Reflective display panel

Abstract

The utility model provides a reflective display panel. The reflective display panel comprises a first substrate, a second substrate and dimming particles, wherein the first substrate and the second substrate are oppositely arranged, and the dimming particles are located between the first substrate and the second substrate. The reflective display panel further comprises a plurality of first retaining walls and a plurality of second retaining walls, the first retaining walls are arranged on the side, facing the second substrate, of the first substrate and arranged at intervals in the first direction, and the second retaining walls are arranged on the side, facing the first substrate, of the second substrate and arranged at intervals in the second direction. At least one of the first retaining wall and the second retaining wall is provided with a groove, the groove and the first retaining wall or the second retaining wall opposite to the groove are arranged in an embedded mode, a one-way retaining wall is formed on the single-side substrate, the one-way first retaining wall or the one-way second retaining wall cannot block diffusion of dimming particles in multiple directions, and therefore the uniformity of diffusion of the dimming particles can be improved; therefore, the problem of uneven display caused by uneven cholesteric liquid crystal diffusion of an existing reflective display device is solved.

Description

Technical Field

[0001] The utility model relates to the field of display technology, in particular to a reflective display panel. Background Art

[0002] Cholesteric liquid crystal can realize Bragg reflection and is widely used in reflective display devices. At present, reflective display devices using a single-layer full-color cholesteric liquid crystal need to design a retaining wall structure due to the requirement of anti-color mixing, and the cholesteric liquid crystal is arranged in an isolation cavity surrounded by the retaining wall structure. The retaining wall structure is usually formed in one piece using nanoimprint microcup technology or photolithography cofferdam technology. However, due to the high viscosity of cholesteric liquid crystal, it is difficult to diffuse in a single-layer microcup or cofferdam structure, resulting in uneven diffusion of cholesteric liquid crystal, thereby causing the problem of uneven display of reflective display devices. Utility Model Content

[0003] The utility model provides a reflective display panel to alleviate the technical problem of uneven display caused by uneven diffusion of cholesteric liquid crystal in the existing reflective display device.

[0004] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0005] The embodiment of the utility model provides a reflective display panel, which includes a first substrate and a second substrate arranged opposite to each other, and dimming particles located between the first substrate and the second substrate; the reflective display panel also includes:

[0006] a plurality of first retaining walls, disposed on a side of the first substrate facing the second substrate and arranged at intervals in a first direction; and

[0007] A plurality of second retaining walls are disposed on a side of the second substrate facing the first substrate and are arranged at intervals in a second direction, wherein the second direction intersects the first direction;

[0008] At least one of the first barrier wall and the second barrier wall is provided with a groove, the groove and the first barrier wall or the second barrier wall opposite thereto, and two adjacent second barrier walls and two adjacent first barrier walls form an isolation cavity, and the dimming particles are located in the isolation cavity.

[0009] In the reflective display panel provided in the embodiment of the utility model, each of the first retaining walls is provided with a plurality of first grooves, the second retaining wall is embedded in the first grooves, the first grooves penetrate the first retaining wall, and two adjacent first grooves on two adjacent first retaining walls are provided along the first direction.

[0010] In the reflective display panel provided in the embodiment of the utility model, at least part of the first retaining wall is provided with a plurality of first grooves, and the second retaining wall is embedded in the first grooves; each of the second retaining walls is provided with a plurality of second grooves, and the first retaining wall is embedded in the second grooves;

[0011] Alternatively, each of the first retaining walls is provided with a plurality of first grooves, and the second retaining wall is embedded in the first grooves; at least a portion of the second retaining walls is provided with a plurality of second grooves, and the first retaining wall is embedded in the second grooves.

[0012] In the reflective display panel provided by the embodiment of the present utility model, two adjacent second grooves on different second retaining walls are arranged along the second direction; and two adjacent first grooves on different first retaining walls are arranged along the first direction.

[0013] In the reflective display panel provided by the embodiment of the present invention, the orthographic projection of the first groove on the first substrate at least partially overlaps with the orthographic projection of the second groove on the first substrate.

[0014] In the reflective display panel provided by the embodiment of the present invention, in the first direction or the second direction, the first grooves and the second grooves are alternately arranged.

[0015] In the reflective display panel provided by the embodiment of the utility model, two adjacent second grooves on different second retaining walls are staggered in the second direction; and two adjacent first grooves on different first retaining walls are staggered in the first direction.

[0016] In the reflective display panel provided by the embodiment of the present utility model, the first groove passes through the first blocking wall; the second groove passes through the second blocking wall.

[0017] In the reflective display panel provided by the embodiment of the present invention, the dimming particles are one of cholesteric liquid crystal, dye liquid crystal and plasma particles.

[0018] In the reflective display panel provided by the embodiment of the present invention, in a direction perpendicular to the plane where the first substrate is located, the first blocking wall and the second blocking wall have the same height.

[0019] In the reflective display panel provided by the embodiment of the utility model, the bonding force between the first baffle wall and the first substrate is greater than the bonding force between the first baffle wall and the second substrate; the bonding force between the second baffle wall and the second substrate is greater than the bonding force between the second baffle wall and the first substrate.

[0020] In the reflective display panel provided by the embodiment of the present invention, the bonding force between the first blocking wall and the second blocking wall is smaller than the bonding force between the first blocking wall and the first substrate, and the bonding force between the first blocking wall and the second blocking wall is smaller than the bonding force between the second blocking wall and the second substrate.

[0021] In the reflective display panel provided by the embodiment of the present utility model, the first blocking wall and the second blocking wall are detachably connected.

[0022] In the reflective display panel provided by the embodiment of the present invention, the first retaining wall abuts against the groove wall and groove bottom of the corresponding groove; and / or the second retaining wall abuts against the groove wall and groove bottom of the corresponding groove.

[0023] The beneficial effects of the utility model are as follows: in the reflective display panel provided by the utility model, the reflective display panel includes a first substrate and a second substrate that are arranged opposite to each other, and dimming particles located between the first substrate and the second substrate; the reflective display panel also includes a plurality of first retaining walls and a plurality of second retaining walls, the plurality of first retaining walls are arranged on a side of the first substrate facing the second substrate, and are arranged at intervals in a first direction, the plurality of second retaining walls are arranged on a side of the second substrate facing the first substrate, and are arranged at intervals in a second direction, at least one of the first retaining wall and the second retaining wall is provided with a groove, the groove is embedded in the first retaining wall or the second retaining wall opposite to it, and two adjacent retaining walls are provided. The second retaining wall and the two adjacent first retaining walls form an isolation cavity, and the dimming particles are located in the isolation cavity. The utility model arranges the first retaining wall on the first substrate, arranges the second retaining wall on the second substrate, and arranges the first groove on the first retaining wall, and the second retaining wall is embedded in the first groove, so as to separate the first retaining wall and the second retaining wall and arrange them separately, so as to form a unidirectional retaining wall on the single-sided substrate. In this way, after the dimming particles are dripped into the area surrounded by the first retaining wall or the second retaining wall, the unidirectional first retaining wall or the second retaining wall will not block the diffusion of the dimming particles in multiple directions, thereby improving the uniformity of the diffusion of the dimming particles, thereby improving the problem of uneven display caused by uneven diffusion of cholesteric liquid crystal in existing reflective display devices. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, 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 some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0025] Figure 1 It is a partial planar structural schematic diagram of an existing reflective display device.

[0026] Figure 2 A schematic diagram of a planar structure of a reflective display panel provided in an embodiment of the utility model.

[0027] Figure 3 for Figure 2 A schematic diagram of a cross-sectional structure along the M-M' direction.

[0028] Figure 4 for Figure 2 A schematic diagram of a cross-sectional structure along the N-N' direction.

[0029] Figure 5a for Figure 2 A schematic diagram of a planar structure of the first retaining wall on the first substrate.

[0030] Figure 5b for Figure 2 A schematic diagram of a planar structure of the second retaining wall on the second substrate.

[0031] Figure 5c for Figure 5a The first retaining wall and Figure 5b Schematic cross-sectional view of the assembly of the second retaining wall.

[0032] Figure 6 for Figure 2 Schematic diagram of another cross-sectional structure along the N-N' direction.

[0033] Figure 7 for Figure 2 A schematic diagram of a cross-sectional structure along the O-O' direction.

[0034] Figure 8 Another schematic diagram of the planar structure of the reflective display panel provided in the embodiment of the utility model.

[0035] Fig. 9 A schematic diagram of another planar structure of a reflective display panel provided in an embodiment of the utility model.

[0036] Fig.10 A schematic diagram of another planar structure of a reflective display panel provided in an embodiment of the utility model

[0037] Fig.11 for Fig.10 A schematic diagram of a planar structure of the first retaining wall on the first substrate.

[0038] Fig.12 for Fig.10 A schematic diagram of a planar structure of the second retaining wall on the second substrate. DETAILED DESCRIPTION

[0039] The description of the following embodiments is with reference to the attached diagrams to illustrate specific embodiments in which the present invention can be implemented. The directional terms mentioned in the present invention, such as [up], [down], [front], [back], [left], [right], [inside], [outside], [side], etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present invention, rather than to limit the present invention. In the figures, units with similar structures are represented by the same reference numerals. In the accompanying drawings, the thickness of some layers and regions is exaggerated for clear understanding and ease of description. That is, the size and thickness of each component shown in the drawings are shown arbitrarily, but the present invention is not limited to this.

[0040] The technical problem of uneven display caused by uneven diffusion of cholesteric liquid crystal in existing reflective display devices is mainly due to the fact that the retaining wall structure of the reflective display device is usually formed in one piece using nanoimprint microcup technology or photolithography cofferdam technology. Taking photolithography cofferdam as an example, refer to Figure 1 A cofferdam 700 is integrally formed on a substrate 600 as a retaining wall structure by using a photolithography cofferdam technology. The integrally formed cofferdam 700 forms an isolation cavity 701. When cholesteric liquid crystal is dripped into the isolation cavity 701, due to the high viscosity of the cholesteric liquid crystal and the integrally formed cofferdam 700 blocking the diffusion of the cholesteric liquid crystal in all directions, it is difficult for the cholesteric liquid crystal to diffuse evenly in the isolation cavity, thereby causing the problem of uneven display of the reflective display device.

[0041] Therefore, the utility model provides a reflective display panel to solve the above problems.

[0042] Please refer to Figure 2 to Figure 5c , Figure 2 A schematic diagram of a planar structure of a reflective display panel provided in an embodiment of the utility model, Figure 3 for Figure 2 A schematic diagram of a cross-sectional structure along the M-M' direction, Figure 4 for Figure 2 A schematic diagram of a cross-sectional structure along the N-N' direction, Figure 5a for Figure 2 A schematic diagram of a planar structure of the first retaining wall on the first substrate, Figure 5b for Figure 2 A schematic diagram of a planar structure of the second retaining wall on the second substrate, Figure 5c for Figure 5a The first retaining wall and Figure 5bA cross-sectional schematic diagram of the alignment and assembly of the second retaining wall in the reflective display panel 100. The reflective display panel 100 includes a first substrate 10 and a second substrate 20 arranged opposite to each other, and a dimming particle 30 located between the first substrate 10 and the second substrate 20. The reflective display panel 100 also includes a plurality of first retaining walls 40 and a plurality of second retaining walls 50. The plurality of first retaining walls 40 are arranged on the side of the first substrate 10 facing the second substrate 20, and are arranged at intervals in the first direction Y. The plurality of second retaining walls 50 are arranged on the side of the second substrate 20 facing the first substrate 10, and are arranged at intervals in the second direction X, and the second direction X intersects with the first direction Y. A groove is provided on at least one of the first retaining wall 40 and the second retaining wall 50, and the groove is embedded with the first retaining wall 40 or the second retaining wall 50 opposite to it, and two adjacent second retaining walls 50 and two adjacent first retaining walls 40 form an isolation cavity 60, and the dimming particle 30 is located in the isolation cavity 60.

[0043] The utility model arranges a first retaining wall 40 on a first substrate 10, arranges a second retaining wall 50 on a second substrate 20, and arranges a groove on at least one of the first retaining wall 40 and the second retaining wall 50, and the groove is engaged with the first retaining wall 40 or the second retaining wall 50 opposite thereto, so as to separate and arrange the first retaining wall 40 and the second retaining wall 50 separately, so as to form a unidirectional retaining wall on a single-sided substrate. In this way, after the dimming particles 30 are dripped into the area surrounded by the first retaining wall 40 or the second retaining wall 50, the unidirectional first retaining wall 40 or the second retaining wall 50 will not block the diffusion of the dimming particles 30 in multiple directions, so as to improve the uniformity of the diffusion of the dimming particles 30, thereby improving the problem of uneven display caused by uneven diffusion of cholesteric liquid crystal in the existing reflective display device.

[0044] Specifically, refer to Figure 2 and Figure 3 The first substrate 10 includes a first substrate 11, a pixel electrode 12 and a first alignment layer 13 disposed on the side of the first substrate 11 facing the second substrate 20, the first alignment layer 13 being disposed on the side of the pixel electrode 12 away from the first substrate 11, and the first retaining wall 40 being disposed on the surface of the first alignment layer 13 away from the first substrate 11. Of course, the first substrate 10 further includes a driving circuit layer electrically connected to the pixel electrode 12, the driving circuit layer may be located between the first substrate 11 and the pixel electrode 12, and is used to provide a driving signal to the pixel electrode 12.

[0045] The second substrate 20 includes a second substrate 21, a common electrode 22 and a second alignment layer 23 arranged on the side of the second substrate 21 facing the first substrate 10, the second alignment layer 23 is arranged on the side of the common electrode 22 away from the second substrate 21, and the second retaining wall 50 is arranged on the surface of the second alignment layer 23 away from the second substrate 21. The second substrate 21 can be the same as the first substrate 11, for example, the second substrate 21 and the first substrate 11 are both hard substrates such as glass substrates or quartz substrates. The second alignment layer 23 can be the same as the first alignment layer 13, for example, the second alignment layer 23 and the first alignment layer 13 are both polyimide (PI) films. The common electrode 22 can be the same as the pixel electrode 12, for example, the common electrode 22 and the pixel electrode 12 are both transparent conductive films, such as indium tin oxide (ITO). The difference between the common electrode 22 and the pixel electrode 12 is that the pixel electrode 12 is a patterned electrode block, while the common electrode 22 is arranged on the entire surface, and in order to improve the light extraction efficiency of the reflective display device, the pixel electrode 12 can also be a reflective electrode. For example, the pixel electrode 12 can be a reflective layer formed by Ag, Mg, Al, Pt, Pd, Au, Ni, Nd, Ir, Cr or a combination thereof, and a single layer or multiple layers formed by ITO, IZO, ZnO or In2O3.

[0046] The dimming particle 30 is one of cholesteric liquid crystal, dye liquid crystal and plasma particle. This embodiment takes the dimming particle 30 as an example of cholesteric liquid crystal. Cholesteric liquid crystal has wide-wave reflection photoelectric characteristics. The molecular arrangement of cholesteric liquid crystal is a multilayer structure. The long axes of the molecules in the layer are parallel to each other due to the end group effect. The molecular directions between the layers are discontinuous and uniformly deflected to form a spiral structure. When the spiral axis is parallel to the incident light, the cholesteric liquid crystal has a selective light reflection characteristic. The circularly polarized light with the same rotation direction as the cholesteric liquid crystal spiral structure, the central wavelength λ0=n×P, and the reflected wave width Δλ=Δn×P will be reflected, while the light of the remaining wavelengths will be transmitted, where n and Δn are the average refractive index and birefringence of the cholesteric liquid crystal, respectively, and P is the pitch of the cholesteric liquid crystal. In this way, by controlling the pitch of the cholesteric liquid crystal, the reflection of light of different wavelengths can be achieved, and then the color display of the reflective display panel 100 can be achieved.

[0047] Reference Figure 2 and Figure 4The reflective display panel 100 further includes a plurality of first retaining walls 40 and a plurality of second retaining walls 50, wherein the plurality of first retaining walls 40 are arranged at intervals in the first direction Y, and the extension directions of the first retaining walls 40 are the same. The plurality of second retaining walls 50 are arranged at intervals in the second direction X, and the extension directions of the second retaining walls 50 are the same. Optionally, the first direction Y is perpendicular to the second direction X, for example, the first direction Y is a column direction, and the second direction X is a row direction.

[0048] A plurality of first grooves 401 are disposed on each of the first retaining walls 40, and the second retaining walls 50 are embedded in the first grooves 401, so that the first retaining walls 40 and the second retaining walls 50 are detachably connected. Two adjacent second retaining walls 50 and two adjacent first retaining walls 40 form an isolation cavity 60, the dimming particles 30 are located in the isolation cavity 60, and the pixel electrode 12 is disposed corresponding to the isolation cavity 60. Among them, in the direction perpendicular to the plane where the first substrate 10 is located, the heights of the first baffle wall 40 and the second baffle wall 50 are equal, so that the first baffle wall 40 and the second baffle wall 50 can both contact the first substrate 10 and the second substrate 20, and then the first baffle wall 40 and the second baffle wall 50 form the isolation cavity 60. Under the action of the first substrate 10 and the second substrate 20, a closed isolation cavity 60 is formed, that is, the first substrate 10 and the second substrate 20 cooperate with the first baffle wall 40 and the second baffle wall 50 to form the closed isolation cavity 60, so as to prevent the color adjustment particles in the isolation cavity 60 from flowing into the adjacent isolation cavity 60 and causing color cross-talk.

[0049] The first groove 401 penetrates the first retaining wall 40, that is, the first retaining wall 40 is divided into a plurality of mutually disconnected portions by the first groove 401, and the first groove 401 exposes the first substrate 10. The first groove 401 includes a groove wall and a groove bottom, and the space enclosed by the groove wall and the groove bottom is the first groove 401, wherein the groove wall of the first groove 401 is the surface of the disconnected position of the first retaining wall 40, and the groove bottom of the first groove 401 is the surface of the first substrate 10 exposed by the first groove 401.

[0050] The second retaining wall 50 is embedded in the first groove 401 , and the second retaining wall 50 abuts against the groove wall and groove bottom of the first groove 401 on the first retaining wall 40 , that is, the second retaining wall 50 contacts the first retaining wall 40 and the first substrate 10 .

[0051] Optionally, the surface shape of the first retaining wall 40 and / or the second retaining wall 50 is at least one of a straight line and a curved line. This embodiment takes the surface shape of the first retaining wall 40 and the second retaining wall 50 as a straight line as an example. Of course, in some other embodiments, the first retaining wall 40 and the second retaining wall 50 can also be set to a curved line or other shapes.

[0052] Optionally, the longitudinal cross-sectional shape of the second retaining wall 50 is at least one of an arc, a trapezoid and a triangle. This embodiment takes the longitudinal cross-sectional shape of the second retaining wall 50 as a trapezoid as an example. The trapezoid is easier to realize in terms of technology, and the contact and sealing property of the trapezoidal plane is better. When the second retaining wall 50 is embedded in the first groove 401 and contacts the first retaining wall 40, better combination and sealing can be achieved. Accordingly, the longitudinal cross-sectional shape of the first retaining wall 40 is at least one of an arc, a trapezoid and a triangle, preferably a trapezoid.

[0053] Optionally, the material of the first retaining wall 40 is the same as that of the second retaining wall 50, for example, the materials of the first retaining wall 40 and the second retaining wall 50 are both photoresist materials, such as PS, BM, etc. The material of the first retaining wall 40 and the second retaining wall 50 can be selected to be a light-transmissive or light-opaque material. Of course, in some other embodiments, the materials of the first retaining wall 40 and the second retaining wall 50 are different, for example, the hardness of the second retaining wall 50 is less than that of the first retaining wall 40, that is, the elastic modulus of the second retaining wall 50 is less than that of the first retaining wall 40, so that when the second retaining wall 50 is embedded in the first groove 401, the second retaining wall 50 is easy to deform, and then can fully abut against the groove wall and groove bottom of the first groove 401 to achieve better combination and closure. At the same time, in the second direction X, the opening width of the first groove 401 is smaller than the width of the second retaining wall 50, so that when the second retaining wall 50 is embedded in the first groove 401, the first groove 401 can generate an extrusion force on the second retaining wall 50, so that the second retaining wall 50 embedded in the first groove 401 is deformed to fully abut against the groove wall and groove bottom of the first groove 401.

[0054] Reference Figure 5a , Figure 5b as well as Figure 5cThe first retaining wall 40 is arranged on the first substrate 10, and the second retaining wall 50 is arranged on the second substrate 20, that is, the first retaining wall 40 is directly prepared on the first substrate 10, and the second retaining wall 50 is directly prepared on the second substrate 20, and then the first substrate 10 prepared with the first retaining wall 40 and the second substrate 20 prepared with the second retaining wall 50 are aligned and bonded. During the alignment and bonding process of the first substrate 10 and the second substrate 20, the second retaining wall 50 is embedded in the first groove 401 of the first retaining wall 40, so that the first retaining wall 40 and the second retaining wall 50 enclose the isolation cavity 60.

[0055] Since the first retaining wall 40 is directly prepared on the first substrate 10, and the second retaining wall 50 is directly prepared on the second substrate 20, after the first substrate 10 and the second substrate 20 are aligned and bonded, the first retaining wall 40 will still contact the second substrate 20, and the second retaining wall 50 will still contact the first substrate 10, and the contact bonding force is smaller than the bonding force during direct preparation. Therefore, the bonding force between the first retaining wall 40 and the first substrate 10 is greater than the bonding force between the first retaining wall 40 and the second substrate 20; the bonding force between the second retaining wall 50 and the second substrate 20 is greater than the bonding force between the second retaining wall 50 and the first substrate 10; and the bonding force between the first retaining wall 40 and the second retaining wall 50 is smaller than the bonding force between the first retaining wall 40 and the first substrate 10, and the bonding force between the first retaining wall 40 and the second retaining wall 50 is smaller than the bonding force between the second retaining wall 50 and the second substrate 20.

[0056] Optionally, two adjacent first grooves 401 on two adjacent first retaining walls 40 are arranged along the first direction Y, so that the corresponding multiple first grooves 401 on multiple first retaining walls 40 are arranged in a straight line, which can facilitate the preparation of the first grooves 401.

[0057] In one embodiment, referring to Figures 2 to 7 , Figure 6 for Figure 2 Another schematic diagram of the cross-sectional structure along the N-N' direction, Figure 7 for Figure 2 A schematic diagram of a cross-sectional structure along the O-O' direction. Figure 6 and Figure 7, which is different from the above embodiment, at least part of the first retaining wall 40 is provided with a plurality of first grooves 401, each of the second retaining walls 50 is provided with a plurality of second grooves 501, the first retaining wall 40 is embedded in the second grooves 501, and the second retaining wall 50 is embedded in the first grooves 401, so as to increase the contact area between the second retaining wall 50 and the first retaining wall 40, thereby improving the bonding force between the second retaining wall 50 and the first retaining wall 40. This embodiment is described by taking the case where each of the first retaining walls 40 is provided with a plurality of first grooves 401 as an example.

[0058] Specifically, refer to Figure 6 , the first groove 401 does not penetrate the first retaining wall 40, that is, a portion of the thickness of the first retaining wall 40 is retained at the position where the first groove 401 is set. The groove wall and the groove bottom of the first groove 401 are both the surface of the first retaining wall 40. The second retaining wall 50 is embedded in the first groove 401, and the second retaining wall 50 abuts against the groove wall and the groove bottom of the first groove 401, that is, the second retaining wall 50 contacts the first retaining wall 40 in the first groove 401.

[0059] Reference Figure 7 , the second groove 501 does not penetrate the second retaining wall 50, that is, a portion of the thickness of the second retaining wall 50 is retained at the position where the second groove 501 is set. The groove wall and the groove bottom of the second groove 501 are both the surface of the second retaining wall 50. The first retaining wall 40 is embedded in the second groove 501, and the first retaining wall 40 abuts against the groove wall and the groove bottom of the second groove 501, that is, the first retaining wall 40 contacts the second retaining wall 50 in the second groove 501.

[0060] Optionally, two adjacent second grooves 501 on different second retaining walls 50 are arranged along the second direction X; two adjacent first grooves 401 on different first retaining walls 40 are arranged along the first direction Y. When the first retaining wall 40 is embedded in the second groove 501, and the second retaining wall 50 is embedded in the first groove 401, the orthographic projection of the first groove 401 on the first substrate 10 at least partially overlaps with the orthographic projection of the second groove 501 on the first substrate 10. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0061] In one embodiment, see Figures 2 to 8 , Figure 8 Another schematic diagram of the planar structure of the reflective display panel 100 provided in the embodiment of the present utility model. Figure 8, which is different from the above embodiment, each of the first retaining walls 40 is provided with a plurality of first grooves 401, and the second retaining wall 50 is embedded in the first grooves 401; at least part of the second retaining walls 50 is provided with a plurality of second grooves 501, and the first retaining wall 40 is embedded in the second grooves 501. This embodiment is described by taking part of the second retaining walls 50 as an example in which a plurality of second grooves 501 are provided, and another part of the second retaining walls 50 is not provided with the second grooves 501, and the second retaining walls 50 provided with a plurality of second grooves 501 and the second retaining walls 50 not provided with the second grooves 501 are alternately arranged, and at this time, in the second direction X, the first grooves 401 and the second grooves 501 are alternately arranged. Of course, in some other embodiments, the second retaining wall 50 provided with a plurality of second grooves 501 may also be arranged adjacent to the second retaining wall 50 not provided with the second grooves 501, and at this time, in the second direction X, the first grooves 401 and the second grooves 501 are adjacent to each other. In some other embodiments, part of the first retaining wall 40 may be provided with a plurality of the first grooves 401, and another part of the first retaining wall 40 may not be provided with the first groove 401, and the first retaining wall 40 provided with a plurality of the first grooves 401 and the first retaining wall 40 not provided with the first groove 401 are alternately arranged. In this case, in the first direction Y, the first grooves 401 and the second grooves 501 are alternately arranged. For other descriptions, please refer to the above embodiments, which will not be repeated here.

[0062] In one embodiment, see Figures 2 to 9 , Fig. 9 This is another schematic diagram of a planar structure of a reflective display panel 100 provided in an embodiment of the present utility model. Fig. 9 , which is different from the above embodiment, the extension direction of the second retaining wall 50 intersects and is not perpendicular to the extension direction of the first retaining wall 40, that is, the first direction Y intersects and is not perpendicular to the second direction X. In this embodiment, the first groove 401 may penetrate the first retaining wall 40; or, the first groove 401 does not penetrate the first retaining wall 40. In this case, the second retaining wall 50 needs to be provided with a second groove 501 to cooperate with the first groove 401, so that the first retaining wall 40 is embedded in the second groove 501, and the second retaining wall 50 is embedded in the first groove 401. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0063] In one embodiment, see Figures 2 to 12 , Fig.10 This is another schematic plan view of the reflective display panel 100 provided in an embodiment of the present utility model. Fig.11 for Fig.10A schematic diagram of a planar structure of the first retaining wall 40 on the first substrate 10, Fig.12 for Fig.10 A schematic diagram of a planar structure of the second retaining wall 50 on the second substrate 20. Fig.10 , Fig.11 as well as Fig.12 , which is different from the above embodiment, each of the first retaining walls 40 is provided with a plurality of first grooves 401, each of the second retaining walls 50 is provided with a plurality of second grooves 501, the first retaining wall 40 is embedded in the second groove 501, and the second retaining wall 50 is embedded in the first groove 401. Two adjacent second grooves 501 on the second retaining wall 50 are staggered in the second direction X; two adjacent first grooves 401 on the first retaining wall 40 are staggered in the first direction Y.

[0064] Optionally, the first groove 401 passes through the first retaining wall 40; the second groove 501 passes through the second retaining wall 50. Of course, in some other embodiments, the first groove 401 may not pass through the first retaining wall 40; the second groove 501 may not pass through the second retaining wall 50. For other descriptions, please refer to the above embodiment, which will not be repeated here.

[0065] According to the above embodiments, it can be seen that:

[0066] The utility model provides a reflective display panel, the reflective display panel comprises a first substrate and a second substrate arranged opposite to each other, and dimming particles located between the first substrate and the second substrate; the reflective display panel also comprises a plurality of first retaining walls and a plurality of second retaining walls, the plurality of first retaining walls are arranged on a side of the first substrate facing the second substrate and are arranged at intervals in a first direction, the plurality of second retaining walls are arranged on a side of the second substrate facing the first substrate and are arranged at intervals in a second direction, at least one of the first retaining walls and the second retaining walls is provided with a groove, the groove is embedded with the first retaining wall or the second retaining wall opposite to it, and two adjacent second retaining walls are provided with a groove. The retaining wall and the two adjacent first retaining walls form an isolation cavity, and the dimming particles are located in the isolation cavity. The utility model arranges the first retaining wall on the first substrate, arranges the second retaining wall on the second substrate, and arranges the first groove on the first retaining wall, and the second retaining wall is embedded in the first groove, so as to separate the first retaining wall and the second retaining wall and arrange them separately, so as to form a unidirectional retaining wall on the single-sided substrate. In this way, after the dimming particles are dripped into the area surrounded by the first retaining wall or the second retaining wall, the unidirectional first retaining wall or the second retaining wall will not block the diffusion of the dimming particles in multiple directions, thereby improving the uniformity of the diffusion of the dimming particles, and further improving the problem of uneven display caused by uneven diffusion of cholesteric liquid crystal in existing reflective display devices.

[0067] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0068] The above is a detailed introduction to the embodiments of the utility model. Specific examples are used in this article to illustrate the principles and implementation methods of the utility model. The description of the above embodiments is only used to help understand the technical solution and core idea of ​​the utility model. Ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A reflective display panel, characterized in that: It comprises a first substrate and a second substrate which are arranged opposite to each other, and light-adjusting particles located between the first substrate and the second substrate; The reflective display panel further includes: a plurality of first retaining walls, disposed on a side of the first substrate facing the second substrate and arranged at intervals in a first direction; and A plurality of second retaining walls are disposed on a side of the second substrate facing the first substrate and are arranged at intervals in a second direction, wherein the second direction intersects the first direction; At least one of the first retaining wall and the second retaining wall is provided with a groove, the groove is embedded with the first retaining wall or the second retaining wall opposite thereto, and two adjacent second retaining walls and two adjacent first retaining walls form an isolation cavity, and the dimming particles are located in the isolation cavity.

2. The reflective display panel according to claim 1, characterized in that: Each of the first retaining walls is provided with a plurality of first grooves, the second retaining wall is embedded in the first grooves, the first grooves penetrate through the first retaining wall, and two adjacent first grooves on two adjacent first retaining walls are provided along the first direction.

3. The reflective display panel according to claim 1, characterized in that: At least part of the first retaining wall is provided with a plurality of first grooves, and the second retaining wall is embedded in the first grooves; each of the second retaining walls is provided with a plurality of second grooves, and the first retaining wall is embedded in the second grooves; Alternatively, each of the first retaining walls is provided with a plurality of first grooves, and the second retaining wall is embedded in the first grooves; at least a portion of the second retaining walls is provided with a plurality of second grooves, and the first retaining wall is embedded in the second grooves.

4. The reflective display panel according to claim 3, characterized in that: Two adjacent second grooves on different second retaining walls are arranged along the second direction; and two adjacent first grooves on different first retaining walls are arranged along the first direction.

5. The reflective display panel according to claim 4, characterized in that: An orthographic projection of the first groove on the first substrate at least partially overlaps with an orthographic projection of the second groove on the first substrate.

6. The reflective display panel according to claim 4, characterized in that: In the first direction or the second direction, the first grooves and the second grooves are arranged alternately.

7. The reflective display panel according to claim 3, characterized in that: Two adjacent second grooves on different second retaining walls are staggered in the second direction; and two adjacent first grooves on different first retaining walls are staggered in the first direction.

8. The reflective display panel according to claim 7, characterized in that: The first groove passes through the first retaining wall; the second groove passes through the second retaining wall.

9. The reflective display panel according to claim 1, characterized in that: The light-adjusting particles are one of cholesteric liquid crystal, dye liquid crystal and plasma particles.

10. The reflective display panel according to any one of claims 1 to 9, characterized in that: In a direction perpendicular to the plane where the first substrate is located, the first retaining wall and the second retaining wall have the same height.

11. The reflective display panel according to claim 10, characterized in that: The bonding force between the first blocking wall and the first substrate is greater than the bonding force between the first blocking wall and the second substrate; the bonding force between the second blocking wall and the second substrate is greater than the bonding force between the second blocking wall and the first substrate.

12. The reflective display panel according to claim 11, characterized in that: The bonding force between the first blocking wall and the second blocking wall is smaller than the bonding force between the first blocking wall and the first substrate, and the bonding force between the first blocking wall and the second blocking wall is smaller than the bonding force between the second blocking wall and the second substrate.

13. The reflective display panel according to claim 10, characterized in that: The first retaining wall is detachably connected to the second retaining wall.

14. The reflective display panel according to claim 13, characterized in that: The first retaining wall abuts against the groove wall and groove bottom of the corresponding groove; and / or the second retaining wall abuts against the groove wall and groove bottom of the corresponding groove.

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