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 present application belongs to the technical field of display modules, and in particular, relates to a display device. Background Art

[0002] At present, the in-vehicle display products are mainly divided into the ICD display system (Instrument Cluster Display) in front of the driver, the central control display CID (Central Information Display), and the CDD display system (Co-driver display). The CDD display system can enrich the functions of the vehicle and enhance the user experience of the co-driver. In order to improve the safety performance of the vehicle while ensuring the richness of the vehicle's functions, it is necessary to make the CDD display system so that the co-driver position can see the display screen clearly while the main driver position cannot see the real screen during the driving process of the vehicle, that is, to realize anti-peeping display for the main driver to reduce interference to the driver. When the vehicle stops, both the co-driver position and the main driver position can see the display screen clearly, so as to realize the sharing of the display screen for the main driver position and the co-driver position. However, the display panel in the related technology cannot meet the functional requirements of integrating anti-peeping and sharing and switchable anti-peeping and sharing. Summary of the invention

[0003] The purpose of this application is to at least solve the problem that the display panel cannot meet the functional requirements of integrating anti-peeping and sharing and switchable anti-peeping and sharing. This purpose is achieved through the following technical solutions:

[0004] The present invention proposes a display device, characterized in that it includes:

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

[0006] a first display panel, arranged at a light emitting surface side 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 sequentially stacked in a direction away from the backlight module, the first electrode layer comprising a reflective electrode located in the reflective display area and a transmissive electrode located in the transmissive display area, an orthographic projection of the transmissive display area in the first direction at least partially overlapping with an orthographic 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 is located at one side of the light guide layer along a second direction, wherein the second direction is perpendicular to the first direction;

[0009] Among them, the light guiding layer includes a first light guiding functional layer and a first microstructure layer located on the side of the first light guiding functional layer away from the backlight module, the first microstructure layer includes a first surface away from the side of the first light guiding functional layer, the first surface is formed with a plurality of groove structures, the groove structure includes 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 includes a stacked backlight module and a first display panel, the backlight module includes a light emitting surface, and the first display panel is located on the light emitting surface side of the backlight module. The display device also includes 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 so that the first display panel can display. Among them, the first display panel includes a plurality of reflective display areas and a plurality of transmissive display areas, so that the display device can perform reflective display and transmissive display. Specifically, the first display panel includes a first electrode layer and a first liquid crystal layer stacked in sequence in a direction away from the backlight module, the first electrode layer includes a reflective electrode and a light-transmitting electrode, the reflective electrode is located in the reflective display area, and the light-transmitting electrode is located in the transmissive display area. The light of the first light source can provide light for the reflective display area after being modulated by the light guide layer, and the reflective electrode reflects the above light to realize the display of the reflective display area. The orthographic projection of the transmissive display area in the first direction is at least partially overlapped with the orthographic projection of the first light-emitting area in the first direction, and the light emitted by the first light-emitting area can be displayed after passing through the transmissive display area, thereby realizing the display of the transmissive display area.

[0011] In the above-mentioned embodiment, the light-guiding layer can modulate the light incident from the first light source into the light-guiding layer. Specifically, the light-guiding layer includes a first light-guiding functional layer and a first microstructure layer, and the first microstructure layer is located on the side of the first light-guiding functional layer away from the backlight module. The first light-guiding functional layer includes a light-entering surface and a light-emitting surface, and the light-entering surface is located on the side of the first light-guiding functional layer along the second direction, and the second direction is perpendicular to the first direction. The light-emitting surface faces the first liquid crystal layer. The light of the first light source is incident on the first light-guiding functional layer from the light-entering surface, and is reflected from the first light-guiding functional layer to the first microstructure layer, and then reflected from the first microstructure layer to be emitted from the light-emitting surface along the second direction. Specifically, the first microstructure layer includes a first surface facing away from the first light-guiding functional layer, and a plurality of groove structures are formed on the first surface, and the groove structure includes 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, that is, the opening of the first acute angle faces the side away from the first light source. The light from the first light source is incident on the first light guide functional layer from the light incident surface, and is reflected from the first light guide functional layer to the first microstructure layer. Since the first surface of the first microstructure layer has a groove structure, the first surface and the groove structure work together to modulate the light, so that the light can be emitted from the light emitting surface along the third direction. The light incident on the reflective electrode along the third direction is reflected by the reflective electrode and then emitted in the target direction, thereby modulating the angle of the light emitted from the display device to achieve anti-peeping.

[0012] Specifically, in the display device provided in the present application, the anti-peeping function is achieved by adjusting the structure of the light guide layer, the position of the first light source and matching the liquid crystal first display panel with a reflective electrode.

[0013] In some embodiments of the present application, the display device includes a sharing mode and an anti-peeping 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 performs display based on the first light emitting area;

[0015] In the anti-peep mode, the first light source is configured to be turned on and inject light into the light guide layer, the light guide layer is configured to modulate the light and make the modulated light emitted from the surface of the light guide layer facing the first liquid crystal layer along a third direction to the reflective electrode, and 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 a reflection point of the reflective electrode.

[0016] In some embodiments of the present application, the degree range of the first acute angle is 15°-45°.

[0017] In some embodiments of the present application, the orthographic projection of the light guide layer on the first display panel covers the first display panel, and the first bottom wall includes a first end and a second end arranged opposite to each other, one end is connected to the first surface, and the second end is away from the first surface; along the first direction, the distance between the second end and the first surface is a first distance, and along the second direction and in a direction from close to the first light source to away from the first light source, the first distance gradually increases.

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

[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 filter 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 filter substrate away from the first liquid crystal layer;

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

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

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

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

[0027] In some embodiments of the present application, the backlight module includes 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 also includes a second display panel, which is located between the light guide plate and the first display panel, and the second display panel includes 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 stacked along the direction from the light guide plate to the first display panel.

[0029] In some embodiments of the present application, the first display panel includes a first color filter substrate located between the first liquid crystal layer and the light guide layer, the first color filter substrate includes a first filter layer, and the first filter layer includes first filter parts of multiple light-transmitting colors;

[0030] The second color filter substrate includes a second filter layer, and the second filter layer includes second filter parts of multiple colors;

[0031] The projections of the first filter part and the second filter part having the same light transmission color on the backlight module at least partially overlap.

[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 also includes a second light-emitting area continuously arranged with the first light-emitting area, and the projection of the second light-emitting area in the first direction at least partially overlaps with the orthographic projection of the reflective display area in the first direction.

[0034] In some embodiments of the present application, the backlight module includes an organic light-emitting diode display panel, the organic light-emitting diode display panel includes 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 includes a first electrode, a light-emitting layer, and a second electrode stacked together.

[0035] In some embodiments of the present application, the display device includes a first display area and a second display area that 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, each of which is partially located in the first display area and partially 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,

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

[0038] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Moreover, the same reference numerals are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

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

[0040] Figure 2 yes Figure 1 A schematic diagram of an enlarged view of the middle Q region;

[0041] Figure 3 yes Figure 2 A cross-sectional view of the middle line M-M' in an anti-peeping mode;

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

[0043] Figure 5 is a schematic structural diagram of a light guide layer provided in an embodiment of the present application;

[0044] Figure 6 This 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 This is a right side 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 yes Figure 2 A cross-sectional view of the middle line M-M' in a shared mode;

[0047] Fig. 9 is a full viewing angle distribution diagram of a display panel in an anti-peeping mode provided by an embodiment of the present application;

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

[0049] Fig.11 yes Figure 1 Schematic diagram of another magnified view of the mid-Q region;

[0050] Fig.12 yes Fig.11 A cross-sectional view along the middle line P-P';

[0051] Fig.13 yes Figure 2 Another cross-sectional view along the middle line M-M';

[0052] Fig.14 yes Fig.11 Another cross-sectional view along the P-P' line;

[0053] Fig.15 yes Fig.11 Another cross-sectional view along the line PP'.

[0054] The reference numerals 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 filter unit; 115. Organic light emitting device 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-transmitting electrode; 122, first liquid crystal layer; 10, light-guiding layer; 101, first light-guiding functional layer; 102, first a microstructure layer; 103, groove structure; 104, first bottom wall; α, 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; β, second acute angle; γ1, third acute angle; γ2, fourth acute angle; 124, first lower polarizer; 125, first array substrate; 1251, transistor; 1252, capacitor; 126, first color Film substrate; 1261, first filter portion; 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] The exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although the exemplary embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided in order to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0057] It should be understood that the terms used herein are only for the purpose of describing specific example embodiments and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "include", "comprise", "contain", and "have" are inclusive, and therefore specify the existence of stated features, steps, operations, elements and / or parts, but do not exclude the existence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not interpreted as necessarily requiring them to be performed in the specific order described or illustrated, unless the execution order is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0058] Although the terms first, second, third, etc. can be used in the text to describe multiple 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 only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0059] For ease of description, spatial relative terms may be used herein to describe the relationship of one element or feature relative to another element or feature as shown in the figure, such as "inside", "outside", "inner side", "outer side", "below", "below", "above", "above", etc. Such spatial relative terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figure. For example, if the device in the figure is turned over, then the elements described as "below other elements or features" or "below other elements or features" will 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 can be oriented otherwise (rotated 90 degrees or in other directions) and the spatial relative descriptors used in the text are interpreted accordingly.

[0060] like Figures 1 to 6 As shown, according to an embodiment of the present application, a display device 1 is proposed, comprising a backlight module 11, a first display panel 12, a light guide layer 10 and a first light source 13. The backlight module 11 comprises at least one first light-emitting area 111. The first display panel 12 is arranged on the light-emitting side of the backlight module 11, and the first display panel 12 comprises a plurality of reflective display areas A1 and a plurality of transmissive display areas A2. The first display panel 12 comprises a first electrode layer 121 and a first liquid crystal layer 122 which are sequentially stacked in a direction away from the backlight module 11. The first electrode layer 121 comprises a reflective electrode 1211 located in the reflective display area A1 and a transmissive electrode 1212 located in the transmissive display area A2. The orthographic projection of the transmissive display area A2 in the first direction x is at least partially overlapped 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 away from the backlight module 11. The first light source 13 is located on the side of the light guide layer 10 along the second direction y, and the second direction y is perpendicular to the first direction x. Wherein, as Figures 4 to 6 As shown, the light guiding layer 10 includes a first light guiding functional layer 101 and a first microstructure layer 102 located on the side of the first light guiding functional layer 101 away from the backlight module 11, the first microstructure layer 102 includes a first surface away from the first light guiding 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 toward a direction away from the first light source 13, and 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 includes a backlight module 11 and a first display panel 12 which are stacked, the backlight module 11 includes a light emitting surface, and the first display panel 12 is located on the light emitting surface side of the backlight module 11. The display device 1 also includes a light guide layer 10 and a first light source 13, the first light source 13 is used to provide front light for the first display panel 12, so that the first display panel 12 can display. Among them, the first display panel 12 includes a plurality of reflective display areas A1 and a plurality of transmissive display areas A2, so that the display device 1 can perform reflective display and transmissive display. Specifically, the first display panel 12 includes a first electrode layer 121 and a first liquid crystal layer 122 which are stacked in sequence in a direction away from the backlight module 11, the first electrode layer 121 includes a reflective electrode 1211 and a transmissive electrode 1212, the reflective electrode 1211 is located in the reflective display area A1, and the transmissive electrode 1212 is located in the transmissive display area A2. The light of the first light source 13 can provide light for the reflective display area A1 after being modulated by the light guide layer 10, and the reflective electrode 1211 reflects the above light to realize the display of the reflective display area A1. The orthographic projection of the transmissive display area A2 in the first direction x and the orthographic projection of the first light-emitting area 111 in the first direction x are at least partially overlapped, and the light emitted by the first light-emitting area 111 can be displayed after passing through the transmissive display area A2, thereby realizing the display of the transmissive display area A2.

[0062] In the above implementation mode, if Figures 4 to 6As shown, the light guide layer 10 can modulate the light from the first light source 13 incident into the light guide layer 10. Specifically, the light guide layer 10 includes a first light guide functional layer 101 and a first microstructure layer 102, and the first microstructure layer 102 is 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 a light incident surface and a light emitting surface, and the light incident surface is located on one side of the first light guide functional layer 101 along the second direction y, and the second direction y is perpendicular to the first direction x. The light emitting surface faces the first liquid crystal layer 122. The light from the first light source 13 is incident on the first light guide functional layer 101 from the light incident surface, and is reflected from the first light guide functional layer 101 to the first microstructure layer 102, and then reflected from the first microstructure layer 102 to be emitted from the light emitting surface along the second direction y. Specifically, the first microstructure layer 102 includes a first surface facing away from the first light guide functional layer 101, and a plurality of groove structures 103 are formed on the first surface. The groove structure 103 includes a first bottom wall 104 tilted 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, that is, the opening of the first acute angle α faces a side away from the first light source 13. The light of the first light source 13 is incident on the first light guide functional layer 101 from the light incident surface, and is reflected to the first microstructure layer 102 by the first light guide functional layer 101. Since the first surface of the first microstructure layer 102 has the groove structure 103, the first surface and the groove structure 103 work together to achieve light modulation, so that the light can be emitted from the light emitting surface along the third direction s. The light incident on the reflective electrode 1211 along the third direction s is reflected by the reflective electrode 1211 and then emitted along the target direction f, thereby achieving modulation of the angle of the light emitted from the display device 1 to achieve anti-peeping.

[0063] Specifically, in the display device 1 provided in the present application, the anti-peeping function is achieved by adjusting the structure of the light guide layer 10 and the position of the first light source 13 in combination with the liquid crystal first display panel 12 having the reflective electrode 160 .

[0064] In the above implementation mode, if Figure 5 and Figure 7As shown, the groove structure 103 further includes a second bottom wall 105 arranged with the first bottom wall 104 along the second direction y, 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 may be arranged along a fourth direction z, and the fourth direction z is 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 may be a rectangle, including a long side L1 and a short side L2, the long side L1 is perpendicular to the second direction y, and the short side L2 is parallel to the second direction y, so as to enhance 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 a second acute angle β is formed between the second bottom wall 105 and the first surface, and the opening of the second acute angle β is 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 25.9μm; the length of the short side L2 can be 14.4μm; a third acute angle γ1 is formed between the third bottom wall 106 and the first surface, a fourth acute angle γ2 is formed between the fourth bottom wall 107 and the first surface, and the opening of the third acute angle γ1 and the opening of the fourth acute angle γ2 are arranged opposite to each other, both of which are 70°; the first acute angle α can be 32°, at which time a light emitting effect with a target direction range of 20° to 30° can be achieved. Among them, the target direction f is the angle of the acute angle formed between the outgoing light and the first direction x. The light emitting surface of the display device 1 is parallel to the light emitting surface of the backlight module 11.

[0065] In a feasible implementation manner, the first acute angle α is 15°-45°.

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

[0067] In a possible implementation, Figure 3 , Figure 5 and Figure 6 As shown, the orthographic projection of the light guide layer 10 on the first display panel 12 covers the first display panel 12, and the first bottom wall 104 includes a first end and a second end that are relatively arranged, one end of the first bottom wall 104 is connected to the first surface, and the second end is 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, and along the second direction y and along the direction from close to the first light source 13 to away from the first light source 13, the first distance h gradually increases.

[0068] Specifically, the first distance h may 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 greater the amount of light modulation is, the more light is received by the reflective electrode 1211, and the higher the brightness of the reflective display area A1 is. Therefore, the groove structure 103 can be set as follows: along the second direction y and along the direction from close to the first light source 13 to away from the first light source 13, the first distance h of the groove structure 103 gradually increases 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, thereby improving the light uniformity of the display device 1 to improve the user experience.

[0070] In a possible implementation, Figure 3 and Figure 8 As shown, the display device includes a sharing mode and an anti-peeping 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 anti-peeping 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 along the third direction s to the reflective electrode 1211. The reflective electrode 1211 is configured to reflect the modulated light toward the target direction f. 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. Figure 8 As shown, 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 displays based on the light emitted by the first light-emitting area 111. The light emitted by the first light-emitting area 111 includes light at various angles. At this time, the display device 1 can achieve good display effects at large viewing angles and positive viewing angles. Another working mode is the anti-peeping mode, such as Figure 3As shown, at this time, the backlight module 11 is configured to be turned off, that is, the first light-emitting area 111 does not emit light, and the transmissive display area A2 cannot display based on the first light-emitting area 111. The first light source 13 is configured to be turned on, and 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 emitted from the surface of the light guide layer 10 facing the first liquid crystal layer 122 along the third direction s to the reflective electrode 1211, so as to diverge the light incident from the side of the light guide layer 10 to the inside thereof, specifically, to diverge along the plane direction perpendicular to the thickness direction of the first display panel 12, and emit 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, wherein the target direction f is toward the user's observation position, and the user can observe the light emitted along the target direction f at the observation position, and the brightness of the light emitted along other directions (i.e., non-target directions f, such as the third direction s) is greatly reduced, so that the anti-peeping display of the non-target direction f can be realized, that is, the display screen is not easily observed from other positions. The sharing mode and the anti-peeping mode in the display device 1 provided in the present application can be switched, so as to have a wider range of application scenarios, which helps to meet the user's usage needs and improve the user experience.

[0072] The display device 1 provided in the present application can be applied in a vehicle, specifically in a co-driver display system (Co-driver display, CDD display system, i.e., a system for the co-driver), so as to meet the screen usage requirements of the user in the co-driver position while reducing the impact on the driver's attention in the main driver position during driving, thereby improving driving safety. Specifically, during the use of the display device 1, the arrangement direction of the main driver and the co-driver can be parallel to the second direction y in the display device 1, that is, the placement direction of the display device 1 can be: the target direction f is toward the co-driver position, and the main driver position can be located on the side of the first light source 13 away from the co-driver along the second direction y. Fig. 9 As shown, when the vehicle is in motion, the display device 1 can be placed in anti-peeping mode, in which case only the co-driver can view the display content, while the driver cannot see the display content or the display content is very dim, so that the display content is not likely to affect the driver's sight, thereby improving the safety of vehicle use. Fig.10 As shown, when the vehicle is stationary, the display device 1 is in the sharing mode, and the driver and the user in the co-pilot position can both view the display content, thereby realizing the sharing of the display content. The sharing mode and the anti-peeping mode can be switched by a button, or can be automatically switched according to the start-stop state of the vehicle, and this application does not specifically limit this.

[0073] In the above embodiment, in the anti-peep mode, the brightness at viewing angles other than 45° is no higher than 0.5% of the center brightness, and users within this viewing angle range cannot see clearly or cannot see the content of the displayed image due to insufficient brightness; in the sharing mode, the brightness value within the full viewing angle range follows the conventional viewing angle brightness distribution, that is, a clear image can be seen within the viewing angle range of 0° to ±89°.

[0074] In the above implementation mode, if Figure 8 As shown, the backlight module 11 may include a plurality of first light-emitting areas 111, and the plurality of first light-emitting areas 111 may be arranged at intervals. The first light-emitting areas 111 correspond one-to-one to the transmissive display areas A2, and the orthographic projection of the transmissive 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 transmissive display area A2 can be displayed, thereby improving the aperture ratio and resolution.

[0075] In a possible implementation, Figure 8 As shown, the backlight module 11 also includes a second light-emitting area 112 continuously arranged with the first light-emitting area 111, and the second light-emitting area 112 is connected with the first light-emitting area 111 to form a backlight module 11 that is arranged on the entire surface and emits light on the entire surface. The projection of the second light-emitting area 112 in the first direction x and the orthographic projection of the reflective display area A1 in the first direction x are at least partially overlapped. 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 orthographic projection of the light emitting position of the backlight module 11 on the first display panel 12 covers all the transmissive display areas A2, so that each position in each transmissive display area A2 can be displayed, thereby improving the aperture ratio and resolution.

[0076] In the above embodiment, the orthographic projection of the transmissive display area A2 in the first direction x is at least partially overlapped with the orthographic projection of the first light-emitting area 111 in the first direction x. Preferably, the orthographic projection of the transmissive display area A2 in the first direction x is located within the orthographic projection of the first light-emitting area 111 in the first direction x.

[0077] In a possible implementation, Figure 8 As shown, the display device 1 includes a first display area 14 and a second display area 15 that are alternately arranged. The first light-emitting area 111 of the backlight module 11 and the transmissive display area A2 of the first display panel 12 are located in the first display area 14 , and the reflective 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, that is, 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 of lower brightness. The second display area 15 is the main display area in the anti-peeping mode, that is, in the anti-peeping 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 can have a display effect with more uniform brightness in both modes.

[0079] In a possible implementation, Fig.11 and Fig.12 As shown, the display device 1 includes a plurality of sub-pixels 16, the plurality of sub-pixels 16 include a transmissive sub-pixel 162 and a reflective sub-pixel 161, the reflective sub-pixel 161 includes a reflective electrode 1211, the transmissive sub-pixel 162 includes a light-transmitting electrode 1212, 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 plurality of second repeating units 151, the second repeating unit 151 includes transmissive sub-pixels 162 of multiple 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, which includes reflective sub-pixels 161 with multiple light emitting colors, and the second repeating unit 151 includes at least one transmissive pixel, which includes transmissive sub-pixels 162 with multiple light emitting colors. The pixels in the first repeating unit 141 and the second repeating unit 151 are arranged in the same manner, thereby improving the uniformity of the display device 1 and simplifying the preparation method.

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

[0082] In a possible implementation, Figure 3 , Figure 8 and Fig.12As shown, the first display panel 12 further includes a first lower polarizer 124, a first array substrate 125, a first color filter 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 filter 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 filter substrate 126 away from the first liquid crystal layer 122. The influence of the external ambient light can be shielded by setting the first upper polarizer 127 and the first lower polarizer 124. In the anti-peeping mode, the light source of the reflective display area A1 can all come from the first light source 13.

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

[0084] In the above embodiment, the first color filter 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, and the first filter layer includes a first filter portion 1261 of multiple light-transmitting colors, and the first filter portion 1261 corresponds to the color of the sub-pixel 16. The first filter portion 1261 determines the final light-emitting color of the sub-pixel 16.

[0085] In a possible implementation, Figure 3 , Figure 8 and Fig.12 As shown, the first array substrate 125 includes a driving circuit, which includes a transistor 1251 and a capacitor 1252. The projections of the transistor 1251 and the capacitor 1252 in the first direction x do not overlap with the transmissive display area A2. The transparent electrode 1212 and the reflective 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-pixel 16 to work. The driving circuit includes a transistor 1251 and a capacitor 1252, and the transistor 1251 and the capacitor 1252 may include a metal film layer, so that the light transmittance of the position where the transistor 1251 and the capacitor 1252 are formed in the first array substrate 125 is low, so that the projection of the transistor 1251 and the capacitor 1252 in the first direction x does not overlap with the transmissive display area A2, so as to improve the light transmittance of the transmissive 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 to the driving circuit, so that the light-transmitting electrode 1212 and the reflective electrode 1211 are driven by the driving circuit to operate.

[0088] In a possible implementation, Fig.12 As shown, in the first electrode layer 121, the reflective electrode 1211 and the light-transmitting electrode 1212 are arranged in the same layer; or; Figure 8 As shown, the first electrode layer 121 includes an extension portion disposed in the same layer as the transparent electrode 1212 . The extension portion corresponds to the transparent electrode 1212 and is connected to each other. The reflective electrode 1212 is located on a side of the extension portion away from the backlight module 11 .

[0089] In the above implementation mode, if Figure 2 and Figure 3 As shown, 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 may be connected to the reflective electrode 1211 and then synchronously connected to the driving circuit. At this time, the light-transmitting electrode 1212 may be connected to the reflective electrode 1211 through an extension located on a side of the reflective electrode 1211 away from the first liquid crystal layer 122. Specifically, the transistor 1251 and the capacitor 1252 may be located in the first display area 14 and not in the second display area 15, and the light-transmitting electrode 1212 may be partially extended to the first display area 14 to be connected to the transistor 1251 or the capacitor 1252.

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

[0091] In a possible implementation, Fig.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 a 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 y 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 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 a direction from the second light guide function layer to the first display panel 12. A hemispherical concave structure is formed on the second microstructure layer. The combination of the diffusion layer, the prism layer and the light enhancement layer can achieve a uniform light mixing effect on the light, thereby improving the light output uniformity of the backlight module 11. The light guide plate 113 includes a light incident surface, the light incident surface of the light guide plate 113 is located on one side of the light guide plate 113 in the second direction y or on the side away from the first display panel 12, and the second light source 110 is located on the side of the light incident surface of the light guide plate 113 away from the light guide plate 113, forming an edge-entry 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 operations of the display device 1 in detail:

[0094] When the display device 1 is in the anti-peeping 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 the main display function. Since the transmissive display area A2 adopts the transparent electrode 1212, and the backlight module 11 does not emit light at this time, it is impossible to provide backlight for the transmissive display area A2. 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 display weakly or not display.

[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 the display state, and the transmissive display area A2 is displayed, serving as the area that plays a major display role in the display device 1 in the sharing mode; the reflective display area A1 has an extremely low transmittance to the light emitted by the backlight module 11, and the first light source 13 does not emit light at this time. Although some large-angle 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 does not display.

[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 set to be perpendicular to each other, and the liquid crystal in the first liquid crystal layer 122 can be a nematic liquid crystal. A spacer layer 128 is provided between the first array substrate 125 and the first electrode layer 121, and the thickness of the spacer layer 128 in the transmissive display area A2 is less than the thickness of the spacer layer 128 in the reflective display area A1, so that the box thickness of the transmissive display area A2 is greater than the box thickness of the reflective display area A1, so that the part of the first liquid crystal layer 122 in the reflective display area A1 acts as a 1 / 4 wave plate, and the part of the first liquid crystal layer 122 in the transmissive display area A2 acts as a 1 / 2 wave plate. Take 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 transmission display area A2 in sequence. The light emitted by the backlight module 11 can be horizontally polarized light after passing through the first lower polarizer 124. The function of the part of the first liquid crystal layer 122 located in the transmission display area A2 is equivalent to a 1 / 2 wave plate. The horizontally polarized light passes through the part of the first liquid crystal layer 122 located in the transmission display area A2 and rotates 90° to become vertically polarized light. Since the transmission axis directions of the first lower polarizer 124 and the first upper polarizer 127 are perpendicular, the light passing through the first liquid crystal layer 122 can be emitted from the first upper polarizer 127. In the anti-peeping mode, the light from the first light source 13 passes through the light guide layer 10 and then passes through the first upper polarizer 127 to become vertically polarized light. The part of the first liquid crystal layer 122 located in the reflective display area A1 acts as a quarter wave plate. The vertically polarized light passes through the part of the first liquid crystal layer 122 located in the reflective display area A1 and becomes circularly polarized light. After being reflected by the reflective electrode 1211, the rotation direction of the circularly polarized light changes, and then passes through the part of the first liquid crystal layer 122 located in the reflective display area A1 and is converted into linearly polarized light, which can be emitted by the first upper polarizer 127.

[0097] In a possible implementation, Fig.14 As shown, the backlight module 11 also 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 film substrate 1145, and a second upper polarizer 1146, which are stacked along 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, which 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, and a second upper polarizer 1146 stacked in a direction from the light guide plate 113 to the first display panel 12. The second array substrate 1142 includes a driving circuit and a common electrode. 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, so as to display.

[0099] 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, a second light source 110 and a second display panel 114. The following is a specific description of two operations of the display device 1:

[0100] When the display device 1 is in the anti-peeping 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 the main display function. Since the transmissive display area A2 uses the light-transmitting electrode 1212, and the backlight module 11 does not emit light at this time, the second display panel 114 cannot display, and thus cannot provide backlight for the transmissive display area A2. 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 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-displaying, non-closing state, the deflection angles of the liquid crystals in the first liquid crystal layer 122 are the same, and 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, and the area of ​​the second display panel 114 opposite to the transmissive display area A2 is transmitted through the transmissive display area A2, so as to display, as the area that plays the main display role in the display device 1 in the sharing mode, that is, the transmissive display area A2 displays through the display screen of the second display panel 114; the reflective display area A1 has a very low transmittance of the light emitted by the second display panel 114, and at this time the first light source 13 does not emit light, although some large-angle light enters the reflective display area A1, but the display brightness of the reflective display area A1 is very low or does not display.

[0102] In the above embodiment, the backlight module 11 and the first display panel 12 are bonded and fixed by the bonding layer 17 , and the material of the bonding layer 17 can be optical adhesive. The bonding 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 a first color filter substrate 126 located between the first liquid crystal layer 122 and the light guide layer 10, and the first color filter substrate 126 includes a first filter layer, and the first filter layer includes a first filter portion 1261 with multiple light-transmitting colors. The second color filter substrate 1145 includes a second filter layer, and the second filter layer includes a second filter portion 1147 with multiple light-transmitting colors. The second filter portion 1147 corresponds to the color of the sub-pixel 16, and the projections of the first filter portion 1261 and the second filter portion 1147 with the same light-transmitting color on the backlight module 11 at least partially overlap, that is, the first filter portion 1261 and the second filter portion 1147 in each sub-pixel 16 have the same color.

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

[0105] Specifically, each sub-pixel 16 includes a first filter portion 1261 and a second filter portion 1147 that are 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 portion 1261 located on the side of the second filter portion 1147 away from the backlight module 11 has the same color as the second filter portion 1147.

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

[0107] The reflective display area A1 of the first display panel 12 performs display based on the first light source 13 , so the transmittance of the first filter 1261 needs to be set to be relatively low to meet the light transmission requirement of the first light source 13 , so as to improve the light output 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 image displayed by the second display panel 114, and the transmittance of the second filter 1147 in the second display panel 114 can be set to be higher than the transmittance of the first filter 1261, thereby improving the color gamut of the displayed image.

[0109] In another possible implementation, if Fig.15As shown, the backlight module 11 includes an organic light emitting diode first display panel 115, and 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 that are stacked.

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

[0111] The organic light emitting diode first display panel 115 may further include a third filter layer located at the light emitting unit 1152 away from the third array substrate 1151 to further improve the purity of the emitted light.

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

[0113] When the display device 1 is in the anti-peeping mode: the first light source 13 is configured to be turned on, the organic light emitting diode display panel 115 is not working, the first display panel 12 is in the display state, the reflective display area A1 displays, and plays the main display function. Since the transmissive display area A2 adopts the transparent electrode 1212, and the organic light emitting diode display panel 115 does not emit light at this time, it is impossible to provide backlight for the transmissive display area A2. 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 display weakly or not display.

[0114] When the display device 1 is in the sharing mode: the first light source 13 is configured to be turned off, the organic light emitting diode display panel 115 is configured to work, the first display panel 12 is in a non-displaying, non-turning off state, the deflection angles of the liquid crystals in the first liquid crystal layer 122 are 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, and the area of ​​the organic light emitting diode display panel 115 opposite to the transmissive display area A2 is transmitted through the transmissive display area A2, so as to display, that is, the transmissive display area A2 displays by transmitting the display screen of the organic light emitting diode display panel 115, as the area that plays the main display role in the display device 1 in the sharing mode; the reflective display area A1 has a very low transmittance of 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 will enter the reflective display area A1, the display brightness of the reflective display area A1 is very low or does not display.

[0115] The above are only preferred specific implementations of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A display device, characterized in that: include: A backlight module, comprising at least one first light emitting area; a first display panel, arranged at a light emitting surface side 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 sequentially stacked in a direction away from the backlight module, the first electrode layer comprising a reflective electrode located in the reflective display area and a transmissive electrode located in the transmissive display area, an orthographic projection of the transmissive display area in the first direction at least partially overlapping with an orthographic projection of the first light emitting area in the first direction; A light guide layer, located on a side of the first display panel away from the backlight module; A first light source is located at one side of the light guide layer along a second direction, wherein the second direction is perpendicular to the first direction; Among them, the light guiding layer includes a first light guiding functional layer and a first microstructure layer located on the side of the first light guiding functional layer away from the backlight module, the first microstructure layer includes a first surface away from the side of the first light guiding functional layer, the first surface is formed with a plurality of groove structures, the groove structure includes 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.

2. The display device according to claim 1, characterized in that The display device includes a sharing mode and an anti-peeping mode. 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 performs display based on the first light emitting area; In the anti-peep mode, the first light source is configured to be turned on and inject light into the light guide layer, the light guide layer is configured to modulate the light and make the modulated light emitted from the surface of the light guide layer facing the first liquid crystal layer along a third direction to the reflective electrode, and 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 a reflection point of the reflective electrode.

3. The display device according to claim 1 or 2, characterized in that: The degree of the first acute angle ranges from 15° to 45°.

4. The display device according to claim 3, characterized in that: The orthographic projection of the light guide layer on the first display panel covers the first display panel, and the first bottom wall includes a first end and a second end arranged opposite to each other, one end is connected to the first surface, and the second end is away from the first surface; along the first direction, the distance between the second end and the first surface is a first distance, and along the second direction and from the direction close to the first light source to the direction away from the first light source, the first distance gradually increases.

5. The display device according to claim 1, characterized in that: The first display panel further includes: A first lower polarizer, located on a side of the first display panel close to the backlight module; A first array substrate, located between the first lower polarizer and the first electrode layer; A first color filter substrate, located on a side of the first liquid crystal layer away from the first electrode layer; A first upper polarizer, located on a side of the first color filter substrate away from the first liquid crystal layer; Wherein, the first upper polarizer is located between the light guide layer and the first color filter substrate, or the first upper polarizer is located on a side of the light guide layer away from the first color filter substrate.

6. The display device according to claim 5, characterized in that: The first array substrate includes a driving circuit, the driving circuit includes a transistor and a capacitor, the projections of the transistor and the capacitor in the first direction do not overlap with the projection of the transmissive display area in the first direction, and the transparent electrode and the reflective electrode are connected to the driving circuit.

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

8. The display panel according to claim 1, characterized in that: The backlight module includes 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, characterized in that: The backlight module also includes a second display panel, which is located between the light guide plate and the first display panel. The second display panel includes 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 stacked in a direction from the light guide plate to the first display panel.

10. The display device according to claim 9, characterized in that: The first display panel includes a first color filter substrate located between the first liquid crystal layer and the light guide layer, the first color filter substrate includes a first filter layer, and the first filter layer includes first filter parts of multiple light-transmitting colors; The second color filter substrate includes a second filter layer, and the second filter layer includes second filter parts of multiple colors; The projections of the first filter part and the second filter part having the same light transmission color on the backlight module at least partially overlap.

11. The display device according to claim 10, characterized in that: The transmittance of the first filter portion is greater than the transmittance of the second filter portion.

12. The display device according to claim 1, characterized in that: The backlight module further includes 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 an orthographic projection of the reflective display area in the first direction.

13. The display device according to claim 1, characterized in that The backlight module includes an organic light emitting diode display panel, which includes 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 includes a first electrode, a light emitting layer, and a second electrode stacked together.

14. The display device according to claim 1, characterized in that 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 of ​​the first display panel is located in the second display area; The display device comprises a plurality of sub-pixels, each of which is partially located in the first display area and partially 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 include transmissive sub-pixels and reflective sub-pixels, the reflective sub-pixels include the reflective electrode, the transmissive sub-pixels include the light-transmitting electrode, the first display area includes a first repeating unit, the first repeating unit includes the reflective sub-pixels of a plurality of light-emitting colors, the second display area includes a plurality of second repeating units, the second repeating unit includes the transmissive sub-pixels of a plurality of light-emitting colors.

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