Display device capable of switching display modes and switching method

Abstract

The embodiment of the invention provides a display device capable of switching display modes and a switching method. The display device capable of switching the display modes comprises a first display panel, a display switching structure and a second display panel. The display switching structure is arranged on one side of the first display panel; the second display panel is arranged on the side, away from the first display panel, of the display switching structure; wherein the first display panel and the second display panel are display panels adopting different display technologies; when the first display panel performs normal display, the second display panel does not perform display, and the display switching structure can allow light of the first display panel to be emitted; when the second display panel normally displays, the first display panel does not display, and the display switching structure is used for reflecting the light of the second display panel. According to the display device capable of switching the display modes and the switching method provided by the embodiment of the invention, the display switching of the first display panel and the second display panel with different display technologies is realized through the display switching structure.

Description

Technical Field

[0001] This application belongs to the field of display technology, and particularly relates to an electronic paper and liquid crystal switching display device and method. Background Art

[0002] Liquid crystal display technology has pervaded our daily life and work due to its characteristics such as being light, thin, radiation-free, and portable. The electronic paper display technology aims to create an electronic display device that is as thin and light as ordinary paper, bendable, and relies on external light sources for passive display. Because this technology often has the characteristic of bistability and does not require additional power supply when the image is retained, it can save a large amount of energy.

[0003] The display panel made of liquid crystal display technology has high resolution, strong contrast, wide color gamut, and good stability, and is the preferred choice for current electronic product screens. However, due to its active display principle, liquid crystal display has high power consumption, and even screen flickering and harmful blue light may occur; as a typical passive display technology, electronic paper display technology can effectively protect the eyes from the harm of the light source under the screen, can obtain a reading effect similar to that of ordinary paper, and only requires power supply during refresh display, which is energy-saving and environmentally friendly. However, the electronic paper display has poor resolution and slow response speed, and is only suitable for displaying products with low requirements for refresh rate, such as e-books, etc. Moreover, most current electronic paper display products can only display two states of black and white. Even for products that have achieved color display, the color gamut is also low, and there are limitations.

[0004] Therefore, it is necessary to study a display device and method that can achieve switching between different display technologies to address the deficiencies of the prior art and solve the above problems. Summary of the Invention

[0005] In view of this, the embodiments of this application provide a display device with a switchable display mode and a switching method to solve the technical problem that the existing display devices only have a single display technology and cannot meet the current requirements.

[0006] In a first aspect, the embodiments of this application provide a display device with a switchable display mode, including: A first display panel; A display switching structure disposed on one side of the first display panel; A second display panel disposed on the side of the display switching structure away from the first display panel; wherein, the first display panel and the second display panel are display panels using different display technologies; When the first display panel is displaying normally, the second display panel does not display, and the display switching structure allows the light of the first display panel to exit; When the second display panel is displaying normally, the first display panel does not display, and the display switching structure is used to reflect the light of the second display panel.

[0007] In some embodiments, a dimming layer is further provided on a side of the second display panel away from the display switching structure; When the dimming layer is in an energized state, the dimming layer is transparent and allows light to pass through collinearly; When the dimming layer is in a de-energized state, the dimming layer is opaque and the dimming layer is used to scatter light.

[0008] In some embodiments, a supplementary light is provided on a side of the dimming layer, and inverted dots are also integrally provided in the dimming layer. The inverted dots are located on a side of the interior of the dimming layer away from the display switching structure, and the inverted dots are used to reflect the light emitted by the supplementary light onto the second display panel.

[0009] In some embodiments, the display switching structure includes a first substrate, a first electrode layer, a light-blocking component, a second electrode layer, and a second substrate that are sequentially stacked; The light-blocking component has two states. When the light-blocking component is in the first state, the light-blocking component allows the light emitted by the first display panel to exit, and at this time the second display panel does not display; When the light-blocking component is in the second state, the light-blocking component is used to reflect the light emitted by the second display panel, and at this time the first display panel does not display.

[0010] In some embodiments, the light-blocking component includes: A rotating shaft, disposed between the first electrode layer and the second electrode layer; A first protrusion, disposed on a side of the first electrode layer close to the second electrode layer; A second protrusion, disposed on a side of the second electrode layer close to the first electrode layer; A coil, disposed on the rotating shaft, and the first protrusion and the second protrusion cooperate to limit the coil; When the rotating shaft is perpendicular to the first electrode layer, the light of the first display panel can pass through the light-blocking component; when the rotating shaft is parallel to the first electrode layer, the light of the second display panel is reflected by the light-blocking component.

[0011] In some embodiments, the first protrusion and the second protrusion are permanent magnets.

[0012] In some embodiments, white ink is filled in the coil.

[0013] In some embodiments, the light-blocking component includes an anode layer, an oxide layer, and a cathode layer arranged in sequence; The anode layer and the cathode layer are transparent metal layers; When a voltage is applied to the oxide layer, the oxide layer is transparent and allows the light of the first display panel to pass through; When the voltage is disconnected from the oxide layer, the oxide layer is white and used to reflect the light of the second display panel.

[0014] In some embodiments, a plurality of white light-blocking layers are further spaced between the first electrode layer and the second electrode layer, and the plurality of white light-blocking layers separate the anode layer, the oxide layer, and the cathode layer into several light-blocking units.

[0015] In some embodiments, the first display panel, the display switching structure, and the second display panel are powered separately.

[0016] In some embodiments, the display device with a switchable display mode further includes an outer frame, and the first display panel, the display switching structure, and the second display panel are all arranged within the outer frame.

[0017] In a second aspect, an embodiment of the present application provides a switching method for a display device with a switchable display mode, which switches the display mode of the display device described in the first aspect. The method includes: Power on the first display panel, power off the second display panel, and power on or off the display switching structure, so that the light of the first display panel passes through the display switching structure; Or, power off the first display panel, power on the second display panel, and power on or off the display switching structure, so that the display switching structure reflects the light of the second display panel.

[0018] The display device and switching method with switchable display modes provided by the embodiments of the present application can switch between a first display panel and a second display panel using different display technologies through a display switching structure. The first display panel can be one of LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode), and LED (Light Emitting Diode), and the second display panel can be an electronic paper. Of course, the first display panel can be an electronic paper, and the second display panel can be one of LCD, OLED, or LED. In this way, the first display panel and the second display panel can be switched according to actual usage requirements to better meet the actual needs. For example, when the requirement for the refresh rate of the display panel is not high, the second display panel (electronic paper) can be selected for display. When high resolution, strong contrast, wide color gamut, and good stability are required, the first display panel can be switched for display. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0020] Figure 1 is a schematic structural diagram of a display device with a switchable display mode provided by an embodiment of the present application Figure 1 ; Figure 2 is a schematic structural diagram of a display device with a switchable display mode provided by an embodiment of the present application Figure 2 ; Figure 3 is a schematic structural diagram of a display device with a switchable display mode provided by an embodiment of the present application Figure 3 ; Figure 4 is a schematic structural diagram of a display device with a switchable display mode provided by an embodiment of the present application Figure 4 ; Figure 5 is a schematic diagram of the state of the display switching structure in a display device with a switchable display mode provided by the first embodiment of the present application Figure 1 ; Figure 6 is a schematic diagram of the state of the display switching structure in a display device with a switchable display mode provided by the first embodiment of the present application Figure 2 ; Figure 7Schematic diagram of the state of the display switching structure in the display device with switchable display modes provided in the second embodiment of the present application Figure 1 ; Figure 8 Schematic diagram of the state of the display switching structure in the display device with switchable display modes provided in the second embodiment of the present application Figure 2 。

[0021] Among them, the reference numerals in the drawings are as follows: 10. First display panel; 20. Display switching structure; 21. First substrate; 22. First electrode layer; 23. Light-blocking component; 231. Rotating shaft; 232. First protrusion; 233. Second protrusion; 234. Coil; 2340. White ink; 235. Anode layer; 236. Oxide layer; 237. Cathode layer; 238. White light-blocking layer; 24. Second electrode layer; 25. Second substrate; 26. Frame adhesive; 30. Second display panel; 40. Dimming layer; 41. Supplementary light; 42. Inverted dot; 50. Power supply structure; 51. First power supply layer; 52. Second power supply layer; 53. Third power supply layer; 54. Fourth power supply layer; 60. Outer frame. Detailed implementation manners

[0022] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the embodiments of the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the embodiments of the present application.

[0023] It should also be understood that the term "and / or" used in the specification of the embodiments of the present application and the appended claims refers to any combination and all possible combinations of one or more of the related listed items, and includes these combinations.

[0024] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0025] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the embodiments of the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the embodiments of the present application.

[0026] In addition, in the description of the specification of the embodiments of the present application and the appended claims, terms such as "first", "second", "third", etc. are only used for distinguishing descriptions, and should not be construed as indicating or implying relative importance.

[0027] The reference to "some embodiments" or "some embodiments" etc. described in the specification of the embodiments of the present application means that in one or more embodiments of the embodiments of the present application, specific features, structures or characteristics described in combination with the embodiments are included. Thus, statements such as "in some embodiments", "in some embodiments", "in other some embodiments", "in still other some embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiments, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Plurality" means two or more.

[0028] In a first aspect of the embodiments of the present application, a display device with a switchable display mode is provided, as Figure 1 shown, including a first display panel 10, a display switching structure 20, and a second display panel 30; The display switching structure 20 is disposed on one side of the first display panel 10; The second display panel 30 is disposed on the side of the display switching structure away from the first display panel 10; Wherein, the first display panel 10 and the second display panel 30 are display panels using different display technologies; When the first display panel 10 is normally displaying, the second display panel 30 does not display, and the display switching structure 20 allows the light of the first display panel 10 to exit; When the second display panel 30 is normally displaying, the first display panel 10 does not display, and the display switching structure 20 is used to reflect the light of the second display panel 30.

[0029] The display device with a switchable display mode provided by the embodiments of the present application realizes the switching between the first display panel 10 and the second display panel 30 of different display technologies through the display switching structure 20. In this way, according to the actual usage requirements, the first display panel 10 and the second display panel 30 can be switched to better meet the actual needs.

[0030] When the first display panel 10 is normally displaying, the second display panel 30 does not display, and the display switching structure 20 allows the light of the first display panel 10 to exit, so as to ensure the normal display of the first display panel 10. When the second display panel 30 is normally displaying, the first display panel 10 does not display, and the display switching structure 20 is used to reflect the light of the second display panel 30, so as to enhance the display brightness of the second display panel 30 and improve the display quality.

[0031] In applications, the first display panel 10 can be one of LCD (Liquid Crystal Display), OLED (Organic Light Emitting Diode), and LED (Light Emitting Diode), and the second display panel 30 can be an electronic paper; of course, the first display panel 10 can be an electronic paper, and the second display panel 30 can be one of LCD, OLED, or LED. The first display panel 10 and the second display panel 30 can also be display panels using other types of display technologies. In this way, for example, when the requirement for the refresh rate of the display panel is not high, it can be selected to switch to only use the second display panel 30 (electronic paper) for display, and when high resolution, strong contrast, wide color gamut, and good stability are required, the first display panel 10 can be switched for display.

[0032] The following description will be made with the first display panel 10 being an LCD and the second display panel 30 being an electronic paper.

[0033] In some embodiments, as Figure 1 and Figure 2 shown, a dimming layer 40 is further provided on the side of the second display panel 30 away from the display switching structure 20; When the dimming layer 40 is in the powered-on state, the dimming layer 40 is transparent and allows light to pass through collinearly; When the dimming layer 40 is in the powered-off state, the dimming layer 40 is opaque, and the dimming layer 40 is used to scatter light.

[0034] In the application, the material of the dimming layer 40 is PDLC (Polymer Dispersed Liquid Crystal). The dimming layer 40 can achieve the conversion of the polymer dispersed liquid crystal between transparency and coarse sand through voltage adjustment. Specifically, when the dimming layer 40 is powered on, the PDLC is in a transparent state. When in a power-off state, the PDLC presents the effect of coarse sand. The transparent PDLC layer allows light to pass through normally, and the coarse-sand-like PDLC layer can scatter light, improving the viewing angle.

[0035] In the embodiment of the present application, whether the first display panel 10 is displaying or the second display panel 30 is displaying, the dimming layer 40 located on the second display panel 30 can be powered on or off as the case may be, so that the first display panel 10 or the second display panel 30 can perform anti-peeking display or normal display. When normal display is required, the dimming layer 40 can be in a power-off state, and the PDLC material in the dimming layer 40 is in a coarse-sand state, thereby scattering the light passing through the PDLC, thus expanding the viewing angle of the entire display device and facilitating wide-angle viewing. When anti-peeking display is required, the dimming layer 40 can be in a powered-on state, and the PDLC material in the dimming layer 40 is in a transparent state. The light passing through the PDLC will be directly collimated and emitted. Especially when the first display panel 10 is displaying, since the first display panel 10 is on the bottom side of the entire display device and the light-emitting angle is small, the light directly passes through the transparent PDLC layer and will not be scattered, thereby achieving anti-peeking display. In this way, through the display switching structure 20 and the dimming layer 40, the display mode (anti-peeking or normal display) of the entire display device can be adjusted, thereby further improving the applicability of the display device with a switchable display method.

[0036] In some embodiments, as Figure 1 and Figure 2 shown, a supplementary light 41 is provided on the side of the dimming layer 40. An inverted dot 42 is also integrally provided in the dimming layer 40. The inverted dot 42 is located on the side of the dimming layer 40 away from the display switching structure 20 inside the dimming layer 40. The inverted dot 42 is used to reflect the light emitted by the supplementary light 41 onto the second display panel 30.

[0037] In an application, the dot patterns of a normal light guide plate are set below the light guide plate. Light enters from the side and undergoes total internal reflection through the dot patterns and is directed upward. When the dot patterns are set above the light guide plate, light entering from the side can be directed downward. In the embodiment of the present application, dot patterns are set in the upper layer inside the dimming layer 40, and the light will be directed downward, thereby supplementing light to the second display panel 30. Specifically, when the ambient light is weak, the principle of light supplement through the supplementary light lamp 41 and the inverted dot patterns 42 is as follows: In the embodiment of the present application, the dot patterns are integrated on the dimming layer 40, the light of the supplementary light lamp 41 is directed into the electronic paper, then passes through the electronic paper and enters the display switching structure 20, and is then reflected by the display switching structure 20 to the upper side for light supplement to the electronic paper, so as to achieve normal display.

[0038] In some embodiments, as Figure 3 shown, the first display panel 10, the display switching structure 20, and the second display panel 30 are separately powered. The display device with a switchable display mode is further provided with a power supply structure 50, where the power supply structure 50 includes a first power supply layer 51, a second power supply layer 52, and a third power supply layer 53. The first power supply layer 51 is used to separately supply power to the first display panel 10, the second power supply layer 52 is used to separately supply power to the display switching structure 20, and the third power supply layer 53 is used to separately supply power to the second display panel 30. Separately powering the above structures takes into account the inconsistent power-on and power-off requirements of each structure, facilitating targeted control.

[0039] In an application, as Figure 3 shown, the power supply structure 50 further includes a fourth power supply layer 54, and the fourth power supply layer 54 is used to separately supply power to the dimming layer 40, so as to cooperate with the display switching structure 20 to switch between the anti-peeping mode and the normal display mode.

[0040] In some embodiments, as Figure 4 shown, the display device with a switchable display mode further includes a frame 60, and the first display panel 10, the display switching structure 20, and the second display panel 30 are all arranged inside the frame 60. In addition, the dimming layer 40 is also arranged inside the frame 60. The presence of the frame 60 provides physical protection to the entire structure and can also block dust in the external environment from entering the interior of the display device.

[0041] In an application, in the first display panel 10 of the embodiment of the present application, taking LCD as an example, a total reflection polarizer needs to be selected to replace the upper polarizer, which can reflect the ambient light to improve the display effect. In the second display panel 30, taking the electronic paper as an example, the electronic paper display layer is a transparent reflective display, and a white background is required for contrast compensation.

[0042] In some embodiments, as Figures 4 to 6, the display switching structure 20 includes a first substrate 21, a first electrode layer 22, a light-blocking component 23, a second electrode layer 24, and a second substrate 25 that are sequentially stacked; The light-blocking component 23 has two states. When the light-blocking component 23 is in the first state, the light-blocking component 23 allows the light emitted by the first display panel 10 to exit, and at this time, the second display panel 30 does not display; When the light-blocking component 23 is in the second state, the light-blocking component 23 is used to reflect the light emitted by the second display panel 30, and at this time, the first display panel 10 does not display. In this way, the display switching between the first display panel 10 and the second display panel 30 is realized through the light-blocking component 23. The first state and the second state include being powered on or powered off.

[0043] In some embodiments, multiple groups of light-blocking components 23 are provided, and the multiple groups of light-blocking components 23 cooperate simultaneously to realize the display switching between the first display panel 10 and the second display panel 30.

[0044] In some embodiments, as Figure 5 and Figure 6 shown, the light-blocking component 23 includes a rotating shaft 231, a first protrusion 232, a second protrusion 233, and a coil 234; The rotating shaft 231 is disposed between the first electrode layer 22 and the second electrode layer 24; The first protrusion 232 is disposed on the side of the first electrode layer 22 close to the second electrode layer 24; The second protrusion 233 is disposed on the side of the second electrode layer 24 close to the first electrode layer 22; The coil 234 is disposed on the rotating shaft 231, and the first protrusion 232 and the second protrusion 233 cooperate to limit the coil 234; When the rotating shaft 231 is perpendicular to the first electrode layer 22, the light of the first display panel 10 can pass through the light-blocking component 23; when the rotating shaft 231 is parallel to the first electrode layer 22, the light of the second display panel 30 is reflected by the light-blocking component 23. Specifically, when the rotating shaft 231 is perpendicular to the first electrode layer 22, the light of the first display panel 10 can pass through the coil 234; when the rotating shaft 231 is parallel to the first electrode layer 22, the light of the second display panel 30 is reflected by the coil 234. In some embodiments, the first protrusion 232 and the second protrusion 233 are permanent magnets. In some embodiments, the coil 234 is filled with white ink 2340.

[0045] By applying a positive voltage or a negative voltage to the coil 234, the adjacent coils 234 are brought into contact with each other or parallel to each other, so as to realize the display switching between the first display panel 10 and the second display panel 30.

[0046] In the application, the first substrate 21 and the second substrate 25 are transparent substrates, and the first electrode layer 22 and the second electrode layer 24 are wiring layers for supplying electricity to the coil 234 so that the coil 234 generates magnetism and thus deflects. The specific principle is as follows: As Figure 5 shown, opposite voltages are applied to adjacent coils 234. When the left coil 234 generates magnetism, it repels the protrusion, rotates, and attracts and combines with the right coil 234 to produce a closing effect. At this time, only the second display panel 30 can display. The white ink 2340 in the coil 234 will reflect the light reflected by the inverted dot 42 upward, thereby compensating the light of the electronic paper; As Figure 6 shown, when opposite voltages are applied again, it can attract and reset with the protrusion to open, forming a shutter effect. The light forms quasi-straight light, producing a narrow viewing angle effect, and realizing the switching of the anti-peeping mode.

[0047] In the application, the switching principle between the first display panel 10 and the second display panel 30: When the second display panel 30 is normally displaying, that is, when the electronic paper is powered on for work, an electronic paper display signal is input to the display switching structure 20, that is, a positive voltage is applied to the light-blocking component 23 so that the ends of adjacent coils 234 are in contact to achieve a closing effect. At this time, the display switching structure 20 is converted into a flat white background (white ink 2340), and blocks the display of the first display panel 10 (at this time, the first display panel 10 is not powered), so that the second display panel 30, the electronic paper, can display normally. At this time, the dimming layer 40 is in a transparent state and can be used for the normal display of the electronic paper.

[0048] When the first display panel 10 is normally displaying, that is, when the LCD is powered on for display, an LCD display signal is input to the display switching structure 20, that is, a reverse voltage is applied to the light-blocking component 23 so that adjacent coils 234 are parallel to each other. At this time, the light-blocking component 23 forms a shutter structure and can allow light to pass through normally. Since the first display panel 10 is located at the bottom of the display device, the light-emitting angle is small. At this time, the dimming layer 40 is powered off so that the liquid crystal material in the dimming layer 40 is in a coarse sand state to dissipate the light passing through the dimming layer 40, thereby increasing the light-emitting angle for normal display. If anti-peeping display is required, only the dimming layer 40 needs to be powered on so that the PDLC is in a transparent state, and the light displayed by the first display panel 10 can be made into quasi-straight light, having an anti-peeping effect.

[0049] In some embodiments, as Figure 7 and Figure 8 shown, the light-blocking component 23 includes an anode layer 235, an oxide layer 236, and a cathode layer 237 arranged in sequence; The anode layer 235 and the cathode layer 237 are transparent metal layers; When a voltage is applied to the oxide layer 236, the oxide layer 236 becomes transparent, allowing the light of the first display panel 10 to pass through; When the voltage is disconnected from the oxide layer 236, the oxide layer 236 becomes white and is used to reflect the light of the second display panel 30.

[0050] By applying or disconnecting a voltage to the oxide layer 236, the display switching between the first display panel 10 and the second display panel 30 can be achieved. Specifically, when a voltage is applied, the first display panel 10 displays normally and the second display panel 30 does not display; when the voltage is disconnected, the second display panel 30 displays normally and the first display panel 10 does not display.

[0051] In an application, the anode layer 235 is connected to the first electrode layer 22, and the cathode layer 237 is connected to the second electrode layer 24. In another embodiment, the anode layer 235 is connected to the second electrode layer 24, and the cathode layer 237 is connected to the first electrode layer 22. The oxide layer 236 is a tungsten oxide layer (where the oxide is W 18 O 19 , white tungsten oxide, which can be made transparent by applying a voltage of 3.5V), and a voltage can be generated between the cathode layer 237 and the anode layer 235, so that the color of the oxide layer 236 located between the anode layer 235 and the anode layer 235 changes from white to transparent.

[0052] In some embodiments, as Figure 7 and Figure 8 shown, a plurality of white light-blocking layers 238 are further provided at intervals between the first electrode layer 22 and the second electrode layer 24. The plurality of white light-blocking layers 238 separate the anode layer 235, the oxide layer 236, and the cathode layer 237 into several light-blocking units. Each light-blocking unit can be controlled independently, that is, there is no interference between them. In an application, the white light-blocking layer 238 is a white resin. When switching to the display of the second display panel 30, the white light-blocking layer 238 and the oxide layer 236 form an overall white background, which reflects the light side-shot from the second display panel 30, thereby performing light compensation.

[0053] In an application, the switching principle of the first display panel 10 and the second display panel 30: When the second display panel 30 displays normally, that is, when the electronic paper is powered on and working, an electronic paper display signal is input to the display switching structure 20, that is, the voltage is disconnected from the oxide layer 236, so that the oxide layer 236 becomes white. At this time, the display switching structure 20 is converted into a flat white background (white resin and white tungsten oxide), and blocks the display of the first display panel 10 (at this time, the first display panel 10 is not powered), so that the second display panel 30 electronic paper displays normally. At this time, the dimming layer 40 is transparent, allowing the electronic paper to display normally.

[0054] When the first display panel 10 is in normal display, that is, when the LCD is powered on for display, an LCD display signal is input to the display switching structure 20, that is, a voltage is applied to the oxide layer 236 to make the tungsten oxide layer transparent, so that the light of the first display panel 10 can pass through normally. Since the first display panel 10 is located at the bottom of the display device, the light-emitting angle is small. At this time, the dimming layer 40 is powered off to make the PDLC in the dimming layer 40 in a coarse sand shape to dissipate the light passing through the dimming layer 40, thereby increasing the light-emitting angle for normal display. If privacy display is required, only the dimming layer 40 needs to be powered on to make the PDLC transparent, and the light displayed by the first display panel 10 can be made into a quasi-direct light beam, achieving a privacy effect.

[0055] In a second aspect, an embodiment of the present application provides a switching method for a display device with a switchable display mode, which switches the display mode of the display device with a switchable display mode described in the first aspect. The method includes: Power on the first display panel 10, power off the second display panel 30, and power on or off the display switching structure 20 to allow the light of the first display panel 10 to pass through the display switching structure 20.

[0056] Specifically, when the light-blocking component 23 is Figure 5 and Figure 6 as shown in the figure: Power on the first display panel 10 and power off the second display panel 30 to make the first display panel 10 in normal display, that is, when the LCD is powered on for display. At this time, an LCD display signal is input to the display switching structure 20, that is, a reverse voltage is applied to the light-blocking component 23 to make the adjacent coils 234 parallel to each other. At this time, the light-blocking component 23 forms a louver structure, and light can pass through normally.

[0057] When the light-blocking component 23 is Figure 7 and Figure 8 as shown in the figure: Power on the first display panel 10 and power off the second display panel 30 to make the first display panel 10 in normal display, that is, when the LCD is powered on for display. An LCD display signal is input to the display switching structure 20, that is, a voltage is applied to the oxide layer 236 to make the tungsten oxide layer transparent, so that the light of the first display panel 10 can pass through normally.

[0058] In some embodiments, power off the first display panel 10, power on the second display panel 30, and power on or off the display switching structure 20 to make the display switching structure 20 reflect the light of the second display panel 30.

[0059] Specifically, when the light-blocking component 23 isFigure 5 and Figure 6 When the structure shown in: Power on the second display panel 30 and power off the first display panel 10 so that the second display panel 30 can display normally. That is, when the electronic paper is powered on for display, input the electronic paper display signal to the display switching structure 20, that is, apply a positive voltage to the light-blocking component 23, so that the ends of the adjacent coils 234 are in contact to achieve the closing effect. At this time, the display switching structure 20 is converted into a flat white background (white ink 2340), and the second display panel 30 can display normally.

[0060] When the light-blocking component 23 is Figure 7 and Figure 8 When the structure shown in: Power on the second display panel 30 and power off the first display panel 10 so that the second display panel 30 can display normally. That is, when the electronic paper is powered on for display, input the electronic paper display signal to the display switching structure 20, that is, disconnect the voltage of the oxide layer 236, so that the oxide layer 236 becomes white. At this time, the display switching structure 20 is converted into a flat white background (white resin and white tungsten oxide), and the second display panel 30 can display normally.

[0061] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not described in detail or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0062] The above embodiments are only used to illustrate the technical solutions of the embodiments of the present application, and are not intended to limit them; although the embodiments of the present application have been described in detail with reference to the foregoing embodiments, 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 for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the embodiments of the present application.

Claims

1. A display device capable of switching display modes, characterized in that: include: a first display panel; A display switching structure, disposed on one side of the first display panel; A second display panel is disposed on a side of the display switching structure away from the first display panel; Wherein, the first display panel and the second display panel are display panels using different display technologies; When the first display panel displays normally, the second display panel does not display, and the display switching structure allows light from the first display panel to be emitted; When the second display panel displays normally, the first display panel does not display, and the display switching structure is used to reflect the light of the second display panel.

2. The display device capable of switching display modes according to claim 1, wherein: A dimming layer is further provided on a side of the second display panel away from the display switching structure; When the dimming layer is in a powered-on state, the dimming layer is transparent and allows light to pass through in a collimated manner; When the dimming layer is in a power-off state, the dimming layer is opaque, and the dimming layer is used for scattering light.

3. The display device capable of switching display modes according to claim 2, wherein: A fill light is provided on the side of the dimming layer, and an inverted dot is integrated in the dimming layer. The inverted dot is located on a side of the dimming layer away from the display switching structure, and the inverted dot is used to reflect the light emitted by the fill light onto the second display panel.

4. The display device capable of switching display modes according to claim 1, wherein: The display switching structure comprises a first substrate, a first electrode layer, a light blocking component, a second electrode layer and a second substrate which are stacked in sequence; The light blocking component has two states. When the light blocking component is in a first state, the light blocking component allows the light emitted by the first display panel to be emitted, and the second display panel does not display at this time; When the light blocking component is in the second state, the light blocking component is used to reflect the light emitted by the second display panel, and the first display panel does not display.

5. The display device capable of switching display modes according to claim 4, characterized in that: The light blocking component comprises: A rotating shaft, disposed between the first electrode layer and the second electrode layer; A first protrusion is provided on a side of the first electrode layer close to the second electrode layer; A second protrusion is provided on a side of the second electrode layer close to the first electrode layer; A coil is disposed on the rotating shaft, and the first protrusion and the second protrusion cooperate to limit the position of the coil; When the rotation axis is perpendicular to the first electrode layer, the light of the first display panel can pass through the light blocking component; when the rotation axis is parallel to the first electrode layer, the light of the second display panel is reflected by the light blocking component.

6. The display device capable of switching display modes according to claim 5, characterized in that: The first protrusion and the second protrusion are permanent magnets; And / or, the coil is filled with white ink.

7. The display device capable of switching display modes according to claim 4, wherein: The light blocking component comprises an anode layer, an oxide layer and a cathode layer arranged in sequence; The anode layer and the cathode layer are transparent metal layers; When a voltage is applied to the oxide layer, the oxide layer becomes transparent, allowing light from the first display panel to pass through; When the voltage is disconnected from the oxide layer, the oxide layer becomes white and is used to reflect the light of the second display panel.

8. The display device capable of switching display modes according to claim 7, wherein: A plurality of white light-blocking layers are arranged between the first electrode layer and the second electrode layer, and the plurality of white light-blocking layers separate the anode layer, the oxide layer and the cathode layer into a plurality of light-blocking units.

9. The display device capable of switching display modes according to any one of claims 1 to 8, characterized in that: The first display panel, the display switching structure and the second display panel are powered separately; And / or, the display device with switchable display modes further comprises an outer frame, and the first display panel, the display switching structure and the second display panel are all arranged in the outer frame.

10. A method for switching a display device capable of switching display modes, characterized in that: The method for switching the display mode of the display device capable of switching the display mode according to any one of claims 1 to 9 comprises: Powering on the first display panel, powering off the second display panel, and powering on or off the display switching structure, so that light from the first display panel passes through the display switching structure; Alternatively, the first display panel is powered off, the second display panel is powered on, and the display switching structure is powered on or off, so that the display switching structure reflects the light of the second display panel.

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