Display device

Abstract

The utility model provides a display device. The display device comprises a first polarized light processing element, a liquid crystal display element and a second polarized light processing element which are sequentially arranged along the Z axis. When the first polarized light processing element is in a first initial state, the second polarized light processing element is in a second initial state, and the liquid crystal display element is in a non-display state, light can pass through the display device in the Z-axis direction. When the first polarized light processing element is in a first working state, the second polarized light processing element is in a second working state and the liquid crystal display element is in a display state, the display device can display contents under the action of backlight; when the first polarized light processing element is in a first working state, the second polarized light processing element is in a second working state, and the liquid crystal display element is in a non-display state, the display device prevents light propagating in the Z-axis direction from passing through. According to the technical scheme, the problem that in the prior art, the display mode of a transparent displayer cannot be adjusted is solved.

Description

Technical Field

[0001] The utility model relates to the field of display devices, and specifically provides a display device. Background Art

[0002] The display mode of the transparent display in the prior art is not adjustable, and the entire panel can only be switched between the display mode and the transparent mode, and the function is relatively single. The art is in urgent need of a new transparent display that can be adjusted between more display modes to enhance the user's human-computer interaction experience.

[0003] Therefore, this field needs a new technical solution to solve the above problems. Utility Model Content

[0004] In order to solve the problem that the display mode of the transparent display in the prior art is not adjustable, the utility model provides a display device. The display device of the utility model comprises a first polarization light processing element, a liquid crystal display element and a second polarization light processing element arranged in sequence along the Z axis, wherein the first polarization light processing element can be switched between a first initial state and a first working state, the second polarization light processing element can be switched between a second initial state and a second working state, and the liquid crystal display element can be switched between a display state and a non-display state; when the first polarization light processing element is in the first initial state, the second polarization light processing element is in the second initial state and the liquid crystal display element is in a non-display state, light can pass through the display device along the Z axis direction; when the first polarization light processing element is in the first working state, the second polarization light processing element is in the second working state and the liquid crystal display element is in a display state, the display device can display content under the action of backlight; when the first polarization light processing element is in the first working state, the second polarization light processing element is in the second working state and the liquid crystal display element is in a non-display state, the display device prevents light propagating along the Z axis direction from passing through.

[0005] Some liquid crystal display elements in the prior art are usually provided with two polarizers with mutually orthogonal transmission axes on both sides, while the utility model respectively provides a first polarized light processing element and a second polarized light processing element on both sides of the liquid crystal display element to replace the polarizer, and the first polarized light processing element and the second polarized light processing element can be switched between the initial state and the working state, so as to realize that the display mode of the display device can be adjusted. When the first polarized light processing element is in the first initial state, the second polarized light processing element is in the second initial state, and the liquid crystal display element is in the non-display state, the light can pass through the display device along the Z axis direction to achieve the transparent effect of the display device. When the first polarized light processing element is in the first working state, the second polarized light processing element is in the second working state, and the liquid crystal display element is in the display state, the display device can display the content under the action of the backlight, that is, the display device can display the content to the user normally. When the first polarized light processing element is in the first working state, the second polarized light processing element is in the second working state, and the liquid crystal display element is in the non-display state, the display device prevents the light propagating along the Z axis from passing through, and the display device is observed from the outside and presents a completely black and opaque state, which can be used to protect privacy. In summary, the display device of the present invention can switch between three modes: transparent, completely black, and displaying content, to meet various different needs of users.

[0006] In the preferred technical scheme of the above-mentioned display device, the display device further comprises a backlight assembly, which is arranged on the side of the first polarized light processing element opposite to the liquid crystal display element; when the first polarized light processing element is in the first working state, the second polarized light processing element is in the second working state and the liquid crystal display element is in the display state, the display device can display content under the action of the backlight emitted by the backlight assembly, and the content can be received on the side of the second polarized light processing element opposite to the liquid crystal display element. Due to the limitation of its light-emitting principle, the transparent display in the prior art often displays a normal picture on one side when displaying content, and a mirrored picture can also be observed on the other side, and the privacy is poor. Through the above-mentioned configuration of the utility model, when the display device of the utility model needs to display content to a user located on one side of the second polarized light processing element, the backlight assembly arranged on the outside of the first polarized light processing element can emit light, so that the user can observe the picture, while other people located on the side of the first polarized light processing element cannot see the picture, thereby enhancing the privacy of the display device of the utility model.

[0007] In the preferred technical solution of the above display device, the first polarized light processing element includes a first guest-host liquid crystal, and the second polarized light processing element includes a second guest-host liquid crystal; in the first initial state, the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal is parallel to the Z axis, and in the second initial state, the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal is also parallel to the Z axis; in the first working state, the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal is parallel to the X axis, and in the second working state, the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal is parallel to the Y axis. Through the setting of the guest-host liquid crystal, when the first polarized light processing element and the second polarized light processing element are both in the working state, they can play the same role as the polarizer. When the first polarized light processing element and the second polarized light processing element are in the initial state, they do not have the characteristics of the polarizer to realize the function of transparent display. The above configuration ensures that the structure of the display device of the utility model to adjust the display mode is relatively simple, easy to control, and has a faster response speed.

[0008] In the preferred technical solution of the above-mentioned display device, the first polarized light processing element also has a first privacy state, in which the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal has components on the Z axis and the X axis, and the second polarized light processing element also has a second privacy state, in which the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal has components on the Z axis and the Y axis; when the first polarized light processing element is in the first privacy state, the second polarized light processing element is in the second privacy state, and the liquid crystal display element is in the display state, the content displayed by the display device can be received from a direction deviating from the Z axis. Through the above-mentioned setting, based on the characteristics of the guest-host liquid crystal, the utility model can also configure the first polarized light processing element and the second polarized light processing element to have a privacy state, in which the content displayed by the display device can be received from a direction deviating from the Z axis, so that the displayed content has directionality, further improving the privacy of the display device of the utility model.

[0009] In the preferred technical solution of the above display device, the driving electrodes of the liquid crystal display element, the first guest-host liquid crystal and the second guest-host liquid crystal are all configured as TFT pixel structures. Through the above arrangement, the display device can control light more meticulously, so that more different display modes can be set to meet user needs.

[0010] In the preferred technical solution of the above display device, the display device includes at least two display areas, and in any two different display areas, the first polarization processing element, the liquid crystal display element and / or the second polarization processing element may be in different states. Through the above settings, the display device can achieve partitioned display, that is, some areas are transparent, and some areas display content or appear completely black.

[0011] In the preferred technical solution of the above display device, the substrates of the liquid crystal display element, the first guest-host liquid crystal and the second guest-host liquid crystal are made of glass or flexible material. Through the above arrangement, the display device of the utility model can be configured as a flat display or a curved display.

[0012] In a preferred technical solution of the above display device, the switching mode of the first guest-host liquid crystal and the second guest-host liquid crystal is VA mode.

[0013] In the preferred technical solution of the above display device, the display device further comprises one or more polarizing components, any of which comprises a first polarizing plate and a second polarizing plate whose transmission axes are orthogonal to each other. The display effect of the picture is improved by setting the polarizing plates.

[0014] In the preferred technical solution of the above display device, the liquid crystal display element is bonded to the first polarized light processing element and the second polarized light processing element respectively by optical adhesive. Through the above arrangement, the display device of the utility model is guaranteed to have a high light transmittance. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0016] Figure 1 It is a structural schematic diagram of an embodiment of the display device of the utility model when it is transparent;

[0017] Figure 2 It is a structural schematic diagram of an embodiment of the display device of the utility model when it can display content;

[0018] Figure 3 This is a schematic structural diagram of an embodiment of the utility model when the display device is opaque;

[0019] Figure 4 It is a structural schematic diagram of an embodiment of the display device of the utility model that displays content in a predetermined direction;

[0020] Figure 5 It is a structural schematic diagram of an embodiment of the display device of the utility model when displaying in partitions;

[0021] Figure 6It is a structural schematic diagram of another embodiment of the display device of the utility model when displaying in partitions;

[0022] Figure 7 It is a structural schematic diagram of an embodiment of the utility model in which a polarizing component is arranged in a display device.

[0023] List of reference numerals:

[0024] 100. Display device; 10. First polarized light processing element; 11. First guest-host liquid crystal; 20. Liquid crystal display element; 30. Second polarized light processing element; 31. Second guest-host liquid crystal; 40. Backlight assembly; 41. Side light source; 50. Polarized light assembly. DETAILED DESCRIPTION

[0025] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0026] It should be noted that, in the description of the present invention, the terms “first” and “second” are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0027] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0028] In order to solve the problem that the display mode of the transparent display in the prior art cannot be adjusted, the utility model provides a display device 100 . The display device 100 of the utility model comprises a first polarized light processing element 10, a liquid crystal display element 20 and a second polarized light processing element 30 which are sequentially arranged along the Z axis, wherein the first polarized light processing element 10 can be switched between a first initial state and a first working state, the second polarized light processing element 30 can be switched between a second initial state and a second working state, and the liquid crystal display element 20 can be switched between a display state and a non-display state; when the first polarized light processing element 10 is in the first initial state, the second polarized light processing element 30 is in the second initial state and the liquid crystal display element 20 is in the non-display state, light can pass through the display device 100 along the Z axis direction; when the first polarized light processing element 10 is in the first working state, the second polarized light processing element 30 is in the second working state and the liquid crystal display element 20 is in the display state, the display device 100 can display content under the action of backlight; when the first polarized light processing element 10 is in the first working state, the second polarized light processing element 30 is in the second working state and the liquid crystal display element 20 is in the non-display state, the display device 100 prevents light propagating along the Z axis direction from passing through.

[0029] Figure 1 It is a structural schematic diagram of an embodiment of the display device of the utility model when it is transparent; Figure 2 It is a structural schematic diagram of an embodiment of the display device of the utility model when it can display content; Figure 3 1 is a schematic diagram of the structure of an embodiment of the display device of the utility model when it is opaque. The display device 100 of the utility model comprises a first polarized light processing element 10, a liquid crystal display element 20 and a second polarized light processing element 30 arranged in sequence along the Z axis. It should be pointed out that the "X axis", "Y axis" and "Z axis" in this specification are only used for description and do not constitute a limitation on the display device.

[0030] like Figure 1 and Figure 2As shown, the first polarized light processing element 10 can be switched between a first initial state and a first working state. In one or more embodiments, the first polarized light processing element 10 includes a first guest-host liquid crystal 11. In the guest-host liquid crystal, the host is a liquid crystal molecule, and the guest is a dye molecule. The dye molecule controls the degree of light absorption by following the deflection of the liquid crystal. The dye molecule is linear and parallel to the long axis of the liquid crystal molecule. When polarized light passes through the guest-host liquid crystal, when the polarization direction of the polarized light is parallel to the long axis direction of the liquid crystal molecule, the polarized light is absorbed by the dye; when the polarization direction of the polarized light is perpendicular to the long axis direction of the liquid crystal molecule, the polarized light can pass through the guest-host liquid crystal. In other words, the guest-host liquid crystal can be regarded as a controllable polarizer. In one or more embodiments, the first guest-host liquid crystal 11 is configured in a VA type switching mode, and the initial alignment is perpendicular to the substrate, that is, when no voltage is applied to the first guest-host liquid crystal 11, the long axis direction of the liquid crystal molecule is perpendicular to the substrate (based on Figure 1 The orientation shown, the long axis direction of the liquid crystal molecules is parallel to the Z axis), and the light perpendicular to the substrate direction of the first guest-host liquid crystal 11 can pass through the first guest-host liquid crystal 11. The pre-tilt angle of the liquid crystal molecules in the first guest-host liquid crystal 11 is configured to be biased toward the X axis, so that after the first guest-host liquid crystal 11 is applied with a voltage, the liquid crystal molecules change from being perpendicular to the substrate to being parallel to the substrate (based on Figure 2 In the orientation shown, the long axis direction of the liquid crystal molecules is parallel to the X-axis, and the X-axis is perpendicular to the paper surface), at this time, only the light with the polarization direction perpendicular to the long axis direction of the liquid crystal molecules can pass through the first guest-host liquid crystal 11. After the voltage is removed, the first guest-host liquid crystal 11 can still restore the initial alignment, that is, restore the first initial state. Alternatively, the first guest-host liquid crystal 11 can also be set to other suitable switching modes, such as TN type. Alternatively, the first guest-host liquid crystal 11 can also be replaced with other elements that can achieve similar functions, so that the first polarized light processing element 10 can achieve the function of a polarizer in the first working state.

[0031] In one or more embodiments, the substrate of the first guest-host liquid crystal 11 is glass. Alternatively, the substrate may also be configured as a flexible material, including but not limited to PET, COP, TAC, and the like.

[0032] Continue reading Figure 1 and Figure 2 , the second polarized light processing element 30 can be switched between the second initial state and the second working state. In one or more embodiments, the second polarized light processing element 30 includes a second guest-host liquid crystal 31. In one or more embodiments, the second guest-host liquid crystal 31 is configured in a VA type switching mode, that is, when no voltage is applied to the second guest-host liquid crystal 31, the long axis direction of the liquid crystal molecules is perpendicular to the substrate (based on Figure 1In the orientation shown, the long axis direction of the liquid crystal molecules is parallel to the Z axis), and the propagation light perpendicular to the substrate direction of the second guest-host liquid crystal 31 can pass through the second guest-host liquid crystal 31. After the second guest-host liquid crystal 31 is applied with voltage, the dye liquid crystal molecules change from being perpendicular to the substrate to being parallel to the substrate (based on Figure 2 In the orientation shown, the long axis direction of the liquid crystal molecules is parallel to the Y axis), at this time, only the light with the polarization direction perpendicular to the long axis direction of the liquid crystal molecules can pass through the second guest-host liquid crystal 31. Alternatively, the second guest-host liquid crystal 31 can also be set to other suitable switching modes, such as TN type. Alternatively, the second guest-host liquid crystal 31 can also be replaced with other elements that can achieve similar functions, so that the second polarized light processing element 30 can achieve the function of a polarizer in the second working state.

[0033] In one or more embodiments, the substrate of the second guest-host liquid crystal 31 is glass. Alternatively, the substrate may also be configured as a flexible material, including but not limited to PET, COP, TAC, and the like.

[0034] Continue reading Figure 1 and Figure 2 , the liquid crystal display element 20 can switch between the display state and the non-display state. In the display state, light passing through the liquid crystal display element 20 can form an image with different depths and staggered patterns, and then passing through the filter layer, a color image can be displayed. In the non-display state, light can pass through the liquid crystal display element 20. In one or more embodiments, the liquid crystal display unit is configured as a TN type switch mode, and the liquid crystal display element 20 can be switched between the display state and the non-display state by applying and canceling voltage. Alternatively, the liquid crystal display unit can also be configured as other switching modes. In one or more embodiments, the liquid crystal display element 20 is bonded to the first polarized light processing element 10 and the second polarized light processing element 30 respectively through optical glue. Optical glue includes but is not limited to OCA, OCR, etc.

[0035] In one or more embodiments, the substrate of the liquid crystal display element 20 is glass. Alternatively, the substrate may also be configured as a flexible material, including but not limited to PET, COP, TAC, etc. When the substrates of the liquid crystal display element 20, the first guest-host liquid crystal 11, and the second guest-host liquid crystal 31 are all configured as flexible materials, the display device 100 can be made into a curved screen.

[0036] Continue reading Figure 1In one or more embodiments, the display device 100 further includes a backlight assembly 40. The backlight assembly 40 is used to supply sufficient brightness and uniformly distributed light sources to the liquid crystal display element 20 so that it can display images normally. The backlight assembly 40 is arranged on the side of the first polarized light processing element 10 opposite to the liquid crystal display element so as to emit light propagating in the positive direction of the Z axis. Alternatively, the backlight assembly 40 may also be arranged on the side of the second polarized light processing element 30 opposite to the liquid crystal display element so as to emit light propagating in the negative direction of the Z axis. In one or more embodiments, the backlight assembly 40 includes a side light source 41 and a light guide plate, a diffuser, a BEF (prism sheet, used to enhance brightness), and a DBEF (reflective polarizer, used to enhance brightness) stacked together in sequence along the positive direction of the Z axis. Alternatively, the backlight assembly 40 may also be configured as other structures.

[0037] Based on the above settings, Figure 1 As shown, when the first polarized light processing element 10 is in the first initial state, the second polarized light processing element 30 is in the second initial state, and the liquid crystal display element 20 is in the non-display state, light can pass through the display device 100 along the Z axis direction. The display device 100 can be observed to be in a transparent state from both the positive direction of the Z axis and the negative direction of the Z axis.

[0038] like Figure 2 As shown, when the first polarized light processing element 10 is in the first working state, the second polarized light processing element 30 is in the second working state, and the liquid crystal display element 20 is in the display state, the display device 100 can display content under the action of the backlight. In one or more embodiments, the backlight assembly 40 is disposed on the side of the first polarized light processing element 10 opposite to the liquid crystal display element, and the displayed content can be received on the side of the second polarized light processing element 30 opposite to the liquid crystal display element, for example, observed by a person or an image capture device. Alternatively, the backlight assembly 40 can also be disposed on the side of the second polarized light processing element 30 opposite to the liquid crystal display element to be received.

[0039] like Figure 3 As shown, when the first polarized light processing element 10 is in the first working state, the second polarized light processing element 30 is in the second working state and the liquid crystal display element 20 is in the non-display state, the display device 100 prevents light propagating along the Z-axis direction from passing through, and the display device 100 appears in a black and opaque state. In this configuration, the display device 100 can be used to block privacy.

[0040] Figure 4It is a structural schematic diagram of an embodiment of the display device 100 of the utility model that displays content in a predetermined direction. In one or more embodiments, the first polarized light processing element 10 also has a first privacy state, in which the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal 11 has components on the Z axis and the X axis. The second polarized light processing element 30 also has a second privacy state, in which the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal 31 has components on the Z axis and the Y axis. When the first polarized light processing element 10 is in the first privacy state, the second polarized light processing element 30 is in the second privacy state, and the liquid crystal display element 20 is in the display state, the content displayed by the display device 100 can be received from a direction deviating from the Z axis. Exemplarily, based on Figure 4 In the orientation shown, the displayed content can be observed from the right side of the display device 100 , but cannot be observed from the left side or the brightness of the observed content is very low.

[0041] Figure 5 It is a structural schematic diagram of an embodiment of the display device 100 of the utility model when displaying in partitions; Figure 6 It is a structural schematic diagram of another embodiment of the display device 100 of the utility model when the partition display is performed. In one or more embodiments, the driving electrodes of the liquid crystal display element 20, the first guest-host liquid crystal 11 and the second guest-host liquid crystal 31 are configured as a TFT pixel structure, so that the control of the display device 100 is more refined, and different contents can be displayed in different regions. The display device 100 includes at least two display areas, and the states of the first polarization light processing element 10, the liquid crystal display element 20 and / or the second polarization light processing element 30 in any two different display areas can be different. Exemplarily, the display device 100 includes a display area A and a display area B. In the display area A, the first polarization light processing element 10 is in the first initial state, the second polarization light processing element 30 is in the second initial state, and the liquid crystal display element 20 is in the non-display state, so that the display area A is in a transparent state. In the display area B, when the first polarization light processing element 10 is in the first working state, the second polarization light processing element 30 is in the second working state, and the liquid crystal display element 20 is in the display state, the display device 100 can display content under the action of the backlight. In another embodiment, the display device 100 includes a display area C and a display area D, and both display areas C and D are in a private state, so that different images displayed on the display areas C and D face two directions respectively. Alternatively, the display device 100 can also be divided into more display areas according to actual needs, such as 3, 4, etc., for displaying different images or presenting a transparent, black state, etc.

[0042] Figure 7It is a schematic diagram of the structure of an embodiment of the display device 100 of the utility model in which a polarizing component 50 is set. In one or more embodiments, the display device 100 further includes one or more polarizing components 50, and any polarizing component 50 includes a first polarizer and a second polarizer whose transmission axes are orthogonal to each other. Exemplarily, when the first polarized light processing element 10 is in the first initial state, the second polarized light processing element 30 is in the second initial state, and the liquid crystal display element 20 is in the display state, polarizing components 50 can be respectively set on both sides of the first polarized light processing element 10, the second polarized light processing element 30, and the liquid crystal display element 20, so that the displayed picture effect is better when the brightness is sufficient. It should be noted that the transmission axes of adjacent polarizers need to be parallel to each other. For example, the polarizer set between the first polarized light processing element 10 and the liquid crystal display element 20 needs to ensure that the transmission axes are parallel to each other so that light can pass through. Alternatively, the setting of the polarizing component 50 can also be cancelled.

[0043] So far, the technical solution of the present invention has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A display device, characterized in that: The display device comprises a first polarization light processing element, a liquid crystal display element, and a second polarization light processing element arranged in sequence along the Z axis, wherein the first polarization light processing element can be switched between a first initial state and a first working state, the second polarization light processing element can be switched between a second initial state and a second working state, and the liquid crystal display element can be switched between a display state and a non-display state; When the first polarization light processing element is in the first initial state, the second polarization light processing element is in the second initial state, and the liquid crystal display element is in a non-display state, light can pass through the display device along the Z-axis direction; When the first polarized light processing element is in the first working state, the second polarized light processing element is in the second working state, and the liquid crystal display element is in the display state, the display device can display content under the action of the backlight; When the first polarized light processing element is in the first working state, the second polarized light processing element is in the second working state, and the liquid crystal display element is in a non-display state, the display device blocks light propagating along the Z-axis direction from passing through.

2. The display device according to claim 1, characterized in that The display device further comprises a backlight assembly, wherein the backlight assembly is arranged on a side of the first polarized light processing element opposite to the liquid crystal display element; When the first polarized light processing element is in the first working state, the second polarized light processing element is in the second working state, and the liquid crystal display element is in the display state, the display device can display content under the action of the backlight emitted by the backlight assembly, and the content can be received on the side of the second polarized light processing element opposite to the liquid crystal display element.

3. The display device according to claim 1, characterized in that The first polarized light processing element includes a first guest-host liquid crystal, and the second polarized light processing element includes a second guest-host liquid crystal; In the first initial state, the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal is parallel to the Z axis, and in the second initial state, the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal is also parallel to the Z axis; In the first working state, the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal is parallel to the X axis, and in the second working state, the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal is parallel to the Y axis.

4. The display device according to claim 3, characterized in that: The first polarized light processing element further has a first privacy state, in which the long axis direction of the liquid crystal molecules of the first guest-host liquid crystal has components on the Z axis and the X axis, and the second polarized light processing element further has a second privacy state, in which the long axis direction of the liquid crystal molecules of the second guest-host liquid crystal has components on the Z axis and the Y axis; When the first polarized light processing element is in the first privacy state, the second polarized light processing element is in the second privacy state, and the liquid crystal display element is in the display state, the content displayed by the display device can be received from a direction deviating from the Z axis.

5. The display device according to claim 3, characterized in that: The liquid crystal display element, the driving electrodes of the first guest-host liquid crystal and the second guest-host liquid crystal are all configured into a TFT pixel structure.

6. The display device according to claim 5, characterized in that: The display device includes at least two display areas, and in any two different display areas, the first polarization processing element, the liquid crystal display element and / or the second polarization processing element may be in different states.

7. The display device according to claim 3, characterized in that: The substrates of the liquid crystal display element, the first guest-host liquid crystal and the second guest-host liquid crystal are made of glass or flexible materials.

8. The display device according to claim 3, characterized in that: The switching mode of the first guest-host liquid crystal and the second guest-host liquid crystal is VA mode.

9. The display device according to claim 1, characterized in that: The display device further comprises one or more polarizing components, any of which comprises a first polarizing plate and a second polarizing plate whose transmission axes are orthogonal to each other.

10. The display device according to claim 1, characterized in that The liquid crystal display element is bonded to the first polarization processing element and the second polarization processing element respectively by optical adhesive.

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