Cholesterol liquid crystal display device and control system thereof

Abstract

The invention provides a cholesterol liquid crystal display device and a control system thereof. The cholesterol liquid crystal display device includes a cholesterol liquid crystal display unit, a solar cell unit, and a control unit. The control unit further comprises a management module and an energy storage module, the solar cell unit provides electric energy for the management module, the management module stores the electric energy in the energy storage module, and when the picture of the cholesterol liquid crystal display unit needs to be updated and the potential difference of the energy storage module reaches the charging cut-off voltage, the energy storage module can release the stored electric energy. Therefore, the electric energy required by the cholesterol liquid crystal display unit to update pictures is provided.

Description

Technical Field

[0001] The present invention relates to the technical field of a cholesterol liquid crystal display device and a control system thereof, and in particular to a cholesterol liquid crystal display device and a control system thereof which utilizes an energy storage module such as a super capacitor for energy storage and power supply. Background Art

[0002] Cholesteric liquid crystal displays have a bistable characteristic, so they only consume power during the screen update process, and almost no power is consumed after the screen update is completed. Therefore, the characteristics of cholesteric liquid crystal displays are suitable for using environmental energy in combination with energy storage devices as a power source, such as using sunlight in combination with energy storage devices to provide power.

[0003] Energy storage devices usually refer to batteries, such as disposable batteries or rechargeable batteries. However, because both have a short service life, they require regular maintenance or replacement, which incurs replacement costs. In addition, many precious metal raw materials are used in the manufacturing process of batteries. In addition to the high cost, these raw materials have a lot of impact on the environment from mining to processing, and even when replacing batteries.

[0004] On the other hand, compared with traditional capacitors, the capacitance density of energy storage devices is much higher, so they can store a large amount of charge and have a strong large current discharge capability. They are particularly suitable for devices that require short-term high-power output. Compared with traditional batteries, because the electrochemical reaction rate of energy storage devices is slower, the cycle life is longer and does not require multiple replacements. Compared with batteries that take a long time to charge, energy storage devices have the characteristics of fast charging and discharging and can provide power in real time. In addition, because the capacitance and internal resistance of energy storage devices vary less with temperature, their performance and characteristics vary less at different temperatures, and a wider operating temperature range can be achieved.

[0005] Therefore, energy storage devices are very suitable for use with cholesterol liquid crystal displays. In order to avoid disposable batteries or rechargeable batteries from continuously damaging the ecology and to effectively reduce costs, it is necessary to develop ideal technical methods to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to provide a cholesterol liquid crystal display device and a control system thereof, so that when the cholesterol liquid crystal display device does not need to update the screen, the management module can store the electric energy in an energy storage module after receiving the electric energy provided by the solar cell unit. When the screen needs to be updated, the energy storage module can release the stored electric energy to provide the cholesterol liquid crystal display unit with the electric energy required to update the screen, thereby forming a self-sufficient display power supply system.

[0007] The present invention relates to a cholesteric liquid crystal display device, which comprises a cholesteric liquid crystal display unit, a solar cell unit, and a control unit.

[0008] The cholesterol liquid crystal display unit includes a light-incoming surface for receiving external light, which is used to update the display screen after receiving electric energy, and the required electric energy comes from the solar cell unit. The solar cell unit includes a light-receiving surface attached to the surface of the cholesterol liquid crystal display unit away from the light-incoming surface, wherein the light-receiving surface can convert part of the external light that penetrates the cholesterol liquid crystal display unit into electric energy. The control unit further includes a management module electrically connected to the solar cell unit, and an energy storage module electrically connected to the management module and the cholesterol liquid crystal display unit, wherein the management module is an ambient energy management chip (Ambient Energy Manager) for managing the passing electric energy. The electric energy converted by the solar cell is stored in the energy storage module via the management module to be provided to the cholesterol liquid crystal display unit for use. When the screen of the cholesterol liquid crystal display unit needs to be updated and the potential difference of the energy storage module reaches a charging cut-off voltage, the energy storage module can release the stored electric energy to provide the cholesterol liquid crystal display unit with electric energy to update the display screen.

[0009] The energy storage module may be a super capacitor or a capacitor, and the energy storage module has a charging cut-off voltage (Vovch).

[0010] The control unit further includes a main control module and a timing control module. The main control module is electrically connected to the management module and the energy storage module, respectively, and the timing control module is electrically connected to the main control module and the cholesterol liquid crystal display unit, that is, the management module is electrically coupled to the main control module, the energy storage module is also electrically coupled to the main control module, the main control module is electrically coupled to the timing control module, and the timing control module is electrically coupled to the cholesterol liquid crystal display unit. When the screen of the cholesterol liquid crystal display unit needs to be updated and the potential difference of the energy storage module reaches the charging cut-off voltage, the management module will transmit a power supply signal to the main control module, and the energy storage module releases the stored electric energy to the main control module, then the main control module can continue to supply electric energy to the timing control module, and the timing control module continues to provide electric energy to the cholesterol liquid crystal display unit to update the display screen.

[0011] Next, the main control module further includes a processing module and a first power management module electrically connected to the processing module, and the timing control module further includes a timing controller and a second power management module of a DC-to-DC converter electrically connected to the main control module, and the timing controller is electrically coupled to the second power management module, and the DC-to-DC converter is also electrically coupled to the second power management module.

[0012] When the screen of the cholesterol liquid crystal display unit needs to be updated and the energy storage module receives the electric energy from the solar cell unit to reach the charging cut-off voltage, the management module will transmit a power supply signal to start the first power management module, and the energy storage module will release the stored electric energy to the first power management module, and then transfer the electric energy to the second power management module through the DC-to-DC converter, and then provide it to the cholesterol liquid crystal display unit for use, and the processing module transmits the screen content to be updated to the timing controller, and then provides it to the cholesterol liquid crystal display unit for display.

[0013] Among them, the charging cut-off voltage can be set to a range of 4 volts to 4.1 volts. When the potential difference of the energy storage module reaches a range of 4 volts to 4.1 volts, the management module can transmit the power supply signal to the main control module. At the same time, the energy storage module can release the stored electrical energy to the main control module. The main control module continues to supply electrical energy to the timing control module, and the timing control module continues to provide electrical energy to the cholesterol liquid crystal display unit to update the display screen.

[0014] The main control module further includes a data temporary storage area, one of which is built-in and external. The data temporary storage area receives at least one screen data from an electronic device in one of wireless and wired ways to transmit it to the timing controller and display it on the cholesterol liquid crystal display unit.

[0015] Furthermore, the present invention may also be a control system of a cholesterol liquid crystal display device, for managing the power supply of the cholesterol liquid crystal display device, wherein the cholesterol liquid crystal display device comprises a cholesterol liquid crystal display unit and a solar cell unit attached to a surface of the cholesterol liquid crystal display unit away from a light incident surface, and the control system of the cholesterol liquid crystal display device includes at least an environmental energy management module, a super capacitor, a main control module, and a timing control module.

[0016] The environmental energy management module is electrically connected to the solar cell unit, and the environmental energy management module receives the electric energy provided by the solar cell unit. The super capacitor is electrically connected to the environmental energy management module, and the super capacitor receives and stores the electric energy from the environmental energy management module, wherein the super capacitor has a charging cut-off voltage. The main control module is electrically connected to the environmental energy management module and the super capacitor, and the timing control module is electrically connected to the main control module and the cholesterol liquid crystal display unit.

[0017] When the cholesterol liquid crystal display unit needs to update the screen and the electric energy stored in the super capacitor reaches the charging cut-off voltage, the environmental energy management module transmits a power supply signal to start the main control module, and the super capacitor transmits the stored electric energy to the main control module, and the main control module then transmits the electric energy to the timing control module to provide the cholesterol liquid crystal display unit with the updated screen. Subsequently, the main control module further includes a processing module and a first power management module electrically connected to the processing module, and the timing control module further includes a timing controller, a DC-DC converter electrically connected to the main control module, and a second power management module electrically connected to the timing controller and the DC-DC converter.

[0018] Among them, the charging cut-off voltage of the supercapacitor can be set to a range of 4 volts to 4.1 volts. When the screen of the cholesterol liquid crystal display unit needs to be updated and the electrical energy stored in the supercapacitor reaches the charging cut-off voltage, the environmental energy management module transmits a power supply signal to start the first power management module. After the supercapacitor transmits the stored electrical energy to the first power management module, it will continue to transmit the electrical energy to the second power management module through the DC-to-DC converter, and then provide it to the cholesterol liquid crystal display unit for use. The processing module transmits the screen content to be updated to the timing controller, and then provides it to the cholesterol liquid crystal display unit for display.

[0019] Therefore, by utilizing the cholesterol liquid crystal display device and its control system provided by the present invention, when the cholesterol liquid crystal display device does not need to update the screen, the management module only needs to store the electric energy in the energy storage module after receiving the electric energy provided by the solar cell unit. When the screen needs to be updated, the energy storage module can release the stored electric energy to provide the cholesterol liquid crystal display unit with the electric energy required to update the screen, thereby forming a self-sufficient display power supply system.

[0020] Other features and beneficial effects of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other beneficial effects of the present invention can be achieved and obtained by the structures specifically pointed out in the description, claims, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, 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 some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. The positional relationships described in the drawings in the following description are based on the directions in which the components are drawn in the diagrams, unless otherwise specified.

[0022] Figure 1 is a schematic diagram of a cholesterol liquid crystal display device of the present invention;

[0023] Figure 2 is a schematic diagram of a control system of a cholesterol liquid crystal display device of the present invention;

[0024] Figure 3 is a schematic diagram of a cholesterol liquid crystal display device of the present invention receiving wireless communication; and

[0025] Figure 4 It is a flow chart of the control method of the cholesterol liquid crystal display device of the present invention.

[0026] Reference numerals:

[0027] 1: Cholesteric liquid crystal display device

[0028] 2: Control system

[0029] 3: Cholesteric liquid crystal display unit

[0030] 5: Solar cell

[0031] 7: Control unit

[0032] 9: Electronic devices

[0033] 70: Management module

[0034] 74: Main control module

[0035] 75: Temporary data storage area

[0036] 76: Timing control module

[0037] 80: Energy storage module

[0038] 742: Processing module

[0039] 744: First power management module

[0040] 762: Timing Controller

[0041] 764: DC-DC Converter

[0042] 766: Second power management module

[0043] I: Light incident surface

[0044] S: Surface

[0045] E: Finishing surface DETAILED DESCRIPTION

[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all the embodiments; the technical features designed in different implementation modes of the present invention described below can be combined with each other as long as they do not conflict with each other; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0047] In the description of the present invention, it should be understood that the terms "center", "lateral", "up", "down", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more. In addition, the term "including" and any variation thereof all mean "at least including".

[0048] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integrally formed connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0049] The present invention relates to a cholesterol liquid crystal display device and its control system, please refer to Figure 1 , Figure 1 Schematic diagram of the cholesterol liquid crystal display device of the present invention. Figure 1 It can be seen that the cholesterol liquid crystal display device 1 includes a cholesterol liquid crystal display unit 3, a solar cell unit 5, and a control unit 7. After receiving ambient light from the outside, part of the light source can penetrate the cholesterol liquid crystal display unit 3 and be absorbed by the solar cell unit 5 to generate electrical energy, while part of the light source will also cause the image display of the cholesterol liquid crystal display unit 3 to be reflected into the human eye's vision.

[0050] The cholesterol liquid crystal display unit 3 includes a light incident surface I for receiving external light, wherein the cholesterol liquid crystal display unit 3 updates the display screen after receiving electric energy, and the required electric energy comes from the solar cell unit 5, and the solar cell unit 5 includes a light receiving surface E attached to the surface S of the cholesterol liquid crystal display unit 3 away from the light incident surface I, wherein the light receiving surface E converts part of the external light penetrating the cholesterol liquid crystal display unit 3 from the light incident surface I into electric energy. The control unit 7 further includes a management module 70 and an energy storage module 80, wherein the management module 70 is an environmental energy management chip for managing the electric energy passing therethrough, and the management module 70 is electrically coupled to the solar cell unit 5 and electrically coupled to the energy storage module 80, and the energy storage module 80 is a super capacitor having a charging cut-off voltage (Vovch).

[0051] Please refer to Figure 2 And with Figure 1 , Figure 2Schematic diagram of the control system of the cholesterol liquid crystal display device of the present invention. After the solar cell unit 5 in the control system 2 receives the light source and generates electric energy, it can provide electric energy to the environmental energy management module of the management module 70, and the environmental energy management module can store the electric energy in the super capacitor of the energy storage module 80. When the screen of the cholesterol liquid crystal display unit 3 needs to be updated and the potential difference of the super capacitor reaches a charging cut-off voltage, the super capacitor can release the stored electric energy and provide the cholesterol liquid crystal display unit 3 to update the display screen.

[0052] The control unit 7 further includes a main control module 74 and a timing control module 76. The main control module 74 further includes a processing module 742 and a first power management module 744, and the processing module 742 is electrically coupled to the first power management module 744. The first end of the environmental energy management module is electrically coupled to the solar cell unit 5, the second end of the environmental energy management module is electrically coupled to the super capacitor, the third end of the environmental energy management module is electrically coupled to the first power management module 744 of the main control module 74, and the super capacitor is also electrically coupled to the first power management module 744 of the main control module 74. The main control module 74 is electrically coupled to the timing control module 76, and the timing control module 76 is electrically coupled to the cholesterol liquid crystal display unit 3. When the screen of the cholesterol liquid crystal display unit 3 needs to be updated and the potential difference of the super capacitor reaches the charging cut-off voltage, the environmental energy management module will transmit a power supply signal to the first power management module 744 of the main control module 74, and the super capacitor will release the stored electrical energy to the first power management module 744 of the main control module 74. Then, the main control module 74 can continue to supply electrical energy to the timing control module 76, and the timing control module 76 will continue to provide electrical energy to the cholesterol liquid crystal display unit 3 to update the display screen.

[0053] Next, the timing control module 76 further includes a timing controller 762 , a DC-to-DC converter 764 , and a second power management module 766 , and the timing controller 762 is electrically coupled to the second power management module 766 , and the DC-to-DC converter 764 is also electrically coupled to the second power management module 766 . When it is necessary to update the screen of the cholesterol liquid crystal display unit 3 and the potential difference of the super capacitor reaches the charging cut-off voltage, the environmental energy management module will transmit the power supply signal to the first power management module 744, and the super capacitor will release the stored electrical energy to the first power management module 744, and the processing module 742 will continue to supply display content and can send low-voltage differential signal (Low-Voltage Differential Signaling, referred to as LVDS) and serial peripheral interface (Serial Peripheral Interface, referred to as SPI) signals respectively or only send serial peripheral interface (SPI) signals to the timing controller 762. The first power management module 744 continues to supply electrical energy to the second power management module 766 through the DC-to-DC converter 764, and the timing controller 762 continues to provide the cholesterol liquid crystal display unit 3 with the electrical energy required to update the screen display content, and at the same time, the second power management module 766 provides the cholesterol liquid crystal display unit 3 with the electrical energy required to update the screen display content.

[0054] Among them, the charging cut-off voltage can be set to a range of 4 volts to 4.1 volts. When the potential difference of the supercapacitor reaches a range of 4 volts to 4.1 volts, the environmental energy management module can transmit the power supply signal to the main control module 74. At the same time, the supercapacitor can release the stored electrical energy to the main control module 74. The main control module 74 continues to supply electrical energy to the timing control module 76, and the timing control module 76 continues to provide electrical energy to the cholesterol liquid crystal display unit 3 to update the display screen.

[0055] Taking a 7.9-inch Silicon Based self-powered display as an example, under an illumination of 6000-7000 lux, a super capacitor with a capacity of 4F can be charged from 3.6V to 4.1V in about 5 minutes, and the time for updating the screen is about 6-7 seconds. During the screen update, the voltage of the super capacitor is discharged from 4.1V to 3.6V. After the screen update is completed, the main control module 74 cuts off the power supply of the timing control module 76, and the main control module 74 enters the sleep / standby state.

[0056] Please refer to Figure 3, is a schematic diagram of the cholesterol liquid crystal display device of the present invention receiving wireless communication. In a preferred embodiment, the cholesterol liquid crystal display device 1 includes a cholesterol liquid crystal display unit 3, a solar cell unit 5, and a control unit 7. The control unit 7 further includes a management module 70 and an energy storage module 80. The management module 70 is an environmental energy management chip for managing the passing electric energy, and is electrically coupled to the solar cell unit 5 and electrically coupled to the energy storage module 80. The energy storage module 80 has a super capacitor with a charging cut-off voltage.

[0057] The control unit 7 further includes a main control module 74 and a timing control module 76, and the main control module 74 further includes a built-in or external data temporary storage area 75, a processing module 742, and a first power management module 744, and the timing control module 76 further includes the timing controller 762, the DC-DC converter 764, and the second power management module 766. The data temporary storage area 75 receives at least one screen data from an electronic device 9 in a wireless or wired manner, so as to be transmitted to the timing controller 762 via the electrically connected processing module 742 and displayed on the cholesterol liquid crystal display unit 3, and the processing module 742 is electrically coupled to the first power management module 744, the timing controller 762 is electrically coupled to the second power management module 766, and the DC-DC converter 764 is also electrically coupled to the second power management module 766.

[0058] When the electronic device 9 has a wireless communication function, such as a smart phone, a tablet computer, etc., the default screen data to be updated can be transmitted to the data temporary storage area 75 of the main control module 74, wherein the data temporary storage area 75 can be the internal memory of the main control module 74 or the external memory of the main control module 74. After the electronic device 9 transmits the screen data to the data temporary storage area 75, if the screen of the cholesterol liquid crystal display unit 3 needs to be updated, and the potential difference of the energy storage module 80 reaches the charging cut-off voltage, the management module 70 will transmit the power supply signal to the first power management module 744, and the energy storage module 80 will release the stored power to the first power management module 744, and the processing module 742 will continue to supply display content and can send low voltage differential signal (LVDS) and serial peripheral interface (SPI) signal respectively or only send serial peripheral interface (SPI) signal to the timing controller 762, the first power management module 744 continues to supply electric energy to the second power management module 766 through the DC-to-DC converter 764, and the timing controller 762 continues to provide the cholesterol liquid crystal display unit 3 with the electric energy required to update the screen display content. At the same time, the second power management module 766 provides the cholesterol liquid crystal display unit 3 with the electric energy required to update the screen display content, that is, the main control module 74 receives the power supply signal of the management module 70, and the first power management module 744 of the main control module 74 will output electric energy to the timing control module 76. When the timing control module 76 completes updating the screen content, the control unit 7 will enter standby or sleep mode.

[0059] Please refer to Figure 4 , is a flow chart of a control method of a cholesterol liquid crystal display device of the present invention, which is used to manage the power supply of the cholesterol liquid crystal display device 1. The cholesterol liquid crystal display device 1 is as described in the previous embodiment, and the control method further comprises the following steps:

[0060] Step S01 : inputting the electric energy generated by the solar cell unit 5 after receiving a part of the external light penetrating the cholesterol liquid crystal display unit 3 into the management module 70 .

[0061] Step S02 : storing the electric energy in the energy storage module 80 through the management module 70 .

[0062] Step S03: When the screen of the cholesterol liquid crystal display unit 3 needs to be updated and the potential difference of the energy storage module 80 reaches the charging cut-off voltage, the energy storage module 80 releases the stored electric energy.

[0063] Step S04: the electric energy released by the energy storage module 80 is used to update the screen of the cholesterol liquid crystal display unit 3 .

[0064] Among them, when the screen of the cholesterol liquid crystal display unit 3 needs to be updated and the potential difference of the energy storage module 80 reaches the charging cut-off voltage, the management module 70 transmits the power supply signal to the main control module 74, and the energy storage module 80 releases the stored electric energy to the main control module 74. The main control module 74 continues to supply electric energy to the timing control module 76, and the timing control module 76 continues to provide the cholesterol liquid crystal display unit 3 with the required electric energy to update the screen.

[0065] In summary, by utilizing the cholesterol liquid crystal display device and its control system provided by the present invention, when the cholesterol liquid crystal display device 1 does not need to update the screen, the management module 70 only needs to store the electric energy in the energy storage module 80 after receiving the electric energy provided by the solar cell unit 5. When the screen needs to be updated, the energy storage module 80 can release the stored electric energy to provide the cholesterol liquid crystal display unit 3 with the electric energy required to update the screen, thereby forming a self-sufficient display power supply system.

[0066] In addition, those skilled in the art should understand that, although there are many problems in the prior art, each embodiment or technical solution of the present invention can be improved in only one or several aspects, without having to solve all the technical problems listed in the prior art or background technology at the same time. Those skilled in the art should understand that the content not mentioned in a claim should not be used as a limitation on the claim.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A cholesteric liquid crystal display device, characterized in that: The cholesteric liquid crystal display device at least comprises: A cholesterol liquid crystal display unit includes a light incident surface for receiving external light; A solar cell unit includes a light-collecting surface attached to the surface of the cholesterol liquid crystal display unit away from the light-incident surface, wherein the light-collecting surface converts part of the external light penetrating the cholesterol liquid crystal display unit into electrical energy; as well as A control unit includes a management module electrically connected to the solar cell unit, and an energy storage unit electrically connected to the management module and the cholesterol liquid crystal display unit respectively, wherein the electric energy converted by the solar cell unit is stored in the energy storage unit via the management module to be provided to the cholesterol liquid crystal display unit for use.

2. The cholesteric liquid crystal display device according to claim 1, characterized in that: The energy storage unit is one of an energy storage module and a capacitor, and the energy storage unit has a charging cut-off voltage.

3. The cholesteric liquid crystal display device according to claim 2, characterized in that: The control unit further includes a main control unit and a timing controller. The main control unit is electrically connected to the management module and the energy storage unit respectively, and the timing controller is electrically connected to the main control unit and the cholesterol liquid crystal display unit respectively.

4. The cholesteric liquid crystal display device according to claim 3, characterized in that: When the cholesterol liquid crystal display unit needs to update the screen and the electric energy stored in the energy storage unit reaches the charging cut-off voltage, the management module transmits a power supply signal to start the main control unit, and the energy storage unit transmits the stored electric energy to the main control unit. The main control unit then continues to transmit the electric energy to the timing controller to provide it to the cholesterol liquid crystal display unit for use.

5. The cholesteric liquid crystal display device according to claim 3, characterized in that: The main control unit further includes a processing module and a first power management module electrically connected to the processing module.

6. The cholesteric liquid crystal display device according to claim 3, characterized in that: The timing controller further includes a timing controller, a DC-DC converter electrically connected to the main control unit, and a second power management module electrically connected to the timing controller and the DC-DC converter respectively.

7. The cholesteric liquid crystal display device according to claim 5 or 6, characterized in that: When the cholesterol liquid crystal display unit needs to update the screen and the energy storage unit receives the electric energy from the solar cell unit to reach the charging cut-off voltage, the management module transmits a power supply signal to start the first power management module, the energy storage unit transmits the stored electric energy to the first power management module, and then transmits it to the second power management module via the DC-DC converter, and then provides it to the cholesterol liquid crystal display unit for use, and the processing module transmits the screen content to be updated to the timing controller, and then provides it to the cholesterol liquid crystal display unit for display.

8. The cholesteric liquid crystal display device according to claim 3, characterized in that: The main control unit further includes a built-in or external data temporary storage area, and the data temporary storage area receives at least one picture data in a wireless or wired manner to transmit it to the timing controller and display it on the cholesterol liquid crystal display unit.

9. A control system for a cholesterol liquid crystal display device, characterized in that: The control system is used to control the power supply of a cholesterol liquid crystal display device, the cholesterol liquid crystal display device includes a cholesterol liquid crystal display unit, and a solar cell unit attached to the surface of the cholesterol liquid crystal display unit away from a light incident surface, and the control system of the cholesterol liquid crystal display device at least includes: a management module electrically connected to the solar cell unit, the management module receiving the electric energy provided by the solar cell unit; an energy storage module, which is electrically connected to the management module, and receives and stores electric energy from the management module, wherein the energy storage module has a charging cut-off voltage; a main control unit, electrically connected to the management module and the energy storage module; and a timing controller electrically connected to the main control unit and the cholesterol liquid crystal display unit; Among them, when the cholesterol liquid crystal display unit needs to update the screen and the electric energy stored in the energy storage module reaches the charging cut-off voltage, the management module transmits a power supply signal to start the main control unit, and the energy storage module transmits the stored electric energy to the main control unit, and the main control unit then transmits the electric energy to the timing controller to provide it to the cholesterol liquid crystal display unit for updating the screen.

10. The control system of the cholesteric liquid crystal display device according to claim 9, characterized in that: The charging cut-off voltage of the energy storage module is between 4V and 4.1V.

11. The control system of the cholesteric liquid crystal display device according to claim 9, characterized in that: The main control unit includes a processing module and a first power management module electrically connected to the processing module.

12. The control system of the cholesteric liquid crystal display device according to claim 9, characterized in that: The timing controller includes a timing controller, a DC-DC converter electrically connected to the main control unit, and a second power management module electrically connected to the timing controller and the DC-DC converter respectively.

13. The control system of the cholesteric liquid crystal display device according to claim 11 or 12, characterized in that: When the cholesterol liquid crystal display unit needs to update the screen and the electric energy stored in the energy storage module reaches the charging cut-off voltage, the management module transmits a power supply signal to start the first power management module, the energy storage module transmits the stored electric energy to the first power management module, and then transmits it to the second power management module via the DC-DC converter, and then provides it to the cholesterol liquid crystal display unit for use, and the processing module transmits the screen content to be updated to the timing controller, and then provides it to the cholesterol liquid crystal display unit for display.

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