Display screen body and display equipment

Abstract

The utility model relates to a display screen body and display equipment. The display screen body comprises a screen body, a liquid crystal assembly and a power switch circuit. The liquid crystal assembly is located on one side of the screen body. The power switch circuit is located on the side face of the liquid crystal assembly and used for enabling the liquid crystal assembly to be switched between a power-on state and a screen-off state. The liquid crystal component comprises a dyeing liquid crystal material and / or a chiral liquid crystal material, so that the liquid crystal component presents a preset color and / or a preset pattern in a screen-off state. The display equipment comprises the display screen body.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display screen body, in particular to a display screen body and a display device. BACKGROUND

[0002] With the rapid development of electronic technology, display screen body technology emerges as the times require. In order to ensure that the display screen body has strong contrast in the power-on state and the screen-off state, generally, the display screen body will present black in the screen-off state. The existing display screen body is usually spliced by a plurality of unit plates cut by a computer numerical control machine tool, and the unit plates after cutting may have white edges and other defects due to the plate edges, which will affect the overall display effect of the display screen body. For example, the white edges and other defects will be particularly obvious in the screen-off state. CONTENT OF THE UTILITY MODEL

[0003] Therefore, it is necessary to provide a display screen body and a display device which improve the display effect in the screen-off state.

[0004] In a first aspect, the present application provides a display screen body. The display screen body comprises a screen body, a liquid crystal assembly and a power switch circuit:

[0005] The liquid crystal assembly is located on one side of the screen body;

[0006] The power switch circuit is located on the side of the liquid crystal assembly, and is used to switch the liquid crystal assembly between the power-on state and the screen-off state;

[0007] The liquid crystal assembly comprises dyed liquid crystal material and / or chiral liquid crystal material, so that the liquid crystal assembly presents a preset color and / or a preset pattern in the screen-off state.

[0008] In a second aspect, the present application provides a display device. The display device comprises the display screen body of any one of the first aspect.

[0009] The display screen body and the display device, the display screen body comprises a screen body, a liquid crystal assembly and a power switch circuit: the liquid crystal assembly is located on one side of the screen body; the power switch circuit is located on the side of the liquid crystal assembly, and is used to switch the liquid crystal assembly between the power-on state and the screen-off state; the liquid crystal assembly comprises dyed liquid crystal material and / or chiral liquid crystal material, so that the liquid crystal assembly presents a preset color and / or a preset pattern in the screen-off state. The display screen body provided by the embodiment of the present application is located on one side surface of the screen body, so that the flatness of the display screen body surface is higher. At the same time, the display screen body can present a preset color and / or a preset pattern in the screen-off state, thereby reducing the influence of visual effect caused by white edges and other defects in the screen-off state, and improving the display effect of the display screen body in the screen-off state. BRIEF DESCRIPTION OF DRAWINGS

[0010] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only represent some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0011] Figure 1 A structural schematic diagram of a display screen body provided by the embodiment;

[0012] Figure 2 A structural schematic diagram of a liquid crystal assembly provided by the embodiment;

[0013] Figure 3 A contrast schematic diagram of the liquid crystal assembly provided by the embodiment switching between a powered state and a screen-off state;

[0014] Figure 4 A structural schematic diagram of a screen body provided by the embodiment. DETAILED DESCRIPTION

[0015] In order to facilitate the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The accompanying drawings show embodiments of the present application. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0017] It can be understood that the terms "first", "second", and the like used in the present application can be used herein to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from another element. For example, without departing from the scope of the present application, the first transparent conductive film layer can be referred to as the second transparent conductive film layer, and similarly, the second transparent conductive film layer can be referred to as the first transparent conductive film layer. The first transparent conductive film layer and the second transparent conductive film layer are both transparent conductive film layers, but they are not the same transparent conductive film layer.

[0018] It can be understood that "connection" in the following embodiments, if the circuits, modules, units, etc. connected to each other have the transmission of electrical signals or data, it should be understood as "electrical connection", "communication connection", etc.

[0019] It can be understood that "at least one" means one or more, and "multiple" means two or more. "At least part of the element" means part or all of the element.

[0020] As used herein, the singular forms "a", "an" and "the" can include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "comprise / comprising" or "have / having" specifies the presence of stated features, integers, steps, operations, components, parts, or combinations thereof, but does not exclude the presence or addition of one or more other features, integers, steps, operations, components, parts, or combinations thereof. At the same time, the term "and / or" used in the specification includes any and all combinations of the related listed items.

[0021] The present application is made by the inventors based on the understanding and research of the following problems:

[0022] The existing display screen body is usually spliced by a plurality of unit plates cut by a computer numerical control machine tool. The unit plates after cutting may have white edges and other undesirable phenomena due to the plate edges, which will affect the overall display effect of the display screen body. At the same time, there may be seams between the plurality of unit plates, which will also cause the surface flatness of the display screen body to be low. Obviously, the existing display screen body will have poor display effect in the off-screen state due to the white edges and other undesirable phenomena of the unit plate edges and the existence of the seams between the unit plates.

[0023] Based on this, the present application provides a display screen body capable of improving the display effect of the display screen body in the off-screen state.

[0024] As shown in Figure 1 The display screen body of one embodiment includes a screen body 102, a liquid crystal assembly 104, and a power switch circuit 106:

[0025] The liquid crystal assembly 104 is located on one side of the screen body 102.

[0026] The power switch circuit 106 is located on the side of the liquid crystal assembly 104, and is used to switch the liquid crystal assembly 104 between the power-on state and the off-screen state.

[0027] The liquid crystal assembly 104 includes dyed liquid crystal material and / or chiral liquid crystal material, so that the liquid crystal assembly 104 presents a preset color and / or a preset pattern in the off-screen state.

[0028] The screen body 102 is configured to realize image display function. Optionally, the screen body 102 can realize touch detection function or other functions in addition to the image display function. Optionally, the screen body 102 can be an LED screen body, so that the display screen is an LED display screen when the screen body 102 is an LED screen body.

[0029] The liquid crystal assembly 104 is composed of a liquid crystal molecule layer and transparent conductive films located on both sides of the liquid crystal molecule layer. The liquid crystal molecule layer in the liquid crystal assembly 104 is mixed by liquid crystal molecules, dyed liquid crystal materials and / or chiral liquid crystal materials, and the liquid crystal molecule layer realizes modulation of light by changing the arrangement direction of the liquid crystal molecules therein. The transparent conductive films in the liquid crystal molecule layer are used as electrodes to apply an electric field to the liquid crystal molecule layer to control the arrangement direction of the liquid crystal molecules in the liquid crystal molecule layer, and are also used to provide mechanical support for the liquid crystal molecule layer.

[0030] In an exemplary embodiment, as shown in Figure 1 The display screen further includes a transparent adhesive layer 108 located between the screen body 102 and the liquid crystal assembly 104.

[0031] The transparent adhesive layer 108 is configured to realize the bonding between the screen body 102 and the liquid crystal assembly 104, to avoid the separation of the screen body 102 and the liquid crystal assembly 104 due to the low firmness therebetween, and to ensure the device reliability of the display screen.

[0032] The power switch circuit 106 is configured to control the arrangement direction of the liquid crystal molecules in the liquid crystal assembly 104. The liquid crystal molecules will arrange along the direction of the electric field under the action of the electric field, thereby changing the optical properties of the liquid crystal assembly 104. Specifically, the liquid crystal assembly 104 does not affect the image display function of the screen body 102 in the powered-on state, and the liquid crystal assembly 104 presents a preset color and / or a preset pattern in the screen-off state.

[0033] The dyed liquid crystal material is a composite material composed of liquid crystal molecules and dye molecules. The dyed liquid crystal material can regulate the optical properties of the liquid crystal assembly 104 through the interaction between the liquid crystal molecules and the dye molecules. The dye molecules have dichroism and can realize monochrome display function or multi-color display function, so that the liquid crystal assembly 104 including the dyed liquid crystal material can present a preset color; the preset color is determined by the color of the dye molecules in the dyed liquid crystal material.

[0034] The chiral liquid crystal material is a liquid crystal material containing a chiral center or a chiral group. The chiral center in the molecular structure of the chiral liquid crystal material is asymmetric, which causes the chiral liquid crystal material to have no mirror symmetry. The chiral liquid crystal material can form a helical arrangement in space, and thus the liquid crystal assembly 104 containing the chiral liquid crystal material can present a preset pattern.

[0035] In an exemplary embodiment, the dyeing liquid crystal material is a thermally responsive dyeing liquid crystal material or a light responsive dyeing liquid crystal material.

[0036] The chiral liquid crystal material is a thermally responsive chiral liquid crystal material or a light responsive chiral liquid crystal material.

[0037] The thermally responsive dyeing liquid crystal material is a dyeing liquid crystal material whose color changes correspondingly when the absorption characteristics change under temperature change.

[0038] The light responsive dyeing liquid crystal material is a dyeing liquid crystal material whose color changes correspondingly when the absorption characteristics change under light change.

[0039] The thermally responsive chiral liquid crystal material is a chiral liquid crystal material whose helical structure changes under temperature change, causing the arrangement of liquid crystal molecules and optical properties to change.

[0040] The light responsive chiral liquid crystal material is a chiral liquid crystal material whose helical structure changes under light change, causing the arrangement of liquid crystal molecules and optical properties to change.

[0041] In an exemplary embodiment, the light responsive chiral liquid crystal material includes at least one of azobenzene, diarylethene, molecular motor, and a-cyanostilbene.

[0042] In an exemplary embodiment, the thermally responsive chiral liquid crystal material includes a liquid crystal elastomer.

[0043] In an exemplary embodiment, the preset pattern is drawn based on ultraviolet light and erased based on green light.

[0044] The wavelength of the ultraviolet light is 100nm-400nm, and the wavelength of the green light is 495nm-570nm.

[0045] Optionally, the preset pattern can be drawn on the liquid crystal assembly 104 based on an ultraviolet light pen capable of emitting ultraviolet light.

[0046] Optionally, the green light used for erasing the preset pattern can be emitted by the screen body 102 in the powered-on state to the liquid crystal assembly 104. Further optionally, the display screen body can include an erasing button, and after the erasing button receives a pressing signal, the screen body 102 emits green light to the liquid crystal assembly 104 to erase the preset pattern presented by the liquid crystal assembly 104 in the screen-off state.

[0047] Specifically, since the preset pattern can be erased based on the green light and drawn based on the ultraviolet light after being erased, the preset pattern of the liquid crystal assembly 104 can be repeatedly erased and drawn, and further, the display screen body including the liquid crystal assembly 104 can realize the notepad function in the screen-off state through the preset pattern that is repeatedly erased and drawn.

[0048] Specifically, since the preset color and the preset pattern presented by the liquid crystal assembly in the screen-off state can be set in advance, the display screen body can be unified with the architectural style of the location where the display screen body is located by changing the preset color and / or the preset pattern, so as to avoid the display screen body only being presented as black in the screen-off state and being incompatible with the architectural style or not meeting the display effect requirements of the user.

[0049] The display screen body described above includes a screen body, a liquid crystal assembly, and a power switch circuit: the liquid crystal assembly is located on one side of the screen body; the power switch circuit is located on the side of the liquid crystal assembly and is used for switching the liquid crystal assembly between the powered-on state and the screen-off state; the liquid crystal assembly includes dyed liquid crystal material and / or chiral liquid crystal material, so as to present a preset color and / or a preset pattern in the screen-off state. The display screen body provided by the embodiments of the present application has the liquid crystal assembly located on one side surface of the screen body, so that the flatness of the surface of the display screen body is higher, and since the display screen body can present a preset color and / or a preset pattern in the screen-off state, the visual effect influence caused by the white border and other adverse phenomena in the screen-off state can be reduced, and the display effect of the display screen body in the screen-off state is improved.

[0050] In an exemplary embodiment, as shown in Figure 2 The liquid crystal assembly 202 includes a liquid crystal molecule layer 2022, a first transparent conductive film layer 2024, and a second transparent conductive film layer 2026. The liquid crystal molecule layer 2022 is located between the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026. The first transparent conductive film layer 2024 is located on one side surface of the screen body, and the second transparent conductive film layer 2026 is located on the side surface away from the screen body. The two electrodes of the power switch circuit are connected with the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026, respectively.

[0051] The liquid crystal molecule layer 2022 is a component including a plurality of liquid crystal molecules in the liquid crystal assembly 202. The liquid crystal molecules have the characteristics of mesomorphic substances, that is, they have the flowability of a liquid and the optical anisotropy of a crystal under certain conditions. Specifically, the liquid crystal molecule layer 2022 includes dyed liquid crystal material and / or chiral liquid crystal material.

[0052] The first transparent conductive film layer 2024 and the second transparent conductive film layer 2026 are transparent conductive materials with high transparency and good conductivity. Optionally, the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026 can each be composed of an indium tin oxide (ITO) film. Specifically, the ITO film is a material formed by taking a polyethylene terephthalate film (PET) as a substrate and plating an ITO conductive film on the surface of the PET film through a plating process. Thus, when the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026 are ITO films, they have the flexibility of PET and the conductivity of ITO.

[0053] Specifically, the two electrodes of the power switch circuit are connected to the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026, respectively. Thus, an electric field can be formed in the liquid crystal molecule layer 2022, thereby driving the liquid crystal molecules to change in arrangement. Specifically, the liquid crystal molecules affect the observation effect of the preset color and / or preset pattern on the human eye by changing in the arrangement direction, and further, as shown in (a) of FIG. 1, the liquid crystal molecules in the liquid crystal molecule layer are in an energized state, and the arrangement direction of the liquid crystal molecules coincides with the direction of the electric field. As can be easily understood, since the direction of the electric field coincides with the vertical observation direction of the display screen body by the human eye, the human eye cannot observe the liquid crystal molecules in the energized state at this time without affecting the image display function of the screen body itself, as shown in (b) of FIG. 1, the liquid crystal molecules in the liquid crystal molecule layer are in an off-screen state, and the arrangement direction of the liquid crystal molecules is perpendicular to the direction of the electric field. At this time, the human eye can observe the preset color and / or preset pattern presented by the liquid crystal molecules. It should be noted that the vertical observation direction of the display screen body by the human eye refers to the observation direction when the line of sight of the human eye is vertically incident to the surface of the display screen body. Figure 3 Figure 3

[0054] Specifically, the two electrodes of the power switch circuit are connected to the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026, respectively, and the circuit signals of the power switch circuit are guided from the first transparent conductive film layer 2024 and the second transparent conductive film layer 2026 to the non-display area of the display screen body through the flexible printed circuit board.

[0055] ​​In the embodiment, the power switch circuit applies an electric field in the liquid crystal molecule layer through the first transparent conductive film layer and the second transparent conductive film layer in the liquid crystal assembly, so that the liquid crystal assembly is switched between the powered-on state and the screen-off state, and thus the arrangement of the liquid crystal molecules in the liquid crystal molecule layer is different between the powered-on state and the screen-off state. Specifically, the arrangement direction of the liquid crystal molecules in the powered-on state coincides with the vertical observation direction of the display screen body by the human eye, so that the liquid crystal molecules do not affect the image display function of the screen body in the powered-on state. The arrangement direction of the liquid crystal molecules in the screen-off state is perpendicular to the vertical observation direction of the display screen body by the human eye, so that the liquid crystal molecules present a preset color and / or a preset pattern in the screen-off state.

[0056] In one exemplary embodiment, as shown in FIG. 4, the screen body 404 includes a screen layer 4042 and an encapsulation layer 4044. Figure 4

[0057] The encapsulation layer 4044 is located between the screen layer 4042 and the liquid crystal assembly.

[0058] The screen layer 4042 is spliced by a plurality of unit boards, and the encapsulation layer 4044 is spliced by a plurality of encapsulation components, and each unit board corresponds to each encapsulation component.

[0059] The screen layer 4042 is a component in the screen body 404 for realizing the image display function. The screen layer 4042 integrates electronic elements required for realizing the image display function. Optionally, the electronic elements can include display chips, drive chips, resistors, capacitors, and other electronic elements. As can be easily understood, in the case of an LED display screen, the display chip in the electronic elements of the screen layer 4042 is an LED display chip.

[0060] The unit board is a basic unit constituting the screen layer 4042. Optionally, the unit board can be a printed circuit board (PCB). Optionally, the plurality of unit boards are obtained by cutting a computer numerical control machine tool. Specifically, each unit board can realize the image display function, so that the screen layer 4042 spliced by a plurality of unit boards can realize the image display function.

[0061] ​The encapsulation layer 4044 is a component of the screen body 404, which is configured to protect the screen layer 4042. Specifically, the encapsulation layer 4044 is configured to protect the electronic components in the screen layer 4042 from impurities (e.g., dust, oxygen, moisture, etc.) in the external environment. In addition, the encapsulation layer 4044 is configured to provide mechanical support for the screen layer 4042 to ensure that the display screen has a certain mechanical strength. Furthermore, the encapsulation layer 4044 has high transparency to ensure that the optical performance of the screen layer 4042 is not affected, thereby ensuring the image display effect of the display screen.

[0062] Optionally, the encapsulation layer 4044 can be composed of epoxy resin, adhesive film, glass, plastic, or other materials with high transparency.

[0063] The encapsulation component is a basic unit of the encapsulation layer 4044. Since the encapsulation layer 4044 is located between the screen layer 4042 and the liquid crystal assembly, and the encapsulation layer 4044 is composed of multiple encapsulation components, and each unit plate corresponds to each encapsulation component, it is easy to understand that the encapsulation component is located on the side surface of each unit plate close to the liquid crystal assembly, and the encapsulation component is located between the screen layer 4042 and the liquid crystal assembly.

[0064] In this embodiment, the screen body includes a screen layer for realizing image display function and an encapsulation layer for protecting the screen layer. The screen layer is composed of multiple unit plates, and the encapsulation layer is composed of multiple encapsulation components. Since the multiple unit plates are obtained by cutting with a computer numerical control machine tool, the plate edges of the cut unit plates may have white edge defects, and there may be uneven seams. Therefore, the encapsulation layer composed of multiple encapsulation components corresponding to each unit plate also has an uneven flatness defect. Based on this, the liquid crystal assembly located on the side of the encapsulation layer away from the screen layer in this embodiment can not only improve the flatness of the surface of the display screen, but also reduce the white edge defect between the multiple unit plates to improve the display effect of the display screen in the screen-off state.

[0065] In an exemplary embodiment, the display screen further includes an infrared detection frame located around the screen body. The infrared detection frame is configured to detect the position and changing posture of a target object through infrared rays.

[0066] The target object refers to an individual performing a posture changing action in front of the display screen. The position and changing posture of the target object can be captured and analyzed by the infrared detection frame. Optionally, the target object can be a human body part, for example, a human hand. Therefore, the infrared detection frame is configured to detect the position and changing posture of the human hand through infrared rays.

[0067] In an exemplary embodiment, the first transparent conductive film layer is formed with a capacitance detection circuit; the capacitance detection circuit is configured to detect a capacitance change caused by a touch signal acting on the first transparent conductive film.

[0068] The touch signal acting on the first transparent conductive film layer can be generated by a human finger touching the first transparent conductive film.

[0069] Specifically, the capacitance detection circuit can accurately determine the touch position of the touch signal, so that the display screen body can provide touch feedback to the touch signal based on the touch position, thereby improving the display effect change flexibility of the display screen body to improve the user experience.

[0070] Specifically, in the case where the display screen body includes an infrared detection frame and the first transparent conductive film layer is formed with a capacitance detection circuit, the infrared detection of the infrared detection frame and the capacitance detection of the capacitance detection circuit can be mutually coordinated to improve the touch response accuracy and speed of the display screen body.

[0071] Specifically, since the touch response accuracy and speed of the capacitance detection circuit formed on the first transparent conductive film layer are relatively high, in the case where the first transparent conductive film layer is formed with a capacitance detection circuit, the display screen body can not include an infrared detection frame, that is, the display screen body can only realize the touch detection function through the capacitance detection circuit, which can improve the touch response accuracy and speed of the display screen body, and at the same time, the display screen body can be made thinner and lighter due to the absence of the infrared detection frame, thereby reducing the manufacturing cost of the display screen body.

[0072] In an exemplary embodiment, in the case where the liquid crystal assembly includes a thermally responsive dye liquid crystal material and / or a thermally responsive chiral liquid crystal material, the display screen body further includes a temperature adjusting assembly.

[0073] The temperature adjusting assembly is located on a side surface of the liquid crystal assembly close to the screen body; the temperature adjusting assembly is configured to set the liquid crystal assembly at a preset temperature, so that a preset color changes based on the preset temperature.

[0074] The temperature adjusting assembly is a component in the liquid crystal assembly for converting electrical energy into heat energy; the temperature adjusting assembly can be in the form of a film; optionally, the temperature adjusting assembly can include a temperature adjusting circuit, a conductive material, an insulating material, and a protective layer; optionally, the temperature adjusting assembly can be heated by resistance or thermocouple to realize the temperature adjusting function.

[0075] Specifically, the temperature adjusting assembly is located on a side surface of the liquid crystal assembly close to the screen body, that is, the temperature adjusting assembly is located between the liquid crystal assembly and the screen body.

[0076] Specifically, based on the temperature adjustment function of the temperature adjustment assembly, the temperature of the display screen body will also change accordingly, so that, for example, in the case of exposure of the display screen body to a low temperature environment, if the display screen body surface is frosted, it will seriously affect the display effect of the display screen body, therefore, if the display screen body includes a temperature adjustment assembly, by setting the liquid crystal assembly at a higher temperature, the display screen body surface can also be prevented from frosting to ensure that the display screen body has a higher display effect under different ambient temperatures.

[0077] In this embodiment, since the display screen body includes a thermally responsive dyed liquid crystal material and / or a thermally responsive chiral liquid crystal material, the thermally responsive dyed liquid crystal material and / or the thermally responsive chiral liquid crystal material can exhibit different color changes based on different temperatures, therefore, by adjusting the temperature of the liquid crystal assembly by the temperature adjustment assembly, the preset color of the liquid crystal assembly changes accordingly based on the preset temperature, which enables the liquid crystal assembly to exhibit a more desirable preset color in the screen-off state, improving the flexibility of the display screen body in display effect.

[0078] In one exemplary embodiment, the display screen body further includes an overdrive circuit, which is located in the screen body layer of the display screen body.

[0079] The overdrive circuit is connected with the power switch circuit; the overdrive circuit is used to generate a transient high voltage signal or a high current signal at the moment when the liquid crystal assembly is switched between the powered-on state and the screen-off state, so as to improve the change speed of the arrangement mode of the liquid crystal molecules in the liquid crystal molecule layer.

[0080] In this embodiment, since the display screen body further includes an overdrive circuit having a connection relationship with the power switch circuit, the overdrive circuit can generate a high voltage signal or a high current signal at the moment when the power switch circuit is switched between conduction and closure, which can accelerate the response speed of the liquid crystal molecules, so that the liquid crystal molecules quickly enter a new arrangement mode, avoiding the phenomenon of delay of the liquid crystal molecules in the switching process, which leads to the phenomenon of ghosting of the preset color and / or the preset pattern in the process of switching between the powered-on state and the screen-off state of the display screen body, and further, improving the display effect of the display screen body.

[0081] It can be understood that the above-mentioned display screen body can also adopt other forms, which are not limited to the forms mentioned in the above-mentioned embodiments, as long as it can achieve the function of improving the display effect in the screen-off state.

[0082] The display screen body can be applied to display devices with display functions, such as various personal digital assistants (PDAs), personal computers, notebook computers, smart phones, tablet computers, smart televisions, smart vehicle-mounted devices, smart sound boxes, smart mirror bodies, outdoor advertising screens, and the like.

[0083] In one exemplary embodiment, a display device is also provided, and the display device includes the display screen body of any one of the above-described display screen body embodiments.

[0084] In the description of the present specification, the description referring to the terms "some embodiments", "other embodiments", and the like means that the specific features, structures, materials, or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example.

[0085] The technical features of the above-described embodiments can be combined in any manner. In order to make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, however, as long as the combinations of the technical features do not contradict each other, they should be considered within the scope of the present application.

[0086] The above-described embodiments only express several implementation manners of the present application, and the description is relatively specific and detailed, but it should not be understood as a limitation on the scope of the present application. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.

Claims

1. A display screen body, characterized by comprising: The display screen body comprises a screen body, a liquid crystal assembly and a power switch circuit. The liquid crystal assembly is located on one side of the screen body. The power switch circuit is located on the side of the liquid crystal assembly, and is used for switching the liquid crystal assembly between a power-on state and a screen-off state. The liquid crystal assembly comprises a dyed liquid crystal material, so that the liquid crystal assembly presents a preset color in the screen-off state; or the liquid crystal assembly comprises a chiral liquid crystal material, so that the liquid crystal assembly presents a preset color and / or a preset pattern in the screen-off state.

2. The display screen body of claim 1, wherein, The liquid crystal assembly comprises a liquid crystal molecule layer, a first transparent conductive film layer and a second transparent conductive film layer, the liquid crystal molecule layer is located between the first transparent conductive film layer and the second transparent conductive film layer, the first transparent conductive film layer is located on one side surface of the screen body, and the second transparent conductive film layer is located away from the one side surface of the screen body; two electrodes of the power switch circuit are connected with the first transparent conductive film layer and the second transparent conductive film layer respectively.

3. The display screen body of claim 1, wherein, The display screen body further comprises a transparent adhesive layer, which is located between the screen body and the liquid crystal assembly.

4. The display screen body of claim 1, wherein, The screen body comprises a screen layer and an encapsulation layer. The encapsulation layer is located between the screen layer and the liquid crystal assembly. The screen layer is spliced by a plurality of unit plates, the encapsulation layer is spliced by a plurality of encapsulation components, and each unit plate corresponds to each encapsulation component.

5. The display screen body of claim 4, wherein, The display screen body further comprises an infrared detection frame, which is located around the screen body; the infrared detection frame is used for detecting the position and changing posture of a target object through infrared rays.

6. The display screen body of claim 1, wherein, The dyed liquid crystal material is a thermal responsive dyed liquid crystal material or a light responsive dyed liquid crystal material. The chiral liquid crystal material is a thermal responsive chiral liquid crystal material or a light responsive chiral liquid crystal material.

7. The display screen body of claim 1, wherein, The screen body is an LED screen body.

8. The display screen body of claim 2, wherein, The first transparent conductive film layer is formed with a capacitance detection circuit; the capacitance detection circuit is used for detecting the capacitance change caused by a touch signal acting on the first transparent conductive film.

9. The display screen body according to any one of claims 1 to 8, wherein The preset pattern is drawn based on ultraviolet light and erased based on green light.

10. A display device, characterized by comprising: The display device comprises the display screen body according to any one of claims 1-9.

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