting plate 321a, so as to control the light reflecting plate to move in the first preset direction at a faster speed and approach the first sub-electrode 311. When the first light reflecting plate 321a needs to be controlled to be far away from the first sub-electrode 311, the first sub-electrode 311 can apply a voltage of a first polarity, and the first electrode plate 325 can apply a voltage of a second polarity, so as to control the first light reflecting plate 321a to approach the first electrode plate 325 at a faster speed. Similarly, when the second sub-electrode 312 applies a voltage of the first polarity, the second electrode plate 326 may also apply a voltage of the opposite polarity to control the movement of the second reflecting plate 321b, and the control principle is the same as that of the first reflecting plate 321a, which is not described herein.
The light-emitting layer 32 further includes a first rotation axis 327 and a second rotation axis 328, the first rotation axis 327 is disposed at a position of an intersection point between the first light-reflecting plate 321a and the first electrode plate 325, the second rotation axis 328 is disposed at a position of an intersection point between the second light-reflecting plate 321b and the second electrode plate 326, the first light-reflecting plate 321a is controlled by the first sub-electrode 311 and the first electrode plate 325 to perform a rotation motion along the first rotation axis 327, that is, to move along a first preset direction, and the second light-reflecting plate 321b is controlled by the second sub-electrode 312 and the second electrode plate 326 to perform a rotation motion along the second rotation axis 328, that is, to move along a second preset direction.
Referring to fig. 5, fig. 5 is a schematic diagram of the pixel unit 30 in fig. 4 when it is completely black.
As shown in fig. 5, the first light reflecting plate 321a has a first polarity of electric charge, the second light reflecting plate 321b has a second polarity of electric charge, when the first sub-electrode 311 applies a first polarity of electric voltage and the first electrode plate 325 applies a second polarity of electric voltage, the first light reflecting plate 321a moves in a first preset direction under the control of electric field force and gradually approaches the first electrode plate 325 and is adjacent to and parallel with the first electrode plate 325, and when the second sub-electrode 312 applies a second polarity of electric voltage and the second electrode plate 326 applies a first polarity of electric voltage, the second light reflecting plate 321b moves in a second preset direction under the control of electric field force and gradually approaches the second electrode plate 326 and is adjacent to and parallel with the second electrode plate 326, at this time, ambient light incident from the opposite substrate 10d is directly absorbed by the second fluid 324 exposed, or is reflected to the second fluid 324 through the first light reflecting plate 321a and the second light reflecting plate 321b and is absorbed by the second fluid 324, so that the pixel unit 30 displays the lowest brightness, i.e. presents a full black state.
In the exemplary embodiment, the number of the reflection plates in the pixel unit 30 may be also set to three, four, etc., and may be set according to the specific case, which is not limited by the present application.
The brightness of the light reflected by the pixel unit is adjusted by arranging the reflecting plate in the pixel unit, when the reflecting plate is parallel to the electrode layer, the maximum reflection brightness can be achieved, and when the reflecting plate is parallel to the electrode layer, the second fluid can be exposed to the greatest extent, so that the maximum light absorption effect is achieved, namely the minimum brightness is displayed, the brightness and the reflectivity of the pixel in the display panel can be effectively displayed, the problems that black spots exist in the traditional electronic ink shrinkage are eliminated, and the color saturation of the display panel is effectively improved.
It is to be understood that the invention is not limited in its application to the examples described above, but is capable of modification and variation in light of the above teachings by those skilled in the art, and that all such modifications and variations are intended to be included within the scope of the appended claims.
Claims (10)
1. The display panel comprises a driving substrate, an opposite substrate and a display medium layer clamped between the driving substrate and the opposite substrate, wherein the display medium layer comprises a plurality of pixel units which are arranged in an array manner, and the driving substrate is used for driving the pixel units to form images on one side of the opposite substrate so as to execute image display;
The pixel unit is characterized by comprising an electrode layer and a light emitting layer which are sequentially stacked along a first direction, wherein the electrode layer is adjacent to the opposite substrate, the light emitting layer is adjacent to the driving substrate, the light emitting layer comprises at least one reflecting plate containing electric charges, the electrode layer is used for controlling the reflecting plate to move along a preset direction, and the position of the reflecting plate is adjusted to control the brightness of emergent light rays of the pixel unit.
2. The display panel of claim 1, wherein the light-emitting layer further comprises a receiving cavity and a first fluid, the light-reflecting plate and the first fluid are disposed in the receiving cavity, the light-reflecting plate moves in the first fluid along the predetermined direction under the control of the electrode layer, and the first fluid is a transparent liquid.
3. The display panel of claim 2, wherein the light-emitting layer further comprises a second fluid, the second fluid is disposed in the accommodating cavity, the second fluid is a non-transparent liquid, the density of the second fluid is greater than that of the first fluid, the second fluid is disposed adjacent to the driving substrate, the electrode layer controls the light-reflecting plate to move along the preset direction so as to adjust the exposed area of the second fluid, and the second fluid is used for absorbing light.
4. The display panel of claim 3, wherein the light reflecting plate has a charge of a first polarity, the light reflecting plate is adjacent to the electrode layer in the predetermined direction under control of the electrode layer when a voltage of a second polarity is applied to the electrode layer, and the light reflecting plate is distant from the electrode layer in the predetermined direction to expose the second fluid when the electrode plate stops applying the voltage, wherein the first polarity is opposite to the second polarity.
5. The display panel of claim 4, wherein the light-exiting layer further comprises a first electrode plate extending along the first direction and disposed adjacent to the receiving cavity along a second direction, wherein the first direction is perpendicular to the second direction;
When the electrode layer stops applying voltage, the first electrode plate applies voltage of the second polarity to control the reflector to move in the preset direction, and the area of the reflector exposed by the second fluid is adjusted.
6. The display panel of claim 5, wherein when the electrode layer applies a voltage of a second polarity, the first electrode plate applies a voltage of a first polarity to control the light reflecting plate to be adjacent to and parallel to the electrode layer along the preset direction, so as to control the second fluid to completely absorb light;
When the first electrode plate applies voltage with the second polarity, the electrode layer applies the voltage with the first polarity so as to control the reflector to move in the preset direction to be close to the first electrode plate and adjacent to and parallel to the first electrode plate, and the electrode layer is used for controlling the reflector to completely reflect light.
7. The display panel according to claim 6, wherein the light-emitting layer includes two light-reflecting plates, which are a first light-reflecting plate and a second light-reflecting plate, respectively, the first light-reflecting plate and the second light-reflecting plate being disposed symmetrically about the first direction as an axis of symmetry, the electrode layer includes a first sub-electrode and a second sub-electrode, the first sub-electrode and the second sub-electrode being disposed symmetrically about the first direction as an axis of symmetry, the first sub-electrode being disposed adjacent to the first light-reflecting plate, and the second sub-electrode being disposed adjacent to the second light-reflecting plate;
the first reflecting plate is provided with charges of a first polarity, and when the first sub-electrode is applied with voltage of a second polarity, the first reflecting plate moves along a first preset direction under the control of the first sub-electrode so as to adjust the area exposing the second fluid;
The second reflecting plate is provided with charges of a second polarity, and when the second sub-electrode is applied with voltage of a first polarity, the second reflecting plate moves along a second preset direction under the control of the second sub-electrode so as to adjust the area exposing the second fluid.
8. The display panel of claim 7, wherein the first electrode plate is disposed adjacent to the first sub-electrode for controlling movement of the first reflector in cooperation with the first sub-electrode,
The light emitting layer further comprises a second electrode plate, the second electrode plate is adjacent to the second sub-electrode and is opposite to the first electrode plate along the second direction, and the second electrode plate is used for being matched with the second sub-electrode to control the second reflecting plate to move.
9. The display panel of claim 8, wherein when the first sub-electrode applies a voltage of a second polarity, the first electrode plate applies a voltage of a first polarity to control the first light reflecting plate to approach the first sub-electrode along the first preset direction, and when the first sub-electrode stops applying the voltage or applies the voltage of the first polarity, the second electrode applies the voltage of the second polarity to control the first light reflecting plate to be away from the first sub-electrode along the first preset direction to adjust an area exposing the second fluid;
When the second sub-electrode is applied with a voltage of a first polarity, the second electrode plate is applied with a voltage of a second polarity so as to control the second reflecting plate to be close to the second sub-electrode along the second preset direction, and when the second sub-electrode stops applying the voltage or applies the voltage of the second polarity, the second electrode plate is applied with the voltage of the first polarity so as to control the second reflecting plate to be far away from the second sub-electrode along the second preset direction so as to adjust the area exposing the second fluid.
10. A display device comprising a power module and the display panel according to any one of claims 1 to 9, wherein the power module is configured to supply driving power to the display panel to drive the display panel to perform image display.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410445340.9A CN118311814A (en) | 2024-04-12 | 2024-04-12 | Display panel and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410445340.9A CN118311814A (en) | 2024-04-12 | 2024-04-12 | Display panel and display device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118311814A true CN118311814A (en) | 2024-07-09 |
Family
ID=91729699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410445340.9A Pending CN118311814A (en) | 2024-04-12 | 2024-04-12 | Display panel and display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN118311814A (en) |
-
2024
- 2024-04-12 CN CN202410445340.9A patent/CN118311814A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP6877910B2 (en) | Display device | |
| KR100765138B1 (en) | Backlight assembly and liquid crystal display device using thereof | |
| US11675223B2 (en) | Display device | |
| TWI403802B (en) | Backlight assembly provided with an improved light guiding plate and a display device provided with the same | |
| EP0786679A2 (en) | Electrostatically-driven light modulator and display | |
| US10509246B2 (en) | Display panel and driving and manufacturing method thereof, and display device | |
| CN105579900A (en) | Method and apparatus for front-lit semi-retro-reflective display | |
| EP2074474A1 (en) | Controllable light guide | |
| US8054421B2 (en) | Reflective display panel and method for manufacturing such a display panel | |
| EP2385424A1 (en) | Display element and electrical device | |
| US20120133690A1 (en) | Display element and electrical device | |
| KR20040087464A (en) | Liquid crystal display device | |
| JP2006524360A (en) | Electrophoretic display device | |
| KR100427840B1 (en) | Reflective liquid crystal display device | |
| CN114114744B (en) | Display device | |
| CN118311814A (en) | Display panel and display device | |
| US11705076B2 (en) | Cholesteric liquid crystal composite display device | |
| JP2005523470A (en) | Electro-optic display | |
| CN114677928A (en) | Display panel, display device and driving method | |
| US7609436B2 (en) | Electro-optically active device | |
| CN117289514B (en) | Anti-press reflective display device and manufacturing method thereof | |
| CN217561884U (en) | Display device | |
| CN116469990B (en) | Display device and display apparatus | |
| US10613408B2 (en) | Luminous display substrate, display panel and method of controlling the same, and display apparatus | |
| KR100464207B1 (en) | A reflective field-sequential liquid crystal display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |