CN108681178B - Electronic paper display panel, manufacturing method thereof and electronic paper display device - Google Patents
Electronic paper display panel, manufacturing method thereof and electronic paper display device Download PDFInfo
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- CN108681178B CN108681178B CN201810717110.8A CN201810717110A CN108681178B CN 108681178 B CN108681178 B CN 108681178B CN 201810717110 A CN201810717110 A CN 201810717110A CN 108681178 B CN108681178 B CN 108681178B
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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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- 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
- G02F1/1341—Filling or closing of cells
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—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
- G02F2001/1678—Constructional details characterised by the composition or particle type
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Abstract
The invention discloses an electronic paper display panel, a manufacturing method thereof and an electronic paper display device. The electronic paper display panel comprises a plurality of pixel units arranged in a matrix manner, a first substrate, a second substrate and a first barrier layer, wherein the first substrate and the second substrate are oppositely arranged, the first barrier layer is positioned on the first substrate, and a first plasma injection channel and a second plasma injection channel are arranged in the first barrier layer; plasma is arranged in the first plasma injection channel and the second plasma injection channel, the plasma in the first plasma injection channel at least comprises first color chromogenic particles, and the plasma in the second plasma injection channel at least comprises second color chromogenic particles; wherein the first color and/or the second color is a chromatic color. According to the technical scheme provided by the embodiment of the invention, the electronic paper display device with the electronic paper display panel can perform color display.
Description
Technical Field
The embodiment of the invention relates to an electronic paper display technology, in particular to an electronic paper display panel, a manufacturing method thereof and an electronic paper display device.
Background
With the rapid development of electronic technologies and the increasing environmental protection pressure, people are eager for a medium integrating the dual advantages of the traditional paper and the modern digital technologies, so that the electronic paper technology is produced and developed rapidly, and the electronic paper display panel is widely applied to electronic readers (such as electronic books and electronic newspapers) or other electronic devices.
In the prior art, an electronic paper display panel includes an array substrate, an opposite substrate opposite to the array substrate, and an electrophoretic film located between the array substrate and the opposite substrate, where the array substrate includes a pixel electrode layer, the opposite substrate includes a common electrode layer, an electric field can be formed between the pixel electrode layer and the common electrode layer, and in the electrophoretic film, a plurality of black and white particles with positive and negative charges are sealed in microcapsules, and due to the difference of the electric field between the pixel electrode layer and the common electrode layer, different aggregation is generated at one side close to a light-emitting surface of the electronic paper display panel, thereby exhibiting a black or white display effect. Since only the charged particles of two colors of black and white exist in the electrophoretic film, the electronic paper display device can perform only black-and-white display and cannot perform color display.
Disclosure of Invention
The invention provides an electronic paper display panel, a manufacturing method thereof and an electronic paper display device, and aims to realize color display of the electronic paper display device.
In a first aspect, the present invention provides an electronic paper display panel, where the electronic paper display panel includes a plurality of pixel units arranged in a matrix, and is characterized by further including a first substrate and a second substrate that are oppositely disposed, and a first barrier layer located on the first substrate, where a first plasma injection channel and a second plasma injection channel are disposed in the first barrier layer;
the first plasma injection channel and the second plasma injection channel are both comb-shaped, the first plasma injection channel comprises a first comb handle part and a plurality of first comb tooth parts, and the second plasma injection channel comprises a second comb handle part and a plurality of second comb tooth parts; the first comb tooth parts and the second comb tooth parts are alternately arranged between the first comb handle part and the second comb handle part at intervals; the first and second handle portions each extend in a first direction; the first comb handle part comprises a first plasma input end, the second comb handle part comprises a second plasma input end, and the first plasma input end and the second plasma input end are respectively provided with a first sealing retaining wall and a second sealing retaining wall;
the vertical projection of the same row of the pixel units on the first substrate is positioned in the vertical projection of the same first comb tooth part or the same second comb tooth part on the first substrate;
plasma is arranged in the first plasma injection channel and the second plasma injection channel, the plasma in the first plasma injection channel at least comprises first color chromogenic particles, and the plasma in the second plasma injection channel at least comprises second color chromogenic particles;
wherein the first color and/or the second color is a chromatic color.
In a second aspect, the present invention further provides an electronic paper display device, which includes the electronic paper display panel of the first aspect.
In a third aspect, the present invention further provides a method for manufacturing an electronic paper display panel, which is used for manufacturing the electronic paper display panel of the first aspect, and the method for manufacturing the electronic paper display panel includes:
forming the first substrate;
forming a first barrier material layer on the first substrate;
patterning the first barrier material layer to form the first plasma injection channel having a first plasma inlet at the first plasma input end and the second plasma injection channel having a second plasma inlet at the second plasma input end;
forming the second substrate;
forming a plasma box;
injecting the corresponding plasma from the first plasma inlet and the second plasma inlet, respectively;
forming the first sealing dam at the first plasma input end to seal the first plasma inlet; forming the second sealing dam at the second plasma input end to seal the second plasma inlet.
The electronic paper display panel provided by the embodiment of the invention comprises a plurality of pixel units arranged in a matrix, a first substrate, a second substrate and a first barrier layer, wherein the first substrate and the second substrate are oppositely arranged, the first barrier layer is positioned on the first substrate, a first plasma injection channel and a second plasma injection channel are arranged in the first barrier layer, the first plasma injection channel and the second plasma injection channel are both in a comb shape, the first plasma injection channel comprises a first comb handle part and a plurality of first comb tooth parts, the second plasma injection channel comprises a second comb handle part and a plurality of second comb tooth parts, the vertical projection of the same row of pixel units on the first substrate is positioned in the vertical projection of the same first comb tooth part or the same second comb tooth part on the first substrate, plasmas are arranged in the first plasma injection channel and the second plasma injection channel, and the plasmas in the first plasma injection channel at least comprise first color developing particles, the plasma in the second plasma injection channel at least comprises a second color of color-developing particles, wherein the first color and/or the second color are/is colored. By arranging the electronic paper display panel with the structure, the pixel unit corresponding to the first plasma injection channel can at least display a first color, and the pixel unit and the second plasma injection channel can at least display a second color, so that the electronic paper display device with the electronic paper display panel can display color.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments made with reference to the following drawings:
fig. 1 is a schematic top view of an electronic paper display panel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view taken along the dashed line AB of FIG. 1;
fig. 3 is a schematic top view of another electronic paper display panel according to an embodiment of the present disclosure;
fig. 4 is a schematic top view of another electronic paper display panel according to an embodiment of the present disclosure;
FIG. 5 is a schematic cross-sectional view taken along the dashed line CD in FIG. 4;
fig. 6 is a schematic top view of the second barrier layer of fig. 5;
FIG. 7 is a schematic view of a further cross-sectional structure taken along the dashed line CD in FIG. 4;
figure 8 is a schematic top view of the second barrier layer of figure 5;
FIG. 9 is a schematic diagram of a structure of plasma particles according to an embodiment of the present invention;
fig. 10 is a schematic cross-sectional view illustrating an electronic paper display panel according to an embodiment of the present invention;
FIG. 11 is a schematic cross-sectional view taken along the dashed line EF in FIG. 4;
fig. 12 is a schematic structural diagram of an electronic paper display device according to an embodiment of the present invention;
fig. 13 is a schematic flow chart of a method for manufacturing an electronic paper display panel according to an embodiment of the present invention.
Detailed Description
To further illustrate the technical means and effects of the present invention adopted to achieve the predetermined objects, the following detailed description of the embodiments, structures, features and effects of the display panel and the manufacturing method thereof according to the present invention will be made with reference to the accompanying drawings and preferred embodiments.
The embodiment of the invention provides an electronic paper display panel, which comprises a plurality of pixel units arranged in a matrix manner, and is characterized by also comprising a first substrate, a second substrate and a first barrier layer, wherein the first substrate and the second substrate are oppositely arranged, the first barrier layer is positioned on the first substrate, and a first plasma injection channel and a second plasma injection channel are arranged in the first barrier layer;
the first plasma injection channel and the second plasma injection channel are both comb-shaped, the first plasma injection channel comprises a first comb handle part and a plurality of first comb tooth parts, and the second plasma injection channel comprises a second comb handle part and a plurality of second comb tooth parts; the first comb tooth parts and the second comb tooth parts are alternately arranged between the first comb handle part and the second comb handle part at intervals; the first and second comb handle portions each extend in a first direction; the first comb handle part comprises a first plasma input end, the second comb handle part comprises a second plasma input end, and the first plasma input end and the second plasma input end are respectively provided with a first sealing retaining wall and a second sealing retaining wall;
the vertical projection of the same row of pixel units on the first substrate is positioned in the vertical projection of the same first comb tooth part or the same second comb tooth part on the first substrate;
plasma is arranged in the first plasma injection channel and the second plasma injection channel, the plasma in the first plasma injection channel at least comprises the chromogenic particles of the first color, and the plasma in the second plasma injection channel at least comprises the chromogenic particles of the second color;
wherein the first color and/or the second color is a chromatic color. Color means colors other than white and black, and typically means red, blue, green, yellow, cyan, and the like.
The electronic paper display panel provided by the embodiment of the invention comprises a plurality of pixel units arranged in a matrix, a first substrate, a second substrate and a first barrier layer, wherein the first substrate and the second substrate are oppositely arranged, the first barrier layer is positioned on the first substrate, a first plasma injection channel and a second plasma injection channel are arranged in the first barrier layer, the first plasma injection channel and the second plasma injection channel are both in a comb shape, the first plasma injection channel comprises a first comb handle part and a plurality of first comb tooth parts, the second plasma injection channel comprises a second comb handle part and a plurality of second comb tooth parts, the vertical projection of the same row of pixel units on the first substrate is positioned in the vertical projection of the same first comb tooth part or the same second comb tooth part on the first substrate, plasmas are arranged in the first plasma injection channel and the second plasma injection channel, and the plasmas in the first plasma injection channel at least comprise first color developing particles, the plasma in the second plasma injection channel at least comprises the color-developing particles of the second color, wherein the first color and/or the second color are/is colorful. By arranging the electronic paper display panel with the structure, the pixel unit corresponding to the first plasma injection channel can at least display a first color, and the pixel unit and the second plasma injection channel can at least display a second color, so that the electronic paper display device with the electronic paper display panel can display color.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without any creative work belong to the protection scope of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other embodiments that depart from the specific details disclosed herein, and it will be recognized by those skilled in the art that the present invention may be practiced without these specific details.
Next, the present invention is described in detail with reference to the schematic drawings, and in the detailed description of the embodiments of the present invention, the schematic drawings showing the structure of the device are not partially enlarged in general scale for convenience of description, and the schematic drawings are only examples, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and height should be included in the actual fabrication.
Fig. 1 is a schematic top view of an electronic paper display panel according to an embodiment of the present invention. Fig. 2 is a schematic sectional view along a broken line AB in fig. 1. As shown in fig. 1 and 2, the e-paper display panel includes a plurality of pixel units 10 arranged in a matrix, the e-paper display panel further includes a first substrate 100 and a second substrate 200 disposed opposite to each other, and a first barrier layer 300 disposed on the first substrate 100, a first plasma injection channel 20 and a second plasma injection channel 30 are disposed in the first barrier layer 300, the first plasma injection channel 20 and the second plasma injection channel 30 are both comb-shaped, the first plasma injection channel 20 includes a first comb portion 21 and a plurality of first comb portions 22, the second plasma injection channel 30 includes a second comb portion 31 and a plurality of second comb portions 32, the first comb portions 22 and the second comb portions 32 are alternately disposed between the first comb portion 21 and the second comb portion 31, the first comb portion 21 and the second comb portion 31 both extend in a first direction X, the first comb portion 21 includes a first plasma input end 210, the second comb part 31 includes a second plasma input end 310, and the first plasma input end 210 and the second plasma input end 310 are respectively provided with a first sealing wall 211 and a second sealing wall 311. The vertical projection of the same row of pixel units 10 on the first substrate 100 is located within the vertical projection of the same first comb-tooth portion 22 or the same second comb-tooth portion 32 on the first substrate 100. In the present embodiment, plasma is disposed in the first plasma injection channel 20 and the second plasma injection channel 30, the plasma in the first plasma injection channel 20 at least includes color-developing particles of a first color, and the plasma in the second plasma injection channel 30 at least includes color-developing particles of a second color, wherein the first color and/or the second color are/is a color.
It should be noted that, in the present embodiment, the plasma is filled into the first plasma injection channel 20 and the second plasma injection channel 30 through an injection process, and for convenience of description, the plasma in the first plasma injection channel 20 is used as the first plasma, and the plasma in the second plasma injection channel 30 is used as the second plasma. Specifically, the inlet of the first plasma injection channel 20 is sealed by the first sealing wall 211, and the inlet of the second plasma injection channel 30 is sealed by the second sealing wall 311, so as to prevent the injected first plasma and second plasma from flowing out of the corresponding plasma injection channels.
It should be noted that the pixel unit 10 corresponding to the first plasma injection channel 20 can display at least a first color, and the pixel unit 10 corresponding to the second plasma injection channel 30 can display at least a second color, so that the electronic paper display device formed by the electronic paper display panel in this embodiment can display at least a picture including the first color and the second color, and on the other hand, at least one of the first color and the second color is a color, so that the electronic paper display device formed by the electronic paper display panel in this embodiment can implement color display. Illustratively, the first plasma and the second plasma may be the same and each include two kinds of color-developing particles, such as black color-developing particles and red color-developing particles, wherein the black color-developing particles may be positively charged and the red color-developing particles may be negatively charged. For the case that the side of the first substrate 100 far from the second substrate 200 is the image display side of the e-paper display panel, when the electric field applied to the first plasma and the second plasma is the forward electric field of the first substrate 100 pointing to the second substrate 200, the red color-developing particles move to the surface near the image display side, the black particles move to the surface far from the image display side, and the corresponding pixel unit 10 displays red color; when the electric field applied to the first plasma and the second plasma is a reverse electric field in which the first substrate 100 is directed to the second substrate 200, the red color particles move to the surface away from the image display side, the black particles move to the surface close to the image display side, and the corresponding display cell displays black. Based on the above principle, the display color of each pixel unit 10 can be adjusted by respectively controlling the direction or intensity of the electric field applied to the first plasma or the second plasma corresponding to each pixel unit 10, thereby realizing the display of the image.
The electronic paper display panel provided by this embodiment includes a plurality of pixel units 10 arranged in a matrix, a first substrate 100 and a second substrate 200 arranged oppositely, and a first barrier layer 300 located on the first substrate 100, wherein a first plasma injection channel 20 and a second plasma injection channel 30 are arranged in the first barrier layer 300, both the first plasma injection channel 20 and the second plasma injection channel 30 are comb-shaped, the first plasma injection channel 20 includes a first comb-tooth portion 21 and a plurality of first comb-tooth portions 22, the second plasma injection channel 30 includes a second comb-tooth portion 31 and a plurality of second comb-tooth portions 32, a vertical projection of the same row of pixel units 10 on the first substrate 100 is located in a vertical projection of the same first comb-tooth portion 22 or the same second comb-tooth portion 32 on the first substrate 100, plasmas are arranged in the first plasma injection channel 20 and the second plasma injection channel 30, the first plasma injection channel 20 at least includes a first color developing particle, the plasma in the second plasma injection channel 30 at least comprises the color-developing particles of the second color, wherein the first color and/or the second color is a color. By providing the e-paper display panel with the above structure, the pixel unit 10 corresponding to the first plasma injection channel 20 can display at least a first color, and the second plasma injection channel 30 can display at least a second color, so that the e-paper display device with the e-paper display panel can display colors.
Optionally, with continued reference to fig. 1, along the first direction X, the first plasma input 210 and the second plasma input 310 are disposed at one end of the first comb portion 21 and the second comb portion 31, respectively.
For example, fig. 3 is a schematic top view structure diagram of another electronic paper display panel according to an embodiment of the present invention. The structure of the e-paper display panel shown in fig. 3 is similar to that of the e-paper display panel shown in fig. 1, except that in fig. 3, along the vertical direction Y of the first direction X, the first plasma input end 210 is disposed at one end of the first comb-handle portion 21 away from the first comb-tooth portions 22, and the second plasma input end 310 is disposed at one end of the second comb-handle portion 31 away from the second comb-tooth portions 32.
It should be noted that the position of the first plasma input end 210 in the first plasma injection passage 20 and the position of the second plasma input end 310 in the second plasma injection passage 30 are not limited to those shown in fig. 1 and 3, and may be other positions. For example, the first plasma input end 210 is disposed at an end of the first comb handle portion 21 away from the plurality of first comb teeth 22 along the first direction X, and the second plasma input end 310 is disposed at an end of the second comb handle portion 31 away from the plurality of second comb teeth 32 along the vertical direction Y of the first direction X, which is not limited in this embodiment. As long as the first plasma injection passage 20 can communicate with the outside through the first plasma input end 210 and the second plasma injection passage 30 can also communicate with the outside through the second plasma input end 310 without the first and second sealing structures.
Fig. 4 is a schematic top view of another electronic paper display panel according to an embodiment of the present invention. Fig. 5 is a schematic cross-sectional view along the dashed line CD in fig. 4. The structure of the electronic paper display panel shown in fig. 4 is similar to that of the electronic paper display panel shown in fig. 1, except that, as shown in fig. 5, the electronic paper display panel shown in fig. 4 further includes a second barrier layer 400 located on the second substrate 200 and a first cover layer 500 located on a side of the second barrier layer 400 away from the second substrate 200, and the second barrier layer 400 is provided with a third plasma injection channel 40. Fig. 6 is a schematic top view of the second barrier layer of fig. 5. As shown in fig. 6, the third plasma injecting channel 40 is comb-shaped and includes a third comb portion 41 and a plurality of third comb teeth 42, the third comb portion 41 extends along the first direction X, the third comb portion 41 includes a third plasma input end 410, and the third plasma input end 410 is provided with a third sealing wall 411. With continued reference to fig. 4, the perpendicular projection of the third comb handle portion 41 onto the first substrate 100 coincides with the perpendicular projection of the first comb handle portion 21 or the second comb handle portion 31 onto the first substrate 100. The vertical projection of the same row of pixel units 10 on the first substrate 100 is located in the vertical projection of the same third comb-tooth portion 42 on the first substrate 100, a pixel row gap is arranged between each first comb-tooth portion 22 and the second comb-tooth portion 32 on the same side of the first comb-tooth portion, the third comb-tooth portions 42 are in one-to-one correspondence with the pixel row gaps, and the vertical projection of each third comb-tooth portion 42 on the first substrate 100 is located in the vertical projection of the corresponding pixel row gap on the first substrate 100. In this embodiment, the third plasma injecting passage 40 is provided with plasma therein, and the plasma in the third plasma injecting passage 40 at least includes the color-developing particles of the third color.
More specifically, referring to fig. 5, the first barrier layer 300 is not provided with a plasma injection channel at a position corresponding to the third comb portion of the second barrier layer 400, the second barrier layer 400 is not provided with a plasma injection channel at the first comb portion and the second comb portion of the first barrier layer 300, and since the first barrier layer 300 and the second barrier layer 400 are formed by using a transparent material in the region except the plasma injection channel, no matter which substrate of the first substrate 100 and the second substrate 300 is closer to the image display side in such an arrangement, light can reach the surfaces of the first plasma, the second plasma, and the third plasma, so that the electronic paper display panel can display colors of the color-developing particles distributed in the first plasma, the second plasma, and the third plasma close to the image display side.
Illustratively, the first cover layer 500 is attached to a side of the second barrier layer 400 away from the second substrate 200, and is used for sealing the third plasma in the third plasma injection channel 40 of the second substrate 200, so that the third plasma does not flow out from a side of the third plasma injection channel 40 close to the first barrier layer 300 during the third plasma injection. It is noted that the third comb portion and the first or second comb portion have an overlapping portion in the lamination direction of the first and second substrates 100 and 200, and thus the first cover layer 500 is disposed such that plasma in the two comb portions having the overlapping portion can be isolated.
Fig. 7 is a schematic view of another cross-sectional structure along the dashed line CD in fig. 4. As shown in fig. 7, on the basis of the above embodiment, the electronic paper display panel may further include a second cover layer 510 on a side of the first barrier layer 300 away from the first substrate 100.
Illustratively, the second cover layer 510 is attached to a side of the first barrier layer 300 away from the first substrate 100, and is used for sealing the first plasma in the first plasma injection channel 20 and the second plasma in the second plasma injection channel 30 in the first substrate 100, so that the first plasma and the second plasma are injected without flowing out from a side of the corresponding plasma injection channel close to the second barrier layer 400.
In other embodiments of this embodiment, the first cover layer 500 and the second cover layer 510 may also be respectively attached to the side of the second barrier layer 400 away from the second substrate 200 and the side of the first barrier layer 300 away from the first substrate 100, which is not specifically limited in this embodiment.
Alternatively, the first cover layer 500 and the second cover layer 510 may be flexible PI films. The flexible PI film has good transparency and small thickness, is convenient to attach to the barrier layer, can better seal the corresponding plasma injection channel, and cannot influence the normal display of the electronic paper display panel.
It should be noted that, for convenience of description, the plasma in the third plasma injection passage 40 is used as the third plasma. The pixel unit 10 corresponding to the third plasma injection channel 40 can at least display a third color, and accordingly, the electronic paper display device formed by the electronic paper display panel in this embodiment can at least display a picture including the first color, the second color and the third color, and on the other hand, at least one of the first color and the second color is a color, so that the electronic paper display device formed by the electronic paper display panel in this embodiment can realize color display. Illustratively, the first plasma, the second plasma and the third plasma may each include black color particles and one color particle, the black color particles may be positively charged, and the color particles may be negatively charged, wherein the color particles in the first plasma, the second plasma and the third plasma may be red color particles, green color particles and blue color particles, respectively. For the case that the side of the first substrate 100 far from the second substrate 200 is the image display side of the e-paper display panel, when the electric field applied to the first plasma and the second plasma is the forward electric field of the first substrate 100 pointing to the second substrate 200, the color particles in the first plasma, the second plasma and the third plasma move to the surface near the image display side, the black particles move to the surface far from the image display side, and the corresponding pixel unit 10 displays the color of the color particles; when the electric field applied to the first plasma and the second plasma is a reverse electric field of the first substrate 100 pointing to the second substrate 200, the color particles in the first plasma, the second plasma, and the third plasma move to the surface far away from the image display side, the black particles move to the surface near the image display side, and the corresponding display unit displays black. Based on the above principle, the display color of each pixel unit 10 can be adjusted by controlling the direction or intensity of the electric field applied to the first plasma, the second plasma or the third plasma corresponding to each pixel unit 10, so as to realize the display of the image.
Illustratively, with continued reference to fig. 6, a third plasma input 410 is disposed at one end of the third comb portion 41 along the first direction X. In other embodiments of this embodiment, the third plasma input end 410 can be disposed as follows: in a direction Y perpendicular to the first direction X, the third plasma input end 410 is disposed at an end of the third comb-tooth portion 41 away from the plurality of third comb-tooth portions 42, as shown in fig. 8.
Alternatively, the first color, the second color, and the third color may be one of red, green, and blue, respectively.
It should be noted that, red, green and blue are three primary colors of light, and the electronic paper display device can display different colors by combining the pixel units 10 with the three colors, so that the first color, the second color and the third color can be set to be red, green and blue, respectively, and then the pixel units 10 corresponding to the first plasma, the second plasma and the third plasma can display red, green and blue, respectively, so that the electronic paper display device can realize full-color display.
FIG. 9 is a schematic diagram of a structure of plasma particles according to an embodiment of the present invention. As shown in fig. 9, the plasma particles include host particles 810, black color particles 811, and color particles 812, and the black color particles 811 and the color particles 812 are respectively distributed on the opposite end surfaces of the host particles 810. Specifically, the color particles 812 in the first plasma have a first color, the color particles 812 in the second plasma have a second color, and the color particles 813 in the third plasma have a third color. Correspondingly, in the plasma in the first plasma injection channel 20, the black color-developing particles 811 and the first color-developing particles are respectively distributed on two opposite end surfaces of the main body particle 810; in the plasma in the second plasma injection channel 30, the black color-developing particles 811 and the second color-developing particles are distributed on two opposite end surfaces of the main particle 810 respectively; in the plasma in the third plasma injection channel 40, the black color particles 811 and the third color particles are distributed on two opposite end surfaces of the main particle 810, respectively.
Illustratively, the plasma may be a mixture of liquid crystal and special dye powder, wherein the host particles 810 may be liquid crystal molecules, and the black color developing particles 811 and the color developing particles 812 may be color charged particles in color powder. The black particles 811 and the color particles 812 from the special dye powder are small in size due to the small particle size in the special dye powder, and the black particles 811 and the color particles 812 are charged with electric charges opposite to each other (for example, as shown in fig. 9, the black particles 811 may be charged with positive charges, and the color particles 812 may be charged with negative charges), and can be adsorbed on the end surfaces of the main particles 810 opposite in polarity at the two ends, respectively, when the plasma is in the electric field. In the present embodiment, the rotation of the host particle 810 is related to the electric field intensity (absolute value of electric field voltage) regardless of the direction of the electric field, and the movement of the color particles is related to the direction of the electric field. Specifically, when the direction of the electric field applied to the plasma changes, the positions of the black color particles 811 and the color particles 812 are exchanged, and the polarities of both ends of the host particles 810 where the color particles are distributed are also changed to opposite polarities, so that the black color particles 811 and the color particles 812 can still be adsorbed on the end surfaces of the host particles 810 after the positions are exchanged. It is understood that if the electric field strength is not changed when the electric field direction is changed, the position of the host particle 810 is not changed, and only the polarity of the end portion is changed. On the other hand, when the electric field intensity changes, the main particles 810 rotate by a corresponding angle, the black color particles 811 and the color particles 812 adsorbed at the end of the main particles 810 also rotate along with the liquid crystal molecules, and the distance between the color particles near the image display side of the electronic paper display panel and the surface of the electronic paper display panel near the user changes, so that the gray scale of the corresponding pixel unit in the electronic paper display device changes.
It should be noted that the structure of the plasma particles in this embodiment is not limited to that shown in fig. 9, and other structures, such as an electrophoretic layer structure with microcapsules, may be used.
In this embodiment, the electronic paper display panel may further include a first electrode layer and a second electrode layer, the first electrode layer includes a common electrode, a vertical projection of the common electrode on the first substrate covers vertical projections of the first plasma injection channel, the second plasma injection channel, and the third plasma injection channel on the first substrate, the second electrode layer includes a plurality of pixel electrode blocks, the pixel electrodes are in one-to-one correspondence with the pixel units, and a vertical projection of each pixel unit on the first substrate covers the corresponding pixel electrode.
For example, as shown in fig. 5, the first substrate 100 and the second substrate 200 may be an array substrate and an opposite substrate, respectively, the second electrode layer including a plurality of pixel electrode blocks 701 is located on the first barrier layer 300 at a side away from the first substrate 100, and the first electrode layer including the common electrode 601 is located on the second barrier layer 400 at a side away from the second substrate 200.
Alternatively, the first substrate 100 and the second substrate 200 may also be an opposite substrate and an array substrate, respectively, a first electrode layer including a common electrode 601 is located on a side of the first barrier layer 300 away from the first substrate 100, and a second electrode layer including a plurality of pixel electrode blocks 701 is located on a side of the second barrier layer 400 away from the second substrate 200, as shown in fig. 10.
It should be noted that, in fig. 5 and fig. 10, the first electrode layer and the second electrode layer are disposed at positions such that the first plasma, the second plasma, and the third plasma are all relatively close to the common electrode 601 and the pixel electrode block 701, so that the color development in the first plasma, the second plasma, and the third plasma can be better controlled, and the display effect of the electronic paper display device is improved.
Fig. 11 is a schematic sectional view along a broken line EF in fig. 4. As shown in fig. 4 and 11, the second electrode layer further includes a first auxiliary electrode 702 and a second auxiliary electrode 703. The perpendicular projections of the first auxiliary electrode 702 and the second auxiliary electrode 703 on the first substrate 100 cover the perpendicular projections of the first comb-handle portion 21 and the second comb-handle portion 31 on the first substrate 100, respectively. Further, the plasma includes black color particles, a first electric field is formed between the first auxiliary electrode 702 and the common electrode 601, the black color particles move to the common electrode 601 side under the first electric field and are held at the common electrode 601 side, a second electric field is formed between the second auxiliary electrode 703 and the common electrode 601, and the black color particles move to the common electrode 601 side under the second electric field and are held at the common electrode 601 side.
Illustratively, as shown in fig. 4, the first auxiliary electrode 702 and the second auxiliary electrode 703 are both located outside the pixel unit array, i.e., in the non-display area of the e-paper display panel.
It should be noted that, as can be seen from fig. 4, the regions corresponding to the first comb-handle portion 21, the second comb-handle portion 31, and the third comb-handle portion 41 are located in the non-display region and are not used for displaying the image to be displayed, and the regions can be controlled to display black by providing the first auxiliary electrode 702 and the second auxiliary electrode 703, so that the regions do not need to be covered by a frame or the like.
For example, in the case where the black color particles and the other color particles in the plasma have different charge polarities, the black color particles can be moved and held on the common electrode 601 side by adjusting the polarities of the electric fields between the first auxiliary electrode 702 and the common electrode 601 and between the second auxiliary electrode 703 and the common electrode 601. For example, the black color particles may be positively charged, the other color particles in the plasma may be negatively charged, a negative voltage is applied to the common electrode 601, and a positive voltage is applied to the first auxiliary electrode 702 and the second auxiliary electrode 703, so that the negatively charged black color particles move toward the common electrode 601 and are held on the common electrode 601 based on the principle of opposite attraction of charges. Similarly, for the case where the voltage applied to the common electrode 601 is 0, the polarity of the voltage on the first auxiliary electrode 702 and the second auxiliary electrode 703 may be set to be opposite to the polarity of the charges of the black color particles. In addition, in the case where the black color particles and part of the color particles in the plasma have the same charge polarity, the black color particles can be held on the common electrode 601 side by changing the electric field intensity. For example, the black color particles and the red color particles may both be positively charged, the size of the black color particles is smaller than that of the red color particles, and the other color particles are negatively charged, and the voltage on the first auxiliary electrode 702 and the second auxiliary electrode 703 may be adjusted according to the principle that the large-sized particles move slower than the small-sized particles at the same electric field intensity on the premise that a negative voltage is applied to the common electrode 601 and a positive voltage is applied to the first auxiliary electrode 702 and the second auxiliary electrode 703, so that the large-sized black color particles can be held on the common electrode 601 side.
Alternatively, the voltages of the first auxiliary electrode 702 and the second auxiliary electrode 703 may be the same. Due to the arrangement, the first auxiliary electrode 702 and the second auxiliary electrode 703 can use the same driving voltage, and then the same signal line can be adopted to provide voltage for the first auxiliary electrode and the second auxiliary electrode simultaneously, so that the beneficial effects of simplifying the structure of the electronic paper display panel and reducing the preparation difficulty of the electronic paper display panel are achieved.
Fig. 12 is a schematic structural diagram of an electronic paper display device according to an embodiment of the present invention. As shown in fig. 12, the electronic paper display device 11 includes a display panel 12 of any embodiment of the present invention.
Fig. 13 is a schematic flow chart of a method for manufacturing an electronic paper display panel according to an embodiment of the present invention. The preparation method of the electronic paper display panel is used for preparing the electronic paper display panel in any embodiment of the invention. As shown in fig. 13, the method for manufacturing the electronic paper display panel may specifically include the following steps:
step 1, forming a first substrate.
And 2, forming a first barrier material layer on the first substrate.
For example, the first barrier material layer may be formed using a resin material.
And 3, patterning the first barrier material layer to form a first plasma injection channel with a first plasma inlet and a second plasma injection channel with a second plasma inlet, wherein the first plasma inlet is positioned at the first plasma input end, and the second plasma inlet is positioned at the second plasma input end.
It should be noted that the first barrier material layer may be patterned by wet etching.
And 4, forming a second substrate.
And 5, forming the plasma box.
In this embodiment, forming the plasma chamber specifically includes attaching the second substrate to a side of the patterned first barrier layer away from the first substrate.
And 6, injecting corresponding plasmas from the first plasma inlet and the second plasma inlet respectively.
Specifically, injecting the corresponding plasma from the first plasma inlet and the second plasma inlet respectively includes injecting a first plasma from the first plasma inlet and injecting a second plasma from the second plasma inlet, so that the first plasma and the second plasma fill the first plasma injection passage and the second plasma injection passage respectively.
And 7, forming a first sealing retaining wall at the first plasma input end to seal the first plasma inlet, and forming a second sealing retaining wall at the second plasma input end to seal the second plasma inlet.
For example, the first and second sealing barriers may be formed by coating and curing the frame sealing adhesive on the first or second substrate.
For example, on the basis of the above embodiments, after forming the second substrate, the forming of the second substrate may further include forming a second barrier material layer on the second substrate, patterning the second barrier material layer to form a third plasma injection channel having a third plasma inlet, the third plasma inlet being located at a third plasma input end, attaching the first cover layer to a side of the patterned second barrier material layer away from the second substrate, injecting corresponding plasma from the third plasma inlet, and forming a third sealing barrier wall at the third plasma input end to seal the third plasma inlet.
It should be noted that, the step of forming the plasma box specifically includes attaching the patterned first barrier material layer to the side of the first cover layer away from the second substrate.
Optionally, the patterning of the first barrier material layer may further include attaching the second cover layer to a side of the patterned first barrier material layer away from the first substrate. Correspondingly, the step of forming the plasma box at this time specifically includes attaching the first cover layer and the second cover layer.
Further, on the basis of the foregoing embodiment, after patterning the first barrier material layer, a first conductive layer may be formed on a side of the patterned first barrier material layer away from the first substrate, and correspondingly, after patterning the second barrier material layer, a second conductive layer may be formed on a side of the patterned second barrier material layer away from the second substrate, where the first conductive layer is a first electrode layer and the second conductive layer is a second electrode layer, or the first conductive layer is a second electrode layer and the second conductive layer is a first electrode layer.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (15)
1. An electronic paper display panel comprises a plurality of pixel units arranged in a matrix manner, and is characterized by further comprising a first substrate, a second substrate and a first barrier layer, wherein the first substrate and the second substrate are oppositely arranged, the first barrier layer is positioned on the first substrate, and a first plasma injection channel and a second plasma injection channel are arranged in the first barrier layer;
the first plasma injection channel and the second plasma injection channel are both comb-shaped, the first plasma injection channel comprises a first comb handle part and a plurality of first comb tooth parts, and the second plasma injection channel comprises a second comb handle part and a plurality of second comb tooth parts; the first comb tooth parts and the second comb tooth parts are alternately arranged between the first comb handle part and the second comb handle part at intervals; the first and second handle portions each extend in a first direction; the first comb handle part comprises a first plasma input end, the second comb handle part comprises a second plasma input end, and the first plasma input end and the second plasma input end are respectively provided with a first sealing retaining wall and a second sealing retaining wall;
the vertical projection of the same row of the pixel units on the first substrate is positioned in the vertical projection of the same first comb tooth part or the same second comb tooth part on the first substrate;
plasma is arranged in the first plasma injection channel and the second plasma injection channel, the plasma in the first plasma injection channel at least comprises first color chromogenic particles, and the plasma in the second plasma injection channel at least comprises second color chromogenic particles;
wherein the first color and/or the second color is a chromatic color;
the electronic paper display panel further comprises a second barrier layer positioned on the second substrate and a first covering layer positioned on one side, far away from the second substrate, of the second barrier layer, and the second barrier layer is provided with a third plasma injection channel;
the third plasma injection channel is comb-shaped and comprises a third comb handle part and a plurality of third comb tooth parts, the third comb handle part extends along the first direction, the third comb handle part comprises a third plasma input end, and a third sealing retaining wall is arranged at the third plasma input end;
a perpendicular projection of the third comb handle portion on the first substrate coincides with a perpendicular projection of the first or second comb handle portion on the first substrate;
the vertical projection of the pixel units in the same row on the first substrate is positioned in the vertical projection of the third comb tooth part on the first substrate;
pixel row gaps are formed between the first comb tooth parts and the second comb tooth parts on the same side of the first comb tooth parts, the third comb tooth parts correspond to the pixel row gaps one by one, and the vertical projection of each third comb tooth part on the first substrate is positioned in the vertical projection of the corresponding pixel row gap on the first substrate;
the third plasma injection channel is internally provided with the plasma, and the plasma in the third plasma injection channel at least comprises a third color of color-developing particles.
2. The e-paper display panel of claim 1, wherein the first and second plasma input ends are disposed at one end of the first and second comb portions, respectively, along the first direction; or, along the vertical direction of the first direction, the first plasma input end is arranged at one end of the first comb handle part far away from the plurality of first comb tooth parts, and the second plasma input end is arranged at one end of the second comb handle part far away from the plurality of second comb tooth parts.
3. The electronic paper display panel of claim 1, further comprising a second cover layer on a side of the first barrier layer away from the first substrate.
4. The e-paper display panel of claim 1, wherein the third plasma input end is disposed at one end of the third comb handle portion along the first direction; or, along the vertical direction of the first direction, the third plasma input end is arranged at one end of the third comb handle part far away from the plurality of third comb tooth parts.
5. The electronic paper display panel of claim 1, wherein the first color, the second color, and the third color are each one of red, green, and blue.
6. The e-paper display panel of claim 1, wherein the plasma further comprises host particles and black color-developing particles;
in the plasma in the first plasma injection channel, the black color-developing particles and the first color-developing particles are respectively distributed on the surfaces of two opposite end parts of the main body particles;
in the plasma in the second plasma injection channel, the black color-developing particles and the second color-developing particles are respectively distributed on the surfaces of two opposite end parts of the main body particles;
in the plasma in the third plasma injection channel, the black color-developing particles and the color-developing particles of the third color are respectively distributed on two opposite end surfaces of the main body particles.
7. The electronic paper display panel of claim 1, further comprising a first electrode layer and a second electrode layer; the first electrode layer comprises a common electrode, and the vertical projection of the common electrode on the first substrate covers the vertical projection of the first plasma injection channel, the second plasma injection channel and the third plasma injection channel on the first substrate; the second electrode layer comprises a plurality of pixel electrode blocks, the pixel electrodes correspond to the pixel units one by one, and the vertical projection of each pixel unit on the first substrate covers and corresponds to the pixel electrodes.
8. The electronic paper display panel of claim 7, wherein the first substrate and the second substrate are an array substrate and an opposite substrate, respectively;
the second electrode layer is located on one side, far away from the first substrate, of the first barrier layer, and the first electrode layer is located on one side, far away from the second substrate, of the second barrier layer.
9. The electronic paper display panel of claim 7, wherein the first substrate and the second substrate are a counter substrate and an array substrate, respectively;
the first electrode layer is located on one side, far away from the first substrate, of the first barrier layer, and the second electrode layer is located on one side, far away from the second substrate, of the second barrier layer.
10. The electronic paper display panel of claim 7, wherein the second electrode layer further comprises a first auxiliary electrode and a second auxiliary electrode, a perpendicular projection of the first auxiliary electrode and the second auxiliary electrode on the first substrate covers a perpendicular projection of the first comb-handle portion and the second comb-handle portion on the first substrate, respectively;
the plasma includes black color-developing particles, a first electric field is formed between the first auxiliary electrode and the common electrode, and the black color-developing particles move to the common electrode side under the first electric field and are held at the common electrode side; a second electric field is formed between the second auxiliary electrode and the common electrode, and the black color particles move to the common electrode side under the second electric field and remain at the common electrode side.
11. The electronic paper display panel of claim 10, wherein the first auxiliary electrode and the second auxiliary electrode are at the same voltage.
12. An electronic paper display device characterized by comprising the display panel according to any one of claims 1 to 11.
13. A method for manufacturing an electronic paper display panel, for manufacturing the electronic paper display panel according to any one of claims 1 to 11, comprising:
forming the first substrate;
forming a first barrier material layer on the first substrate;
patterning the first barrier material layer to form the first plasma injection channel having a first plasma inlet at the first plasma input end and the second plasma injection channel having a second plasma inlet at the second plasma input end;
forming the second substrate;
forming a plasma box;
injecting the corresponding plasma from the first plasma inlet and the second plasma inlet, respectively;
forming the first sealing dam at the first plasma input end to seal the first plasma inlet; forming the second sealing dam at the second plasma input end to seal the second plasma inlet;
wherein after the forming of the second substrate, further comprising:
forming a second barrier material layer on the second substrate;
patterning the second barrier material layer to form the third plasma injection channel having a third plasma inlet at the third plasma input end;
attaching the first covering layer to one side, far away from the second substrate, of the patterned second barrier material layer;
injecting a corresponding said plasma from a third plasma inlet;
forming the third sealing dam at the third plasma input end to seal the third plasma inlet.
14. The method of claim 13, wherein after the patterning the first barrier material layer, the method further comprises:
and attaching a second covering layer to one side of the patterned first barrier material layer far away from the first substrate.
15. The method of claim 13, wherein after the patterning the first barrier material layer, the method further comprises:
forming a first conductive layer on one side, far away from the first substrate, of the patterned first barrier material layer; in a corresponding manner, the first and second optical fibers are,
after the patterning the second barrier material layer, further comprising:
forming a second conductive layer on one side, far away from the second substrate, of the patterned second barrier material layer;
the first conducting layer is a first electrode layer, and the second conducting layer is a second electrode layer; or, the first conductive layer is the second electrode layer, and the second conductive layer is the first electrode layer.
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