Display device capable of switching display modes and switching method

Abstract

The embodiments of the present application provide a display device with switchable display modes and a switching method, wherein the display device with switchable display modes includes: 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 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 light from the second display panel. The display device with switchable display modes and the switching method provided in the embodiments of the present application implement display switching between the first display panel and the second display panel using different display technologies through the display switching structure.

Description

Technical Field

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

[0002] Liquid crystal display technology, known for its lightweight, thin, radiation-free, and portable features, has become ubiquitous in our daily lives and work. Electronic paper display technology, on the other hand, aims to create electronic displays that are as thin and light as ordinary paper, flexible, and passively display images using external light. Because this technology often exhibits bi-stable properties, it requires no additional power supply to maintain image quality, thus saving significant energy.

[0003] Display panels made with liquid crystal display technology offer high resolution, strong contrast, a wide color gamut, and excellent stability, making them the preferred screen for current electronic products. However, due to its active display principle, LCD displays consume high power, can even cause screen flickering, and produce harmful blue light. Electronic paper display technology, a typical passive display technology, effectively protects the eyes from the harmful effects of light sources beneath the screen, enabling reading experiences similar to those of ordinary paper. Furthermore, it only requires power to refresh the display, making it energy-efficient and environmentally friendly. However, electronic paper displays have poor resolution and slow response times, making them suitable only for products with low refresh rate requirements, such as e-books. Currently, most electronic paper display products can only display in black and white, and even those that do achieve color display have a low color gamut, presenting limitations.

[0004] Therefore, it is necessary to study a display device and method capable of switching between different display technologies to address the shortcomings of the existing technology and solve the above problems. Summary of the Invention

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

[0006] In a first aspect, an embodiment of the present application provides a display device with switchable display modes, comprising:

[0007] a first display panel;

[0008] a display switching structure, provided on one side of the first display panel;

[0009] a second display panel, disposed on a side of the display switching structure away from the first display panel;

[0010] Wherein, the first display panel and the second display panel are display panels using different display technologies;

[0011] 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;

[0012] When the second display panel displays normally, the first display panel does not display, and the display switching structure is used to reflect light from the second display panel.

[0013] In some embodiments, a dimming layer is further provided on a side of the second display panel away from the display switching structure;

[0014] When the dimming layer is in a powered state, the dimming layer is transparent and allows light to pass through in a collimated manner;

[0015] When the dimming layer is in a power-off state, the dimming layer is opaque and is used for scattering light.

[0016] In some embodiments, 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 the side of the dimming layer away from the display switching structure. The inverted dot is used to reflect the light emitted by the fill light onto the second display panel.

[0017] 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 stacked in sequence;

[0018] 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;

[0019] 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 anything.

[0020] In some embodiments, the light blocking component includes:

[0021] a rotating shaft, disposed between the first electrode layer and the second electrode layer;

[0022] a first protrusion, provided on a side of the first electrode layer close to the second electrode layer;

[0023] a second protrusion, provided on a side of the second electrode layer close to the first electrode layer;

[0024] A coil is provided on the rotating shaft, wherein the first protrusion and the second protrusion cooperate to limit the position of the coil;

[0025] When the rotation axis is perpendicular to the first electrode layer, light from the first display panel can pass through the light-blocking component; when the rotation axis is parallel to the first electrode layer, light from the second display panel is reflected by the light-blocking component.

[0026] In some embodiments, the first protrusion and the second protrusion are permanent magnets.

[0027] In some embodiments, the coil is filled with white ink.

[0028] In some embodiments, the light blocking assembly includes an anode layer, an oxide layer, and a cathode layer arranged in sequence;

[0029] The anode layer and the cathode layer are transparent metal layers;

[0030] When a voltage is applied to the oxide layer, the oxide layer becomes transparent, allowing light from the first display panel to pass through;

[0031] 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.

[0032] In some embodiments, a plurality of white light-blocking layers are further disposed 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.

[0033] In some embodiments, the first display panel, the display switching structure, and the second display panel are powered separately.

[0034] In some embodiments, the display device capable of switching display modes further includes an outer frame, and the first display panel, the display switching structure, and the second display panel are all disposed within the outer frame.

[0035] In a second aspect, an embodiment of the present application provides a method for switching a display mode of a display device capable of switching display modes, wherein the display mode of the display device capable of switching display modes described in the first aspect is switched, the method comprising:

[0036] Powering on the first display panel, powering off the second display panel, and powering on or off the display switching structure to allow light from the first display panel to pass through the display switching structure;

[0037] 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.

[0038] The embodiments of the present application provide a display device and a switching method with switchable display modes, which realize switching between a first display panel and a second display panel with different display technologies through a display switching structure, wherein 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 electronic paper; of course, the first display panel can be 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 actual needs. For example, when the refresh rate requirement for the display panel is not high, you can choose to switch to only use the second display panel (electronic paper) for display, and when high resolution, strong contrast, wide color gamut and good stability are required, you can switch to the first display panel for display. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0040] Figure 1 This is a schematic diagram of the structure of a display device with switchable display modes provided in an embodiment of the present application. Figure 1 ;

[0041] Figure 2 This is a schematic diagram of the structure of a display device with switchable display modes provided in an embodiment of the present application. Figure 2 ;

[0042] Figure 3 This is a schematic diagram of the structure of a display device with switchable display modes provided in an embodiment of the present application. Figure 3 ;

[0043] Figure 4 This is a schematic diagram of the structure of a display device with switchable display modes provided in an embodiment of the present application. Figure 4 ;

[0044] Figure 5 This is a schematic diagram of the state of the display switching structure in the display device with switchable display mode provided in the first embodiment of the present application. Figure 1 ;

[0045] Figure 6This is a schematic diagram of the state of the display switching structure in the display device with switchable display mode provided in the first embodiment of the present application. Figure 2 ;

[0046] Figure 7 This is a state diagram of the display switching structure in the display device with switchable display mode provided in the second embodiment of the present application. Figure 1 ;

[0047] Figure 8 This is a state diagram of the display switching structure in the display device with switchable display mode provided in the second embodiment of the present application. Figure 2 .

[0048] Among them, the figure numbers are:

[0049] 10. a first display panel;

[0050] 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 glue;

[0051] 30. A second display panel;

[0052] 40. Dimming layer; 41. Fill light; 42. Inverted dots;

[0053] 50. Power supply structure; 51. First power supply layer; 52. Second power supply layer; 53. Third power supply layer; 54. Fourth power supply layer;

[0054] 60. Frame. DETAILED DESCRIPTION

[0055] In the following description, specific details such as specific system structures and technologies are provided for illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it should be clear to those skilled in the art 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 prevent unnecessary details from obstructing the description of the embodiments of the present application.

[0056] It should also be understood that the term "and / or" used in the description 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 associated listed items, and includes these combinations.

[0057] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0058] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0059] In addition, in the description of the embodiments of the present application and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0060] References to "some embodiments" or "some embodiments" described in the specification of the embodiments of the present application mean that one or more embodiments of the embodiments of the present application include specific features, structures or characteristics described in conjunction with the embodiment. Therefore, the statements "in some embodiments", "in some other embodiments", "in some other embodiments", etc. that appear in different places in this specification do not necessarily refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized in other ways. The terms "including", "comprising", "having" and their variations all mean "including but not limited to", unless otherwise specifically emphasized in other ways. "Multiple" refers to two or more.

[0061] In a first aspect, an embodiment of the present application provides a display device capable of switching display modes, such as Figure 1 As shown, it includes a first display panel 10, a display switching structure 20 and a second display panel 30;

[0062] The display switching structure 20 is disposed on one side of the first display panel 10;

[0063] The second display panel 30 is disposed on a side of the display switching structure away from the first display panel 10;

[0064] The first display panel 10 and the second display panel 30 are display panels using different display technologies;

[0065] When the first display panel 10 displays normally, the second display panel 30 does not display, and the display switching structure 20 allows light from the first display panel 10 to be emitted;

[0066] When the second display panel 30 displays normally, 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 .

[0067] The display device with switchable display modes provided in the embodiment of the present application realizes switching between the first display panel 10 and the second display panel 30 with different display technologies through the display switching structure 20. In this way, the first display panel 10 and the second display panel 30 can be switched according to actual usage requirements to better meet actual needs.

[0068] When the first display panel 10 is displaying normally, the second display panel 30 is not displaying, and the display switching structure 20 allows light from the first display panel 10 to be emitted, thereby ensuring normal display of the first display panel 10. When the second display panel 30 is displaying normally, the first display panel 10 is not displaying, and the display switching structure 20 is used to reflect light from the second display panel 30, thereby enhancing the display brightness of the second display panel 30 and improving display quality.

[0069] In applications, the first display panel 10 can be an LCD (Liquid Crystal Display), an OLED (Organic Light Emitting Diode), or an LED (Light Emitting Diode), and the second display panel 30 can be electronic paper. Of course, the first display panel 10 can be electronic paper, and the second display panel 30 can be an LCD, OLED, or LED. The first and second display panels 10, 30 can also use other display technologies. For example, when the refresh rate requirement for the display panel is not high, you can choose to switch to using only the second display panel 30 (electronic paper) for display. However, when high resolution, strong contrast, a wide color gamut, and good stability are required, you can switch to using the first display panel 10 for display.

[0070] The following description assumes that the first display panel 10 is an LCD and the second display panel 30 is an electronic paper.

[0071] In some embodiments, as Figure 1 and Figure 2 As shown, a dimming layer 40 is further provided on a side of the second display panel 30 away from the display switching structure 20;

[0072] When the dimming layer 40 is in a powered state, the dimming layer 40 is transparent and allows light to pass through in a collimated manner;

[0073] When the dimming layer 40 is in a power-off state, the dimming layer 40 is opaque and is used to scatter light.

[0074] In application, the material of the dimming layer 40 is PDLC (Polymer Dispersed Liquid Crystal). The dimming layer 40 can realize the conversion of the polymer dispersed liquid crystal between transparent and coarse sand by adjusting the voltage. Specifically, when the dimming layer 40 is powered on, the PDLC is transparent. When the power is off, the PDLC presents a coarse sand effect. The transparent PDLC layer allows light to pass normally, and the coarse sand PDLC layer can scatter light and improve the viewing angle.

[0075] In the embodiment of the present application, whether the first display panel 10 or the second display panel 30 is displaying, the dimming layer 40 located on the second display panel 30 can be powered on and off as appropriate, thereby enabling the first display panel 10 or the second display panel 30 to perform anti-peeping display or normal display. When normal display is required, the dimming layer 40 can be powered off, and the PDLC material in the dimming layer 40 becomes coarse sand, thereby scattering light passing through the PDLC, thereby expanding the display viewing angle of the entire display device and facilitating wide-angle viewing. When anti-peeping display is required, the dimming layer 40 can be powered on, and the PDLC material in the dimming layer 40 becomes transparent, so that light passing through the PDLC is directly collimated and emitted. In particular, when the first display panel 10 is displaying, since the first display panel 10 is on the bottom side of the entire display device, the light emission angle is small and directly passes through the transparent PDLC layer without scattering, thereby achieving anti-peeping display. In this way, the display mode (anti-peeping or normal display) of the entire display device can be adjusted through the display switching structure 20 and the dimming layer 40, thereby further improving the applicability of the display device with switchable display mode.

[0076] In some embodiments, as Figure 1 and Figure 2 As shown, a fill light 41 is provided on the side of the dimming layer 40, and an inverted dot 42 is also integrated 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. The inverted dot 42 is used to reflect the light emitted by the fill light 41 onto the second display panel 30.

[0077] In application, the normal dots of the light guide plate are set below the light guide plate, and the light coming in from the side is totally reflected by the dots and hits upwards. If the dots are set above the light guide plate, the light coming in from the side can be hit downwards. In the embodiment of the present application, dots are set in the upper layer inside the dimming layer 40, and the light will hit downwards, thereby filling in the light for the second display panel 30. Specifically, when the ambient light is weak, the fill light 41 and the inverted dots 42 are used for fill light principle: the embodiment of the present application adopts the method of integrating the dots on the dimming layer 40, and the light of the fill light 41 is hit into the electronic paper, and then passes through the electronic paper into the display switching structure 20, and then is reflected to the top by the display switching structure 20 to fill in the light of the electronic paper, so as to display normally.

[0078] In some embodiments, as Figure 3 As shown, the first display panel 10, the display switching structure 20, and the second display panel 30 are independently powered. That is, the display device with switchable display modes is also provided with a power supply structure 50, wherein 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 independently supply power to the first display panel 10, the second power supply layer 52 is used to independently supply power to the display switching structure 20, and the third power supply layer 53 is used to independently supply power to the second display panel 30. The independent power supply of the above structures facilitates targeted control, taking into account the inconsistent power on and off requirements of each structure.

[0079] In applications, such as Figure 3 As shown, the power supply structure 50 further includes a fourth power supply layer 54 , which is used to supply power to the dimming layer 40 alone, thereby cooperating with the display switching structure 20 to switch between the anti-peeping mode and the normal display mode.

[0080] In some embodiments, as Figure 4 As shown, the display device with switchable display modes further includes an outer frame 60. The first display panel 10, the display switching structure 20, and the second display panel 30 are all disposed within the outer frame 60. Furthermore, the dimming layer 40 is also disposed within the outer frame 60. The presence of the outer frame 60 provides physical protection for the entire structure and also prevents dust and the like from entering the interior of the display device.

[0081] In the present embodiment, the first display panel 10, taking an LCD as an example, requires a fully reflective polarizer to replace the upper polarizer, which can reflect ambient light to enhance the display effect. The second display panel 30, taking an electronic paper as an example, has a transparent reflective display layer, requiring a white background for contrast compensation.

[0082] In some embodiments, as Figures 4 to 6The 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 which are stacked in sequence;

[0083] 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 be emitted, and the second display panel 30 does not display;

[0084] When the light-blocking component 23 is in the second state, it reflects light from the second display panel 30, and the first display panel 10 does not display anything. Thus, the light-blocking component 23 enables the first display panel 10 and the second display panel 30 to switch between display modes. The first state and the second state include power on and power off.

[0085] In some embodiments, multiple groups of light blocking components 23 are provided, and the multiple groups of light blocking components 23 cooperate simultaneously to achieve display switching between the first display panel 10 and the second display panel 30 .

[0086] In some embodiments, as Figure 5 and Figure 6 As shown, the light blocking assembly 23 includes a rotating shaft 231, a first protrusion 232, a second protrusion 233 and a coil 234;

[0087] The rotating shaft 231 is disposed between the first electrode layer 22 and the second electrode layer 24;

[0088] The first protrusion 232 is disposed on a side of the first electrode layer 22 close to the second electrode layer 24 ;

[0089] The second protrusion 233 is provided on a side of the second electrode layer 24 close to the first electrode layer 22;

[0090] The coil 234 is disposed on the rotating shaft 231 , and the first protrusion 232 and the second protrusion 233 cooperate to limit the position of the coil 234 ;

[0091] When the rotating shaft 231 is perpendicular to the first electrode layer 22, light from 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, light from 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, light from the first display panel 10 can pass through the coil 234. When the rotating shaft 231 is parallel to the first electrode layer 22, light from 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.

[0092] By applying a forward voltage or a reverse voltage to the coils 234 , adjacent coils 234 are brought into contact with each other or are parallel to each other, so as to implement display switching between the first display panel 10 and the second display panel 30 .

[0093] In 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 providing electricity to the coil 234 so that the coil 234 generates magnetism and deflects. The specific principle is as follows: Figure 5 As shown, opposite voltages are applied to adjacent coils 234. When the left coil 234 generates magnetism, it produces a repulsive force with the protrusion, rotates, and is attracted to the right coil 234, resulting in a closed 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 dots 42 upward, thereby performing light compensation on the electronic paper. Figure 6 As shown, by applying the opposite voltage again, the protrusion can be attracted and reset to open, forming a shutter effect. The light passes through to form collimated light, producing a narrow viewing angle effect, thereby realizing the switching of the anti-peeping mode.

[0094] In application, the switching principle of the first display panel 10 and the second display panel 30 is as follows:

[0095] When the second display panel 30 is displaying normally, that is, when the electronic paper is powered on, the display switching structure 20 inputs the electronic paper display signal, that is, a positive voltage is applied to the light-blocking component 23, so that the ends of the adjacent coils 234 are in contact to achieve a closing effect. At this time, the display switching structure 20 is converted into a pure flat white background (white ink 2340) and blocks the display of the first display panel 10 (the first display panel 10 is not powered at this time), so that the electronic paper of the second display panel 30 is displayed normally. At this time, the dimming layer 40 is transparent, allowing the electronic paper to display normally.

[0096] When the first display panel 10 is performing 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 reverse voltage is applied to the light-blocking component 23, so that the adjacent coils 234 are parallel to each other. At this time, the light-blocking component 23 forms a shutter structure, which allows light to pass normally. Since the first display panel 10 is located at the bottom of the display device, the light output angle is small. At this time, the power is cut off to the dimming layer 40 so that the liquid crystal material in the dimming layer 40 is in the form of coarse sand, so as to dissipate the heat of the light passing through the dimming layer 40, thereby increasing the light output angle and performing normal display. If anti-peeping display is required, it is only necessary to power the dimming layer 40 so that the PDLC is transparent, so that the light displayed by the first display panel 10 is collimated light, which has an anti-peeping effect.

[0097] In some embodiments, as Figure 7 and Figure 8 As shown, the light blocking component 23 includes an anode layer 235, an oxide layer 236 and a cathode layer 237 arranged in sequence;

[0098] The anode layer 235 and the cathode layer 237 are transparent metal layers;

[0099] When a voltage is applied to the oxide layer 236 , the oxide layer 236 becomes transparent, allowing light from the first display panel 10 to pass through;

[0100] When the voltage is disconnected from the oxide layer 236 , the oxide layer 236 appears white and is used to reflect light from the second display panel 30 .

[0101] By applying or removing a voltage to the oxide layer 236, the display of the first display panel 10 and the second display panel 30 can be switched. Specifically, when the voltage is applied, the first display panel 10 displays normally, while the second display panel 30 does not display; when the voltage is removed, the second display panel 30 displays normally, while the first display panel 10 does not display.

[0102] In 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 (wherein the oxide is W 18 O 19 , white tungsten oxide, which can be made transparent by applying a voltage of 3.5V), a voltage can be generated between the cathode layer 237 and the anode layer 235, so that the oxide layer 236 located between the anode layer 235 and the anode layer 235 changes color, from white to transparent.

[0103] In some embodiments, as Figure 7 and Figure 8 As shown, a plurality of white light-blocking layers 238 are provided 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 a plurality of light-blocking units. Each light-blocking unit can be controlled individually, that is, there is no interference between them. In application, the white light-blocking layer 238 is a white resin. When switching to the second display panel 30 for display, the white light-blocking layer 238 and the oxide layer 236 form an overall white background, which reflects the light from the side of the second display panel 30, thereby performing light compensation.

[0104] In application, the switching principle of the first display panel 10 and the second display panel 30 is as follows:

[0105] When the second display panel 30 is displaying normally, that is, when the electronic paper is powered, the display switching structure 20 inputs the electronic paper display signal, disconnecting the voltage from the oxide layer 236, causing the oxide layer 236 to turn white. At this point, the display switching structure 20 transforms into a pure white background (white resin and white tungsten oxide), blocking the first display panel 10 from displaying (the first display panel 10 is not powered at this time), allowing the electronic paper on the second display panel 30 to display normally. At this point, the dimming layer 40 is transparent, allowing the electronic paper to display normally.

[0106] When the first display panel 10 is performing normal display, that is, when the LCD is powered and displaying, an LCD display signal is input to the display switching structure 20, that is, a voltage is applied to the oxide layer 236, so that the tungsten oxide layer becomes transparent, allowing light from the first display panel 10 to pass normally. Since the first display panel 10 is located at the bottom of the display device, the light output angle is small. At this time, the power is cut off to the dimming layer 40, so that the PDLC in the dimming layer 40 becomes coarse sand, which dissipates heat from the light passing through the dimming layer 40, thereby increasing the light output angle and performing normal display. If anti-peeping display is required, it is only necessary to power the dimming layer 40 to make the PDLC transparent, so that the light displayed by the first display panel 10 can be collimated light, which has an anti-peeping effect.

[0107] In a second aspect, an embodiment of the present application provides a method for switching a display mode of a display device capable of switching display modes, wherein the display mode of the display device capable of switching display modes described in the first aspect is switched, the method comprising:

[0108] The first display panel 10 is powered on, the second display panel 30 is powered off, and the display switching structure 20 is powered on or off, so that the light from the first display panel 10 passes through the display switching structure 20 .

[0109] Specifically, when the light blocking component 23 is Figure 5 and Figure 6 When the structure shown is:

[0110] The first display panel 10 is powered on and the second display panel 30 is powered off so that the first display panel 10 displays normally, that is, when the LCD is powered on and displayed, 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, which allows light to pass normally.

[0111] When the light blocking component 23 is Figure 7 and Figure 8 When the structure shown is:

[0112] The first display panel 10 is powered on and the second display panel 30 is powered off so that the first display panel 10 displays normally. 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 light from the first display panel 10 can pass normally.

[0113] In some embodiments, the first display panel 10 is powered off, the second display panel 30 is powered on, and the display switching structure 20 is powered on or off, so that the display switching structure 20 reflects the light of the second display panel 30 .

[0114] Specifically, when the light blocking component 23 is Figure 5 and Figure 6 When the structure shown is:

[0115] The second display panel 30 is powered on and the first display panel 10 is powered off so that the second display panel 30 displays normally. That is, when the electronic paper is powered on and displayed, the display switching structure 20 inputs the electronic paper display signal, that is, a positive voltage is applied to the light-blocking component 23, so that the ends of the adjacent coils 234 touch each other to achieve a closing effect. At this time, the display switching structure 20 is converted into a pure flat white background (white ink 2340), so that the second display panel 30 displays normally.

[0116] When the light blocking component 23 is Figure 7 and Figure 8 When the structure shown is:

[0117] The second display panel 30 is powered on, while the first display panel 10 is powered off, allowing the second display panel 30 to display normally. That is, when the electronic paper is powered and displaying, the display switching structure 20 inputs the electronic paper display signal, disconnecting the voltage from the oxide layer 236, causing the oxide layer 236 to turn white. At this point, the display switching structure 20 switches to a pure white background (white resin and white tungsten oxide), allowing the second display panel 30 to display normally.

[0118] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0119] The above-described embodiments are only used to illustrate the technical solutions of the embodiments of the present application, rather than to limit them. Although the embodiments of the present application are described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments 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, provided on one side of the first display panel; a second display panel, 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; The display switching structure includes a first substrate, a first electrode layer, a light blocking component, a second electrode layer and a second substrate 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; 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; The light blocking component includes: a rotating shaft, disposed between the first electrode layer and the second electrode layer; a first protrusion, provided on a side of the first electrode layer close to the second electrode layer; a second protrusion, provided on a side of the second electrode layer close to the first electrode layer; A coil is provided on the rotating shaft, wherein 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, light from the first display panel can pass through the light-blocking component; when the rotation axis is parallel to the first electrode layer, light from the second display panel is reflected by the light-blocking component.

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 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 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 the side of the dimming layer away from the display switching structure. 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 first protrusion and the second protrusion are permanent magnets; And / or, the coil is filled with white ink.

5. The display device capable of switching display modes according to any one of claims 1 to 4, wherein: 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 includes an outer frame, and the first display panel, the display switching structure and the second display panel are all arranged in the outer frame.

6. 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 with switchable display mode according to any one of claims 1 to 5 comprises: Powering on the first display panel, powering off the second display panel, and powering on or off the display switching structure to allow light from the first display panel to pass 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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