Electrochromic device and electronic equipment

Abstract

The invention discloses an electrochromic device and electronic equipment. The electrochromic device comprises two parallel and opposite electrode layers, the electrochromic functional layer is positioned between the electrode layers; the electrode layer is internally provided with at least two main segmentation gaps, and the electrode layer is segmented into a plurality of independent electrode blocks by the main segmentation gaps; the main segmentation gaps in the two electrode layers are in mirror symmetry; a plurality of parallel auxiliary segmentation gaps are formed in the electrode blocks, and the electrode blocks are segmented into a plurality of sub-electrodes by the auxiliary segmentation gaps; one end of the auxiliary segmentation gap is cut off at one main segmentation gap adjacent to the electrode block, and the other end is cut off at the edge of the electrode layer included in the electrode block; the direction perpendicular to the plane where the electrode layer is located is the first direction. For the two electrode blocks which are vertically opposite in the first direction, the auxiliary segmentation gaps in the two electrode blocks intersect in different planes, so that the electrochromic device is divided into a plurality of pixels. According to the invention, the dynamic display of real-time transformation can be realized, and the uniformity and response speed of electrochromism are improved.

Description

Technical Field

[0001] The present application relates to the technical field of electrochromic technology, and more specifically, to an electrochromic device and an electronic device. Background Art

[0002] Electrochromism (EC) refers to the phenomenon that the optical properties of materials (transmittance, reflectivity, absorptivity, etc.) undergo stable and reversible changes under the stimulation of external voltage or current, which is manifested in the reversible changes of color and transparency. Displays made of electrochromic devices have a wide viewing angle and a clear display, which is better than liquid crystal displays. They also have storage performance and can maintain the display state after power failure. In addition, the operating voltage of electrochromic displays is low, which is very compatible with integrated circuits.

[0003] The display area and display pattern of existing electrochromic display devices are monotonous and cannot be dynamically changed in real time as needed, which greatly restricts the development of electrochromic technology in the display field. Summary of the invention

[0004] In view of this, the present application provides an electrochromic device and an electronic device, and the scheme is as follows:

[0005] An electrochromic device, comprising:

[0006] Two parallel and opposite electrode layers;

[0007] An electrochromic functional layer located between the electrode layers;

[0008] There are at least two main dividing gaps in the electrode layer, and the main dividing gaps divide the electrode layer into a plurality of independent electrode blocks; the main dividing gaps in the two electrode layers are mirror-symmetrical;

[0009] The electrode block has a plurality of parallel sub-dividing gaps, which divide the electrode block into a plurality of sub-electrodes; one end of the sub-dividing gap ends at a main dividing gap adjacent to the electrode block, and the other end ends at an edge of an electrode layer included in the electrode block;

[0010] The direction perpendicular to the plane where the electrode layer is located is the first direction; for two electrode blocks vertically opposite to each other in the first direction, the sub-division gaps in the two electrode blocks intersect with each other in different planes to divide the electrochromic device into multiple pixels.

[0011] Preferably, in the above electrochromic device, for two electrode blocks vertically opposite to each other in the first direction, the electrode lines connected to the sub-electrodes are led out from the edges of the electrode layers included in the electrode blocks.

[0012] Preferably, in the above electrochromic device, the electrode blocks are respectively connected to independent control units.

[0013] Preferably, in the above electrochromic device, for two electrode blocks vertically opposite to each other in the first direction, the angle range of the skew-intersecting secondary division gaps in the two electrode blocks is any angle between 0° and 180°.

[0014] Preferably, in the above electrochromic device, the width of the main dividing gap is 0.05 μm-5000 μm;

[0015] And / or, the width of the sub-main dividing gap is 0.05 μm-5000 μm.

[0016] Preferably, in the above electrochromic device, the width of the main dividing gap is 20 μm-200 μm;

[0017] The width of the sub-main dividing gap is 20 μm-200 μm.

[0018] Preferably, in the above electrochromic device, for two electrode blocks vertically opposite to each other in the first direction, the width of the sub-electrode in one electrode block is the same as the width of the sub-electrode in the other electrode block.

[0019] Preferably, in the above electrochromic device, the electrode layer is a regular N-gon; N is a positive integer greater than 2;

[0020] The electrode layer has N main dividing gaps in it, one end of the main dividing gap ends at the center of the regular N-gon, and the other end ends at a vertex of the regular N-gon.

[0021] Preferably, in the above electrochromic device, the electrode layer is circular;

[0022] One end of the main dividing gap ends at the center of the circle, and the other end ends at the edge of the circle, forming a fan-shaped electrode block.

[0023] Preferably, in the above electrochromic device, the fan-shaped electrode blocks have the same shape.

[0024] The present application also provides an electronic device, comprising any of the above-mentioned electrochromic devices.

[0025] It can be known from the above description that in the electrochromic device and electronic device provided by the technical solution of the present application, the electrode layer of the electrochromic device is divided into a plurality of independent electrode blocks based on the main dividing gap, and the electrode block is divided into a plurality of sub-electrodes based on the secondary dividing gap, so based on the sub-electrodes, the electrochromic state of each pixel can be controlled, thereby realizing a dynamic display of real-time transformation. Secondly, based on the layout design of the secondary dividing gap in the electrode block, the electrode lines of the two electrode blocks relative to each other in the first direction can be led out from the same side, which greatly reduces the packaging difficulty of the device. In addition, since the electrode layer is first divided into a plurality of independent electrode blocks based on the main dividing gap, and then the electrode block is divided into a plurality of sub-electrodes based on the secondary dividing gap, the length of the sub-electrodes used to form the pixel is reduced, thereby shortening the current path, and improving the uniformity and response speed of the electrochromic. Finally, multiple independent electrode blocks can be scanned and driven simultaneously by multiple control units to synchronously perform electrochromic control, which can greatly improve the scanning efficiency compared to the method of using the same control unit for an entire electrode block. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the related technologies, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0027] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which this application can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by this application, should still fall within the scope of the technical contents disclosed in this application.

[0028] Figure 1 A schematic diagram of an electrode pattern of a first electrode layer in a conventional electrochromic device;

[0029] Figure 2 A schematic diagram of an electrode pattern of a second electrode layer in a conventional electrochromic device;

[0030] Figure 3 for Figure 1 and Figure 2 The schematic diagram of the principle of dividing the electrode pattern to form pixels;

[0031] Figure 4 A cross-sectional view of an electrochromic device provided in an embodiment of the present application;

[0032] Figure 5 for Figure 4 The schematic diagram of the principle of dividing the electrode layer in the electrochromic device into multiple independent electrode blocks;

[0033] Figure 6 for Figure 4 A top view of an electrode layer in the electrochromic device shown;

[0034] Figure 7 for Figure 4 A top view of another electrode layer in the electrochromic device;

[0035] Figure 8 for Figure 4 The schematic diagram of the principle of dividing the electrode patterns of two electrode layers in the electrochromic device to form pixels;

[0036] Fig. 9 A cross-sectional view of another electrochromic device provided in an embodiment of the present application;

[0037] Fig.10 A cross-sectional view of another electrochromic device provided in an embodiment of the present application;

[0038] Fig.11 A cross-sectional view of another electrochromic device provided in an embodiment of the present application;

[0039] Fig.12 for Figure 4 The schematic diagram of the principle of connecting the sub-electrodes to the electrode wires in the electrochromic device shown;

[0040] Fig.13 A control circuit diagram of an electrochromic device provided in an embodiment of the present application;

[0041] Fig.14 A schematic diagram of the segmentation principle of a triangular electrode layer provided in an embodiment of the present application;

[0042] Fig.15 A schematic diagram of the segmentation principle of a regular pentagonal electrode layer provided in an embodiment of the present application;

[0043] Fig.16 A schematic diagram of the segmentation principle of a regular hexagonal electrode layer provided in an embodiment of the present application;

[0044] Fig.17 A schematic diagram of the segmentation principle of a circular electrode layer provided in an embodiment of the present application;

[0045] Fig.18 A schematic diagram of the principle of dividing an electrode layer based on a curved dividing gap provided in an embodiment of the present application. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the embodiments in the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0047] It is obvious to those skilled in the art that various modifications and changes can be made in the present application without departing from the spirit or scope of the present application. Therefore, the present application is intended to cover modifications and changes of the present application that fall within the scope of the corresponding claims (technical solutions for protection) and their equivalents. It should be noted that the implementation methods provided in the embodiments of the present application can be combined with each other without contradiction.

[0048] As described in the background technology, the display area and display pattern of existing electrochromic display devices are monotonous and cannot be dynamically changed in real time as needed, which greatly restricts the development of electrochromic technology in the display field. In order to solve the above problems, one implementation method can be as follows Figure 1-Figure 3 shown.

[0049] refer to Figure 1-Figure 3 As shown, Figure 1 This is a schematic diagram of the electrode pattern of the first electrode layer in a conventional electrochromic device. Figure 2 This is a schematic diagram of the electrode pattern of the second electrode layer in a conventional electrochromic device. Figure 3 for Figure 1 and Figure 2 The schematic diagram of the principle of dividing the electrode pattern to form pixels is shown. Figure 1-Figure 3 In the illustrated embodiment, the electrochromic device includes: a first electrode layer and a second electrode layer arranged opposite to each other, and an electrochromic layer located between the first electrode layer and the second electrode layer. The first electrode layer is divided into a plurality of first electrodes arranged in sequence in the horizontal direction, and the second electrode layer is divided into a plurality of second electrodes arranged in sequence in the vertical direction. The first electrode and the second electrode cross each other in different planes, dividing the electrochromic device into a plurality of pixels.

[0050] Figure 1-Figure 3In the illustrated method, the first electrode layer has the first electrode A to the first electrode J, and the second electrode layer has the second electrode 1 to the second electrode 10. By controlling the working voltage of the first electrode and the second electrode, the electrochromic state of the pixel can be controlled, thereby realizing a dynamic display of real-time transformation. For example, based on the control voltage of the first electrode D and the second electrode 2, the electrochromic state of the pixel 17 can be controlled; based on the control voltage of the first electrode E and the second electrode 4, the electrochromic state of the pixel 18 can be controlled; based on the control voltage of the first electrode F and the second electrode 6, the electrochromic state of the pixel 19 can be controlled.

[0051] Figure 1-Figure 3 In the method shown, although the electrochromic state of the corresponding pixel can be controlled based on the working voltage of the first electrode and the second electrode, there are still many problems in this method. First, this method adopts a structure similar to a passive matrix organic electroluminescent diode (PMOLED), and the electrode lines of the first electrode and the second electrode need to be led out from different sides of the electrode layer respectively, such as the first electrode needs to be connected to the electrode line from one side in the longitudinal direction, and the second electrode needs to be connected to the electrode line from one side in the transverse direction, which increases the difficulty of wiring packaging. Secondly, corresponding to large-size and high-resolution electrochromic devices, as the number of pixel segmentation increases, in the multi-pixel dynamic display process, the conventional PMOLED structure device uses a single control unit to control the electrochromic state of all pixels, and a delayed afterimage phenomenon will occur, which greatly affects the refresh rate. Moreover, as the size of the device increases, the length of the electrode is larger, the current path is larger when the electrode is powered, the voltage drop on the electrode is larger, and the area close to the current input end and the area far from the current input end have a large display difference, which affects the uniformity and response speed of the electrochromic.

[0052] In view of this, an embodiment of the present application provides an electrochromic device and an electronic device, which divides the electrode layer based on a main dividing gap and a sub-dividing gap. The electrode layer is first divided into multiple independent electrode blocks through a main dividing gap extending in a direction passing through the center of the electrode layer, and then the electrode block is divided into multiple sub-electrodes through a sub-dividing gap extending in a direction not passing through the center of the electrode layer, and the electrode lines are located on the same side.

[0053] Through the layout design of the main dividing gap and the sub-dividing gap in the electrode layer, the electrode lines of the sub-electrodes in the two electrode blocks opposite to each other in the first direction can be located on the same side, which is convenient for packaging the device; the control units can also be connected to different electrode blocks respectively to improve the refresh efficiency; and the division method of multiple electrode blocks reduces the length of the sub-electrode, thereby shortening the current path of the sub-electrode and improving the uniformity and response speed of electrochromism; each pixel can control coloring and fading individually, and can display any image according to display requirements to achieve a dynamic display effect.

[0054] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0055] refer to Figure 4-Figure 8 As shown, Figure 4 A cross-sectional view of an electrochromic device provided in an embodiment of the present application, Figure 5 for Figure 4 The schematic diagram of the principle of dividing the electrode layer in the electrochromic device into multiple independent electrode blocks is shown. Figure 6 for Figure 4 A top view of an electrode layer in the electrochromic device shown, Figure 7 for Figure 4 A top view of another electrode layer in the electrochromic device shown, Figure 8 for Figure 4 The schematic diagram of the principle of dividing the electrode patterns of the two electrode layers in the electrochromic device to form pixels is shown, wherein: Figure 4 for Figure 6 The cross-sectional view on a straight line where the main dividing gap 23 is located shows that the electrochromic device includes:

[0056] Two parallel and opposite electrode layers 21;

[0057] An electrochromic functional layer 22 located between the electrode layers 21;

[0058] The electrode layer 21 has at least two main dividing gaps 23, and the main dividing gaps 23 divide the electrode layer 21 into a plurality of independent electrode blocks 24; the main dividing gaps 23 in the two electrode layers 21 are mirror-symmetrical;

[0059] The electrode block 24 has a plurality of parallel sub-dividing gaps 25, which divide the electrode block 24 into a plurality of sub-electrodes 241; one end of the sub-dividing gap 25 terminates at a main dividing gap 23 adjacent to the electrode block 24, and the other end terminates at an edge of the electrode layer included in the electrode block 24;

[0060] The direction perpendicular to the plane where the electrode layer 21 is located is the first direction. For two electrode blocks 24 vertically opposite to each other in the first direction, the secondary dividing gaps 25 in the two electrode blocks 24 intersect with each other in different planes to divide the electrochromic device into a plurality of pixels 26 .

[0061] Since the main dividing gaps 23 in the two electrode layers 21 are mirror-symmetrical, in the first direction, the main dividing gaps 23 in the two electrode layers 21 are vertically opposite to each other, so that the main dividing gaps 23 in the two electrode layers 21 completely overlap, so that the electrode blocks 24 in one electrode layer 21 are arranged one by one opposite to the electrode blocks 24 in the other electrode layer 21.

[0062] The electrode layer 21 of the electrochromic device is divided into a plurality of independent electrode blocks 24 based on the main dividing gap 23, and the electrode block 24 is divided into a plurality of sub-electrodes 241 based on the sub-dividing gap 25. Therefore, based on the sub-electrodes 241, the electrochromic state of each pixel 26 can be controlled, thereby realizing a dynamic display of real-time transformation. In addition, since the electrode layer 21 is first divided into a plurality of independent electrode blocks 24 based on the main dividing gap 23, and then the electrode block 24 is divided into a plurality of sub-electrodes 241 based on the sub-dividing gap 25, the length of the sub-electrode 241 used to form the pixel 26 is reduced, thereby shortening the current path, and improving the uniformity and response speed of the electrochromic.

[0063] At least one electrode layer 21 is a light-transmitting electrode layer, which can be a light-transmitting structure such as an ITO electrode layer or a metal mesh electrode layer.

[0064] In one embodiment, one electrode layer 21 can be set as a light-transmitting electrode layer, and the other electrode layer 21 can be set as a non-light-transmitting electrode layer. In this case, a single-sided electrochromic display can be performed based on one side of the light-transmitting electrode layer. When the electrode layer 21 is a non-light-transmitting electrode layer, the non-light-transmitting electrode layer can be a non-light-transmitting structure such as an Ag electrode layer or a Cu electrode layer.

[0065] In another embodiment, both of the two electrode layers 21 may be light-transmitting electrode layers. In this case, bidirectional electrochromic display can be performed based on the light-transmitting electrode layers on both sides.

[0066] refer to Fig. 9 As shown, Fig. 9 A cross-sectional view of another electrochromic device provided in an embodiment of the present application, in which two electrode layers 21 are respectively arranged on corresponding substrates 20, and the electrode layer 21 on the substrate 20 is arranged toward the electrochromic functional layer 22. The substrate 20 can be a hard substrate, such as a glass substrate, or a flexible substrate, such as a PI (polyimide) substrate.

[0067] In some implementations of the embodiments of the present application, Fig. 9 As shown, the electrochromic function 22 can be an integral structure. In other embodiments, the electrochromic function 22 can also be divided into a plurality of independent blocks based on the main dividing gap 23 and / or the secondary dividing gap 25.

[0068] refer to Fig.10 As shown, Fig.10 A cross-sectional view of another electrochromic device provided in an embodiment of the present application, in which the electrochromic function 22 has a segmentation gap arranged opposite to the main segmentation gap 23 in the electrode layer 21, so as to divide the electrochromic function 22 into multiple independent blocks.

[0069] refer to Fig.11 As shown, Fig.11A cross-sectional view of another electrochromic device provided in an embodiment of the present application, in which the electrochromic function 22 has a segmentation gap arranged opposite to the secondary segmentation gap 25 in the electrode layer 21, so as to segment the electrochromic function 22 into multiple independent pixels.

[0070] refer to Fig.12 As shown, Fig.12 for Figure 4 The schematic diagram of the principle of connecting the sub-electrode to the electrode line in the electrochromic device shown in FIG. Figure 4-Figure 8 and Fig.12 As shown, for two electrode blocks 24 vertically opposite to each other in the first direction, the edge of the electrode layer included in the electrode block 24 is provided with a connection terminal 27 for connecting the electrode line. In this way, for two electrode blocks 24 vertically opposite to each other in the first direction, the electrode line connected to the sub-electrode 241 is led out from the edge of the electrode layer included in the electrode block 24, and the lead-out wires connected to the sub-electrodes 241 of the two electrode blocks 24 can be led out from the same side edge, which reduces the difficulty of wiring packaging.

[0071] refer to Fig.13 As shown, Fig.13 A control circuit diagram of an electrochromic device provided in an embodiment of the present application, combined with Figure 4-Figure 8 and Fig.13 As shown, in this mode, the electrode blocks 24 are respectively connected to independent control units 28. The sub-electrodes 241 are connected to the electrode lines 29 through the connection terminals 27, and the electrode lines 29 are connected to the control unit 28. The control unit 28 is used to provide an operating voltage to the connected sub-electrodes 241 to control the electrochromic state of the pixel 26.

[0072] exist Fig.13 In the illustrated manner, each electrode block 24 has an independent control unit 28. Two electrode blocks 24 vertically opposite to each other in the first direction form a group, and each group can be independently electrochromic controlled based on two control units 28 to control the coloring and fading of the pixels 26 in each group. Each group of electrode blocks 24 can be scanned and driven at the same time to synchronously perform electrochromic control, which can greatly improve the scanning efficiency compared to the method of using the same control unit 28 for all electrode blocks 24.

[0073] The control unit 28 can provide the connected sub-electrode 241 with a DC working voltage of a desired magnitude as a working voltage, or can provide an AC pulse voltage of a desired frequency and magnitude as a working voltage to control the electrochromic state of the pixel 26. Fig.13 Taking the rectangular electrode layer 21 as an example, one electrode layer 21 is divided into four electrode blocks 24, and two electrode layers 21 correspond to four electrode block groups. Fig.13In the target pixel (black filled area), the two electrode blocks 24 corresponding to the target pixel are respectively connected to the control unit 281 and the control unit 282. The two electrode blocks 24 are an electrode block group, which are respectively located in different electrode layers 21. The two sub-electrodes 241 that intersect with each other to form the target pixel are respectively connected to the connection end 271 and the connection end 272. The connection end 271 is connected to the control unit 281, and the connection end 272 is connected to the control unit 282. The control unit 281 and the control unit 282 can control the electrochromic state of the target pixel by providing the working voltage to the two sub-electrodes 241, so as to realize the coloring or fading of the target pixel. By providing a preset voltage to the two sub-electrodes 241, the target pixel can be colored, and the target pixel can be faded by disconnecting the preset voltage or providing a reverse voltage.

[0074] In some embodiments of the present application, when the number of pixels 26 is small or high-frequency display driving is not required, all electrode blocks 24 may be configured to use the same control unit 28, and each group of electrode blocks 24 may be scanned and driven one by one.

[0075] Optionally, for two electrode blocks 24 vertically opposite to each other in the first direction, the angle range of the sub-dividing gaps 25 in the two electrode blocks 24 intersecting out of plane is any angle between 0° and 180°. In order to achieve out of plane intersection, the angle needs to be greater than 0° and less than 180°. The angle can be set based on demand, and the embodiment of the present application does not specifically limit this.

[0076] In some embodiments of the present application, the width of the main dividing gap 23 is 0.05μm-5000μm; and / or, the width of the sub-main dividing gap 25 is 0.05μm-5000μm. Further, the width of the main dividing gap 23 can be set to 20μm-200μm; the width of the sub-main dividing gap 25 is 20μm-200μm. Within the above value range, the widths of the main dividing gap 23 and the sub-dividing gap 25 are moderate, which can avoid the electrode layer 21 being insufficiently isolated due to the width being too small, and can also avoid the display effect and panel size being affected by the width being too large.

[0077] Optionally, in the implementation of the present application, for two electrode blocks 24 vertically opposite to each other in the first direction, the width of the sub-electrode 241 in one electrode block 24 is set to be the same as that of the sub-electrode 241 in the other electrode block 24 to facilitate driving and controlling each sub-electrode 241 .

[0078] In the embodiment of the present application, the two electrode layers 21 arranged opposite to each other may be the same polygon. For example, the electrode layer 21 is a regular N-gon, where N is a positive integer greater than 2. In this case, the electrode layer 21 may have N main dividing gaps 23, one end of the main dividing gap 23 terminates at the center of the regular N-gon, and the other end terminates at a vertex of the regular N-gon.

[0079] When the electrode layer 21 is square, N=4, such as Figure 5 As shown in FIG. 1 , one end of the main dividing gap 23 is located at the center of the square, and the other end is located at a corresponding vertex of the square, so that the electrode layer 21 is divided into four triangular electrode blocks 24. Each electrode block 24 corresponds to one side of the square electrode layer 21. In this way, when one end of the sub-dividing gap 25 ends at a main dividing gap 23 adjacent to the electrode block 24, and the other end ends at the edge of the electrode layer included in the electrode block 24, since the sub-dividing gaps 25 in the two electrode blocks 24 vertically opposite to each other in the first direction intersect with each other in different planes, as shown in FIG. Figure 6 and Figure 7 As shown, the sub-electrodes 241 in the two electrode blocks 24 can be connected to the electrode line 29 from the same side of the electrode layer 21 .

[0080] refer to Fig.14 As shown, Fig.14 A schematic diagram of the segmentation principle of a triangular electrode layer provided in an embodiment of the present application, in which the electrode layer 21 is an equilateral triangle with three main segmentation gaps 23, one end of each of the main segmentation gaps 23 terminates at the center of the equilateral triangle, and the other end terminates at three vertices, thereby dividing the electrode layer 21 into three electrode blocks 24. One end of each of the sub-segmentation gaps 25 in the same electrode block 24 terminates at the same main segmentation gap 23, and the other end terminates at the same side of the equilateral triangle.

[0081] refer to Fig.15 As shown, Fig.15 A schematic diagram of the segmentation principle of a regular pentagonal electrode layer provided in an embodiment of the present application, in which the electrode layer 21 is a regular pentagon with five main segmentation gaps 23, one end of each of the main segmentation gaps 23 terminates at the center of the regular pentagon, and the other end terminates at five vertices, thereby segmenting the electrode layer 21 into five electrode blocks 24. One end of each of the sub-segmentation gaps 25 in the same electrode block 24 terminates at the same main segmentation gap 23, and the other end terminates at the same side of the regular pentagon.

[0082] refer to Fig.16 As shown, Fig.16A schematic diagram of the segmentation principle of a regular hexagonal electrode layer provided in an embodiment of the present application, in which the electrode layer 21 is a regular hexagon with six main segmentation gaps 23, one end of each of the main segmentation gaps 23 terminates at the center of the regular hexagon, and the other end terminates at six vertices, thereby segmenting the electrode layer 21 into six electrode blocks 24. One end of each of the sub-segmentation gaps 25 in the same electrode block 24 terminates at the same main segmentation gap 23, and the other end terminates at the same side of the regular hexagon.

[0083] When the electrode layer 21 is a regular polygon, it is not limited to Figure 8 , Figure 14-16 The method shown can also be other regular polygonal structures, which is not limited in the embodiments of the present application.

[0084] The graphic structure of the electrode layer 21 is not limited to a regular polygon, and can also be Fig.17 The circle shown.

[0085] refer to Fig.17 As shown, Fig.17 A schematic diagram of the segmentation principle of a circular electrode layer provided in an embodiment of the present application, in which the electrode layer 21 is circular, one end of the main segmentation gap 23 ends at the center of the circle, and the other end ends at the edge of the circle, and the electrode blocks 24 are the same sector. In this method, any number of radii can be used as the main segmentation line 23 to segment the circular electrode layer 21 into a plurality of identical sector-shaped electrode blocks 24. One end of the secondary segmentation gap 25 in the same electrode block 24 ends at the same main segmentation gap 23, and the other end ends at the same arc included in the electrode block 24.

[0086] The electrode layer 21 may be patterned by laser etching, chemical etching, or physical cutting to form the main dividing gaps 23 and the sub-dividing gaps 25 .

[0087] In the above-mentioned embodiment, the main dividing gap 23 and the auxiliary dividing gap 25 are both linear gaps. Obviously, the main dividing gap 23 can be a linear gap or a curved gap, and the auxiliary dividing gap 25 can be a linear gap or a curved gap. One of the main dividing gap 23 and the auxiliary dividing gap 25 can be a linear gap and the other can be a curved gap, or both can be linear gaps, or both can be curved gaps.

[0088] refer to Fig.18 As shown, Fig.18 A schematic diagram of the principle of dividing an electrode layer based on a curved dividing gap provided in an embodiment of the present application, in which the main dividing gap 23 and the auxiliary dividing gap 25 in the electrode layer 21 are both curved gaps.

[0089] It can be seen from the above description that the electrochromic device provided in the embodiment of the present application has at least the following advantages:

[0090] First, based on the main dividing gap 23, the electrode layer 21 can be divided into a plurality of independent electrode blocks 24, and then based on the secondary dividing gap 25, the electrode block 24 can be divided into a plurality of sub-electrodes 241, and the sub-electrodes 241 in two vertically opposite electrode blocks 24 intersect with each other in different planes to form a plurality of pixels 26. By providing a working voltage to the sub-electrodes 241, the electrochromic state of the pixel 26 can be controlled, and the coloring and fading of the pixel 26 can be dynamically controlled, and any image can be displayed according to the display requirements, and dynamic display can be realized.

[0091] Secondly, due to the poor environmental stability of electrochromic materials, the device needs to be packaged. As mentioned above, the segmentation method of the electrode layer 21 in the technical solution of the present application can make the electrode lines 29 of the sub-electrodes 241 in the two electrode blocks 24 vertically opposite to each other in the first direction be led out from the same side, which greatly reduces the packaging difficulty compared to the method in which the two sub-electrodes 241 corresponding to the pixel 26 lead out the electrode lines 29 from different sides.

[0092] Moreover, based on the main dividing gap 23, the electrode layer 21 can be divided into a plurality of independent electrode blocks 24, and then based on the secondary dividing gap 25, the electrode block 24 can be divided into a plurality of sub-electrodes 241. This specific electrode layer 21 division method can shorten the current path of the sub-electrodes 241. Taking the electrode layer 21 as a square as an example, Figure 3 In the method shown, the current path is the side length of the square, such as Figure 8 As shown, the maximum current path in the present application technology is half of the diagonal of the square. Due to the existence of the surface resistance of the electrode layer 24, the shortening of the current path can make the electrochromic response speed faster and the electrochromic state more uniform.

[0093] In addition, the electrode layer 21 segmentation method unique to the embodiment of the present application enables each electrode block 24 to be connected to a control unit 28 respectively. Compared with using a single control unit 28, multiple control units 28 can improve the scanning drive efficiency of the sub-electrodes 241, so as to be suitable for application scenarios with different display frequency requirements.

[0094] Based on the above embodiments, another embodiment of the present application further provides an electronic device, which includes the electrochromic device described in any one of the above embodiments.

[0095] The electronic device may be a mobile phone, a tablet computer, a wearable device or other electronic device with a display function. The electronic device adopts the electrochromic device in the above embodiment, which can realize dynamic arbitrary image display, is easy to package, has a fast electrochromic response speed, and a more uniform electrochromic state, and is suitable for application scenarios with different display frequencies.

[0096] In this specification, each embodiment is described in a progressive, parallel, or progressive and parallel manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other. For the electronic device disclosed in the embodiment, since it corresponds to the electrochromic device disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the relevant part of the electrochromic device.

[0097] It should be noted that in the description of the present application, it should be understood that the description of the drawings and embodiments is illustrative rather than restrictive. The same reference numerals throughout the embodiments of the specification identify the same structure. In addition, for the sake of understanding and ease of description, the drawings may exaggerate the thickness of some layers, films, panels, regions, etc. It is also understood that when an element such as a layer, film, region, or substrate is referred to as "on" another element, the element may be directly on the other element or there may be an intermediate element. In addition, "on" refers to positioning an element on or below another element, but does not essentially refer to positioning on the upper side of another element according to the direction of gravity.

[0098] The terms "upper", "lower", "top", "bottom", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are 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 cannot be understood as limiting the present application. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0099] It should also be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "comprises", "comprising" or any other variants thereof are intended to cover non-exclusive inclusion, so that an article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such article or device. In the absence of further restrictions, the elements defined by the sentence "comprising a ..." do not exclude the existence of other identical elements in the article or device including the above elements.

[0100] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An electrochromic device, characterized in that: include: Two parallel and opposite electrode layers; An electrochromic functional layer located between the electrode layers; The electrode layer has at least two main dividing gaps, and the main dividing gaps divide the electrode layer into a plurality of independent electrode blocks; the main dividing gaps in the two electrode layers are mirror-symmetrical; The electrode block has a plurality of parallel sub-dividing gaps, and the sub-dividing gaps divide the electrode block into a plurality of sub-electrodes; one end of the sub-dividing gap ends at a main dividing gap adjacent to the electrode block, and the other end ends at an edge of an electrode layer included in the electrode block; The direction perpendicular to the plane where the electrode layer is located is the first direction; for the two electrode blocks vertically opposite to each other in the first direction, the sub-division gaps in the two electrode blocks intersect with each other in different planes to divide the electrochromic device into a plurality of pixels.

2. The electrochromic device according to claim 1, characterized in that: For the two electrode blocks vertically opposite to each other in the first direction, the electrode lines connected to the sub-electrodes are led out from the edges of the electrode layers included in the electrode blocks.

3. The electrochromic device according to claim 1, characterized in that: The electrode blocks are respectively connected to independent control units.

4. The electrochromic device according to claim 1, characterized in that: For the two electrode blocks vertically opposite to each other in the first direction, the angle range of the skew-intersecting secondary dividing gaps in the two electrode blocks is any angle between 0° and 180°.

5. The electrochromic device according to claim 1, characterized in that: The width of the main dividing gap is 0.05 μm-5000 μm; And / or, the width of the sub-main dividing gap is 0.05 μm-5000 μm.

6. The electrochromic device according to claim 5, characterized in that: The width of the main dividing gap is 20 μm-200 μm; The width of the sub-main dividing gap is 20 μm-200 μm.

7. The electrochromic device according to claim 1, characterized in that: For the two electrode blocks vertically facing each other in the first direction, the width of the sub-electrodes in one electrode block is the same as the width of the sub-electrodes in the other electrode block.

8. The electrochromic device according to claim 1, characterized in that: The electrode layer is a regular N-gon; N is a positive integer greater than 2; The electrode layer has N main dividing gaps in it, one end of each main dividing gap ends at the center of the regular N-gon, and the other end ends at a vertex of the regular N-gon.

9. The electrochromic device according to claim 1, characterized in that: The electrode layer is circular; One end of the main dividing gap ends at the center of the circle, and the other end ends at the edge of the circle, forming a fan-shaped electrode block.

10. The electrochromic device according to claim 9, characterized in that: The fan-shaped electrode blocks have the same shape.

11. An electronic device, characterized in that: The invention comprises the electrochromic device as claimed in any one of claims 1 to 10.

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