CN112908278A

CN112908278A - Control device, electronic system and electronic equipment

Info

Publication number: CN112908278A
Application number: CN202110249676.4A
Authority: CN
Inventors: 占文喜; 杨冬笋
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-03-08
Filing date: 2021-03-08
Publication date: 2021-06-04
Anticipated expiration: 2041-03-08
Also published as: CN112908278B

Abstract

The application provides a control device, an electronic system and electronic equipment, and relates to the technical field of electronic equipment with a color change function. An operational amplifier circuit in the control device is used for outputting control voltage to the electrochromic device, the electrochromic device changes color under the control voltage, a first operational amplifier sub-circuit in the operational amplifier circuit is a differential amplifier circuit, one input end of the first operational amplifier sub-circuit is used for being electrically connected with a power supply, an output end of the first operational amplifier sub-circuit is used for being electrically connected with one input end of the electrochromic device, and the other input end of the electrochromic device is electrically connected with the operational amplifier circuit to form a closed loop; the output end of the control module is electrically connected with the other input end of the first operational amplifier sub-circuit and is used for controlling the control voltage. The application realizes that the control module controls the first operational amplifier sub-circuit to output the control voltage capable of controlling the electrochromic device, can realize the bridging of low-voltage control and high-voltage drive, and can realize the adjustment of the operational amplifier voltage and the adjustment of the change rate of the electrochromic device.

Description

Control device, electronic system and electronic equipment

Technical Field

The present disclosure relates to electronic devices with color changing functions, and particularly to a control device, an electronic system, and an electronic device.

Background

The existing drive circuit of an electrochromic device made of Polymer Dispersed Liquid Crystal (PDLC) is designed by utilizing a metal-oxide semiconductor field effect transistor H bridge, but the drive circuit cannot control the change rate of the electrochromic device.

Disclosure of Invention

An aspect of an embodiment of the present application provides a control apparatus, including:

an operational amplifier circuit for electrically connecting with an electrochromic device and outputting a control voltage to the electrochromic device, the electrochromic device being configured to change color at the control voltage, the operational amplifier circuit comprising:

the first operational amplifier sub-circuit is a differential amplifier circuit, one input end of the first operational amplifier sub-circuit is used for being electrically connected with a power supply, the output end of the first operational amplifier sub-circuit is used for being electrically connected with one input end of the electrochromic device, and the other input end of the electrochromic device is configured to be electrically connected with the operational amplifier circuit to form a closed loop; and

and the output end of the control module is electrically connected with the other input end of the first operational amplifier sub-circuit and is used for controlling the control voltage.

An embodiment of the present application further provides a control device, including:

the first operational amplifier sub-circuit is an inverse proportion amplifier circuit, and the output end of the first operational amplifier sub-circuit is used for being electrically connected with one input end of the electrochromic device; and

the second operational amplifier sub-circuit is an in-phase proportional amplifier circuit, and the output end of the second operational amplifier sub-circuit is used for being electrically connected with the other input end of the electrochromic device; and

and the output end of the control module is respectively and electrically connected with one input end of the first operational amplifier sub-circuit and one input end of the second operational amplifier sub-circuit, and the other input end of the first operational amplifier sub-circuit and the other input end of the second operational amplifier sub-circuit are grounded.

The embodiment of the present application further provides an electronic system, which includes an electrochromic device and the above-mentioned control device, wherein the operational amplifier circuit is electrically connected to the electrochromic device and outputs a control voltage to the electrochromic device, and the electrochromic device is configured to change color under the control voltage.

The embodiment of the application also provides an electronic device, which comprises a middle frame, a transparent cover plate and the electronic system, wherein the transparent cover plate is fixedly connected with the middle frame and forms an accommodating space, and the electrochromic device is arranged in the accommodating space and stacked with the transparent cover plate.

The electrochromic device is subjected to color change control by the operational amplifier circuit, the control module can be electrically connected with one input end of the first operational amplifier sub-circuit, and when the power supply is electrically connected with the other input end of the first operational amplifier sub-circuit, the control module can control the first operational amplifier sub-circuit to output control voltage capable of controlling the electrochromic device, low-voltage control and high-voltage driving bridging can be realized, and the electrochromic device can be regulated in change rate by regulating the operational amplifier voltage.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic diagram of an electronic system according to an embodiment of the present application;

FIG. 2 discloses a top view of the electrochromic device in the embodiment of FIG. 1 of the present application;

FIG. 3 discloses a schematic III-III cross-sectional view of an electrochromic device according to the embodiment of FIG. 2 of the present application;

FIG. 4 is a graph showing the voltage-haze (haze) curve of an electrochromic device made from a polymer dispersed liquid crystal according to an embodiment of the present disclosure;

FIG. 5 is a schematic circuit diagram of the boost converter circuit of the embodiment of FIG. 1;

FIG. 6 is a schematic circuit diagram of an operational amplifier circuit according to the embodiment of FIG. 1;

FIG. 7 is a schematic circuit diagram of an operational amplifier circuit according to another embodiment of the present application shown in FIG. 1;

FIG. 8 is a schematic circuit diagram of an operational amplifier circuit according to another embodiment of the present application shown in FIG. 1;

FIG. 9 is a waveform diagram of an input terminal, an output terminal and a control terminal of an operational amplifier circuit according to an embodiment of the present disclosure;

FIG. 10 is a schematic diagram of an operational amplifier circuit according to another embodiment of the present application, as shown in FIG. 6;

FIG. 11 is a schematic circuit diagram of an operational amplifier circuit according to another embodiment of the present application shown in FIG. 7;

FIG. 12 is a schematic circuit diagram of an operational amplifier circuit according to another embodiment of the present application shown in FIG. 8;

FIG. 13 is a schematic circuit diagram of an operational amplifier circuit according to another embodiment of the present application shown in FIG. 11;

FIG. 14 is a block diagram illustrating an exemplary embodiment of an electronic device;

FIG. 15 is a block diagram illustrating the structure of an electronic device in accordance with another embodiment of the present application;

FIG. 16 is a schematic diagram of an electronic device according to an embodiment of the present application;

fig. 17 and fig. 18 respectively disclose schematic diagrams of an operation state of an electronic device according to an embodiment of the present application.

Detailed Description

The present application will be described in further detail with reference to the accompanying drawings and embodiments. In particular, the following embodiments are merely illustrative of the present application, and do not limit the scope of the present application. Likewise, the following embodiments are only some embodiments of the present application, not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present application.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

As used herein, "electronic equipment" (which may also be referred to as a "terminal" or "mobile terminal" or "electronic device") includes, but is not limited to, devices that are configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal".

Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module.

Please refer to fig. 1, which discloses a schematic structural diagram of an electronic system according to an embodiment of the present application. The electronic system 100 may include a power supply 200, a control device 300 electrically connected to the power supply 200 and outputting a control voltage, and an electrochromic device 400 electrically connected to the control device 300 and capable of implementing color change (coloring or discoloring) at the control voltage. The power supply 200 can output a direct current, which can be used to realize the normal operation of the whole electronic system 100. The electronic system 100 may implement the color change of the electrochromic device 400 through the control apparatus 300.

Generally, Electrochromic (EC) refers to a phenomenon in which optical properties (e.g., reflectance, transmittance, and absorption) of a material undergo a stable and reversible color change under the action of an applied electric field, and the material exhibits a reversible change in color and transparency in appearance. In this regard, the electrochromic device 400 may be a device made of electrochromic materials that are capable of undergoing a stable, reversible change in color and/or transparency under the influence of an applied electric field, which change enables the appearance decorative effect of the electrochromic device 400 to be changed.

Referring to fig. 2 and 3 together, fig. 2 discloses a top view of the electrochromic device 400 in the embodiment of fig. 1 of the present application, and fig. 3 discloses a schematic iii-iii cross-sectional view of the electrochromic device 400 in the embodiment of fig. 2 of the present application. The electrochromic device 400 may include a first electrode layer 401, a color-changing material layer 402, and a second electrode layer 403, which are sequentially stacked. A chamber is formed between the first electrode layer 401 and the second electrode layer 403 for accommodating the color-changing material to form the color-changing material layer 402. The first electrode layer 401 and the second electrode layer 403 may be directly connected to the control device 300 such that an electric field is formed between the first electrode layer 401 and the second electrode layer 403 under a control voltage output by the control device 300, so that the electrochromic material layer 12 realizes color change in response to a change in the electric field.

It is to be noted that the terms "first", "second", etc. are used herein and hereinafter for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features.

It is to be understood that the names "first electrode layer", "second electrode layer", and "electrode layer" may be interchanged in some embodiments. For example, in one embodiment, the "first electrode layer" in other embodiments is referred to as a "second electrode layer", and accordingly, the "second electrode layer" in other embodiments is referred to as a "first electrode layer".

It is understood that, in some embodiments, the electrochromic device 400 may further be provided with an encapsulation structure to encapsulate edges of the first electrode layer 401, the color-changing material layer 402, and/or the second electrode layer 403, so that the electrochromic device 400 is an integral body to improve the appearance of the electrochromic device 400. The detailed technical features of this part of the package structure are within the understanding of those skilled in the art and will not be described in detail here.

Electrode layers such as the first electrode layer 401 and the second electrode layer 403 may each include a substrate 404 and a conductive layer 405 which are stacked. The substrate 404 may be adhered to the conductive layer 405 for supporting the conductive layer 405.

Specifically, the substrate 404 may be made of glass or a transparent resin material with a certain hardness, such as PET (Polyethylene Terephthalate is abbreviated as PET or PEIT, commonly called as polyester resin, and a polycondensate of terephthalic acid and ethylene glycol), PMMA (poly (methyl methacrylate), also called as acryl, Acrylic or plexiglass), polycarbonate PC, Polyimide PI, cyclic olefin copolymer, Polypropylene (Polypropylene, abbreviated as PP), transparent Colorless Polyimide (CPI), and the like. Further material types for the substrate 404 are not listed and detailed herein to the extent that they are understood by those skilled in the art.

A conductive layer 405 may be on the substrate 404. The conductive layer 405 is adhesively secured to the substrate 404. The conductive layer 405 may be made of a transparent conductive material. The transparent conductive material may be Indium Tin Oxide (ITO), zinc aluminum oxide (AZO), or a graphene thin film, etc.

In one embodiment, the conductive layer 405 can be formed by coating on the substrate 404.

In one embodiment, a side of the conductive layer 405 away from the substrate 404 may be provided with circuit traces to connect the electrode layers with the control device 300, so as to form an electric field between the two electrode layers under the control voltage output by the control device 300. The discoloring material layer 402 is further driven to discolor the discoloring material layer 402.

The routing range of the circuit traces is the largest as possible according to the surrounding of the color-changing material layer 402. The material impedance of the circuit traces may be selected to be within 5 ohms, although the smaller the better. The circuit wiring can be formed by arranging a metal film and then etching, or a local metal plating mode is adopted, namely, a metal plating layer is made at the position where wiring is needed. The material used for the circuit wiring can be metal material with good electric conductivity, such as molybdenum, aluminum, silver, gold, copper, and the like. In an embodiment, the circuit trace can be formed on the conductive layer 405 by screen printing to form a metal wire with a very low resistance, for example, 1.6 × 10^-6Omega cm or so. In one embodiment, the circuit traces may be silver paste traces formed at edge positions of the conductive layer 405 by silver paste trace equipment. The circuit traces may also be referred to as silver paste traces. The silver paste routing is preferably nano silver paste so as to manufacture a colorless transparent electrode. In one embodiment, the conductive layer 405 can be directly omitted, and the circuit traces can be directly disposed on the substrate 404, and can be directly formed on the substrate 404 by the above-mentioned method.

In one embodiment, the substrate 404 may be replaced with a process protection layer, which may be disposed directly on the conductive layer 405. The process protection layer may be formed by physical vapor deposition in one or more layers, and may be colorless and transparent as a whole.

Referring to fig. 3, the conductive layer 405 in the first electrode layer 401 and the conductive layer 405 in the second electrode layer 403 are both disposed toward the color-changing material layer 402, so that one conductive layer 405 is disposed on both sides of the color-changing material layer 402, and the conductive layers 405 on both sides of the color-changing material layer 402 are respectively adhered and fixed to the color-changing material layer 402.

In one embodiment, the conductive layers 405 on both sides of the color-changing material layer 402 may be directly coated on the color-changing material layer 402 and cured.

Referring to fig. 3, the color-changing material layer 402 may be made of Polymer Dispersed Liquid Crystal (PDLC) Dispersed in micron-sized droplets in an organic solid Polymer matrix. Wherein, when no electric field is applied, the liquid crystal is in free orientation, the refractive index of the liquid crystal is not matched with that of the matrix, and when light passes through the matrix, the light is intensively scattered by the liquid crystal to be in an opaque milky white state or a semitransparent state (so that the device has certain haze (fuzzy rate)). The application of an electric field can adjust the optical axis orientation of the liquid crystal, and when the refractive PDLC ratio of the liquid crystal matches the refractive index of the matrix, light passes through the matrix without being scattered by the liquid crystal and assumes a transparent state. Of course, when the electric field is removed, the liquid crystal returns to the original free alignment state.

Referring to fig. 4, a voltage-haze (haze) graph of an electrochromic device 400 made based on polymer dispersed liquid crystal in one embodiment of the present application is disclosed. Wherein, when the control voltage is not applied to the electrochromic device 400, the blur ratio is higher, and the blur ratio gradually decreases with the increase of the control voltage. In the figure, the blur ratio of the electrochromic device 400 is reduced and the transmittance is increased when the control voltage is about 25V ± 2.5V. The user can select different control voltages to control the blur ratio of the electrochromic device 400 according to fig. 4, thereby realizing different appearance expressive forces.

Referring to fig. 1 again, the control device 300 may include a boost converter circuit 10 having an input end electrically connected to the output end of the power supply 200, an operational amplifier circuit 20 having an input end electrically connected to the output end of the boost converter circuit 10, and a control module 30 having an output end electrically connected to the control end of the boost converter circuit 10 and the input end of the operational amplifier circuit 20, respectively. The control module 30 can control the boost converter circuit 10 and the operational amplifier circuit 20 to change the control voltage output by the output terminal of the operational amplifier circuit 20, so as to control the color change of the electrochromic device 400. It will be appreciated that in some embodiments, the power supply 200 may be included as part of the control device 300.

Specifically, please refer to fig. 5, which discloses a schematic circuit diagram of the boost converter circuit 10 according to the embodiment of fig. 1. The input end VBAT0 of the boost converter circuit 10 is used to be electrically connected to the output end of the power supply 200, and the output end VREG _ OUT is used to be electrically connected to the input end of the operational amplifier circuit 20, so as to perform high voltage conversion and output on the low voltage output by the power supply 200, and realize high voltage driving for color change of the electrochromic device 400.

The boost converter circuit 10 may include a dc boost converter U1. An input terminal VIN of the dc boost converter U1 is electrically connected to an output terminal of the power supply 200 as an input terminal VBAT0 of the boost converter circuit 10. The output terminal VOUT of the dc boost converter U1 is electrically connected to the input terminal of the operational amplifier circuit 20 as the output terminal VREG _ OUT of the boost converter circuit 10.

Specifically, the first capacitor C1 is electrically connected between the input terminal VIN of the dc boost converter U1 and the common ground GND.

An inductor L01 is electrically connected between the input terminal VIN and the switch control terminal SW of the dc boost converter U1.

The first resistor R1 is electrically connected between the input terminal VIN and the enable terminal EN of the dc boost converter U1.

The enable terminal EN of the dc boost converter U1 is electrically connected to one end of the second resistor R2, and the other end of the second resistor R2 is grounded.

The output terminal VOUT of the dc boost converter U1 is electrically connected to the output voltage feedback terminal FB via a third resistor R3.

An output terminal VOUT of the dc boost converter U1 is electrically connected to one end of the second capacitor C2, and the other end of the second capacitor C2 is grounded.

The voltage feedback terminal FB of the dc boost converter U1 is electrically connected to one end of the fourth resistor R4, and the other end of the fourth resistor R4 is grounded.

In one embodiment, the boost converter circuit 10 may be omitted.

In one embodiment, to regulate the output voltage VOUT of the output terminal VOUT of the dc boost converter U1, the voltage feedback terminal FB of the dc boost converter U1 may also be electrically connected to the output voltage feedback regulation module 11. The control terminal of the output voltage feedback regulation module 11 serves as a control terminal of the dc boost converter U1, and is electrically connected to the output terminal of the control module 30, so as to regulate the voltage of the output voltage feedback terminal FB of the dc boost converter U1 under the control of the first control signal of the control module 30, and further control the output voltage VOUT of the output terminal VOUT of the dc boost converter U1.

Referring to fig. 5, the output voltage feedback regulation module 11 may include a first output voltage feedback regulation submodule 111 and a second output voltage feedback regulation submodule 112.

It is understood that the names "first output voltage feedback regulation submodule", "second output voltage feedback regulation submodule", and "output voltage feedback regulation submodule" may be mutually converted in some embodiments. For example, in one embodiment, the "first output voltage feedback regulation sub-module" in other embodiments is referred to as a "second output voltage feedback regulation sub-module", and correspondingly, the "second output voltage feedback regulation sub-module" in other embodiments is referred to as a "first output voltage feedback regulation sub-module".

Specifically, the first output voltage feedback regulator sub-module 111 may include a fifth resistor R5 having one end electrically connected to the output voltage feedback terminal FB, a first MOS transistor (Metal Oxide Semiconductor field effect transistor, Metal-insulator-Semiconductor) V1 having a drain D electrically connected to the other end of the fifth resistor R5 and a source S grounded, and a first bi-directional transient voltage suppression diode TVS1 having one end electrically connected to the gate G of the first MOS transistor V1 and the other end electrically connected to the source S of the first MOS transistor V1. The source S of the first MOS transistor V1 is grounded. The gate G of the first MOS transistor V1 may receive a first control signal, such as the first control sub-signal INA, of the control module 30, such that the fifth resistor R5 is connected in parallel with the fourth resistor R4, and the voltage at the output voltage feedback terminal FB of the dc boost converter U1 is adjusted, so as to adjust the voltage output by the output terminal VREG _ OUT of the dc boost converter U1.

The second output voltage feedback regulator sub-module 112 may include a sixth resistor R6 having one end electrically connected to the output voltage feedback terminal FB, a second MOS transistor (Metal Oxide Semiconductor field effect transistor, Metal-insulator Semiconductor) V2 having a drain D electrically connected to the other end of the fifth resistor R5 and a source S grounded, and a second bi-directional transient voltage suppression diode TVS2 having one end electrically connected to the gate G of the second MOS transistor V2 and the other end electrically connected to the source S of the second MOS transistor V2. The source S of the second MOS transistor V2 is grounded. The gate G of the second MOS transistor V2 may receive the first control signal, such as the second control sub-signal INB, of the control module 30, such that the sixth resistor R6 is connected in parallel with the fourth resistor R4, and the voltage at the output voltage feedback terminal FB of the dc boost converter U1 is adjusted, so as to adjust the voltage output by the output terminal VREG _ OUT of the dc boost converter U1.

It is understood that the names of "first MOS transistor", "second MOS transistor", and "MOS transistor" may be interchanged in some embodiments. For example, in one embodiment, the "first MOS transistor" in other embodiments is referred to as a "second MOS transistor", and correspondingly, the "second MOS transistor" in other embodiments is referred to as a "first MOS transistor".

It is to be understood that the designations "first bi-directional transient voltage suppression diode", "second bi-directional transient voltage suppression diode", and "bi-directional transient voltage suppression diode" may be interchanged in some embodiments. For example, in one embodiment, the "first bi-directional transient voltage suppressor diode" in other embodiments is referred to as "second bi-directional transient voltage suppressor diode", and correspondingly, the "second bi-directional transient voltage suppressor diode" in other embodiments is referred to as "first bi-directional transient voltage suppressor diode".

It can be understood that, through the control of the control module 30, the fifth resistor R5 and/or R6 can be connected to the fourth resistor R4 to regulate the voltage at the output voltage feedback terminal FB of the dc boost converter U1, so as to adjust the voltage output from the output terminal VREG _ OUT of the dc boost converter U1. The output terminal VREG _ OUT of the dc boost converter U1 may be made to output up to four different voltages. And further realize the color change control of different degrees to the electrochromic device.

In an embodiment, one or both of the first output voltage feedback regulation sub-module 111 and the second output voltage feedback regulation sub-module 112 may be omitted. In one embodiment, the output voltage feedback regulation module 11 may be omitted, and the fourth resistor R4 is replaced by a variable resistor, so that the adjustment of the variable resistor adjusts the voltage at the output voltage feedback terminal FB of the dc boost converter U1, and thus adjusts the voltage output by the output terminal VREG _ OUT of the dc boost converter U1.

In one embodiment, the dc boost converter U1 may be the boost converter TPS61046, the boost converter TPS65130, or other types of boost converters. The examples are given by way of illustration only and are not intended to be limiting.

The operational amplifier circuit 20 may be configured to amplify and shape the voltage outputted by the output terminal VREG _ OUT of the dc boost converter U1, so as to implement the color change control on the electrochromic device 400. Referring to fig. 6, a schematic diagram of an operational amplifier circuit 20 according to the embodiment of fig. 1 of the present application is disclosed. The operational amplification circuit 20 may include a first operational amplification sub-circuit 21. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as the input terminal of the operational amplifier circuit 20. An input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to an output terminal of the control module 30. The output terminal Vout1 of the first operational amplifier sub-circuit 21 is electrically connected to one input terminal of the electrochromic device 400, and the other input terminal of the electrochromic device 400 is grounded, so that the electrochromic device 400 is electrically connected to the operational amplifier circuit 20 to form a closed loop.

Specifically, the first operational amplifier sub-circuit 21 may include a first operational amplifier U2. The inverting input terminal of the first operational amplifier U2 is electrically connected to one end of the seventh resistor R7. The other end of the seventh resistor R7 is electrically connected to one end of the third capacitor C3. The other end of the third capacitor C3 may be electrically connected to the output end of the control module 30 as the input end of the first operational amplifier sub-circuit 21. Such that the inverting input of the first operational amplifier U2 is adapted to receive a second control signal, e.g., the third control sub-signal VG1, of the control module 30 to control the voltage output of the first operational amplifier sub-circuit 21.

The inverting input terminal of the first operational amplifier U2 may be electrically connected to one end of the eighth resistor R8 and one end of the fourth capacitor C4. The other end of the eighth resistor R8 and the other end of the fourth capacitor C4 may both be electrically connected to the output terminal Vout1 of the first operational amplifier sub-circuit 21.

The non-inverting input terminal of the first operational amplifier U2 may be electrically connected to one end of the ninth resistor R9 and one end of the tenth resistor R10, respectively. The other end of the ninth resistor R9 is connected to ground. The other end of the tenth resistor R10 may be electrically connected to the output terminal VREG _ OUT of the voltage boost converter circuit 10 as an input terminal of the first operational amplifier sub-circuit 21.

The first power supply terminal of the first operational amplifier U2 may be electrically connected to the output terminal VREG _ OUT of the boost converter circuit 10. The second power supply terminal may be grounded.

In one embodiment, the first operational amplifier U2 may be an operational amplifier OFA 170. Of course other types of operational amplifiers are possible.

In an embodiment, referring to fig. 6, the first operational amplifier sub-circuit 21 is a differential amplifier circuit.

In an embodiment, referring to fig. 7, fig. 7 discloses a circuit schematic diagram of another embodiment of the operational amplifier circuit 20 shown in fig. 1. The operational amplifier circuit 20 may include the first operational amplifier sub-circuit 21 and the second operational amplifier sub-circuit 22 in the above embodiments. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as the input terminal of the operational amplifier circuit 20. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal of the control module 30. The output terminal Vout1 of the first operational amplifier sub-circuit 21 is electrically connected to one input terminal of the electrochromic device 400. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as another input terminal of the operational amplifier circuit 20. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to another output terminal of the control module 30. The output terminal Vout1 of the second operational amplifier sub-circuit 22 is electrically connected to another input terminal of the electrochromic device 400.

It is to be understood that the names of the "first operational amplifier sub-circuit", the "second operational amplifier sub-circuit", and the "operational amplifier sub-circuit" may be mutually converted in some embodiments. For example, in one embodiment, "the first operational amplifier sub-circuit" in the other embodiments is referred to as "the second operational amplifier sub-circuit", and accordingly, "the second operational amplifier sub-circuit" in the other embodiments is referred to as "the first operational amplifier sub-circuit".

Specifically, the second operational amplifier sub-circuit 22 may include a second operational amplifier U3. An inverting input terminal of the second operational amplifier U3 is electrically connected to one end of the eleventh resistor R11. The other end of the eleventh resistor R11 is electrically connected to one end of the fifth capacitor C5. The other end of the fifth capacitor C5 may be electrically connected to another output end of the control module 30 as an input end of the second operational amplifier sub-circuit 22. Such that the inverting input of the second operational amplifier U3 is adapted to receive a second control signal, such as the fourth control sub-signal VG2, from the control module 30 to control the voltage output of the second operational amplifier sub-circuit 22.

It is understood that the names "first operational amplifier", "second operational amplifier", and "operational amplifier" may be interchanged in some embodiments. For example, in one embodiment, the "first operational amplifier" in the other embodiments is referred to as a "second operational amplifier", and accordingly, the "second operational amplifier" in the other embodiments is referred to as a "first operational amplifier".

An inverting input terminal of the second operational amplifier U3 may be electrically connected to one end of the twelfth resistor R12 and one end of the sixth capacitor C6. The other end of the twelfth resistor R12 and the other end of the sixth capacitor C6 may be electrically connected to the output terminal Vout2 of the second operational amplifier sub-circuit 22.

The non-inverting input terminal of the second operational amplifier U3 may be electrically connected to one end of the thirteenth resistor R13 and one end of the fourteenth resistor R14, respectively. The other end of the fourteenth resistor R14 is grounded. The other end of the thirteenth resistor R13 may be electrically connected to the output terminal VREG _ OUT of the voltage boost converter circuit 10 as an input terminal of the second operational amplifier sub-circuit 22.

The first power supply terminal of the second operational amplifier U3 may be electrically connected to the output terminal VREG _ OUT of the voltage boost converter circuit 10. The second power supply terminal may be grounded.

In one embodiment, the second operational amplifier U3 may be an operational amplifier OFA 170. Of course other types of operational amplifiers are possible.

In one embodiment, referring to fig. 7, the second operational amplifier sub-circuit 22 is a differential amplifier circuit.

Referring to fig. 8, fig. 8 is a schematic circuit diagram of another embodiment of the operational amplifier circuit 20 shown in fig. 1. The operational amplifier circuit 20 may include the first operational amplifier sub-circuit 21 in the above-described embodiment and the second operational amplifier sub-circuit 22 in the above-described embodiment. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as the input terminal of the operational amplifier circuit 20. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal of the control module 30. The output terminal Vout1 of the first operational amplifier sub-circuit 21 is electrically connected to one input terminal of the electrochromic device 400. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as another input terminal of the operational amplifier circuit 20. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to another output terminal of the control module 30. The output terminal Vout1 of the second operational amplifier sub-circuit 22 is electrically connected to another input terminal of the electrochromic device 400.

The thirteenth resistor R13 and the fourteenth resistor R14 in the second operational amplifier circuit 22 may be omitted, and the non-inverting input terminal of the second operational amplifier circuit U3 may be directly electrically connected to the non-inverting input terminal of the first operational amplifier circuit U2. It is to be understood that, in another embodiment, the thirteenth resistor R13 and the fourteenth resistor R14 may not be omitted, the ninth resistor R9 and the tenth resistor R10 may be omitted directly, and the non-inverting input terminal of the first operational amplifier circuit U2 may be electrically connected to the non-inverting input terminal of the second operational amplifier circuit U3 directly.

In one embodiment, the third capacitor C3 is 1 uF.

In one embodiment, the fourth capacitor C4 is 2 nF.

In one embodiment, the fifth capacitor C5 is 1 uF.

In one embodiment, the sixth capacitor C6 is 2 nF.

In one embodiment, the seventh resistor R7 is 1k Ω.

In one embodiment, the eighth resistor R8 is 1Mk Ω.

In one embodiment, the ninth resistor R9 is 1M Ω.

In one embodiment, the tenth resistor R10 is 1M Ω.

In one embodiment, the eleventh resistor R11 is 1k Ω.

In one embodiment, the twelfth resistor R12 is 1Mk Ω.

In one embodiment, the third capacitor C3 is 1uF, the fourth capacitor C4 is 2nF, the fifth capacitor C5 is 1uF, the sixth capacitor C6 is 2nF, the seventh resistor R7 is 1k Ω, the eighth resistor R8 is 1Mk Ω, the ninth resistor R9 is 1M Ω, the tenth resistor R10 is 1M Ω, the eleventh resistor R11 is 1k Ω, the twelfth resistor R12 is 1Mk Ω, and the voltage input at the VCC terminal is 30V. The inverting input terminal of the first operational amplifier U2 is configured to receive the second control signal of the control module 30, such as the third control sub-signal VG1, and the inverting input terminal of the second operational amplifier U3 is configured to receive the second control signal of the control module 30, such as the fourth control sub-signal VG2, wherein the third control sub-signal VG1 and the fourth control sub-signal VG2 may be low voltage levels, such as 1.2-5V, specifically 1.8V, or also 3V.

Fig. 9 is a waveform diagram of two input terminals, two output terminals and a control terminal of the operational amplifier circuit 20 according to an embodiment of the present disclosure. The third control sub-signal VG1 and the fourth control sub-signal VG2 are low voltage levels of 3V, and the voltage at the output terminal of the operational amplifier circuit 20 can be as high as 25V. The positive and negative applied control voltages of the electrochromic device 400 may be realized by the third and fourth control sub-signals VG1 and VG2, thereby discoloring the electrochromic device 400. Where VM1 is the voltage output by the boost converter circuit 10. The operational amplifier circuit 20 effectively bridges the low-voltage control (the third control sub-signal VG1 and the fourth control sub-signal VG2) and the high-voltage driving circuit (the boost converter circuit 10), ensuring the consistency of circuit performance. On the premise of not changing the circuit structure, the waveforms of different driving forms can be realized by adjusting the operational amplifier peripheral resistor and capacitor, so that different application scenes of the electrochromic device 400 are met. Further, the high voltage difference and the change speed of the rising and falling edges of the drive waveform may be adjusted by adjusting the resistance and the capacitance in the operational amplifier circuit 20.

In order to flexibly control the control voltage at the output terminal of the operational amplifier circuit 20, for example, the operational amplifier circuit 20 may output different control voltages. The feedback resistance of the operational amplifier in the operational amplification circuit 20, such as the first operational amplifier U2 and/or the second operational amplifier U3, may be adjusted. Referring to fig. 10, a schematic circuit diagram of another embodiment of the operational amplifier circuit 20 of the embodiment of fig. 6 of the present application is disclosed. The operational amplification circuit 20 may include the first operational amplification sub-circuit 21 in the above-described embodiments. The first feedback resistance adjusting module 211 is electrically connected between the inverting input terminal of the first operational amplifier U2 in the first operational amplifier circuit 21 and the output terminal Vout1, so that the first feedback resistance adjusting module 211 is electrically connected to the output terminal of the control module 30, so that the first feedback resistance adjusting module 211 receives a third control signal, for example, a fifth control sub-signal, output by the control module 30, and thus the feedback resistance of the first operational amplifier U2 is adjusted.

Specifically, the first feedback resistance adjustment module 211 may include a fifteenth resistor R15 and a first single pole, single position switch SW-SPST1 connected in series. The first single-pole single-position switch SW-SPST1 is controlled by a third control signal, for example, a fifth control sub-signal, output by the control module 30, and adjusts the feedback resistance of the first operational amplifier U2.

When the first single-pole single-position switch SW-SPST1 is closed, the fifteenth resistor R15 is connected in parallel with the eighth resistor R8, so that the feedback resistance of the first operational amplifier U2 is reduced, and the control voltage at the output terminal of the operational amplifier circuit 20 is changed.

In one embodiment, the feedback resistors of the first operational amplifier U2, i.e., the eighth resistor R8 and the fifteenth resistor 15, may be replaced by a variable resistor. The variable resistor is controlled by a third control signal, e.g., a fifth control sub-signal, output by the control module 30 to adjust the feedback resistance.

In an embodiment, referring to fig. 11, fig. 11 discloses a circuit schematic diagram of another embodiment of the operational amplifier circuit 20 shown in fig. 7. The operational amplifier circuit 20 may include a first operational amplifier sub-circuit 21 in the above-described embodiment and a second operational amplifier sub-circuit 22 in the above-described embodiment. The first feedback resistance adjusting module 211 in the above embodiment is electrically connected between the inverting input terminal of the first operational amplifier U2 in the first operational amplifier circuit 21 and the output terminal Vout 1. The second feedback resistance adjusting module 221 is electrically connected between the inverting input terminal of the second operational amplifier U3 in the second operational amplifier circuit 22 and the output terminal Vout1, so that the second feedback resistance adjusting module 221 is electrically connected to the output terminal of the control module 30, so that the second feedback resistance adjusting module 221 receives a third control signal, for example, a sixth control sub-signal, output by the control module 30, and thus the feedback resistance of the second operational amplifier U3 is adjusted.

It is understood that the names "first control signal", "second control signal", and "control signal" may be interchanged in some embodiments. For example, in one embodiment, the "first control signal" in other embodiments is referred to as a "second control signal", and accordingly, the "second control signal" in other embodiments is referred to as a "first control signal".

It is to be understood that the names "first control sub-signal", "second control sub-signal", "third control sub-signal", "fourth control sub-signal", "fifth control sub-signal", "sixth control sub-signal", and "control sub-signal" may be mutually converted in some embodiments. For example, in one embodiment, the "first control sub-signal" in other embodiments is referred to as the "second control sub-signal", and accordingly, the "second control sub-signal" in other embodiments is referred to as the "first control sub-signal".

Specifically, the second feedback resistance adjustment module 221 may include a sixteenth resistor R16 and a second single-pole, single-position switch SW-SPST2 connected in series. The second single-pole single-position switch SW-SPST2 is controlled by a third control signal, for example, a sixth control sub-signal, output by the control module 30, and adjusts the feedback resistance of the second operational amplifier U3.

It is to be understood that the names "first single-pole single-position switch", "second single-pole single-position switch", and "single-pole single-position switch" may be interchanged in some embodiments. For example, in one embodiment, the "first single-pole single-position switch" in other embodiments is referred to as a "second single-pole single-position switch", and accordingly, the "second single-pole single-position switch" in other embodiments is referred to as a "first single-pole single-position switch".

When the second single-pole single-position switch SW-SPST2 is closed, the sixteenth resistor R16 is connected in parallel with the twelfth resistor R12, so that the feedback resistance of the second operational amplifier U3 is reduced, and the control voltage at the output terminal of the operational amplifier circuit 20 is changed.

In one embodiment, the feedback resistors of the second operational amplifier U3, i.e., the twelfth resistor R12 and the sixteenth resistor 16, may be replaced by a variable resistor. The variable resistor is controlled by a third control signal, e.g., a fifth control sub-signal, output by the control module 30 to adjust the feedback resistance.

In one embodiment, the control voltage at its output, i.e., the voltage across the PDLC material, is also varied by adjusting the supply voltage of the op-amp circuit 20. For example, the first single-pole single-position switch SW-SPST1 and the second single-pole single-position switch SW-SPST2 are controlled to change the feedback resistance of the operational amplifier, so that the supply voltage of the operational amplifier circuit 20 can output four different control voltages. By controlling the change of the circuit structure or parameters, the single change effect is improved to the change effect of controlling the electrochromic device 400 by multiple gradients and different control voltages, so that the expressive force of the product can be improved.

In an embodiment, referring to fig. 12, fig. 12 discloses a circuit schematic diagram of another embodiment of the operational amplifier circuit 20 shown in fig. 8. The operational amplifier circuit 20 may include the first operational amplifier sub-circuit 21 in the above-described embodiment and the second operational amplifier sub-circuit 22 in the above-described embodiment. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as the input terminal of the operational amplifier circuit 20. The control terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal of the control module 30. The output terminal Vout1 of the first operational amplifier sub-circuit 21 is electrically connected to one input terminal of the electrochromic device 400. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as another input terminal of the operational amplifier circuit 20. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to another output terminal of the control module 30. The output terminal Vout1 of the second operational amplifier sub-circuit 22 is electrically connected to another input terminal of the electrochromic device 400.

The first feedback resistance adjusting module 211 in the above embodiment is electrically connected between the inverting input terminal of the first operational amplifier U2 in the first operational amplifier circuit 21 and the output terminal Vout 1. The second feedback resistance adjusting module 221 in the above embodiment is electrically connected between the inverting input terminal of the second operational amplifier U3 in the second operational amplifier circuit 22 and the output terminal Vout 1.

In one embodiment, the fifteenth resistor R15 is 500k Ω.

In one embodiment, the sixteenth resistor R15 is 500k Ω.

In an embodiment, referring to fig. 13, fig. 13 discloses a circuit schematic diagram of another embodiment of the operational amplifier circuit 20 in the embodiment of fig. 11 of the present application. The operational amplifier circuit 20 may include the first operational amplifier sub-circuit 21 in the above-described embodiment and the second operational amplifier sub-circuit 22 in the above-described embodiment. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as the input terminal of the operational amplifier circuit 20. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal of the control module 30. The output terminal Vout1 of the first operational amplifier sub-circuit 21 is electrically connected to one input terminal of the electrochromic device 400. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as another input terminal of the operational amplifier circuit 20. An input terminal of the second operational amplifier sub-circuit 22 may be electrically connected to another output terminal of the control module 30. The output terminal Vout1 of the second operational amplifier sub-circuit 22 is electrically connected to another input terminal of the electrochromic device 400.

Specifically, the first operational amplification sub-circuit 21 may include the first operational amplification sub-circuit 21. An input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal VREG _ OUT of the dc boost converter U1 as an input terminal of the operational amplifier circuit 20. The input terminal of the first operational amplifier sub-circuit 21 may be electrically connected to the output terminal of the control module 30. The output terminal Vout1 of the first operational amplifier sub-circuit 21 is electrically connected to one input terminal of the electrochromic device 400, and the other input terminal of the electrochromic device 400 is grounded.

In one embodiment, the first feedback resistance adjusting module 211 in the above embodiment is electrically connected between the inverting input terminal of the first operational amplifier U2 in the first operational amplifier circuit 21 and the output terminal Vout 1.

The non-inverting input terminal of the first operational amplifier U2 is electrically connected to one terminal of the ninth resistor R9. The other end of the ninth resistor R9 is connected to ground.

The first power supply terminal and the second power supply terminal of the first operational amplifier U2 may be electrically connected to the output terminal VREG _ OUT of the voltage-up converter circuit 10.

The output terminal Vout1 of the first operational amplifier U2 may be electrically connected to one end of a seventeenth resistor R17. The other end of the seventeenth resistor R17 is grounded.

It is to be understood that the names of "first resistor", "second resistor", "third resistor", "fourth resistor", "fifth resistor", "sixth resistor", "seventh resistor", "eighth resistor", "ninth resistor", "tenth resistor", "eleventh resistor", "twelfth resistor", "thirteenth resistor", "fourteenth resistor", "fifteenth resistor", "sixteenth resistor", "seventeenth resistor", and "resistor" may be interchanged in some embodiments. For example, in one embodiment, the "first resistance" in other embodiments is referred to as "second resistance", and accordingly, the "second resistance" in other embodiments is referred to as "first resistance".

The second operational amplifier sub-circuit 22 may include a second operational amplifier U3. An inverting input terminal of the second operational amplifier U3 is electrically connected to one end of the eleventh resistor R11. The other end of the eleventh resistor R11 is grounded.

In one embodiment, the second feedback resistance adjusting module 221 in the above embodiment is electrically connected between the inverting input terminal of the second operational amplifier U3 in the second operational amplifier circuit 22 and the output terminal Vout 2.

The non-inverting input terminal of the second operational amplifier U3 may be electrically connected to one terminal of the third capacitor C3 and one terminal of the fourteenth resistor R14, respectively. The other end of the fourteenth resistor R14 is grounded.

It is to be understood that the names "first capacitor", "second capacitor", "third capacitor", "fourth capacitor", "fifth capacitor", "sixth capacitor", and "capacitor" may be mutually converted in some embodiments. For example, in one embodiment, the "first capacitance" in other embodiments is referred to as the "second capacitance", and accordingly, the "second capacitance" in other embodiments is referred to as the "first capacitance".

In one embodiment, the seventeenth resistor R17 is 1G Ω.

In an embodiment, referring to fig. 13, the first operational amplifier sub-circuit 21 is an inverting scaling circuit, and the second operational amplifier sub-circuit 22 is an in-phase scaling circuit.

Next, an electronic apparatus that can use the electrochromic device 400 in the above-described embodiment as a part of a housing will be explained. The above-described electronic system 100 may also be provided. The electronic device may be a mobile terminal or other electronic devices with display and camera functions, and specifically may be a mobile phone, a tablet computer, a notebook computer, an intelligent bracelet, an intelligent watch, an intelligent helmet, intelligent glasses, and the like. In the embodiment of the present application, a mobile phone is taken as an example for description. It is understood that the specific form of the electronic device may be other, and is not limited herein. Referring to fig. 14, a block diagram of an embodiment of an electronic device according to the present application is disclosed. The electronic device 500 may include a bezel (not shown), a display module (not shown), a control circuit 501, and a cover assembly 600. Specifically, the cover plate assembly 600 may include the electrochromic device 400 in the above-described embodiment and a cover plate (not shown) disposed to be stacked with the electrochromic device 400. The center assembles the casing with apron subassembly 600, and the casing is inside to set up accommodation space, and center and apron fixed connection form accommodation space promptly. The housing is used for carrying the display module and the control circuit 501. The control circuit 501 is coupled to the electrochromic device 400 of the cover plate assembly 600, and the control circuit 501 is configured to receive a control command, where the control command is used to control the electrochromic device 400 to change color. Of course, the housing space of the housing may also be used to house electronic components such as a battery, a motherboard 506, a processor (the processor may be disposed on the motherboard 506), various types of sensors (the sensors may also be disposed on the motherboard 506 and other locations within the housing space, such as a temperature sensor). In one embodiment, the display module and the cover assembly 600 are respectively disposed on two opposite sides of the middle frame and fixedly connected to the middle frame, and the electrochromic device 400 is closer to the display module than the cover.

It is understood that in the electronic device 500, the main board 506 is used as the main hardware, and therefore, the control circuit 501 may be disposed on the main board 506, and the control device 300 in the above embodiment may also be disposed. The motherboard 506 may be electrically connected (or, so to speak, coupled) to the electrochromic device 400 via a flexible circuit board.

In an embodiment, please refer to fig. 15, which discloses a block diagram of a structural component of an electronic apparatus 500 in another implementation of the present application, unlike the previous embodiment, the electronic apparatus 500 in this implementation further includes a signal input device 502, wherein the signal input device 502 is coupled to the control circuit 501. Specifically, the control circuit 501 is configured to receive a control command input through the signal input device 502 and control the operating state of the electrochromic device 400 according to the control command. Wherein, the working state of the electrochromic device 400 includes controlling and changing the voltage or current signal state thereof to achieve the purpose of controlling the electrochromic device 400 to change color (coloring or fading state). The signal input device 502 may include a touch display screen 503 (also referred to as a display module), an operation key 504, a trigger sensor 505, and the like, and the detailed structure and the signal input method are as follows.

Optionally, referring to fig. 16, fig. 16 discloses a schematic structural diagram of an electronic device 500 in an embodiment of the present application, where the signal input device 502 may be a touch display screen 503 (i.e., a display module in the above embodiment), and the control instruction input by the signal input device 502 may be a touch operation received by the touch display screen 503, including at least one of sliding, clicking and long pressing, please refer to fig. 17 and fig. 18, which respectively disclose a schematic diagram of an operating state of the electronic device 500 in an embodiment of the present application. Wherein, the operator (reference 507 in the figure can be represented as the hand of the operator) can input the control instruction by sliding the touch display screen 503 in fig. 17; the state in fig. 18 may indicate that the operator performs the input process of the control command by clicking or long-pressing the chart or the specific position on the touch display screen 503.

In an embodiment, referring to fig. 15, the signal input device 502 may be an operation key 504, and the control instruction may also be a triggering instruction of the operation key 504, where the operation key 504 may be a single key, or may be a multiplexing function with other function keys of the electronic device 500, such as a power key, a volume key, and the like, and the different control instructions received by the control circuit 501 are defined according to different key triggering manners, so that the control circuit 501 can implement different signal controls on the electrochromic device 400.

Optionally, the control instruction is a use scene that requires the electronic device 500 to change color, and may specifically include at least one of an image acquisition requirement, a flash lamp starting requirement, an automatic timing color change requirement, and other functional component requirements. Specifically, the image capturing requirement may be applied to a scene where the user has a shooting requirement, such as a scene of taking a picture, shooting a camera, performing a video call, or the like, a scene where the electronic device 500 has an unlocking requirement, a payment requirement, an encryption requirement, an incoming call answering requirement, or other confirmation requirements, or the like. The flash lamp turning-on requirement may be a situation where a user needs to turn on the flash lamp, specifically, the control circuit 501 controls the electrochromic device 400 to change the transparent state, so that the electronic device 500 may exhibit a color-changing appearance effect.

Further, referring to fig. 15, the signal input device 502 may be a trigger sensor 505, wherein the trigger sensor 505 may be a proximity sensor, a temperature sensor, an ambient light sensor, or the like, and the trigger sensor 505 collects peripheral signals of the electronic device 500 and controls the housing to change the appearance color through the control circuit 501. That is, the change of the appearance color of the housing enables the user to actively perform operation type control, similar to the control mode through the touch display screen 503 and the operation keys 504; in the present embodiment, the trigger sensor 505 may automatically detect an environmental signal to automatically control the housing to change its appearance color.

In one embodiment, the processor on the motherboard 506 may be the control module 30 shown in FIG. 1.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of modules or units is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are all included in the scope of the present application.

Claims

1. A control device, comprising:

2. The control device according to claim 1, wherein the first operational amplifier sub-circuit comprises a first operational amplifier, a positive input terminal of the first operational amplifier is electrically connected to one terminal of a first resistor and one terminal of a second resistor, respectively, the other terminal of the first resistor is electrically connected to the power supply, the other terminal of the second resistor is grounded, an negative input terminal of the first operational amplifier is electrically connected to one terminal of a third resistor, the other terminal of the third resistor is electrically connected to a first capacitor, the other terminal of the first capacitor is electrically connected to an output terminal of the control module, and an output terminal of the first operational amplifier is electrically connected to the one input terminal of the electrochromic device.

3. The control device of claim 2, wherein the first power terminal of the first operational amplifier is electrically connected to the power supply, and the second power terminal of the first operational amplifier is grounded.

4. The control device according to claim 2, wherein the inverting input terminal of the first operational amplifier is electrically connected to one terminal of a fourth resistor and one terminal of a second capacitor, respectively, and the other terminal of the fourth resistor and the other terminal of the second capacitor are electrically connected to the output terminal of the first operational amplifier, respectively.

5. The control device of claim 4, wherein the first operational amplifier sub-circuit further comprises a first feedback resistance adjustment module, the first feedback resistance adjustment module is configured to adjust a feedback resistance of the first operational amplifier, and the first feedback resistance adjustment module comprises:

one end of the fifth resistor is electrically connected with the inverting input end of the first operational amplifier;

and one end of the first single-pole single-position switch is electrically connected with the other end of the fifth resistor, the other end of the first single-pole single-position switch is electrically connected with the output end of the first operational amplifier, and the first single-pole single-position switch is configured to be electrically connected with the output end of the control module so as to be opened and closed under the control of the control module.

6. The control device according to any one of claims 2 to 5, wherein the operational amplification circuit further includes:

and the second operational amplifier sub-circuit is a differential amplifier circuit, one input end of the second operational amplifier sub-circuit is used for being electrically connected with a power supply, and the output end of the second operational amplifier sub-circuit is used for being electrically connected with the other input end of the electrochromic device so as to be electrically connected with the operational amplifier circuit to form a closed loop.

7. The control device of claim 6, wherein the second operational amplifier sub-circuit comprises a second operational amplifier, a positive input terminal of the second operational amplifier is electrically connected to one terminal of the first resistor, which is connected to the second resistor, a negative input terminal of the first operational amplifier is electrically connected to one terminal of a sixth resistor, which is electrically connected to one terminal of the third capacitor, which is electrically connected to an output terminal of the control module, and an output terminal of the second operational amplifier is electrically connected to the other input terminal of the electrochromic device.

8. The control device of claim 7, wherein the first power terminal of the second operational amplifier is electrically connected to the power supply, and the second power terminal of the second operational amplifier is grounded.

9. The control device according to claim 7, wherein the inverting input terminal of the second operational amplifier is electrically connected to one terminal of a seventh resistor and one terminal of a fourth capacitor, respectively, and the other terminal of the seventh resistor and the other terminal of the fourth capacitor are electrically connected to the output terminal of the second operational amplifier, respectively.

10. The control device of claim 9, wherein the second operational amplifier sub-circuit further comprises a second feedback resistance adjustment module, the second feedback resistance adjustment module is configured to adjust a feedback resistance of the second operational amplifier, and the second feedback resistance adjustment module comprises:

one end of the eighth resistor is electrically connected with the inverting input end of the second operational amplifier;

and one end of the second single-pole single-position switch is electrically connected with the other end of the eighth resistor, the other end of the second single-pole single-position switch is electrically connected with the output end of the second operational amplifier, and the second single-pole single-position switch is configured to be electrically connected with the output end of the control module so as to be opened and closed under the control of the control module.

11. The control device of any one of claims 1-5, wherein the other input terminal of the electrochromic device is configured to be grounded to form a closed loop with the operational amplifier circuit.

12. The control device according to any one of claims 1 to 5, wherein the operational amplification circuit further includes:

the second operational amplifier sub-circuit is a differential amplifier circuit and comprises a second operational amplifier, a positive phase input end of the second operational amplifier is respectively and electrically connected with one end of a ninth resistor and one end of a tenth resistor, the other end of the ninth resistor is electrically connected with the power supply, the other end of the tenth resistor is grounded, an inverted phase input end of the first operational amplifier is electrically connected with one end of a sixth resistor, the other end of the sixth resistor is electrically connected with a third capacitor, the other end of the third capacitor is electrically connected with an output end of the control module, and an output end of the second operational amplifier is used for being electrically connected with the other input end of the electrochromic device.

13. The control device according to claim 12, wherein the inverting input terminal of the second operational amplifier is electrically connected to one end of a seventh resistor and one end of a fourth capacitor, respectively, and the other end of the seventh resistor and the other end of the fourth capacitor are electrically connected to the output terminal of the second operational amplifier, respectively.

14. The control device of claim 13, wherein the second operational amplifier sub-circuit further comprises a second feedback resistance adjustment module, the second feedback resistance adjustment module is configured to adjust a feedback resistance of the second operational amplifier, and the second feedback resistance adjustment module comprises:

15. The control device according to any one of claims 1 to 5, further comprising a boost converter circuit configured to be electrically connected between the power supply and the operational amplifier circuit, wherein the boost converter circuit comprises a DC boost converter, an input terminal of the DC boost converter is configured to be electrically connected to the power supply, an output terminal of the DC boost converter is electrically connected to an input terminal of the operational amplifier circuit, a fifth capacitor is electrically connected between the input terminal of the DC boost converter and a common ground terminal, an inductor is electrically connected between the input terminal of the DC boost converter and the switch control terminal, an eleventh resistor is electrically connected between the input terminal of the DC boost converter and the enable terminal, and an enable terminal of the DC boost converter is electrically connected to one terminal of a twelfth resistor, the other end of the twelfth resistor is grounded, a thirteenth resistor is electrically connected between the output end of the direct current boost converter and the output voltage feedback end, the output end of the direct current boost converter is electrically connected with one end of a sixth capacitor, the other end of the sixth capacitor is grounded, the voltage feedback end of the direct current boost converter is electrically connected with one end of a fourteenth resistor, and the other end of the fourteenth resistor is grounded.

16. The control device of claim 15, wherein the boost converter circuit further comprises an output voltage feedback regulation module electrically connected to the voltage feedback terminal of the dc boost converter for regulating the voltage at the voltage feedback terminal of the dc boost converter.

17. The control apparatus of claim 16, wherein the output voltage feedback regulation module comprises a first output voltage feedback regulation submodule, the first output voltage feedback regulation submodule comprising:

one end of the fifteenth resistor is electrically connected with the output voltage feedback end of the direct current boost converter;

a first metal-oxide-semiconductor field effect transistor, a drain of which is electrically connected with the other end of the fifteenth resistor, a source ground of which is grounded, and a gate of which is electrically connected with the control module, so that the first metal-oxide-semiconductor field effect transistor is turned on or off under the control of the control module; and

and one end of the first bi-directional transient voltage suppression diode is electrically connected with the grid electrode of the first metal-oxide-semiconductor field effect transistor, and the other end of the first bi-directional transient voltage suppression diode is electrically connected with the source electrode of the first metal-oxide-semiconductor field effect transistor.

18. The control device of claim 17, wherein the output voltage feedback regulation module further comprises a second output voltage feedback regulation submodule, the second output voltage feedback regulation submodule comprising:

one end of the sixteenth resistor is electrically connected with the output voltage feedback end of the direct current boost converter;

a drain of the second metal-oxide-semiconductor field effect transistor is electrically connected with the other end of the sixteenth resistor, a source of the second metal-oxide-semiconductor field effect transistor is grounded, and a gate of the second metal-oxide-semiconductor field effect transistor is electrically connected with the control module so that the second metal-oxide-semiconductor field effect transistor is switched on or off under the control of the control module; and

and one end of the second bidirectional transient voltage suppression diode is electrically connected with the grid electrode of the second metal-oxide-semiconductor field effect transistor, and the other end of the second bidirectional transient voltage suppression diode is electrically connected with the source electrode of the second metal-oxide-semiconductor field effect transistor.

19. A control device, comprising:

20. The control device of claim 19, wherein the first operational amplifier sub-circuit comprises a first operational amplifier, a negative phase input terminal of the first operational amplifier is electrically connected to one end of a first resistor, the other end of the first resistor is electrically connected to one end of a first capacitor, the other end of the first capacitor is electrically connected to an output terminal of the control module, a positive phase input terminal of the first operational amplifier is electrically connected to one end of a second resistor, the other end of the second resistor is grounded, an output terminal of the first operational amplifier is electrically connected to the input terminal of the electrochromic device, an output terminal of the first operational amplifier is electrically connected to one end of a third resistor, and the other end of the third resistor is grounded.

21. The control device of claim 20, wherein the first power terminal and the second power terminal of the first operational amplifier are both electrically connected to a power supply.

22. The control device according to claim 20, wherein the inverting input terminal of the first operational amplifier is electrically connected to one terminal of a fourth resistor and one terminal of a second capacitor, respectively, and the other terminal of the fourth resistor and the other terminal of the second capacitor are electrically connected to the output terminal of the first operational amplifier, respectively.

23. The control device of claim 22, wherein the first operational amplifier sub-circuit further comprises a first feedback resistance adjustment module, the first feedback resistance adjustment module being configured to adjust a feedback resistance of the first operational amplifier, the first feedback resistance adjustment module comprising:

24. The control device as claimed in any one of claims 20 to 23, wherein the second operational amplifier sub-circuit comprises a second operational amplifier, a non-inverting input terminal of the second operational amplifier is electrically connected to one end of the first capacitor connected to the first resistor, a non-inverting input terminal of the first operational amplifier is electrically connected to one end of a sixth resistor, the other end of the sixth resistor is grounded, an inverting input terminal of the first operational amplifier is electrically connected to one end of a seventh resistor, the other end of the seventh resistor is grounded, and an output terminal of the second operational amplifier is electrically connected to the other input terminal of the electrochromic device.

25. The control device of claim 24, wherein the first power terminal and the second power terminal of the second operational amplifier are both electrically connected to a power supply.

26. The control device according to claim 24, wherein an inverting input terminal of the second operational amplifier is electrically connected to one terminal of an eighth resistor and one terminal of a third capacitor, respectively, and the other terminal of the eighth resistor and the other terminal of the third capacitor are electrically connected to an output terminal of the second operational amplifier, respectively.

27. The control device of claim 26, wherein the second operational amplifier sub-circuit further comprises a second feedback resistance adjustment module, the second feedback resistance adjustment module being configured to adjust a feedback resistance of the second operational amplifier, the second feedback resistance adjustment module comprising:

one end of the ninth resistor is electrically connected with the inverting input end of the second operational amplifier;

and one end of the second single-pole single-position switch is electrically connected with the other end of the ninth resistor, the other end of the second single-pole single-position switch is electrically connected with the output end of the second operational amplifier, and the second single-pole single-position switch is configured to be electrically connected with the output end of the control module so as to be opened and closed under the control of the control module.

28. An electronic system comprising an electrochromic device and the control apparatus of any of claims 1-27, wherein the operational amplifier circuit is electrically connected to the electrochromic device and outputs a control voltage to the electrochromic device, and wherein the electrochromic device is configured to change color at the control voltage.

29. An electronic device comprising a center frame, a transparent cover, and the electronic system of claim 28, wherein the transparent cover is fixedly attached to the center frame and forms an accommodating space, and wherein the electrochromic device is disposed in the accommodating space and stacked on the transparent cover.