CN117539102A - Electronic paper display panel and display device - Google Patents
Electronic paper display panel and display device Download PDFInfo
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- CN117539102A CN117539102A CN202311737629.XA CN202311737629A CN117539102A CN 117539102 A CN117539102 A CN 117539102A CN 202311737629 A CN202311737629 A CN 202311737629A CN 117539102 A CN117539102 A CN 117539102A
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- 239000000758 substrate Substances 0.000 claims abstract description 80
- 238000001962 electrophoresis Methods 0.000 claims abstract description 19
- 125000006850 spacer group Chemical group 0.000 claims description 26
- 239000003094 microcapsule Substances 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 13
- 239000002775 capsule Substances 0.000 claims description 9
- 239000011159 matrix material Substances 0.000 claims description 9
- 230000003071 parasitic effect Effects 0.000 abstract description 9
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 230000005684 electric field Effects 0.000 description 12
- 230000000694 effects Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000009977 dual effect Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/165—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on translational movement of particles in a fluid under the influence of an applied field
- G02F1/1675—Constructional details
- G02F1/1676—Electrodes
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
Abstract
The application discloses an electronic paper display panel and a display device, mainly relating to the technical field of display, wherein the electronic paper display panel comprises a first substrate, a first electrode layer, an electrophoresis layer, a second electrode layer and a second substrate, wherein the electrophoresis layer is arranged between the first substrate and the second substrate, the first electrode layer is arranged on one side of the first substrate, which is close to the electrophoresis layer, and the second electrode layer is arranged on one side of the second substrate, which is close to the electrophoresis layer; the first electrode layer comprises a plurality of first electrodes arranged at intervals, the first electrodes are in one-to-one correspondence with a plurality of pixel areas in the electronic paper display panel, a plurality of hollowed-out parts are arranged on the first electrode layer and/or the second electrode layer, and orthographic projection of the first electrodes covers orthographic projection of the hollowed-out parts on the second electrode layer. Through the design, parasitic capacitance between the first electrode and the second electrode layer is reduced, and energy consumption of the electronic paper display panel is reduced.
Description
Technical Field
The application relates to the technical field of display, in particular to an electronic paper display panel and a display device.
Background
With the development of digital technology, more and more display devices are going into people's life, such as electronic paper display panels. The electronic paper display panel is to uniformly disperse the electrophoretic particles into a medium solution with a certain viscosity, and to make the electrophoretic particles perform electrophoretic motion by using an electric field to generate color display. Since the display color reflects external light through the colored particles, the effect of ordinary paper is displayed, and the reader's favor is gained. In addition, the electronic paper display panel has bistable effect, so that the electronic paper display panel can display content even if power is cut off, and has remarkable power saving capability compared with other types of display equipment.
However, due to parasitic capacitance formed between the upper and lower opposite electrodes driving the electrophoretic particles to move, the load of the electronic paper display panel increases, so that the electronic paper display panel cannot guarantee lower power consumption operation.
Disclosure of Invention
The purpose of the application is to provide an electronic paper display panel and a display device, reduce parasitic capacitance between a first electrode and a second electrode layer, and reduce energy consumption of the electronic paper display panel.
The application discloses an electronic paper display panel, which comprises a first substrate, a first electrode layer, an electrophoresis layer, a second electrode layer and a second substrate, wherein the electrophoresis layer is arranged between the first substrate and the second substrate, the first electrode layer is arranged on one side, close to the electrophoresis layer, of the first substrate, and the second electrode layer is arranged on one side, close to the electrophoresis layer, of the second substrate;
the first electrode layer comprises a plurality of first electrodes arranged at intervals, the first electrodes are in one-to-one correspondence with a plurality of pixel areas in the electronic paper display panel, a plurality of hollowed-out parts are arranged on the first electrode layer and/or the second electrode layer, and orthographic projection of the first electrodes covers orthographic projection of the hollowed-out parts on the second electrode layer.
Optionally, the first electrode and the second electrode layer are both provided with the hollowed-out parts,
the hollowed-out parts on the first electrode are first hollowed-out parts, a plurality of first hollowed-out parts are arranged in a matrix, the hollowed-out parts on the second electrode layer are second hollowed-out parts, and a plurality of second hollowed-out parts are arranged in a matrix; the orthographic projection of the first hollowed-out part on the first substrate is not overlapped with the orthographic projection of the second hollowed-out part on the first substrate.
Optionally, the first hollow portion and the second hollow portion are rectangular, the lengths of the first hollow portion and the second hollow portion are 8 μm-12 μm, and the widths of the first hollow portion and the second hollow portion are 8 μm-12 μm.
Optionally, the electronic paper display panel further includes a spacer layer, where the spacer layer is disposed on a side of the first substrate, which is close to the first electrode layer;
the spacer layer comprises a plurality of spacer blocks which are arranged at intervals, the orthographic projection of the spacer blocks on the first substrate is overlapped with the orthographic projection of the second hollowed-out parts on the first substrate, and the orthographic projection of the spacer blocks on the first substrate is overlapped with the orthographic projection of the first electrodes on the first substrate.
Optionally, the first electrode and the second electrode layer are both provided with the hollowed-out parts, the hollowed-out parts on the first electrode are first hollowed-out parts, and the hollowed-out parts on the second electrode layer are second hollowed-out parts; the shape of the first hollowed-out part is long, a plurality of first hollowed-out parts are arranged in parallel at intervals, the shape of the second hollowed-out part is long, and a plurality of second hollowed-out parts are arranged in parallel at intervals;
the first hollowed-out part is arranged in parallel with the second hollowed-out part in the orthographic projection length direction on the first substrate; the orthographic projection of the first hollowed-out part on the first substrate is not overlapped with the orthographic projection of the second hollowed-out part on the first substrate.
Optionally, the first electrode and the second electrode layer are both provided with the hollowed-out parts, the hollowed-out parts on the first electrode are first hollowed-out parts, and the hollowed-out parts on the second electrode layer are second hollowed-out parts; the shape of the first hollowed-out part is long, a plurality of first hollowed-out parts are arranged in parallel at intervals, the shape of the second hollowed-out part is long, and a plurality of second hollowed-out parts are arranged in parallel at intervals;
the first hollowed-out part is arranged in the orthographic projection length direction on the first substrate and the second hollowed-out part is arranged in the orthographic projection length direction on the first substrate.
Optionally, the electrophoresis layer includes a plurality of microcapsules, electrophoresis particles are filled in the microcapsules, the microcapsules are arranged between the first electrode layer and the second electrode layer in a matrix, the microcapsules are spherical, and a capsule gap exists between four adjacent microcapsules;
the front projection of the first hollowed-out part on the first substrate and the front projection of the second hollowed-out part on the first substrate are overlapped to form an electrodeless area; the orthographic projection of the capsule gap overlaps with the orthographic projection of the electrodeless area.
Optionally, the electronic paper display panel further includes a driving layer, where the driving layer is disposed on the first substrate, and the driving layer includes a plurality of data lines and a plurality of scanning lines that are vertically and horizontally arranged, and the data lines and the scanning lines divide a plurality of pixel areas;
the first electrode is provided with the hollowed-out part, the shape of the hollowed-out part is an identification pattern, and the coordinates of the pixel area corresponding to the identification pattern.
Optionally, the driving layer further includes a plurality of active switches, a drain electrode of the active switch is connected to the first electrode, a gate electrode of the active switch is connected to the scan line, and a source electrode of the active switch is connected to the data line;
the front projection of the identification pattern on the first substrate overlaps with the front projection of the active switch on the first substrate.
The application also discloses a display device, including drive circuit and electronic paper display panel, drive circuit with electronic paper display panel connects.
Compared with the scheme that the first electrode and the second electrode layer are completely covered in a single pixel area of the existing electronic paper display panel, the electronic paper display panel has the advantages that the plurality of hollowed-out parts are arranged on the first electrode and/or the second electrode layer, so that the forward overlapping area between the first electrode and the second electrode layer is reduced, the parasitic capacitance between the first electrode and the second electrode layer is reduced, the energy consumption of the electronic paper display panel is reduced, and the electronic paper display panel can operate with lower power consumption.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive faculty for a person skilled in the art. In the drawings:
FIG. 1 is a schematic diagram of a display device according to an embodiment of the present application;
FIG. 2 is a schematic diagram of an electronic paper display panel according to a first embodiment of the present application;
FIG. 3 is a schematic illustration of a first electrode of a first embodiment of the present application;
FIG. 4 is a schematic illustration of a second electrode layer of the first embodiment of the present application;
fig. 5 is a schematic plan view of a single pixel region according to a first embodiment of the present application;
FIG. 6 is a schematic cross-sectional view of a first electrode according to a first embodiment of the present application;
FIG. 7 is a schematic illustration of a first electrode according to a second embodiment of the present application;
FIG. 8 is a schematic illustration of a second electrode layer according to a second embodiment of the present application;
FIG. 9 is a schematic illustration of the cooperation of a first electrode and a second electrode layer according to a second embodiment of the present application;
FIG. 10 is a schematic view of a first electrode according to a third embodiment of the present application;
FIG. 11 is a schematic illustration of a second electrode layer according to a third embodiment of the present application;
FIG. 12 is a schematic illustration of the cooperation of a first electrode and a second electrode layer according to a third embodiment of the present application;
fig. 13 is a schematic view of an electrophoretic layer according to a third embodiment of the present application;
fig. 14 is a schematic view of a first electrode according to a fourth embodiment of the present application.
10, a display device; 20. a driving circuit; 30. an electronic paper display panel; 100. a first substrate; 200. a driving layer; 210. an active switch; 220. a data line; 230. a scanning line; 300. a first electrode layer; 310. a first electrode; 400. an electrophoretic layer; 410. a microcapsule; 420. electrophoresis particles; 430. a capsule gap; 500. a second electrode layer; 600. a second substrate; 700. a hollowed-out part; 710. a first hollowed-out part; 720. a second hollow part; 730. identifying the pattern; 740. a hollowed-out compensation part; 800. a spacer layer; 810. a spacer block; 910. an electrode-free region; 920. a single electrode region; 930. a double electrode region.
Detailed Description
It should be understood that the terminology, specific structural and functional details disclosed herein are merely representative for purposes of describing particular embodiments, but that the application may be embodied in many alternate forms and should not be construed as limited to only the embodiments set forth herein.
In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating relative importance or implicitly indicating the number of technical features indicated. Thus, unless otherwise indicated, features defining "first", "second" may include one or more such features either explicitly or implicitly; the meaning of "plurality" is two or more. The terms "comprises," "comprising," and any variations thereof, are intended to cover a non-exclusive inclusion, such that one or more other features, integers, steps, operations, elements, components, and/or groups thereof may be present or added.
In addition, terms of the azimuth or positional relationship indicated by "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are described based on the azimuth or relative positional relationship shown in the drawings, are merely for convenience of description of the present application, and do not indicate that the apparatus or element referred to must have a specific azimuth, be configured and operated in a specific azimuth, and thus should not be construed as limiting the present application.
Furthermore, 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; can be mechanically or electrically connected; either directly or indirectly through intermediaries, or in communication with each other. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
The present application is described in detail below with reference to the attached drawings and alternative embodiments.
Fig. 1 is a schematic diagram of a display device according to an embodiment of the present application, as shown in fig. 1, the present application discloses a display device 10, where the display device 10 includes a driving circuit 20 and an electronic paper display panel 30, the driving circuit 20 is connected to the electronic paper display panel 30, and drives the electronic paper display panel 30 to display a picture.
The application also discloses an electronic paper display panel 30, the electronic paper display panel 30 can be used in the display device 10 described above, and for the electronic paper display panel 30, the application provides the following designs, and the description is specifically made through several embodiments:
example 1:
fig. 2 is a schematic diagram of an electronic paper display panel according to a first embodiment of the present application, as shown in fig. 2, the present application discloses an electronic paper display panel 30, the electronic paper display panel 30 includes a first substrate 100, a first electrode layer 300, an electrophoresis layer 400, a second electrode layer 500, and a second substrate 600, the electrophoresis layer 400 is disposed between the first substrate 100 and the second substrate 600, the first electrode layer 300 is disposed on the first substrate 100 near a side of the electrophoresis layer 400, and the second electrode layer 500 is disposed on the second substrate 600 near a side of the electrophoresis layer 400.
The first electrode layer 300 includes a plurality of first electrodes 310 disposed at intervals, the first electrodes 310 are in one-to-one correspondence with a plurality of pixel areas in the electronic paper display panel 30, a plurality of hollowed-out portions 700 are disposed on the first electrode 310 and/or the second electrode layer 500, and front projection of the first electrode 310 covers front projection of the hollowed-out portions 700 on the second electrode layer 500.
The first electrode layer 300 may be a pixel electrode layer or a common electrode layer, and the second electrode layer 500 may be a pixel electrode layer or a common electrode layer, which is not limited herein, and the first electrode layer 300 is taken as a pixel electrode layer, and the second electrode layer 500 is taken as a common electrode layer for explanation, and the common electrode layer is entirely laid on the second substrate 600.
The electronic paper display panel 30 further includes a driving layer 200, the driving layer 200 is disposed on the first substrate 100, the driving layer 200 includes a plurality of data lines 220 and a plurality of scan lines 230 that are arranged vertically and horizontally, and the data lines 220 and the scan lines 230 divide a plurality of pixel regions.
Compared with the scheme that the first electrode 310 and the second electrode layer 500 in a single pixel area of the existing electronic paper display panel 30 are completely covered, the electronic paper display panel 30 can be operated with lower power consumption by arranging the plurality of hollowed-out parts 700 on the first electrode 310 and/or the second electrode layer 500, so that the forward overlapping area between the first electrode 310 and the second electrode layer 500 is reduced, the parasitic capacitance between the first electrode 310 and the second electrode layer 500 is reduced, and the energy consumption of the electronic paper display panel 30 is reduced.
The hollowed-out portion 700 may be provided only on the first electrode 310; the hollowed-out portion 700 may be provided only on the second electrode layer 500; of course, the hollowed-out portions 700 may be provided on both the first electrode 310 and the second electrode 500. In this embodiment, the hollowed-out portion 700 is disposed on both the first electrode layer 300 and the second electrode layer 500.
Fig. 3 is a schematic view of a first electrode according to a first embodiment of the present application, fig. 4 is a schematic view of a second electrode layer according to a first embodiment of the present application, fig. 5 is a schematic plan view of a single pixel area according to a first embodiment of the present application, as shown in fig. 3 to 5, the first electrode 310 and the second electrode layer 500 are both provided with the hollowed-out portions 700, the hollowed-out portions 700 on the first electrode 310 are first hollowed-out portions 710, a plurality of the first hollowed-out portions 710 are arranged in a matrix, the hollowed-out portions 700 on the second electrode layer 500 are second hollowed-out portions 720, and a plurality of the second hollowed-out portions 720 are arranged in a matrix; the front projection of the first hollowed-out portion 710 on the first substrate 100 is not overlapped with the front projection of the second hollowed-out portion 720 on the first substrate 100.
That is, the shape of the first electrode 310 is a mesh structure, the shape of the second electrode layer 500 is also a mesh structure, and the first hollowed-out portion 710 and the second hollowed-out portion 720 are arranged in a staggered manner.
The arrangement of the plurality of uniformly distributed first hollowed-out portions 710 on the first electrode 310 and the plurality of uniformly distributed second hollowed-out portions 720 on the second electrode layer 500 can ensure that the overlapping area between the first electrode 310 and the second electrode layer 500 is reduced as much as possible, and simultaneously avoid the occurrence of the situation that the first hollowed-out portions 710 and the second hollowed-out portions 720 overlap, which results in the existence of the corresponding electrophoretic particles 420 in the electrophoretic layer 400 that cannot be driven.
The shapes of the first hollow portion 710 and the second hollow portion 720 are rectangular, the lengths of the first hollow portion 710 and the second hollow portion 720 are 8 μm-12 μm, and the widths of the first hollow portion 710 and the second hollow portion 720 are 8 μm-12 μm. Preferably, the shapes of the first hollowed-out portion 710 and the second hollowed-out portion 720 are square, and when the lengths and widths of the first hollowed-out portion 710 and the second hollowed-out portion 720 are 8 μm-12 μm, the parasitic capacitance between the first electrode 310 and the second electrode layer 500 can be greatly reduced, the driving of the electrophoretic particles 420 in the electrophoretic layer 400 is not affected, and the power consumption of the electronic paper display panel 30 is reduced while the picture display of the electronic paper display panel 30 is not affected.
Fig. 6 is a schematic cross-sectional view of a first electrode according to a first embodiment of the present application, and referring to fig. 6, since the shapes of the first electrode 310 and the second electrode layer 500 are both in a mesh structure, the first hollowed-out portion 710 on the first electrode 310 and the second hollowed-out portion 720 on the second electrode layer 500 are arranged in a staggered manner, so that there is a portion of orthographic projection overlap of the first electrode 310 and the orthographic projection overlap of the second electrode layer 500, which is a dual electrode region 930, and a portion of orthographic projection overlap of the first electrode 310 and the orthographic projection overlap of the second hollowed-out portion 720, which is a single electrode region 920, and therefore the electric field strength of the dual electrode region 930 is greater than that of the single electrode region 920, and a phenomenon of nonuniform electric field occurs, thereby affecting the display panel.
Thus, the present application increases the spacer 810 to raise the first electrode 310 of the single electrode area 920, and decreases the distance between the first electrode 310 and the second electrode layer 500 of the single electrode area 920, specifically: the electronic paper display panel 30 further includes a spacer layer 800, and the spacer layer 800 is disposed on the first substrate 100 at a side close to the first electrode layer 300; the spacer layer 800 includes a plurality of spacer blocks 810 disposed at intervals, where the front projection of the spacer blocks 810 on the first substrate 100 overlaps with the front projection of the second hollowed-out portion 720 on the first substrate 100, and the front projection of the spacer blocks 810 on the first substrate 100 overlaps with the front projection of the first electrode 310 on the first substrate 100, that is, the front projection of the spacer blocks 810 overlaps with the front projection of the single electrode area 920.
The electric field strength of the single electrode region 920 and the double electrode region 930 is balanced by adding the spacer layer 800 under the first electrode 310 of the single electrode region 920, reducing the distance between the first electrode 310 and the second electrode layer 500 at this position. Further, the spacer layer 800 may be made of a metal material, so that the electric field intensity at the position can be further increased, so that the electric field intensity at each position in a single pixel area is equivalent, and the movement of the electrophoretic particles 420 in the electrophoretic layer 400 is more consistent.
Spacer particles 810 may be added only under the first electrode 310 of the single electrode region 920. In addition, since there is a positive projection overlap between the partial second electrode and the positive projection of the first hollowed-out portion 710, and this region is also the single electrode region 920, a spacer 810 may be provided between the second electrode layer 500 and the second substrate 600 in the single electrode region 920 at the same time, so as to further reduce the difference between the electric field intensities. It is of course also possible to provide spacer 810 only between second electrode layer 500 and second substrate 600 in single electrode region 920, which is not limited herein.
Example 2:
fig. 7 is a schematic view of a first electrode according to a second embodiment of the present application, fig. 8 is a schematic view of a second electrode layer according to a second embodiment of the present application, fig. 9 is a schematic view of a first electrode and a second electrode layer matching each other according to a second embodiment of the present application, and in combination with fig. 7 to 9, unlike the first embodiment, the shape of the first hollowed-out portion 710 and the shape of the second hollowed-out portion 720 are elongated, specifically: the first electrode 310 and the second electrode layer 500 are both provided with the hollowed-out portion 700, the hollowed-out portion 700 on the first electrode 310 is a first hollowed-out portion 710, and the hollowed-out portion 700 on the second electrode layer 500 is a second hollowed-out portion 720; the shape of the first hollow portion 710 is in a strip shape, a plurality of first hollow portions 710 are arranged in parallel at intervals, the shape of the second hollow portion 720 is in a strip shape, and a plurality of second hollow portions 720 are arranged in parallel at intervals.
The first hollowed-out portion 710 is parallel to the second hollowed-out portion 720 in the front projection length direction of the first substrate 100; the front projection of the first hollowed-out portion 710 on the first substrate 100 is not overlapped with the front projection of the second hollowed-out portion 720 on the first substrate 100.
Compared with the solution of the first embodiment, in this embodiment, the first hollow portion 710 and the second hollow portion 720 are set to be long, and the first hollow portion 710 and the second hollow portion 720 are set in a staggered manner, so that electric field balance in a single pixel area is ensured, and the first electrode 310 and the second electrode layer 500 only have oblique overlapping, thereby greatly reducing parasitic capacitance and reducing energy consumption of the electronic paper display panel 30.
Preferably, the first hollowed-out portion 710 and the second hollowed-out portion 720 are rectangular, and the length and width of the first hollowed-out portion 710 are equal to the length and width of the second hollowed-out portion 720.
Example 3:
fig. 10 is a schematic view of a first electrode according to a third embodiment of the present application, fig. 11 is a schematic view of a second electrode layer according to a third embodiment of the present application, fig. 12 is a schematic view of a first electrode and a second electrode layer matching with each other according to a third embodiment of the present application, and unlike the second embodiment shown in fig. 10 to 12, the first hollowed-out portion 710 and the second hollowed-out portion 720 of the present embodiment are vertically arranged, specifically: the first electrode 310 and the second electrode layer 500 are both provided with the hollowed-out portion 700, the hollowed-out portion 700 on the first electrode 310 is a first hollowed-out portion 710, and the hollowed-out portion 700 on the second electrode layer 500 is a second hollowed-out portion 720; the shape of the first hollow portion 710 is in a strip shape, a plurality of first hollow portions 710 are arranged in parallel at intervals, the shape of the second hollow portion 720 is in a strip shape, and a plurality of second hollow portions 720 are arranged in parallel at intervals.
The first hollowed-out portion 710 is disposed perpendicular to the second hollowed-out portion 720 in the front projection length direction of the first substrate 100.
Compared with the solution of the second embodiment, in this embodiment, the first hollow portion 710 and the second hollow portion 720 are vertically disposed, so that the first hollow portion 710 and the second hollow portion 720 do not need to be aligned, and the process difficulty is reduced.
Fig. 13 is a schematic view of an electrophoretic layer according to a third embodiment of the present application, as shown in fig. 13, the electrophoretic layer 400 includes a plurality of microcapsules 410, the microcapsules 410 are filled with electrophoretic particles 420, the microcapsules 410 are arranged in a matrix between the first electrode layer 300 and the second electrode layer 500, the microcapsules 410 are spherical, and a capsule gap 430 exists between four adjacent microcapsules 410.
The overlapping portion of the orthographic projection of the first hollowed-out portion 710 on the first substrate 100 and the orthographic projection of the second hollowed-out portion 720 on the first substrate 100 is an electrodeless area 910; the orthographic projection of the capsule gap 430 overlaps the orthographic projection of the electrodeless area 910.
In this way, the electric field intensity in the electrodeless area 910 is weaker, and just corresponds to the capsule gap 430 between the four microcapsules 410, and the position of the capsule gap 430 is not provided with the electrophoretic particles 420, so that the weaker electric field intensity in the position does not affect the display effect of the electronic paper display panel 30, and further reduces the parasitic capacitance between the first electrode 310 and the second electrode layer 500.
Example 4:
fig. 14 is a schematic view of a first electrode according to a fourth embodiment of the present application, as shown in fig. 14, unlike the first embodiment, in this embodiment, a hollowed-out portion 700 is disposed on the first electrode 310, and the hollowed-out portion 700 has a shape of a pattern with identification information, specifically: the electronic paper display panel 30 further includes a driving layer 200, the driving layer 200 is disposed on the first substrate 100, the driving layer 200 includes a plurality of data lines 220 and a plurality of scan lines 230 that are arranged vertically and horizontally, and the data lines 220 and the scan lines 230 divide a plurality of pixel regions.
The first electrode 310 is provided with the hollowed-out portion 700, the hollowed-out portion 700 is shaped as a marking pattern 730, and coordinates of the pixel area corresponding to the marking pattern 730 are obtained.
Exemplary identification patterns 730 may be (G66, D88), the identification patterns 730 represent coordinate information of a pixel region where the first electrode 310 is located at the intersection of the 66 th scan line 230 and the 88 th data line 220.
Compared with the previous detection mode, if a display abnormality occurs in a certain pixel area of the electronic paper display panel 30, the detection equipment can only determine the coordinate information of the pixel along the scanning line 230 and the data line 220 of the pixel by continuous scanning, and can be quickly found in the subsequent repair; in this embodiment, the identification pattern 730 is directly disposed on the first electrode 310 corresponding to the pixel area, so that the detection device can directly determine the coordinate information of the pixel area with a problem, thereby improving the detection efficiency, reducing the repair difficulty, and improving the repair speed.
Further, the hollowed-out portion 700 may be disposed above the active switch 210, that is, the identification pattern 730 is disposed above the active switch 210, specifically: the driving layer 200 further includes a plurality of active switches 210, wherein the drains of the active switches 210 are connected to the first electrode 310, the gates of the active switches 210 are connected to the scan lines 230, and the sources of the active switches 210 are connected to the data lines 220. The front projection of the identification pattern 730 on the first substrate 100 overlaps with the front projection of the active switch 210 on the first substrate 100.
Thus, the overlapping area between the active switch 210 and the first electrode 310 can be reduced, the parasitic capacitance between the active switch 210 and the first electrode 310 can be reduced, and the energy consumption of the electronic paper display panel 30 can be reduced.
In addition, since the different areas of the hollowed-out portions 700 on the different first electrodes 310 are caused by the different identification patterns 730 on the first electrodes 310 at different positions, so that the electric field forces of the different pixel areas of the whole electronic paper display panel 30 are different, and the display effect is affected, the hollowed-out compensation portion 740 is further formed on the first electrodes 310, the largest hollowed-out portion 700 area of the identification pattern 730 is taken as the reference area, and the area of the hollowed-out portion 700 plus the hollowed-out compensation portion 740 of the identification pattern 730 is equal to the reference area. The areas of the hollowed-out portions 700 are equal although the identification patterns 730 are different in each pixel area, so that the electric field intensities of different pixel areas of the whole electronic paper display panel 30 are balanced, and the picture display effect is improved.
It should be noted that, the inventive concept of the present application may form a very large number of embodiments, but the application documents have limited space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features may be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.
The foregoing is a further detailed description of the present application in connection with specific alternative embodiments, and it is not intended that the practice of the present application be limited to such descriptions. It should be understood that those skilled in the art to which the present application pertains may make several simple deductions or substitutions without departing from the spirit of the present application, and all such deductions or substitutions should be considered to be within the scope of the present application.
Claims (10)
1. The electronic paper display panel is characterized by comprising a first substrate, a first electrode layer, an electrophoresis layer, a second electrode layer and a second substrate, wherein the electrophoresis layer is arranged between the first substrate and the second substrate, the first electrode layer is arranged on one side, close to the electrophoresis layer, of the first substrate, and the second electrode layer is arranged on one side, close to the electrophoresis layer, of the second substrate;
the first electrode layer comprises a plurality of first electrodes arranged at intervals, the first electrodes are in one-to-one correspondence with a plurality of pixel areas in the electronic paper display panel, a plurality of hollowed-out parts are arranged on the first electrode layer and/or the second electrode layer, and orthographic projection of the first electrodes covers orthographic projection of the hollowed-out parts on the second electrode layer.
2. The electronic paper display panel according to claim 1, wherein the first electrode and the second electrode layer are respectively provided with the hollow parts, the hollow parts on the first electrode are first hollow parts, a plurality of the first hollow parts are arranged in a matrix, the hollow parts on the second electrode layer are second hollow parts, and a plurality of the second hollow parts are arranged in a matrix; the orthographic projection of the first hollowed-out part on the first substrate is not overlapped with the orthographic projection of the second hollowed-out part on the first substrate.
3. The electronic paper display panel according to claim 2, wherein the first hollowed-out portion and the second hollowed-out portion are rectangular in shape, the first hollowed-out portion and the second hollowed-out portion are 8 μm-12 μm long, and the first hollowed-out portion and the second hollowed-out portion are 8 μm-12 μm wide.
4. The electronic paper display panel according to claim 2, further comprising a spacer layer disposed on the first substrate at a side close to the first electrode layer;
the spacer layer comprises a plurality of spacer blocks which are arranged at intervals, the orthographic projection of the spacer blocks on the first substrate is overlapped with the orthographic projection of the second hollowed-out parts on the first substrate, and the orthographic projection of the spacer blocks on the first substrate is overlapped with the orthographic projection of the first electrodes on the first substrate.
5. The electronic paper display panel according to claim 1, wherein the hollowed-out portions are respectively arranged on the first electrode and the second electrode layer, the hollowed-out portion on the first electrode is a first hollowed-out portion, and the hollowed-out portion on the second electrode layer is a second hollowed-out portion; the shape of the first hollowed-out part is long, a plurality of first hollowed-out parts are arranged in parallel at intervals, the shape of the second hollowed-out part is long, and a plurality of second hollowed-out parts are arranged in parallel at intervals;
the first hollowed-out part is arranged in parallel with the second hollowed-out part in the orthographic projection length direction on the first substrate; the orthographic projection of the first hollowed-out part on the first substrate is not overlapped with the orthographic projection of the second hollowed-out part on the first substrate.
6. The electronic paper display panel according to claim 1, wherein the hollowed-out portions are respectively arranged on the first electrode and the second electrode layer, the hollowed-out portion on the first electrode is a first hollowed-out portion, and the hollowed-out portion on the second electrode layer is a second hollowed-out portion; the shape of the first hollowed-out part is long, a plurality of first hollowed-out parts are arranged in parallel at intervals, the shape of the second hollowed-out part is long, and a plurality of second hollowed-out parts are arranged in parallel at intervals;
the first hollowed-out part is arranged in the orthographic projection length direction on the first substrate and the second hollowed-out part is arranged in the orthographic projection length direction on the first substrate.
7. The electronic paper display panel according to claim 6, wherein the electrophoretic layer comprises a plurality of microcapsules filled with electrophoretic particles, the microcapsules are arranged in a matrix between the first electrode layer and the second electrode layer, the microcapsules are spherical, and a capsule gap exists between four adjacent microcapsules;
the front projection of the first hollowed-out part on the first substrate and the front projection of the second hollowed-out part on the first substrate are overlapped to form an electrodeless area; the orthographic projection of the capsule gap overlaps with the orthographic projection of the electrodeless area.
8. The electronic paper display panel according to claim 1, further comprising a driving layer disposed on the first substrate, the driving layer including a plurality of data lines and a plurality of scan lines arranged vertically and horizontally, the data lines and the scan lines dividing a plurality of pixel areas;
the first electrode is provided with the hollowed-out part, the shape of the hollowed-out part is an identification pattern, and the coordinates of the pixel area corresponding to the identification pattern.
9. The electronic paper display panel of claim 8, wherein the driving layer further comprises a plurality of active switches, the drains of the active switches are connected to the first electrode, the gates of the active switches are connected to the scan lines, and the sources of the active switches are connected to the data lines;
the front projection of the identification pattern on the first substrate overlaps with the front projection of the active switch on the first substrate.
10. A display device comprising a drive circuit and an electronic paper display panel according to any of the preceding claims 1-9, the drive circuit being connected to the electronic paper display panel.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311737629.XA CN117539102A (en) | 2023-12-15 | 2023-12-15 | Electronic paper display panel and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311737629.XA CN117539102A (en) | 2023-12-15 | 2023-12-15 | Electronic paper display panel and display device |
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| CN202311737629.XA Pending CN117539102A (en) | 2023-12-15 | 2023-12-15 | Electronic paper display panel and display device |
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