Display device

Abstract

The display device comprises a backlight module, a first display panel and a light guide layer which are arranged in a stacked mode and further comprises a first light source, and the backlight module comprises a first light emitting area; the first display panel comprises a plurality of reflection display areas and a plurality of transmission display areas and further comprises a first electrode layer and a first liquid crystal layer, the first electrode layer comprises reflection electrodes located in the reflection display areas and light-transmitting electrodes located in the transmission display areas, and orthographic projections of the transmission display areas and the first light-emitting areas in the first direction are at least partially overlapped; the first light source is located on one side of the light guide layer in the second direction perpendicular to the first direction. The light guide layer comprises a first light guide function layer and a first microstructure layer which are arranged in a stacked mode, the first microstructure layer is provided with a plurality of groove structures, each groove structure comprises a first bottom wall inclining in the direction away from the first light source, and a first acute angle is formed between the first bottom wall and the first surface. According to the display device provided by the invention, the sharing mode and the peep-proof mode can be switched.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of display modules, and particularly relates to a display device. BACKGROUND

[0002] At present, vehicle-mounted display products are mainly divided into ICD display systems (Instrument Cluster Display) in front of drivers, CID (Central Information Display) display systems, and CDD display systems (Co-driver display). The CDD display system can enrich the functions of a vehicle and improve the user experience of a front passenger. In order to improve the safety performance of a vehicle under the premise of ensuring the richness of vehicle functions, the CDD display system needs to enable the front passenger position to clearly see the display image and the driver position to not clearly see the real image during vehicle driving, that is, to realize anti-peeping display for the driver to reduce the interference on the driver. When the vehicle is stopped, the front passenger position and the driver position can both clearly see the display image to realize the sharing of the display image for the driver position and the front passenger position. However, the display panel in the related art cannot meet the functional requirements of integrating anti-peeping and sharing and switching between anti-peeping and sharing. CONTENT OF THE UTILITY MODEL

[0003] The application aims to at least solve the problem that the display panel cannot meet the functional requirements of integrating anti-peeping and sharing and switching between anti-peeping and sharing. The application achieves the goal by the following technical scheme:

[0004] The application provides a display device, which is characterized by comprising:

[0005] A backlight module comprising at least one first light-emitting area;

[0006] A first display panel arranged on one side of a light-emitting surface of the backlight module, the first display panel comprising a plurality of reflective display areas and a plurality of transmissive display areas, the first display panel comprising a first electrode layer and a first liquid crystal layer arranged in a stacked manner in a direction away from the backlight module, the first electrode layer comprising reflective electrodes located in the reflective display areas and light-transmitting electrodes located in the transmissive display areas, and a projection of the transmissive display area in a first direction at least partially overlapping a projection of the first light-emitting area in the first direction;

[0007] A light guide layer located on a side of the first display panel away from the backlight module;

[0008] A first light source located on a side of the light guide layer in a second direction, the second direction being perpendicular to the first direction;

[0009] The light guide layer comprises a first light guide functional layer and a first microstructure layer located on a side of the first light guide functional layer away from the backlight module, the first microstructure layer comprises a first surface on a side away from the first light guide functional layer, the first surface is formed with a plurality of groove structures, the groove structure comprises a first bottom wall inclined toward a direction away from the first light source, and a first acute angle is formed between the first bottom wall and the first surface.

[0010] The display device provided in the present application comprises a backlight module and a first display panel which are arranged in a stacked manner, the backlight module comprises a light emitting surface, and the first display panel is located on the light emitting surface side of the backlight module. The display device further comprises a light guide layer and a first light source, and the first light source is used to provide front light for the first display panel to enable the first display panel to display. The first display panel comprises a plurality of reflection display areas and a plurality of transmission display areas, so that the display device can perform reflection display and transmission display. Specifically, the first display panel comprises a first electrode layer and a first liquid crystal layer which are arranged in a stacked manner in a direction away from the backlight module, the first electrode layer comprises a reflection electrode and a light transmission electrode, the reflection electrode is located in the reflection display area, and the light transmission electrode is located in the transmission display area. The light of the first light source can be modulated by the light guide layer to provide light for the reflection display area, and the reflection electrode reflects the light to realize the display of the reflection display area. The orthographic projection of the transmission display area in the first direction at least partially overlaps the orthographic projection of the first light emitting area in the first direction, the light emitted by the first light emitting area can be displayed after passing through the transmission display area, thereby realizing the display of the transmission display area.

[0011] In the above embodiment, the light guide layer can modulate the light incident into the light guide layer from the first light source. Specifically, the light guide layer includes a first light guide functional layer and a first microstructure layer, and the first microstructure layer is located on the side of the first light guide functional layer away from the backlight module. The first light guide functional layer includes an incident surface and an emitting surface, the incident surface is located on one side of the first light guide functional layer along a second direction, and the second direction is perpendicular to the first direction. The emitting surface faces the first liquid crystal layer. The light from the first light source is incident into the first light guide functional layer through the incident surface, is reflected to the first microstructure layer through the first light guide functional layer, and is then reflected to the emitting surface along the second direction. Specifically, the first microstructure layer includes a first surface away from the first light guide functional layer, and the first surface is formed with a plurality of groove structures. The groove structure includes a first bottom wall inclined away from the first light source, and a first acute angle is formed between the first bottom wall and the first surface, i.e., the opening of the first acute angle faces away from the first light source. The light from the first light source is incident into the first light guide functional layer through the incident surface, is reflected to the first microstructure layer through the first light guide functional layer, and is then emitted from the emitting surface along a third direction due to the modulation of the first surface and the groove structure of the first microstructure layer. The light incident into the reflective electrode along the third direction is reflected by the reflective electrode and then emitted along a target direction, thereby modulating the angle of the light emitted from the display device to achieve the anti-peep function.

[0012] Specifically, in the display device provided in the present application, the structure of the light guide layer, the position of the first light source, and the liquid crystal first display panel with the reflective electrode are matched to achieve the anti-peep function.

[0013] In some embodiments of the present application, the display device includes a sharing mode and an anti-peep mode,

[0014] In the sharing mode, the first light source is configured to be turned off, so that the transmissive display area of the first display panel is displayed based on the first light emitting area.

[0015] In the anti-peep mode, the first light source is configured to be turned on and emit light into the light guide layer, the light guide layer is configured to modulate the light, and the modulated light is emitted from the surface of the light guide layer facing the first liquid crystal layer along a third direction to the reflective electrode. The reflective electrode is configured to reflect the modulated light toward a target direction, and the third direction and the target direction are located on opposite sides of the reflection point of the reflective electrode.

[0016] In some embodiments of the present application, the first acute angle ranges from 15° to 45°.

[0017] In some embodiments of the present application, the first display panel further comprises:

[0018] In some embodiments of the present application, the first display panel further comprises:

[0019] a first lower polarizer located on a side of the first display panel close to the backlight module;

[0020] a first array substrate located between the first lower polarizer and the first electrode layer;

[0021] a first color film substrate located on a side of the first liquid crystal layer away from the first electrode layer;

[0022] a first upper polarizer located on a side of the first color film substrate away from the first liquid crystal layer;

[0023] The first upper polarizer is located between the light guide layer and the first color film substrate, or the first upper polarizer is located on a side of the light guide layer away from the first color film substrate.

[0024] In some embodiments of the present application, the first array substrate comprises a drive circuit, the drive circuit comprises a transistor and a capacitor, a projection of the transistor and the capacitor in the first direction does not overlap with a projection of the transmissive display area in the first direction, and the light-transmitting electrode, the reflective electrode and the drive circuit are connected.

[0025] In some embodiments of the present application, the reflective electrode and the light-transmitting electrode are arranged in the same layer in the first electrode layer; or

[0026] The first electrode layer comprises an extension arranged in the same layer as the light-transmitting electrode, the extension corresponds to the light-transmitting electrode one by one and is connected to each other, and the reflective electrode is located on a side of the extension away from the backlight module.

[0027] In some embodiments of the present application, the backlight module comprises a second light source and a light guide plate, the second light source is located on a side of the light guide plate away from the first display panel, or the second light source is located on any side of the light guide plate along the second direction.

[0028] In some embodiments of the present application, the backlight module further comprises a second display panel, the second display panel is located between the light guide plate and the first display panel, and the second display panel comprises a second lower polarizer, a second array substrate, a second electrode layer, a second liquid crystal layer, a second color filter substrate and a second upper polarizer which are stacked in a direction pointed by the light guide plate to the first display panel.

[0029] In some embodiments of the present application, the first display panel comprises a first color filter substrate located between the first liquid crystal layer and the light guide layer, the first color filter substrate comprises a first filter layer, and the first filter layer comprises a plurality of first filter portions of a plurality of light transmission colors;

[0030] The second color filter substrate comprises a second filter layer, and the second filter layer comprises a plurality of second filter portions of a plurality of colors;

[0031] The first filter portion and the second filter portion of the same light transmission color at least partially overlap in projection on the backlight module.

[0032] In some embodiments of the present application, the transmittance of the first filter portion is greater than the transmittance of the second filter portion.

[0033] In some embodiments of the present application, the backlight module further comprises a second light emitting area which is continuously arranged with the first light emitting area, and a projection of the second light emitting area in the first direction at least partially overlaps with a direct projection of the reflective display area in the first direction.

[0034] In some embodiments of the present application, the backlight module comprises an organic light emitting diode display panel, the organic light emitting diode display panel comprises a third array substrate and a light emitting unit, the light emitting unit is located between the third array substrate and the first display panel, and the light emitting unit comprises a first electrode, a light emitting layer and a second electrode which are stacked.

[0035] In some embodiments of the present application, the display device comprises a first display area and a second display area which are alternately arranged, the first light emitting area of the backlight module and the transmissive display area of the first display panel are located in the first display area, and the reflective display area in the first display panel is located in the second display area.

[0036] The display device comprises a plurality of sub-pixels, part of each of the sub-pixels is located in the first display area and part of each of the sub-pixels is located in the second display area, the sub-pixel comprises an electrode, and the electrode comprises the light-transmissive electrode and the reflective electrode; or,

[0037] The display device includes a plurality of sub-pixels, the plurality of sub-pixels including transmissive sub-pixels and reflective sub-pixels, the reflective sub-pixels including the reflective electrode, the transmissive sub-pixels including the light-transmissive electrode, the first display area including a first repeating unit, the first repeating unit including the reflective sub-pixels of a plurality of light-out colors, the second display area including a plurality of second repeating units, the second repeating units including the transmissive sub-pixels of a plurality of light-out colors. BRIEF DESCRIPTION OF DRAWINGS

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0039] Figure 1 is a top view of a display panel provided by an embodiment of the present application;

[0040] Figure 2 is a top view of a display panel provided by an embodiment of the present application; Figure 1 is a zoomed-in view of a Q region in FIG. 1;

[0041] Figure 3 is a zoomed-in view of a Q region in FIG. 1; Figure 2 is a cross-sectional view along M-M' in a privacy mode in FIG. 1;

[0042] Figure 4 is a structure diagram of a first light source and a light guide layer in a display panel provided by an embodiment of the present application;

[0043] Figure 5 is a structure diagram of a light guide layer provided by an embodiment of the present application;

[0044] Figure 6 is a front view of a groove structure of a light guide layer in a display panel provided by an embodiment of the present application;

[0045] Figure 7 is a right view of a groove structure of a light guide layer in a display panel provided by an embodiment of the present application;

[0046] Figure 8 is a cross-sectional view along M-M' in a sharing mode in FIG. 1; Figure 2

[0047] Figure 9 is a full view angle distribution diagram of a display panel in a privacy mode provided by an embodiment of the present application;

[0048] Figure 10 is a full view angle distribution diagram of a display panel in a sharing mode provided by an embodiment of the present application; ​

[0049] Figure 11 is Figure 1 Another enlarged view schematic diagram of the Q region in the middle;

[0050] Figure 12 is Figure 11 A cross-sectional view along P-P' in the middle;

[0051] Figure 13 is Figure 2 Another cross-sectional view along M-M' in the middle;

[0052] Figure 14 is Figure 11 Another cross-sectional view along P-P' in the middle;

[0053] Figure 15 is Figure 11 Still another cross-sectional view along P-P' in the middle.

[0054] Reference signs are as follows:

[0055] 1, display panel; 11, backlight module; 111, first light-emitting area; 112, second light-emitting area; 113, light guide plate; 110, second light source; 114, second display panel; 1141, second lower polarizer; 1142, second array substrate; 1143, second electrode layer; 1144, second liquid crystal layer; 1145, second color filter substrate; 1146, second upper polarizer; 1147, second light filtering part; 115, organic light-emitting diode first display panel; 1151, third array substrate; 1152, light-emitting unit; 1153, first electrode; 1154, second electrode; 1155, light-emitting layer; 12, first display panel; A1, reflective display area; A2, transmissive display area; 121, first electrode layer; 1211, reflective electrode; 1212, light-transmissive electrode; 122, first liquid crystal layer; 10, light guide layer; 101, first light guide functional layer; 102, first microstructure layer; 103, groove structure; 104, first bottom wall; a, first acute angle; h, first distance; 105, second bottom wall; 106, third bottom wall; 107, fourth bottom wall; s, third direction; L1, long side; L2, short side; b, second acute angle; g1, third acute angle; g2, fourth acute angle; 124, first lower polarizer; 125, first array substrate; 1251, transistor; 1252, capacitor; 126, first color filter substrate; 1261, first light filtering part; 127, first upper polarizer; 128, spacer layer; 13, first light source; x, first direction; y, second direction; z, fourth direction; f, target direction; 14, first display area; 141, first repeating unit; 15, second display area; 16, sub-pixel; 160, electrode; 161, reflective sub-pixel; 162, transmissive sub-pixel; 151, second repeating unit; 17, adhesive layer. DETAILED DESCRIPTION

[0056] Example embodiments of the present disclosure will be described more fully hereinafter with reference to the accompanying drawings. While example embodiments of the present disclosure are shown in the drawings, it is understood that the present disclosure can be embodied in many forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art.

[0057] It is to be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises", "comprising", "includes", "including" and "has" are inclusive and therefore specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order

[0058] Although the terms first, second, third, and the like can be used herein to describe various elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as "first", "second", and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

[0059] For ease of description, spatial relative terms may be used in the text to describe the relationship of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "over," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure is flipped, an element described as "below other elements or features" or "below other elements or features" would subsequently be oriented as "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0060] like Figures 1 to 6 As shown, according to an embodiment of this application, a display device 1 is proposed, including a backlight module 11, a first display panel 12, a light guide layer 10, and a first light source 13. The backlight module 11 includes at least one first light-emitting area 111. The first display panel 12 is disposed on one side of the light-emitting surface of the backlight module 11. The first display panel 12 includes multiple reflective display areas A1 and multiple transmissive display areas A2. The first display panel 12 includes a first electrode layer 121 and a first liquid crystal layer 122 sequentially stacked along a direction away from the backlight module 11. The first electrode layer 121 includes a reflective electrode 1211 located in the reflective display area A1 and a light-transmitting electrode 1212 located in the transmissive display area A2. The orthographic projection of the transmissive display area A2 in the first direction x at least partially overlaps with the orthographic projection of the first light-emitting area 111 in the first direction x. The light guide layer 10 is located on the side of the first display panel 12 facing away from the backlight module 11. The first light source 13 is located on one side of the light guide layer 10 along a second direction y, which is perpendicular to the first direction x. Wherein, as... Figures 4 to 6 As shown, the light guide layer 10 includes a first light guide functional layer 101 and a first microstructure layer 102 located on the side of the first light guide functional layer 101 away from the backlight module 11. The first microstructure layer 102 includes a first surface on the side away from the first light guide functional layer 101. A plurality of groove structures 103 are formed on the first surface. The groove structure 103 includes a first bottom wall 104 inclined in a direction away from the first light source 13. A first acute angle α is formed between the first bottom wall 104 and the first surface.

[0061] The display device 1 provided in the present application comprises a backlight module 11 and a first display panel 12 which are stacked, the backlight module 11 comprises a light emitting surface, and the first display panel 12 is located at the light emitting surface side of the backlight module 11. The display device 1 further comprises a light guide layer 10 and a first light source 13, and the first light source 13 is used to provide front light for the first display panel 12 so that the first display panel 12 displays. The first display panel 12 comprises a plurality of reflection display areas A1 and a plurality of transmission display areas A2, so that the display device 1 can perform reflection display and transmission display. Specifically, the first display panel 12 comprises a first electrode layer 121 and a first liquid crystal layer 122 which are stacked in sequence away from the backlight module 11, the first electrode layer 121 comprises a reflection electrode 1211 and a light transmission electrode 1212, the reflection electrode 1211 is located in the reflection display area A1, and the light transmission electrode 1212 is located in the transmission display area A2. The light of the first light source 13 can provide light for the reflection display area A1 after being modulated by the light guide layer 10, and the reflection electrode 1211 reflects the light to realize the display of the reflection display area A1. The orthographic projection of the transmission display area A2 in the first direction x at least partially overlaps with the orthographic projection of the first light emitting area 111 in the first direction x, and the light emitted by the first light emitting area 111 can be displayed after passing through the transmission display area A2, thereby realizing the display of the transmission display area A2.

[0062] In the above embodiments, as Figures 4 to 6As shown, the light guide layer 10 can modulate the light rays incident to the light guide layer 10 from the first light source 13. Specifically, the light guide layer 10 includes a first light guide functional layer 101 and a first microstructure layer 102 located on the side of the first light guide functional layer 101 away from the backlight module 11. The first light guide functional layer 101 includes an incident surface and an emitting surface, the incident surface is located on one side of the first light guide functional layer 101 along a second direction y perpendicular to a first direction x, and the emitting surface faces the first liquid crystal layer 122. The light rays from the first light source 13 are incident to the first light guide functional layer 101 through the incident surface, reflected by the first light guide functional layer 101 to the first microstructure layer 102, and then reflected by the first microstructure layer 102 to be emitted through the emitting surface along the second direction y. Specifically, the first microstructure layer 102 includes a first surface on the side away from the first light guide functional layer 101, and the first surface is formed with a plurality of groove structures 103 including a first bottom wall 104 inclined toward a direction away from the first light source 13, and a first acute angle a is formed between the first bottom wall 104 and the first surface, i.e., the opening of the first acute angle a faces away from the first light source 13. The light rays from the first light source 13 are incident to the first light guide functional layer 101 through the incident surface, reflected by the first light guide functional layer 101 to the first microstructure layer 102, and then emitted through the emitting surface along a third direction s due to the groove structures 103 on the first surface of the first microstructure layer 102, which together modulate the light rays. The light rays incident to the reflective electrode 1211 along the third direction s are reflected by the reflective electrode 1211 and emitted along a target direction f, thereby modulating the angle of the emitted light rays of the display device 1 to achieve the anti-peep function.

[0063] Specifically, in the display device 1 provided by the present application, the structure of the light guide layer 10, the position of the first light source 13, and the liquid crystal first display panel 12 with the reflective electrode 160 are matched to achieve the anti-peep function.

[0064] In the above embodiments, as Figure 5 and Figure 7As shown, the groove structure 103 further includes a second bottom wall 105 arranged along a second direction y with the first bottom wall 104, and a third bottom wall 106 and a fourth bottom wall 107 connected between the first bottom wall 104 and the second bottom wall 105, the third bottom wall 106 and the fourth bottom wall 107 being arranged along a fourth direction z perpendicular to the second direction y and perpendicular to the first direction x. The projection of the groove structure 103 in the first direction x can be a rectangle including a long side L1 perpendicular to the second direction y and a short side L2 parallel to the second direction y, so as to increase the light receiving area of the first bottom wall 104. In the groove structure 103, the third bottom wall 106 and the second bottom wall 105 are transitioned by a first chamfer, the fourth bottom wall 107 and the second bottom wall 105 are transitioned by a second chamfer, and the second bottom wall 105 and the first surface form a second acute angle β, the opening of the second acute angle β being opposite to the opening of the first acute angle α. Specifically, the first chamfer can be 1°; the second chamfer can be 1°; the second acute angle β can be 75°; the length of the long side L1 can be 25.9 μm; the length of the short side L2 can be 14.4 μm; the third bottom wall 106 and the first surface form a third acute angle γ1, and the fourth bottom wall 107 and the first surface form a fourth acute angle γ2, the opening of the third acute angle γ1 being opposite to the opening of the fourth acute angle γ2, both being 70°; the first acute angle α can be 32°, so as to achieve the light emission effect with a target direction range of 20°-30°. The light emission surface of the display device 1 is parallel to the light emission surface of the backlight module 11.

[0065] In an implementable embodiment, the first acute angle α is 15°-45°.

[0066] Specifically, the first acute angle α can be 15°, 20°, 23°, 30°, 32°, 35°, 45°, etc., all of which can achieve good anti-peep effect.

[0067] In an implementable embodiment, as shown in Figure 3 , Figure 5 and Figure 6 , the orthographic projection of the light guide layer 10 on the first display panel 12 covers the first display panel 12, the first bottom wall 104 includes oppositely arranged first and second ends, one end of the first bottom wall 104 being connected with the first surface, and the second end being away from the first surface; along the first direction x, the distance between the second end and the first surface is a first distance h, which gradually increases along the second direction y and in the direction close to the first light source 13 away from the first light source 13.

[0068] Specifically, the first distance h can be the maximum depth of the groove structure 103 along the first direction x.

[0069] Specifically, the larger the first distance h is, the larger the area of the first bottom wall 104 is, the larger the light receiving area is, the larger the modulation amount of the light is, the more light the reflective electrode 1211 receives, and the higher the brightness of the reflective display area A1 is. Therefore, the groove structure 103 can be configured such that the first distance h of the groove structure 103 gradually increases along the second direction y and in a direction from the first light source 13 to a direction away from the first light source 13, so as to increase the light received by the reflective electrode 1211, thereby reducing the brightness difference between the reflective display area A1 close to the first light source 13 and the reflective display area A1 away from the first light source 13, improving the light emission uniformity of the display device 1, and improving the user experience.

[0070] In an available embodiment, as shown in Figure 3 and Figure 8 , the display device includes a sharing mode and a privacy mode. In the sharing mode, the first light source 13 is configured to be turned off, so that the transmissive display area A2 of the first display panel 12 is displayed based on the first light emitting area 111. In the privacy mode, the first light source 13 is configured to be turned on and emit light into the light guide layer 10, the light guide layer 10 is configured to modulate the light and make the modulated light emitted from the surface of the light guide layer 10 facing the first liquid crystal layer 122 to the reflective electrode 1211 along the third direction s, and the reflective electrode 1211 is configured to reflect the modulated light toward the target direction f, and the third direction s and the target direction f are located on opposite sides of the reflection point of the reflective electrode 1211.

[0071] The display device 1 provided in the present application has two working modes, one of which is a sharing mode, as shown in Figure 8 , at this time, the first light source 13 is configured to be turned off, so that the reflective electrode 1211 cannot reflect the light emitted by the first light source 13 for display. The first light emitting area 111 emits light, and the transmissive display area A2 is displayed based on the light emitted by the first light emitting area 111, which contains light of various angles. At this time, the display device 1 can achieve good display effect in large viewing angle and normal viewing angle. The other working mode is a privacy mode, as shown in Figure 3As shown, at this time, the backlight module 11 is configured to be off, that is, the first light-emitting area 111 does not emit light, and at this time, the transmissive display area A2 cannot be displayed based on the first light-emitting area 111. The first light source 13 is configured to be on, the first light source 13 is located on one side of the light guide layer 10 along the second direction y, and the second direction y is perpendicular to the first direction x, so that the first light source 13 emits light into the light guide layer 10 and does not block the display of the display device 1. The light guide layer 10 is configured to modulate the light and make the modulated light exit from the surface of the light guide layer 10 facing the first liquid crystal layer 122 to the reflective electrode 1211 along the third direction s, so as to diverge the light incident into the light guide layer 10 from the side of the light guide layer 10, specifically, diverge along the plane direction perpendicular to the thickness direction of the first display panel 12, and exit to the reflective electrode 1211 along the third direction s. The reflective electrode 1211 is configured to reflect the modulated light towards the target direction f, and the third direction s and the target direction f are located on opposite sides of the reflection point of the reflective electrode 1211, wherein the target direction f is towards the observation position of the user, and the user can observe the light emitted along the target direction f at the observation position. The light emitted along other directions (i.e., non-target direction f, such as the third direction s) is greatly reduced in brightness, so that the non-target direction f can be prevented from being observed, and the display can be achieved. The display device 1 provided in the present application can be switched between the sharing mode and the privacy mode, so as to have a wider application scenario, and help to meet the use demand of the user and improve the user experience.

[0072] The display device 1 provided in the present application can be applied in a vehicle, and specifically can be applied in a co-driver display (CDD display) system, so as to meet the screen use demand of the user at the co-driver position, reduce the influence on the driver at the driver position during driving, and improve the driving safety. Specifically, during use, the arrangement direction of the driver and the co-driver can be parallel to the second direction y in the display device 1, that is, the display device 1 can be placed in a direction that the target direction f is towards the co-driver position, and the driver position can be located on the side of the first light source 13 away from the co-driver along the second direction y. As shown in Figure 9 As shown, when the vehicle is driving, the display device 1 can be in the privacy mode, at this time, only the co-driver can watch the display content, and the driver position cannot watch the display content or the display content is very low in brightness, so that the display content cannot easily affect the line of sight of the driver, so as to improve the safety of the vehicle. As shown in Figure 10 As shown, when the vehicle is in a stationary state, the display device 1 is in the sharing mode, at this time, the driver and the user at the co-driver position can both watch the display content, so as to realize the sharing of the display content. The sharing mode and the privacy mode can be switched by a key, or can be automatically switched according to the start and stop state of the vehicle, which is not particularly limited in the present application.

[0073] In the above embodiment, in the privacy mode, the luminance of the viewing angle other than 45° is not higher than 0.5% of the central luminance, and the user in the viewing angle range cannot see or cannot see the content of the display screen due to insufficient luminance; in the sharing mode, the luminance value in the full viewing angle range follows the conventional viewing angle luminance distribution, that is, the clear picture can be seen in the viewing angle range of 0° to ±89°.

[0074] In the above embodiment, as shown in Figure 8 The backlight module 11 can include a plurality of first light emitting areas 111, which can be arranged at intervals. The first light emitting area 111 corresponds to the transmission display area A2 one by one, and the orthographic projection of the transmission display area A2 in the first direction x is located inside the orthographic projection of the first light emitting area 111 in the first direction x, so that each position in each transmission display area A2 can be displayed, thereby improving the aperture ratio and resolution.

[0075] In a feasible embodiment, as shown in Figure 8 The backlight module 11 further includes a second light emitting area 112 arranged continuously with the first light emitting area 111, and the second light emitting area 112 is arranged integrally with the first light emitting area 111 to form a backlight module 11 that emits light integrally. The projection of the second light emitting area 112 in the first direction x at least partially overlaps the orthographic projection of the reflection display area A1 in the first direction x. Specifically, the orthographic projection of the backlight module 11 on the first display panel 12 can cover the first display panel 12, so that the light emitting position of the backlight module 11 on the orthographic projection of the first display panel 12 covers all the transmission display areas A2, so that each position in each transmission display area A2 can be displayed, thereby improving the aperture ratio and resolution.

[0076] In the above embodiment, the orthographic projection of the transmission display area A2 in the first direction x at least partially overlaps the orthographic projection of the first light emitting area 111 in the first direction x, and preferably, the orthographic projection of the transmission display area A2 in the first direction x is located inside the orthographic projection of the first light emitting area 111 in the first direction x.

[0077] In a feasible embodiment, as shown in Figure 8 The display device 1 includes first display areas 14 and second display areas 15 arranged alternately, the first light emitting area 111 of the backlight module 11 and the transmission display area A2 of the first display panel 12 are located in the first display area 14, and the reflection display area A1 in the first display panel 12 is located in the second display area 15.

[0078] In the above embodiment, the first display area 14 is the main display area in the sharing mode, i.e. in the sharing mode, the brightness of the first display area 14 is greater than the brightness of the second display area 15, wherein the second display area 15 does not emit light or emits light with low brightness. The second display area 15 is the main display area in the privacy mode, i.e. in the privacy mode, the brightness of the second display area 15 is greater than the brightness of the first display area 14, and the first display area 14 does not emit light or emits very weak light, which has little effect on the driver. The first display area 14 and the second display area 15 are alternately arranged so that the display device 1 has a more uniform display effect in both modes.

[0079] In one possible implementation, as shown in Figure 11 and Figure 12 , the display device 1 includes a plurality of sub-pixels 16, the plurality of sub-pixels 16 includes reflective sub-pixels 161 and transmissive sub-pixels 162, the reflective sub-pixels 161 include reflective electrodes 1211, the transmissive sub-pixels 162 include light-transmissive electrodes 1212, the first display area 14 includes a first repeating unit 141, the first repeating unit 141 includes reflective sub-pixels 161 of a plurality of light-emitting colors, and the second display area 15 includes a plurality of second repeating units 151, the second repeating unit 151 includes transmissive sub-pixels 162 of a plurality of light-emitting colors.

[0080] In the above embodiment, the first display area 14 and the second display area 15 are both at the pixel level, wherein the first repeating unit 141 includes at least one reflective pixel, and the reflective pixel includes reflective sub-pixels 161 of a plurality of light-emitting colors, and the second repeating unit 151 includes at least one transmissive pixel, and the transmissive pixel includes transmissive sub-pixels 162 of a plurality of light-emitting colors. The pixel arrangement in the first repeating unit 141 and the second repeating unit 151 is the same, so as to improve the uniformity of the display device 1 and simplify the preparation method.

[0081] In another possible implementation, as shown in Figure 2 and Figure 3 , the display device 1 includes a plurality of sub-pixels 16, part of each sub-pixel 16 is located in the first display area 14 and part of each sub-pixel 16 is located in the second display area 15, and the sub-pixel 16 includes an electrode 160, the electrode 160 includes a light-transmissive electrode 1212 and a reflective electrode 1211. The light-transmissive electrode 1212 and the reflective electrode 1211 in each sub-pixel 16 can be connected to be powered synchronously, and for the convenience of preparation, the light-transmissive electrode 1212 can partially extend to the side of the reflective electrode 1211 away from the first liquid crystal layer 122.

[0082] In one possible implementation, as shown in Figure 3 , Figure 8 and Figure 12As shown, the first display panel 12 further includes a first lower polarizer 124, a first array substrate 125, a first color film substrate 126, and a first upper polarizer 127. The first lower polarizer 124 is located on the side of the first display panel 12 close to the backlight module 11. The first array substrate 125 is located between the first lower polarizer 124 and the first electrode layer 121. The first color film substrate 126 is located on the side of the first liquid crystal layer 122 away from the first electrode layer 121. The first upper polarizer 127 is located on the side of the first color film substrate 126 away from the first liquid crystal layer 122. By setting the first upper polarizer 127 and the first lower polarizer 124, the influence of external ambient light can be shielded, and in the privacy mode, the light source of the reflection display area A1 can be made to come from the first light source 13.

[0083] In the above embodiment, the first display panel 12 includes the first lower polarizer 124, the first array substrate 125, the first electrode layer 121, the first liquid crystal layer 122, the first color film substrate 126, and the light guide layer 10 stacked in the direction away from the backlight module 11, and further includes the first upper polarizer 127. The first upper polarizer 127 is located between the light guide layer 10 and the first color film substrate 126, or the first upper polarizer 127 is located on the side of the light guide layer 10 away from the first color film substrate 126.

[0084] In the above embodiment, the first color film substrate 126 includes a glass substrate and a first filter layer located on the side of the glass substrate facing the first liquid crystal layer 122. The first filter layer includes a plurality of first filter portions 1261 of different light transmission colors, and the first filter portions 1261 correspond to the colors of the sub-pixels 16. The first filter portions 1261 determine the final light emission color of the sub-pixels 16.

[0085] In a feasible embodiment, as shown in Figure 3 , Figure 8 and Figure 12 , the first array substrate 125 includes a driving circuit, and the driving circuit includes a transistor 1251 and a capacitor 1252. The projection of the transistor 1251 and the capacitor 1252 in the first direction x does not overlap the transmission display area A2, and the light transmission electrode 1212 and the reflection electrode 1211 are connected to the driving circuit.

[0086] In the above embodiment, the first array substrate 125 includes a driving circuit, and the driving circuit is used to drive the sub-pixels 16 to work. The driving circuit includes a transistor 1251 and a capacitor 1252. The transistor 1251 and the capacitor 1252 can include a metal material film layer, so that the light transmission rate of the position where the transistor 1251 and the capacitor 1252 are formed in the first array substrate 125 is relatively low. Therefore, the projection of the transistor 1251 and the capacitor 1252 in the first direction x does not overlap the transmission display area A2, so as to improve the light transmission rate of the transmission display area A2, thereby improving the display effect of the first display area 14.

[0087] In the above embodiment, the light-transmitting electrode 1212 and the reflective electrode 1211 are connected with the driving circuit to drive the light-transmitting electrode 1212 and the reflective electrode 1211 to work through the driving circuit.

[0088] In a feasible embodiment, as shown in Figure 12 , the reflective electrode 1211 and the light-transmitting electrode 1212 are arranged in the same layer in the first electrode layer 121; or as shown in Figure 8 , the first electrode layer 121 includes an extension part arranged in the same layer with the light-transmitting electrode 1212, the extension part corresponds to the light-transmitting electrode 1212 one by one and is connected with each other, and the reflective electrode 1212 is located on the side of the extension part away from the backlight module 11.

[0089] In the above embodiment, as shown in Figure 2 and Figure 3 , when each sub-pixel 16 is partially located in the first display area 14 and partially located in the second display area 15, the light-transmitting electrode 1212 can be connected with the reflective electrode 1211 and then connected with the driving circuit synchronously, at this time, the light-transmitting electrode 1212 can be connected with the reflective electrode 1211 through the extension part located on the side of the reflective electrode 1211 away from the first liquid crystal layer 122. Specifically, the transistor 1251 and the capacitor 1252 can be located in the first display area 14 and not located in the second display area 15, and the light-transmitting electrode 1212 can be partially extended to the first display area 14 to be connected with the transistor 1251 or the capacitor 1252.

[0090] As shown in Figure 11 and Figure 12 , when the first display area 14 includes a first repeating unit 141, the first repeating unit 141 includes reflective sub-pixels 161 of multiple light-emitting colors, and the second display area 15 includes a second repeating unit 151, the second repeating unit 151 includes transmissive sub-pixels 162 of multiple light-emitting colors, the light-transmitting electrode 1212 and the reflective electrode 1211 can be connected with the driving circuit respectively, the light-transmitting electrode 1212 can be connected with the driving circuit through a transparent conductive trace (not shown in the figure), and the material of the transparent conductive trace can include indium tin oxide, indium zinc oxide, etc., so as to reduce the influence on the light transmittance of the transmissive display area A2. Specifically, the transistor 1251 and the capacitor 1252 can be located in the first display area 14, and the transparent conductive trace can be extended from the second display area 15 to the first display area 14 to be connected with the transistor 1251 or the capacitor 1252.

[0091] In a feasible embodiment, as shown in Figure 13As shown, the backlight module 11 includes a second light source 110 and a light guide plate 113, the second light source 110 is located on the side of the light guide plate 113 away from the first display panel 12, or the second light source 110 is located on any side of the light guide plate 113 along the second direction y. The light guide plate 113 is used to mix the light emitted by the second light source 110 to achieve the effect of a surface light source, and to improve the uniformity of the light emitted by the backlight module 11.

[0092] Specifically, the light guide plate 113 includes a second light guide function layer and a second microstructure layer, a diffusion layer, a prism layer and a light enhancement layer stacked in the direction of the first display panel 12 along the second light guide function layer. The second microstructure layer has a hemispherical recess structure formed thereon, and the diffusion layer, the prism layer and the light enhancement layer can realize uniform light mixing effect of the light, and improve the uniformity of the light emitted by the backlight module 11. The light guide plate 113 includes a light entrance surface, the light entrance surface of the light guide plate 113 is located on one side of the light guide plate 113 in the second direction y or away from the first display panel 12, and the second light source 110 is located on the side of the light entrance surface of the light guide plate 113 away from the light guide plate 113, forming a side-in backlight module 11 or a direct type backlight module 11.

[0093] In the above embodiment, the display device 1 includes a backlight module 11, a first display panel 12, a light guide layer 10 and a first light source 13. The backlight module 11 includes a light guide plate 113 and a second light source 110. The following describes two working modes of the display device 1:

[0094] When the display device 1 is in the privacy mode: the first light source 13 is configured to be turned on, the backlight module 11 is configured to be turned off, the first display panel 12 is in a display state, the reflective display area A1 is displayed, and plays a main display function. The transmissive display area A2 cannot be provided with backlight because the light-transmitting electrode 1212 is used and the backlight module 11 does not emit light at this time. The light of the first light source 13 is partially scattered to the transmissive display area A2, so that the transmissive display area A2 can be weakly displayed or not displayed.

[0095] When the display device 1 is in the sharing mode: the first light source 13 is configured to be turned off, the backlight module 11 is configured to be turned on, the first display panel 12 is in a display state, and the transmissive display area A2 is displayed, which is the main display area of the display device 1 in the sharing mode. The transmittance of the reflective display area A1 to the light emitted by the backlight module 11 is extremely low, and the first light source 13 does not emit light at this time. Although part of the light emitted by the backlight module 11 enters the reflective display area A1, the display brightness of the reflective display area A1 is very low or not displayed.

[0096] In the above embodiment, the transmission axis of the first lower polarizer 124 and the transmission axis of the first upper polarizer 127 can be perpendicular to each other, and the liquid crystal in the first liquid crystal layer 122 can be nematic liquid crystal. A spacer layer 128 is arranged between the first array substrate 125 and the first electrode layer 121, and the thickness of the spacer layer 128 located in the transmissive display area A2 is smaller than the thickness of the spacer layer 128 located in the reflective display area A1, so that the cell gap of the transmissive display area A2 is greater than the cell gap of the reflective display area A1, so that the part of the first liquid crystal layer 122 located in the reflective display area A1 functions as a 1 / 4 wave plate, and the part of the first liquid crystal layer 122 located in the transmissive display area A2 functions as a 1 / 2 wave plate. Taking the transmission axis of the first lower polarizer as the horizontal direction and the transmission axis of the first upper polarizer as the vertical direction as an example: in the sharing mode, the light emitted by the backlight module 11 passes through the first lower polarizer 124, the first liquid crystal layer 122 and the first upper polarizer 127 in the transmissive display area A2 in turn, and the light emitted by the backlight module 11 can be horizontally polarized light after passing through the first lower polarizer 124. The part of the first liquid crystal layer 122 located in the transmissive display area A2 functions as a 1 / 2 wave plate, and the horizontally polarized light rotates 90° to become vertically polarized light after passing through the part of the first liquid crystal layer 122 located in the transmissive display area A2. Since the transmission axes of the first lower polarizer 124 and the first upper polarizer 127 are perpendicular to each other, the light passing through the first liquid crystal layer 122 can be emitted by the first upper polarizer 127 at this time. In the privacy mode, the light of the first light source 13 passes through the first upper polarizer 127 after passing through the light guide layer 10, and becomes vertically polarized light, the part of the first liquid crystal layer 122 located in the reflective display area A1 functions as a 1 / 4 wave plate, and the vertically polarized light becomes circularly polarized light after passing through the part of the first liquid crystal layer 122 located in the reflective display area A1. The handedness of the circularly polarized light changes after being reflected by the reflective electrode 1211, and then converts into linearly polarized light after passing through the part of the first liquid crystal layer 122 located in the reflective display area A1, which can be emitted by the first upper polarizer 127.

[0097] In a possible implementation, as shown in FIG. 1, Figure 14 The backlight module 11 further includes a second display panel 114, which is located between the light guide plate 113 and the first display panel 12. The second display panel 114 includes a second lower polarizer 1141, a second array substrate 1142, a second electrode layer 1143, a second liquid crystal layer 1144, a second color filter substrate 1145 and a second upper polarizer 1146, which are stacked in the direction from the light guide plate 113 to the first display panel 12.

[0098] In the above embodiment, the second display panel 114 is a liquid crystal display panel and displays based on the backlight of the light guide plate 113 and the second light source 110. The second display panel 114 includes a second lower polarizer 1141, a second array substrate 1142, a second electrode layer 1143, a second color filter substrate 1145, a second upper polarizer 1146, which are stacked in the direction indicated by the light guide plate 113 to the first display panel 12. The second array substrate 1142 includes a driving circuit and a common electrode therein, and the common electrode and the second electrode layer 1143 are both connected to the driving circuit in the second array substrate 1142 to control the deflection of the liquid crystal in the second liquid crystal layer 1144, thereby displaying.

[0099] In the above embodiment, the display device 1 includes the backlight module 11, the first display panel 12, the light guide layer 10 and the first light source 13, and the backlight module 11 includes the light guide plate 113, the second light source 110 and the second display panel 114. The following describes two working modes of the display device 1:

[0100] When the display device 1 is in the privacy mode: the first light source 13 is configured to be turned on, the backlight module 11 is configured to be turned off, the first display panel 12 is in the display state, the reflective display area A1 displays and plays a major display function, and the transmissive display area A2 cannot be displayed by the second display panel 114 because the transmissive electrode 1212 is used and the backlight module 11 does not emit light at this time, so the first light source 13 cannot provide backlight for the transmissive display area A2. Part of the light of the first light source 13 is scattered to the transmissive display area A2, so that the transmissive display area A2 can display weakly or not display. At this time, the second light source 110 is in the off state, and the second display panel 114 can be in the off state.

[0101] When the display device 1 is in the sharing mode: the first light source 13 is configured to be turned off, the second light source 110 and the second display panel 114 are configured to be turned on, the first display panel 12 is in a non-display and non-off state, and the deflection angles of the liquid crystals in the first liquid crystal layer 122 are all the same. The first display panel 12 is only used to realize the light transmission function. The second display panel 114 displays based on the light guide plate 113 and the second light source 110. The area in the second display panel 114 opposite to the transmissive display area A2 is displayed by the transmissive display area A2, thereby displaying. As the area playing a major display role in the display device 1 in the sharing mode, the transmissive display area A2 displays through the display screen of the second display panel 114. The transmittance of the reflective display area A1 to the light emitted by the second display panel 114 is very low, and the first light source 13 does not emit light at this time. Although part of the light with a large angle enters the reflective display area A1, the display brightness of the reflective display area A1 is very low or not displayed.

[0102] In the above embodiment, the backlight module 11 and the first display panel 12 are fixed by the adhesive layer 17, and the adhesive layer 17 can be optical glue. The adhesive layer 17 is located between the first display panel 12 and the second display panel 114.

[0103] In the above embodiment, the first display panel 12 includes the first color film substrate 126 located between the first liquid crystal layer 122 and the light guide layer 10. The first color film substrate 126 includes a first filter layer, and the first filter layer includes a plurality of first filter parts 1261 of different light transmission colors. The second color film substrate 1145 includes a second filter layer, and the second filter layer includes a plurality of second filter parts 1147 of different light transmission colors. The second filter parts 1147 correspond to the colors of the sub-pixels 16. The projections of the first filter parts 1261 and the second filter parts 1147 of the same light transmission color on the backlight module 11 at least partially overlap, i.e., the first filter parts 1261 and the second filter parts 1147 in each sub-pixel 16 are of the same color.

[0104] The projections of the first filter parts 1261 and the second filter parts 1147 of the same light transmission color on the backlight module 11 at least partially overlap. Preferably, the projections of the first filter parts 1261 and the second filter parts 1147 of the same light transmission color on the backlight module 11 coincide.

[0105] Specifically, each sub-pixel 16 includes the first filter part 1261 and the second filter part 1147 arranged opposite to each other along the first direction x. To ensure that the light emitted by the backlight module 11 can be emitted through the first display panel 12, it is necessary to satisfy that the first filter part 1261 located on the side of the second filter part 1147 away from the backlight module 11 is of the same color as the second filter part 1147.

[0106] In the above embodiment, the transmittance of the first filter part 1261 is greater than the transmittance of the second filter part 1147.

[0107] The reflective display area A1 of the first display panel 12 is displayed based on the first light source 13. Therefore, the transmittance of the first filter part 1261 is set to be low to meet the light transmission requirement of the first light source 13, so as to improve the light emission brightness of the reflective display area A1.

[0108] When the display device 1 is in the sharing mode, the transmissive display area A2 transmits the picture displayed by the second display panel 114. The transmittance of the second filter part 1147 in the second display panel 114 can be set to be higher than the transmittance of the first filter part 1261, so as to improve the color gamut of the display picture.

[0109] In another possible embodiment, as Figure 15As shown, the backlight module 11 includes an organic light emitting diode first display panel 115, the organic light emitting diode first display panel 115 includes a third array substrate 1151 and a light emitting unit 1152, the light emitting unit 1152 is located between the third array substrate 1151 and the first display panel 12, and the light emitting unit 1152 includes a first electrode 1153, a light emitting layer, and a second electrode 1154 which are stacked.

[0110] Specifically, the backlight module 11 can include the third array substrate 1151 and the light emitting unit 1152 located between the third array substrate 1151 and the first display panel 12. The light emitting unit 1152 includes the first electrode 1153, the light emitting layer 1155, and the second electrode 1154 which are stacked. The first electrode 1153 is located on the side of the third array substrate 1151 close to the first display panel 12, the number of the first electrode 1153 is multiple, and the multiple first electrodes 1153 are arranged at intervals. The second electrode 1154 can be an electrode arranged in an entire surface. The light emitting layer 1155 includes a red light emitting functional part, a green light emitting functional part, and a blue light emitting functional part, each sub-pixel 16 includes one light emitting unit 1152, and each light emitting unit 1152 includes one of the red light emitting functional part, the green light emitting functional part, and the blue light emitting functional part.

[0111] The organic light emitting diode first display panel 115 can further include a third filter layer located on the light emitting unit 1152 away from the third array substrate 1151, so as to further improve the purity of light emission.

[0112] In the above embodiment, the display device 1 includes the organic light emitting diode display panel 115, the first display panel 115, the light guide layer 10, and the first light source 13. The following specifically describes two working modes of the display device 1:

[0113] When the display device 1 is in the anti-peep mode: the first light source 13 is configured to be turned on, the organic light emitting diode display panel 115 does not work, the first display panel 12 is in a display state, the reflective display area A1 is displayed, and plays a main display function, and the transmissive display area A2 cannot be provided with backlight because the transmissive display area A2 adopts the light-transmitting electrode 1212 and the organic light emitting diode display panel 115 does not emit light at this time, and the light of the first light source 13 is partially scattered to the transmissive display area A2, so that the transmissive display area A2 can be weakly displayed or not displayed.

[0114] When the display device 1 is in the sharing mode: the first light source 13 is configured to be off, the organic light-emitting diode display panel 115 is configured to work, the first display panel 12 is in a non-display, non-off state, the deflection angles of the liquid crystals in the first liquid crystal layer 122 are all the same, and the first display panel 12 is only used to realize the light transmission function. The organic light-emitting diode display panel 115 displays, the area opposite to the transmission display area A2 in the organic light-emitting diode display panel 115 transmits through the transmission display area A2, so as to display, that is, the transmission display area A2 displays by transmitting the display picture of the organic light-emitting diode display panel 115, and the transmission display area A2 serves as the area that plays a main display role in the display device 1 in the sharing mode; the reflection display area A1 has a very low transmittance to the light emitted by the organic light-emitting diode display panel 115, and the first light source 13 does not emit light at this time. Although part of the large-angle light in the organic light-emitting diode display panel 115 enters the reflection display area A1, the display brightness of the reflection display area A1 is very low or no display.

[0115] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A display device, characterized by comprising: The display device comprises a backlight module, a first display panel, a light guide layer, and a first light source. The backlight module comprises at least one first light-emitting area. The first display panel is arranged on the light-emitting surface side of the backlight module, and comprises a plurality of reflective display areas and a plurality of transmissive display areas. The first display panel comprises a first electrode layer and a first liquid crystal layer arranged in sequence in a direction away from the backlight module. The first electrode layer comprises reflective electrodes in the reflective display areas and light-transmissive electrodes in the transmissive display areas. The transmissive display areas are arranged at least partially overlapping the first light-emitting areas in a first direction.

2. The display device according to claim 1, wherein The light guide layer is arranged on the side of the first display panel away from the backlight module. The first light source is arranged on the side of the light guide layer in a second direction perpendicular to the first direction. The light guide layer comprises a first light guide functional layer and a first microstructure layer arranged on the side of the first light guide functional layer away from the backlight module.

3. The display device according to claim 1 or 2, wherein The first microstructure layer comprises a first surface on the side away from the first light guide functional layer.

4. The display device according to claim 3, wherein The first surface is formed with a plurality of groove structures.

5. The display device according to claim 1, wherein The groove structures comprise first bottom walls inclined toward a direction away from the first light source. The first bottom walls and the first surface form a first acute angle. The display device comprises a sharing mode and a privacy mode. In the sharing mode, the first light source is configured to be turned off, so that the transmissive display areas of the first display panel are displayed based on the first light-emitting areas. In the privacy mode, the first light source is configured to be turned on and emit light into the light guide layer. The light guide layer is configured to modulate the light and make the modulated light exit from the surface of the light guide layer toward the first liquid crystal layer in a third direction to the reflective electrodes. The reflective electrodes are configured to reflect the modulated light toward a target direction. The third direction and the target direction are on opposite sides of the reflection point of the reflective electrodes. The first acute angle ranges from 15° to 45°. The orthographic projection of the light guide layer on the first display panel covers the first display panel. The first bottom walls comprise first and second ends arranged oppositely. One end is connected to the first surface, and the second end is away from the first surface. In the first direction, the distance between the second end and the first surface is a first distance. In the second direction and in the direction close to the first light source away from the first light source, the first distance gradually increases. The first display panel further comprises a first lower polarizing plate, a first array substrate, a first color filter substrate, and a first upper polarizing plate. The first lower polarizing plate is arranged on the side of the first display panel close to the backlight module. The first array substrate is arranged between the first lower polarizing plate and the first electrode layer. The first color filter substrate is arranged on the side of the first liquid crystal layer away from the first electrode layer. The first upper polarizing plate is arranged on the side of the first color filter substrate away from the first liquid crystal layer. The first upper polarizing plate is arranged between the light guide layer and the first color filter substrate, or the first upper polarizing plate is arranged on the side of the light guide layer away from the first color filter substrate.

6. The display device according to claim 5, wherein The first array substrate comprises a drive circuit, the drive circuit comprises a transistor and a capacitor, a projection of the transistor and the capacitor in the first direction does not overlap with a projection of the transmissive display area in the first direction, the light-transmitting electrode, the reflective electrode and the drive circuit are connected.

7. The display device according to claim 1, wherein In the first electrode layer, the reflective electrode and the light-transmitting electrode are arranged in the same layer; or The first electrode layer comprises an extension arranged in the same layer as the light-transmitting electrode, the extension corresponds to the light-transmitting electrode one by one and is connected with each other, and the reflective electrode is located on a side of the extension away from the backlight module.

8. The display device according to claim 1, wherein The backlight module comprises a second light source and a light guide plate, the second light source is located on a side of the light guide plate away from the first display panel, or the second light source is located on any side of the light guide plate along the second direction.

9. The display device according to claim 8, wherein The backlight module further comprises a second display panel, the second display panel is located between the light guide plate and the first display panel, and the second display panel comprises a second lower polarizer, a second array substrate, a second electrode layer, a second liquid crystal layer, a second color film substrate and a second upper polarizer arranged in a stacking manner along a direction from the light guide plate to the first display panel.

10. The display device according to claim 9, wherein The first display panel comprises a first color film substrate located between the first liquid crystal layer and the light guide layer, the first color film substrate comprises a first filter layer, and the first filter layer comprises a plurality of first filter portions of a plurality of light-transmitting colors; The second color film substrate comprises a second filter layer, and the second filter layer comprises a plurality of second filter portions of a plurality of colors; The projections of the first filter portions and the second filter portions of the same light-transmitting color on the backlight module at least partially overlap.

11. The display device according to claim 10, wherein The transmittance of the first filter portions is greater than the transmittance of the second filter portions.

12. The display device according to claim 1, wherein The backlight module further comprises a second light-emitting area continuously arranged with the first light-emitting area, and a projection of the second light-emitting area in the first direction at least partially overlaps with a projection of the reflective display area in the first direction.

13. The display device of claim 1, wherein, The backlight module comprises an organic light-emitting diode display panel, the organic light-emitting diode display panel comprises a third array substrate and a light-emitting unit, the light-emitting unit is located between the third array substrate and the first display panel, and the light-emitting unit comprises a first electrode, a light-emitting layer and a second electrode arranged in a stacking manner.

14. The display device of claim 1, wherein The display device comprises first display areas and second display areas arranged alternately, the first light-emitting area of the backlight module and the transmissive display area of the first display panel are located in the first display areas, and the reflective display area in the first display panel is located in the second display areas; The display device comprises a plurality of sub-pixels, part of each sub-pixel is located in the first display area and part of each sub-pixel is located in the second display area, the sub-pixel comprises an electrode, and the electrode comprises the light-transmitting electrode and the reflective electrode; or The display device includes a plurality of sub-pixels, the plurality of sub-pixels including transmissive sub-pixels and reflective sub-pixels, the reflective sub-pixels including the reflective electrodes, the transmissive sub-pixels including the light-transmissive electrodes, the first display area including first repeating units, the first repeating units including the reflective sub-pixels of a plurality of light-out colors, the second display area including a plurality of second repeating units, the second repeating units including the transmissive sub-pixels of a plurality of light-out colors.

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