Display device

Abstract

A display device is provided. The display device comprises: a back plate; a plastic frame connected to the back plate; a backlight module arranged on the back plate, the backlight module being configured to emit light; a privacy film arranged on the light-emitting side of the backlight module; and a dimming film arranged on the side of the privacy film away from the back plate, the dimming film being configured to be able to adjust the viewing angle of the display device, wherein the plastic frame comprises a first surface and a side end surface, the first surface of the plastic frame being a surface of the plastic frame close to the dimming film and opposite to the light-emitting surface of the dimming film, the side end surface of the plastic frame being a side surface located at one end of the plastic frame close to the dimming film, the plastic frame further comprising a chamfered portion located at a transition position between the side end surface of the plastic frame and the first surface of the plastic frame, the chamfered portion having a rough surface for scattering light incident on the chamfered portion.

Description

Technical Field

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

[0002] With the development of display technology, more and more people will carry mobile display devices to read, study or work in public places. In order to effectively protect business secrets and personal privacy, the display device needs to have an anti-peeping mode. In the anti-peeping mode, the viewing angle of the display device is small. At the same time, in some cases, the display device is also required to have a sharing mode. In the sharing mode, the viewing angle of the display device is larger, allowing multiple people to watch the content on the display screen together. In this way, a display device with the function of switching between anti-peeping mode and sharing mode is particularly important. However, in the current display devices with the function of switching between anti-peeping mode and sharing mode, there are many undesirable phenomena, which have an adverse effect on the display effect and cannot meet the user's usage needs. Summary of the invention

[0003] In order to solve at least one aspect of the above problems, the present disclosure provides a display device, including:

[0004] Back panel;

[0005] A rubber frame connected to the back panel;

[0006] A backlight module disposed on the back panel, wherein the backlight module is configured to emit light;

[0007] An anti-peep film disposed on the light-emitting side of the backlight module; and

[0008] A dimming sheet is arranged on a side of the privacy film away from the back plate, and the dimming sheet is configured to adjust the viewing angle of the display device.

[0009] Wherein, the rubber frame includes a first surface and a side end surface, the first surface of the rubber frame is the surface of the rubber frame close to the dimming plate and opposite to the light emitting surface of the dimming plate, the side end surface of the rubber frame is the side surface located at one end of the rubber frame close to the dimming plate, and the rubber frame also includes a chamfered portion located at the transition position between the side end surface of the rubber frame and the first surface of the rubber frame, and the chamfered portion has a rough surface for dispersing light incident on the chamfered portion.

[0010] According to some exemplary embodiments, the display device further includes a flexible circuit board, the flexible circuit board including a flexible circuit board body, a first contact portion and a second contact portion disposed on the flexible circuit board body,

[0011] The dimming plate includes a first electrode and a second electrode, wherein the first electrode and the second electrode are electrically in contact with the first contact portion and the second contact portion respectively.

[0012] The dimming plate includes a first side surface close to the flexible circuit board, the first electrode includes a first electrode portion and a second electrode portion, the second electrode portion and the first electrode portion are respectively located on both sides of the first side surface in a direction perpendicular to the first side surface, and the first electrode portion protrudes toward the flexible circuit board relative to the first side surface; the second electrode includes a third electrode portion and a fourth electrode portion, the third electrode portion and the fourth electrode portion are respectively located on both sides of the first side surface in a direction perpendicular to the first side surface, and the third electrode portion protrudes toward the flexible circuit board relative to the first side surface.

[0013] According to some exemplary embodiments, the dimming film includes:

[0014] A first substrate and a second substrate arranged opposite to each other;

[0015] A first conductive layer disposed on a side of the first substrate close to the second substrate;

[0016] a second conductive layer disposed on a side of the second substrate close to the first substrate; and

[0017] a dimming function layer disposed between the first conductive layer and the second conductive layer,

[0018] Among them, the first electrode is located on the surface of the first conductive layer close to the dimming functional layer, the second electrode is located on the surface of the second conductive layer close to the dimming functional layer, the first contact portion is located on the surface of the flexible circuit board body facing the first conductive layer, and the second contact portion is located on the surface of the flexible circuit board body facing the second conductive layer.

[0019] According to some exemplary embodiments, the display device further includes a light blocking component disposed on at least one of the back plate, the plastic frame, and the dimming film.

[0020] According to some exemplary embodiments, the dimming film includes a side end surface close to the glue frame, the light blocking component includes a first shading component arranged on the first surface of the glue frame, the first shading component includes a first shading sub-component and a second shading sub-component, the first shading sub-component covers at least a portion of the first surface of the glue frame, and the second shading sub-component covers at least a portion of the side end surface of the dimming film.

[0021] According to some exemplary embodiments, the first light-shielding subcomponent extends parallel to the light-emitting surface of the dimming film, and the second light-shielding subcomponent extends perpendicular to the light-emitting surface of the dimming film.

[0022] According to some exemplary embodiments, the light blocking component includes a second light shielding component disposed on at least one of a first surface of the plastic frame and a side surface of the back plate close to the dimming film.

[0023] According to some exemplary embodiments, the second light shielding member includes black foam.

[0024] According to some exemplary embodiments, the light blocking member includes a third light shielding member disposed on a side end surface of the dimming sheet.

[0025] According to some exemplary embodiments, the third light-shielding component includes black ink; or, the third light-shielding component includes a frame-sealing adhesive, and the frame-sealing adhesive is disposed between the first conductive layer and the second conductive layer to encapsulate the dimming function layer.

[0026] According to some exemplary embodiments, the light blocking component includes a fourth light shielding component disposed on the light emitting surface of the dimming film, and the orthographic projection of the fourth light shielding component on the back plate falls within the orthographic projection of the glue frame on the back plate.

[0027] According to some exemplary embodiments, each of the first light shielding member and the fourth light shielding member includes a black adhesive strip.

[0028] According to some exemplary embodiments, the backlight module includes a plurality of optical film layers, and the orthographic projection of at least one of the plurality of optical film layers and the anti-peep film on the back panel covers the orthographic projection of the dimming film on the back panel, and the area of ​​the orthographic projection of at least one of the plurality of optical film layers and the anti-peep film on the back panel is larger than the area of ​​the orthographic projection of the dimming film on the back panel.

[0029] According to some exemplary embodiments, the privacy film includes a first surface close to the backlight module and a second surface close to the dimming film, and at least one of the first surface of the privacy film and the second surface of the privacy film is a rough surface.

[0030] According to some exemplary embodiments, the display device further includes a polarizing plate located on a side of the dimming plate away from the privacy film, and a surface of the polarizing plate close to the dimming plate is a rough surface.

[0031] According to some exemplary embodiments, the dimming plate further includes: anti-adsorption particles disposed on a surface of the dimming plate close to the privacy film; and anti-adsorption particles disposed on a surface of the dimming plate close to the polarizer.

[0032] According to some exemplary embodiments, the area of ​​the orthographic projection of the first electrode portion on the first substrate is less than or equal to the area of ​​the orthographic projection of the second electrode portion on the first substrate; and / or the area of ​​the orthographic projection of the third electrode portion on the second substrate is less than or equal to the area of ​​the orthographic projection of the fourth electrode portion on the second substrate.

[0033] According to some exemplary embodiments, the width of the first electrode portion in a direction perpendicular to the first side of the dimming film is less than or equal to the width of the second electrode portion in a direction perpendicular to the first side of the dimming film; and / or the width of the third electrode portion in a direction perpendicular to the first side of the dimming film is less than or equal to the width of the fourth electrode portion in a direction perpendicular to the first side of the dimming film.

[0034] According to some exemplary embodiments, the length of the first electrode portion in a direction parallel to the first side of the dimming film is less than or equal to the length of the second electrode portion in a direction parallel to the first side of the dimming film; and / or the length of the third electrode portion in a direction parallel to the first side of the dimming film is less than or equal to the length of the fourth electrode portion in a direction parallel to the first side of the dimming film.

[0035] According to some exemplary embodiments, the length of the first electrode in a direction parallel to the first side of the dimming film is 3 to 10 times the width of the first electrode in a direction perpendicular to the first side of the dimming film; and / or the length of the second electrode in a direction parallel to the first side of the dimming film is 3 to 10 times the width of the second electrode in a direction perpendicular to the first side of the dimming film.

[0036] According to some exemplary embodiments, a ratio of an area of ​​an orthographic projection of the first electrode portion on the first substrate to an area of ​​an orthographic projection of the second electrode portion on the first substrate is and / or, the ratio of the area of ​​the orthographic projection of the third electrode portion on the second substrate to the area of ​​the orthographic projection of the fourth electrode portion on the second substrate is within a range of within the range.

[0037] According to some exemplary embodiments, a side where the orthographic projection of the first electrode on the first substrate is close to the orthographic projection of the second electrode on the first substrate coincides with a side where the orthographic projection of the second electrode on the first substrate is close to the orthographic projection of the first electrode on the first substrate.

[0038] According to some exemplary embodiments, an orthographic projection of the first electrode on the first substrate is spaced apart from an orthographic projection of the second electrode on the first substrate by a specified distance.

[0039] According to some exemplary embodiments, the prescribed distance is greater than or equal to 40 mm.

[0040] According to some exemplary embodiments, the first conductive layer further includes a notch portion, and the notch portion of the first conductive layer is recessed relative to the first side surface of the dimming sheet.

[0041] According to some exemplary embodiments, the second conductive layer further includes a notch portion, and the notch portion of the second conductive layer is recessed relative to the first side surface of the dimming sheet.

[0042] According to some exemplary embodiments, the first substrate includes a notch, and an orthographic projection of the notch of the first conductive layer on the first substrate and an orthographic projection of the second electrode on the first substrate coincide with the notch of the first substrate.

[0043] According to some exemplary embodiments, the second substrate includes a notch, and an orthographic projection of the notch of the second conductive layer on the second substrate and an orthographic projection of the first electrode on the second substrate coincide with the notch of the second substrate.

[0044] According to some exemplary embodiments, the dimming function layer includes a notch portion, and an orthographic projection of the notch portion of the dimming function layer on the first substrate covers an orthographic projection of the first electrode on the first substrate and an orthographic projection of the second electrode on the first substrate.

[0045] According to some exemplary embodiments, each of the first conductive layer and the second conductive layer includes a planar electrode, a grid electrode, a ring electrode, or a strip electrode. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Other objects and advantages of the present disclosure will be apparent from the following description of the present disclosure with reference to the accompanying drawings, and will help to have a comprehensive understanding of the present disclosure.

[0047] Figure 1 is a schematic diagram of the structure of a display device in the related art;

[0048] Figure 2 The side bright strip phenomenon of a display device in the related art is schematically shown;

[0049] Figure 3 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0050] Figure 4is a schematic structural diagram of an anti-peep film according to an embodiment of the present disclosure;

[0051] Figure 5 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0052] Figure 6 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0053] Figure 7 is a schematic structural diagram of a dimming film according to an embodiment of the present disclosure;

[0054] Figure 8 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0055] Fig. 9 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0056] Fig.10 is a schematic plan view of an anti-peep film according to an embodiment of the present disclosure;

[0057] Fig.11 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0058] Fig.12 is a schematic structural diagram of a display device according to an embodiment of the present disclosure;

[0059] Fig.13 The cause of the rainbow phenomenon in a display device in the related art is schematically shown;

[0060] Fig.14 The contact surface between the privacy film and the dimming sheet according to an embodiment of the present disclosure is schematically shown;

[0061] Fig.15 is a schematic plan view of a dimming sheet according to an embodiment of the present disclosure;

[0062] Fig.16 is an exploded view of a dimming sheet according to an embodiment of the present disclosure;

[0063] Fig.17 The dimming sheet according to the disclosed embodiment is Fig.15 A cross-sectional view taken along line AA';

[0064] Fig.18 The dimming sheet according to the disclosed embodiment is Fig.15 A cross-sectional view taken along line BB';

[0065] Fig.19 is a schematic plan view of a dimming sheet according to other embodiments of the present disclosure;

[0066] Fig. 20 is a schematic plan view of a dimming sheet according to some other embodiments of the present disclosure;

[0067] Fig.21 is an exploded view of a dimming sheet according to some other embodiments of the present disclosure; and

[0068] Fig. 22 is a flow chart of a method for manufacturing a dimming sheet according to an embodiment of the present disclosure.

[0069] It should be noted that, for the sake of clarity, in the drawings used to describe the embodiments of the present disclosure, the sizes of layers, structures or regions may be enlarged or reduced, that is, these drawings are not drawn according to the actual scale. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiments of the present disclosure clearer, the technical solution of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, not all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0071] Unless otherwise defined, the technical terms or scientific terms used in the present disclosure should be understood by ordinary technicians in the field. The "first", "second" and similar words used in the present disclosure do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and other similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "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.

[0072] In this article, an XYZ coordinate system is established to facilitate the description of the relative positional relationship between various layers, components, elements or members. Unless otherwise specified, in the dimming film, dimming film assembly, backlight module and display device according to the embodiments of the present disclosure, the Z direction refers to the direction perpendicular to the substrate of the dimming film, or in other words, the Z direction refers to the stacking direction of the layers of the dimming film; the X direction refers to the direction in which the long sides of the layers of the dimming film extend, and the Y direction refers to the direction in which the short sides of the layers of the dimming film extend, that is, the layers of the dimming film extend in the XY plane.

[0073] In this article, the expression "rough surface" means a surface with a certain surface roughness. Generally, surface roughness refers to the unevenness of the surface with small spacing and tiny peaks and valleys, and the distance (wave distance) between two peaks or two valleys is very small (below 1mm), which belongs to the microscopic geometric shape error. It should be understood that the smaller the surface roughness, the smoother the surface. Unless otherwise specified, in this article, the expression "rough surface" is distinguished from a smooth surface, and it refers to a surface with a surface roughness greater than 0.1μm.

[0074] Figure 1 Schematic diagram of the structure of a display device in the related art. Figure 1 As shown, the display device 100 may include a back plate 101, a plastic frame 102, a light source 103, a reflective sheet 104, a light guide plate 105, an optical film layer including a diffuser 106, a privacy film 107, a dimming sheet 108 and other components. Through the cooperation of the privacy film 107 and the dimming sheet 108, the display device 100 can switch between the privacy mode and the sharing mode. When the display device 100 is in the privacy mode, the dimming sheet 108 is in a transparent state; when the display device 100 is in the sharing mode, the dimming sheet 108 is in a foggy state.

[0075] However, in the actual display process, the display device 100 is prone to form side bright lines, such as Figure 2 As shown, thus affecting the display effect. In particular, when the display device 100 is in the anti-peeping mode, the dimming film 108 is in a transparent state, and the display screen observed at a wide viewing angle should appear black. However, due to the existence of the side bright line, the display screen observed at a wide viewing angle includes the side bright line, thereby affecting the display effect in the anti-peeping mode. The inventor has found through research that the side bright line mainly comes from two sources. One part comes from the edge light of the anti-peeping film. Specifically, referring to Figure 1 , part of the light is emitted from the edge of the privacy film 107 (mainly the side end face of the privacy film 107) and / or the edge of the dimming film 108 (mainly the side end face of the dimming film 108), and after being reflected by the back plate 101 and / or the plastic frame 102, it is emitted from the edge of the plastic frame 102 to form a bright line with a large angle, as shown by the light L1' in the figure. The other part comes from the light emitted from the slit of the privacy film. Specifically, refer to Figure 1 A portion of the light is emitted from the slit of the privacy film 107 and is reflected by the edge of the plastic frame 102 to form a bright line with a large angle, as shown by the light L2' in the figure.

[0076] In order to reduce or even eliminate the above-mentioned side bright line phenomenon, an embodiment of the present disclosure proposes a display device.

[0077] Figure 3 is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure. Figure 3As shown, the display device 10 may include a back plate 1, a plastic frame 2, a light source 3, a reflective sheet 4, a light guide plate 5, an optical film layer including a diffuser 6, an anti-peep film 7, a dimming sheet 8, a display panel 9 and other components.

[0078] Through the cooperation of the privacy film 7 and the dimming film 8 , the display device 10 can be switched between the privacy mode and the sharing mode.

[0079] like Figure 3 As shown, the light emitted from the light source 3 is directed toward the direction where the display panel 9 is located after being acted upon by the light guide plate 5, the reflective sheet 4 and the optical film layer including the diffuser 6. Figure 3 The light is ejected in the upward direction.

[0080] In this article, for the convenience of description, the module composed of the light source 3, the reflector 4, the light guide plate 5, the optical film layer including the diffuser 6, etc. is referred to as a backlight module. It should be noted that in this article, only the side-entry backlight module is taken as an example to describe the embodiment of the present disclosure in detail. However, it should be understood that the embodiment of the present disclosure is not limited to the side-entry backlight module, and can also be applied to other types of backlight modules including direct-type backlight modules. Depending on the type of the backlight module, the components included will also change accordingly. It should be understood that the backlight module is configured to emit light for the display device to display a picture.

[0081] In addition, it should be noted that the optical film layer may also include a composite brightness enhancement film, a diffusion film, a prism film and other film layers, which are not particularly limited here and can be set according to the actual use requirements of the display device.

[0082] like Figure 3 As shown, the privacy film 7, the dimming film 8 and the display panel 9 are sequentially arranged on the light-emitting side of the backlight module, that is, the privacy film 7, the dimming film 8 and the display panel 9 are arranged along the light-emitting direction of the backlight module ( Figure 3 Set them in sequence (in the direction of the center and upward).

[0083] Continue to refer to Figure 3 The privacy film 7 can be arranged on the light-emitting side of the backlight module, which allows light within a small viewing angle range (for example, light within a viewing angle of ±45°) to pass through, but does not allow light within a large viewing angle range (for example, light with a viewing angle exceeding ±45°) to pass through.

[0084] For example, Figure 4 is a schematic structural diagram of an anti-peep film according to an embodiment of the present disclosure. Figure 4The privacy film 7 may include light-blocking structures 71 disposed at intervals and light-transmitting structures 72 disposed between adjacent light-blocking structures 71. For example, the light-transmitting structures 72 may be gaps that may be left between the light-blocking structures 71 disposed at intervals, that is, the light-transmitting structures 72 may be gaps. Optionally, the gaps may be filled with transparent materials, for example, transparent colloids, that is, the light-transmitting structures 72 may be transparent material portions. Figure 4 As shown, when the light within a small viewing angle range (for example, Figure 4 When the light L1 shown in FIG. 1 enters the privacy film 7, it can be emitted through the light transmission structure 72; when the light within a large viewing angle range (for example, Figure 4 When the light L2 shown in FIG. 1 enters the privacy film 7, it is blocked by the light blocking structure 71 and cannot be emitted from the privacy film 7.

[0085] Return to reference Figure 3 The dimming sheet 8 may include a dimming function layer having an electrically controlled optical switch characteristic under the action of an electric field. For example, under the action of an electric field, the dimming function layer may be transparent, and without the action of an electric field, the dimming function layer may be foggy.

[0086] For example, the dimming film 8 may include polymer dispersed liquid crystal (PDLC for short). The so-called polymer dispersed liquid crystal refers to liquid crystal dispersed in an organic solid polymer matrix in the form of micron-sized droplets. Since the optical axis of the droplets composed of liquid crystal molecules is in a free orientation, their refractive index does not match the refractive index of the matrix. When light passes through the matrix, it is strongly scattered by the droplets and presents an opaque milky state or a translucent state (also called a foggy state). By applying an electric field to the dimming film 8, the electric field can adjust the optical axis orientation of the droplets composed of liquid crystal molecules. When the refractive index of the droplets composed of liquid crystal molecules matches the refractive index of the matrix, the layer can be transparent, that is, light can pass through the layer. Therefore, the polymer dispersed liquid crystal layer has an electrically controlled optical switching characteristic under the action of an electric field.

[0087] For another example, the dimming film 8 may include polymer network liquid crystal (PNLC for short). In PNLC, the liquid crystal is not in the form of spherical (or ellipsoidal) droplets, but is distributed in a three-dimensional polymer network to form a continuous channel network. Similar to PDLC, the PNLC layer also has an electrically controlled optical switch characteristic under the action of an electric field.

[0088] For another example, the dimming film 8 may include polymer-stabilized liquid crystal (PSLC for short). Similar to PDLC, the PSLC layer also has an electrically controlled optical switch characteristic under the action of an electric field.

[0089] It should be understood that the dimming film 8 is not limited to the above examples, and it can include any dimming functional layer having an electrically controlled optical switching characteristic under the action of an electric field.

[0090] In the display device according to the embodiment of the present disclosure, for example, when the dimming film 8 includes a PDLC layer, the electric field applied to the dimming film 8 can adjust the optical axis orientation of the small droplets composed of liquid crystal molecules. When the refractive index of the small droplets composed of liquid crystal molecules matches the refractive index of the substrate, the PDLC layer can be transparent. In this state, only part of the light emitted by the light source of the backlight module within a specified viewing angle range (for example, within ±45°) can pass through the anti-peep film 7, and this part of the light can be seen. Figure 4 The light L1 shown in the figure then passes through the dimming film 8 and the display panel 9 in a transparent state in turn, so that the viewing angle of the display device 10 is limited to the specified viewing angle range, that is, the display device 10 is in anti-peeping mode. When the electric field is stopped from being applied to the dimming film 8, the optical axis of the small droplets composed of liquid crystal molecules is in a free orientation, and its refractive index does not match the refractive index of the matrix, and the dimming film 8 is in a foggy state. In this state, although only part of the light emitted by the light source of the backlight module within the specified viewing angle range (for example, within ±45°) can pass through the anti-peeping film 7, this part of the light can be seen. Figure 4 However, after this part of the light passes through the dimming film 8 in the foggy state, it is diffused by the dimming film 8 in the foggy state to become light within a large viewing angle range, thereby expanding the viewing angle of the display device 10, that is, making the display device 10 in a sharing mode.

[0091] The display device according to the embodiment of the present disclosure may include a light scattering component, which can scatter the light emitted from the edge of the plastic frame 2. In the display device according to the embodiment of the present disclosure, by providing such a light scattering component, the light emitted from the edge of the plastic frame can be scattered, so that the above-mentioned side bright strip phenomenon can be at least alleviated.

[0092] For example, Figure 3As shown, the plastic frame 2 includes a side end face 23 close to the dimming film 8, and the light scattering component can be located at the transition position between the side end face 23 of the plastic frame 2 and the first surface 21 of the plastic frame 2. Specifically, the light scattering component includes a chamfered portion 22 located at the transition position between the side end face 23 of the plastic frame 2 and the first surface 21 of the plastic frame 2. For example, the chamfered portion 22 can be a rounded chamfered portion. The chamfered portion 22 can be sandblasted, that is, a rough surface is formed at the chamfered portion 22 to scatter the light incident on the chamfer. Specifically, at least a portion of the light emitted from at least one of the side end face of the anti-peep film 7, the side end face of the dimming film 8, and the light transmission structure 72 of the anti-peep film 7 will be directly incident or reflected to the chamfered portion 22. After the light incident on the chamfered portion 22 is reflected by the rough surface, it will be scattered in all directions, thereby achieving the purpose of scattering the light. In this way, the light emitted from at least one of the side end surface of the privacy film 7, the side end surface of the dimming sheet 8 and the light transmission structure 72 of the privacy film 7 will not be concentrated in one direction, thereby at least alleviating the above-mentioned side bright strip phenomenon.

[0093] In this article, the first surface of the rubber frame can be the surface of the rubber frame close to the dimming film and opposite to the light emitting surface of the dimming film, the side end surface of the rubber frame is the side surface located at one end of the rubber frame close to the dimming film, and the edge of the rubber frame can include a chamfered portion 22 and a portion adjacent to the chamfered portion 22.

[0094] The display device according to the embodiment of the present disclosure may further include a light blocking component, which is configured to block at least part of the light emitted from at least one of the side end surface of the privacy film 7, the partial light transmission structure of the privacy film 7, and the side end surface of the dimming sheet 8 from emitting from the display device. For example, the light blocking component may block at least part of the light emitted from at least one of the side end surface of the privacy film 7, the side end surface of the dimming sheet 8, and the partial light transmission structure 72 of the privacy film 7 from emitting through the edge of the plastic frame 2. In the display device according to the embodiment of the present disclosure, by providing such a light blocking component, the above-mentioned side bright strip phenomenon may be alleviated or even eliminated.

[0095] like Figure 5 As shown, the light blocking component may include a first light shielding component 20A disposed on the plastic frame 2. For example, the first light shielding component 20A may be a black plastic strip. The first light shielding component 20A is attached to a first surface 21 of the plastic frame 2. The first surface 21 of the plastic frame 2 is a surface of the plastic frame 2 close to the dimming film 8 ( Figure 5 The first surface 21 and the light emitting surface 89 ( Figure 5 relative to the upper surface shown in ).

[0096] Optionally, the cross section of the first light shielding member 20A in a direction perpendicular to the light emitting surface of the light modulating sheet 8 may have a T-shape. Figure 3 As shown, the first light shielding component 20A may include a first light shielding subcomponent 20A1 extending parallel to the light emitting surface of the dimming sheet 8 and a second light shielding subcomponent 20A2 extending perpendicular to the light emitting surface of the dimming sheet 8, that is, the extension direction of the second light shielding subcomponent 20A2 is perpendicular to the first light shielding subcomponent 20A1. The first light shielding subcomponent 20A1 is attached to the lower surface of the plastic frame 2, and the second light shielding subcomponent 20A2 extends from the first light shielding subcomponent 20A1 toward the dimming sheet 8. For example, the second light shielding subcomponent 20A2 can shield at least a portion of the side surface of the dimming sheet 8 close to the plastic frame 2.

[0097] It should be noted that, in this article, the light-emitting surface of the dimming film refers to the main light-emitting surface of the dimming film, that is, most of the light incident on the dimming film is emitted from the light-emitting surface of the dimming film. Figure 5 The upper surface of the dimming film 8 is its light emitting surface.

[0098] Combined with reference Figure 1 and Figure 5 The privacy film 7 includes a side end face 73 close to the plastic frame 2 and a light transmission structure 72 arranged close to the side end face of the plastic frame, and the dimming sheet 8 includes a side end face 8S close to the plastic frame 2. By providing the first light shielding component 20A, light emitted from the edge of the privacy film 7 (e.g., the side end face 73), the edge of the dimming sheet 8 (e.g., the side end face 8S) and the light transmission structure 72 of the privacy film 7 close to its side end face (e.g., the side end face 8S) can be blocked. Figure 1 The light rays L1', L2') shown in FIG. 1 are emitted through the edge of the plastic frame 2, thereby alleviating or even eliminating the above-mentioned side bright strip phenomenon.

[0099] like Figure 6 As shown, the light blocking component may include a second light shielding component 20B disposed on the plastic frame 2. For example, the second light shielding component 20B may be black foam. The second light shielding component 20B may be disposed on the first surface 21 ( Figure 6 Alternatively or additionally, the second light shielding member 20B may be disposed on the side surface ( Figure 6 on the inner surface shown in ).

[0100] It should be understood that the second light shielding member 20B can play a similar role as the first light shielding member 20A, which will not be described in detail here.

[0101] like Figure 7As shown, the light blocking component may include a third light shielding component 20C disposed on the dimming sheet 8. For example, the third light shielding component 20C may be black ink. The third light shielding component 20C may be coated on the side end surface 8S of the dimming sheet 8 close to the back plate 1 (for example, see Figure 5 By providing the third light shielding component 20C, it is possible to prevent light from being emitted from the side end surface of the dimming sheet 8, so as to reduce the amount of light emitted from the edge of the plastic frame 2, thereby at least alleviating the above-mentioned side bright strip phenomenon.

[0102] For example, the third light shielding component 20C can be formed by coating the end surface of the dimming sheet 8 with black ink. Specifically, for example, multiple (e.g., 10) dimming sheets can be stacked together, and their end surfaces can be placed in an ink cartridge filled with black ink, and then cured by UV light after the end surfaces are coated with ink. This process can not only solve the problem of side bright strips, but also avoid the delamination of the dimming sheet in a long-term high-temperature working environment.

[0103] Figure 8 Schematic diagram of the structure of the dimming film according to the embodiment of the present disclosure. Figure 8 As shown, the dimming film 8 may include: a first substrate 81 and a second substrate 82 arranged opposite to each other; a first conductive layer 83 arranged on a side of the first substrate 81 close to the second substrate 82; a second conductive layer 84 arranged on a side of the second substrate 82 close to the first substrate 81; and a dimming function layer 85 arranged between the first conductive layer 83 and the second conductive layer 84. For example, the dimming function layer 85 may be a PDLC layer.

[0104] like Figure 8 As shown, the dimming sheet 8 may further include a sealant 86, which is also disposed between the first conductive layer 83 and the second conductive layer 84, and is located in the same layer as the dimming function layer 85, and is used to encapsulate the dimming function layer 85. In addition, the sealant 86 is made of a light-blocking material (such as a black sealant), and is used to prevent light from being emitted from the side end surface of the dimming sheet 8, so as to reduce the amount of light emitted from the edge of the sealant frame 2, thereby at least alleviating the above-mentioned side bright strip phenomenon.

[0105] For example, the following process can be used to form the dimming film 8 with the frame sealant 86. First, roll-coat the liquid crystal polymer on one of the first conductive layer 83 and the second conductive layer 84 until the liquid crystal polymer layer is uniform; and use a dispensing process to make the frame sealant 86 on the other of the first conductive layer 83 and the second conductive layer 84. Then, align and assemble the two conductive layers, and use UV light curing for 5 minutes at a temperature environment of 15° to 25° to form the dimming film 8 with the frame sealant 86.

[0106] That is, the light blocking component may include a sealant 86 disposed in the dimming plate 8 , the sealant 86 and the dimming function layer 85 are located in the same layer and encapsulate the dimming function layer 85 to prevent light from emitting from the side surface of the dimming plate 8 .

[0107] like Fig. 9 As shown, the light blocking component may include a fourth light shielding component 20D disposed on the dimming sheet 8. For example, the fourth light shielding component 20D may be a black adhesive strip. The fourth light shielding component 20D may be attached to the surface of the dimming sheet 8 close to the adhesive frame 2 (i.e., the light emitting surface 89, see Figure 5 ) and is arranged at the edge of the dimming sheet 8. That is, the orthographic projection of the fourth light shielding component 20D on the back plate falls within the orthographic projection of the plastic frame 2 on the back plate. The fourth light shielding component 20D can not only prevent the light emitted from the light transmission structure 72 at the edge of the privacy film 7 from emitting from the edge of the plastic frame 2, but also eliminate the gap between the privacy film and the display panel, reducing the possibility of light emitting from the gap. In this way, the above-mentioned side bright strip phenomenon can at least be alleviated.

[0108] After further research, the inventors found that in addition to light leakage at the end surface of the dimming film 8, light leakage may also occur at the end surfaces of other film materials (such as the anti-peep film 7, the diffusion film 6, the brightness enhancement film, etc.).

[0109] For example, Fig.10 is a schematic plan view of an anti-peep film according to an embodiment of the present disclosure. Fig.10 The privacy film 7 has a grating-like structure. In order to avoid moiré between the privacy film 7 and the display panel 9, the light-blocking structure 71 and the light-transmitting structure 72 of the privacy film 7 are usually rotated at a certain angle relative to the display panel 9. For example, for computer display products, the certain angle is generally 3°-7°. Fig.10 , there are multiple obliquely extending light-transmitting structures 72 at the side end surface of the privacy film 7. As a result, part of the light may leak out from the multiple obliquely extending light-transmitting structures 72 at the side end surface of the privacy film 7 and enter the dimming sheet 8 in a transparent state, thereby aggravating the above-mentioned side bright strip phenomenon.

[0110] Fig.11 is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure. Fig.11 The display device 10 may include a back plate 1, a plastic frame 2, a light source 3, a reflective sheet 4, a light guide plate 5, an optical film layer including a diffuser 6, an anti-peep film 7, a dimming film 8, a display panel 9 and other components. For example, the optical film layer may include a diffuser 6, a brightness enhancement film 62 and the like.

[0111] In the illustrated embodiment, the dimension of the privacy film 7 perpendicular to the light emitting direction ( Fig.11The width of the privacy film 7 shown in FIG. 1 is greater than the dimension of the dimming film 8 perpendicular to the light emitting direction ( Fig.11 In other words, the orthographic projection of the privacy film 7 on the back plate 1 covers the orthographic projection of the dimming film 8 on the back plate 1, and the area of ​​the orthographic projection of the privacy film 7 on the back plate 1 is larger than the area of ​​the orthographic projection of the dimming film 8 on the back plate 1.

[0112] Optionally, since light leakage may also occur at the side end surface of the optical film layer including the diffuser 6, the brightness enhancement film 62, etc., the size of the optical film layer including the diffuser 6, the brightness enhancement film 62, etc. in the direction perpendicular to the light output direction ( Fig.11 The width of the optical film layer shown in FIG) is greater than the dimension of the dimming film 8 perpendicular to the light emitting direction ( Fig.11 In other words, the orthographic projection of the optical film layer on the back plate 1 covers the orthographic projection of the dimming film 8 on the back plate 1, and the area of ​​the orthographic projection of the optical film layer on the back plate 1 is larger than the area of ​​the orthographic projection of the dimming film 8 on the back plate 1.

[0113] By means of such an arrangement, it is possible to prevent light leaking from the side end surfaces of the anti-peep film 7 and the optical film layer from entering the dimming film 8 in a transparent state, thereby at least alleviating the above-mentioned side bright strip phenomenon.

[0114] Fig.12 is a schematic diagram of the structure of a display device according to an embodiment of the present disclosure. Fig.12 The display device 10 may include a back plate 1, a plastic frame 2, a light source 3, a reflective sheet 4, a light guide plate 5, an optical film layer including a diffuser 6, a privacy film 7, a dimming sheet 8, a display panel 9 and other components. The display device 10 may also include a polarizer 91 disposed on a side of the display panel 9 close to the dimming sheet 8.

[0115] Reference Fig.12 , the optical film layer, the privacy film 7, the dimming film 8 and the polarizing film 9 are arranged in sequence along the light emitting direction. The inventor has found through research that since the surface of each of the optical film layer, the privacy film 7, the dimming film 8 and the polarizing film 9 is a smooth surface, adsorption is easily generated between two adjacent film layers of the optical film layer, the privacy film 7, the dimming film 8 and the polarizing film 9. For example, Fig.13 The adsorption phenomenon between the privacy film 7 and the dimming film 8 is schematically shown. Fig.13As shown, since the material of the dimming sheet 8 is relatively soft, the dimming sheet 8 and the privacy film 7 will produce surface deformation after being adsorbed, thereby forming an air gap 13G of unequal thickness between the two. At this time, when the dimming sheet 8 is in a transparent state, a small angle light incident from the privacy film 7 passes through the deformation area of ​​the dimming sheet 8, and a part of the light is reflected by the lower surface of the dimming sheet 8 and the upper surface of the privacy film 7, forming interference fringes; the other part of the light passes through the dimming sheet 8. For example, Fig.13 As shown, light I is transmitted normally without interference; light II is interfered; light III is transmitted normally without interference; light IV is refracted through the air gap 13G and then passes through the dimming film 8 without interference. As a result, the display device 10 generates a rainbow pattern when displaying. It should be understood that adsorption will also occur between the optical film layer (such as a brightness enhancement film) and the anti-peep film 7 and between the dimming film 8 and the polarizer 9, thereby exacerbating the above-mentioned rainbow pattern phenomenon.

[0116] In the embodiment of the present disclosure, the surface of the privacy film 7 is subjected to atomization treatment. For example, the surface of the privacy film 7 close to the optical film layer (such as the brightness enhancement film) ( Fig.12 The lower surface in the middle) and the surface of the privacy film 7 close to the dimming film 8 ( Fig.12 The upper surface in the middle) are all rough surfaces that have been atomized, that is, the anti-peep film 7 is a double-sided anti-glare anti-peep film.

[0117] Fig.14 The contact surface between the privacy film and the dimming film according to the embodiment of the present disclosure is schematically shown. Fig.12 and Fig.14 By increasing the surface roughness (or haze) of the privacy film 7, the adsorption phenomenon between the privacy film 7 and the dimming film 8 and between the privacy film 7 and the optical film layer (such as the brightness enhancement film) can be reduced or even eliminated, thereby reducing or even eliminating the interference fringes that may be generated. In this way, the above-mentioned rainbow fringes phenomenon can be reduced or eliminated.

[0118] Similarly, the surface of the polarizing plate 91 may be subjected to a haze treatment. For example, the surface of the polarizing plate 91 close to the dimming plate 8 ( Fig.12 The lower surface in the middle is a rough surface that has been atomized. Since the haze of the polarizer 91 will affect the anti-peeping effect, after multiple tests and verifications, when the haze of the polarizer 91 is adjusted to about 1%, the above-mentioned rainbow pattern phenomenon can be effectively reduced, while ensuring that the anti-peeping viewing angle meets the user's needs (for example, the visible viewing angle is within the range of ±45°).

[0119] Optionally, in order to reduce or even eliminate the adsorption phenomenon between the dimming film 8 and the privacy film 7 and between the dimming film 8 and the polarizer 91 , anti-adsorption particles may be added on the surface of the dimming film 8 . Fig.15is a schematic diagram of the structure of a dimming film according to an embodiment of the present disclosure. Fig.15 The dimming sheet 8 further includes anti-adsorption particles 87 disposed on the surface of the dimming sheet 8 close to the privacy film 7 and anti-adsorption particles 88 disposed on the surface of the dimming sheet 8 close to the polarizer 91. By providing such anti-adsorption particles, the surface of the dimming sheet 8 close to the privacy film 7 and the surface of the dimming sheet 8 close to the polarizer 91 are both formed into rough surfaces.

[0120] For example, the material of the anti-adsorption particles may include any one of silicone, polystyrene, polycarbonate, and calcium carbonate. Of course, the anti-adsorption particles may also be made of other materials commonly used in the relevant field, and the embodiments of the present disclosure do not impose any particular restrictions on them.

[0121] It should be noted that, in order to clearly describe the embodiments of the present disclosure, Figure 3-Figure 12 The various structures of the display device provided by the embodiments of the present disclosure are described separately. It should be understood by those skilled in the art that, in the absence of conflict, the structures of the display device provided by the embodiments of the present disclosure are combined. Figure 3-Figure 12 The various structures of the display device provided by the embodiments of the present disclosure described separately can be freely combined, for example, Figure 3 The structure shown in Figure 5 , Figure 6 , Figure 7 , Fig. 9 , Fig.11 , Fig.12 Any one, multiple or all combinations of the structures shown in Figure 5 The structure shown in Figure 7 , Fig. 9 , Fig.11 , Fig.12 Any, multiple or all combinations of the structures shown in. It should be understood that various embodiments freely combined without conflict also fall within the scope of the present disclosure.

[0122] Hereinafter, the structure of the dimming film according to the embodiment of the present disclosure and the connection structure between the dimming film and the flexible circuit board will be described in detail with reference to the accompanying drawings.

[0123] Fig.15 is a schematic plan view of a dimming sheet according to an embodiment of the present disclosure, Fig.16 is an exploded view of a dimming sheet according to an embodiment of the present disclosure, Fig.17 The dimming sheet according to the disclosed embodiment is Fig.15 A cross-sectional view taken along line AA' in FIG. Fig.18 The dimming sheet according to the disclosed embodiment is Fig.15 A cross-sectional view taken along line BB'.

[0124] Combined with reference Figure 15-18The dimming film 8 may include: a first substrate 81 and a second substrate 82 arranged opposite to each other; a first conductive layer 83 arranged on the side of the first substrate 81 close to the second substrate 82; a second conductive layer 84 arranged on the side of the second substrate 82 close to the first substrate 81; and a dimming function layer 85 arranged between the first conductive layer 83 and the second conductive layer 84.

[0125] As described above, the dimming function layer 85 may be a PDLC layer, a PNLC layer or a PSLC layer. It should be understood that the dimming function layer 85 is not limited to the above examples, and it may be any functional layer having an electrically controlled optical switch characteristic under the action of an electric field. For example, under the action of an electric field, the dimming function layer 85 may be in a transparent state, and without the action of an electric field, the dimming function layer 85 may be in a foggy state.

[0126] Reference Fig.15 The dimming sheet 8 further includes a first electrode 60 electrically connected to the first conductive layer 83 and a second electrode 80 electrically connected to the second conductive layer 84. For example, the first electrode 60 may be one of the positive electrode and the negative electrode, and the second electrode 80 may be the other of the positive electrode and the negative electrode. Through the first electrode 60 and the second electrode 80, a designated electrical signal may be applied to the first conductive layer 83 and the second conductive layer 84, respectively.

[0127] Combined with reference Fig.16 and Fig.17 The first electrode 60 may be located on a surface of the first conductive layer 83 close to the dimming function layer 85. For example, a portion of the surface of the first conductive layer 83 close to the dimming function layer 85 may be formed as the first electrode 60.

[0128] In this embodiment, a portion of the first conductive layer 83 constitutes the first electrode 60. It should be understood that the embodiments of the present disclosure are not limited to this. A separate conductive portion may also be provided on the first conductive layer 83. For example, a conductive material such as metal may be deposited on the first conductive layer 83 to constitute the first electrode.

[0129] Combined with reference Figure 1 and Figure 2, the first electrode 60 is located on one side of the first conductive layer 83. For the convenience of description, the side of the first conductive layer 83 is referred to as the first side of the first conductive layer 83. The first conductive layer 83 includes a first side 831, and the first side 831 is located on the side (i.e., the first side) where the first electrode 60 is located. The first conductive layer 83 includes a protrusion 832 protruding relative to the first side 831 and a notch portion 833 recessed relative to the first side 831. The protrusion 832 includes a second side 8321, and the second side 8321 protrudes outward relative to the first side 831, i.e., further away from the center 3C of the first conductive layer 83. The notch portion 833 includes a fourth side 8331, and the fourth side 8331 is recessed inward relative to the first side 831, i.e., closer to the center 3C of the first conductive layer 83.

[0130] The first electrode 60 includes a first electrode portion 61 and a second electrode portion 62. The first electrode portion 61 and the second electrode portion 62 are respectively located on opposite sides of the first side surface 831. For example, the protrusion 832 of the first conductive layer 83 is formed as the first electrode portion 61, and the first conductive layer 83 is perpendicular to the first side surface 831 (in the direction of Figure 1 A portion of the first electrode portion 61 adjacent to the protrusion 832 in the X direction (in the X direction) is formed as the second electrode portion 62. That is, the first electrode portion 61 and the second electrode portion 62 are respectively located on both sides of the first side surface 831 in a direction perpendicular to the first side surface 831. With such a design, the first electrode 60 has a semi-embedded structure.

[0131] like Figure 15-16 As shown, the second side surface 8321 is formed as the outer side surface of the first electrode portion 61. In addition, the second electrode portion 62 has a third side surface 621 in a direction perpendicular to the first side surface 831. The third side surface 621 is flush with the fourth side surface 8331 of the notch portion 833 in a direction perpendicular to the first side surface 831.

[0132] Similarly, combined with reference Fig.16 and Fig.18 The second electrode 80 may be located on a surface of the second conductive layer 84 close to the dimming function layer 85. For example, a portion of the surface of the second conductive layer 84 close to the dimming function layer 85 may be formed as the second electrode 80.

[0133] In this embodiment, a portion of the second conductive layer 84 constitutes the second electrode 80. It should be understood that the embodiments of the present disclosure are not limited to this. A separate conductive portion may also be provided on the second conductive layer 84. For example, a conductive material such as metal may be deposited on the second conductive layer 84 to constitute the second electrode.

[0134] It should be noted that, in the illustrated embodiment, the first electrode 60 and the second electrode 80 are respectively disposed on the upper surface of the first conductive layer 83 and the lower surface of the second conductive layer 84, so the second electrode 80 should not be visible in the plan view. However, in the plan view of the accompanying drawings, in order to clearly show the structure of the second electrode 80, the second electrode 80 is still shown and represented by a dotted frame.

[0135] Combined with reference Fig.15 and Fig.16 , the second electrode 80 is located on one side of the second conductive layer 84. For the convenience of description, the side of the second conductive layer 84 is referred to as the first side of the second conductive layer 84. The second conductive layer 84 includes a first side 841, and the first side 841 is located on the side where the second electrode 80 is located (i.e., the first side). The second conductive layer 84 includes a protrusion 842 protruding relative to the first side 841 and a notch portion 843 recessed relative to the first side 841. The protrusion 842 includes a second side 8421, and the second side 8421 protrudes outward relative to the first side 841, that is, farther away from the center 4C of the second conductive layer 84. The notch portion 843 includes a fourth side 8431, and the fourth side 8431 is recessed inward relative to the first side 841, that is, closer to the center 4C of the second conductive layer 84.

[0136] The second electrode 80 includes a third electrode portion 81 and a fourth electrode portion 82. The third electrode portion 81 and the fourth electrode portion 82 are respectively located on opposite sides of the first side 841. For example, the protrusion 842 of the second conductive layer 84 is formed as the third electrode portion 81, and a portion of the second conductive layer 84 adjacent to the protrusion 842 in a direction perpendicular to the first side 841 is formed as the fourth electrode portion 82. That is, the third electrode portion 81 and the fourth electrode portion 82 are respectively located on both sides of the first side 841 in a direction perpendicular to the first side 841. With such a design, the second electrode 80 has a semi-embedded structure.

[0137] like Figure 15-16 As shown, the second side surface 8421 is formed as the outer side surface of the third electrode portion 81. In addition, the fourth electrode portion 82 has a third side surface 821 in a direction perpendicular to the first side surface 841. The third side surface 821 is flush with the fourth side surface 8431 of the notch portion 843 in a direction perpendicular to the first side surface 841.

[0138] In an embodiment of the present disclosure, the first electrode 60 and the second electrode 80 are respectively bound to a circuit board (described in detail below) such as a flexible circuit board (FPC) to achieve electrical connection between the electrode and the circuit board. When the circuit board is subjected to an external force, stress is generated in the above-mentioned dimming film. In an embodiment of the present disclosure, by designing the first electrode 60 and the second electrode 80 into a semi-embedded structure, the stress generated in the dimming film can be reduced and the binding force between the dimming film and the flexible circuit board can be increased. For example, relative to the convex electrode structure in which all electrodes protrude from the first side, when the other structures, dimensions and external forces of the dimming film are exactly the same, it is found through mechanical simulation tests that the stress generated in the dimming film can be reduced from 216.9MPa in the convex electrode structure to 170MPa in the semi-embedded electrode structure. By reducing the stress generated in the dimming film, the separation between the layers in the dimming film caused by large stress can be avoided, thereby ensuring that the dimming film can work normally. In addition, in the embodiment of the present disclosure, the first electrode 60 and the second electrode 80 are designed as a semi-embedded structure, so that the inner side surfaces of the first electrode 60 and the second electrode 80 are closer to the display area (such as Fig.15 The distance (indicated by DA in FIG. 1 ) is relatively large, thereby avoiding light leakage when viewing at a wide viewing angle.

[0139] It should be understood that, in this article, the first side of the dimming plate may be the side of the dimming plate 8 close to the flexible circuit board, for example, it may be represented by the first side 831 or the first side 841 mentioned above.

[0140] For example, the area of ​​the orthographic projection of the first electrode portion 61 on the first substrate 81 may be equal to the area of ​​the orthographic projection of the second electrode portion 62 on the first substrate 81. That is, half of the first electrode 60 protrudes relative to the first side 831, and the other half does not protrude relative to the first side 831. Similarly, the area of ​​the orthographic projection of the third electrode portion 81 on the second substrate 82 may be equal to the area of ​​the orthographic projection of the fourth electrode portion 82 on the second substrate 82. That is, half of the second electrode 80 protrudes relative to the first side 841, and the other half does not protrude relative to the first side 841.

[0141] For another example, the area of ​​the orthographic projection of the first electrode portion 61 on the first substrate 81 may be smaller than the area of ​​the orthographic projection of the second electrode portion 62 on the first substrate 81 .

[0142] For example, the width of the first electrode portion 61 in the direction perpendicular to the first side surface 831 may be less than or equal to the width of the second electrode portion 62 in the direction perpendicular to the first side surface 831. Fig.15As shown, the distance between the second side 8321 and the first side 831 in the X direction is d1, the distance between the first side 831 and the third side 621 in the X direction is d2, the length of the second side 8321 in the Y direction is w1, and the length of the third side 621 in the Y direction is w2. In some exemplary embodiments, w1=w2, d1<d2. For example, the ratio of d1 to d2 can be in the range of 2 / 3 to 4 / 5. In one example, d1=1mm, d2=1.5mm. Through such a design, the area of ​​the orthographic projection of the first electrode portion 61 on the first substrate 81 can be smaller than the area of ​​the orthographic projection of the second electrode portion 62 on the first substrate 81. In other exemplary embodiments, such as Figure 5 As shown, w1<w2. In this case, d1 can be greater than, equal to or less than d2, as long as the area of ​​the orthographic projection of the first electrode portion 61 on the first substrate 81 can be smaller than the area of ​​the orthographic projection of the second electrode portion 62 on the first substrate 81.

[0143] Similarly, the area of ​​the orthographic projection of the third electrode portion 81 on the second substrate 82 may be smaller than the area of ​​the orthographic projection of the fourth electrode portion 82 on the second substrate 82. For example, the width of the third electrode portion 81 in the direction perpendicular to the first side surface 841 may be less than or equal to the width of the fourth electrode portion 82 in the direction perpendicular to the first side surface 841. Specifically, Fig.15 As shown, the distance between the second side 8421 and the first side 841 in the X direction is d3, the distance between the first side 841 and the third side 821 in the X direction is d4, the length of the second side 8421 in the Y direction is w3, and the length of the third side 821 in the Y direction is w4. In some exemplary embodiments, w3=w4, d3<d4; or w3<w4, d3<d4. For example, the ratio of d3 to d4 can be in the range of 2 / 3 to 4 / 5. In one example, d3=1mm, d4=1.5mm. Through such a design, the area of ​​the orthographic projection of the third electrode portion 81 on the second substrate 82 can be smaller than the area of ​​the orthographic projection of the fourth electrode portion 82 on the second substrate 82. In other exemplary embodiments, such as Figure 5 As shown, w3<w4. In this case, d3 can be greater than, equal to or less than d4, as long as the area of ​​the positive projection of the third electrode portion 81 on the second substrate 82 can be smaller than the area of ​​the positive projection of the fourth electrode portion 82 on the second substrate 82.

[0144] In the above embodiment, by making the area of ​​the electrode portion protruding relative to the first side surface smaller, the stress generated in the dimming sheet can be further reduced, thereby further increasing the binding force between the dimming sheet and the flexible circuit board.

[0145] Reference Fig.15and Fig.16 , the orthographic projection of the first electrode 60 on the first substrate 81 may have a rectangular shape, for example, the orthographic projections of the first electrode portion 61 and the second electrode portion 62 of the first electrode 60 on the first substrate 81 may both have a rectangular shape. The width of the first electrode 60 is the distance between the second side 8321 and the third side 621 in the X direction, that is, the width of the first electrode 60 is equal to d1+d2. The length of the first electrode 60 is the larger of the length w1 of the second side 8321 in the Y direction and the length w2 of the third side 621 in the Y direction. Similarly, the orthographic projection of the second electrode 80 on the second substrate 82 may have a rectangular shape, for example, the orthographic projections of the third electrode portion 81 and the fourth electrode portion 82 of the second electrode 80 on the second substrate 82 may both have a rectangular shape. The width of the second electrode 80 is the distance between the second side 8421 and the third side 821 in the X direction, that is, the width of the second electrode 80 is equal to d3+d4. The length of the second electrode 80 is the larger of the length w3 of the second side 8421 in the Y direction and the length w4 of the third side 821 in the Y direction.

[0146] In the embodiment of the present disclosure, the width of each of the first electrode 60 and the second electrode 80 may be equal to or less than 2.5 mm. By designing the width of the first electrode 60 and the second electrode 80 to be smaller, it is beneficial to realize a display device with a narrow frame.

[0147] The inventors have found through research that the conductive area of ​​the electrode (for example, the conductive area can be equal to the length of the electrode multiplied by the width) determines the surface temperature, resistance and capacitance of the electrode. As the conductive area increases, the surface temperature of the electrode decreases, and the resistance and capacitance values ​​also decrease. The following table is a performance table of the electrodes of the dimming film according to the embodiment of the present disclosure under different parameter designs. Therefore, in the embodiment of the present disclosure, the length of the first electrode 60 can be designed to be 3 to 10 times its width. Similarly, the length of the second electrode 80 can be designed to be 3 to 10 times its width.

[0148] Table 1 Performance of dimming chip electrodes under different parameter designs

[0149]

[0150] Through such a design, while meeting the requirement of a narrow frame of the display device, a better dimming plate driving voltage can be obtained, and the surface temperature, resistance or capacitance of the electrode can have reasonable values ​​during operation.

[0151] Return to reference Fig.16, the outer contours of the first substrate 81 and the first conductive layer 83 may be the same, that is, the projections of the first substrate 81 and the first conductive layer 83 in the Z direction may overlap. Specifically, the first substrate 81 includes a first side surface 811, which also includes a protrusion 812 protruding relative to the first side surface 811 and a notch portion 813 recessed relative to the first side surface 811. The protrusion 812 includes a second side surface 8121, and the second side surface 8121 protrudes outward relative to the first side surface 811. The notch portion 813 includes a fourth side surface 8131, and the fourth side surface 8131 is recessed inward relative to the first side surface 811.

[0152] Similarly, the outer contours of the second substrate 82 and the second conductive layer 84 may be the same, that is, the projections of the second substrate 82 and the second conductive layer 84 in the Z direction may overlap. Specifically, the second substrate 82 includes a first side surface 821, and further includes a protrusion 822 protruding relative to the first side surface 821 and a notch portion 823 recessed relative to the first side surface 821. The protrusion 822 includes a second side surface 8221, and the second side surface 8221 protrudes outward relative to the first side surface 821. The notch portion 823 includes a fourth side surface 8231, and the fourth side surface 8231 is recessed inward relative to the first side surface 821.

[0153] The dimming function layer 85 includes a first side surface 851 , and further includes a notch portion 853 that is recessed relative to the first side surface 851 .

[0154] In the embodiment of the present disclosure, the projections of the protrusion 812 of the first substrate 81 and the protrusion 832 of the first conductive layer 83 in the Z direction overlap, and the projections of the notch 823 of the second substrate 82 and the notch 843 of the second conductive layer 84 in the Z direction overlap. More specifically, the projections of the notch 823 of the second substrate 82 and the notch 843 of the second conductive layer 84 in the Z direction overlap with the projection of the first electrode 60 in the Z direction, and the projection of the notch 853 of the dimming function layer 85 in the Z direction covers the projection of the first electrode 60 in the Z direction. In this way, the notch 823 of the second substrate 82, the notch 843 of the second conductive layer 84, and the notch 853 of the dimming function layer 85 expose the upper surface of the first conductive layer 83, so that the first electrode 60 located on the upper surface of the first conductive layer 83 is exposed, which facilitates the electrical connection of the first electrode 60 with the circuit board.

[0155] In the embodiment of the present disclosure, the projections of the protrusion 822 of the second substrate 82 and the protrusion 842 of the second conductive layer 84 in the Z direction overlap, and the projections of the notch 813 of the first substrate 81 and the notch 833 of the first conductive layer 83 in the Z direction overlap. More specifically, the projections of the notch 813 of the first substrate 81 and the notch 833 of the first conductive layer 83 in the Z direction overlap with the projection of the second electrode 80 in the Z direction, and the projection of the notch 853 of the dimming function layer 85 in the Z direction covers the projection of the second electrode 80 in the Z direction. In this way, the notch 813 of the first substrate 81, the notch 833 of the first conductive layer 83, and the notch 853 of the dimming function layer 85 expose a portion of the lower surface of the second conductive layer 84, so that the second electrode 80 located on the lower surface of the second conductive layer 84 is exposed, which facilitates the electrical connection of the first electrode 8 with the circuit board.

[0156] For example, the distance between the orthographic projection of the first electrode 60 on the first substrate 81 and the orthographic projection of the second electrode 80 on the first substrate 81 is small. Figure 15-16 In the illustrated embodiment, the distance between the orthographic projection of the first electrode 60 on the first substrate 81 and the orthographic projection of the second electrode 80 on the first substrate 81 is substantially equal to zero, that is, the side of the orthographic projection of the first electrode 60 on the first substrate 81 close to the orthographic projection of the second electrode 80 on the first substrate 81 coincides with the side of the orthographic projection of the second electrode 80 on the first substrate 81 close to the orthographic projection of the first electrode 60 on the first substrate 81, as shown in FIG. Fig.19 shown.

[0157] In this case, optionally, the projection of the notch portion 853 of the dimming function layer 85 in the Z direction coincides with the projection of the combination of the first electrode 60 and the second electrode 80 in the Z direction. Fig.16 As shown, a larger notch portion 853 may be formed in the dimming function layer 85 , thereby simplifying the manufacturing process.

[0158] For example, the first substrate 81 and the second substrate 82 may both be a transparent PET (polyethylene terephthalate) substrate, a glass substrate, or a PC (polycarbonate) substrate.

[0159] For example, the material of the first conductive layer 83 and the second conductive layer 84 is ITO (transparent indium tin oxide thin film) or PCF (polymer flexible transparent conductive film).

[0160] It should be noted that, although in the above-mentioned embodiments, each of the first conductive layer 83 and the second conductive layer 84 includes a planar electrode, it should be understood that the embodiments of the present disclosure are not limited to this, and each of the first conductive layer 83 and the second conductive layer 84 may include a lattice-shaped electrode for use in HDR display products, thereby improving the contrast of the display device; or, each of the first conductive layer 83 and the second conductive layer 84 may include a ring electrode or a strip electrode.

[0161] Further references Figure 15-18 , schematically shows the electrical connection between the dimming chip and a circuit board such as an FPC according to an embodiment of the present disclosure. In this article, the dimming chip, the circuit board such as an FPC, and the connection structure between the two are referred to as a dimming chip assembly.

[0162] Combined with reference to Figure 15-18 According to an embodiment of the present disclosure, the dimming sheet assembly may include the above-mentioned dimming sheet, a flexible circuit board 40 , and a conductive connection layer located between the dimming sheet and the flexible circuit board 40 .

[0163] The flexible circuit board 40 may include a flexible circuit board body 401, a first contact portion 402, a second contact portion 403, and a third contact portion 404. The first contact portion 402 is located on a first surface of the flexible circuit board body 401, and the second contact portion 403 is located on a second surface of the flexible circuit board body 401. The first surface and the second surface are two back-to-back surfaces of the flexible circuit board body 401, for example, the first surface is the surface of the flexible circuit board body 401 facing the first conductive layer 83, and the second surface is the surface of the flexible circuit board body 401 facing the second conductive layer 84. The first contact portion 402 is conductively connected to the first electrode 60, and the second contact portion 403 is conductively connected to the second electrode 80. The third contact portion 404 is, for example, a gold finger portion, which is used to conductively connect to an external circuit (for example, an integrated chip).

[0164] Combined with reference Fig.15 , Fig.17 and Fig.18 The conductive connection layer includes a first conductive adhesive layer 301 and a second conductive adhesive layer 302. For example, the first conductive adhesive layer 301 and the second conductive adhesive layer 302 may be anisotropic conductive films (Anisotropic Conductive Film, ACF for short).

[0165] For example, the first contact portion 402 and the second contact portion 403 of the flexible circuit board 40 can be copper foil leads arranged on the flexible circuit board body 401. During the assembly process, the first electrode 60 and the second electrode 80 of the dimming chip are respectively aligned with the first contact portion 402 and the second contact portion 403 of the flexible circuit board 40, and the ACF material is placed between the first electrode 60 and the first contact portion 402 and between the second electrode 80 and the second contact portion 403, and then bonded by thermal compression. Through such a connection method, not only the electrical connection structure between the dimming chip and the circuit board is simplified, but also the reliability of the electrical connection between the two is guaranteed.

[0166] Fig. 20 is a schematic plan view of a dimming sheet according to some other embodiments of the present disclosure, Fig.21 is an exploded view of a dimming sheet according to some other embodiments of the present disclosure. Figure 20-21 The embodiment shown is relative to Figure 15-19 The differences of the embodiments shown are as follows Figure 20-21 Other structures of the dimming film and the dimming film assembly in the embodiment shown in the figure can be referred to in detail. Figure 15-19 The description of the embodiments will not be repeated here.

[0167] Reference Fig. 20 and Fig.21 The dimming film 8 includes: a first substrate 81 and a second substrate 82 arranged opposite to each other; a first conductive layer 83 arranged on a side of the first substrate 81 close to the second substrate 82; a second conductive layer 84 arranged on a side of the second substrate 82 close to the first substrate 81; and a dimming function layer 85 arranged between the first conductive layer 83 and the second conductive layer 84. The dimming film 8 also includes a first electrode 60 electrically connected to the first conductive layer 83 and a second electrode 80 electrically connected to the second conductive layer 84. Similarly, the first electrode 60 and the second electrode 80 also have a semi-embedded structure.

[0168] In the illustrated embodiment, the orthographic projection of the first electrode 60 on the first substrate 81 is spaced apart from the orthographic projection of the second electrode 80 on the first substrate 81 by a specified distance, that is, the distance between the side of the orthographic projection of the first electrode 60 on the first substrate 81 close to the orthographic projection of the second electrode 80 on the first substrate 81 and the side of the orthographic projection of the second electrode 80 on the first substrate 81 close to the orthographic projection of the first electrode 60 on the first substrate 81 ( Fig. 20The distance s in the embodiment of the present disclosure is greater than the specified distance. In the embodiment of the present disclosure, the first electrode 60 is in electrical contact with the first contact portion 402, and the second electrode 80 is in electrical contact with the second contact portion 403. During operation, a certain amount of heat will be accumulated at the positions of the two electrical contacts. By spacing the first electrode 60 and the second electrode 80, specifically, spacing them at a specified distance, it is possible to avoid the heat accumulated at the two electrodes from influencing each other (e.g., superimposing each other), thereby avoiding affecting the electrical connection performance.

[0169] That is, in the embodiment of the present disclosure, the prescribed distance is related to the amount of heat accumulated at the first electrode 60 and the second electrode 80 .

[0170] For example, in a display product such as a computer monitor, the prescribed distance may be 40 mm or more. That is, the distance between the side of the orthogonal projection of the first electrode 60 on the first substrate 81 close to the orthogonal projection of the second electrode 80 on the first substrate 81 and the side of the orthogonal projection of the second electrode 80 on the first substrate 81 close to the orthogonal projection of the first electrode 60 on the first substrate 81 ( Fig. 20 The distance s) in the test piece is above 40 mm.

[0171] exist Figure 20-21 In the embodiment shown, the dimming sheet assembly may include a flexible circuit board 40. Fig. 20 As shown, the first contact portion 402 and the second contact portion 403 of the flexible circuit board 40 are also spaced apart by the specified distance to facilitate alignment with the first electrode 60 and the second electrode 80 , respectively.

[0172] Optionally, the dimming sheet assembly may include two flexible circuit boards. For example, the two flexible circuit boards are a first flexible circuit board and a second flexible circuit board. The first flexible circuit board may include a first contact portion 402 to be electrically connected to the first electrode 60. The second flexible circuit board may include a second contact portion 403 to be electrically connected to the second electrode 80.

[0173] In the display device according to the embodiment of the present disclosure, the first electrode 60 and the second electrode 80 of the dimming sheet 8 are respectively supplied with a specified electrical signal through the flexible circuit board 40 to form an electric field between the first conductive layer 83 and the second conductive layer 84. For example, when the dimming function layer 85 is a PDLC layer, the applied electric field can adjust the optical axis orientation of the small droplets composed of liquid crystal molecules. When the refractive index of the small droplets composed of liquid crystal molecules matches the refractive index of the substrate, the PDLC layer can be transparent. In this state, the light emitted by the light source of the backlight module can pass through the dimming function layer 85. In this way, the display device is in the anti-peep mode by the cooperation of the anti-peep film 205 and the dimming function layer 85 in the transparent state. When the specified electrical signal is stopped from being supplied to the first electrode 60 and the second electrode 80, the electric field is not formed between the first conductive layer 83 and the second conductive layer 84, the optical axis of the small droplets composed of liquid crystal molecules is in a free orientation, its refractive index does not match the refractive index of the substrate, and the dimming function layer 85 is foggy. In this way, the display device is in a sharing mode through the cooperation between the privacy film 205 and the dimming function layer 85 in a foggy state.

[0174] Since the display device includes the aforementioned dimming film, it can have all the characteristics and advantages of the dimming film described in the above embodiments, which will not be described in detail here.

[0175] The embodiment of the present disclosure also provides a method for manufacturing a dimming film, Fig.16 and Fig. 22 , the manufacturing method shown can be performed according to the following steps.

[0176] In step S10, a first substrate 81, a first conductive layer 83, a dimming function layer 85, a second conductive layer 84, and a second substrate 82 are sequentially stacked. For example, the first conductive layer 83 may be formed on the first substrate 81, the second conductive layer 84 may be formed on the second substrate 82, and then the first substrate 81 and the second substrate 82 are aligned and assembled, and the dimming function layer 85 is formed between the first conductive layer 83 and the second conductive layer 84.

[0177] In step S20, a protrusion 832 is formed on the first conductive layer 83, a protrusion 812 is formed on the first substrate 81, a recess 823 is formed on the second substrate 82, a recess 843 is formed on the second conductive layer 84, and a portion of the recess 853 is formed on the dimming function layer 85 by laser cutting to expose a portion of the surface of the first conductive layer 83 close to the second conductive layer 84, thereby forming a first electrode 60.

[0178] In step S30, a protrusion 842 is formed on the second conductive layer 84, a protrusion 822 is formed on the second substrate 82, a notch 813 is formed on the first substrate 81, a notch 833 is formed on the first conductive layer 83, and another part of the notch 853 is formed on the dimming function layer 85 to expose a portion of the surface of the second conductive layer 84 close to the first conductive layer 83, thereby forming a second electrode 80.

[0179] The embodiment of the present disclosure further provides a method for manufacturing a dimming sheet assembly, the method for manufacturing a dimming sheet assembly includes the above-mentioned method for manufacturing a dimming sheet, and it may further include the following steps:

[0180] Applying a conductive adhesive such as ACF adhesive on the flexible circuit board 40 , for example, applying a conductive adhesive such as ACF adhesive on the first contact portion 402 and the second contact portion 403 of the flexible circuit board 40 ; and

[0181] The first contact portion 402 and the second contact portion 403 with the conductive adhesive are respectively attached to the first electrode 60 and the second electrode 80 to bind the flexible circuit board 40 and the dimming film 8 together.

[0182] It should be noted that, in some embodiments of the present disclosure, some steps in the above method may be performed individually or in combination, and may be performed in parallel or sequentially, and are not limited to Fig. 22 The specific operation sequence shown.

[0183] It should be noted that in the embodiments of the present disclosure, the display device can be any product or component with a display function, including but not limited to liquid crystal displays, e-books, mobile phones, tablet computers, televisions, laptops, digital photo frames, navigators, etc.

[0184] Although some embodiments according to the general inventive concept of the present disclosure have been shown and described, it will be appreciated by those skilled in the art that changes may be made to these embodiments without departing from the principles and spirit of the general inventive concept of the present disclosure, the scope of which is defined by the claims and their equivalents.

Claims

1. A display device, comprising: Back panel; A rubber frame connected to the back panel; A backlight module disposed on the back panel, wherein the backlight module is configured to emit light; An anti-peep film disposed on the light-emitting side of the backlight module; and A dimming sheet is arranged on a side of the privacy film away from the back plate, and the dimming sheet is configured to adjust the viewing angle of the display device. The plastic frame includes a first surface and a side end surface, the first surface of the plastic frame is a surface of the plastic frame close to the dimming film and opposite to the light emitting surface of the dimming film, and the side end surface of the plastic frame is a side surface located at one end of the plastic frame close to the dimming film; The display device further includes a flexible circuit board, wherein the flexible circuit board includes a flexible circuit board body, a first contact portion and a second contact portion disposed on the flexible circuit board body; The dimming plate comprises a first electrode and a second electrode, wherein the first electrode and the second electrode are electrically in contact with the first contact portion and the second contact portion respectively; The dimming plate includes a first side surface close to the flexible circuit board, the first electrode includes a first electrode portion and a second electrode portion, the second electrode portion and the first electrode portion are respectively located on both sides of the first side surface in a direction perpendicular to the first side surface, and the first electrode portion protrudes toward the flexible circuit board relative to the first side surface; the second electrode includes a third electrode portion and a fourth electrode portion, the third electrode portion and the fourth electrode portion are respectively located on both sides of the first side surface in a direction perpendicular to the first side surface, and the third electrode portion protrudes toward the flexible circuit board relative to the first side surface; The dimming film includes a first conductive layer and a second conductive layer, the first conductive layer includes a notch portion and a protrusion portion, the notch portion of the first conductive layer is recessed relative to the first side of the dimming film, and the protrusion portion of the first conductive layer protrudes relative to the first side of the dimming film; the second conductive layer includes a notch portion and a protrusion portion, the notch portion of the second conductive layer is recessed relative to the first side of the dimming film, and the protrusion portion of the second conductive layer protrudes relative to the first side of the dimming film.

2. The display device according to claim 1, wherein: The dimming film also includes: A first substrate and a second substrate disposed opposite to each other; and a dimming function layer disposed between the first conductive layer and the second conductive layer, Among them, the first conductive layer is arranged on the side of the first substrate close to the second substrate, and the second conductive layer is arranged on the side of the second substrate close to the first substrate; the first electrode is located on the surface of the first conductive layer close to the dimming functional layer, and the second electrode is located on the surface of the second conductive layer close to the dimming functional layer; the first contact portion is located on the surface of the flexible circuit board body facing the first conductive layer, and the second contact portion is located on the surface of the flexible circuit board body facing the second conductive layer.

3. The display device according to claim 2, wherein: The display device further includes a light blocking component disposed on at least one of the back plate, the plastic frame and the dimming film.

4. The display device according to claim 3, wherein: The dimming film includes a side end surface close to the rubber frame, and the light blocking component includes a first shading component arranged on the first surface of the rubber frame, the first shading component includes a first shading sub-component and a second shading sub-component, the first shading sub-component covers at least a portion of the first surface of the rubber frame, and the second shading sub-component covers at least a portion of the side end surface of the dimming film.

5. The display device according to claim 4, wherein: The first light-shielding subcomponent extends parallel to the light-emitting surface of the dimming film, and the second light-shielding subcomponent extends perpendicular to the light-emitting surface of the dimming film.

6. The display device according to claim 3, wherein: The light blocking component includes a second light shielding component disposed on at least one of the first surface of the plastic frame and the side surface of the back plate close to the dimming film.

7. The display device according to claim 6, wherein: The second light shielding component includes black foam.

8. The display device according to claim 3, wherein: The light blocking member includes a third light shielding member disposed on a side end surface of the dimming sheet.

9. The display device according to claim 8, wherein: The third light shielding member includes black ink; or, The third light shielding component includes a frame sealant, and the frame sealant is arranged between the first conductive layer and the second conductive layer to encapsulate the dimming function layer.

10. The display device according to claim 4, wherein: The light blocking component includes a fourth light shielding component arranged on the light emitting surface of the dimming plate, and the orthographic projection of the fourth light shielding component on the back plate falls within the orthographic projection of the rubber frame on the back plate.

11. The display device according to claim 10, wherein: Each of the first light shielding member and the fourth light shielding member includes a black rubber strip.

12. The display device according to claim 1, wherein: The backlight module includes multiple optical film layers, and the orthographic projection of at least one of the multiple optical film layers and the anti-peep film on the back panel covers the orthographic projection of the dimming film on the back panel, and the area of ​​the orthographic projection of at least one of the multiple optical film layers and the anti-peep film on the back panel is larger than the area of ​​the orthographic projection of the dimming film on the back panel.

13. The display device according to claim 12, wherein: The privacy film comprises a first surface close to the backlight module and a second surface close to the dimming film, and at least one of the first surface of the privacy film and the second surface of the privacy film is a rough surface.

14. The display device according to claim 12 or 13, wherein: The display device further comprises a polarizing plate located on a side of the dimming plate away from the privacy film, and a surface of the polarizing plate close to the dimming plate is a rough surface.

15. The display device according to claim 14, wherein: The dimming plate further includes: anti-adsorption particles arranged on a surface of the dimming plate close to the privacy film; and anti-adsorption particles arranged on a surface of the dimming plate close to the polarizer.

16. The display device according to claim 2, wherein: The area of ​​the orthographic projection of the first electrode portion on the first substrate is smaller than or equal to the area of ​​the orthographic projection of the second electrode portion on the first substrate; And / or, an area of ​​an orthographic projection of the third electrode portion on the second substrate is smaller than or equal to an area of ​​an orthographic projection of the fourth electrode portion on the second substrate.

17. The display device according to claim 16, wherein: The width of the first electrode portion in a direction perpendicular to the first side surface of the dimming film is less than or equal to the width of the second electrode portion in a direction perpendicular to the first side surface of the dimming film; and / or the width of the third electrode portion in a direction perpendicular to the first side surface of the dimming film is less than or equal to the width of the fourth electrode portion in a direction perpendicular to the first side surface of the dimming film.

18. The display device according to claim 16, wherein: The length of the first electrode portion in a direction parallel to the first side of the dimming film is less than or equal to the length of the second electrode portion in a direction parallel to the first side of the dimming film; and / or the length of the third electrode portion in a direction parallel to the first side of the dimming film is less than or equal to the length of the fourth electrode portion in a direction parallel to the first side of the dimming film.

19. The display device according to claim 16, wherein: The length of the first electrode in a direction parallel to the first side surface of the dimming film is 3 to 10 times the width of the first electrode in a direction perpendicular to the first side surface of the dimming film; and / or the length of the second electrode in a direction parallel to the first side surface of the dimming film is 3 to 10 times the width of the second electrode in a direction perpendicular to the first side surface of the dimming film.

20. The display device according to claim 16, wherein: The ratio of the area of ​​the orthographic projection of the first electrode portion on the first substrate to the area of ​​the orthographic projection of the second electrode portion on the first substrate is ~ to the extent that: The ratio of the area of ​​the orthographic projection of the third electrode portion on the second substrate to the area of ​​the orthographic projection of the fourth electrode portion on the second substrate is ~ within the range.

21. The display device according to any one of claims 16 to 20, wherein: A side edge of the orthographic projection of the first electrode on the first substrate close to the orthographic projection of the second electrode on the first substrate coincides with a side edge of the orthographic projection of the second electrode on the first substrate close to the orthographic projection of the first electrode on the first substrate.

22. The display device according to any one of claims 16 to 20, wherein: An orthographic projection of the first electrode on the first substrate is spaced apart from an orthographic projection of the second electrode on the first substrate by a specified distance.

23. The display device according to claim 22, wherein: The prescribed distance is greater than or equal to 40 mm.

24. The display device according to claim 2, wherein: The first substrate includes a notch, and an orthographic projection of the notch of the first conductive layer on the first substrate and an orthographic projection of the second electrode on the first substrate overlap with the notch of the first substrate.

25. The display device according to claim 2, wherein: The second substrate includes a notch, and an orthographic projection of the notch of the second conductive layer on the second substrate and an orthographic projection of the first electrode on the second substrate overlap with the notch of the second substrate.

26. The display device according to claim 25, wherein: The dimming function layer includes a notch portion, and an orthographic projection of the notch portion of the dimming function layer on the first substrate covers an orthographic projection of the first electrode on the first substrate and an orthographic projection of the second electrode on the first substrate.

27. The display device according to claim 2, wherein: Each of the first conductive layer and the second conductive layer includes a planar electrode, a grid electrode, a ring electrode, or a strip electrode.

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