CN119270555A

CN119270555A - Electronic paper and display devices

Info

Publication number: CN119270555A
Application number: CN202411819242.3A
Authority: CN
Inventors: 罗俊豪; 袁海江
Original assignee: HKC Co Ltd
Current assignee: HKC Co Ltd
Priority date: 2024-12-11
Filing date: 2024-12-11
Publication date: 2025-01-07
Anticipated expiration: 2044-12-11
Also published as: CN119270555B

Abstract

The present application discloses an electronic paper and a display device, wherein the electronic paper includes a plurality of electronic paper pixels arranged on a substrate, wherein a first electrode pair of a first electronic paper pixel controls black electrophoretic particles and white electrophoretic particles in a first accommodating cavity to move to opposite sides of the first accommodating cavity, respectively, and reflects ambient light in a first direction to form a first display screen; a second electrode pair of a second electronic paper pixel controls electrophoretic particles in a second accommodating cavity to move to opposite sides of the second accommodating cavity, and reflects ambient light in a second direction to form a second display screen; the first display screen and the second display screen are displayed on opposite sides of the electronic paper, respectively. By controlling the movement of the electrophoretic particles, the white electrophoretic particles can reflect light to opposite sides of the electronic paper, thereby realizing bidirectional display of the electronic paper, realizing multiple uses of one screen, improving the utilization rate of the electronic paper display area, and reducing the cost of the double-sided display structure.

Description

Electronic paper and display device

Technical Field

The application relates to the technical field of display, in particular to electronic paper and a display device.

Background

Along with the rapid development of the display device, the display device has more and more powerful functions and wider application, the electronic paper is used as one of the display devices, the electronic paper is suitable for a plurality of scenes, the most used places in life such as supermarkets and the like use electronic price tags, the use amount of the electronic paper in the large supermarkets is very large, and each dish is provided with one electronic price tag, so that the expenditure cost of the supermarkets is greatly increased.

The traditional double-side display structure is processed by split screens when different pictures are displayed, namely, the double-side display structure is split into two, one picture is displayed on the left half side, the other picture is displayed on the right half side, so that the display picture is reduced, the screen utilization rate is low, the cost of the double-side display mainly is that of a liquid crystal display panel or an organic light-emitting display panel, compared with the cost of configuring one electronic tag for each dish, namely, a customer can see the prices of two different commodities on the left side and the right side of the electronic tag, and meanwhile, the cost of expenditure is reduced, so that the problem to be solved is urgent.

Disclosure of Invention

The application aims to provide electronic paper and a display device, which realize reflection of light in different directions by controlling movement of electrophoretic particles so as to display pictures in different directions without changing the size of the display pictures, improve the utilization rate of a display area of the electronic paper and reduce the cost.

The application discloses electronic paper, which comprises a plurality of electronic paper pixels arranged on a substrate, wherein each electronic paper pixel comprises a first electronic paper pixel and a second electronic paper pixel, each first electronic paper pixel comprises a first accommodating cavity and a first electrode pair, each second electronic paper pixel comprises a second accommodating cavity and a second electrode pair, black electrophoretic particles and white electrophoretic particles are arranged in each of the first accommodating cavity and the second accommodating cavity, the first electrode pair controls the black electrophoretic particles and the white electrophoretic particles in each of the first accommodating cavities to move to two opposite sides of each of the first accommodating cavities respectively and reflect ambient light in a first direction to form a first display picture, and the second electrode pair controls the electrophoretic particles in each of the second accommodating cavities to move to two opposite sides of each of the second accommodating cavities and reflect ambient light in a second direction to form a second display picture, wherein the first display picture and the second display picture are displayed on two sides of the electronic paper respectively.

Optionally, the electronic paper further comprises a box-matching substrate, wherein a common electrode layer is arranged on one surface of the box-matching substrate, which is close to the substrate, the first accommodating cavity and the second accommodating cavity are both right trapezoid, the first electrode pair comprises a first electrode and a second electrode, the first electrode and the second electrode are respectively arranged on the bevel edge and the right angle edge of the first accommodating cavity, the second electrode pair comprises a third electrode and a fourth electrode, the third electrode and the fourth electrode are respectively arranged on the bevel edge and the right angle edge of the second accommodating cavity, an included angle between the bevel edge of the first accommodating cavity and the common electrode layer is a1, and an included angle between the bevel edge of the second accommodating cavity and the common electrode layer is a2;

The common electrode layer is correspondingly connected with the first electrode and the third electrode, the first electrode and the second electrode control the white electrophoretic particles in the first accommodating cavity to move to the inclined edge of the first accommodating cavity so as to reflect ambient light, and the third electrode and the fourth electrode control the white electrophoretic particles in the second accommodating cavity to move to the inclined edge of the second accommodating cavity so as to reflect ambient light.

Optionally, the electronic paper pixel further includes a third electronic paper pixel, the third electronic paper pixel is disposed between the first electronic paper pixel and the second electronic paper pixel, the third electronic paper pixel includes a third accommodating cavity and a third electrode pair, black electrophoretic particles and white electrophoretic particles are disposed in the third accommodating cavity, the third accommodating cavity is rectangular, the third electrode pair includes a fifth electrode and a sixth electrode, the fifth electrode and the sixth electrode are disposed on two sides of the third accommodating cavity relatively, and the sixth electrode and the second electrode, and the fourth electrode are disposed on the same layer on the substrate.

Optionally, the height of the top of the third accommodating cavity is lower than the height of the top of the first accommodating cavity and the height of the top of the second accommodating cavity, the height of the top of the first accommodating cavity and the height of the top of the second accommodating cavity are equal, the first accommodating cavity and the second accommodating cavity are symmetrically arranged with the third accommodating cavity as a center, a black light absorption layer is arranged between the top of the first accommodating cavity and the top of the third accommodating cavity and between the top of the first accommodating cavity and the top of the third accommodating cavity, the black light absorption layer is perpendicular to the fifth electrode, and the black light absorption layer is attached to the outer wall of the first accommodating cavity and the outer wall of the second accommodating cavity.

Optionally, the first accommodating cavity of the first electronic paper pixel and the second accommodating cavity of the second electronic paper pixel are rectangular and vertically arranged on the substrate, a first electrode and a second electrode are respectively arranged on the left side and the right side of the first accommodating cavity along the extending direction of the substrate, a second electrode and a third electrode are respectively arranged on the left side and the right side of the second accommodating cavity, the second electrode is a common electrode of the first accommodating cavity and the second accommodating cavity, black cover plates are covered on the tops of the first accommodating cavity and the second accommodating cavity, two adjacent electronic paper pixels are arranged at intervals, and the substrate where the interval area is located is a black substrate.

Optionally, a transparent glass layer is disposed on the substrate, the first accommodating cavity and the second accommodating cavity are disposed on a surface, away from the substrate, of the transparent glass layer, a third accommodating cavity is disposed between the transparent glass layer and the substrate, black electrophoretic particles and white electrophoretic particles are disposed in the third accommodating cavity, the third accommodating cavity is located under a spacing region between two adjacent pixels of the electronic paper along a direction in which ambient light is being absorbed into the electronic paper, and a fifth electrode and a sixth electrode are disposed above and below the third accommodating cavity

Optionally, the electronic paper further comprises a box-aligning substrate, wherein an anti-reflection film layer is arranged on one surface, close to the substrate, of the box-aligning substrate, the anti-reflection film layer comprises hollow silica particles, and the porosity of the hollow silica particles is 30% -50%.

Optionally, the first accommodating cavity and the second accommodating cavity are rectangular, a black column is arranged between the first accommodating cavity and the first accommodating cavity, a first electrode pair of the first accommodating cavity and a second electrode pair of the second accommodating cavity are parallel to the black column and perpendicular to the substrate, the height of the black column is higher than that of the first electrode pair and the second electrode pair, and the distance between two adjacent electronic paper pixels is set in a first preset range.

The application also discloses a display device which comprises the electronic paper and a driving circuit, wherein the driving circuit outputs driving signals to the first electrode pair of the first electronic paper pixel and the second electrode pair of the second electronic paper pixel of the electronic paper, and electrophoretic particles in the first accommodating cavity and the second accommodating cavity are controlled to move so as to reflect ambient light and realize picture display on two sides of the electronic paper.

Optionally, the first electrode pair comprises a first electrode and a second electrode, the second electrode pair comprises a third electrode and a fourth electrode, the second electrode and the fourth electrode are mutually communicated, a plurality of first data lines, a plurality of second data lines and a plurality of third data lines are arranged on a substrate of the electronic paper, the first data lines are connected with the first electrode and output data voltage signals to the first electrode, the third data lines are connected with the second electrode and output data voltage signals to the second electrode, the pressure difference between the first electrode and the second electrode in the first electrode pair is controlled according to the voltage change of the first data lines and the third data lines, the movement of black electrophoretic particles and white electrophoretic particles in the first accommodation cavity is realized, the second data lines are connected with the third electrode and output data voltage signals to the third electrode, the third data lines are connected with the fourth electrode and output data voltage signals to the fourth electrode, and the pressure difference between the third electrode and the fourth electrode in the second electrode pair is controlled according to the voltage change of the second data lines and the third data lines, and the movement of the black electrophoretic particles and the white electrophoretic particles in the second accommodation cavity is realized.

Compared with the prior art that two display areas are divided on one double-sided display panel to display two pictures, the double-sided display is realized by using the electronic paper, the display area of the electronic paper is not divided into two display areas, the electrophoretic particles of the electronic paper are controlled to move, original direct display light is reflected to two sides of the electronic paper through the reflecting structure, pictures are respectively displayed on two sides of the electronic paper, the electronic paper is not required to be cut, the whole display surface of the electronic paper can be used, people on two sides of the electronic paper can see pictures displayed on a large screen, the screen utilization rate and the user experience are improved, the pictures displayed on two sides cannot be mutually watched, mutual interference is avoided, and the display cost is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of 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 evident that the figures in the following description are only some embodiments of the application, from which other figures can be obtained without inventive effort for a person skilled in the art. In the drawings:

fig. 1 is a schematic structural view of an electronic paper according to a first embodiment of the present application;

fig. 2 is a schematic structural view of an electronic paper according to a second embodiment of the present application;

FIG. 3 is a schematic structural view of another electronic paper according to a second embodiment of the present application;

fig. 4 is a schematic structural view of an electronic paper according to a third embodiment of the present application;

fig. 5 is a schematic structural view of an electronic paper according to a fourth embodiment of the present application;

fig. 6 is a schematic structural view of an electronic paper according to a fifth embodiment of the present application;

Fig. 7 is a schematic structural view of an electronic paper according to a sixth embodiment of the present application;

fig. 8 is a schematic structural view of an electronic paper according to a seventh embodiment of the present application;

fig. 9 is a schematic structural view of a display device according to an eighth embodiment of the present application;

fig. 10 is a schematic structural view of a display device according to a ninth embodiment of the present application.

The display device comprises 10 parts of a display device, 100 parts of electronic paper, 110 parts of a substrate, 111 parts of a first data line, 112 parts of a second data line, 113 parts of a black substrate, 120 parts of an electronic paper pixel, 130 parts of a first electronic paper pixel, 131 parts of a first accommodating cavity, 132 parts of a first electrode pair, 133 parts of a first electrode, 134 parts of a second electrode, 140 parts of a second electronic paper pixel, 141 parts of a second accommodating cavity, 142 parts of a second electrode pair, 143 parts of a third electrode, 144 parts of a fourth electrode, 150 parts of a third electronic paper pixel, 151 parts of a third accommodating cavity, 152 parts of a third electrode pair, 153 parts of a fifth electrode, 154 parts of a sixth electrode, 160 parts of an electrophoretic particle, 161 parts of a black electrophoretic particle, 162 parts of a white electrophoretic particle, 163 parts of a black cover plate, 170 parts of a black light absorbing layer, 180 parts of an antireflection film layer, 181 parts of a hollow silica particle, 190 parts of a black column, 200 parts of a pair of a box substrate, 210 parts of a common electrode layer, 220 parts of a transparent glass layer, 300 parts of a driving circuit, 310 parts of a first driving chip and 320 parts of a second driving chip.

Detailed Description

It is to be understood that the terminology used herein, the specific structural and functional details disclosed are merely representative for the purpose 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 "a first", "a second", and "a plurality" may include one or more of such features explicitly or implicitly, and "a plurality" means 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 constructed 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," "coupled," and "connected" are to be construed broadly, and may be either permanently connected, removably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intervening medium, or in communication between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

The application is described in detail below with reference to the attached drawings and alternative embodiments.

Example 1:

As shown in fig. 1, as a first embodiment of the present application, an electronic paper 100 is disclosed, the electronic paper 100 includes a plurality of electronic paper pixels 120 disposed on a substrate 110, each electronic paper pixel 120 includes a first electronic paper pixel 130 and a second electronic paper pixel 140, the first electronic paper pixel 130 includes a first accommodation chamber 131 and a first electrode pair 132, the second electronic paper pixel 140 includes a second accommodation chamber 141 and a second electrode pair 142, black electrophoretic particles 161 and white electrophoretic particles 162 are disposed in the first accommodation chamber 131 and the second accommodation chamber 141, the first electrode pair 132 controls the black electrophoretic particles 161 and the white electrophoretic particles 162 in the first accommodation chamber 131 to move to opposite sides of the first accommodation chamber 131, the white electrophoretic particles 162 moving to the upper side reflect ambient light in a first direction to form a first display screen, and when no display is required, the black electrophoretic particles 161 move to the upper side to absorb ambient light, the second electrode pair 142 controls the second accommodation chamber to move to the second accommodation chamber 141 in a second direction to form a second direction to the opposite sides of the first direction, the first direction and the second direction to form an angle of 180 ° to the second direction to the first direction to form a < second direction to the first direction to the second electrophoretic particles 162.

In this embodiment, each electronic paper pixel 120 of the electronic paper 100 is mainly divided into a first electronic paper pixel 130 and a second electronic paper pixel 140, i.e. corresponding to two display areas, and the two electronic paper pixels are mutually independent, so that the display of the same or different pictures can be realized.

Specifically, the first electronic paper pixel 130 includes a first accommodating cavity 131 and a first electrode pair 132, the second electronic paper pixel 140 includes a second accommodating cavity 141 and a second electrode pair 142, the first accommodating cavity 131 and the second accommodating cavity 141 are respectively provided with black electrophoretic particles 161 and white electrophoretic particles 162, the black electrophoretic particles 161 can absorb light, the white electrophoretic particles 162 reflect light to two sides, two display areas correspond to two display sides, the first electrode pair 132 controls the black electrophoretic particles 161 and the white electrophoretic particles 162 in the first accommodating cavity 131 to respectively move to two opposite sides of the first accommodating cavity 131 and reflect ambient light in a first direction to form a first display screen, the second electrode pair 142 controls the electrophoretic particles 160 in the second accommodating cavity 141 to move to two opposite sides of the second accommodating cavity 141 and reflect ambient light in a second direction to form a second display screen, the two sides of the whole electronic paper 100 can be used for displaying the two display screens, the two display screens correspond to each other, the two sides can only have a unit of the picture, and the picture can not be clearly interfered by people, and the whole picture can not be clearly displayed, and the picture quality is not clearly controlled. Of course, according to different requirements and screen sizes, a mode that a plurality of pixels correspond to one display area can be adopted, so that the display effect is optimized and resources are saved. In practice, the size of the minimum display area unit will be determined according to the particular specifications of the screen and the desired display quality.

In the present embodiment, the design of the electronic paper 100 is not limited to the single display color mode. This means that it can support black and white display, is suitable for scenes requiring high contrast and energy saving, and can realize color display to meet the requirement of users for rich colors.

Example 2:

As shown in fig. 2, as a second embodiment of the present application, further improving and refining the first embodiment, the electronic paper 100 further includes a pair-box substrate 200, a common electrode layer 210 is disposed on a surface of the pair-box substrate 200 adjacent to the substrate 110, the first accommodating cavity 131 and the second accommodating cavity 141 are both right trapezoid, the first electrode pair 132 includes a first electrode 133 and a second electrode 134, the first electrode 133 and the second electrode 134 are disposed on a hypotenuse and a right angle edge of the first accommodating cavity 131, an included angle between the hypotenuse of the first accommodating cavity and the common electrode layer 210 is a1, an included angle between the hypotenuse of the second accommodating cavity and the common electrode layer 210 is a2, a1=a2, a1 is less than or equal to 60 °, the second electrode pair 142 includes a third electrode 143 and a fourth electrode 144, the third electrode 143 and the fourth electrode 144 are disposed on the second accommodating cavity 141 and the right angle edge, respectively, the first electrode 133 and the second electrode pair 133 are disposed on the right angle edge, the second electrode pair 133 is connected to the second electrode layer, the second electrode pair 144 is not connected to the white electrode pair 144, and the white electrode pair 131 is disposed in the white particle-containing cavity, and the white particle pair is disposed in the white particle-containing space 133, and the white particle-containing space is not connected to the white electrode pair 144, and the white particle-containing space is moved between the second electrode pair 131 and the white electrode pair 144.

Further, the right-angle side of the first accommodating cavity 131 and the right-angle side of the second accommodating cavity 141 are on the same horizontal plane, the bottom of the first accommodating cavity 131 and the bottom of the second accommodating cavity 141 are arranged in a superposition manner, the bottom is perpendicular to the substrate 110, the first accommodating cavity 131 and the second accommodating cavity 141 are arranged in an axisymmetric manner by taking the bottom as a central axis, the inclined edges form an inverted V-shaped structure, wherein the inclined edges of the first accommodating cavity 131 and the central axis are equal to each other, the inclined edges of the second accommodating cavity 141 and the central axis are equal to each other, and are equal to or greater than 40 degrees and less than 70 degrees, the inclined edges of the first accommodating cavity 131 and the central axis are always equal to each other, the inclined edges of the first accommodating cavity 131 and the inclined edges of the first accommodating cavity and the common electrode layer 210 are complementary angles, and the inclined edges of the second accommodating cavity 141 and the common electrode layer are complementary angles.

In this embodiment, the white electrophoretic particles 162 and the black electrophoretic particles 161 are moved on the upper and lower sides, and by providing oblique sides, the white electrophoretic particles 162 are arranged in an oblique manner, so as to realize reflective display at different angles on both sides. In addition, as shown in fig. 3, the two trapezoid structures may be disposed with the upper bottom overlapping, the first accommodating cavity 131 and the second accommodating cavity 141 are disposed with the upper bottom as a central axis and are axisymmetrically disposed, the oblique sides form a V-shaped structure, the left ambient light is incident on the right third electrode, when the white electrophoretic particles 162 in the second accommodating cavity 141 move to the third electrode 143, the white electrophoretic particles 162 in the second accommodating cavity 141 reflect the ambient light to the left, the left side of the electronic paper 100 displays a picture, the right ambient light is incident on the left first electrode 133, when the white electrophoretic particles 162 in the first accommodating cavity 131 move to the first electrode, the white electrophoretic particles 162 in the first accommodating cavity 131 reflect the ambient light to the right, and the right side of the electronic paper 100 displays a picture, and the included angle formed between the first electrode 133 and the third electrode 143 is generally 60 ° to 120 °.

Example 3:

As shown in fig. 4, as a third embodiment of the present application, the foregoing second embodiment is further improved and refined, in order to improve the display richness of the electronic paper 100 and save the number of electronic display papers in a supermarket, the electronic paper 100 in this embodiment can implement display at three angles, namely, not only people on the left and right sides of the electronic paper 100 can see the display screen, people in the middle can also see the display screen, the display screens seen at three positions can be the same or different, and corresponding driving circuits 300 can be provided to implement display of the screen; specifically, in terms of structure, the electronic paper pixel 120 further includes a third electronic paper pixel 150, the third electronic paper pixel 150 is disposed between the first electronic paper pixel 130 and the second electronic paper pixel 140, the third electronic paper pixel 150 includes a third accommodating cavity 151 and a third electrode pair 152, the third accommodating cavity 151 is disposed in a rectangular shape, the third electrode pair 152 includes a fifth electrode 153 and a sixth electrode 154, the fifth electrode 153 and the sixth electrode 154 are disposed on two sides of the third accommodating cavity 151 in opposition, the sixth electrode 154 and the second electrode 134, and the fourth electrode 144 are disposed on the substrate 110 at the same level, the fifth electrode 153 is generally connected with the pixel electrode layer through a via hole, the top height of the first accommodating cavity 131 and the top height of the second accommodating cavity 141 are equal, and the first accommodating cavity 131 and the second accommodating cavity 141 are disposed symmetrically with each other with the third accommodating cavity 151 as a center.

The first electrode 133 and the second electrode 134 control the white electrophoretic particles 162 in the first accommodating cavity 131 to move to the oblique side of the first accommodating cavity 131 to reflect ambient light, and to realize image display on the left side, the third electrode 143 and the fourth electrode 144 control the white electrophoretic particles 162 in the second accommodating cavity 141 to move to the oblique side of the second accommodating cavity 141 to reflect ambient light, and to realize image display on the right side, the fifth electrode 153 and the sixth electrode 154 control the white electrophoretic particles 162 in the third accommodating cavity 151 to move to the vicinity of the fifth electrode 153 on the third accommodating cavity 151 to reflect ambient light, and to realize image display in the middle, and in order to avoid the mutual influence of the display images on the three sides, the top height of the third accommodating cavity 151 is lower than the top heights of the first accommodating cavity 131 and the second accommodating cavity 141, and the top of the third accommodating cavity 131 are arranged to reflect ambient light, and the top of the first accommodating cavity 131 and the black layer 170 are arranged to the right side, and the black layer 170 is arranged to the left side of the black accommodating cavity 131, and the black layer 170 is arranged to avoid the vertical influence of the black layer 170 on the two sides of the black accommodating cavity, and the black layer 170 is arranged to prevent the black layer 170 from being absorbed on the two sides of the black layer 170.

Example 4:

As shown in fig. 5, as a fourth embodiment of the present application, the first embodiment is further defined and refined, unlike the second embodiment and the third embodiment, the first accommodating cavity 131 and the second accommodating cavity 141 are rectangular, not trapezoidal, a black column 190 is disposed between the first accommodating cavity 131 and the first accommodating cavity 131, the first electrode pair 132 of the first accommodating cavity 131 and the second electrode 134 of the second accommodating cavity 141 are parallel to the black column 190 and perpendicular to the substrate 110, one black column 190 is disposed between each two sub-pixels, the height of the black column 190 is higher than the height of the first electrode pair 132 and the second electrode pair 142, and the distance between two adjacent electronic paper pixels is set within a first preset range.

In this embodiment, voltages are applied to the electrodes in the electrode pair, the white electrophoretic particles 162 and the black electrophoretic particles 161 move to the left and right sides, ambient light with a certain angle with the incident surface on the left and right sides enters the pixel structure and is reflected back by the white electrophoretic particles 162, so that the display of a picture is realized, normally when two sub-pixels are required to be displayed, the white electrophoretic particles move to one electrode close to the black column 190, light on the left and right sides is incident on the white electrophoretic particles 162 and is reflected back to form two left and right pictures, if the picture is required on the left side, but not required on the right side, the black electrophoretic particles 161 of the second accommodating cavity on the right side move to one side close to the black column, and meanwhile, the white electrophoretic particles 162 also move to one side far away from the black column 190, because the height of the black column 190 is larger than the height of the accommodating cavity, the distance between two adjacent electronic paper pixels is set in a first preset range, at this time, the left light is blocked by the black column 190, interference on the left display picture is not formed, and the specific distance between the electronic paper pixels can be controlled to be within a preset range of 5um according to the specific display angle and a preset range of the black column height of 5 um.

Example 5:

As shown in fig. 6, as a fifth embodiment of the present application, unlike the above-described fourth embodiment, the first electronic paper pixel 130 and the second electronic paper pixel 140 in each electronic paper pixel 120 share one electrode, i.e., are arranged in a common cathode, and specifically, the first accommodation chamber 131 of the first electronic paper pixel 130 and the second accommodation chamber 141 of the second electronic paper pixel 140 are arranged in a rectangular shape and are arranged vertically on the substrate 110; in the extending direction of the substrate 110, that is, in the horizontal direction in fig. 6, the left and right sides of the first accommodating cavity 131 are respectively provided with a first electrode 133 and a second electrode 134, the left and right sides of the second accommodating cavity 141 are respectively provided with a second electrode 134 and a third electrode 143, the second electrode 134 is a common electrode of the first accommodating cavity 131 and the second accommodating cavity 141, black electrophoretic particles 161 and white electrophoretic particles 162 are respectively arranged in the two accommodating cavities, the first electrode 133 and the third electrode 143 receive different voltage signals and generate a voltage difference with the voltage on the second electrode 134, so that the black electrophoretic particles 161 and the white electrophoretic particles 162 in the accommodating cavities move, when the white electrophoretic particles 162 move to the first electrode 133 or the third electrode 143, the image display on the corresponding sides can be realized, when the black electrophoretic particles 161 move to the first electrode 133 and the third electrode 143, ambient light is absorbed, the image is not displayed, the black electrophoretic particles 161 and the white electrophoretic particles 162 are respectively arranged on the top of the first accommodating cavity 131 and the second accommodating cavity 141, the two adjacent black substrates are covered by the two cover plates 113, and the two adjacent black substrates are arranged as the spacer substrate 110.

The embodiment can be understood as that an opaque electrode, namely a common cathode is arranged in a charged particle container, the charged particle container is divided into two parts to form pixels displayed on the left side and the right side, the left side and the right side of each pixel are controlled by a transparent ITO electrode and the common cathode together, each two pixels together are covered by a black cover plate so as to avoid confusion, a black substrate under each pixel bears a picture which can be seen from the left direction and the right direction, the common cathode is grounded, the ITO electrodes on the left side and the right side control the positive polarity and the negative polarity of the ITO electrodes through a data line of an IC (integrated circuit), for example, black particles are positively charged, white particles are negatively charged, and if the ITO electrodes are electrified with negative voltage, the black particles are attracted to repel the white particles, so that black is displayed.

Example 6:

As shown in fig. 7, as a further modification of the fifth embodiment of the present application, unlike the three-way display in the third embodiment, in this embodiment, a transparent glass layer is disposed on the substrate 110, the first accommodating chamber and the second accommodating chamber are disposed on a surface of the transparent glass layer 220 away from the substrate 110, a third accommodating chamber 151 is disposed between the transparent glass layer 220 and the substrate, black electrophoretic particles 161 and white electrophoretic particles 162 are disposed in the third accommodating chamber 151, and the third accommodating chamber 151 is located directly below a space region between two adjacent pixels 120 of electronic paper in a direction in which ambient light is directly incident into the electronic paper, and a fifth electrode 153 and a sixth electrode 154 are disposed above and below the third accommodating chamber 151.

The interval area of each electronic paper pixel 120 can be provided with one electronic paper pixel to realize the display of the middle area, and the two directions in three directions of display are the same as those of the fifth embodiment, except that one more forward display is provided, by arranging an ITO electrode and a charged particle container, namely a third accommodating cavity, on the substrate layer, the display color of the picture is controlled by controlling the trend of charged particles by the upper and lower cathode-anode ITO electrodes, namely the fifth electrode 153 and the sixth electrode 154, so as to form forward display content.

Example 7:

As shown in fig. 8, as a seventh embodiment of the present application, the electronic paper 100 further includes a pair of box substrates 200, in order to increase the brightness of the electronic paper 100 on both sides, one side of the pair of box substrates 200, which is close to the substrate 110, is provided with an antireflection film layer 180, the whole layer of the antireflection film layer 180 is disposed on the pair of box substrates 200, the thickness of the whole layer can be selectively set according to the display brightness requirement, and the thickness of the whole layer is uniformly set when the whole layer is disposed, the antireflection film layer 180 includes hollow silica particles 181, and the porosity of the hollow silica particles is 30% -50%, so that when the ambient light reaches the antireflection film layer 180 after passing through the pair of box substrates 200, the brightness of the light emitted to both sides is increased by the antireflection film layer 180, the display effect is improved, the refractive index of the antireflection film layer 180 is further reduced, and the glass coated with the antireflection film layer 180 has a lower reflectivity.

Example 8:

As shown in fig. 9, as an eighth embodiment of the present application, there is disclosed a display device 10, the display device 10 including a driving circuit 300 and the electronic paper 100 in any of the above embodiments, the electronic paper 100 being connected to the driving circuit 300, driving signals of the electronic paper 100, such as data signals or scan signals or touch signals, etc., being provided by the driving circuit 300, and the corresponding driving circuits 300 being different according to different electronic papers 100.

The driving circuit 300 outputs driving signals to the first electrode pair 132 of the first electronic paper pixel 130 and the second electrode pair 142 of the second electronic paper pixel 140 of the electronic paper 100, and controls the electrophoretic particles 160 in the first accommodating chamber 131 and the second accommodating chamber 141 to move so as to reflect ambient light, thereby realizing the display of images on both sides of the electronic paper 100.

As shown in fig. 10, as a ninth embodiment of the present application, referring to fig. 2,4 and 10, the first electrode pair 132 includes a first electrode 133 and a second electrode 134, the second electrode pair 142 includes a third electrode 143 and a fourth electrode 144, the second electrode 134 and the fourth electrode 144 are communicated with each other, the substrate 110 of the electronic paper 100 is provided with a plurality of first data lines 111 and a plurality of second data lines 112 and a plurality of third data lines, the first data lines are connected with the first electrode 133 and output data voltage signals to the first electrode 133, the third data lines are connected with the second electrode 134 and output data voltage signals to the second electrode 134, a difference between the first electrode 133 and the second electrode 134 in the first electrode pair is controlled according to a voltage change of the first data lines and the third data lines, movement of the black electrophoretic particles 161 and white electrophoretic particles 162 in the first accommodation chamber is realized, the second data lines are connected with the third electrode 143 and output data voltage signals to the third electrode 133 and output data signals to the third electrode 144, and a difference between the fourth electrode pair is realized according to a voltage change between the third electrode 143 and the fourth electrode pair.

In this embodiment, two electrodes disposed on the substrate are mutually communicated and can be connected with the same data line to realize common cathode and receive the same data voltage, and two electrodes disposed above are respectively connected with different data lines to receive different voltages, that is to say, the electrophoretic particles in the accommodating cavity can be controlled to move by only adjusting the voltages on the first data line and the second data line, thereby realizing reflection of ambient light and displaying images.

Further, the driving circuit 300 may include a first driving chip 310 and a second driving chip 320, the two driving chips respectively output voltage driving signals to the corresponding data lines, the first driving chip 310 outputs the corresponding driving voltage signals to the first data line 111, the second driving chip 320 outputs the corresponding voltage driving signals to the third data line, the voltage on the first data line is different from the voltage on the second data line, the voltage variation on the first data line is mainly used to control the voltage difference between the first electrode 133 and the second electrode 134 in the first electrode pair 132, so as to realize the movement of the black electrophoretic particles 161 and the white electrophoretic particles 162 in the first accommodating cavity 131, the first driving chip 320 outputs the corresponding driving voltage signals to the second data line 112, the second driving chip 320 outputs the corresponding voltage driving signals to the third data line, the voltage on the first data line is different from the voltage on the second data line, the voltage variation on the first data line is mainly used to control the voltage variation on the third electrode 143 and the fourth electrode 144 in the second electrode pair 142, so as to realize the movement of the black electrophoretic particles 161 and the white electrophoretic particles 162 in the second accommodating cavity 131.

It should be noted that, the inventive concept of the present application can form a very large number of embodiments, but the application documents are limited in space and cannot be listed one by one, so that on the premise of no conflict, the above-described embodiments or technical features can be arbitrarily combined to form new embodiments, and after the embodiments or technical features are combined, the original technical effects will be enhanced.

The above description of the application in connection with specific alternative embodiments is further detailed and it is not intended that the application be limited to the specific embodiments disclosed. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the application, and these should be considered to be within the scope of the application.

Claims

1. The electronic paper is characterized by comprising a plurality of electronic paper pixels arranged on a substrate, wherein each electronic paper pixel comprises a first electronic paper pixel and a second electronic paper pixel, the first electronic paper pixel comprises a first accommodating cavity and a first electrode pair, the second electronic paper pixel comprises a second accommodating cavity and a second electrode pair, and black electrophoretic particles and white electrophoretic particles are arranged in the first accommodating cavity and the second accommodating cavity;

the first electrode pair controls black electrophoretic particles and white electrophoretic particles in the first accommodating cavity to move to two opposite sides of the first accommodating cavity respectively, and reflects ambient light towards a first direction to form a first display picture; the second electrode pair controls the electrophoretic particles in the second accommodating cavity to move to two opposite sides of the second accommodating cavity and reflect ambient light towards a second direction to form a second display picture;

The first display picture and the second display picture are respectively displayed on two sides of the electronic paper.

2. The electronic paper according to claim 1, further comprising a pair of box substrates, wherein a common electrode layer is arranged on one surface of each pair of box substrates, which is close to the substrates, the first accommodating cavity and the second accommodating cavity are both right trapezoid-shaped, the first electrode pair comprises a first electrode and a second electrode, which are respectively arranged on the oblique side and the right angle side of the first accommodating cavity, the second electrode pair comprises a third electrode and a fourth electrode, which are respectively arranged on the oblique side and the right angle side of the second accommodating cavity, an included angle a1 is formed between the oblique side of the first accommodating cavity and the common electrode layer, and an included angle a2 is formed between the oblique side of the second accommodating cavity and the common electrode layer;

3. The electronic paper according to claim 2, wherein the electronic paper pixel further comprises a third electronic paper pixel, the third electronic paper pixel is arranged between the first electronic paper pixel and the second electronic paper pixel, the third electronic paper pixel comprises a third accommodating cavity and a third electrode pair, black electrophoretic particles and white electrophoretic particles are arranged in the third accommodating cavity, the third accommodating cavity is rectangular, the third electrode pair comprises a fifth electrode and a sixth electrode, the fifth electrode and the sixth electrode are oppositely arranged on two sides of the third accommodating cavity, and the sixth electrode and the second electrode, and the fourth electrode are arranged on the substrate in the same layer.

4. The electronic paper according to claim 3, wherein a top height of the third accommodating chamber is lower than a top height of the first accommodating chamber and a top height of the second accommodating chamber, the top heights of the first accommodating chamber and the second accommodating chamber are equal, and the first accommodating chamber and the second accommodating chamber are symmetrically arranged with respect to each other with the third accommodating chamber as a center;

And a black light absorption layer is arranged between the top of the first accommodating cavity and the top of the third accommodating cavity, is perpendicular to the fifth electrode and is attached to the outer walls of the first accommodating cavity and the second accommodating cavity.

5. The electronic paper of claim 1, wherein the first accommodation chamber of the first electronic paper pixel and the second accommodation chamber of the second electronic paper pixel are arranged in a rectangular shape and vertically on the substrate;

along the extending direction of the substrate, a first electrode and a second electrode are respectively arranged at the left side and the right side of the first accommodating cavity, a second electrode and a third electrode are respectively arranged at the left side and the right side of the second accommodating cavity, the second electrode is a common electrode of the first accommodating cavity and the second accommodating cavity, black cover plates are covered at the tops of the first accommodating cavity and the second accommodating cavity, two adjacent electronic paper pixels are arranged at intervals, and the substrate where the interval area is located is a black substrate.

6. The electronic paper according to claim 5, wherein a transparent glass layer is disposed on the substrate, the first accommodating cavity and the second accommodating cavity are disposed on a surface, away from the substrate, of the transparent glass layer, a third accommodating cavity is disposed between the transparent glass layer and the substrate, black electrophoretic particles and white electrophoretic particles are disposed in the third accommodating cavity, the third accommodating cavity is located under a spacing region of two adjacent pixels of the electronic paper in a direction in which ambient light is being taken into the electronic paper, and a fifth electrode and a sixth electrode are disposed above and below the third accommodating cavity.

7. The electronic paper according to claim 1, further comprising a pair of box substrates, wherein an anti-reflection film layer is arranged on one surface of each pair of box substrates, which is close to the substrates, and comprises hollow silica particles, and the porosity of the hollow silica particles is 30% -50%.

8. The electronic paper according to claim 1, wherein the first accommodating chamber and the second accommodating chamber are rectangular, a black column is arranged between the first accommodating chamber and the first accommodating chamber, a first electrode pair of the first accommodating chamber and a second electrode pair of the second accommodating chamber are parallel to the black column and perpendicular to the substrate, the height of the black column is higher than the height of the first electrode pair and the second electrode pair, and a distance between two adjacent electronic paper pixels is set within a first preset range.

9. A display device, comprising the electronic paper according to any one of claims 1-8 and a driving circuit, wherein the driving circuit outputs a driving signal to a first electrode pair of a first electronic paper pixel and a second electrode pair of a second electronic paper pixel of the electronic paper, and controls electrophoretic particles in a first accommodating cavity and a second accommodating cavity to move so as to reflect ambient light, thereby realizing picture display on both sides of the electronic paper.

10. The display device according to claim 9, wherein the first electrode pair includes a first electrode and a second electrode, the second electrode pair includes a third electrode and a fourth electrode, the second electrode and the fourth electrode are communicated with each other, a plurality of first data lines, a plurality of second data lines and a plurality of third data lines are provided on a substrate of the electronic paper, the first data lines are connected to the first electrode and output data voltage signals to the first electrode, the third data lines are connected to the second electrode and output data voltage signals to the second electrode, a pressure difference between the first electrode and the second electrode in the first electrode pair is controlled according to a voltage change on the first data lines and the third data lines, movement of black electrophoretic particles and white electrophoretic particles in the first accommodation chamber is realized, the second data lines are connected to the third electrode and output data voltage signals to the third electrode, the third data lines are connected to the fourth electrode and output data voltage signals to the fourth electrode, and movement of black electrophoretic particles and white electrophoretic particles in the second accommodation chamber is realized according to a voltage change on the second data lines and the third data lines.