Electronic paper and display devices

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

Technical Field

[0001] The present application relates to the field of display technology, and in particular to an electronic paper and a display device. Background Art

[0002] With the rapid development of display devices, their functions are becoming more and more powerful and their applications are becoming more and more extensive. As one of the display devices, electronic paper is suitable for many scenarios. It is most widely used in life in supermarkets and other places with electronic price tags. The usage of electronic paper in large supermarkets is very large. Each dish is equipped with an electronic price tag, which greatly increases the supermarket's expenditure cost.

[0003] The traditional double-sided display structure displays different pictures through split-screen processing, that is, the double-sided display structure is divided into two, the left half displays one picture, and the right half displays another picture. This makes the display screen smaller and the screen utilization rate is low. In addition, the double-sided display is mainly achieved by liquid crystal display panels or organic light-emitting display panels, and the cost is higher than configuring an electronic label for each dish. That is, how to enable customers to see the prices of two different products on the left and right sides while reducing expenditure costs has become an urgent problem to be solved. Summary of the invention

[0004] The purpose of the present application is to provide an electronic paper and a display device, which realizes the reflection of light in different directions by controlling the movement of electrophoretic particles, so as to display pictures in different directions without changing the size of the display picture, thereby improving the utilization rate of the electronic paper display area and reducing costs.

[0005] The present application discloses an electronic paper, which includes a plurality of electronic paper pixels arranged on a substrate, each electronic paper pixel including a first electronic paper pixel and a second electronic paper pixel, the first electronic paper pixel including a first accommodating cavity and a first electrode pair, the second electronic paper pixel including a second accommodating cavity and a second electrode pair, black electrophoretic particles and white electrophoretic particles are arranged in the first accommodating cavity and the second accommodating cavity; the first electrode pair controls the black electrophoretic particles and the white electrophoretic particles in the first accommodating cavity to move to two opposite sides of the first accommodating cavity respectively, and reflects ambient light in 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 reflects 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.

[0006] Optionally, the electronic paper further comprises a pair of box substrates, a common electrode layer is provided on a surface of the pair of box substrates close to the substrate, the first accommodating cavity and the second accommodating cavity are both right-angled trapezoids, the first electrode pair comprises a first electrode and a second electrode, the first electrode and the second electrode are respectively arranged on the hypotenuse and the right-angle side 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 hypotenuse and the right-angle side of the second accommodating cavity; the angle between the hypotenuse of the first accommodating cavity and the common electrode layer is a1, and the angle between the hypotenuse of the second accommodating cavity and the common electrode layer is a2;

[0007] Among them, a1=a2, 20°≤a1≤60°, the common electrode layer is correspondingly connected to the first electrode and the third electrode, the first electrode and the second electrode control the white electrophoretic particles in the first receiving cavity to move to the hypotenuse of the first receiving cavity to reflect ambient light; the third electrode and the fourth electrode control the white electrophoretic particles in the second receiving cavity to move to the hypotenuse of the second receiving cavity to reflect ambient light.

[0008] Optionally, the electronic paper pixel also includes a third electronic paper pixel, which is arranged between the first electronic paper pixel and the second electronic paper pixel, and includes a third accommodating cavity and a third electrode pair, and black electrophoretic particles and white electrophoretic particles are arranged in the third accommodating cavity. The third accommodating cavity is arranged in a rectangular shape, and the third electrode pair includes a fifth electrode and a sixth electrode, and the fifth electrode and the sixth electrode are relatively arranged on both sides of the third accommodating cavity, and the sixth electrode, the second electrode, and the fourth electrode are arranged on the same layer on the substrate.

[0009] Optionally, the top height of the third accommodating cavity is lower than the top height of the first accommodating cavity and the top height of the second accommodating cavity, the top height of the first accommodating cavity and the top height of the second accommodating cavity are equal, and the first accommodating cavity and the second accommodating cavity are symmetrically arranged with the third accommodating cavity as the center; a black light-absorbing layer is provided 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-absorbing layer is perpendicular to the fifth electrode, and the black light-absorbing layer is attached to the outer wall of the first accommodating cavity and the outer wall of the second accommodating cavity.

[0010] Optionally, the first accommodating cavity of the first electronic paper pixel and the second accommodating cavity of the second electronic paper pixel are arranged in a rectangular shape and are vertically arranged on the substrate; along the extension direction of the substrate, the first accommodating cavity is provided with a first electrode and a second electrode on the left and right sides respectively, and the second accommodating cavity is provided with a second electrode and a third electrode on the left and right sides respectively, and the second electrode is a common electrode of the first accommodating cavity and the second accommodating cavity; the tops of the first accommodating cavity and the second accommodating cavity are covered with a black cover plate; two adjacent electronic paper pixels are arranged at intervals, and the substrate where the interval area is located is a black base.

[0011] Optionally, a transparent glass layer is provided on the substrate, the first accommodating cavity and the second accommodating cavity are provided on a surface of the transparent glass layer away from the substrate, a third accommodating cavity is provided between the transparent glass layer and the substrate, black electrophoretic particles and white electrophoretic particles are provided in the third accommodating cavity, and along the direction in which ambient light is positively incident on the electronic paper, the third accommodating cavity is located directly below the spacing area between two adjacent electronic paper pixels, and a fifth electrode and a sixth electrode are provided above and below the third accommodating cavity

[0012] Optionally, the electronic paper further comprises a box substrate, a surface of the box substrate close to the substrate is provided with an anti-reflection film layer, the anti-reflection film layer comprises hollow silica particles, and the porosity of the hollow silica particles is 30% to 50%.

[0013] Optionally, the first accommodating cavity and the second accommodating cavity are arranged in a rectangular shape, a black column is provided between the first accommodating cavity and the first accommodating cavity, the first electrode pair of the first accommodating cavity and the second electrode pair of the second accommodating cavity are parallel to the black column and are arranged 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; the distance between two adjacent electronic paper pixels is set within a first preset range.

[0014] The present application also discloses a display device, which includes an electronic paper as described above 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, controls the electrophoretic particles in the first accommodating cavity and the second accommodating cavity to move, so as to reflect ambient light and realize image display on both sides of the electronic paper.

[0015] Optionally, 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 interconnected, and a plurality of first data lines, a plurality of second data lines and a plurality of third data lines are provided on the substrate of the electronic paper, the first data line is connected to the first electrode and outputs a data voltage signal to the first electrode, the third data line is connected to the second electrode and outputs a data voltage signal to the second electrode, and the voltage difference between the first electrode and the second electrode in the first electrode pair is controlled according to the voltage change on the first data line and the third data line to realize the movement of the black electrophoretic particles and the white electrophoretic particles in the first accommodating cavity; the second data line is connected to the third electrode and outputs a data voltage signal to the third electrode, the third data line is connected to the fourth electrode and outputs a data voltage signal to the fourth electrode, and the voltage difference between the third electrode and the fourth electrode in the second electrode pair is controlled according to the voltage change on the second data line and the third data line to realize the movement of the black electrophoretic particles and the white electrophoretic particles in the second accommodating cavity.

[0016] Compared with the existing solution of dividing two display areas on a double-sided display panel to display two pictures, the present application uses electronic paper to achieve double-sided display, and does not divide the display area of ​​the electronic paper into two display areas. Instead, the electrophoretic particles of the electronic paper are controlled to move, and the original direct display light is reflected to the two sides of the electronic paper through the reflective structure, so that the pictures are displayed on both sides of the electronic paper respectively. There is no need to cut the electronic paper, and the entire display surface of the electronic paper can be used. People on both sides of the electronic paper can see the pictures displayed on the large screen, which improves the screen utilization rate and user experience. The pictures displayed on the two sides cannot be viewed by each other, avoiding mutual interference and reducing the cost of double-sided display. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation methods of the present application, and together with the text description, explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0018] Figure 1 is a schematic structural diagram of an electronic paper according to the first embodiment of the present application;

[0019] Figure 2 is a schematic structural diagram of an electronic paper according to a second embodiment of the present application;

[0020] Figure 3 is a schematic structural diagram of another electronic paper according to the second embodiment of the present application;

[0021] Figure 4 is a schematic structural diagram of an electronic paper according to the third embodiment of the present application;

[0022] Figure 5 is a schematic structural diagram of an electronic paper according to a fourth embodiment of the present application;

[0023] Figure 6 is a schematic structural diagram of an electronic paper according to the fifth embodiment of the present application;

[0024] Figure 7 is a schematic structural diagram of an electronic paper according to a sixth embodiment of the present application;

[0025] Figure 8 is a structural schematic diagram of an electronic paper according to the seventh embodiment of the present application;

[0026] Fig. 9 is a structural schematic diagram of a display device according to an eighth embodiment of the present application;

[0027] Fig.10 It is a structural schematic diagram of a display device of the ninth embodiment of the present application.

[0028] Among them, 10, display device; 100, electronic paper; 110, substrate; 111, first data line; 112, second data line; 113, black substrate; 120, electronic paper pixel; 130, first electronic paper pixel; 131, first accommodating cavity; 132, first electrode pair; 133, first electrode; 134, second electrode; 140, second electronic paper pixel; 141, second accommodating cavity; 142, second electrode pair; 143, third electrode; 144, fourth electrode; 150, third electronic paper pixel; 151. third accommodating cavity; 152. third electrode pair; 153. fifth electrode; 154. sixth electrode; 160. electrophoretic particles; 161. black electrophoretic particles; 162. white electrophoretic particles; 163. black cover plate; 170. black light absorbing layer; 180. anti-reflection film layer; 181. hollow silica particles; 190. black columns; 200. box substrate; 210. common electrode layer; 220. transparent glass layer; 300. driving circuit; 310. first driving chip; 320. second driving chip. DETAILED DESCRIPTION

[0029] It should be understood that the terms used herein, the specific structures and functional details disclosed are only for describing specific embodiments and are representative, but the present application can be implemented in many alternative forms and should not be construed as being limited to only the embodiments described herein.

[0030] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "including" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may exist or be added.

[0031] In addition, terms indicating orientation or positional relationships, such as “center,” “lateral,” “up,” “down,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inside,” and “outside,” are described based on the orientation or relative positional relationships shown in the accompanying drawings and are merely simplified descriptions for the convenience of describing the present application. They do not indicate that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limitations on the present application.

[0032] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] The present application is described in detail below with reference to the accompanying drawings and optional embodiments.

[0034] Embodiment 1:

[0035] like Figure 1As shown, 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 arranged 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 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, and black electrophoretic particles 161 and white electrophoretic particles 162 are arranged in the first accommodating cavity 131 and the second accommodating cavity 141; the first electrode pair 132 controls the black electrophoretic particles 161 and the white electrophoretic particles 162 in the first accommodating cavity 131. The sub-electrodes 162 move to the two opposite sides of the first accommodating cavity 131 respectively, and the white electrophoretic particles 162 moved to the upper side reflect the ambient light in the first direction to form a first display screen. If display is not needed, the black electrophoretic particles 161 move to the upper side to absorb the ambient light; the second electrode pair 142 controls the electrophoretic particles 160 in the second accommodating cavity 141 to move to the two opposite sides of the second accommodating cavity 141, and the white electrophoretic particles 162 moved to the upper side reflect the ambient light in the second direction to form a second display screen; wherein, the first direction and the second direction are arranged oppositely, one toward the left side and the other toward the right side, and the angle formed by the first direction and the second direction at the display surface is a, 0°<a<180°.

[0036] The present application is an electronic paper 100, and customers in a supermarket can see the prices of two different commodities on the left and right sides of the electronic paper. 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, that is, corresponding to two display areas, and the two electronic paper pixels are independent of each other, and can realize the display of the same or different pictures.

[0037] Specifically, the first electronic paper pixel 130 includes a first accommodating cavity 131 and a first electrode pair 132, and 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 both provided with black electrophoretic particles 161 and white electrophoretic particles 162. The black electrophoretic particles 161 can absorb light, and the white electrophoretic particles 162 reflect light to both sides, and the two display areas display the images on both sides correspondingly; the black electrophoretic particles 161 and the white electrophoretic particles 162 in the first accommodating cavity 131 are controlled by the first electrode pair 132 to be reflected to the left and right sides; The first accommodating cavity 131 is moved to the opposite sides of the first accommodating cavity 131, and reflects the ambient light in the 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 the opposite sides of the second accommodating cavity 141, and reflects the ambient light in the second direction to form a second display screen; the screens on both sides can be displayed using the entire screen of the electronic paper 100, and the screens on both sides can only be seen by people on the corresponding sides without interfering with each other; the display screens on both sides are displayed accurately to the pixel unit, and this precise control not only enhances the clarity of the image, but also improves the overall visual experience. Of course, according to different needs and screen sizes, it is also possible to use a method where multiple pixels correspond to one display area to optimize the display effect and save resources. In specific implementation, the size of the minimum display area unit will be determined according to the specific specifications of the screen and the expected display quality.

[0038] In this embodiment, the design of the electronic paper 100 is not limited to a single display color mode, which means that it can support black and white display, suitable for scenes requiring high contrast and energy saving, and can also realize color display, meeting the user's demand for rich colors.

[0039] Embodiment 2:

[0040] like Figure 2As shown, as the second embodiment of the present application, it is a further improvement and refinement of the above-mentioned first embodiment. The electronic paper 100 also includes a box substrate 200, and a common electrode layer 210 is provided on a surface of the box substrate 200 close to the substrate 110. The first accommodating cavity 131 and the second accommodating cavity 141 are both right-angled trapezoids. The first electrode pair 132 includes a first electrode 133 and a second electrode 134, and the first electrode 133 and the second electrode 134 are respectively arranged on the hypotenuse and the right-angle side of the first accommodating cavity 131; the angle between the hypotenuse of the first accommodating cavity and the common electrode layer 210 is a1, and the angle between the hypotenuse of the second accommodating cavity and the common electrode layer 210 is a2; wherein a1=a2, 20°≤a1≤60°, and the The second electrode pair 142 includes a third electrode 143 and a fourth electrode 144, and the third electrode 143 and the fourth electrode 144 are respectively arranged on the hypotenuse and the right-angled side of the second accommodating cavity 141; wherein the common electrode layer 210 is correspondingly connected to the first electrode 133 and the third electrode 143, and 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 hypotenuse of the first accommodating cavity 131 to reflect ambient light; 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 hypotenuse of the second accommodating cavity 141 to reflect ambient light, and each second electrode 134 and the fourth electrode 144 are arranged at intervals and are not connected to each other.

[0041] Further, the right-angled side of the first accommodating cavity 131 and the right-angled side of the second accommodating cavity 141 are on the same horizontal plane, the lower bottom of the first accommodating cavity 131 and the lower bottom of the second accommodating cavity 141 are arranged to overlap, the lower bottom is perpendicular to the substrate 110, the first accommodating cavity 131 and the second accommodating cavity 141 are arranged axially symmetrically with the lower bottom as the central axis, and the hypotenuse forms an inverted V-shaped structure; wherein, the angle between the hypotenuse of the first accommodating cavity 131 and the central axis and the angle between the hypotenuse of the second accommodating cavity 141 and the central axis are equal, and are greater than or equal to 40° and less than or equal to 70°, and are usually taken as 45°, which is suitable for viewing by people of different heights within a certain angle range; the angle between the hypotenuse of the first accommodating cavity 131 and the central axis and the angle between the hypotenuse of the first accommodating cavity and the common electrode layer 210 are complementary angles to each other, and the angle between the hypotenuse of the second accommodating cavity 141 and the central axis and the angle between the hypotenuse of the second accommodating cavity and the common electrode layer 210 are complementary angles to each other.

[0042] This embodiment mainly moves the white electrophoretic particles 162 and the black electrophoretic particles 161 on the upper and lower sides, and by setting the bevel edges, the white electrophoretic particles 162 are arranged in an inclined manner to achieve reflective display at different angles on both sides. Figure 3 As shown, the two trapezoidal structures can also be arranged with the upper bases overlapped, the first accommodating cavity 131 and the second accommodating cavity 141 are arranged axially symmetrically with the upper base as the central axis, and the hypotenuse forms a V-shaped structure, the ambient light on the left side is incident on the third electrode on the right side, 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 side, and the picture is displayed on the left side of the electronic paper 100, and the ambient light on the right side is incident on the first electrode 133 on the left side. 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 display the picture on the right side of the electronic paper 100. The angle formed between the first electrode 133 and the third electrode 143 is generally between 60° and 120°, which can not only receive more ambient light, but also facilitate viewing by people at different heights on the left and right sides, thereby having a better display effect and being more convenient during the manufacturing process, thereby avoiding the angle being too small, resulting in a high inclination and thus causing a broken line.

[0043] Embodiment 3:

[0044] like Figure 4As shown, as the third embodiment of the present application, it is a further improvement and refinement of the above-mentioned second embodiment. In order to improve the display richness of the electronic paper 100 and save the number of electronic display papers in the supermarket, the electronic paper 100 in this embodiment can realize display at three angles of left, middle and right, that is, not only the people on the left and right sides of the electronic paper 100 can see the display picture, but also the person in the middle can see the display picture. The display pictures seen at the three positions can be the same or different, and corresponding driving circuits 300 can be set to realize the display of the picture; specifically, in terms of structure, the electronic paper pixel 120 also includes a third electronic paper pixel 150, and the third electronic paper pixel 150 is arranged 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 rectangular. 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 relatively arranged on both sides of the third accommodating cavity 151. The sixth electrode 154 and the second electrode 134, as well as the fourth electrode 144 are arranged on the substrate 110 in the same layer with intervals. The fifth electrode 153 is generally connected to the pixel electrode layer through a via hole. The top height of the first accommodating cavity 131 is equal to the top height of the second accommodating cavity 141. The first accommodating cavity 131 and the second accommodating cavity 141 are symmetrically arranged with the third accommodating cavity 151 as the center.

[0045] 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 hypotenuse of the first accommodating cavity 131 to reflect ambient light and 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 hypotenuse of the second accommodating cavity 141 to reflect ambient light and 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 realize image display in the middle; in order to avoid the display images on the three sides from interfering with each other, Influence, 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 a black light absorbing layer 170 is provided between the top of the first accommodating cavity 131 and the top of the third accommodating cavity 151, and between the top of the first accommodating cavity 131 and the top of the third accommodating cavity 151. The black light absorbing layer 170 is perpendicular to the fifth electrode 153, and the black light absorbing layer 170 is attached to the sides of the first accommodating cavity 131 and the second accommodating cavity 141. The black light absorbing layer 170 can absorb ambient light coming in from the left and right sides to avoid the white electrophoretic particles 162 in the middle reflecting ambient light to the left and right sides when one of the left and right sides does not need to be displayed, thereby affecting the display effect of the left and right sides.

[0046] Embodiment 4:

[0047] like Figure 5 As shown, as the fourth embodiment of the present application, it is a further definition and refinement of the above-mentioned first embodiment. Different from the above-mentioned second embodiment and third embodiment, the first accommodating cavity 131 and the second accommodating cavity 141 are arranged in a rectangular shape, not a trapezoidal shape. A black column 190 is arranged 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 are arranged perpendicular to the substrate 110. A black column 190 is arranged between the accommodating cavities corresponding to every two sub-pixels, and the height of the black column 190 is higher than the height of the first electrode pair 132 and the second electrode pair 142. The distance between two adjacent electronic paper pixels is set within a first preset range.

[0048] In this embodiment, voltage is applied to the electrodes in the electrode pair, and the white electrophoretic particles 162 and the black electrophoretic particles 161 move to the left and right sides. The ambient light at a certain angle to the light incident surface on the left and right sides enters the pixel structure and is reflected back by the white electrophoretic particles 162, thereby realizing the display of the picture. Usually, when both left and right sub-pixels need to be displayed, the white electrophoretic particles move to an electrode close to the black column 190, and the light on the left and right sides is incident on the white electrophoretic particles 162 and is reflected back to form the left and right pictures. If the left side needs a picture but the right side does not, the black electrophoretic particles 161 in the second accommodating cavity on the right side move to the side close to the black column, and the white electrophoretic particles 162 also move to the side away from the black column 190. Because the height of the black column 190 is greater than the height of the accommodating cavity, the distance between two adjacent electronic paper pixels is set within the first preset range. At this time, the light on the left side will be blocked by the black column 190, so it will not interfere with the display picture on the left side. The distance between the electronic paper pixels can be set according to the specific display angle and the height of the black column, and can be controlled within the first preset range, such as 5um to 10um.

[0049] Embodiment 5:

[0050] like Figure 6 As shown in the figure, as the fifth embodiment of the present application, different from the fourth embodiment, the first electronic paper pixel 130 and the second electronic paper pixel 140 in each electronic paper pixel 120 share one electrode, that is, a common cathode arrangement. Specifically, the first accommodating cavity 131 of the first electronic paper pixel 130 and the second accommodating cavity 141 of the second electronic paper pixel 140 are arranged in a rectangular shape and are vertically arranged on the substrate 110; along the extension direction of the substrate 110, that is, Figure 6In the horizontal direction, the first accommodating cavity 131 is provided with a first electrode 133 and a second electrode 134 on the left and right sides, respectively, and the second accommodating cavity 141 is provided with a second electrode 134 and a third electrode 143 on the left and right sides, respectively, and 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 provided in both accommodating cavities, and 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 accommodating cavity The black electrophoretic particles 161 and the white electrophoretic particles 162 move, and when the white electrophoretic particles 162 move to the first electrode 133 or the third electrode 143, they reflect light, so that the picture on the corresponding side can be displayed. When the black electrophoretic particles 161 move to the first electrode 133 and the third electrode 143, they absorb ambient light without reflecting and displaying the picture; wherein, the tops of the first accommodating cavity 131 and the second accommodating cavity 141 are covered with a black cover plate 163; two adjacent electronic paper pixels 120 are arranged at intervals, and the substrate 110 where the interval area is located is a black base 113.

[0051] This embodiment can be understood as setting an opaque electrode, i.e., a common cathode, in a charged particle container, dividing the charged particle container into two, forming pixels displayed on the left and right sides; the left and right sides of each pixel are jointly controlled by a transparent ITO electrode and a common cathode, and every two pixels together are covered by a black cover plate to avoid confusion. There is a black substrate under the pixel to support different images from the left and right directions; in the power supply setting, a common cathode is used for grounding, and the positive and negative polarities of the ITO electrodes on the left and right sides are controlled by the data lines of the IC. For example, black particles are positively charged and white particles are negatively charged. If a negative voltage is passed through the ITO electrode, black particles are attracted and white particles are repelled, thereby displaying black.

[0052] Embodiment 6:

[0053] like Figure 7 As shown, as the sixth embodiment of the present application, it is a further improvement on the fifth embodiment mentioned above. Different from the three-way display in the third embodiment mentioned above, in this embodiment, a transparent glass layer is provided on the substrate 110, and the first accommodating cavity and the second accommodating cavity are arranged on the side of the transparent glass layer 220 away from the substrate 110. A third accommodating cavity 151 is provided between the transparent glass layer 220 and the substrate, and black electrophoretic particles 161 and white electrophoretic particles 162 are provided in the third accommodating cavity 151. Along the direction in which the ambient light is incident on the electronic paper, the third accommodating cavity 151 is located directly below the spacing area between two adjacent electronic paper pixels 120, and a fifth electrode 153 and a sixth electrode 154 are provided above and below the third accommodating cavity 151.

[0054] An electronic paper pixel can be provided in the interval area of ​​each electronic paper pixel 120 to realize the display of the middle area. The two-way display in the three-way display is the same as the fifth embodiment mentioned above, except that there is an additional forward display. By arranging an ITO electrode and a charged particle container, i.e., a third containing cavity, on the base layer, the upper and lower positive and negative ITO electrodes, i.e., the fifth electrode 153 and the sixth electrode 154, simultaneously control the direction of the charged particles to control the display color of the picture, thereby forming a forward display content.

[0055] Embodiment 7:

[0056] like Figure 8 As shown, as the seventh embodiment of the present application, the electronic paper 100 also includes a box substrate 200. In order to improve the brightness of the electronic paper 100 on both sides, the box substrate 200 is provided with an anti-reflection film layer 180 on one side close to the substrate 110. The anti-reflection film layer 180 is arranged on the box substrate 200 as a whole layer, and the thickness can be selected and set according to the requirement of display brightness. When the whole layer is arranged, the thickness of the whole layer is uniformly set; the anti-reflection film layer 180 includes hollow silica particles 181, and the porosity of the hollow silica particles is 30% to 50%; so that when the ambient light reaches the anti-reflection film layer 180 after passing through the box substrate 200, the anti-reflection film layer 180 will increase the brightness of the light emitted to both sides, improve the display effect, and further reduce the refractive index of the anti-reflection film layer 180, so that the glass coated with the anti-reflection film layer 180 has a lower reflectivity.

[0057] Embodiment 8:

[0058] like Fig. 9 As shown, as the eighth embodiment of the present application, a display device 10 is disclosed. The display device 10 includes a driving circuit 300 and an electronic paper 100 as in any of the above embodiments. The electronic paper 100 is connected to the driving circuit 300. The driving signals of the electronic paper 100, such as data signals, scanning signals, touch signals, etc., are all provided by the driving circuit 300. According to different electronic papers 100, the corresponding driving circuit 300 is also different.

[0059] Among them, the driving circuit 300 outputs a driving signal 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, controls the electrophoretic particles 160 in the first accommodating cavity 131 and the second accommodating cavity 141 to move to reflect ambient light and realize the picture display on both sides of the electronic paper 100.

[0060] like Fig.10 As shown, as the ninth embodiment of the present application, refer to Figure 2 , Figure 4 and Fig.10As shown, 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 connected to each other, a plurality of first data lines 111, a plurality of second data lines 112 and a plurality of third data lines are provided on the substrate 110 of the electronic paper 100, the first data line is connected to the first electrode 133 and outputs a data voltage signal to the first electrode 133, the third data line is connected to the second electrode 134 and outputs a data voltage signal to the second electrode 134, according to the first data line and the third data line The voltage change controls the voltage difference between the first electrode 133 and the second electrode 134 in the first electrode pair, thereby realizing the movement of the black electrophoretic particles 161 and the white electrophoretic particles 162 in the first accommodating cavity; the second data line is connected to the third electrode 143, and outputs a data voltage signal to the third electrode 143; the third data line is connected to the fourth electrode 144, and outputs a data voltage signal to the fourth electrode; the voltage difference between the third electrode 143 and the fourth electrode 144 in the second electrode pair is controlled according to the voltage change on the second data line and the third data line, thereby realizing the movement of the black electrophoretic particles 161 and the white electrophoretic particles 162 in the second accommodating cavity.

[0061] In this embodiment, the two electrodes arranged on the substrate are interconnected and can be connected to the same data line to realize a common cathode and receive the same data voltage, while the two electrodes arranged above are respectively connected to different data lines to receive different voltages. In other words, the movement of the electrophoretic particles in the accommodating cavity can be controlled by adjusting the voltage on the first data line and the second data line, thereby realizing the reflection of ambient light to display the picture.

[0062] Furthermore, the driving circuit 300 may include two driving chips, a first driving chip 310 and a second driving chip 320, the two driving chips respectively output voltage driving signals to corresponding data lines, the first driving chip 310 outputs a corresponding driving voltage signal to the first data line 111, and the second driving chip 320 outputs a corresponding voltage driving signal to the third data line, the voltage on the first data line is different from the voltage on the second data line, and the voltage difference between the first electrode 133 and the second electrode 134 in the first electrode pair 132 is mainly controlled by the voltage change on the first data line , realizing 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 signal to the second data line 112, and the second driving chip 320 outputs the corresponding voltage driving signal to the third data line, the voltage on the first data line is different from the voltage on the second data line, and the voltage difference between the third electrode 143 and the fourth electrode 144 in the second electrode pair 142 is mainly controlled by the voltage change on the first data line to realize the movement of the black electrophoretic particles 161 and the white electrophoretic particles 162 in the second accommodating cavity 141.

[0063] It should be noted that the inventive concept of the present application can form a large number of embodiments, but the length of the application document is limited and it is impossible to list them one by one. Therefore, under the premise of no conflict, the embodiments or technical features described above can be arbitrarily combined to form new embodiments. After the embodiments or technical features are combined, the original technical effects will be enhanced.

[0064] The above content is a further detailed description of the present application in combination with specific optional implementation methods, and it cannot be determined that the specific implementation of the present application is limited to these descriptions. For ordinary technicians in the technical field to which the present application belongs, several simple deductions or substitutions can be made without departing from the concept of the present application, which should be deemed to fall within the scope of protection of the present application.

Claims

1. An electronic paper, characterized in that: The invention comprises a plurality of electronic paper pixels arranged on a substrate, 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 the black electrophoretic particles and the white electrophoretic particles in the first accommodating cavity to move to two opposite sides of the first accommodating cavity respectively, and reflects ambient light in a first direction to form a first display image; 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 reflects ambient light in a second direction to form a second display image; Wherein, the first display picture and the second display picture are displayed on two sides of the electronic paper respectively, and the first direction and the second direction are left and right directions of the display side of the electronic paper; The first accommodating cavity and the second accommodating cavity are arranged in a rectangular shape, a black column is arranged between the first accommodating cavity and the first accommodating cavity, the first electrode pair of the first accommodating cavity and the second electrode pair of the second accommodating cavity are parallel to the black column and are arranged 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; the distance between two adjacent electronic paper pixels is set within a first preset range.

2. An electronic paper, characterized in that: The invention comprises a plurality of electronic paper pixels arranged on a substrate, 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 the black electrophoretic particles and the white electrophoretic particles in the first accommodating cavity to move to two opposite sides of the first accommodating cavity respectively, and reflects ambient light in a first direction to form a first display image; 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 reflects ambient light in a second direction to form a second display image; Wherein, the first display picture and the second display picture are displayed on two sides of the electronic paper respectively, and the first direction and the second direction are left and right directions of the display side of the electronic paper; The electronic paper further comprises a pair of box substrates, a common electrode layer is provided on a surface of the pair of box substrates close to the substrate, the first accommodating cavity and the second accommodating cavity are both right-angled trapezoids, the first electrode pair comprises a first electrode and a second electrode, the first electrode and the second electrode are respectively arranged on the hypotenuse and the right-angle side 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 hypotenuse and the right-angle side of the second accommodating cavity; the angle between the hypotenuse of the first accommodating cavity and the common electrode layer is a1, and the angle between the hypotenuse of the second accommodating cavity and the common electrode layer is a2; Among them, a1=a2, 20°≤a1≤60°, the common electrode layer is correspondingly connected to the first electrode and the third electrode, the first electrode and the second electrode control the white electrophoretic particles in the first receiving cavity to move to the hypotenuse of the first receiving cavity to reflect ambient light; the third electrode and the fourth electrode control the white electrophoretic particles in the second receiving cavity to move to the hypotenuse of the second receiving cavity to reflect ambient light.

3. The electronic paper according to claim 2, characterized in that: The electronic paper pixel also includes a third electronic paper pixel, which is arranged 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 arranged in the third accommodating cavity. The third accommodating cavity is arranged in a rectangular shape. The third electrode pair includes a fifth electrode and a sixth electrode. The fifth electrode and the sixth electrode are arranged on two sides of the third accommodating cavity opposite to each other. The sixth electrode, the second electrode, and the fourth electrode are arranged on the same layer on the substrate.

4. The electronic paper according to claim 3, characterized in that: The top height of the third accommodating cavity is lower than the top height of the first accommodating cavity and the top height of the second accommodating cavity, the top height of the first accommodating cavity and the top height of the second accommodating cavity are equal, and the first accommodating cavity and the second accommodating cavity are symmetrically arranged with the third accommodating cavity as the center; A black light absorbing layer is provided 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 absorbing layer is perpendicular to the fifth electrode, and the black light absorbing layer is attached to the outer wall of the first accommodating cavity and the outer wall of the second accommodating cavity.

5. An electronic paper, characterized in that: The invention comprises a plurality of electronic paper pixels arranged on a substrate, 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 the black electrophoretic particles and the white electrophoretic particles in the first accommodating cavity to move to two opposite sides of the first accommodating cavity respectively, and reflects ambient light in a first direction to form a first display image; 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 reflects ambient light in a second direction to form a second display image; Wherein, the first display picture and the second display picture are displayed on two sides of the electronic paper respectively, and the first direction and the second direction are left and right directions of the display side of the electronic paper; The first accommodating cavity of the first electronic paper pixel and the second accommodating cavity of the second electronic paper pixel are arranged in a rectangular shape and are vertically arranged on the substrate; Along the extension direction of the substrate, the first accommodating cavity is provided with a first electrode and a second electrode on the left and right sides respectively, and the second accommodating cavity is provided with a second electrode and a third electrode on the left and right sides respectively, and the second electrode is a common electrode of the first accommodating cavity and the second accommodating cavity; the tops of the first accommodating cavity and the second accommodating cavity are covered with a black cover plate; two adjacent electronic paper pixels are arranged at intervals, and the substrate where the interval area is located is a black base.

6. The electronic paper according to claim 5, characterized in that: A transparent glass layer is provided on the substrate, the first accommodating cavity and the second accommodating cavity are arranged on a surface of the transparent glass layer away from the substrate, a third accommodating cavity is provided between the transparent glass layer and the substrate, black electrophoretic particles and white electrophoretic particles are provided in the third accommodating cavity, and along the direction in which ambient light is positively incident on the electronic paper, the third accommodating cavity is located directly below the spacing area between two adjacent electronic paper pixels, and a fifth electrode and a sixth electrode are provided above and below the third accommodating cavity.

7. The electronic paper according to claim 1, characterized in that: The electronic paper further comprises a box substrate, a surface of the box substrate close to the substrate is provided with an anti-reflection film layer, the anti-reflection film layer comprises hollow silica particles, and the porosity of the hollow silica particles is 30% to 50%.

8. A display device, characterized in that: It comprises the electronic paper as described in any one of claims 1 to 7 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, controls the electrophoretic particles in a first accommodating cavity and a second accommodating cavity to move, so as to reflect ambient light and realize image display on both sides of the electronic paper.

9. The display device according to claim 8, characterized in that: 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 interconnected, a plurality of first data lines, a plurality of second data lines and a plurality of third data lines are provided on the substrate of the electronic paper, the first data line is connected to the first electrode and outputs a data voltage signal to the first electrode, the third data line is connected to the second electrode and outputs a data voltage signal to the second electrode, the voltage difference between the first electrode and the second electrode in the first electrode pair is controlled according to the voltage change on the first data line and the third data line, so as to realize the movement of the black electrophoretic particles and the white electrophoretic particles in the first accommodating cavity; the second data line is connected to the third electrode and outputs a data voltage signal to the third electrode, the third data line is connected to the fourth electrode and outputs a data voltage signal to the fourth electrode, the voltage difference between the third electrode and the fourth electrode in the second electrode pair is controlled according to the voltage change on the second data line and the third data line, so as to realize the movement of the black electrophoretic particles and the white electrophoretic particles in the second accommodating cavity.

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