Reflecting film, display module and display device

Abstract

The invention provides a reflecting film, a display module and a display device, the reflecting film comprises a first surface and a second surface which are oppositely arranged, and an accommodating cavity located between the first surface and the second surface, and charged particles are arranged in the accommodating cavity; the reflecting film comprises a plurality of particle gathering parts arranged on the first surface and / or the second surface; in the first state, no voltage difference exists between the first surface and the second surface; in the second state, a voltage difference exists between the first surface and the second surface, the charged particles are concentrated in the particle gathering parts, and the roughness of the first surface and / or the second surface where the particle gathering parts are located in the second state is larger than the roughness of the first surface and / or the second surface in the first state. The reflecting film provided by the invention not only can present a high-definition display effect, but also can switch at least one surface into a frosted display effect, and can meet the use requirements of different application scenes.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a reflective film, a display module and a display device. Background Art

[0002] In recent years, in order to improve the appearance and display effect of the display, flexible OLED (Organic Light-Emitting Diode) displays have been increasingly used. OLED (Organic Light-Emitting Diode) is an active light-emitting device with a sandwich structure consisting of multiple organic layers and electrodes on both sides. At present, display screens based on AMOLED (Active-matrix organic light-emitting diode) have been commercialized in the fields of smartphones, watches, and laptops.

[0003] However, the current display effect of OLED display modules is single and it is difficult to take into account the needs of different application scenarios. Summary of the invention

[0004] In view of this, the purpose of the present application is to propose a reflective film, a display module and a display device that can switch between a high-definition state and a frosted state to meet the usage requirements of different application scenarios.

[0005] Based on the above purpose, the present application provides a reflective film, including:

[0006] a first surface;

[0007] a second surface, the second surface being arranged opposite to the first surface;

[0008] a containing cavity, the containing cavity being located between the first surface and the second surface, and having charged particles arranged in the containing cavity;

[0009] A plurality of particle gathering parts, wherein the plurality of particle gathering parts are arranged on the first surface and / or the second surface;

[0010] wherein, in a first state, there is no voltage difference between the first surface and the second surface;

[0011] In the second state, there is a voltage difference between the first surface and the second surface, the charged particles are concentrated in each particle gathering part, and the roughness of the first surface and / or the second surface where the particle gathering part is located in the second state is greater than that in the first state.

[0012] In one embodiment,

[0013] The charged particles include positively charged particles and negatively charged particles;

[0014] The first surface is provided with a first circuit, the second surface is provided with a second circuit, the particle gathering portion includes a first gathering portion and a second gathering portion, a plurality of the first gathering portions are provided in the first circuit, and a plurality of the second gathering portions are provided in the second circuit;

[0015] In the second state, a voltage difference is generated between the first circuit and the second circuit, the first surface forms a first recess for accommodating the first gathering portion, and the second surface forms a second recess for accommodating the second gathering portion;

[0016] Preferably, the first gathering parts are arranged in an array on the first surface;

[0017] Preferably, the second gathering portions are arranged in an array on the second surface.

[0018] In one embodiment, the charged particles include positively charged particles or negatively charged particles;

[0019] The first surface or the second surface is provided with a conductive circuit, and the particle gathering part is provided in the conductive circuit; in the second state, there is a voltage difference between the first surface or the second surface where the particle gathering part is located and another surface, and a pit is formed on the first surface or the second surface where the particle gathering part is located, and the particle gathering part is located in the pit;

[0020] Preferably, the particle aggregation parts are arranged in an array on the first surface or the second surface.

[0021] In one embodiment, an orthographic projection of the first focusing portion on the second surface does not overlap with an orthographic projection of the second focusing portion on the second surface.

[0022] In one embodiment,

[0023] The first circuit includes a first connecting line, and the first connecting line connects a plurality of the first gathering portions to form a first circuit pattern;

[0024] The second circuit includes a second connecting line, and the second connecting line connects a plurality of the second gathering portions to form a second circuit pattern;

[0025] Preferably, the first circuit pattern and the second circuit pattern have the same shape;

[0026] Preferably, the first circuit pattern and the second circuit pattern are completely identical;

[0027] Preferably, the shapes of the first circuit pattern and the second circuit pattern include at least one of an S-shape, a bow shape or a zigzag shape. In one embodiment, the reflective film is a flexible film;

[0028] And / or, the reflective film includes a plurality of superimposed film layers, and the film layers where the first surface and the second surface are located are flexible films.

[0029] In one embodiment, the particle aggregation portion includes an elastic conductive material;

[0030] Preferably, the particle aggregation portion is circular in shape;

[0031] Preferably, the particle gathering portion comprises a metal plate.

[0032] In one embodiment, the charged particles include transparent particles;

[0033] Preferably, the accommodating cavity is filled with a transparent fluid medium;

[0034] Preferably, the accommodating chamber is configured as a vacuum chamber.

[0035] Based on the same inventive concept, the present application also discloses a display module, which includes the reflective film described in any one of the above items, and the display module also includes a display panel, and the reflective film is located on the light-emitting side of the display panel.

[0036] Based on the same inventive concept, the present application also discloses a display device, which includes any one of the display modules described above.

[0037] Compared with the prior art, the reflective film provided in the present application, by arranging charged particles in the accommodating cavity and arranging multiple particle aggregation parts on the first surface and / or the second surface, in the first state, the first surface and the second surface remain flat due to not being subjected to force, and has little impact on the outgoing light of the display panel when in use, can present a high-definition display effect, and is suitable for audio and video entertainment mode.

[0038] In the second state, there is a voltage difference between the first surface and the second surface, and the charged particles are concentrated in the particle gathering parts, causing the surface where the particle gathering parts are located to deform, so that at least one surface of the reflective film becomes a rough and flat frosted surface, which can not only diffusely reflect external light, but also scatter the outgoing light, so that the light is diffused in all directions, and the display effect is softer and more uniform, avoiding glare and visual fatigue, improving visual comfort, and being suitable for text reading mode.

[0039] Therefore, the reflective film of the present application can not only present a high-definition display effect, but also switch at least one surface to a frosted display effect, thereby taking into account the usage requirements of different application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solutions in the present application or related technologies, the drawings required for use in the embodiments or related technical descriptions are 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 these drawings without creative work.

[0041] Figure 1 This is a schematic diagram of a reflective film in use in one embodiment of the present application;

[0042] Figure 2 is a schematic diagram of a reflective film in a first state according to an embodiment of the present application;

[0043] Figure 3 is a schematic diagram of a reflective film in a second state according to an embodiment of the present application;

[0044] Figure 4 A schematic diagram of a top view of a reflective film in one embodiment of the present application;

[0045] Figure 5 It is a schematic diagram of a reflective film in a first state in another embodiment of the present application;

[0046] Figure 6 It is a schematic diagram of a reflective film in a second state according to another embodiment of the present application;

[0047] Figure 7 A schematic diagram of a top view of a reflective film in another embodiment of the present application;

[0048] Figure 8 It is a schematic diagram of a reflective film in a first state in another embodiment of the present application;

[0049] Fig. 9 It is a schematic diagram of a reflective film in a second state according to another embodiment of the present application;

[0050] Fig.10 It is a schematic diagram of a display module in one embodiment of the present application.

[0051] Marking Description:

[0052] 100, reflective film; 101, first surface; 102, second surface; 103, accommodating cavity;

[0053] 11. conductive circuit; 111. first circuit; 112. second circuit;

[0054] 12. particle aggregation part; 121. first aggregation part; 122. second aggregation part;

[0055] 131. a first connecting line; 132. a second connecting line;

[0056] 14. pit; 141. first pit; 142. second pit;

[0057] 15. Charged particles; 151. Positively charged particles; 152. Negatively charged particles;

[0058] 200. Display panel. DETAILED DESCRIPTION

[0059] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific embodiments and with reference to the accompanying drawings.

[0060] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be the usual meanings understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not represent any order, quantity or importance, but are only used to distinguish different components. "Including" or "comprising" and similar words mean that the elements or objects appearing in front of the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0061] At present, display screens have been widely used in entertainment, education and other fields. In entertainment scenarios, such as watching high-definition videos or playing games indoors, the display screen needs to have a high-definition display effect; in learning and education scenarios, such as when used by children, especially when reading text content, the display screen needs to have an eye-protecting frosted effect. When using a frosted screen in a strong light environment, it can reduce eye fatigue and provide a more comfortable viewing experience. However, the display effect of existing display devices is either high-definition or frosted, and the two cannot be converted. Therefore, it is difficult for existing technologies to meet the display needs of both high-definition and frosted effects.

[0062] Based on this, the present application provides a reflective film, a display module and a display device solution to solve the above problems.

[0063] Please refer to Figures 1 to 9As shown, an embodiment of the present application provides a reflective film 100, which includes a first surface 101 and a second surface 102 arranged opposite to each other, and a receiving cavity 103 located between the first surface 101 and the second surface 102, and a charged particle 15 is arranged in the receiving cavity 103. The reflective film 100 also includes a particle gathering portion 12, and the number of the particle gathering portions 12 is multiple. Specifically, the charged particles 15 can be transparent charged particles, such as plastic powder or glass particles with electric charge. The film layer where the first surface 101 and the second surface 102 are located is a deformable flexible film.

[0064] In one embodiment, a plurality of particle aggregation parts 12 are respectively disposed on the first surface 101 and the second surface 102. In the first state, there is no voltage difference between the first surface 101 and the second surface 102. In the second state, there is a voltage difference between the first surface 101 and the second surface 102, so that the charged particles 15 are concentrated in each particle aggregation part 12. Due to the interaction between the particle aggregation part 12 and the charged particles 15, the particle aggregation part 12 is deformed, so that the roughness of the first surface 101 in the second state is greater than the roughness of the first surface 101 in the first state, and at the same time, the roughness of the second surface 102 in the second state is greater than the roughness of the second surface 102 in the first state.

[0065] In another embodiment, a plurality of particle aggregation parts 12 are disposed on one of the first surface 101 and the second surface 102. In the first state, there is no voltage difference between the first surface 101 and the second surface 102. In the second state, there is a voltage difference between the first surface 101 and the second surface 102, so that the charged particles 15 are concentrated in each particle aggregation part 12. Due to the interaction between the particle aggregation part 12 and the charged particles 15, the particle aggregation part 12 is deformed, so that the roughness of the first surface 101 or the second surface 102 where the particle aggregation part 12 is located in the second state is greater than that in the first state.

[0066] The reflective film 100 provided in the embodiment of the present application is provided with charged particles 15 in the accommodating cavity 103, and a plurality of particle aggregation portions 12 are provided on the first surface 101 and / or the second surface 102. When there is no voltage difference between the first surface 101 and the second surface 102, the charged particles 15 in the accommodating cavity 103 are mixed and suspended more evenly, and the first surface 101 and the second surface 102 remain flat due to being free from force, thereby forming a mirror effect. The reflective film 100 is located on the light-emitting side of the display panel 200, and the emitted light of the display panel 200 is basically not affected, so that a high-definition mirror display effect can be presented, and a clearer picture can be displayed, which is suitable for audio and video entertainment mode.

[0067] When there is a voltage difference between the first surface 101 and the second surface 102, an electric field can be formed. Under the action of the electric field, the charged particles 15 are attracted by the particle aggregation parts 12 with opposite charges, so that the charged particles 15 are concentrated in each particle aggregation part 12, and the particle aggregation part 12 is pulled and squeezed to deform, thereby forming an uneven structure at the position where the particle aggregation part 12 is located on the first surface 101 and / or the second surface 102, so that at least one surface of the reflective film 100 becomes an uneven frosted surface, which can not only diffusely reflect external light, but also produce a scattering effect on the outgoing light of the display panel 200, so that the light is diffused in all directions, the display is softer and more uniform, glare and visual fatigue are avoided, visual comfort is improved, and it is suitable for text reading mode.

[0068] Among them, the mirror effect means that the surface has a high degree of flatness and a low degree of roughness, so that the light can be reflected at a more regular angle, thus presenting a high-definition display effect. The frosted surface is achieved by forming a certain degree of roughness on the surface. When light hits the frosted surface, diffuse reflection occurs, and the light is scattered in all directions, which can reduce glare and reflection. This application uses a variable reflective film design to achieve the switching of surface roughness and flatness after applying an electric field, thereby achieving the conversion between frosted and mirror effects, which can take into account the use requirements of different application scenarios.

[0069] Reference Figure 2 , Figure 3 , Figure 4 As shown, in one embodiment, the charged particles 15 include positively charged particles 151 and negatively charged particles 152. The reflective film includes a conductive circuit 11, the conductive circuit 11 includes a first circuit 111 disposed on the first surface 101 and a second circuit 112 disposed on the second surface 102, and the particle gathering portion 12 includes a plurality of first gathering portions 121 disposed on the first circuit 111, and a plurality of second gathering portions 122 disposed on the second circuit 112. In the second state, the first circuit 111 and the second circuit 112 have a voltage difference after being energized, generating an electric field. Under the action of the electric field, the positively charged particles 151 and the first gathering portion 121 attract each other, forming a first pit 141 on the first surface 101 to accommodate the first gathering portion 121; the negatively charged particles 152 and the second gathering portion 122 attract each other, forming a second pit 142 on the second surface 102 to accommodate the second gathering portion 122.

[0070] Among them, a first circuit 111 is set on the first surface 101, and a second circuit 112 is set on the second surface 102. In the second state, the first circuit 111 and the second circuit 112 are energized at the same time to form a capacitor, thereby forming an electric field between the first surface 101 and the second surface 102. For example, the first circuit 111 can be connected to the negative electrode of the power supply, and the second circuit 112 can be connected to the positive electrode of the power supply. In this way, the positively charged particles 151 are concentrated at each first gathering part 121, and the negatively charged particles 152 are concentrated at each second gathering part 122, thereby forming a first pit 141 and a second pit 142 on the first surface 101 and / or the second surface 102, respectively, so that each surface of the reflective film 100 becomes a rough and flat frosted surface, thereby enhancing the diffuse reflection and scattering effects, and further improving the visual comfort.

[0071] Specifically, the conductive circuit 11 is a metal circuit, which has good conductivity to form a voltage difference. The first gathering portion 121 and the second gathering portion 122 are made of elastic conductive material, which has a certain flexibility to adapt to deformation.

[0072] Preferably, the first gathering parts 121 are arranged in an array on the first surface 101. The first gathering parts 121 arranged in an array form first pits 141 arranged in an array on the first surface 101, so that the first surface 101 forms a relatively uniform frosted surface, thereby improving the display effect in the second state.

[0073] Preferably, the second gathering parts 122 are arranged in an array on the second surface 102. The second gathering parts 122 arranged in an array form second pits 142 arranged in an array on the second surface 102, so that the second surface 102 forms a relatively uniform frosted surface, thereby improving the display effect in the second state.

[0074] Reference Figure 3 , Figure 4 As shown, in one embodiment, the orthographic projection of the first gathering portion 121 on the second surface 102 does not overlap with the orthographic projection of the second gathering portion 122 on the second surface 102, wherein, by staggered arrangement of the particle gathering portions on the first surface 101 and the second surface 102, the effective area of ​​the reflective film 100 for scattering light emitted from the screen accounts for a larger proportion, and the frosted effect is more delicate.

[0075] Reference Figure 4As shown, in one embodiment, the first circuit 111 includes a first connecting line 131 electrically connecting a plurality of first gathering parts 121, and the plurality of first gathering parts 121 and the first connecting line 131 form a first circuit pattern. The second circuit 112 includes a second connecting line 132 electrically connecting a plurality of second gathering parts 122, and the plurality of second gathering parts 122 and the second connecting line 132 form a second circuit pattern. Among them, the plurality of first gathering parts 121 are connected in series through the first connecting line 131, and the plurality of second gathering parts 122 are connected in series through the second connecting line 132. The first connecting line 131 and the second connecting line 132 can be connected to the positive and negative poles of the same power supply, and a switch can be set in the circuit so that each first gathering part 121 and each second gathering part 122 can be powered and discharged synchronously, which is convenient for control.

[0076] Preferably, the first circuit pattern and the second circuit pattern have the same shape.

[0077] Preferably, the first circuit pattern and the second circuit pattern are completely identical. Specifically, the first circuit 111 and the second circuit 112 have the same routing shape, and the number and size of the first gathering parts 121 and the second gathering parts 122 are the same, so as to form a relatively uniform frosted surface.

[0078] Specifically, the side edge of the first circuit pattern in the first direction (X direction in the figure) is staggered with the side edge of the second circuit pattern in the first direction, and the side edge of the first circuit pattern in the second direction (Y direction in the figure) is staggered with the side edge of the second circuit pattern in the second direction; wherein the second direction is perpendicular to the first direction. The first circuit pattern and the second circuit pattern are staggered so that the projections of the particle aggregation parts on the first surface 101 and the second surface 102 on the same plane do not overlap, that is, the first aggregation part 121 and the second aggregation part 122 are staggered, so that the pit structure distribution on the two frosted surfaces is more uniform.

[0079] like Figure 4 As shown, preferably, the first circuit pattern and the second circuit pattern are in a "bow" shape.

[0080] In other embodiments, the first circuit pattern and the second circuit pattern may also be in an S-shape or a zigzag shape.

[0081] Reference Figure 5 , Figure 6 , Figure 7As shown, in another embodiment, the charged particles 15 include positively charged particles 151, the particle gathering portion 12 is arranged in the conductive circuit 11, and the conductive circuit 11 is arranged on the first surface 101; wherein, in the second state, the conductive circuit 11 is energized, so that there is a voltage difference between the first surface 101 and the second surface 102, the positively charged particles 151 and the particle gathering portion 12 attract each other, and a pit 14 for accommodating the particle gathering portion 12 is formed on the first surface 101 corresponding to the conductive circuit 11.

[0082] In the present embodiment, energizing the conductive circuit 11 specifically refers to forming a lower potential of the conductive circuit 11 on the first surface 101 relative to the second surface 102, so that the direction of the electric field between the first surface 101 and the second surface 102 is from the second surface 102 to the first surface 101, so that the particle aggregation portion 12 attracts the positively charged particles 151, thereby forming a pit 14 on the first surface 101.

[0083] Preferably, the particle gathering parts 12 are arranged in an array on the first surface 101. The particle gathering parts 12 arranged in an array form the pits 14 arranged in an array on the first surface 101, thereby forming a relatively uniform frosted surface.

[0084] In another embodiment, the charged particles 15 include positively charged particles 151, and the conductive circuit 11 is disposed on the second surface 102; wherein, in the second state, the conductive circuit 11 is energized, the positively charged particles 151 and the particle aggregation portion 12 attract each other, and a pit 14 for accommodating the particle aggregation portion 12 is formed on the second surface 102 corresponding to the conductive circuit 11. In this embodiment, energizing the conductive circuit 11 specifically refers to forming a lower potential in the conductive circuit 11 on the second surface 102 relative to the first surface 101, so that the direction of the electric field between the first surface 101 and the second surface 102 is from the first surface 101 to the second surface 102, so that the particle aggregation portion 12 attracts the positively charged particles 151, thereby forming a pit 14 on the second surface 102.

[0085] Preferably, the particle gathering parts 12 are arranged in an array on the second surface 102. The particle gathering parts 12 arranged in an array form array-arranged pits 14 on the second surface 102, thereby forming a relatively uniform frosted surface.

[0086] Reference Figure 7 , Figure 8 , Fig. 9As shown, in another embodiment, the charged particles 15 include negatively charged particles 152, and the conductive circuit 11 is disposed on the second surface 102; wherein, in the second state, the conductive circuit 11 is energized, the negatively charged particles 152 and the particle gathering portion 12 attract each other, and a pit 14 for accommodating the particle gathering portion 12 is formed on the second surface 102 corresponding to the conductive circuit 11. In this embodiment, energizing the conductive circuit 11 specifically refers to forming a higher potential in the conductive circuit 11 on the second surface 102 relative to the first surface 101, so that the direction of the electric field between the first surface 101 and the second surface 102 is from the second surface 102 to the first surface 101, so that the particle gathering portion 12 attracts the negatively charged particles 152, thereby forming a pit 14 on the second surface 102.

[0087] Preferably, the particle gathering parts 12 are arranged in an array on the second surface 102. The particle gathering parts 12 arranged in an array form array-arranged pits 14 on the second surface 102, thereby forming a relatively uniform frosted surface.

[0088] In another embodiment, the charged particles 15 include negatively charged particles 152, and the conductive circuit 11 is disposed on the first surface 101; wherein, in the second state, the conductive circuit 11 is energized, the negatively charged particles 152 and the particle aggregation portion 12 attract each other, and a pit 14 for accommodating the particle aggregation portion 12 is formed on the first surface 101 corresponding to the conductive circuit 11. In this embodiment, energizing the conductive circuit 11 specifically refers to forming a higher potential in the conductive circuit 11 on the first surface 101 relative to the second surface 102, so that the direction of the electric field between the first surface 101 and the second surface 102 is from the first surface 101 to the second surface 102, so that the particle aggregation portion 12 attracts the negatively charged particles 152, thereby forming a pit 14 on the first surface 101.

[0089] Preferably, the particle gathering parts 12 are arranged in an array on the first surface 101. The particle gathering parts 12 arranged in an array form the pits 14 arranged in an array on the first surface 101, thereby forming a relatively uniform frosted surface.

[0090] In one embodiment, the reflective film 100 is a flexible film as a whole, which is easily deformed by force. Under the action of the electric field, the charged particles 15 in the accommodating cavity 103 will adsorb the particle aggregation part 12 located on the surface of the reflective film, causing the surface of the reflective film to deform in the direction of the accommodating cavity 103, forming concave points on the surface, thereby turning the corresponding surface into an uneven diffuse reflective frosted surface.

[0091] In another embodiment, the reflective film 100 includes a plurality of superimposed film layers, the film layers where the first surface 101 and the second surface 102 are located are flexible films, which are respectively arranged on two opposite sides of the reflective film 100, and the accommodating cavity 103 is arranged in the middle film layer.

[0092] like Figure 4 , Figure 7 As shown, in one embodiment, the particle gathering part 12 is made of elastic conductive material, which has a certain flexibility to adapt to deformation, for example, copper (Cu) and its alloys, aluminum (Al) and its alloys, silver (Ag) nanowires, etc. The metal lines made of these materials can effectively conduct current to form a voltage difference when the variable reflective film is working, and can use their own flexibility to adapt to the deformation when the film surface is deformed, thereby realizing the switching of the screen display effect.

[0093] Preferably, the particle gathering part 12 is circular in shape. The charged particles 15 are attracted to the circular particle gathering part 12, thereby forming spherical pits 14 on the surface of the reflective film 100, and the frosted surface has a more uniform scattering or reflection effect on light. Specifically, the particle gathering part 12 is made of a circular metal plate.

[0094] In one embodiment, the charged particles 15 are transparent charged particles, which can adsorb the particle aggregation part 12 in the electric field and avoid affecting the light transmission effect.

[0095] Preferably, the accommodating cavity 103 is filled with a transparent fluid medium.

[0096] In the first state, the positively charged particles 151 and the negatively charged particles 152 are mixed together and suspended in the fluid medium in the containing chamber 103 .

[0097] In another embodiment, the containing chamber 103 is configured as a vacuum chamber.

[0098] It should be noted that when the number of positively charged particles 151 and the number of negatively charged particles 152 are substantially the same and their distribution is uniform, the positively charged particles 151 and the negatively charged particles 152 can be in a relatively stable mixed state.

[0099] In the second state, an electric field is applied externally, and under the action of the electric field, the positively charged particles 151 and the negatively charged particles 152 move in opposite directions according to the direction of the electric field.

[0100] Based on the same inventive concept, another embodiment of the present application further discloses a display module, such as Fig.10 As shown, the display module includes the reflective film 100 and the display panel 200 in the above embodiment, and the reflective film 100 is located on the light emitting side of the display panel 200 .

[0101] A display module provided in this embodiment has a reflective film 100, which can switch between a first state and a second state according to whether the conductive circuit 11 is energized by arranging charged particles 15 in the accommodating cavity 103 and arranging a conductive circuit 11 on the first surface 101 and / or the second surface 102. It can not only present a high-definition display effect, but also switch at least one surface to a frosted surface, thereby switching to a frosted display effect, taking into account the usage requirements of different application scenarios.

[0102] Based on the same inventive concept, another embodiment of the present application further discloses a display device, which includes the display module in the above embodiment. Further, the display device includes a mobile phone, VR equipment, computer, television, car display equipment, etc.

[0103] A display device provided in this embodiment has a reflective film 100, which can switch between a first state and a second state according to whether the conductive circuit 11 is energized by arranging charged particles 15 in the accommodating cavity 103 and arranging a conductive circuit 11 on the first surface 101 and / or the second surface 102. It can not only present a high-definition display effect, but also switch at least one surface to a frosted surface, thereby switching to a frosted display effect, taking into account the usage requirements of different application scenarios.

[0104] Although the present application has been described in conjunction with specific embodiments thereof, many alternatives, modifications and variations of these embodiments will be apparent to those skilled in the art in light of the foregoing description.

[0105] It should be noted that the above describes some embodiments of the present application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in an order different from that in the above embodiments and still achieve the desired results. In addition, the processes depicted in the accompanying drawings do not necessarily require the specific order or continuous order shown to achieve the desired results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0106] The embodiments of the present application are intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the embodiments of the present application should be included in the scope of protection of the present application.

Claims

1. A reflective film, characterized in that: include: a first surface; a second surface, the second surface being arranged opposite to the first surface; a containing cavity, the containing cavity being located between the first surface and the second surface, and having charged particles arranged in the containing cavity; A plurality of particle gathering parts, wherein the plurality of particle gathering parts are arranged on the first surface and / or the second surface; wherein, in a first state, there is no voltage difference between the first surface and the second surface; In the second state, there is a voltage difference between the first surface and the second surface, the charged particles are concentrated in each particle gathering part, and the roughness of the first surface and / or the second surface where the particle gathering part is located in the second state is greater than that in the first state.

2. The reflective film according to claim 1, characterized in that The charged particles include positively charged particles and negatively charged particles; The first surface is provided with a first circuit, the second surface is provided with a second circuit, the particle gathering portion includes a first gathering portion and a second gathering portion, a plurality of the first gathering portions are provided in the first circuit, and a plurality of the second gathering portions are provided in the second circuit; In the second state, a voltage difference is generated between the first circuit and the second circuit, the first surface forms a first recess for accommodating the first gathering portion, and the second surface forms a second recess for accommodating the second gathering portion; Preferably, the first gathering parts are arranged in an array on the first surface; Preferably, the second gathering portions are arranged in an array on the second surface.

3. The reflective film according to claim 1, characterized in that The charged particles include positively charged particles or negatively charged particles; The first surface or the second surface is provided with a conductive circuit, and the particle gathering part is provided in the conductive circuit; in the second state, there is a voltage difference between the first surface or the second surface where the particle gathering part is located and another surface, and a pit is formed on the first surface or the second surface where the particle gathering part is located, and the particle gathering part is located in the pit; Preferably, the particle aggregation parts are arranged in an array on the first surface or the second surface.

4. The reflective film according to claim 2, characterized in that An orthographic projection of the first focusing portion on the second surface does not overlap with an orthographic projection of the second focusing portion on the second surface.

5. The reflective film according to claim 2, characterized in that The first circuit includes a first connecting line, and the first connecting line connects a plurality of the first gathering portions to form a first circuit pattern; The second circuit includes a second connecting line, and the second connecting line connects a plurality of the second gathering portions to form a second circuit pattern; Preferably, the first circuit pattern and the second circuit pattern have the same shape; Preferably, the first circuit pattern and the second circuit pattern are completely identical; Preferably, the shapes of the first circuit pattern and the second circuit pattern include at least one of an S-shape, a bow-shape or a zigzag shape.

6. The reflective film according to claim 1, characterized in that The reflective film is a flexible film; And / or, the reflective film includes a plurality of superimposed film layers, and the film layers where the first surface and the second surface are located are flexible films.

7. The reflective film according to claim 1, characterized in that The particle gathering portion includes an elastic conductive material; Preferably, the particle aggregation portion is circular in shape; Preferably, the particle gathering portion comprises a metal plate.

8. The reflective film according to claim 1, characterized in that The charged particles include transparent particles; Preferably, the accommodating cavity is filled with a transparent fluid medium; Preferably, the accommodating chamber is configured as a vacuum chamber.

9. A display module, characterized in that: It comprises the reflective film as described in any one of claims 1 to 8; the display module also comprises a display panel, and the reflective film is located on the light emitting side of the display panel.

10. A display device, characterized in that: Comprising the display module as claimed in claim 9.

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