A display device and a mobile terminal

Abstract

The present application discloses a display device and a mobile terminal; the display device comprises a first display layer, a second display layer arranged on the first display layer, and a light emission adjustment layer arranged on the second display layer, wherein when the display device is in a first display mode, the first display layer and the second display layer are displayed in time-sharing manner, and the light emission adjustment layer respectively adjusts the light emission angles of the first display layer and the second display layer; the present application adopts the first display layer and the second display layer to display in time-sharing manner, and the light emission adjustment layer respectively adjusts the light emission angles of the first display layer and the second display layer, so that the display image of the first display layer and the display image of the second display layer are alternately provided to the left eye and the right eye of the viewing eye, and the resolution of the image viewed by the viewer is not halved, so the display device of the present application can meet the use requirements of high resolution.

Description

Technical Field

[0001] This application relates to the field of display technologies, and in particular, to a display device and a mobile terminal. Background Art

[0002] With the development of display technologies, the application of stereoscopic display devices has become increasingly widespread, such as in fields like online shopping and live broadcasts. In particular, naked-eye 3D display has become a future development trend.

[0003] Existing display devices provide two images to the left and right eyes of a viewer respectively, and the viewer combines the two parallax images in the brain to perceive a three-dimensional image. Since half of the pixels of the display device are used to provide the left-eye image and the other half are used to provide the right-eye image, the resolution of existing naked-eye 3D displays can only reach half of the resolution of the display panel, making it difficult to adapt to high-resolution scenarios. How to provide a high-resolution naked-eye 3D display device is one of the technical problems that those skilled in the art urgently need to solve. Summary of the Invention

[0004] This application provides a display device and a mobile terminal to solve the technical problem that existing naked-eye 3D display devices are difficult to meet high-resolution requirements.

[0005] To solve the above problem, the technical solutions provided in this application are as follows:

[0006] This application provides a display device, which includes:

[0007] A first display layer;

[0008] A second display layer disposed on the first display layer; and

[0009] A light output adjustment layer disposed on the second display layer;

[0010] Wherein, when the display device is in the first display mode, the first display layer and the second display layer display alternately, and the light output adjustment layer adjusts the light output angles of the first display layer and the second display layer respectively.

[0011] In the display device of this application, the light output adjustment layer includes a first electrode and a second electrode that are opposite and spaced apart, and a liquid crystal layer disposed between the first electrode and the second electrode;

[0012] In the first display mode, the first electrode and the second electrode generate an electric field to control the deflection of the liquid crystal cells of the liquid crystal layer, and the liquid crystal cells adjust the light output angle of the first display layer or the second display layer; in the second display mode, the first electrode and the second electrode do not generate an electric field, and the light output angle of the first display layer and / or the second display layer remains unchanged.

[0013] In the display device of the present application, when the first display layer is in the display state and the second display layer is in the transparent state, the first electrode and the second electrode generate a first electric field, and the light output adjustment layer adjusts the light output angle of the first display layer to a first region;

[0014] When the first display layer is in the transparent state and the second display layer is in the display state, the first electrode and the second electrode generate a second electric field, and the light output adjustment layer adjusts the light output angle of the second display layer to a second region.

[0015] In the display device of the present application, the first region and the second region do not overlap.

[0016] In the display device of the present application, the first display layer and the second display layer alternately display, and the frequency of the alternate display is 60 Hz.

[0017] In the display device of the present application, when the display device is in the second display mode, the light output adjustment layer is in a non-working state, and at least one of the first display layer and the second display layer is in the display state.

[0018] In the display device of the present application, the display device further includes a backlight disposed on a side of the first display layer away from the second display layer, and the first display layer includes:

[0019] Substrates, including a first substrate and a second substrate that are opposite and spaced apart, an array layer is disposed on a side of the first substrate away from the backlight, and a color filter layer is disposed on a side of the second substrate close to the backlight;

[0020] A first liquid crystal layer is disposed between the first substrate and the second substrate.

[0021] In the display device of the present application, the pixels of the first display layer and the pixels of the second display layer correspond one by one.

[0022] In the display device of the present application, a lower polarizer is disposed on a side of the first display layer away from the light output adjustment layer, and an upper polarizer is disposed on a side of the second display layer close to the light output adjustment layer.

[0023] The present application further provides a mobile terminal, and the mobile terminal includes the above-mentioned display device.

[0024] Beneficial effects: The present application discloses a display device and a mobile terminal; the display device includes a first display layer, a second display layer disposed on the first display layer, and a light output adjustment layer disposed on the second display layer. When the display device is in the first display mode, the first display layer and the second display layer display alternately, and the light output adjustment layer adjusts the light output angles of the first display layer and the second display layer respectively. By adopting the alternate display of the first display layer and the second display layer and the light output adjustment layer adjusting the light output angles of the first display layer and the second display layer respectively, the display images of the first display layer and the second display layer are alternately provided to the left eye and the right eye of the viewing eye, and the resolution of the image viewed by the viewer is not halved. Therefore, the display device of the present application can meet the usage requirements of high resolution. Description of the Drawings

[0025] The following will make the technical solutions and other beneficial effects of the present application obvious by describing the specific embodiments of the present application in detail in conjunction with the drawings.

[0026] Figure 1 It is a schematic structural diagram of the display device of the present application;

[0027] Figure 2 It is a schematic diagram of the first form of the light output adjustment layer of the present application;

[0028] Figure 3 It is a schematic diagram of the second form of the light output adjustment layer of the present application;

[0029] Figure 4 It is a schematic structural diagram of the first display layer of the present application;

[0030] Figure 5 It is a schematic structural diagram of a display device of the present application;

[0031] Figure 6 It is a schematic diagram of the display device of the present application when used for the first area display;

[0032] Figure 7 It is a schematic diagram of the display device of the present application when used for the second area display.

[0033] Description of the reference numerals:

[0034] The first display layer 11, the second display layer 12, the light output adjustment layer 13, the first electrode 21, the second electrode 22, the liquid crystal layer 23, the first electric field E1, the first region L, the second electric field E2, the second region R, the backlight 120, the first substrate 112, the second substrate 116, the array layer 113, the color filter layer 115, the first liquid crystal layer 114, the light ray S, the first pixel PX11 of the first display layer, the second pixel PX12 of the first display layer, the first pixel PX21 of the second display layer, and the second pixel PX22 of the second display layer. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present application will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present application, and are not used to limit the present application. In the present application, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device.

[0036] Existing display devices provide two images to the left and right eyes of the viewer respectively, and the viewer combines the two parallax images in the brain to perceive a three-dimensional image. Since half of the pixels of the display device are used to provide the left-eye image and the other half are used to provide the right-eye image, the resolution of existing autostereoscopic 3D displays can only reach half of the resolution of the display panel, making it difficult to adapt to high-resolution scenarios. How to provide a high-resolution autostereoscopic 3D display device is one of the technical problems that those skilled in the art urgently need to solve. The present application proposes the following solutions based on the above technical problems.

[0037] The present application discloses a display device and a mobile terminal; the display device includes a first display layer 11, a second display layer 12 disposed on the first display layer 11, and a light output adjustment layer 13 disposed on the second display layer 12. When the display device is in the first display mode, the first display layer 11 and the second display layer 12 display alternately, and the light output adjustment layer 13 adjusts the light output angles of the first display layer 11 and the second display layer 12 respectively.

[0038] In this application, by using the first display layer 11 and the second display layer 12 to display in a time-sharing manner, and the light output adjustment layer 13 adjusts the light output angles of the first display layer 11 and the second display layer 12 respectively, so that the display images of the first display layer 11 and the second display layer 12 are alternately provided to the left eye and the right eye of the viewing eye, and the resolution of the image viewed by the viewer is not halved. Therefore, the display device of this application can meet the usage requirements of high resolution.

[0039] Please refer to Figures 1 to 7 , in which, Figure 1 is a schematic structural diagram of the display device of this application, Figure 2 is a schematic diagram of the first form of the light output adjustment layer 13 of this application. In the first form, a voltage is applied to the first electrode 21 and the second electrode 22 of the light output adjustment layer 13, and the light output adjustment layer 13 changes the light output angle of the light ray S; Figure 3 is a schematic diagram of the second form of the light output adjustment layer 13 of this application. In the second form, no voltage is applied to the first electrode 21 and the second electrode 22 of the light output adjustment layer 13, and the light output adjustment layer 13 does not change the light output angle of the light ray S; Figure 4 is a schematic structural diagram of the first display layer 11 of this application, where the first pixel PX11 of the first display layer and the second pixel PX12 of the first display layer refer to the smallest light-emitting unit of the first display layer 11; Figure 5 is a schematic structural diagram of a display device of this application, Figure 5 The display device includes Figure 4 The first display layer 11 of, where the second display layer 12 can use the same display panel as the first display layer 11, or can use other types of display panels; Figure 6 is a schematic diagram of the display device of this application when used for displaying in the first area L. At this time, the first display layer 11 is in the display state, the second display layer 12 is in the transparent state, and the light output adjustment layer 13 adjusts the light output angle of the first display layer 11 to the first area L; Figure 7 is a schematic diagram of the display device of this application when used for displaying in the second area R. At this time, the first display layer 11 is in the transparent state, the second display layer 12 is in the display state, and the light output adjustment layer 13 adjusts the light output angle of the second display layer 12 to the second area R.

[0040] In this embodiment, the first display layer 11 can be an LCD display panel, an OLED display panel, a Mini-LED panel, a Micro-LED panel, etc. In some embodiments, the second display layer 12 can use the same display panel as the first display layer 11. The first display layer 11 and the second display layer 12 can also use different display panels, and this application does not limit this. The first display layer 11 and the second display layer 12 can be transparent display panels, so as to improve the penetration rate of the light ray S and the display brightness of the display device.

[0041] In this embodiment, the states of the first display layer 11 and the second display layer 12 each include two types: a display state and a transparent state. The first display layer 11 being in the display state means that the first display layer 11 displays an image, and the first display layer 11 being in the transparent state means that the first display layer 11 does not display an image. At this time, the light ray S can penetrate the first display layer 11. For the definitions of the display state and the transparent state of the second display layer 12, please refer to the first display layer 11.

[0042] In this embodiment, please refer to Figure 1 , the display device of the present application includes a first display layer 11, a second display layer 12, and a light output adjustment layer 13 that are stacked. Among them, the second display layer 12 is disposed on the light output side of the first display layer 11, and the light output surface of the second display layer 12 is located on the side away from the first display layer 11. The light output adjustment layer 13 is disposed on the light output side of the second display layer 12.

[0043] It should be noted that when the light output adjustment layer 13 is in the working state, it adjusts the light output angle of the light ray S; when the light output adjustment layer 13 is in the non - working state, it does not adjust the light output angle of the light ray S. That is to say, when the light output adjustment layer 13 is in the non - working state, the light ray S passing through the light output adjustment layer 13 is emitted at the original light output angle.

[0044] In this embodiment, in the first display mode, the light output adjustment layer 13 is in the working state. At this time, the first display layer 11 and the second display layer 12 display alternately. That is to say, in the first display mode, at the same moment, only one of the first display layer 11 and the second display layer 12 displays. When the first display layer 11 displays, the second display layer 12 is in the transparent state, and the light ray S emitted from the first display layer 11 can pass through the second display layer 12 and the light output adjustment layer 13 adjusts the angle of the light ray S. When the second display layer 12 displays, the first display layer 11 is in the transparent state, and the light ray S of the second display layer 12 is adjusted by the light output adjustment layer 13 for the light output angle.

[0045] Now, the technical solution of the present application will be described in combination with specific embodiments.

[0046] In the display device of the present application, the light output adjustment layer 13 includes a first electrode 21 and a second electrode 22 that are opposite and spaced apart, and a liquid crystal layer 23 disposed between the first electrode 21 and the second electrode 22; in the first display mode, the first electrode 21 and the second electrode 22 generate an electric field to control the deflection of the liquid crystal cells of the liquid crystal layer 23, and the liquid crystal cells adjust the light output angle of the first display layer 11 or the second display layer 12; in the second display mode, the first electrode 21 and the second electrode 22 do not generate an electric field, and the light output angles of the first display layer 11 and / or the second display layer 12 remain unchanged.

[0047] In this embodiment, the light output adjustment layer 13 can be a liquid crystal lens. Please refer to Figure 2 and Figure 3 , the light output adjustment layer 13 includes a first electrode 21 and a second electrode 22 which are relatively spaced apart. Among them, the first electrode 21 can be a multi-electrode. For example, the first electrode 21 can include a plurality of strip electrodes distributed in an array, and each strip electrode can be individually applied with a voltage; the second electrode 22 can be a common electrode, and the common electrode provides a common voltage. Among them, the positions of the first electrode 21 and the second electrode 22 can be exchanged, as long as it is ensured that an electric field can be generated between the first electrode 21 and the second electrode 22.

[0048] In this embodiment, the liquid crystal layer 23 is disposed between the first electrode 21 and the second electrode 22. By applying voltages to the first electrode 21 and the second electrode 22, an electric field is formed, and the liquid crystal units in the liquid crystal layer 23 are deflected under the action of the electric field. When the voltages applied between the first electrode 21 and the second electrode 22 are different, different electric fields are formed, and the deflection angles of the liquid crystal units are also different. When the deflection angles of the liquid crystal units are different, the adjustment directions of the light output angles of the liquid crystal units for the light S will be different accordingly. By setting the magnitudes of the voltages applied between the first electrode 21 and the second electrode 22, the light output adjustment layer 13 can adjust the light S to a preset angle.

[0049] In this embodiment, the light output adjustment layer 13 further includes an alignment layer (not shown in the figure) disposed on the sides of the first electrode 21 and the second electrode 22 close to the liquid crystal layer 23, and the alignment layer is used to provide a pretilt angle for the liquid crystal layer 23. The light output adjustment layer 13 further includes a sealant (not shown in the figure), and the sealant is used to seal the liquid crystal layer 23. The light output adjustment layer 13 can further include support columns (not shown in the figure) disposed in the liquid crystal layer 23, and the support columns are used to maintain the cell thickness of the liquid crystal layer 13.

[0050] In this embodiment, please refer to Figure 2 , in the first display mode, the light output adjustment layer 13 is in a working state, voltages are applied to the first electrode 21 and the second electrode 22, and then an electric field is generated, and the light output adjustment layer 13 adjusts the light output angle of the first display layer 11 or the second display layer 12. Please refer to Figure 3 , in the second display mode, no voltages are applied to the first electrode 21 and the second electrode 22, no electric field is generated between the first electrode 21 and the second electrode 22, the light output adjustment layer 13 does not adjust the light output angles of the first display layer 11 and / or the second display layer 12, and the light S passing through the light output adjustment layer 13 is emitted at the original angle.

[0051] In the display device of the present application, when the first display layer 11 is in the display state and the second display layer 12 is in the transparent state, a first electric field E1 is generated between the first electrode 21 and the second electrode 22, and the light output adjustment layer 13 adjusts the light output angle of the first display layer 11 to the first region L; when the first display layer 11 is in the transparent state and the second display layer 12 is in the display state, a second electric field E2 is generated between the first electrode 21 and the second electrode 22, and the light output adjustment layer 13 adjusts the light output angle of the second display layer 12 to the second region R.

[0052] In this embodiment, in the first display mode, the display device can achieve three-dimensional display. At this time, please refer to Figure 2 , the light output adjustment layer 13 is in the working state. At the first moment, please refer to Figure 6 , the first display layer 11 is in the display state, the second display layer 12 is in the transparent state, a first electric field E1 is generated between the first electrode 21 and the second electrode 22 of the light output adjustment layer 13, the liquid crystal cells in the liquid crystal layer 23 are deflected, and the light output angle of the light S in the first display layer 11 is adjusted to the first region L. At the second moment, please refer to Figure 7 , the first display layer 11 is in the transparent state, the second display layer 12 is in the display state, a second electric field E2 is generated between the first electrode 21 and the second electrode 22 of the light output adjustment layer 13, the liquid crystal cells in the liquid crystal layer 23 are deflected, and the light output angle of the light S in the second display layer 12 is adjusted to the second region R.

[0053] In this embodiment, the first moment and the second moment alternate. The first region L and the second region R are respectively used for left-eye viewing and right-eye viewing. Among them, the images in the first region L and the second region R are images with parallax. By setting the alternating frequency of the first moment and the second moment, the observer can combine the image displayed in the first region L with the image displayed in the second region R in the brain to perceive a three-dimensional image.

[0054] In Figure 6 and Figure 7 , the deflection states of the liquid crystal cells in the liquid crystal layer 23 are schematic diagrams. For the deflection states of the liquid crystal cells, please refer to Figure 2 . The deflection states of the liquid crystal cells can be adjusted according to the light output angle, and the present application does not limit this.

[0055] It should be noted that the deflection angles of the liquid crystal cells in the light output adjustment layer 13 at the first moment are different from those at the second moment. Therefore, the display pictures of the first display layer 11 and the second display layer 12 can be adjusted to different regions respectively.

[0056] In the display device of the present application, the first region L and the second region R do not overlap.

[0057] In this embodiment, please refer to Figure 6 and Figure 7 , the first region L and the second region R do not overlap, thereby reducing crosstalk between the image viewed by the left eye and the image viewed by the right eye.

[0058] In the display device of the present application, the first display layer 11 and the second display layer 12 are alternately displayed, and the frequency of the alternate display is 60 Hz.

[0059] In this embodiment, please refer to the introduction in the above embodiment. The first display layer 11 and the second display layer 12 are alternately displayed, that is, the first moment and the second moment are alternated, and the frequency of the alternation can be 60 Hz. In some embodiments, the frequency of the alternation can also be 120 Hz. By increasing the frequency of the alternation, the smoothness of the display screen can be improved.

[0060] In the display device of the present application, when the display device is in the second display mode, the light output adjustment layer 13 is in a non-operating state, and at least one of the first display layer 11 and the second display layer 12 is in a display state.

[0061] In this embodiment, when the display device is in the second display mode, the display device can achieve two-dimensional display. At this time, please refer to Figure 3 , the light output adjustment layer 13 is in a non-operating state. Any one of the first display layer 11 and the second display layer 12 is in a display state. By setting any one of the first display layer 11 and the second display layer 12 to the display state, the first display layer 11 and the second display layer 12 can be alternately used, thereby improving the overall lifespan of the display device. In some embodiments, the first display layer 11 and the second display layer 12 can be displayed simultaneously. At this time, the first display layer 11 and the second display layer 12 display the same picture. By setting the first display layer 11 and the second display layer 12 to be displayed simultaneously, the display brightness of the display device can be improved.

[0062] In the display device of the present application, please refer to Figure 4 and Figure 5 , the display device further includes a backlight 120 disposed on a side of the first display layer 11 away from the second display layer 12. The first display layer 11 includes a substrate, and the substrate includes a first substrate 112 and a second substrate 116 that are opposite and spaced apart. An array layer 113 is disposed on a side of the first substrate 112 away from the backlight 120, and a color film layer 115 is disposed on a side of the second substrate 116 close to the backlight 120; the first display layer 11 further includes a first liquid crystal layer 114 disposed between the first substrate 112 and the second substrate 116.

[0063] In this embodiment, please refer toFigure 4 and Figure 5 When the first display layer 11 and the second display layer 12 adopt LCD display panels, the display device further includes a backlight 120, and the backlight 120 is disposed on a side of the first display layer 11 away from the second display layer 12. The backlight 120 is configured to provide a planar light source for the first display layer 11 and the second display layer 12.

[0064] In this embodiment, the materials of the first substrate 112 and the second substrate 116 include a rigid substrate and a flexible substrate. The rigid substrate may be glass or the like, and the flexible substrate may be polyimide or the like.

[0065] In this embodiment, please refer to Figure 4 When the first display layer 11 adopts an LCD display panel, the first display layer 11 includes a first substrate 112 and a second substrate 116 disposed opposite to each other, and a first liquid crystal layer 114 is located between the first substrate 112 and the second substrate 116. Among them, the second substrate 116 is located on a side of the first substrate 112 away from the backlight 120. An array layer 113 is disposed on a side of the first substrate 112 close to the first liquid crystal layer 114, and a color filter layer 115 is disposed on a side of the second substrate 116 close to the first liquid crystal layer 114. The array layer 113 is provided with a driving circuit, and the driving circuit is configured to drive the first liquid crystal layer 114 to deflect. The color filter layer 115 is provided with a plurality of color filter units distributed in an array, such as a red filter unit, a green filter unit, and a blue filter unit. The color filter layer 115 is configured to convert white light into colored light. For example, the white light passing through the red filter unit is converted into red light, and the other color filter units are similar.

[0066] In some embodiments, the color filter layer 115 may further include white filter units. By providing some white filter units in the color filter layer 115, the transmittance of the first display layer 11 can be improved, and further the display brightness of the display device can be improved.

[0067] In this embodiment, the first display layer 11 may further include a polarizing plate (not shown in the figure) disposed on a side of the first substrate 112 and the second substrate 116 away from the first liquid crystal layer 114.

[0068] In the display device of the present application, the pixels of the first display layer 11 and the pixels of the second display layer 12 correspond one by one.

[0069] In this embodiment, please refer to Figure 6 and Figure 7 The first pixel PX11 of the first display layer corresponds to the first pixel PX21 of the second display layer, and the second pixel PX12 of the first display layer corresponds to the second pixel PX22 of the second display layer one by one. Through the above settings, the display screen of the first display layer 11 located below can be prevented from being blocked by the second display layer 12.

[0070] It should be noted that when the first display layer 11 and the second display layer 12 adopt OLED panels, the pixels of the second display layer 12 are transmissive pixels. That is to say, the light-emitting units of the second display layer 12 allow light S to pass through. For example, the anode of the second display layer 12 can be made of a semi-reflective and semi-transmissive metal, so that the light S of the first display layer 11 can pass through the second display layer 12.

[0071] In the display device of the present application, a lower polarizer is provided on the side of the first display layer 11 away from the light output adjustment layer 13, and an upper polarizer is provided on the side of the second display layer 12 close to the light output adjustment layer 13.

[0072] In this embodiment, both the first display layer 11 and the second display layer 12 can adopt LCD display panels. At this time, a lower polarizer can be provided on the lower surface of the first display layer 11, and an upper polarizer can be provided on the upper surface of the second display layer 12, thereby omitting the two polarizers on the upper surface of the first display layer 11 and the lower surface of the second display layer 12. By omitting the two polarizers, the transmittance of the first display layer 11 and the second display layer 12 can be improved, thereby enhancing the display brightness of the display device.

[0073] In this embodiment, the polarization directions of the upper polarizer and the lower polarizer can be at a 90-degree angle. Through the above setting, the polarizer can adjust the brightness of the light S.

[0074] In some embodiments, when the first display layer 11 and the second display layer 12 are OLED display panels, a circular polarizer can also be provided only on the upper surface of the second display layer 12, thereby reducing the glare problem caused by the reflection of ambient reflected light into the human eye.

[0075] The present application also provides a mobile terminal, and the mobile terminal includes the above display device.

[0076] In this embodiment, the mobile terminal can be: a mobile phone, a tablet computer, a television, a monitor, a notebook computer, a digital photo frame, a navigator, or any other product or component with a display function.

[0077] In the above embodiments, the descriptions of the various embodiments have their own focuses. For the parts not detailed in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0078] The above has introduced in detail a display device and a mobile terminal provided by the embodiments of the present application. Specific examples are used herein to elaborate on the principle and implementation manner of the present application. The description of the above embodiments is only for helping to understand the technical solution and its core idea of the present application; those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A display device, characterized in that, Comprising: A first display layer; A second display layer, disposed on the first display layer; And A light output adjustment layer, disposed on the second display layer; Wherein, when the display device is in a first display mode, the first display layer and the second display layer are displayed in a time-sharing manner, the light output adjustment layer respectively adjusts the light output angles of the first display layer and the second display layer, and the light output adjustment layer includes a first electrode and a second electrode that are opposite and spaced apart, and a liquid crystal layer disposed between the first electrode and the second electrode; In the first display mode, the first electrode and the second electrode generate an electric field to control the deflection of the liquid crystal cells of the liquid crystal layer, and the liquid crystal cells adjust the light output angle of the first display layer or the second display layer.

2. The display device according to claim 1, characterized in that, In a second display mode, the first electrode and the second electrode do not generate an electric field, and the light output angles of the first display layer and / or the second display layer remain unchanged.

3. The display device according to claim 2, characterized in that, When the first display layer is in a display state and the second display layer is in a transparent state, the first electrode and the second electrode generate a first electric field, and the light output adjustment layer adjusts the light output angle of the first display layer to a first region; When the first display layer is in a transparent state and the second display layer is in a display state, the first electrode and the second electrode generate a second electric field, and the light output adjustment layer adjusts the light output angle of the second display layer to a second region.

4. The display device according to claim 3, characterized in that, The first region and the second region do not overlap.

5. The display device according to claim 3, characterized in that, The first display layer and the second display layer are alternately displayed, and the frequency of the alternate display is 60 Hz.

6. The display device according to claim 2, characterized in that, When the display device is in the second display mode, the light output adjustment layer is in a non-working state, and at least one of the first display layer and the second display layer is in a display state.

7. The display device according to claim 1, characterized in that, The display device further includes a backlight disposed on a side of the first display layer away from the second display layer, and the first display layer includes: A substrate, including a first substrate and a second substrate that are opposite and spaced apart, an array layer is disposed on a side of the first substrate away from the backlight, and a color film layer is disposed on a side of the second substrate close to the backlight; A first liquid crystal layer, disposed between the first substrate and the second substrate.

8. The display device according to claim 1, characterized in that, The pixels of the first display layer and the pixels of the second display layer correspond one by one.

9. The display device according to claim 1, characterized in that, A lower polarizer is disposed on a side of the first display layer away from the light output adjustment layer, and an upper polarizer is disposed on a side of the second display layer close to the light output adjustment layer.

10. A mobile terminal, characterized in that, Including the display device according to any one of claims 1 to 9.

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