Display panel, manufacturing method thereof and display device

Abstract

The invention is suitable for the technical field of display equipment, and provides a display panel and a manufacturing method thereof and a display device.The display panel comprises a first substrate, a first electrode layer, an electrophoresis layer, a second electrode layer, a second substrate and a defining layer, the first substrate and the second substrate are oppositely arranged, and the defining layer is arranged between the first substrate and the second substrate; the first electrode layer is arranged on the side, facing the defining layer, of the first substrate, the second electrode layer is arranged on the side, facing the defining layer, of the second substrate, the defining layer defines a plurality of containing cavities with the extending direction inclined relative to the surface of the first substrate, and the electrophoresis layer is arranged in the containing cavities and comprises a plurality of electrophoresis particles. The electrophoretic particle comprises a charged inner core and a photoluminescence shell, and the photoluminescence shell is located outside the charged inner core. The display panel directly utilizes the irradiation of ambient light to display, and only consumes the electric energy for controlling the movement of the electrophoretic particles, so that the energy consumption is lower.

Description

Technical Field

[0001] This application belongs to the technical field of display devices, and particularly relates to a display panel, a manufacturing method thereof, and a display device. Background Art

[0002] With the continuous development of display technology, the forms of display devices are also changing rapidly. Among them, display devices are widely used in fields such as conference nameplates, e-reading, supermarket labels, and public transportation due to their simple manufacturing process and ultra-low power consumption.

[0003] Liquid crystal display devices and light-emitting diode display devices are relatively common display devices. Liquid crystal display devices need to light up the backlight for a long time, resulting in relatively high power consumption, especially in large-sized display devices. Although light-emitting diode display devices do not have a backlight, each light-emitting diode is an independent electrical appliance. As the size of the display device increases, the number of light-emitting diodes increases sharply, and the power consumption also increases continuously with the increase in the number of light-emitting diodes. It can be seen that current display devices, especially large-sized display devices, have the problem of relatively high power consumption. Summary of the Invention

[0004] In view of this, embodiments of this application provide a display panel, a manufacturing method thereof, and a display device, which are beneficial to reducing the power consumption of the display device.

[0005] A first aspect of embodiments of this application provides a display panel, including a first substrate, a first electrode layer, an electrophoresis layer, a second electrode layer, a second substrate, and a defining layer. The first substrate and the second substrate are disposed opposite to each other. The defining layer is disposed between the first substrate and the second substrate. The first electrode layer is disposed on a side of the first substrate facing the defining layer. The second electrode layer is disposed on a side of the second substrate facing the defining layer. The defining layer defines a plurality of receiving cavities whose extending direction is inclined relative to the surface of the first substrate. The electrophoresis layer is disposed in the receiving cavities. The electrophoresis layer includes a plurality of electrophoresis particles. The electrophoresis particles include a charged inner core and a photoluminescent outer shell. The photoluminescent outer shell is located outside the charged inner core.

[0006] In some examples, the photoluminescent outer shell includes a quantum dot coating.

[0007] In one embodiment, the defining layer includes a first defining portion disposed on the first substrate and a second defining portion disposed on the second substrate. A first surface protruding toward the second substrate is provided on a side of the first defining portion facing away from the first substrate. A second surface recessed toward the second substrate is provided on a side of the second defining portion facing away from the second substrate. The first surface and the second surface are disposed opposite to each other and at intervals to define the receiving cavity.

[0008] In one embodiment, along a direction parallel to the surface of the first substrate, pointing from one side of the defining layer to the other side thereof, the distance between the first surface and the first substrate gradually increases first and then gradually decreases, and the distance between the second surface and the first substrate gradually increases first and then gradually decreases.

[0009] In one embodiment, both the first surface and the second surface are spherical surfaces or ellipsoidal surfaces, and the center of the virtual sphere where the first surface is located coincides with the center of the virtual sphere where the second surface is located.

[0010] In one embodiment, the display panel further includes a black matrix disposed on the second substrate. Along a direction parallel to the surface of the second substrate, the black matrix is disposed around the outer periphery of the second defining portion.

[0011] In one embodiment, the orthographic projection of the black matrix on the surface of the first substrate at least partially coincides with the orthographic projection of the accommodating cavity on the surface of the first substrate; a groove is recessed on one side of the black matrix close to the accommodating cavity towards its interior, and the groove is used to accommodate at least some of the electrophoretic particles in the electrophoretic layer.

[0012] In one embodiment, the first electrode layer includes a plurality of sub-electrodes spaced apart from each other, and the sub-electrodes are at least partially disposed around the outer periphery of the first defining portion; the orthographic projection of the second electrode layer on the surface of the first substrate covers the orthographic projection of the sub-electrodes on the surface of the first substrate.

[0013] In one embodiment, the first defining portion is made of a light-absorbing material, and the second defining portion is made of a light-transmitting material; or the first defining portion is made of a light-transmitting material, and the second defining portion is made of a light-transmitting material.

[0014] A second aspect of the embodiments of the present application provides a manufacturing method of a display panel as described in the first aspect, including: forming a first electrode layer and a first defining portion of a defining layer on a first substrate; forming a second electrode layer and a second defining portion of the defining layer on a second substrate; disposing an electrophoretic layer in the first defining portion and / or the second defining portion, the electrophoretic layer including a plurality of electrophoretic particles, the electrophoretic particles including a charged core and a photoluminescent shell, and the photoluminescent shell is located outside the charged core; bonding the first substrate and the second substrate so that the electrophoretic layer is encapsulated in an accommodating cavity defined by the defining layer.

[0015] A third aspect of the embodiments of the present application provides a display device, including a driving circuit and a display panel as described in the first aspect, and the driving circuit is electrically connected to the display panel.

[0016] The display panel provided in the first aspect of the embodiments of the present application is configured such that the extending direction of the accommodation cavity defined by the defining layer is inclined relative to the surface of the first substrate. The electrophoresis layer includes a plurality of electrophoresis particles. Thus, when the electrophoresis layer disposed in the accommodation cavity moves and its position changes, it moves along the extending direction of the accommodation cavity, and the lateral and longitudinal positions of the electrophoresis particles relative to the first substrate change simultaneously. By adjusting the position of the electrophoresis particles in the accommodation cavity, the area covered by the electrophoresis particles within the accommodation cavity can be changed. The electrophoresis particles include a charged core and a photoluminescent shell. The photoluminescent shell is located outside the charged core. The charged core is used to enable the electrophoresis particles to move under the action of an electric field, and the photoluminescent shell emits light under the action of light irradiation, thereby achieving display. The larger the area covered by the electrophoresis particles in the accommodation cavity, the more electrophoresis particles are subjected to light irradiation, and the greater the brightness of the display panel, so that the display brightness of the display panel can be adjusted. Since the display panel directly uses the irradiation of ambient light for display and only consumes electrical energy for controlling the movement of the electrophoresis particles, the energy consumption is relatively low.

[0017] It can be understood that the beneficial effects of the above third aspect can be referred to the relevant descriptions in the above first and second aspects, and will not be elaborated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a schematic structural diagram of the display panel provided in Embodiment 1 of the present application;

[0020] Figure 2 It is a partially enlarged schematic structural diagram of the display panel provided in Embodiment 1 of the present application;

[0021] Figure 3 It is a schematic structural diagram of an electrophoresis particle provided in the embodiments of the present application;

[0022] Figure 4 It is a schematic structural diagram of the first substrate in the manufacturing process of the display panel provided in Embodiment 2 of the present application;

[0023] Figure 5 It is a schematic structural diagram of the second substrate in the manufacturing process of the display panel provided in Embodiment 2 of the present application;

[0024] Figure 6 It is a schematic structural diagram of the electrophoresis layer disposed in the manufacturing process of the display panel provided in Embodiment 2 of the present application;

[0025] Figure 7 It is a schematic structural diagram of a display panel manufactured by using the manufacturing method of the display panel provided in the second embodiment of the present application;

[0026] Figure 8 It is a flowchart of the manufacturing method of the display panel provided in the second embodiment of the present application;

[0027] Figure 9 It is a schematic structural diagram of a display device provided in the third embodiment of the present application.

[0028] Reference numerals in the drawings:

[0029] 10. Display panel;

[0030] 100. First substrate;

[0031] 200. First electrode layer, 210. Sub-electrode;

[0032] 300. Electrophoretic layer; 301. Charged core; 302. Photoluminescent shell;

[0033] 400. Second electrode layer;

[0034] 500. Second substrate;

[0035] 600. Defining layer, 610. First defining part, 611. First surface, 620. Second defining part, 621. Second surface, 630. Accommodating cavity;

[0036] 700. Black matrix, 710. Groove;

[0037] 20. Driving circuit. Detailed implementation manners

[0038] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0039] It should also be understood that the term "and / or" as used in the specification and claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0040] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0041] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application.

[0042] In addition, in the description of the specification and the appended claims of the present application, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and should not be construed as indicating or implying relative importance.

[0043] The reference to "one embodiment" or "some embodiments" etc. in the specification of the present application means that a specific feature, structure or characteristic described in connection with the embodiment is included in one or more embodiments of the present application. Thus, the statements "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "A plurality" means two or more.

[0044] Embodiment 1

[0045] See Figure 1 and Figure 2 As shown, the embodiment of the present application provides a display panel 10, which includes a first substrate 100, a first electrode layer 200, an electrophoretic layer 300, a second electrode layer 400, a second substrate 500, and a defining layer 600.

[0046] The first substrate 100 and the second substrate 500 are disposed opposite to each other. During manufacturing, sealant can be coated between the first substrate 100 and the second substrate 500, and silver paste can be dotted at the metal pads so that the first substrate 100 and the second substrate 500 are bonded and aligned, and the sealant is cured by ultraviolet light, and the silver paste is cured by heating.

[0047] It should be noted that the display panel 10 in the embodiments of the present application is a reflective display panel, which displays images by reflecting external ambient light. Therefore, in the display panel 10 of the embodiments of the present application, the second substrate 500 can serve as the light-emitting surface, and external ambient light can enter and exit from the second substrate 500. In other applications, the first substrate 100 can also be used as the light-emitting surface, which will not be elaborated here.

[0048] The defining layer 600 is disposed between the first substrate 100 and the second substrate 500. The defining layer 600 defines a plurality of accommodating cavities 630 whose extending directions are inclined relative to the surface of the first substrate 100. The plurality of accommodating cavities 630 defined by the defining layer 600 can be used to respectively dispose different electrophoresis layers 300, so as to form a plurality of pixel light-emitting units for respectively displaying different picture contents. The plurality of pixel light-emitting units can be arranged in an array. For example, they can be arranged in a grid in the row direction and the column direction to form a rectangular array arrangement, etc. The accommodating cavity 630 can be sealed by means of a retaining wall, and adjacent two accommodating cavities 630 can be blocked from each other by means of the retaining wall. The extending direction of the accommodating cavity 630 is inclined relative to the surface of the first substrate 100, that is, the included angle α between the extending direction of the accommodating cavity 630 and the surface of the first substrate 100 satisfies: 0 ≤ α < 90°.

[0049] It should be noted that at different positions of the accommodating cavity 630, the extending direction of the accommodating cavity 630 can remain unchanged, then the included angle α between the extending direction of the accommodating cavity 630 and the surface of the first substrate 100 also remains unchanged. At this time, the center line of the accommodating cavity 630 in the extending direction is an oblique line. In some other applications, at a certain place of the accommodating cavity 630, the extending direction of the accommodating cavity 630 changes, then the included angle α between the extending direction of the accommodating cavity 630 and the surface of the first substrate 100 also changes at that place. At this time, the center line of the accommodating cavity 630 in the extending direction is a broken line. In other applications, it can also be that the extending direction of the accommodating cavity 630 continuously changes and is different everywhere, then the included angle α between the extending direction of the accommodating cavity 630 and the surface of the first substrate 100 is also different everywhere. At this time, the center line of the accommodating cavity 630 in the extending direction is a curve.

[0050] The electrophoresis layer 300 is disposed in the accommodating cavity 630, and the electrophoresis layer 300 includes a plurality of electrophoresis particles. Figure 3 is a schematic structural diagram of an electrophoresis particle provided by an embodiment of the present application. As Figure 3 shown, the electrophoresis particle includes a charged inner core 301 and a photoluminescent outer shell 302, and the photoluminescent outer shell 302 is located outside the charged inner core 301.

[0051] In some examples, the electrophoretic particles at least include red electrophoretic particles, green electrophoretic particles, and blue electrophoretic particles to achieve different color display effects respectively. Among them, the photoluminescent shell 302 of the red electrophoretic particles emits red light under the action of light; the photoluminescent shell 302 of the green electrophoretic particles emits green light under the action of light; the photoluminescent shell 302 of the blue electrophoretic particles emits blue light under the action of light. The red electrophoretic particles, green electrophoretic particles, and blue electrophoretic particles are located in different accommodation cavities 630, and the electrophoretic particles in the same accommodation cavity 630 have the same color, that is, the same emission color under the action of light.

[0052] It can be understood that the height of the electrophoretic layer 300 filled in the accommodation cavity 630 is less than or equal to the height of the barrier wall to prevent the leakage of the electrophoretic layer 300. Moreover, the contents of the electrophoretic layer 300 and the electrophoretic particles filled in the accommodation cavities 630 at different depths can be the same or different, which can be specifically designed according to different embodiments and are not specifically limited herein.

[0053] The first electrode layer 200 is disposed on one side of the first substrate 100 facing the delimiting layer 600, and the second electrode layer 400 is disposed on one side of the second substrate 500 facing the delimiting layer 600. The first electrode layer 200 and the second electrode layer 400 can be formed on the first substrate 100 and the second substrate 500 by means of coating, exposure, development, etc. using materials such as indium tin oxide (ITO). One of the first electrode layer 200 and the second electrode layer 400 is connected to positive electricity, and the other of the first electrode layer 200 and the second electrode layer 400 is connected to negative electricity. In this way, an electric field can be formed between the first electrode layer 200 and the second electrode layer 400, and the electrophoretic particles can move under the action of the electric field between the first electrode layer 200 and the second electrode layer 400. By changing the size of the coverage area of the electrophoretic particles in the accommodation cavity 630, the display content of the pixel light-emitting unit can be changed.

[0054] In the embodiment of the present application, the display panel 10 is provided such that the extending direction of the accommodating cavity 630 defined by the defining layer 600 is inclined relative to the surface of the first substrate 100. The electrophoretic layer 300 includes a plurality of electrophoretic particles. Thus, when the electrophoretic layer 300 disposed in the accommodating cavity 630 moves and changes its position within the accommodating cavity 630, it moves along the extending direction of the accommodating cavity 630, and the lateral and longitudinal positions of the electrophoretic particles relative to the first substrate 100 change simultaneously. By adjusting the position of the electrophoretic particles within the accommodating cavity 630, the size of the area covered by the electrophoretic particles within the accommodating cavity 630 can be changed. The electrophoretic particles include a charged core 301 and a photoluminescent shell 302. The photoluminescent shell 302 is located outside the charged core 301. The charged core 301 is used to enable the electrophoretic particles to move under the action of an electric field, and the photoluminescent shell 302 emits light under the action of light, thereby performing display. The larger the area covered by the electrophoretic particles within the accommodating cavity 630, the more electrophoretic particles are affected by the light, and the greater the brightness of the display panel. Thus, the display brightness of the display panel 10 can be adjusted. Since the display panel directly uses the illumination of ambient light for display and only consumes the electric energy for controlling the movement of the electrophoretic particles, the energy consumption is relatively low.

[0055] As an example, the charged core 301 can be positively charged titanium dioxide particles. Titanium dioxide particles have stable properties and a long service life.

[0056] In some examples, the photoluminescent shell 302 can include a quantum dot coating. The photoluminescent shell 302 of the red electrophoretic particles can include a red quantum dot coating; the photoluminescent shell 302 of the green electrophoretic particles can include a green quantum dot coating; the photoluminescent shell 302 of the blue electrophoretic particles can include a blue quantum dot coating. The quantum dot coating is a coating containing quantum dot materials. Quantum dot materials can emit visible light under illumination conditions, and different quantum dot materials emit different visible lights under the same illumination conditions. Emitting light through the quantum dot coating is beneficial to improving the display color gamut of the display panel, and the display effect is better.

[0057] The defining layer 600 is disposed between the first substrate 100 and the second substrate 500. The defining layer 600 defines a plurality of receiving cavities 630 whose extending directions are inclined relative to the surface of the first substrate 100. Specifically, in application, the defining layer 600 may include a first defining portion 610 disposed on the first substrate 100 and a second defining portion 620 disposed on the second substrate 500. A first surface 611 protruding toward the second substrate 500 is provided on the side of the first defining portion 610 facing away from the first substrate 100; a second surface 621 recessed toward the first substrate 100 is provided on the side of the second defining portion 620 facing away from the second substrate 500; the first surface 611 and the second surface 621 face each other and are spaced apart to define the receiving cavity 630. When both the first surface 611 and the second surface 621 are flat surfaces, the extending direction of the receiving cavity 630 remains unchanged, and the angle α between the extending direction of the receiving cavity 630 and the surface of the first substrate 100 also remains unchanged. At this time, the center line of the receiving cavity 630 in the extending direction is an oblique line. When the first surface 611 and the second surface 621 respectively include two or more intersecting flat surfaces, at a certain place of the receiving cavity 630, the extending direction of the receiving cavity 630 changes, and the angle α between the extending direction of the receiving cavity 630 and the surface of the first substrate 100 also changes at this place. At this time, the center line of the receiving cavity 630 in the extending direction is a broken line. When the first surface 611 and the second surface 621 respectively include one or more curved surfaces, the extending direction of the receiving cavity 630 changes continuously and is different everywhere, and the angle α between the extending direction of the receiving cavity 630 and the surface of the first substrate 100 is also different everywhere. At this time, the center line of the receiving cavity 630 in the extending direction is a curve. In order to enable the display panel 10 to achieve normal display, the second defining portion 620 is made of a light-transmitting material, such as polyimide, so as not to block the transmission of light. The first defining portion 610 may be made of a light-absorbing material, such as black resin.

[0058] Such as Figure 2As shown, in the application, along the direction parallel to the surface of the first substrate 100, pointing from one side of the defining layer 600 to the other side, the distance between the first surface 611 of the first defining portion 610 and the first substrate 100 first gradually increases and then gradually decreases, and the distance between the second surface 621 of the second defining portion 620 and the first substrate 100 first gradually increases and then gradually decreases. That is to say, at this time, the accommodation cavity 630, the first surface 611, and the second surface 621 are all centrosymmetric figures. At the surrounding positions away from the symmetry center in the accommodation cavity 630, the distance between the accommodation cavity 630 and the first substrate 100 is relatively close, and the distance from the second substrate 500 is relatively far. Subsequently, along the direction parallel to the surface of the first substrate 100, the closer the position in the accommodation cavity 630 is to its symmetry center, the farther the distance between the accommodation cavity 630 and the first substrate 100, and the closer the distance from the second substrate 500. At the position of the symmetry center in the accommodation cavity 630, the distance between the accommodation cavity 630 and the first substrate 100 is relatively the farthest, and the distance from the second substrate 500 is relatively the closest. Therefore, when the electrophoresis particles in the electrophoresis layer 300 located in the accommodation cavity 630 move in the accommodation cavity 630, when the electrophoresis particles are at the surrounding positions away from the symmetry center in the accommodation cavity 630, the distance between the electrophoresis particles and the first substrate 100 is relatively close, and the distance from the second substrate 500 is relatively far. Subsequently, along the direction parallel to the surface of the first substrate 100, the closer the position of the electrophoresis particles in the accommodation cavity 630 is to its symmetry center, the farther the distance between the electrophoresis particles and the first substrate 100, and the closer the distance from the second substrate 500. When the electrophoresis particles are at the symmetry center position in the accommodation cavity 630, the distance between the electrophoresis particles and the first substrate 100 is relatively the farthest, and the distance from the second substrate 500 is relatively the closest.

[0059] In the application, further, both the first surface 611 and the second surface 621 are spherical surfaces or ellipsoidal surfaces, and the center of the virtual sphere where the first surface 611 is located coincides with the center of the virtual sphere where the second surface 621 is located. When the center of the virtual sphere where the first surface 611 is located coincides with the center of the virtual sphere where the second surface 621 is located, but the radius of the virtual sphere where the first surface 611 is located is not equal to the radius of the virtual sphere where the second surface 621 is located, at this time, the first surface 611 and the second surface 621 can be opposite to each other and arranged at intervals. At this time, along the extending direction of the accommodation cavity 630, the height dimension of the accommodation cavity 630 defined by the first surface 611 and the second surface 621 is equal everywhere.

[0060] The accommodating cavity 630 can be sealed by means of a retaining wall, and adjacent accommodating cavities 630 can be separated from each other by means of the retaining wall. In application, the display panel 10 further includes a black matrix 700 disposed on the second substrate 500. Along the direction parallel to the surface of the second substrate 500, the black matrix 700 is disposed around the outer periphery of the second defining portion 620. That is, the black matrix 700 can be used as the retaining wall. In application, the black matrix can be formed by at least one black photoresist material such as chromium (Cr), nickel (Ni), tungsten (W), etc.

[0061] As Figure 1 shown, in application, the orthographic projection of the black matrix 700 on the surface of the first substrate 100 at least partially coincides with the orthographic projection of the accommodating cavity 630 on the surface of the first substrate 100; a groove 710 is recessed inwardly on one side of the black matrix 700 close to the accommodating cavity 630, and the groove 710 is used to accommodate at least part of the electrophoretic particles in the electrophoretic layer 300. The shape, the recessed size, etc. of the groove 710 are set according to the usage requirements and are not limited here. By providing the groove 710 recessed inwardly on one side of the black matrix 700 close to the accommodating cavity 630, since the orthographic projection of the black matrix 700 on the surface of the first substrate 100 at least partially coincides with the orthographic projection of the accommodating cavity 630 on the surface of the first substrate 100, when the electrophoretic particles are located at the peripheral positions away from the symmetry center in the accommodating cavity 630, this part of the electrophoretic particles also enters the groove 710 on the black matrix 700 at the same time, and thus is blocked by the black matrix 700 and cannot be observed, achieving a visual hiding effect on this part of the electrophoretic particles.

[0062] The electrophoretic particles can move under the action of the electric field between the first electrode layer 200 and the second electrode layer 400, changing their positions in the accommodation cavity 630. In an application, the first electrode layer 200 includes a plurality of sub-electrodes 210 arranged at intervals from each other, and the sub-electrodes 210 at least partially surround the outer periphery of the first defining portion 610; the positive projection of the second electrode layer 400 on the surface of the first substrate 100 covers the positive projection of the sub-electrodes 210 on the surface of the first substrate 100. Thus, when no voltage is applied to the sub-electrodes 210, the charged electrophoretic particles are dispersed in the accommodation cavity 630 of the spherical cavity, completely covering the unit surface of the first defining portion 610, so that the light incident from the outside into the cavity can be completely converted and reflected, having the highest color display brightness. When the sub-electrodes 210 are applied with a negative high voltage, the charged electrophoretic particles are completely aggregated to the periphery of the unit of the first defining portion 610 under the action of the electric field and are hidden in the groove 710 under the black matrix 700, then the light incident from the outside into the cavity reaches the first defining portion 610 and is completely absorbed by the light-absorbing first defining portion 610, having the lowest color display brightness. When the sub-electrodes 210 are applied with a negative low voltage, the charged electrophoretic particles partially cover the unit surface of the first defining portion 610 under the action of the electric field, then only part of the light incident from the outside into the cavity is converted and reflected by the electrophoretic particles, and the light incident on the unit position of the first defining portion 610 is completely absorbed, having an intermediate color display brightness.

[0063] Embodiment 2

[0064] Different from the solution of Embodiment 1, in this embodiment, both the first defining portion 610 and the second defining portion 620 in the defining layer 600 are made of a light-transmitting material, such as polyimide, without affecting the transmission of light. Since both the first defining portion 610 and the second defining portion 620 can transmit light, the display panel can achieve double-sided display, that is, the displayed picture can be observed from both sides of the display panel.

[0065] In this embodiment, when no voltage is applied to the sub-electrode 210, the charged electrophoretic particles are dispersed in the accommodation cavity 630 of the spherical cavity, completely covering the unit surface of the first defining portion 610, so that the light incident from the outside into the cavity can be completely converted and reflected, and the highest color display brightness can be obtained. When the sub-electrode 210 is applied with a negative high voltage, the charged electrophoretic particles are completely aggregated to the periphery of the unit of the first defining portion 610 under the action of the electric field and hidden in the groove 710 under the black matrix 700. Then, the light incident from the outside into the cavity reaches the first defining portion 610, passes through the light-transmitting first defining portion 610, and has the lowest color display brightness. When the sub-electrode 210 is applied with a negative low voltage, the charged electrophoretic particles partially cover the unit surface of the first defining portion 610 under the action of the electric field. Then, only part of the light incident from the outside into the cavity is converted and reflected by the electrophoretic particles, and the light incident on the unit position of the first defining portion 610 is completely transmitted through the first defining portion 610, having an intermediate color display brightness.

[0066] Embodiment III

[0067] Please refer to Figures 4 to 8 As shown, the second aspect of the embodiment of the present application provides a manufacturing method of a display panel 10, including the following steps:

[0068] S102. Form the first electrode layer 200 and the first defining portion 610 of the defining layer 600 on the first substrate 100.

[0069] S104. Form the second electrode layer 400 and the second defining portion 620 of the defining layer 600 on the second substrate 500.

[0070] S106. Dispose the electrophoretic layer 300 in the first defining portion 610 and / or the second defining portion 620.

[0071] Wherein, the electrophoretic layer 300 includes a plurality of electrophoretic particles, and the electrophoretic particles include a charged core 301 and a photoluminescent shell 302, and the photoluminescent shell 302 is located outside the charged core 301.

[0072] S108. Bond the first substrate 100 and the second substrate 500 so that the electrophoretic layer 300 is encapsulated in the accommodation cavity 630 defined by the defining layer 600.

[0073] In step S106, the electrophoretic layer 300 can be disposed in the first defining portion 610, or can be disposed in the second defining portion 620, or can be disposed in both the first defining portion 610 and the second defining portion 620 at the same time. Here, the case where the electrophoretic layer 300 is disposed only in the second defining portion 620 is described.

[0074] The display panel 10 manufactured by using the manufacturing method of the display panel 10 provided in the embodiment of the present application is configured such that the extending direction of the accommodation cavity 630 defined by the defining layer 600 is inclined relative to the surface of the first substrate 100. Thus, when the electrophoresis layer 300 disposed in the accommodation cavity 630 moves and its position changes, it moves along the extending direction of the accommodation cavity 630, and the lateral and longitudinal positions of the electrophoresis particles in the electrophoresis layer 300 change simultaneously relative to the first substrate 100. By adjusting the position of the electrophoresis particles in the accommodation cavity 630, the area of the accommodation cavity 630 covered by the electrophoresis particles can be changed. The electrophoresis particles include a charged inner core 301 and a photoluminescent outer shell 302. The photoluminescent outer shell 302 is located outside the charged inner core 301. The charged inner core 301 is used to enable the electrophoresis particles to move under the action of an electric field, and the photoluminescent outer shell 302 emits light under the action of light irradiation, thereby performing display. The larger the area covered by the electrophoresis particles in the accommodation cavity 630, the more electrophoresis particles are subjected to light irradiation, and the greater the brightness of the display panel. Thus, the display brightness of the display panel 10 can be adjusted. Since the display panel directly uses the ambient light irradiation for display and only consumes the electric energy for controlling the movement of the electrophoresis particles, the energy consumption is low.

[0075] Embodiment 4

[0076] As Figure 9 shown, the embodiment of the present application provides a display device. The display device includes a driving circuit 20 and the display panel 10 as in Embodiment 1 or Embodiment 2. The driving circuit 20 is electrically connected to the display panel 10. The driving circuit 20 can change the voltage magnitudes of the first electrode layer 200 and the second electrode layer 400, and further control the positions of the electrophoresis particles in the electrophoresis layer 300, so as to achieve the effect of controlling the display screen, that is, the driving circuit 20 can drive the display panel 10 to display a screen.

[0077] In the display device provided by the embodiment of the present application, the extending direction of the accommodation cavity 630 defined by the defining layer 600 is set to be inclined relative to the surface of the first substrate 100. Thus, when the electrophoresis layer 300 disposed in the accommodation cavity 630 moves and its position changes, it moves along the extending direction of the accommodation cavity 630. The lateral and longitudinal positions of the electrophoresis particles in the electrophoresis layer 300 change simultaneously relative to the first substrate 100. By adjusting the position of the electrophoresis particles in the accommodation cavity 630, the area covered by the electrophoresis particles in the accommodation cavity 630 can be changed. The electrophoresis particles include a charged core 301 and a photoluminescent shell 302. The photoluminescent shell 302 is located outside the charged core 301. The charged core 301 is used to enable the electrophoresis particles to move under the action of an electric field. The photoluminescent shell 302 emits light under the action of light, thereby performing display. The larger the area covered by the electrophoresis particles in the accommodation cavity 630, the more electrophoresis particles are affected by light, and the greater the brightness of the display panel. Thus, the display brightness of the display panel 10 can be adjusted. Since the display panel directly uses the illumination of ambient light for display and only consumes the electric energy for controlling the movement of the electrophoresis particles, the energy consumption is low.

[0078] In the above embodiments, the descriptions of the respective embodiments have their own emphases. For parts not detailed or recorded in a certain embodiment, reference may be made to the relevant descriptions of other embodiments.

[0079] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacement on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the respective embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A display panel, characterized in that: The invention comprises a first substrate (100), a first electrode layer (200), an electrophoretic layer (300), a second electrode layer (400), a second substrate (500) and a defining layer (600), wherein the first substrate (100) and the second substrate (500) are arranged opposite to each other, the defining layer (600) is arranged between the first substrate (100) and the second substrate (500), the first electrode layer (200) is arranged on a side of the first substrate (100) facing the defining layer (600), and the second electrode layer (400) is arranged on a side of the first substrate (100) facing the defining layer (600). 00) is arranged on the side of the second substrate (500) facing the defining layer (600), the defining layer (600) defines a plurality of accommodating cavities (630) whose extension direction is inclined relative to the surface of the first substrate (100), the electrophoretic layer (300) is arranged in the accommodating cavity (630), the electrophoretic layer (300) includes a plurality of electrophoretic particles, the electrophoretic particles include a charged core (301) and a photoluminescent shell (302), and the photoluminescent shell (302) is located outside the charged core (301).

2. The display panel according to claim 1, wherein: The photoluminescent housing (302) includes a quantum dot coating.

3. The display panel according to claim 1 or 2, characterized in that: The defining layer (600) comprises a first defining portion (610) provided on the first substrate (100) and a second defining portion (620) provided on the second substrate (500); A first surface (611) protruding toward the second substrate (500) is provided on a side of the first defining portion (610) facing away from the first substrate (100); A second surface (621) recessed toward the second substrate (500) is provided on a side of the second defining portion (620) facing away from the second substrate (500); The first surface (611) and the second surface (621) are opposite to each other and are spaced apart to define the accommodating cavity (630).

4. The display panel according to claim 3, wherein: Along a direction parallel to the surface of the first substrate (100), from one side of the defining layer (600) to the other side thereof, the distance between the first surface (611) and the first substrate (100) first gradually increases and then gradually decreases, and the distance between the second surface (621) and the first substrate (100) first gradually increases and then gradually decreases.

5. The display panel according to claim 4, wherein: The first surface (611) and the second surface (621) are both spherical surfaces or ellipsoidal surfaces, and the center of the virtual sphere where the first surface (611) is located coincides with the center of the virtual sphere where the second surface (621) is located.

6. The display panel according to claim 3, wherein: The display panel (10) further comprises a black matrix (700) disposed on the second substrate (500); along a direction parallel to the surface of the second substrate (500), the black matrix (700) surrounds the outer periphery of the second defining portion (620).

7. The display panel according to claim 6, wherein: The orthographic projection of the black matrix (700) on the surface of the first substrate (100) at least partially overlaps with the orthographic projection of the accommodating cavity (630) on the surface of the first substrate (100); A groove (710) is provided on one side of the black matrix (700) close to the accommodating cavity (630) and is recessed into the interior thereof. The groove (710) is used to accommodate at least part of the electrophoretic particles in the electrophoretic layer (300).

8. The display panel according to claim 3, wherein: The first defining portion (610) is made of a light-absorbing material, and the second defining portion (620) is made of a light-transmitting material; or The first defining portion (610) is made of a light-transmitting material, and the second defining portion (620) is made of a light-transmitting material.

9. A method for manufacturing a display panel according to any one of claims 1 to 8, characterized in that: include: Forming a first electrode layer (200) and a first defining portion (610) of a defining layer (600) on a first substrate (100); forming a second electrode layer (400) and a second defining portion (620) of the defining layer (600) on a second substrate (500); An electrophoretic layer (300) is arranged in the first defining portion (610) and / or the second defining portion (620), wherein the electrophoretic layer (300) comprises a plurality of electrophoretic particles, wherein the electrophoretic particles comprise a charged core (301) and a photoluminescent shell (302), wherein the photoluminescent shell (302) is located outside the charged core (301); The first substrate (100) and the second substrate (500) are joined so that the electrophoretic layer (300) is encapsulated in the accommodating cavity (630) defined by the defining layer (600).

10. A display device, characterized in that: It comprises a driving circuit (20) and a display panel (10) according to any one of claims 1 to 8, wherein the driving circuit (20) is electrically connected to the display panel (10).

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