Electrowetting display

Abstract

The invention discloses an electrowetting display, and relates to the technical field of display devices. The first conductive layer is used for being electrically connected with the first electrode, the first pixel wall is connected to the first conductive layer, and a plurality of pixel grids are defined by the first pixel wall. The second conductive layer is used for being electrically connected with the second electrode. The second pixel wall is connected to the second conductive layer. Quantum dots are arranged in at least one pixel grid, the quantum dots are mixed with the second non-polar liquid in the corresponding pixel grid, and the color of the quantum dots is matched with that of the corresponding second non-polar liquid. The quantum dots are arranged in the second non-polar liquid, and the color of the quantum dots is matched with that of the corresponding second non-polar liquid. In the process that the electrowetting display displays an image, the quantum dots can absorb light of part of wavelengths and emit light corresponding to the color of the quantum dots, and the light emitted by the quantum dots in the pixel grids can be coupled with the light reflected by the corresponding second non-polar liquid, so that the saturation of the corresponding color is increased.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display devices, in particular to an electrowetting display. BACKGROUND

[0002] EWD (Electrowetting display) technology is to change the wetting of liquid on dielectric hydrophobic material by electric drive, so that the liquid drop spreads or shrinks, and after integration of the display, an observable optical change can be generated, which has the characteristics of fast response time, low voltage and low power consumption.

[0003] In the related art, the color saturation of the electrowetting display is low. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides an electrowetting display which can increase the color saturation of the electrowetting display.

[0005] The electrowetting display according to the first aspect of the present application comprises: a first conductive layer for electrically connecting with a first electrode; a first pixel wall connected to the first conductive layer, the first pixel wall defining a plurality of pixel cells; a first non-polar liquid arranged in the pixel cells, the first non-polar liquid being arranged in each of the pixel cells; a second conductive layer for electrically connecting with a second electrode, the second conductive layer being arranged spaced apart from the first conductive layer; a second pixel wall connected to the second conductive layer, the second pixel wall and the first pixel wall together defining the plurality of pixel cells; a second non-polar liquid arranged in the pixel cells, the second non-polar liquid being arranged in each of the pixel cells, the second non-polar liquid having one of red, blue and green color; wherein the electrowetting display further comprises quantum dots, at least one of the pixel cells being provided with quantum dots, the quantum dots being mixed with the second non-polar liquid in the corresponding pixel cell, the quantum dots matching the color of the corresponding second non-polar liquid.

[0006] The electrowetting display according to the present application has at least the following beneficial effects: In the scheme of the embodiment of the present application, in the pixel grid surrounded by the second pixel wall, quantum dots are arranged in the second non-polar liquid, the quantum dots and the second non-polar liquid are mixed with each other, and the quantum dots match the color of the corresponding second non-polar liquid. In the process of displaying an image by the electrowetting display, the quantum dots can absorb light of a part of wavelengths and emit light corresponding to the color of the quantum dots, the light emitted by the quantum dots in the pixel grid can be coupled with the light reflected by the corresponding second non-polar liquid, so as to increase the saturation of the corresponding color and increase the brightness and color gamut of the light to a certain extent.

[0007] According to some embodiments of the present application, each of the three sub-pixel grids corresponding to a single pixel grid is provided with the second non-polar liquid.

[0008] According to some embodiments of the present application, the quantum dots are arranged in at least two of the sub-pixel grids corresponding to a single pixel grid, and the quantum dots match the color of the second non-polar liquid in the corresponding sub-pixel grid.

[0009] According to some embodiments of the present application, each of the four sub-pixel grids corresponding to a single pixel grid is provided with the second non-polar liquid.

[0010] According to some embodiments of the present application, the electrowetting display further comprises a third conductive layer and a fourth conductive layer, and the third conductive layer, the first conductive layer, the fourth conductive layer and the second conductive layer are arranged in sequence along the thickness direction of the electrowetting display, the first non-polar liquid is located between the first conductive layer and the third conductive layer, and the second non-polar liquid is located between the fourth conductive layer and the second conductive layer.

[0011] According to some embodiments of the present application, the third conductive layer, the fourth conductive layer and the first conductive layer are made of transparent material, and light can pass through the third conductive layer, the fourth conductive layer and the first conductive layer to the second non-polar liquid and the quantum dots.

[0012] According to some embodiments of the present application, the electrowetting display further comprises a controller configured to control the first electrode and the second electrode, so as to adjust the electric field of the first conductive layer and the second conductive layer, and the controller is configured to adjust the electric field of the first conductive layer and the second conductive layer respectively, so as to control the opening degree of the first non-polar liquid and the opening degree of the second non-polar liquid respectively.

[0013] According to some embodiments of the present application, the material of the first pixel wall is a material capable of reflecting light.

[0014] According to some embodiments of the present application, the size of the quantum dots ranges from 2 nm to 20 nm.

[0015] According to some embodiments of the present application, a single pixel cell includes at least one sub-pixel cell, and the shape of the sub-pixel cell is a square when projected along the thickness direction of the electrowetting display.

[0016] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0017] The present application will be further described below in conjunction with the accompanying drawings and embodiments, in which: Figure 1 Structure diagram of an electrowetting display according to an embodiment of the present application; Figure 2 Structure top view of an electrowetting display according to an embodiment of the present application, showing pixel cells and sub-pixel cells; Figure 3 Structure cross-sectional view of an electrowetting display according to an embodiment of the present application.

[0018] Reference signs: 100, first conductive layer; 200, first pixel wall; 200a, pixel cell; 200b, sub-pixel wall; 300, first non-polar liquid; 400, second conductive layer; 500, second pixel wall; 600, second non-polar liquid; 700, quantum dot; 800, third conductive layer; 900, dielectric layer; 910, fourth conductive layer. DETAILED DESCRIPTION

[0019] The embodiments of the technical solutions of the present application will be described in detail below in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present application, and therefore only serve as examples, and cannot limit the protection scope of the present application.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs; the terms used herein are only for the purpose of describing specific embodiments of the present application, and are not intended to limit the present application; the terms "include" and "have" and any variations thereof in the specification and the above description of drawings of the present application are intended to cover non-exclusive inclusion.

[0021] In the description of the embodiments of the present application, the technical terms "first", "second", "third" and the like are only used to distinguish different objects, and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features. In the description of the embodiments of the present application, the meaning of "multiple" is more than two, unless otherwise explicitly and specifically limited.

[0022] Reference herein to "embodiments" means that the particular features, structures, or characteristics described in connection with the embodiments can be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily all refer to the same embodiment, nor is it necessarily independent or alternative embodiments to other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0023] In the description of the embodiments of the present application, the term "and / or" is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. In addition, the character " / " herein generally represents an "or" relationship between the front and rear associated objects.

[0024] In the description of the embodiments of the present application, the technical terms "top", "bottom", "upper", "lower" and the like indicate the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed, operated or used in a particular orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0025] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanical connection, or it can be electrical connection; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the embodiments of the present application can be understood according to the specific circumstances.

[0026] In the description of the embodiments of the present application, unless otherwise explicitly specified and limited, the technical term "contact" should be understood in a broad sense, which can be direct contact or contact through an intermediate medium layer, which can be contact between two objects in contact without interaction force, or contact between two objects in contact with interaction force.

[0027] In the related art, the electrowetting display technology has the advantages of fast response, high brightness, easy colorization, and the like, and can realize high-quality color video display. Meanwhile, the display pixels thereof are based on a soft material system with fluid as the core, and the display effect is not easily affected by the bending state, and is extremely easy to realize flexibility. Therefore, the electrowetting display technology has important value and significant advantages in the fields of outdoor portable and wearable flexible display. An electrowetting display is provided with a pixel wall to define a plurality of pixel grids, and a color filter or color ink is arranged in the pixel grid to display different colors. For example, when the color ink in the pixel grid is red, the red ink can absorb light other than red light, so as to reflect red light, and at this time, the pixel grid displays red. In this color display mode, the color saturation is low, thereby affecting the experience of a user to some extent.

[0028] In the embodiment of the present application, the quantum dots 700 are arranged in the second non-polar liquid 600, the color of the quantum dots 700 is within the required interval and matches the color of the corresponding second non-polar liquid 600, so that the light emitted by the quantum dots 700 can be coupled with the light reflected by the second non-polar liquid 600, and the overall color purity is improved and the display color gamut is expanded by virtue of the narrow half-height width of the quantum dots.

[0029] The electrowetting display is provided with a pixel wall to define a plurality of pixel grids 200a, and the pixel grid 200a includes a plurality of sub-pixel grids 200b, and the pixel wall isolates the plurality of sub-pixel grids 200b from each other. When the sub-pixel grid 200b is switched from a closed state to an open state under the action of an electric field, the polar liquid will squeeze the non-polar liquid, so that the non-polar liquid is gathered at the edge or corner in the corresponding sub-pixel grid 200b. Due to the limiting effect of the pixel wall, there is non-polar liquid in each sub-pixel grid 200b in the open state, thereby causing the aperture ratio of the sub-pixel grid 200b to be low, so that the color gamut and brightness of the pixel grid 200a are affected by the non-polar liquid and are reduced.

[0030] The basic principle of QD (Quantum Dot) color enhancement is to use the light-emitting characteristics of quantum dots 700, that is, the light photons released in the process of the electrons jumping from the valence band to the conduction band and returning to the valence band when the quantum dots 700 absorb light energy. Since the half-height width of the light emitted by the quantum dots 700 is very narrow, the corresponding color is purer, brighter and better in monochromaticity, so as to enhance the color performance of the original display material and device.

[0031] The quantum dot 700 is a semiconductor. Exemplarily, the quantum dot 700 can be indium phosphide, gallium nitride, cadmium selenide, lead sulfide, etc. As an inorganic semiconductor material, the quantum dot 700 has a narrow light-emitting spectrum, high color purity and good optical stability, and is increasingly concerned in the display field. The light-emitting of the quantum dot 700 is the result of the recombination of electrons and holes, or called exciton annihilation. To make the quantum dot 700 emit light, the quantum dot 700 first generates an exciton. There are generally two ways to generate an exciton, one is photo-induced, and the other is electric-induced; the embodiment of the present application adopts the photo-induced way. The quantum dot 700 forms an exciton after absorbing photons of a specific wavelength of ambient light, and emits fluorescence of a required wavelength after the exciton recombines.

[0032] The present application provides an electrowetting display. Referring to FIG. 1, the electrowetting display includes a first conductive layer 100, a first pixel wall 200, a first non-polar liquid 300, a second conductive layer 400, a second pixel wall 500, and a second non-polar liquid 600. The first conductive layer 100 is configured to be electrically connected with a first electrode. The first pixel wall 200 is connected to the first conductive layer 100, and the first pixel wall 200 defines a plurality of pixel cells 200a. The first non-polar liquid 300 is disposed in the pixel cells 200a. Exemplarily, the first non-polar liquid 300 can be ink, and the color of the first non-polar liquid 300 is black. The second conductive layer 400 is configured to be electrically connected with a second electrode. The second conductive layer 400 is arranged along a thickness direction of the electrowetting display and spaced apart from the first conductive layer 100. The second pixel wall 500 is connected to the second conductive layer 400, and the second pixel wall 500 and the first pixel wall 200 jointly define the plurality of pixel cells 200a. Exemplarily, the projection area of the first pixel wall 200 and the projection area of the second pixel wall 500 overlap with each other along the thickness direction of the electrowetting display. The thickness directions of the first conductive layer 100, the first pixel wall 200, the second conductive layer 400, and the second pixel wall 500 are parallel to the thickness direction of the electrowetting display. The second non-polar liquid 600 is disposed in the pixel cells 200a. Exemplarily, the color of the second non-polar liquid 600 is one of red, blue, and green. Exemplarily, the second non-polar liquid 600 is colored ink, and the second non-polar liquid 600 is one of red ink, blue ink, and green ink.

[0033] The electrowetting display further comprises quantum dots 700, the quantum dots 700 are arranged in at least one pixel cell 200a, the quantum dots 700 are mixed with the second non-polar liquid 600 in the corresponding pixel cell 200a, and the quantum dots 700 are matched in color with the corresponding second non-polar liquid 600. For example, the quantum dots 700 are one of red quantum dots 700, blue quantum dots 700 and green quantum dots 700, the red quantum dots 700 are mixed with red ink, the blue quantum dots 700 are mixed with blue ink, and the green quantum dots 700 are mixed with green ink. The red quantum dots 700 can absorb blue light and green light to emit red light, and the red light emitted by the red quantum dots 700 can be coupled with the red light reflected by the red ink, so that the color protection degree of the corresponding pixel cell 200a is high.

[0034] It can be understood that in the electrowetting display, a plurality of pixel cells 200a are defined by the first pixel wall 200 and the second pixel wall 500, each pixel cell 200a contains a polar liquid and a non-polar liquid, and the non-polar liquid can be the first non-polar liquid 300 or the second non-polar liquid 600. The non-polar liquid is usually ink, and the surface tension of the polar liquid in a single pixel cell 200a can be controlled by an external electric field. When no voltage is applied, the non-polar liquid spreads in the pixel cell 200a, and when the non-polar liquid spreads in the pixel cell 200a, the light is reflected by the non-polar liquid when it irradiates the pixel cell 200a. When the voltage is applied to the liquid in the pixel cell 200a from the state without voltage, the oil film formed by the spreading of the non-polar liquid is broken, and then the non-polar liquid moves to the corner of the pixel cell 200a, so that the pixel cell 200a changes from a closed state to an open state, so that the light can at least partially pass through the open area of the non-polar liquid.

[0035] In the scheme of the embodiment of the application, in the pixel cell 200a surrounded by the second pixel wall 500, the quantum dots 700 are arranged in the second non-polar liquid 600, the quantum dots 700 are mixed with the second non-polar liquid 600, and the quantum dots 700 are matched in color with the corresponding second non-polar liquid 600. In the process of displaying an image by the electrowetting display, the quantum dots 700 can absorb part of the light of a certain wavelength and emit light corresponding to the color of the quantum dots 700, and the light emitted by the quantum dots 700 in the pixel cell 200a can be coupled with the light reflected by the corresponding second non-polar liquid 600, thereby increasing the saturation of the corresponding color and increasing the brightness and color gamut of the light to a certain extent.

[0036] Exemplarily, the first pixel wall 200 includes first walls extending along a first direction and second walls extending along a second direction, the first direction and the second direction are arranged orthogonally, the number of the first walls is a plurality, the number of the second walls is a plurality, the plurality of the first walls are arranged at intervals along the second direction, and the plurality of the second walls are arranged at intervals along the first direction. The first walls and the second walls jointly enclose a plurality of sub-pixel grids 200b. The second pixel wall 500 includes third walls extending along the first direction and fourth walls extending along the second direction, the number of the third walls and the number of the fourth walls are both a plurality, the plurality of the third walls are arranged at intervals along the second direction, and the plurality of the fourth walls are arranged at intervals along the first direction. Projected along the thickness direction of the electrowetting display, the projection area of the first wall coincides with the projection area of the third wall, and the projection area of the second wall coincides with the projection area of the fourth wall.

[0037] In an embodiment, the single pixel grid 200a includes at least three sub-pixel grids 200b, and the second non-polar liquid 600 is arranged in the three sub-pixel grids 200b corresponding to the single pixel grid 200a. The pixel grid 200a refers to the smallest unit capable of independently displaying a color on the display device, and the resolution of the display device is usually measured by the number of pixel grids 200a, for example, a display device with a resolution of 1920*1080 represents that there are 1920 pixel grids 200a in the horizontal direction and 1080 pixel grids 200a in the vertical direction of the display device. The sub-pixel grid 200b refers to the smallest unit constituting the single pixel grid 200a, and the color displayed by the sub-pixel grid 200b is usually constant. Exemplarily, the colors of the second non-polar liquids 600 in the three sub-pixel grids 200b corresponding to the single pixel grid 200a are different, that is, the colors of the second non-polar liquids 600 in the three sub-pixel grids 200b are red, blue and green respectively. The single pixel grid 200a includes a plurality of sub-pixel grids 200b, so as to enrich the color of the electrowetting display. The combination of red sub-pixels, blue sub-pixels and green sub-pixels can make the corresponding pixel grid 200a reflect light of different colors, so as to enrich the color of the display device.

[0038] Exemplarily, the three sub-pixel grids 200b corresponding to the single pixel grid 200a are arranged along a straight line, and from left to right in the figure, the colors of the three sub-pixels are red, green and blue in turn. It can be understood that other embodiments of the present application do not limit the arrangement mode of the sub-pixel grids 200b corresponding to the single pixel grid 200a. Exemplarily, the sub-pixel grids 200b corresponding to the single pixel grid 200a can be arranged in the shape of a triangle.

[0039] Exemplarily, the side of the second conductive layer 400 facing the first conductive layer 100 has a light-reflecting surface, and the second conductive layer 400 can reflect external light when the light contacts the second conductive layer 400.

[0040] In another embodiment, the electrowetting display further comprises a light-emitting layer, which is located on the side of the second conductive layer 400 facing away from the first conductive layer 100. In the case of weak external light, the light emitted by the light-emitting layer passes through the second conductive layer 400 and the first conductive layer 100 in turn and is emitted to the outside.

[0041] In an embodiment, at least two of the sub-pixel grids 200b corresponding to a single pixel grid 200a are provided with quantum dots 700. For example, each of the sub-pixel grids 200b corresponding to a single pixel grid 200a is provided with quantum dots 700 of a corresponding color. The quantum dots 700 match the color of the second non-polar liquid 600 in the corresponding sub-pixel grid 200b. The quantum dots 700 can increase the color saturation of all the sub-pixel grids 200b in the corresponding pixel grid 200a. The sub-pixel grids 200b overlap with each other, so that the color saturation of the light reflected by the pixel grid 200a is high, thereby improving the overall color saturation and brightness of the electrowetting display.

[0042] In an embodiment, a single pixel grid 200a comprises four sub-pixel grids 200b. For example, the four sub-pixel grids 200b are arranged in a rectangular shape. In the sub-pixel grids 200b corresponding to a single pixel grid 200a, three of the sub-pixel grids 200b are provided with the second non-polar liquid 600. For example, the three sub-pixel grids 200b provided with the second non-polar liquid 600 correspond to a red sub-pixel grid 200b, a green sub-pixel grid 200b, and a blue sub-pixel grid 200b, respectively, and the sub-pixel grid 200b not provided with the second non-polar liquid 600 is a transparent sub-pixel grid 200b. In the case where the first non-polar liquid 300 in the sub-pixel grid 200b not provided with the second non-polar liquid 600 is in an open state, the transparent sub-pixel grid 200b can directly reflect external light sources, thereby improving the brightness of the corresponding pixel grid 200a.

[0043] In an embodiment, the electrowetting display further comprises a third conductive layer 800 and a fourth conductive layer 910, the third conductive layer 800, the first conductive layer 100, the fourth conductive layer 910 and the second conductive layer 400 are arranged in sequence along the thickness direction of the electrowetting display, the first non-polar liquid 300 is located between the first conductive layer 100 and the third conductive layer 800, and the second non-polar liquid 600 is located between the fourth conductive layer 910 and the second conductive layer 400. For example, the thickness direction of the third conductive layer 800 is arranged in parallel with the thickness direction of the first conductive layer 100, the first pixel wall 200 is located between the third conductive layer 800 and the first conductive layer 100, and the second pixel wall 500 is located between the fourth conductive layer 910 and the second conductive layer 400. The first conductive layer 100 and the fourth conductive layer 910 can separate the first non-polar liquid 300 and the second non-polar liquid 600, so that the movement of the first non-polar liquid 300 and the second non-polar liquid 600 is less likely to interfere with each other, the first non-polar liquid 300 can be controlled in size by the first electrode, and the second non-polar liquid 600 can be controlled in size by the second electrode. For example, a first polar liquid is arranged between the third conductive layer 800 and the first conductive layer 100, so as to control the size of the opening of the first non-polar liquid 300. A second polar liquid is arranged between the fourth conductive layer 910 and the second conductive layer 400, so as to control the size of the opening of the second non-polar liquid 600, the first polar liquid and the second polar liquid are isolated from each other, and the first polar liquid and the second polar liquid can be water.

[0044] It can be understood that other embodiments of the present application do not limit whether the electrowetting display is provided with the third conductive layer 800 and the fourth conductive layer 910. For example, the first non-polar liquid 300 and the second non-polar liquid 600 are both located between the first conductive layer 100 and the second conductive layer 400, the first pixel wall 200 and the second pixel wall 500 are both located between the first conductive layer 100 and the second conductive layer 400, the first pixel wall 200 extends from the first conductive layer 100 towards the second conductive layer 400 along the thickness direction of the electrowetting display, and the second pixel wall 500 extends from the second conductive layer 400 towards the first conductive layer 100.

[0045] In an embodiment, the electrowetting display further comprises a dielectric layer 900, the material of the dielectric layer 900 is conductive material. The dielectric layer 900 is arranged between the third conductive layer 800 and the first conductive layer 100, and between the fourth conductive layer 910 and the second conductive layer 400. The dielectric layer 900 is used for electrical conduction between the third conductive layer 800 and the first conductive layer 100, and between the fourth conductive layer 910 and the second conductive layer 400.

[0046] In an embodiment, the third conductive layer 800, the fourth conductive layer 910 and the first conductive layer 100 are made of transparent material, and light can pass through the third conductive layer 800, the fourth conductive layer 910 and the first conductive layer 100 to reach the second non-polar liquid 600 and the quantum dots 700. For example, the third conductive layer 800, the fourth conductive layer 910 and the first conductive layer 100 are made of ITO (Indium-Tin Oxide) glass, and the electrowetting display further comprises a hydrophobic insulating layer, the side of the second conductive layer 400 facing the first conductive layer 100 is provided with the hydrophobic insulating layer, and the side of the first conductive layer 100 facing the third conductive layer 800 is provided with the hydrophobic insulating layer. The electric field generated by the first conductive layer 100 and the second conductive layer 400 can act on the hydrophobic insulating layer, thereby changing the hydrophilicity of the hydrophobic insulating layer and controlling the movement of the non-polar liquid. The ITO conductive glass has good conductivity and transparency, and can be well adapted to the display device.

[0047] In an embodiment, the electrowetting display further comprises a controller configured to control the first electrode and the second electrode to adjust the electric field of the first conductive layer 100 and the second conductive layer 400, and the controller is configured to adjust the electric field of the first conductive layer 100 and the second conductive layer 400 respectively to control the opening of the first non-polar liquid 300 and the second non-polar liquid 600 respectively. By adjusting the opening of the first non-polar liquid 300 and the second non-polar liquid 600 respectively, the color of the color can be finely controlled. It should be noted that the opening of the non-polar liquid is related to the size of the current, but due to the characteristics of the material of the non-polar liquid, in the process of switching the non-polar liquid from the closed state to the open state, even if the current is linearly increased, the opening is nonlinearly changed. The opening of the non-polar liquid in the closed state is 0, and in the process of opening, the opening of the non-polar liquid is directly switched from 0 opening to 30% opening, and the non-polar liquid is difficult to control between 0 opening and 30% opening. By adjusting the first non-polar liquid 300 and the second non-polar liquid 600 respectively, the second non-polar liquid 600 can be controlled to be in a state of a smaller opening. For example, the opening of the first non-polar liquid 300 is 60%, and the opening of the second non-polar liquid 600 is 50%, the shielding part of the first non-polar liquid 300 is 40%, so the part exposed by the second non-polar liquid 600 is 10%, and in this state, the color reflected by the sub-pixel grid 200b is basically the same as the color with an opening of 10%. Further, by adjusting the opening of the first non-polar liquid 300 and the second non-polar liquid 600, the gray scale of the corresponding color can be adjusted. For example, the opening of the first non-polar liquid 300 is 50%, and the opening of the second non-polar liquid 600 is 40%, in this state, the color reflected by the sub-pixel grid 200b is still the color with an opening of 10%, but because the opening of the first non-polar liquid 300 is smaller than the opening of the first non-polar liquid 300 in the state of 60%, the gray scale of the color reflected in this state is larger.

[0048] In an embodiment, the material of the first pixel wall 200 is a material capable of reflecting light. The adjacent pixel grid 200a and sub-pixel grid 200b are separated by a pixel wall capable of reflecting light, and in the case that the external light source irradiates the pixel wall, the pixel wall can reflect the light into the pixel grid 200a, thereby improving the brightness of the corresponding pixel grid 200a.

[0049] It can be understood that other embodiments of the present application do not limit the material of the first pixel wall 200. For example, the material of the first pixel wall 200 can be a light-absorbing material.

[0050] In an embodiment, the size of the quantum dot 700 ranges from 2 nm to 20 nm. For example, the size of the quantum dot 700 is 2 nm, 4 nm, 6 nm, 8 nm, 10 nm, 12 nm, 14 nm, 16 nm, 18 nm, or 20 nm. The size of the quantum dot 700 is small, and the quantum dot 700 has small resistance in the ink, so that the Brownian motion can be more smoothly realized, the coffee ring effect is less likely to occur in the second non-polar liquid 600, and the quantum dot 700 is more uniformly distributed in the second non-polar liquid 600.

[0051] In an embodiment, the single pixel grid 200a includes at least one sub-pixel grid 200b, and the shape of the sub-pixel grid 200b is a square when projected along the thickness direction of the electrowetting display. The square sub-pixel grid 200b has good uniformity, and the sub-pixel grid 200b is symmetrical in the horizontal and vertical directions, which is convenient for image processing and display. In addition, the square pixel grid 200a has consistent resolution in the horizontal and vertical directions, and the distortion degree of the image scale is low.

[0052] It can be understood that other embodiments of the present application do not limit the shape of the sub-pixel grid 200b. For example, the shape of the projection area of the sub-pixel grid 200b is a rectangle, a hexagon, or a circle when projected along the thickness direction of the electrowetting display.

[0053] The above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that the technical solutions recorded in the foregoing embodiments can still be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application, and they should be covered in the scope of the specification of the present application. In particular, each technical feature mentioned in each embodiment can be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection.

Claims

1. An electrowetting display, characterized in that, The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device.

2. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device.

3. The electrowetting display of claim 2, wherein, The application relates to an electrowetting display device.

4. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device.

5. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device.

6. The electrowetting display of claim 5, wherein, The application relates to an electrowetting display device.

7. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device.

8. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device.

9. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device.

10. The electrowetting display of claim 1, wherein, The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application relates to an electrowetting display device. The application

Images