Electronic device

Abstract

To solve a problem that, since an electronic device carried by a user is desired to be usable for a long period of time, it is required to install a large capacity battery, and when a large capacity battery is installed in the electronic device, the large capacity battery is large and heavy, and to provide an electronic device which is used while being buried in a human body, and includes an emergency battery.SOLUTION: An electronic device provided with a plurality of batteries includes a transmitting section and a receiving section which carry out wireless charging between different batteries. A power source control circuit selects a battery to be charged or to be used depending on the time and situation.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] One aspect of the present invention relates to an article, a method, or a manufacturing method. Alternatively, the present invention relates to a process, a machine, a manufacture, or a composition of matter. One aspect of the present invention relates to a semiconductor device, a display device, a light-emitting device, a power storage device, a lighting device, an electronic device, or a manufacturing method thereof. In particular, it relates to an electronic device and its operation system.

[0002] Note that in this specification, the electronic device refers to all devices having a secondary battery, and electro-optical devices having a secondary battery, information terminals having a secondary battery, etc. are all electronic devices.

Background Art

[0003] Electronic devices carried by users and electronic devices worn by users are being actively developed.

[0004] Electronic devices carried by users and electronic devices worn by users operate using a battery as a power source, so they minimize power consumption. In particular, when a CPU (Central Processing Unit) is included in an electronic device, the CPU consumes a large amount of power during operation, so the processing of the CPU has a great influence on power consumption.

[0005] A semiconductor device having a high-function integrated circuit (such as a CPU) on a plastic or plastic film substrate and performing wireless transmission and reception of power or signals is described in Patent Document 1.

Prior Art Documents

Patent Documents

[0006]

Patent Document 1

[0007] It is desirable for users to use electronic devices for long periods of time, and for this reason, large-capacity batteries are required. If a large capacity battery is built into an electronic device, Therefore, we are developing a small and large sensor that can be built into portable electronic devices. The development of batteries with a large capacity is currently underway. The definition of "device" is to include a built-in device that cannot be removed or replaced, and also includes a battery. Things that can be freely removed, such as packs, are also called built-in.

[0008] We will also explain the details of power consumption in electronic devices that include a CPU. The power consumed by the CPU and the system around the CPU can be divided into ,power consumed by multiple input / output devices and peripheral devices connected inside and outside the electronic device. The power consumed by the system around the CPU can be divided into converters and Losses in the data, losses in the wiring pattern, and power consumption in the bus and controller, etc. Included.

[0009] Furthermore, as electronic devices become smaller and thinner, the batteries also face limitations. Terry's volume is reduced, so the capacity is reduced. This will house the circuitry, battery, etc.

[0010] In addition, the battery generates heat when it is charged or discharged, which may have a thermal effect on the surrounding area. do.

[0011] As electronic devices become smaller and smaller, circuits, batteries, etc., are housed in smaller spaces, One of the challenges is how to control power consumption and heat generation.

[0012] In addition, the present invention provides an electronic device with a novel structure. Specifically, the electronic device can be made into various external shapes. More specifically, the present invention provides an electronic device that can be worn on the body. We propose wireless electronic devices and electronic devices that can be implanted in the body.

[0013] In particular, if the battery of an electronic device that is implanted in the body is destroyed or consumed for some reason, If this happens, there is a risk of serious harm to the user.

[0014] Therefore, electronic devices carried by users, wearable electronic devices worn on the body, and To provide an electronic device that is embedded in a body and has an emergency power supply.

[0015] The description of these problems does not preclude the existence of other problems. The embodiment does not necessarily have to solve all of these problems. The above will be made clear from the description, drawings, claims, etc. It is possible to extract other issues from the descriptions in the patent, claims, etc. [Means for solving the problem]

[0016] A battery is provided for each component used in the electronic device, making the electronic device have a plurality of power sources. As an electronic device with multiple power sources, it is possible to selectively drive only the parts that are being used. The application system can reduce power consumption.

[0017] Further, the electronic device has a power management circuit (including a power monitoring circuit) for managing the plurality of power supplies. )

[0018] The configuration disclosed in this specification is an electronic device having a central processing unit, a display unit, and a receiving unit. The central processing unit has a first battery and a first receiving unit. The first receiving unit has a function of being able to wirelessly charge the first battery. The display unit has a second battery and a second receiving unit. The second receiving unit has a function of being able to wirelessly charge the second battery. The receiving unit has a third battery and a third receiving unit. The third receiving unit has a function of being able to wirelessly charge the third battery, and is characterized by an electronic device.

[0019] Also, it may be an electronic device capable of transmitting and receiving between a plurality of batteries. The configuration disclosed in this specification is an electronic device having a central processing unit, a display unit, a receiving unit, a transmitting unit, and a power management circuit. The central processing unit has a first battery, a first receiving unit, and a first transmitting unit. The first receiving unit has a function of being able to wirelessly charge the first battery. The display unit has a second battery, a second receiving unit, and a second transmitting unit. The second receiving unit has a function of being able to wirelessly charge the second battery. The receiving unit has a third battery, a third receiving unit, and a third transmitting unit. The third receiving unit has a function of being able to wirelessly charge the third battery. The power management circuit has a function of being able to wirelessly charge the power of the first battery from the first transmitting unit to the second battery or the third battery, and is characterized by an electronic device.

[0020] In addition, a circuit is connected to each battery so that each battery can be wirelessly charged. At least each secondary battery is configured to be electrically connected to each wireless receiving unit via each regulator.

[0021] A regulator is a type of electronic circuit that controls to keep the output voltage or current constant at all times. A regulator is classified into two types: a linear regulator and a switching regulator depending on the degree of the power load, etc. Note that a switching regulator is also called a DC-DC converter.

[0022] Furthermore, each battery may have a transmitting unit capable of charging the power of one battery to another battery. Also, a power management circuit that manages the power amount of each battery regularly or constantly acquires the remaining amount data of each battery and appropriately adjusts the power.

[0023] For example, in an information terminal such as a mobile phone or a smartphone that has one power source, when the one power source is turned off, all functions stop, but when the power source is turned on, even if there is a function circuit that is not in use, it is in a standby state, so a small amount of power is consumed. If there is a function circuit that is not in use, the electrical connection between the function circuit that is not in use and the battery can be turned off, and the power consumption can be saved accordingly. For example, when only a still image is displayed on the display unit of the information terminal, in order to turn off the CPU that is not in use, the connection with the battery for the CPU is turned off, and only the battery for the circuit that drives to display the still image of the display unit that is in use is used. In this case, this information terminal Although a still image is being displayed, the CPU is not operating, and from the outside, the power consumption of the CPU can be regarded as zero.

[0024] In this way, by appropriately selecting the battery corresponding to the component to be used from among the multiple batteries in the electronic device and controlling it with an operation system, the battery to be used is determined, and by suppressing the power consumption of the batteries not in use, the available time of the information terminal per charge can be extended. The configuration of the present invention regarding the operation system is the first battery, the second battery, the third battery, and a power management circuit that manages the first to third batteries, and using wireless, the power management circuit supplies power from the first battery to the second battery or the third battery. There is an operation system. Also, it has a first battery, a second battery, a third battery, and a control unit that manages the first to third batteries, and using wireless, it may be an operation system that simultaneously charges the first, second, and third batteries.

[0025] Furthermore, the power management circuit may control to supply power from the battery connected to the function to be used to another battery connected to another function not in use. By appropriately selecting the battery corresponding to the component to be used from among the multiple batteries in the electronic device and adjusting the power amount of each battery with an operation system, the available time of the function to be used can be extended. Also, if any of the batteries is secured as an emergency power source by the power management circuit, the electronic device can be used in an emergency. ​​​​​​​​​​It can also be set to. For example, in a mobile phone or the like, when the power is turned on, an image is displayed on the display unit. Therefore, if there is no power to display an image on the display unit, the phone may not be able to make a call. When there is no power to display an image on the display unit, the phone may not be able to make a call. Regarding an electronic device having a plurality of batteries, the power management circuit secures one battery as an emergency power source, turns off the power supply to the display unit, and enables the emergency power source to be used only for the communication function. Then, a call can be made without displaying an image on the display unit. Regarding an electronic device having a plurality of batteries, the power management circuit secures one battery as an emergency power source, turns off the power supply to the display unit, and enables the emergency power source to be used only for the communication function. Then, a call can be made without displaying an image on the display unit. Regarding an electronic device having a plurality of batteries, the power management circuit secures one battery as an emergency power source, turns off the power supply to the display unit, and enables the emergency power source to be used only for the communication function. Then, a call can be made without displaying an image on the display unit. Regarding an electronic device having a plurality of batteries, the power management circuit secures one battery as an emergency power source, turns off the power supply to the display unit, and enables the emergency power source to be used only for the communication function. Then, a call can be made without displaying an image on the display unit.

[0026] In addition, if small batteries are scattered inside the electronic device and the exterior body is made of a flexible material, a flexible device with a complex exterior shape can be realized. In addition, if small batteries are scattered inside the electronic device and the exterior body is made of a flexible material, a flexible device with a complex exterior shape can be realized.

[0027] Also, in a wearable electronic device that is worn on the body and used, by arranging small batteries scattered inside the electronic device, the sense of weight can be reduced compared to an electronic device having one large battery. Also, even if each small battery generates heat, it does not hinder the wearing feeling of the user. Also, in a wearable electronic device that is worn on the body and used, by arranging small batteries scattered inside the electronic device, the sense of weight can be reduced compared to an electronic device having one large battery. Also, even if each small battery generates heat, it does not hinder the wearing feeling of the user. Also, in a wearable electronic device that is worn on the body and used, by arranging small batteries scattered inside the electronic device, the sense of weight can be reduced compared to an electronic device having one large battery. Also, even if each small battery generates heat, it does not hinder the wearing feeling of the user. Also, in a wearable electronic device that is worn on the body and used, by arranging small batteries scattered inside the electronic device, the sense of weight can be reduced compared to an electronic device having one large battery. Also, even if each small battery generates heat, it does not hinder the wearing feeling of the user.

[0028] Also, in an artificial organ, by arranging small batteries scattered inside the electronic device, the degree of freedom in shape can be given. Also, if the exterior body is made of a flexible material, a flexible artificial organ can be realized. When making a flexible artificial organ, dividing it into a plurality of batteries rather than using one battery allows for a design that is more easily bent. Also, an exterior shape of an artificial organ that is thinner than when using one battery can be realized, or miniaturization can also be achieved. Also, each small battery arranged scattered inside the artificial organ Also, in an artificial organ, by arranging small batteries scattered inside the electronic device, the degree of freedom in shape can be given. Also, if the exterior body is made of a flexible material, a flexible artificial organ can be realized. When making a flexible artificial organ, dividing it into a plurality of batteries rather than using one battery allows for a design that is more easily bent. Also, an exterior shape of an artificial organ that is thinner than when using one battery can be realized, or miniaturization can also be achieved. Also, each small battery arranged scattered inside the artificial organ Also, in an artificial organ, by arranging small batteries scattered inside the electronic device, the degree of freedom in shape can be given. Also, if the exterior body is made of a flexible material, a flexible artificial organ can be realized. When making a flexible artificial organ, dividing it into a plurality of batteries rather than using one battery allows for a design that is more easily bent. Also, an exterior shape of an artificial organ that is thinner than when using one battery can be realized, or miniaturization can also be achieved. Also, each small battery arranged scattered inside the artificial organ Also, in an artificial organ, by arranging small batteries scattered inside the electronic device, the degree of freedom in shape can be given. Also, if the exterior body is made of a flexible material, a flexible artificial organ can be realized. When making a flexible artificial organ, dividing it into a plurality of batteries rather than using one battery allows for a design that is more easily bent. Also, an exterior shape of an artificial organ that is thinner than when using one battery can be realized, or miniaturization can also be achieved. Also, each small battery arranged scattered inside the artificial organ Also, in an artificial organ, by arranging small batteries scattered inside the electronic device, the degree of freedom in shape can be given. Also, if the exterior body is made of a flexible material, a flexible artificial organ can be realized. When making a flexible artificial organ, dividing it into a plurality of batteries rather than using one battery allows for a design that is more easily bent. Also, an exterior shape of an artificial organ that is thinner than when using one battery can be realized, or miniaturization can also be achieved. Also, each small battery arranged scattered inside the artificial organ Also, in an artificial organ, by arranging small batteries scattered inside the electronic device, the degree of freedom in shape can be given. Also, if the exterior body is made of a flexible material, a flexible artificial organ can be realized. When making a flexible artificial organ, dividing it into a plurality of batteries rather than using one battery allows for a design that is more easily bent. Also, an exterior shape of an artificial organ that is thinner than when using one battery can be realized, or miniaturization can also be achieved. Also, each small battery arranged scattered inside the artificial organ If the battery can be wirelessly charged, the number of times of periodically removing and implanting the artificial organ before the battery runs out can be reduced.

[0029] Also, in artificial organs such as pacemakers and cochlear implants, after being implanted in the skin, the part where the artificial organ is implanted swells, and the skin is stretched into an unnatural state and is likely to become so. There are quite a few users who are concerned about such an appearance. Therefore, even if the area of the artificial organ is large, it is better to be thinner, and it is useful to arrange small batteries dispersedly in the artificial organ to suppress the swelling of that part after being implanted in the skin.

[0030] Also, when the battery is damaged or consumed due to some reason in an artificial organ or the like, since there is a risk of causing great harm to the user, it is useful to have an emergency power source. . It is desirable to provide a plurality of batteries in the artificial organ and use the batteries other than the battery that cannot be used by a power management circuit for managing them to transmit an emergency signal or the like to the outside (for example, the user's information terminal). It is difficult to determine whether there is an abnormality in the battery. When an artificial organ is configured such that a certain battery is used as an emergency power source, if that battery becomes unusable, there is a risk that it will no longer serve as an emergency power source. It is useful for the power management circuit to identify the abnormal battery and stop the power supply from that battery, select another battery as the emergency power source, and transmit an emergency signal or the like. That is, it is useful for the power management circuit to select the battery to be used flexibly. Of course,

[0031] In addition, in the case of an electronic device having a curved surface or a complex shape, when using a single large battery, there are limitations in the placement of the battery, and the design may be impaired by the large battery. There is a risk of spoilage. Especially in the case of wearable electronic devices, such as thin electronic devices that can be wrapped around the arm, it is difficult to bend a large battery. If a plurality of small batteries are scattered and arranged in a thin electronic device that can be wrapped around the arm, each small battery can be mounted on the thin electronic device without being bent. In addition, since wearable electronic devices are also close to the skin, if there is heat generation with a large battery, the user may feel discomfort. However, if small batteries are scattered and arranged, the amount of heat generation per unit can be suppressed. In addition, if small batteries are scattered and arranged, the risk of explosion and the like can be suppressed, and the safety is higher than that of a large battery. When the user drops the electronic device while carrying it, if there is a single large battery, all functions of the electronic device may become unusable due to damage to that battery. When using a plurality of small batteries, even if one of the small batteries is damaged, as long as at least one small battery can be used, some functions can be used. In this way, an electronic device having a plurality of small batteries provided with small batteries for each component can be realized as an electronic device that is difficult to break because it can be partially used even if a part is broken. In addition, even if one of the small batteries is damaged or the power amount becomes zero, the electronic device can be used by substituting with other batteries by a power management circuit. In addition, even if one of the small batteries is damaged or the power amount becomes zero, the electronic device can be used by substituting with other batteries by a power management circuit. In addition, even if one of the small batteries is damaged or the power amount becomes zero, the electronic device can be used by substituting with other batteries by a power management circuit. In addition, even if one of the small batteries is damaged or the power amount becomes zero, the electronic device can be used by substituting with other batteries by a power management circuit.

[0032] When the user drops the electronic device while carrying it, if there is a single large battery, all functions of the electronic device may become unusable due to damage to that battery. When using a plurality of small batteries, even if one of the small batteries is damaged, as long as at least one small battery can be used, some functions can be used. In this way, an electronic device having a plurality of small batteries provided with small batteries for each component can be realized as an electronic device that is difficult to break because it can be partially used even if a part is broken. In this way, an electronic device having a plurality of small batteries provided with small batteries for each component can be realized as an electronic device that is difficult to break because it can be partially used even if a part is broken. In this way, an electronic device having a plurality of small batteries provided with small batteries for each component can be realized as an electronic device that is difficult to break because it can be partially used even if a part is broken. In this way, an electronic device having a plurality of small batteries provided with small batteries for each component can be realized as an electronic device that is difficult to break because it can be partially used even if a part is broken.

[0033] In addition, even if one of the small batteries is damaged or the power amount becomes zero, the electronic device can be used by substituting with other batteries by a power management circuit. In addition, even if one of the small batteries is damaged or the power amount becomes zero, the electronic device can be used by substituting with other batteries by a power management circuit. Even if the power of one of the batteries becomes zero, the power management circuit connects to the other battery and supplies and charges power by wireless charging from the connected transmitter, enabling long-term use to be possible. That is, an electronic device having a power management circuit capable of mutually supplying the power of the batteries to each other can be realized.

[0034] Also, a battery is a device whose deterioration progresses with the number of charging repetitions. By adjusting the number of charging times or appropriately selecting the battery to be used by the power management circuit, the service life of the battery can be extended. Also, the degree of deterioration of the battery is monitored by the power management circuit, and by appropriately selecting the battery used by the power management circuit according to the degree of deterioration of the battery, the service life of the electronic device can also be extended.

[0035] Also, at least one of the plurality of small batteries provided in the electronic device is preferably a secondary battery that can be wirelessly charged.

[0036] As the secondary battery, any one or a plurality of lithium-ion secondary batteries such as lithium polymer batteries, lithium-ion capacitors, electric double layer capacitors, redox capacitors can be used. The electronic device has an antenna that receives power wirelessly and control means that supplies the received power to the functional circuit.

[0037] Also, the antenna included in the electronic device constitutes a communication module that realizes a non-contact charging function. The communication module may use a charging method corresponding to a standard such as Qi (chee) or Powermat. Also, when charging, multiple batteries can be charged simultaneously. ​​​​​​​​​It may be controlled to do so. Also, the antenna included in the electronic device may constitute a communication module that realizes a short-range wireless communication function. It may constitute a communication module that realizes it.

[0038] Also, MEMS can be combined with an electronic device in which small batteries are scattered and arranged inside the electronic device. For example, a small battery that supplies a sensor using MEMS and a detection circuit, a small battery that supplies a CPU, and a small battery that supplies a memory that stores data detected by the sensor can be realized. For example, a small battery that supplies a sensor using MEMS and a detection circuit, a small battery that supplies a CPU, and a small battery that supplies a memory that stores data detected by the sensor can be realized. For example, a small battery that supplies a sensor using MEMS and a detection circuit, a small battery that supplies a CPU, and a small battery that supplies a memory that stores data detected by the sensor can be realized. For example, a small battery that supplies a sensor using MEMS and a detection circuit, a small battery that supplies a CPU, and a small battery that supplies a memory that stores data detected by the sensor can be realized.

[0039] Also, when a plurality of types of sensors are mounted on an electronic device, since a battery is provided for each component to be used, the user can selectively mount or detach the sensors he or she wants to use. For example, if a control circuit that can control a pulse sensor, a temperature sensor, a position information detection sensor (such as GPS), an acceleration sensor, and an angular velocity sensor, etc., and a connection part (connection socket) for connecting these are provided in an electronic device worn on the arm, the user can select the sensor according to the function he or she wants to use and connect the sensor to the electronic device. In this case, each sensor has a small battery and a regulator, and the more functions are used, the more small batteries are connected, resulting in an electronic device having a plurality of small batteries. Also, when a plurality of types of sensors are mounted on an electronic device, since a battery is provided for each component to be used, the user can selectively mount or detach the sensors he or she wants to use. For example, if a control circuit that can control a pulse sensor, a temperature sensor, a position information detection sensor (such as GPS), an acceleration sensor, and an angular velocity sensor, etc., and a connection part (connection socket) for connecting these are provided in an electronic device worn on the arm, the user can select the sensor according to the function he or she wants to use and connect the sensor to the electronic device. For example, if a control circuit that can control a pulse sensor, a temperature sensor, a position information detection sensor (such as GPS), an acceleration sensor, and an angular velocity sensor, etc., and a connection part (connection socket) for connecting these are provided in an electronic device worn on the arm, the user can select the sensor according to the function he or she wants to use and connect the sensor to the electronic device. For example, if a control circuit that can control a pulse sensor, a temperature sensor, a position information detection sensor (such as GPS), an acceleration sensor, and an angular velocity sensor, etc., and a connection part (connection socket) for connecting these are provided in an electronic device worn on the arm, the user can select the sensor according to the function he or she wants to use and connect the sensor to the electronic device. For example, if a control circuit that can control a pulse sensor, a temperature sensor, a position information detection sensor (such as GPS), an acceleration sensor, and an angular velocity sensor, etc., and a connection part (connection socket) for connecting these are provided in an electronic device worn on the arm, the user can select the sensor according to the function he or she wants to use and connect the sensor to the electronic device. For example, if a control circuit that can control a pulse sensor, a temperature sensor, a position information detection sensor (such as GPS), an acceleration sensor, and an angular velocity sensor, etc., and a connection part (connection socket) for connecting these are provided in an electronic device worn on the arm, the user can select the sensor according to the function he or she wants to use and connect the sensor to the electronic device. In this case, each sensor has a small battery and a regulator, and the more functions are used, the more small batteries are connected, resulting in an electronic device having a plurality of small batteries. In this case, each sensor has a small battery and a regulator, and the more functions are used, the more small batteries are connected, resulting in an electronic device having a plurality of small batteries.

[0040] Also, when a transistor using an oxide semiconductor layer is used as the transistor used for the regulator (also called an OS transistor), since the off-current is small, power saving can be achieved. In particular, a regulator (DC-DC converter) configured with an OS transistor can operate even at a high temperature of 150°C or higher. Therefore, such a DC-DC Also, when a transistor using an oxide semiconductor layer is used as the transistor used for the regulator (also called an OS transistor), since the off-current is small, power saving can be achieved. In particular, a regulator (DC-DC converter) configured with an OS transistor can operate even at a high temperature of 150°C or higher. Also, when a transistor using an oxide semiconductor layer is used as the transistor used for the regulator (also called an OS transistor), since the off-current is small, power saving can be achieved. In particular, a regulator (DC-DC converter) configured with an OS transistor can operate even at a high temperature of 150°C or higher. In particular, a regulator (DC-DC converter) configured with an OS transistor can operate even at a high temperature of 150°C or higher. The converter is suitable for electronic devices whose temperature is likely to rise during operation.

[0041] As the oxide semiconductor used for the oxide semiconductor layer that becomes the channel formation region of the OS transistor it is preferably at least indium (In) or zinc (Zn). In particular, In and Zn are preferably included. In addition to these, it preferably has a stabilizer that strongly binds oxygen. As the stabilizer, gallium (Ga), tin (S n), zirconium (Zr), hafnium (Hf), and aluminum (Al) may have at least any one of them.

[0042] Also, as other stabilizers, lanthanum (La), cerium ( Ce), praseodymium (Pr), neodymium (Nd), samarium (Sm), europium (Eu), gadolinium (Gd), terbium (Tb), dysprosium (Dy), hol mium (Ho), erbium (Er), thulium (Tm), ytterbium (Yb), lut etium (Lu) may have any one or more of them.

[0043] The oxide semiconductor layer of the OS transistor can be formed from the following oxides. For example , indium oxide, tin oxide, zinc oxide, In-Zn-based oxide, Sn-Zn-based oxide, A l-Zn-based oxide, Zn-Mg-based oxide, Sn-Mg-based oxide, In-Mg-based oxide, I n-Ga-based oxide, In-Ga-Zn-based oxide (also denoted as IGZO), In-Al- Zn-based oxide, In-Sn-Zn-based oxide, Sn-Ga-Zn-based oxide, Al-Ga-Z n-based oxide, Sn-Al-Zn-based oxide, In-Hf-Zn-based oxide, In-Zr-Zn Oxides, In-Ti-Zn oxides, In-Sc-Zn oxides, In-Y-Zn oxides, In-La-Zn oxides, In-Ce-Zn oxides, In-Pr-Zn oxides, In-Nd-Zn oxides, In-Sm-Zn oxides, In-Eu-Zn oxides, In-Gd-Zn oxides, In-Tb-Zn oxides, In-Dy-Zn oxides, In-Ho-Zn oxides, In-Er-Zn oxides, In-Tm-Zn oxides, I n-Yb-Zn oxides, In-Lu-Zn oxides, In-Sn-Ga-Zn oxides In-Hf-Ga-Zn oxides, In-Al-Ga-Zn oxides, In-Sn-A l-Zn oxides, In-Sn-Hf-Zn oxides, In-Hf-Al-Zn oxides etc. exist.

[0044] For example, In-Ga-Zn oxides with an atomic ratio of In:Ga:Zn = 1:1:1, In:Ga:Zn = 3:1:2, or In :Ga:Zn = 2:1:3 and oxides in the vicinity of their compositions may be used.

[0045] When the oxide semiconductor film constituting the channel formation region contains a large amount of hydrogen, by binding with the oxide semiconductor, a part of the hydrogen becomes a donor and generates electrons as carriers. As a result, the threshold voltage of the transistor shifts in the negative direction. Therefore, after the formation of the oxide semiconductor film, a dehydration treatment (dehydrogenation treatment) is performed to remove hydrogen or moisture from the oxide semiconductor film and purify it to a high purity so that it contains as few impurities as possible. is preferable.

[0046] Note that by the dehydration treatment (dehydrogenation treatment) of the oxide semiconductor film, acid ​It may decrease. Therefore, a process of adding oxygen to the oxide semiconductor film is performed to compensate for the increased oxygen deficiency caused by the dehydration treatment (dehydrogenation treatment) of the oxide semiconductor film. This is preferable. In this specification and the like, the case of supplying oxygen to the oxide semiconductor film may be referred to as an oxygen addition treatment, or the case of making the oxygen contained in the oxide semiconductor film more than the stoichiometric composition may be referred to as a peroxygenation treatment. As described above, by removing hydrogen or moisture from the oxide semiconductor film by dehydration treatment (dehydrogenation treatment) and compensating for the oxygen deficiency by oxygen addition treatment, an oxide semiconductor film that is i-type (intrinsic) or substantially i-type approaching i-type without limit can be obtained. Note that substantially intrinsic means that carriers derived from donors in the oxide semiconductor film are extremely few (close to zero), and the carrier density is 1×10 / cm or less, 1×10

[0047] / cm or less, 1×10 / cm or less, 1×10 17 / cm 3 or less, 16 1×10 3 / cm or less, 1×10 15 / cm 3 or less, 1×10 14 / cm 3 or less, 1×10 13 / cm 3 or less, 8 ×10 11 / cm 3 less than, 1×10 11 / cm 3 less than. The lower limit value of the carrier density is 1×10 / cm -9 or more. 3

[0048] In addition, as described above, a transistor including an oxide semiconductor film that is i-type or substantially i-type can achieve extremely excellent off-current characteristics. For example, a transistor using an oxide semiconductor film ​When the transistor is in the off state, the drain current at room temperature (about 25 °C) is 1×10 -18 A or less , preferably 1×10 -21 A or less, more preferably 1×10 -24 A or less, or 1×10 A or less at 85 -15 °C, preferably 1×10 -18 A or less, more preferably 1×1 0 -21 A or less. Note that when the transistor is in the off state, in the case of an n-channel type transistor, it means a state where the gate voltage is sufficiently smaller than the threshold voltage. Specifically , if the gate voltage is 1 V or more, 2 V or more, or 3 V or more smaller than the threshold voltage, the transist or is in the off state.

[0049] In addition, the oxide semiconductor to be formed may have, for example, a non-single crystal structure. The oxide semiconductor may have, for example CAAC. Note that an oxide semiconductor having CAAC is referred to as CAAC-OS (C Axis Aligned Crystalline Oxide Semico nductor). CAAC-OS may have, for example, a plurality of crystal portions, and in the plurality of crystal portions, the c-axis may be aligned in a direction parallel to the normal vector of the formed surface or the normal vector of the surface .

[0050] In addition, a battery is provided for each component used in the electronic device, and an electronic device having a plurality of power sources also has features in the operation system. For example, the operation system has a first battery, a second battery, a third battery, and a control unit for managing these batteries , and can perform charging simultaneously using wireless communication. In addition, the operati on system has at least a plurality of power sources (such as secondary batteries) and a control unit such as a CPU has, and manages the power of a plurality of power supplies by a control unit. Also, the control unit of the electronic device is not limited to one, and for example, the same number as the number of the plurality of power supplies may be provided. For example, the same number as the number of the plurality of power supplies may be provided.

[0051] Also, the operation system of the electronic device having a plurality of power supplies includes a first battery, a second battery, a third battery, and a power management circuit that manages the first to third batteries, and the first battery supplies power to the second battery or the third battery wirelessly. It is an operation system. The power management circuit monitors the power amount of each battery, and can appropriately perform automatically or by the user's operation to supply power wirelessly from one battery to another battery for charging. For example, the first battery supplies power to the second battery or the third battery wirelessly. It is an operation system. The power management circuit monitors the power amount of each battery, and can appropriately perform automatically or by the user's operation to supply power wirelessly from one battery to another battery for charging. The power management circuit monitors the power amount of each battery, and can appropriately perform automatically or by the user's operation to supply power wirelessly from one battery to another battery for charging. The power management circuit monitors the power amount of each battery, and can appropriately perform automatically or by the user's operation to supply power wirelessly from one battery to another battery for charging. The power management circuit monitors the power amount of each battery, and can appropriately perform automatically or by the user's operation to supply power wirelessly from one battery to another battery for charging.

Effect of the Invention

[0052] An electronic device having a plurality of batteries and a power management circuit capable of mutually supplying the power of the batteries to each other can be realized. In this case, by replacing one of the plurality of batteries, charging can be performed without replacing the other batteries. Also, after charging one of the plurality of batteries with external wireless charging, the external charging is stopped by the power management circuit, and all the batteries can be fully charged by repeating the wireless charging of the other batteries inside the electronic device. An electronic device having a plurality of batteries and a power management circuit capable of mutually supplying the power of the batteries to each other can be realized. In this case, by replacing one of the plurality of batteries, charging can be performed without replacing the other batteries. Also, after charging one of the plurality of batteries with external wireless charging, the external charging is stopped by the power management circuit, and all the batteries can be fully charged by repeating the wireless charging of the other batteries inside the electronic device. An electronic device having a plurality of batteries and a power management circuit capable of mutually supplying the power of the batteries to each other can be realized. In this case, by replacing one of the plurality of batteries, charging can be performed without replacing the other batteries. Also, after charging one of the plurality of batteries with external wireless charging, the external charging is stopped by the power management circuit, and all the batteries can be fully charged by repeating the wireless charging of the other batteries inside the electronic device. After charging one of the plurality of batteries with external wireless charging, the external charging is stopped by the power management circuit, and all the batteries can be fully charged by repeating the wireless charging of the other batteries inside the electronic device. After charging one of the plurality of batteries with external wireless charging, the external charging is stopped by the power management circuit, and all the batteries can be fully charged by repeating the wireless charging of the other batteries inside the electronic device. After charging one of the plurality of batteries with external wireless charging, the external charging is stopped by the power management circuit, and all the batteries can be fully charged by repeating the wireless charging of the other batteries inside the electronic device.

[0053] Power saving can be achieved by providing a battery for each component used in the electronic device and selectively driving only the components to be used by an operation system. Also, an electronic device with a new structure can be realized. Note that the description of these effects does not prevent the existence of other effects. Power saving can be achieved by providing a battery for each component used in the electronic device and selectively driving only the components to be used by an operation system. Also, an electronic device with a new structure can be realized. Note that the description of these effects does not prevent the existence of other effects. Power saving can be achieved by providing a battery for each component used in the electronic device and selectively driving only the components to be used by an operation system. Also, an electronic device with a new structure can be realized. Note that the description of these effects does not prevent the existence of other effects. Note that one aspect of the present invention does not necessarily have all of these effects. Note that Other effects will be obvious from the descriptions in the specification, drawings, claims, etc. and it is possible to extract other effects from the descriptions in the specification, drawings, claims, etc. There is.

Brief Description of the Drawings

[0054]

Figure 1

Figure 2

Figure 3

Figure 4

Figure 5

Figure 6

Figure 7

Figure 8

Figure 9

Mode for Carrying Out the Invention

[0055] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following description, and those skilled in the art can easily understand that its form and details can be variously changed. Also, the present invention is not construed as being limited to the description content of the embodiments shown below. will not be construed.

[0056] (Embodiment 1) In this embodiment, examples of devices such as mobile information terminals will be described below.

[0057] FIG. 1 shows a block diagram of device 110.

[0058] Device 110 according to this embodiment includes a control module 115, a display module 12 1, a communication module 126, and a power management circuit 127. The control module 115 is a controller that controls the entire device 110, communication, and the display of information on the display unit 116. roller.

[0059] The control module 115 includes a CPU 111, a battery 112, a regulator 113, a wireless receiver 114, and a wireless transmitter 128.

[0060] Also, the display module 121 includes a display unit 116, a display drive circuit 119, a battery 117 , a regulator 118, a wireless receiver 120, and a wireless transmitter 129. Also, in FIG. 1 an example where the device 110 has a display unit 116 is shown, but it is not particularly limited, and the display unit 11 6 can be replaced with other functional units, such as a sensor unit.

[0061] Also, the communication module 126 includes a communication circuit 122, a battery 123, a regulator 12 4, a wireless receiver 125, and a wireless transmitter 130.

[0062] Each module has a regulator and a battery respectively. Each regulator uses the power of the connected battery to generate the power or signal required for each functional circuit, and supplies it to each functional circuit. Also, when charging the battery, the regulator can prevent overcharging and the like. prevent. Also, in FIG. 1, one regulator has a wireless receiver and a wireless transmitter Although an example in which the units are connected is shown, the regulator for the wireless reception unit and the regulator for the wireless transmission unit may be connected separately.

[0063] Device 110 can supply the power of each other's batteries to each other by the power management circuit 127. In addition, the power management circuit 127 monitors the power amounts of the batteries 112, 117, and 123, and wirelessly supplies power from one battery to another battery for charging, which can be appropriately executed automatically or by the user's operation.

[0064] Also, device 110 can turn on or off each module independently. An operation system that selectively drives only the modules to be used can reduce the power consumption of device 110. For example, when the user views information on the display unit 116 without using the communication function,

[0065] in the communication module 126, the power supply to the communication circuit 122 is cut off, the battery 123 is turned off and not used, and the display module 121 and the control module 115 are turned on.

[0066] Furthermore, for still images, after the display module 121 and the control module 115 are turned on and a still image is displayed on the display unit 116, even if the control module 115 is turned off while the still image is being displayed, only the display module 121 can be kept turned on to continue displaying the still image. Note that the transistor of the display unit 116 uses an oxide semiconductor layer with low off-current (such as an oxide material containing In, Ga, and Zn), or a memory for each pixel. ​If it has a configuration such that even if the power supply from the battery 117 is cut off after the still image is displayed, it is possible to continue displaying the still image for a certain period of time.

[0067] Also, in this embodiment, an example where the display module 121, the control module 115, and the communication module 126 each have a battery is shown. However, it is not particularly limited to a total of three batteries, and an electronic device having four or more batteries by adding further functional modules and their batteries may also be used.

[0068] Fig. 2 shows an example of an information terminal having four batteries as an example of an electronic device.

[0069] The electronic device 8000 shown in Fig. 2 has a touch panel 8004 connected to an FPC 8003, a display panel 8016 connected to an FPC 8005, a backlight unit 8007, a frame 8009, a printed circuit board 801 0, a CPU 8011, a power management circuit 8116, and batteries 8012a, 8012b, 80 12c, 8012d between an upper cover 8001 and a lower cover 8002.

[0070] The upper cover 8001 and the lower cover 8002 can be appropriately changed in shape and dimensions according to the sizes of the touch panel 8004 and the display panel 8016.

[0071] The touch panel 8004 can be used by superimposing a resistive film type or a capacitive type touch panel on the display panel 8016. Also, it is possible to provide a touch panel function on the counter substrate (sealing substrate) of the display panel 8016. Further, it is also possible to provide an optical sensor in each pixel of the display panel 8 016 to form an optical touch panel. ouch​​​​ The touch panel 8004 is connected via a printed circuit board and an FPC8003, and on the printed circuit board, there are a battery 8012a, a regulator 8021, a transceiver 8119, etc. In this embodiment, for simplicity, the transceiver 8119 is shown as one unit in the figure, but it is actually separated into a transmitter and a receiver, and they may have some common circuits and wirings. This transceiver 8119 has an antenna for wireless charging or an antenna for wireless transmission. The power supplied wirelessly from the outside is charged to the battery 8012a via the regulator. The touch panel 8004 is mainly driven by using this battery 8012a. Also, according to the instruction of the power management circuit 8116, the power of the battery 8012a is transmitted to other batteries via the transceiver 8119 to charge those

[0072] batteries. The display panel 8016 is an active matrix type liquid crystal display module and is connected via a printed circuit board and an FPC8005. On this printed circuit board, there are a battery 8012b, a regulator 8018, a transceiver 8120, etc. This transceiver 8120 has an antenna for wireless charging or an antenna for wireless transmission. The power supplied wirelessly from the outside is charged to the battery 8012b via the regulator. The display panel 8016 mainly uses this battery 8012b to display an image in the display area. Also, according to the instruction of the power management circuit 8116, the power of

[0073] the battery 8012b is transmitted to other batteries via the transceiver 8120 to charge those The light unit 8007 is connected via a printed circuit board and an FPC. This printed circuit board has a battery 8012c, a regulator 8017, a transceiver 8115, etc. Also, according to the instruction of the power management circuit 8116, the power of the battery 8012c is transmitted to another battery via the transceiver 8115 and that battery is charged.

[0074] In addition, in FIG. 2, although an example is shown in which the light source 8008 is arranged on the backlight unit 8007, it is not limited to this. For example, the light source 8008 may be arranged at the end of the backlight unit 8007, and a light diffusing plate may be further used.

[0075] In addition, the backlight unit 8007 may not be provided in the case of a display device using an organic EL element for the display panel 8016 or a reflective liquid crystal display device. The backlight unit 8007 is provided, for example, in the case of a transmissive liquid crystal display device or a transflective liquid crystal display device.

[0076] In addition, as the display panel 8016, various forms can be used for display elements, display devices which are devices having display elements, light-emitting elements, and light-emitting devices which are devices having light-emitting elements, or various elements can be included. The display element, display device, light-emitting element, or light-emitting device can be, for example, an EL (electroluminescence) element (including organic and inorganic EL elements, organic EL elements, inorganic EL elements), an LED (white LED, red LED, green LED, blue LED, etc.), a transistor (a transistor that emits light according to current), an electron-emitting element, a liquid crystal element, electronic ink, an electrophoretic element, a grating light valve (GLV), a plasma display, etc. Have at least one of a display (PDP), a display element using MEMS (Micro-Electro-Mechanical System), a digital micromirror device (DMD), a DMS (Digital Micro Shutter), a MIRASOL (registered trademark), an IMOD (Interference Modulation) element, a shutter-type MEMS display element, an optical interference-type MEMS display element, an electro-wetting element, a piezoelectric ceramic display, a display element using carbon nanotubes, etc. In addition to these, there may also be a display medium in which contrast, brightness, reflectance, transmittance, etc. change due to electrical or magnetic action. As an example of a display device using an EL element, there is an EL display, etc. As an example of a display device using an electron-emitting element, there is a field emission display (FED) or a SED method flat panel display (SED: Surface-conduction Electron-emitter Display), etc. As an example of a display device using a liquid crystal element, there is a liquid crystal display (transmissive liquid crystal display, transflective liquid crystal display, reflective liquid crystal display, direct-view liquid crystal display, projection liquid crystal display), etc. As an example of a display device using electronic ink, electronic powder fluid (registered trademark), or an electrophoretic element, there is electronic paper, etc. When realizing a transflective liquid crystal display or a reflective liquid crystal display, a part or all of the pixel electrodes may be made to have the function of a reflective electrode. For example, a part or all of the pixel electrodes may be made to have aluminum, silver, etc. Further, in that case, it is also possible to provide a memory circuit such as SRAM under the reflective electrode. Thereby, further power consumption element, a digital micromirror device (DMD), a DMS (Digital Micro Shutter), a MIRASOL (registered trademark), an IMOD (Interference Mod ulation) element, a shutter-type MEMS display element, an optical interference-type MEMS display element, an electro-wetting element, a piezoelectric ceramic display, a display element using carbon nanotube s, etc. In addition to these, there may also be a display medium in which contrast, brightness, reflectance, transmittance, etc. change due to electrical or magnetic action. As an example of a display device using an EL element, there is an EL display, etc. As an example of a display device using an electron-emitting element, there is a field emission display (FED) or a SED method flat panel display (SED: Surface-condu ction Electron-emitter Display), etc. As an example of a display device using a liquid crystal element, there is a liquid crystal display (transmissive liquid crystal display, semi-trans missive liquid crystal display, reflective liquid crystal display, direct-view liquid crystal display, projection liquid crystal display), etc. As an example of a display device using electronic ink, electronic powder fluid (registered trademark), or an electrophoretic element, there is electronic paper, etc. When realizing a semi-transmissive liquid crystal display or a reflective liquid crystal display, a part or all of the pixel electrodes may be made to have the function of a reflective electrode. For example, a part or all of the pixel electrodes may be made to have aluminum, silver, etc. Further, in that case, a memory circuit such as SRAM may be provided under the reflective electrode. This can further reduce power consumption. As an example of a display device using an EL element, there is an EL display, etc. As an example of a display device using an electron-emitting element, there is a field emission display (FED) or a SED method flat panel display (SED: Surface-condu ction Electron-emitter Display), etc. As an example of a display device using a liquid crystal element, there is a liquid crystal display (transmissive liquid crystal display, semi-trans missive liquid crystal display, reflective liquid crystal display, direct-view liquid crystal display, projection liquid crystal display), etc. As an example of a display device using electronic ink, electronic powder fluid (registered trademark), or an electrophoretic element, there is electronic paper, etc. When realizing a semi-transmissive liquid crystal display or a reflective liquid crystal display, a part or all of the pixel electrodes may be made to have the function of a reflective electrode. For example, a part or all of the pixel electrodes may be made to have aluminum, silver, etc. Further, in that case, a memory circuit such as SRAM may be provided under the Power can be reduced.

[0077] In the display panel 8016, an active matrix method having an active element in a pixel, or a passive matrix method having no active element in a pixel can be used.

[0078] In the active matrix method, as the active element (active element, non-linear element), not only a transistor, but also various active elements (active elements, non-linear elements) can be used. For example, MIM (Metal Insulator Metal), or T FD (Thin Film Diode) etc. can also be used. These elements have fewer manufacturing steps, so the manufacturing cost can be reduced or the yield can be improved. . Or, since the size of these elements is small, the aperture ratio can be improved , and low power consumption and high brightness can be achieved.

[0079] As something other than the active matrix method, it is also possible to use a passive matrix type that does not use an active element (active element, non-linear element ). Since no active element (active element, non-linear element) is used, there are fewer manufacturing steps, so the manufacturing cost can be reduced or the yield can be improved. Or, since no active element (active element, non-linear element) is used, the aperture ratio can be improved, and low power consumption, high brightness, etc. can be achieved.

[0080] In addition, when a transistor is used in the display panel 8016 etc., the transistor can be formed using various substrates. The type of substrate is not limited to a specific one. This will not happen. As an example of the substrate, there are semiconductor substrates (e.g., single crystal substrates or silicon substrates), SOI substrates, glass substrates, quartz substrates, plastic substrates, metal substrates, stainless steel substrates, substrates having stainless steel foils, tungsten substrates, substrates having tung sten foils, flexible substrates, laminated films, papers containing fibrous materials , or base films, etc. As an example of the glass substrate, there are barium borosilicate glass , aluminoborosilicate glass, or soda lime glass, etc. Examples of flexible substrates, laminated films, base films, etc. include the following. For example, there are plastics represented by poly ethylene terephthalate (PET), polyethylene naphthalate (PEN), and polyethersulfone (PES). Or, as an example, there are synthetic resins such as acrylic. Or, as an example, there are polypropylene, polyester , polyvinyl fluoride, or polyvinyl chloride, etc. Or, as an example, there are polyamide , polyimide, aramid, epoxy, inorganic vapor deposition films, or papers, etc. In particular, by manufacturing a transistor using a semiconductor substrate, a single crystal substrate, or an SOI substrate, etc., it is possible to manufacture a transistor with less variation in characteristics, size, or shape, high current capacity, and a small size. By configuring a circuit with such a transistor, it is possible to achieve low power consumption of the circuit or high integration of the circuit.

[0081] Also, as the substrate, a flexible substrate may be used, and a transistor may be formed directly on the flexible substrate. Or, a release layer may be provided between the substrate and the transistor. The release layer is on it ​After partially or fully fabricating a semiconductor device, it can be separated from the substrate and transferred onto another substrate. It can be used for this purpose. At this time, the transistor can be transferred onto a substrate with poor heat resistance or a flexible substrate. Note that for the above-described release layer, for example, a configuration of a laminated structure of a tungsten film and a silicon oxide film, or a configuration in which an organic resin film such as polyimide is formed on the substrate can be used. That is, a transistor can be formed using a certain substrate, and then the transistor can be transferred onto another substrate and arranged on the other substrate. As an example of the substrate onto which the transistor is transferred, in addition to the substrate on which the above-described transistor can be formed, a paper substrate, a cellophane substrate, an aramid film substrate, a polyimide film substrate, a stone substrate, a wood substrate, a cloth substrate (including natural fibers (silk, cotton, linen), synthetic fibers (nylon, polyurethane, polyester), or recycled fibers (acetate, cupra, rayon, recycled polyester), etc.), a leather substrate, or a rubber substrate, etc. By using these substrates, it is possible to form a transistor with good characteristics, form a transistor with low power consumption, manufacture a device that is difficult to break, impart heat resistance, reduce weight, or make it thinner.

[0082]

[0083] In addition, in a display panel 8016 or the like, when a transistor is used, transistors with various structures can be used as the transistor. Therefore, there is no limitation on the type of transistor to be used. As an example of the transistor, a transistor having single-crystalline silicon, or a non-single-crystalline semiconductor film typified by amorphous silicon, polycrystalline silicon, microcrystalline (also referred to as microcrystal, nanocrystal, semi-amorphous) silicon, etc. ​ Transistors or the like having such can be used. Alternatively, thin films of these semiconductors can be used, such as thin film transistors (TFTs). When using TFTs, there are various merits. For example, since it can be manufactured at a lower temperature than in the case of single crystal silicon, the manufacturing cost can be reduced, or the size of the manufacturing equipment can be increased. Since the manufacturing equipment can be made larger, it can be manufactured on a large substrate. Therefore, since many display devices can be manufactured simultaneously, it can be manufactured at a low cost. Alternatively, since the manufacturing temperature is low, a substrate with poor heat resistance can be used. Therefore, transistors can be manufactured on a substrate having light transmittance. Alternatively, the transmission of light in a display element can be controlled using transistors on a substrate having light transmittance. Moreover, since the film thickness of the transistor is thin, a part of the film forming the transistor can transmit light. Therefore, the aperture ratio can be improved.

[0084] In addition, when manufacturing polycrystalline silicon, by using a catalyst (such as nickel), the crystallinity can be further improved, and it becomes possible to manufacture transistors with good electrical characteristics. As a result, a gate driver circuit (scan line drive circuit), a source driver circuit (signal line drive circuit ), and a signal processing circuit (signal generation circuit, gamma correction circuit, DA conversion circuit, etc.) can be integrally formed on the substrate.

[0085] In addition, when manufacturing microcrystalline silicon, by using a catalyst (such as nickel), the crystallinity can be further improved, and it becomes possible to manufacture transistors with good electrical characteristics. At this time, the crystallinity can be improved only by applying heat treatment without performing laser irradiation. is also possible. As a result, a part of the source driver circuit (such as an analog switch) and the gate driver circuit (scanning line driver circuit) can be integrally formed on the substrate. Note that when laser irradiation is not performed for crystallization, unevenness in the crystallinity of silicon can be suppressed. Therefore, an image with improved image quality can be displayed. However, it is possible to manufacture polycrystalline silicon or microcrystalline silicon without using a catalyst

[0086] such as nickel. Note that improving the crystallinity of silicon to polycrystalline or microcrystalline, etc., is preferably performed for the entire panel, but is not limited thereto. The crystallinity of silicon may be improved only in a part of the panel region. Selectively improving the crystallinity can be achieved by selectively irradiating laser light, etc. For example, only in the peripheral circuit region which is an area other than the pixel region, only in the regions such as the gate driver circuit and the source driver circuit, or only in the region of a part of the source driver circuit (for example, an analog switch), laser light may be irradiated. As a result, crystallization of silicon can be improved only in the regions where it is necessary to operate the circuit at high speed. Since the pixel region has little need to operate at high speed, the pixel circuit can operate without problems even if the crystallinity is not improved. By doing so, since the number of regions where the crystallinity is improved can be reduced, the manufacturing process can also be shortened. Therefore, the throughput

[0087] is improved and the manufacturing cost can be reduced. Or, since the number of required ) or a compound semiconductor or an oxide semiconductor (e.g., Zn - O, In - Ga - Zn - O, In - Zn - O(I ZO (registered trademark)), In - Sn - O (ITO), Sn - O, Ti - O, Al - Zn - S n - O (AZTO), In - Sn - Zn - O (ITZO (registered trademark)), etc.) can be used. Or, a thin - film transistor obtained by thinning these compound semiconductors or these oxide semiconductors can be used. By these, the manufacturing temperature can be lowered, so that, for example, a transistor can be manufactured at room temperature. As a result, a transistor can be directly formed on a substrate with low heat resistance, such as a plastic substrate or a film substrate. Note that these compound semiconductors or oxide semiconductors can be used not only for the channel portion of the transistor but also for other applications. For example, these compound semiconductors or oxide semiconductors can be used as wiring, a resistance element, a pixel electrode, or a transparent electrode having translucency. Since they can be formed simultaneously with the transistor by film formation or formation, the cost can be reduced. As an example of the transistor, a transistor formed by an ink - jet method or a printing method can be used. By these, manufacturing at room temperature, manufacturing at a low vacuum degree, or manufacturing on a large - sized substrate can be achieved. Therefore, since manufacturing can be performed without using a mask (reticle), the layout of the transistor can be easily changed. Or, since manufacturing can be performed without using a resist, the material cost can be reduced and the number of processes can be

[0088] reduced. Or, since a film can be attached only to a necessary portion, it can be made at a lower cost without wasting materials compared to a manufacturing method of etching after forming a film over the entire surface. Also, since manufacturing can be performed without using a resist, the material cost is reduced and the number of processes can be reduced. Or, since a film can be attached only to a necessary portion, it can be made at a lower cost without wasting materials compared to a manufacturing method of etching after forming a film over the entire surface. Since manufacturing can be performed without using a mask (reticle), the layout of the transistor can be easily changed. Or, since manufacturing can be performed without using a resist, the material cost is reduced and the number of processes can be reduced. Or, since a film can be attached only to a necessary portion, it can be made at a lower cost without wasting materials compared to a manufacturing method of etching after forming a film over the entire surface. Since a film can be attached only to a necessary portion, it can be made at a lower cost without wasting materials compared to a manufacturing method of etching after forming a film over the entire surface.

[0089] Note that, as an example of a transistor, a transistor having an organic semiconductor or a carbon nanotube can be used. By using these, a transistor can be formed on a substrate that can be bent. A device using a transistor having an organic semiconductor or a carbon nanotube can be made resistant to shock. Note that, as an example of a transistor, a transistor having an organic semiconductor or a carbon nanotube can be used. By using these, a transistor can be formed on a substrate that can be bent. A device using a transistor having an organic semiconductor or a carbon nanotube can be made resistant to shock. Note that, as an example of a transistor, a transistor having an organic semiconductor or a carbon nanotube can be used. By using these, a transistor can be formed on a substrate that can be bent. A device using a transistor having an organic semiconductor or a carbon nanotube can be made resistant to shock. Note that, as an example of a transistor, a transistor having an organic semiconductor or a carbon nanotube can be used. By using these, a transistor can be formed on a substrate that can be bent. A device using a transistor having an organic semiconductor or a carbon nanotube can be made resistant to shock.

[0090] Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Note that, in circuits included in the display module 121, the control module 115, the communication module 126, the electronic device 8000, etc., when a transistor is used, variously structured transistors can also be used as the transistor. For example, as the transistor, a MOS transistor, a junction transistor, a bipolar transistor, etc. can be used. By using a MOS transistor as the transistor, the size of the transistor can be reduced. Therefore, a large number of transistors can be mounted. By using a bipolar transistor as the transistor, a large current can be made to flow. Therefore, the circuit can be operated at high speed. Note that a MOS transistor and a bipolar transistor may be formed to be mixed on one substrate. Thus, low power consumption, miniaturization, high-speed operation, etc. can be realized.

[0091] Alternatively, for example, as an example of a transistor, a transistor having a multi-gate structure with two or more gate electrodes can be used. When a multi-gate structure is used, since the channel regions are connected in series, it has a structure in which a plurality of transistors are connected in series. Therefore, Alternatively, for example, as an example of a transistor, a transistor having a multi-gate structure with two or more gate electrodes can be used. When a multi-gate structure is used, since the channel regions are connected in series, it has a structure in which a plurality of transistors are connected in series. Therefore, Alternatively, for example, as an example of a transistor, a transistor having a multi-gate structure with two or more gate electrodes can be used. When a multi-gate structure is used, since the channel regions are connected in series, it has a structure in which a plurality of transistors are connected in series. Therefore, By using a ruthenium gate structure, the off-current can be reduced and the breakdown voltage of the transistor can be improved (reliability can be improved). Alternatively, by using a multi-gate structure, when operating in the saturation region, even if the voltage between the drain and the source changes, the current between the drain and the source does not change much, and a voltage-current characteristic with a flat slope can be obtained. By utilizing the voltage-current characteristic with a flat slope, an ideal current source circuit or an active load with a very high resistance value can be realized. As a result, a differential circuit or a current mirror circuit with good characteristics can be realized.

[0092] As an example of the transistor, a transistor with a structure in which gate electrodes are arranged above and below the channel can be applied. By adopting a structure in which gate electrodes are arranged above and below the channel, a circuit configuration is formed as if a plurality of transistors are connected in parallel. Therefore, since the channel region increases, an increase in the current value can be achieved. Alternatively, by adopting a structure in which gate electrodes are arranged above and below the channel, the depletion layer is likely to be formed, so that the S value can be improved.

[0093] As an example of the transistor, a structure in which a gate electrode is arranged above the channel region, a structure in which a gate electrode is arranged below the channel region, a positive stagger structure, a reverse stagger structure, a structure in which the channel region is divided into a plurality of regions, a structure in which the channel regions are connected in parallel, or a structure in which the channel regions are connected in series can be used. Alternatively, as the transistor, a planar type, a FIN type (fin type), a TRI-GATE type (triple gate type), a top gate type, a bottom gate type, a double gate type (gate electrodes are arranged above and below the channel) ​It can take various configurations such as (where a door is arranged).

[0094] The frame 8009 has a protective function for the display panel 8016. Also, the frame 8009 may have a function as a heat sink. Also, an antenna of any of the receiving units may be built-in therein.

[0095] The control unit has a CPU 8011, a battery 8012d, a regulator 8013, a transceiver 8114, and a signal processing circuit for outputting a video signal and a clock signal on the printed circuit board 8010. Also, it has a power management circuit 8116 on the same printed circuit board 8010 as an example, but it is not particularly limited. The CPU 8011 may have the same function as the power management circuit 8116 and be integrated into one chip. Also, since the power management circuit 8116 monitors and manages a plurality of batteries, a separate power supply for supplying its power may be provided, but in this embodiment the battery 8012d provided on the same printed circuit board 8010 is used as the main power supply. Also, the batteries 8012a, 8012b, 8012c provided on other printed circuit boards have their respective battery levels monitored by the power management circuit 8116 through wireless communication using the transceiver 8114 and can be used as secondary power supplies. For example, when the remaining amount of the battery 8012d decreases, power can be wirelessly transmitted from the batteries 8012a, 8012b, 8012c to the battery 8012d to charge it. Also, during charging from an external source (such as a charger), power can be received simultaneously by each transceiver. Also, wireless charging may not work well depending on how the charger and the electronic device are stacked or placed.

[0096] Also, during charging from an external source (such as a charger), power can be received simultaneously by each transceiver. Also, wireless charging may not work well depending on how the charger and the electronic device are stacked or placed. There may be cases where electricity cannot be generated. Since the electronic device 8000 has a plurality of transmission / reception units, if they are scattered and arranged at various positions, as long as power can be received by any one of the transmission / reception units and one battery can be charged, the power management circuit 8116 can charge one or more other batteries from the charged battery, and as a result, all the batteries can be fully charged. When scattered and arranged at various positions, as long as power can be received by any one of the transmission / reception units and one battery can be charged, the power management circuit 8116 can charge one or more other batteries from the charged battery, and as a result, all the batteries can be fully charged. There may be cases where electricity cannot be generated. Since the electronic device 8000 has a plurality of transmission / reception units, if they are scattered and arranged at various positions, as long as power can be received by any one of the transmission / reception units and one battery can be charged, the power management circuit 8116 can charge one or more other batteries from the charged battery, and as a result, all the batteries can be fully charged. There may be cases where electricity cannot be generated. Since the electronic device 8000 has a plurality of transmission / reception units, if they are scattered and arranged at various positions, as long as power can be received by any one of the transmission / reception units and one battery can be charged, the power management circuit 8116 can charge one or more other batteries from the charged battery, and as a result, all the batteries can be fully charged. There may be cases where electricity cannot be generated. Since the electronic device 8000 has a plurality of transmission / reception units, if they are scattered and arranged at various positions, as long as power can be received by any one of the transmission / reception units and one battery can be charged, the power management circuit 8116 can charge one or more other batteries from the charged battery, and as a result, all the batteries can be fully charged.

[0097] Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided. Since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module that realizes a non-contact charging function is installed. Also, the electronic device 8000 may be equipped with a communication module that realizes a short-range wireless communication function such as a phone. In that case, the communication module may also have a battery structure in the same way. Additionally, other functions may be installed, for example, a sensor (including functions for measuring force, displacement, position, speed, acceleration, angular velocity, rotational speed, distance, light, liquid, magnetism, temperature, chemical substances, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor, or infrared rays), a microphone, etc. may be provided.

[0098] For each functional circuit, one printed circuit board is used, and a regulator and a battery that can provide an optimal output according to each functional circuit are installed. Moreover, since the distance between the battery and the functional circuit is close and the wiring for routing can be shortened, power consumption can be reduced. For each functional circuit, one printed circuit board is used, and a regulator and a battery that can provide an optimal output according to each functional circuit are installed. Moreover, since the distance between the battery and the functional circuit is close and the wiring for routing can be shortened, power consumption can be reduced. For each functional circuit, one printed circuit board is used, and a regulator and a battery that can provide an optimal output according to each functional circuit are installed. Moreover, since the distance between the battery and the functional circuit is close and the wiring for routing can be shortened, power consumption can be reduced. For each functional circuit, one printed circuit board is used, and a regulator and a battery that can provide an optimal output according to each functional circuit are installed. Moreover, since the distance between the battery and the functional circuit is close and the wiring for routing can be shortened, power consumption can be reduced.

[0099] Also, in FIG. 2, an example is shown where one printed circuit board is used for each function and a total of multiple printed circuit boards are used, but it is not particularly limited. All the functional circuits may be provided on one printed circuit board. Also, in FIG. 2, an example is shown where one printed circuit board is used for each function and a total of multiple printed circuit boards are used, but it is not particularly limited. All the functional circuits may be provided on one printed circuit board. , in that case, a plurality of batteries will be provided on a single printed circuit board. Also, a plurality of functions may be integrated on one printed circuit board, and in that case, the batteries may also be integrated into one as well. Further, each of the display panel 8016, touch panel 8004, and backlight unit 8007 in FIG. 2 is configured to be electrically connected to the control unit by a wiring cord or FPC not shown in FIG. 2. Also, since the electronic device 8000 in FIG. 2 has a transmission / reception circuit and the like on each printed circuit board, it can be driven without connecting each of them by wiring or the like. By performing wireless communication or wireless charging between the respective circuits, the routing of the wiring cord and the design of connectors and the like can be simplified, and the degree of freedom in design can be increased . . . .

[0100] Furthermore, the electronic device 8000 may be provided with a slot for inserting a SIM card, a connector portion for connecting a USB device such as a USB memory, and the like.

[0101] As described above, the electronic device 8000 is an electronic device that has a battery for each unit (module, function) used in the electronic device and has a plurality of power supplies managed by the power management circuit 8116. As the electronic device 8000 having a plurality of power supplies, power saving can be achieved by an operating system that selectively drives the functions to be used. Also, the power management circuit 8116 monitors the power amount of each battery and can appropriately execute automatically or by the user's operation the wireless supply of power from one battery to another battery for charging. From among the plurality of batteries in the electronic device, to the components to be used Appropriately select the corresponding battery and adjust the power of each battery through an operation system to extend the available time of the functions to be used.

[0102] In addition, each battery has a communication module that realizes a non-contact charging function. It can be controlled to charge multiple batteries simultaneously. Also, since it has a transceiver section and the power amount can be adjusted by a power management circuit, the power of each other's batteries can be mutually supplied.

[0103] In addition, although this embodiment shows an example of an electronic device 8000 with a box-shaped outer shape, it is not particularly limited. It can also be an electronic device with a complex outer shape. When it is an electronic device with a complex outer shape, by appropriately arranging a plurality of small batteries at predetermined locations, the degree of freedom in the design of the electronic device can be increased.

[0104] (Embodiment 2) In Embodiment 1, a battery, a wireless reception section, and a CPU are mounted on one printed circuit board, showing an example of an electronic device having a plurality of printed circuit boards. In this embodiment, a regulator 1188 is also fabricated on the substrate 1190 on which the CPU is fabricated, and an example of connecting a smaller battery through the CPU and the regulator 1188 is shown. The regulator 1188 generates and supplies the power or signals required for each functional circuit from the connected power source (such as a battery). Figure 3 shows an example of forming a regulator 1188 and a CPU on the substrate 1190.

[0105] The CPU will be described below.

[0106] Figure 3(A) is a block diagram showing the specific configuration of the CPU. The CPU shown in Figure 3(A) has, on the substrate 1190, an ALU 1191 (ALU: Arithmetic logic unit, arithmetic circuit), an ALU controller 1192, an instruction decoder 11 93, an interrupt controller 1194, a timing controller 1195, registers 1196, a register controller 1197, a bus interface 1198 (Bus I / F), a rewritable ROM 1199, and a ROM interface 1189 (ROM I / F). The substrate 1190 uses a semiconductor substrate, an SOI substrate, a glass substrate, etc. The ROM 1199 and the ROM interface 1189 may be provided on a separate chip Of course, the CPU shown in Figure 3(A) is only an example showing a simplified configuration of it, and an actual CPU has various configurations depending on its application.

[0107] Instructions input to the CPU via the bus interface 1198 are input to the instruction decoder 1193, decoded, and then input to the ALU controller 1192, the inter rupt controller 1194, the register controller 1197, and the timing controller 1195.

[0108] The ALU controller 1192, the interrupt controller 1194, the register controller 1197, and the timing controller 1195 perform various controls based on the decoded instructions. Specifically, the ALU controller 1192 generates signals for controlling the operation of the ALU 1191 . Also, the interrupt controller 1194 is the program of the CPU ​During the execution of the program, interrupt requests from external input / output devices and peripheral circuits are judged based on their priorities and mask states and processed. The register controller 1197 generates addresses of the register 1196 and reads from and writes to the register 1196 according to the state of the CPU.

[0109] Also, the timing controller 1195 generates signals for controlling the operation timing of the ALU 1191, the ALU controller 119 2, the instruction decoder 1193, the interrupt controller 1194, and the register controller 1197. For example, the timing controller 1195 includes an internal clock generation unit that generates an internal clock signal CLK2 based on the reference clock signal CLK1, and supplies the internal clock signal CLK2 to the above-mentioned various circuits.

[0110] In the CPU shown in Fig. 3(A), the register 1196 is provided with memory cells. Memory cells of the register 1196 can use memory cells including transistors using an oxide semiconductor layer.

[0111] In the CPU shown in Fig. 3(A), the register controller 1197 selects the holding operation in the register 1196 according to an instruction from the ALU 1191 or the like. That is, in the memory cells included in the register 1196, it is selected whether to hold data by a flip-flop or hold data by a capacitive element. When holding data by a flip-flop is selected, the supply of the power supply voltage to the memory cells in the register 1196 is performed. When holding data in the capacitive element is selected, data is written to the capacitive element. ​​​​​​​​​Replacement is performed, and the supply of the power supply voltage to the memory cells in the register 1196 can be stopped. It is possible.

[0112] Regarding power supply stop, as shown in FIG. 3(B) or FIG. 3(C), a switching element is provided between the memory cell group and the nodes to which the power supply potential VDD or the power supply potential VSS is applied. It can be performed by doing so. The circuits of FIGS. 3(B) and 3(C) will be described below. Regarding power supply stop, as shown in FIG. 3(B) or FIG. 3(C), a switching element is provided between the memory cell group and the nodes to which the power supply potential VDD or the power supply potential VSS is applied. It can be performed by doing so. The circuits of FIGS. 3(B) and 3(C) will be described below. Regarding power supply stop, as shown in FIG. 3(B) or FIG. 3(C), a switching element is provided between the memory cell group and the nodes to which the power supply potential VDD or the power supply potential VSS is applied. It can be performed by doing so. The circuits of FIGS. 3(B) and 3(C) will be described below.

[0113] In FIGS. 3(B) and 3(C), an example of the configuration of a memory circuit including a transistor using an oxide semiconductor layer is shown for the switching element that controls the supply of the power supply potential to the memory cell. In FIGS. 3(B) and 3(C), an example of the configuration of a memory circuit including a transistor using an oxide semiconductor layer is shown for the switching element that controls the supply of the power supply potential to the memory cell.

[0114] The memory device shown in FIG. 3(B) has a switching element 1141 and a memory cell group 1143 having a plurality of memory cells 1142. Each memory cell 1142 included in the memory cell group 1143 is supplied with a high-level power supply potential VDD via the switching element 1141. Further, each memory cell 1142 included in the memory cell group 1143 is given the potential of the signal IN and the potential of the low-level power supply potential VSS. The memory device shown in FIG. 3(B) has a switching element 1141 and a memory cell group 1143 having a plurality of memory cells 1142. Each memory cell 1142 included in the memory cell group 1143 is supplied with a high-level power supply potential VDD via the switching element 1141. Further, each memory cell 1142 included in the memory cell group 1143 is given the potential of the signal IN and the potential of the low-level power supply potential VSS. The memory device shown in FIG. 3(B) has a switching element 1141 and a memory cell group 1143 having a plurality of memory cells 1142. Each memory cell 1142 included in the memory cell group 1143 is supplied with a high-level power supply potential VDD via the switching element 1141. Further, each memory cell 1142 included in the memory cell group 1143 is given the potential of the signal IN and the potential of the low-level power supply potential VSS. The memory device shown in FIG. 3(B) has a switching element 1141 and a memory cell group 1143 having a plurality of memory cells 1142. Each memory cell 1142 included in the memory cell group 1143 is supplied with a high-level power supply potential VDD via the switching element 1141. Further, each memory cell 1142 included in the memory cell group 1143 is given the potential of the signal IN and the potential of the low-level power supply potential VSS. The memory device shown in FIG. 3(B) has a switching element 1141 and a memory cell group 1143 having a plurality of memory cells 1142. Each memory cell 1142 included in the memory cell group 1143 is supplied with a high-level power supply potential VDD via the switching element 1141. Further, each memory cell 1142 included in the memory cell group 1143 is given the potential of the signal IN and the potential of the low-level power supply potential VSS.

[0115] In FIG. 3(B), a transistor using an oxide semiconductor layer is used as the switching element 1141, and the switching of the transistor is controlled by a signal SigA applied to its gate electrode layer. In FIG. 3(B), a transistor using an oxide semiconductor layer is used as the switching element 1141, and the switching of the transistor is controlled by a signal SigA applied to its gate electrode layer. In FIG. 3(B), a transistor using an oxide semiconductor layer is used as the switching element 1141, and the switching of the transistor is controlled by a signal SigA applied to its gate electrode layer.

[0116] In FIG. 3(B), a configuration in which the switching element 1141 has only one transistor is shown, but it is not particularly limited, and it may have a plurality of transistors. When the switching element 1141 has a plurality of transistors that function as switching elements, In FIG. 3(B), a configuration in which the switching element 1141 has only one transistor is shown, but it is not particularly limited, and it may have a plurality of transistors. When the switching element 1141 has a plurality of transistors that function as switching elements, In FIG. 3(B), a configuration in which the switching element 1141 has only one transistor is shown, but it is not particularly limited, and it may have a plurality of transistors. When the switching element 1141 has a plurality of transistors that function as switching elements, The plurality of transistors may be connected in parallel or in series. Moreover, they may be connected in a combination of series and parallel.

[0117] Also, in FIG. 3(B), the supply of the high-level power supply potential VDD to each memory cell 1142 included in the memory cell group 1143 is controlled by the switching element 1141. However, the supply of the low-level power supply potential VSS may be controlled by the switching element 1141.

[0118] Further, FIG. 3(C) shows an example of a storage device in which the low-level power supply potential VSS is supplied to each memory cell 1142 included in the memory cell group 1143 via the switching element 1141. The supply of the low-level power supply potential VSS to each memory cell 1142 included in the memory cell group 1143 can be controlled by the switching element 1141.

[0119] By providing a switching element between the memory cell group and a node to which the power supply potential VDD or the power supply potential VSS is applied, it is possible to hold data even when the operation of the CPU is temporarily stopped and the supply of the power supply voltage is stopped, and the power consumption can be reduced. Specifically, for example, even while a user of a personal computer has stopped inputting information to an input device such as a keyboard, the operation of the CPU can be stopped, thereby reducing the power consumption.

[0120] Here, the CPU has been described as an example, but a DSP (Digital Signal Processor), a custom LSI, an FPGA (Field Programmable ​​​​​​​​​​​It is also applicable to LSIs such as e Gate Array).

[0121] This embodiment can be freely combined with other embodiments.

[0122] (Embodiment 3) In this embodiment, an electronic device according to an aspect of the present invention will be described with reference to FIG. 4.

[0123] FIGS. 4(A) to 4(F) are diagrams showing electronic devices. These electronic devices include a housing 5 000, a display unit 5001, a speaker 5003, an LED lamp 5004, an operation key 5005 (including a power switch or an operation switch), a connection terminal 5006, a sensor 5007 (force, displacement, position, speed, acceleration, angular velocity, rotation speed, distance, light, liquid, magnetism, temperature, chemical substance, sound voice, time, hardness, electric field, current, voltage, power, radiation, flow rate, humidity, gradient, vibration, odor or including a function of measuring infrared rays), a microphone 5008, etc. can be included. can have.

[0124] FIG. 4(A) is a mobile computer, and in addition to the above-described components, it can have a switch 5009, an infrared port 5010, etc. FIG. 4(B) is a portable image playback device equipped with a recording medium (for example, a DVD playback device), and in addition to the above-described components, it can have a second display unit 5002, a recording medium reading unit 5011, etc. FIG. 4(C) is a goggle-type display, and in addition to the above-described components, it can have a second display unit 5002, a support unit 5012, earphones 5013, etc. FIG. 4(D) is a portable game machine, and in addition to the above-described components it can have a recording medium reading unit 5011, etc. FIG. 4(E) is a television receiver and in addition to the above, it can have a recording medium reading unit 5011, etc. FIG. 4(E) is a television receiver A digital camera with functions, and in addition to those described above, it can have an antenna 5014, a shutter button 5015, an imaging unit 5016, etc. FIG. 4(F) shows a portable gaming machine, and in addition to those described above, it can have a second display unit 5002, a recording medium reading unit 5011, etc. The electronic devices shown in FIGS. 4(A) to 4(F) can have various functions. For example, functions such as displaying various information (still images, moving images, text images, etc.) on the display unit, a touch panel function, a function of displaying a calendar, date, or time, etc., a function of controlling processing by various software (programs), a wireless communication function, a function of connecting to various computer networks using the wireless communication function, a function of transmitting or receiving various data using the wireless communication function, a function of reading out a program or data recorded on a recording medium and displaying it on the display unit, etc. can be provided. Further, in an electronic device having a plurality of display units,

[0125] a function of mainly displaying image information on one display unit and mainly displaying character information on another display unit, or a function of displaying a three-dimensional image by displaying images with consideration of parallax on a plurality of display units, etc. can be provided. Further, in an electronic device having an imaging unit, functions such as a function of taking a still image, a function of taking a moving image, a function of automatically or manually correcting the taken image, a function of saving the taken image on a recording medium (external or built into the camera), a function of displaying the taken image on the display unit, etc. can be provided. Note that the functions that the electronic devices shown in FIGS. 4(A) to 4(F) can have are not limited to these, and they can have various functions.

[0126]

[0126]

[0126] The electronic device described in this embodiment incorporates a plurality of batteries and can be wirelessly charged. It is characterized by having a wireless receiving unit. It also has a power management circuit (including a power monitoring circuit) for managing the plurality of batteries. Further, it has a transmission unit and a receiving unit for performing wireless charging between different batteries, and the power management circuit selectively charges or uses the battery as needed.

[0127] Also, the usage examples of the electronic device will be described with reference to FIGS. 5(A) and 5(B).

[0128] FIG. 5(A) shows an example of operating an information terminal inside a moving body such as a vehicle.

[0129] 5103 is a steering wheel and has an antenna inside. Power can be supplied from the antenna inside the steering wheel 5103 to the electronic device 5100. The electronic device 5100 has a plurality of batteries, and at least one of them is charged by wireless charging. A fixture may be provided on the steering wheel 5103 to fix the electronic device 5100. If the electronic device 5100 is fixed to the steering wheel 510 3, it is possible to make a hands-free call or a videophone call. Also, voice authentication can be performed using a microphone provided in the electronic device 5100, and the vehicle can be operated by the voice of the operator. For example, the electronic device 5100 can be operated while the vehicle is stopped to display the position information on the display unit 5102. Also, information not displayed on the vehicle display unit 5101, such as engine speed, steering wheel angle, temperature, tire air pressure, etc., may be displayed on the display unit 5102. The display unit 5 102 has a touch input function. Also, one or more cameras for photographing the outside of the vehicle can be used.

[0130] For example, the electronic device 5100 can be operated while the vehicle is stopped to display the position information on the display unit 5102. Also, information not displayed on the vehicle display unit 5101, such as engine speed, steering wheel angle, temperature, tire air pressure, etc., may be displayed on the display unit 5102. The display unit 5 102 has a touch input function. Also, one or more cameras for photographing the outside of the vehicle can be used. 102 has a touch input function. Also, one or more cameras for photographing the outside of the vehicle can be used. ​It is also possible to display the state outside the vehicle on the display unit 5102, for example, it can also be used as a rear monitor. In addition, in order to prevent drowsy driving, information such as the driving speed is received wirelessly from the vehicle, and while driving while monitoring the driving speed, the driver is photographed from the electronic device 5100, and if the eyes are closed for a long time, the electronic device 5100 is vibrated, or a warning sound or a setting to play music can be appropriately selected by the driver. Also, when the vehicle stops, the photographing of the driver is stopped to save power, and furthermore, the battery of the electronic device 5100 can be wirelessly charged while stopped. In a moving body such as a vehicle, various uses are conceivable as described above, and the electronic device 5100 is desirably built-in with many sensors and a plurality of antennas in order to have its various functions. A moving body such as a vehicle has a power source but has limitations, and considering the power for driving the moving body, it is preferable to keep the power used by the electronic device 5100 as low as possible. Especially for electric vehicles, etc., the driving range may be shortened due to the power consumption of the electronic device 5100. Even if the electronic device 5100 has various functions, it is rare to use all functions at the same time, and it is often the case that only one or two functions are used as needed.

[0131] When providing various functions to the electronic device 5100 with a battery prepared for each function and having a plurality of batteries, power saving can be achieved by turning on only the functions to be used and supplying power from the corresponding batteries for each function. Furthermore, among the plurality of batteries, the battery corresponding to the stopped function can be wirelessly charged from the antenna provided in the vehicle.

[0132] ​​​​​​​​​​​ In addition, FIG. 5(B) shows an example of operating an information terminal inside an aircraft or the like. Inside an aircraft or the like the available time for using an individual's information terminal may be restricted, and in the case of a long-haul flight, it is desirable that the information terminal installed in the aircraft can be used.

[0133] The electronic device 5200 has a display unit 5202 for displaying videos such as movies, games, and advertisements, and is an information terminal that can acquire the current flight position, remaining arrival time, etc. in real time through a communication function. The display unit 5202 also has a touch input function.

[0134] Also, the electronic device 5200 is fitted into a recess provided in the seat 5201, and an antenna installation part 5203 is provided at a position overlapping with the electronic device 5200 so that wireless charging can be performed while it is fitted. Further, when the user wants to contact the crew due to feeling unwell or the like, the electronic device 5200 can also function as a telephone or communication tool. If the electronic device 5200 has a translation function or the like, even a passenger who does not speak the same language as the crew can communicate using the display unit 5202 of the electronic device 5200. Also, passengers sitting next to each other who speak different languages can communicate using the display unit 5202 of the electronic device 5200. Further, for example, while the passenger is sleeping, the display unit 5202 can also function as a message board by continuously displaying "Please do not wake me up" in English.

[0135] The electronic device 5200 has a plurality of batteries for each function, and is an electronic device having a plurality of batteries. It turns on only the function that it wants to use and turns off the functions that are not in use. ​​​Power saving can be achieved. Further, among a plurality of batteries, the battery corresponding to the stopped function can be wirelessly charged from the antenna installation unit 5203. The battery can be wirelessly charged from the antenna installation unit 5203.

[0136] Also, inside the aircraft, it is difficult to bring in dangerous goods. The electronic device 5200 having a plurality of small batteries has high safety. Even if one battery explodes, since the size is small, damage can be minimized. Also, due to a failure, explosion, or destruction, even if one battery becomes unusable, some of the functions of the electronic device 5200 can be used by using other batteries. The electronic device 5200 having a plurality of small batteries has high safety. Even if one battery explodes, since the size is small, damage can be minimized. Also, due to a failure, explosion, or destruction, even if one battery becomes unusable, some of the functions of the electronic device 5200 can be used by using other batteries. Also, due to a failure, explosion, or destruction, even if one battery becomes unusable, some of the functions of the electronic device 5200 can be used by using other batteries. Also, due to a failure, explosion, or destruction, even if one battery becomes unusable, some of the functions of the electronic device 5200 can be used by using other batteries. 00 can be used.

[0137] Also, when there is an abnormality in the power system of the aircraft, the plurality of batteries of the electronic devices 5200 respectively provided in a plurality of seats may be designed to be usable as emergency power sources. Since all the electronic devices 5200 respectively provided in a plurality of seats are the same product and have the same design, a system may be constructed so that they can be connected in series as an emergency power source. 00 may be designed to be usable as emergency power sources. Since all the electronic devices 5200 respectively provided in a plurality of seats are the same product and have the same design, a system may be constructed so that they can be connected in series as an emergency power source. Since all the electronic devices 5200 respectively provided in a plurality of seats are the same product and have the same design, a system may be constructed so that they can be connected in series as an emergency power source. a system may be constructed so that they can be connected in series as an emergency power source.

[0138] As the plurality of small batteries included in the electronic device 5200, any one or a plurality of lithium-ion secondary batteries such as lithium polymer batteries, lithium-ion capacitors, electric double layer capacitors, and redox capacitors can be used. As the plurality of small batteries included in the electronic device 5200, any one or a plurality of lithium-ion secondary batteries such as lithium polymer batteries, lithium-ion capacitors, electric double layer capacitors, and redox capacitors can be used. any one or a plurality of lithium-ion secondary batteries such as lithium polymer batteries, lithium-ion capacitors, electric double layer capacitors, and redox capacitors can be used.

[0139] The configuration shown in this embodiment can be used in appropriate combination with the configuration shown in other embodiments. can be used.

[0140] (Embodiment 4) In this embodiment, an example of an artificial organ is shown.

[0141] FIG. 6 is a cross-sectional schematic view showing an example of a pacemaker.

[0142] The pacemaker body 5300 includes batteries 5301a, 5301b, a regulator, a power management circuit 5307, a control circuit, an antenna 5304, and wires 5302 to the right atrium and 5303 to the right ventricle.

[0143] The pacemaker body 5300 is surgically implanted in the body, and the two wires pass through the subclavian vein 5305 and the superior vena cava 5306 of the human body so that one wire tip is placed in the right ventricle and the other wire tip is placed in the right atrium.

[0144] Also, power can be received by the antenna 5304, and the power is used to charge the multiple batteries 5301a, 5 301b, which can reduce the frequency of pacemaker replacement. Since the pacemaker body 5300 has multiple batteries, it has high safety. Even if one fails, the other can still function, so it also functions as an auxiliary power source. Also, the power management circuit 5307 uses one battery 5301a as an emergency power source and mainly uses the other battery 5301b. If the battery 5301b is damaged or depleted for some reason, it is desirable to be able to use the battery 5301a to send an emergency signal to the outside (for example, the user's information terminal, a nearby medical institution). Since a pacemaker may cause great harm to the user if the battery is damaged or depleted for some reason, having an emergency power source is useful. Also, if the batteries provided in the pacemaker are further divided into multiple thin batteries, they can be mounted on the printed circuit board where the control circuit including the CPU, etc. is provided, which can miniaturize the pacemaker body 5300 and the pacemaker body ​​​The thickness of 5300 can be reduced.

[0145] Also, separately from the antenna 5304 that can receive power, it may have an antenna that can transmit physiological signals. For example, a system for monitoring heart activity may be configured so that physiological signals such as pulse, respiratory rate, heart rate, and body temperature can be confirmed by an external monitoring device.

[0146] According to this embodiment, if miniaturization and thinning can be achieved, the convex part generated at the place where the pacemaker body 5300 is implanted can be made to have a size that is not conspicuous.

[0147] Note that the method of installing this pacemaker is also an example, and it may take various forms according to heart diseases.

[0148] Also, this embodiment is not limited to a pacemaker. There is a cochlear implant as an artificial organ that is more widespread than a pacemaker. A cochlear implant is a device that converts sound into an electrical signal and directly stimulates the auditory nerve with a stimulating device inserted into the cochlea.

[0149] A cochlear implant is composed of a first device implanted deep in the ear by surgery and a second device that picks up sound with a microphone and sends it to the implanted first device. The first device and the second device are not electrically connected and are a system that communicates wirelessly. The first device has at least an antenna that receives an electrical signal converted from sound and a wire that reaches the cochlea. Also, the second device has at least an audio processing unit for converting sound into an electrical signal and a transmission circuit for transmitting the electrical signal to the first device.

[0150] In this embodiment, by providing a small battery in both the first device and the second device, The size of the cochlear implant can be reduced.

[0151] In addition, cochlear implants are often surgically implanted at a young age, and miniaturization is desired.

[0152] According to this embodiment, if miniaturization of the cochlear implant can be achieved, the protrusions generated at the place where the cochlear implant is implanted can be made inconspicuous in size. can be made to a size that is not conspicuous.

[0153] The configuration shown in this embodiment can be used in appropriate combination with the configurations shown in other embodiments. can be.

[0154] (Embodiment 5) In this embodiment, an example of a wearable electronic device is shown.

[0155] When an electronic device has a complex outer shape, the degree of freedom in the design of the electronic device can be increased by appropriately arranging a plurality of small batteries at predetermined locations. As shown in FIG. 7(A), the electronic device 5400 is cylindrical, and in order to be worn on the human body, the weight can be alleviated by dividing it into a plurality of batteries instead of one battery and arranging them appropriately. Also, when many functions are provided, the battery consumption during standby increases. Therefore, a battery is prepared for each function. When the electronic device 5400 having a plurality of batteries is provided with various functions, power saving can be achieved by turning on only the functions to be used and supplying power from the batteries corresponding to the respective functions. as shown in FIG. 7(A), the electronic device 5400 is worn from above the clothing 5401 located on the upper arm of the left arm. As the clothing 5401, there are sleeves of military uniforms, protective clothing, suits, uniforms, space suits, etc. can be alleviated by appropriately arranging a plurality of batteries instead of one battery. Also, when many functions are provided, the battery consumption during standby increases. Therefore, a battery is prepared for each function. When the electronic device 5400 having a plurality of batteries is provided with various functions, power saving can be achieved by turning on only the functions to be used and supplying power from the batteries corresponding to the respective functions. The electronic device 5400 having a plurality of batteries is provided with various functions. When the electronic device 5400 having a plurality of batteries is provided with various functions, power saving can be achieved by turning on only the functions to be used and supplying power from the batteries corresponding to the respective functions. can be achieved.

[0156] As shown in FIG. 7(A), the electronic device 5400 is worn from above the clothing 5401 located on the upper arm of the left arm. As the clothing 5401, there are sleeves of military uniforms, protective clothing, suits, uniforms, space suits, etc. One example of clothing can be mentioned. Although the method of wearing is not particularly limited, sewing can be done on the clothing that overlaps the upper arm by a sewing process, or a method of attaching the electronic device 5400 by providing Velcro (registered trademark) or the like on the clothing that overlaps the upper arm , a method of fixing with a band or a fastener, a method of winding with a strip-shaped leaf spring, and the like.

[0157] In addition, the electronic device 5400 has an antenna, and a perspective view when the electronic device 5400 is worn from above the skin and wireless charging is being performed is shown in FIG. 7(B). In FIG. 7(B), the electronic device 5400 is attached to the upper arm 540 2. Since it touches the skin, it is preferable to use a film that is gentle on the skin, or natural materials such as leather, paper, or cloth for the surface that touches the skin of the electronic device 5400 . Also, 5412 is a power transmission device, and wireless charging can be performed on the electronic device 5400 using radio waves 5413.

[0158] In addition, wireless charging may not work well depending on the positional relationship between the charger and the electronic device. Since the electronic device 5400 has a plurality of transceiver units, if they are arranged at random positions, no matter what orientation it is with respect to the charger, power can be received by one of the transceiver units and one battery can be charged. Then, the power management circuit can charge other batteries from the charged one battery, and as a result, all the batteries can be fully charged. Especially in the case of wearable electronic devices, it is desired to be able to charge while being worn on the human body. Having a plurality of batteries and a plurality of transceiver units and being able to charge freely by the power management circuit is useful.

[0159] Also, by providing an antenna and a circuit that can transmit and receive not only power but also other information, other information can be transmitted and received. For example, the electronic device 5400 can be used as a smartphone. The configuration shown in this embodiment can be used in appropriate combination with the configuration shown in other embodiments.

[0160]

[0161] (Embodiment 6) In this embodiment, examples of devices such as portable information terminals will be described below.

[0162] FIG. 8 shows a block diagram of the device 10.

[0163] The device 10 according to this embodiment includes a control module 15, a display module 21, and a communication module 26. The control module 15 is a controller that controls the entire device 10, communication, and the display of information on the display unit 16. The control module 15 includes a CPU 11, a battery 12, a regulator 13, and a wireless reception unit 14.

[0164]

[0165] The display module 21 includes a display unit 16, a display drive circuit 19, a battery 17, a regulator 18, and a wireless reception unit 20. In FIG. 8, an example where the device 10 has a display unit 16 is shown, but it is not particularly limited, and other functional units, such as a sensor unit, can be used instead of the display unit 16.

[0166] The communication module 26 includes a communication circuit 22, a battery 23, a regulator 24, and a wireless reception unit 25.

[0167] Each module has a regulator and a battery respectively. Each regulator uses the power supply of the connected battery to generate the power or signals required for each functional circuit, and supplies them to each functional circuit. Also, when charging the battery, the regulator can prevent overcharging and the like.

[0168] Device 10 can set each module to an on state or an off state independently. By an operation system that selectively drives only the modules to be used, power consumption of device 10 can be reduced.

[0169] For example, when the user views information on display unit 16 without using the communication function, in communication module 26, the power supply to communication circuit 22 is cut off, and it is set to an off state where battery 23 is not used, while display module 21 and control module 15 are set to an on state.

[0170] Furthermore, for still images, after displaying the still image on display unit 16 with display module 21 and control module 15 set to an on state, even if control module 15 is set to an off state while the still image is being displayed, it is possible to continue displaying the still image with only display module 21 set to an on state. Note that if the transistor of display unit 16 uses an oxide semiconductor layer with low off-current (for example, an oxide material containing In, Ga, and Zn), or has a configuration with a memory for each pixel, it is also possible to continue displaying the still image for a certain period even if the power supply from battery 17 is cut off after displaying the still image.

[0171] Also, in this embodiment, display module 21, control module 15, and communication module Although an example was given in which each of the 26 modules has a battery, it is not limited to a total of three batteries. and has four or more batteries, including the functional modules and their batteries. It may also be an electronic device.

[0172] FIG. 9 shows an example of an information terminal having four batteries as an example of an electronic device.

[0173] The electronic device 8000 shown in FIG. 9 has an upper cover 8001 and a lower cover 8002. Touch panel 8004 connected to FPC8003, display panel 8005 connected to FPC8005 Panel 8016, backlight unit 8007, frame 8009, printed circuit board 801 0, CPU 8011, battery 8012a, 8012b, 8012c, 8012d do.

[0174] The upper cover 8001 and the lower cover 8002 are connected to the touch panel 8004 and the display panel The shape and dimensions can be changed as needed to fit the size of the 8016.

[0175] The touch panel 8004 is a resistive or capacitive touch panel. The display panel 8016 can be used by overlapping it with the opposing substrate (sealing substrate) of the display panel 8016. It is also possible to provide the display panel 8 with a touch panel function. It is also possible to provide an optical sensor in each pixel of the touch panel to create an optical touch panel. The Touch Panel 8004 is connected to the printed circuit board via the FPC 8003. The printed circuit board contains a battery 8012a, a regulator 8021, and a receiver 8019. This receiving unit 8019 has an antenna for wireless charging and can receive wireless signals from the outside. The supplied power is charged to the battery 8012a via a regulator. The touch panel 8004 is mainly driven using this battery 8012a.

[0176] Also, the display panel 8016 is an active matrix type liquid crystal display module and is connected via a printed circuit board and an FPC8005. This printed circuit board has a battery 8012b, a regulator 8018, a receiving unit 8020, etc. This receiving unit 8020 has an antenna for wireless charging, and the power wirelessly supplied from the outside is charged to the battery 8012b via a regulator. The display panel 8016 mainly uses this battery 8012b to display an image in the display area.

[0177] The backlight unit 8007 has a light source 8008 such as an LED. Also, the backlight unit 8007 is connected via a printed circuit board and an FPC. This printed circuit board has a battery 8012c, a regulator 8017, a receiving unit 8015, etc.

[0178] In FIG. 9, although a configuration in which the light source 8008 is arranged on the backlight unit 8007 is illustrated, it is not limited to this. For example, the light source 8008 may be arranged at the end of the backlight unit 8007, and a configuration using a light diffusion plate may be adopted.

[0179] Note that the backlight unit 8007 may not be provided in the case of a display device using an organic EL element for the display panel 8016 or a reflective liquid crystal display device. The backlight unit 8007 is provided, for example, in the case of a transmissive liquid crystal display device or a transflective liquid crystal display device. ​

[0180] Note that as the display panel 8016, a display element, a display device which is a device having the display element, a light-emitting element, and a light-emitting device which is a device having the light-emitting element, etc. can use various forms , or can have various elements.

[0181] The frame 8009 has a protection function for the display panel 8016. Also, the frame 8009 may have a function as a heat sink. Also, an antenna of any of the receiving units may be built in .

[0182] The control unit has a CPU 8011, a battery 8012d, a regulator 8013, a receiving unit 8014, and a signal processing circuit for outputting a video signal and a clock signal on the printed circuit board 8010.

[0183] Note that since the electronic device 8000 is an information terminal, it has a communication module as a communication function, and a communication module for realizing a non-contact charging function is mounted. Also, the electronic device 80 00 may be mounted with a communication module for realizing a short-range wireless communication function such as a telephone. In that case, the communication module may also have a structure having a battery. Also, other functions may be mounted. For example, a sensor (including a function of measuring force, displacement, position, speed, acceleration, angular velocity, revolution speed, distance, light, liquid, magnetism, temperature, chemical substance, sound, time, hardness, electric field, current, voltage, electric power, radiation, flow rate, humidity, gradient, vibration, odor or infrared rays), a microphone, etc. may be provided.

[0184] One printed circuit board is used for each function circuit, and according to each function circuit It is equipped with a regulator and a battery that can output the optimal power, and further, the battery is close to the functional circuit, and the wiring for routing can be shortened, so power consumption can be reduced.

[0185] In addition, FIG. 9 shows an example in which one printed circuit board is used for each function and a plurality of printed circuit boards are used in total, but it is not particularly limited, and all functional circuits may be provided on one printed circuit board. In that case, a plurality of batteries will be provided on one printed circuit board. Also, a plurality of functions may be combined on one printed circuit board, and in that case, the batteries may also be combined into one. Also, the display panel 8016, touch panel 8004, and backlight unit 8007 in FIG. 9 are each configured to be electrically connected to the control unit by a wiring cord or FPC not shown in FIG. 9.

[0186] Furthermore, the electronic device 8000 may be provided with a slot for inserting a SIM card, a connector portion for connecting a USB device such as a USB memory, and the like.

[0187] As described above, the electronic device 8000 is an electronic device having a plurality of power supplies, with a battery provided for each unit (module, function) used in the electronic device. As the electronic device 8000 having a plurality of power supplies, power consumption can be reduced by an operation system that selectively drives only the functions to be used.

[0188] Also, each battery has a communication module that realizes a non-contact charging function, and it is possible to control simultaneous charging of a plurality of batteries.

[0189] ​​​​​​​Also, although this embodiment has shown an example of an electronic device 8000 with a box-shaped outer shape, it is not particularly limited and it can also be an electronic device with a complex outer shape. When it is an electronic device with a complex outer shape the degree of freedom in the design of the electronic device can be increased by appropriately arranging a plurality of small batteries at predetermined locations .

[0190] The configuration shown in this embodiment can be used in appropriate combination with the configuration shown in other embodiments .

Explanation of Reference Numerals

[0191] 10 Device 11 CPU 12 Battery 13 Regulator 14 Wireless Receiver 15 Control Module 16 Display Unit 17 Battery 18 Regulator 19 Display Driving Circuit 20 Wireless Receiver 21 Display Module 22 Communication Circuit 23 Battery 24 Regulator 25 Wireless Receiver 26 Communication Module 110 Device 111 CPU 112 Battery 113 Regulator 114 Wireless Receiver 115 Control Module 116 Display Unit 117 Battery 118 Regulator 119 Display Driving Circuit 120 Wireless Receiver 121 Display Module 122 Communication Circuit 123 Battery 124 Regulator 125 Wireless Receiver 126 Communication Module 127 Power Management Circuit 128 Wireless Transmitter 129 Wireless Transmitter 130 Wireless Transmitter 1141 Switching Element 1142 Memory Cell 1143 Memory Cell Group 1188 Regulator 1189 ROM Interface 1190 Substrate 1191 ALU 1192 ALU Controller 1193 Instruction Decoder 1194 Interrupt Controller 1195 Timing Controller 1196 Register 1197 Register Controller 1198 Bus Interface 1199 ROM 5000 Housing 5001 Display Unit 5002 Display Unit 5003 Speaker 5004 LED Lamp 5005 Operation Key 5006 Connection Terminal 5007 Sensor 5008 Microphone 5009 Switch 5010 Infrared Port 5011 Recording Medium Reader 5012 Support Part 5013 Earphone 5014 Antenna 5015 Shutter Button 5016 Image Receiving Unit 5100 Electronic Device 5101 Display Unit 5102 Display Unit 5103 Handle 5200 Electronic device 5201 Seat 5202 Display unit 5203 Antenna installation part 5300 Pacemaker body 5301a Battery 5301b Battery 5302 Wire 5303 Wire 5304 Antenna 5305 Subclavian vein 5306 Superior vena cava 5307 Power management circuit 5400 Electronic device 5401 Clothes 5402 Upper arm 5413 Radio wave 8000 Electronic device 8001 Upper cover 8002 Lower cover 8003 FPC 8004 Touch panel 8005 FPC 8007 Backlight unit 8008 Light source 8009 Frame 8010 Printed circuit board 8011 CPU 8012a Battery 8012b Battery 8012c Battery 8012d Battery 8013 Regulator 8014 Receiver 8015 Receiver 8016 Display panel 8017 Regulator 8018 Regulator 8019 Receiver 8020 Receiver 8021 Regulator 8114 Transceiver 8115 Transceiver 8116 Power management circuit 8119 Transceiver unit 8120 Transceiver unit

Claims

【Claim 1】 An electronic device having a central processing unit, a display unit, and a power management circuit, wherein the central processing unit has a first battery, a first receiving unit, and a first transmitting unit, the first receiving unit having a function of being able to wirelessly charge the first battery, the display unit having a second battery, a second receiving unit, and a second transmitting unit, the second receiving unit having a function of being able to wirelessly charge the second battery, and the power management circuit having a function of being able to wirelessly charge the second battery with the power of the first battery and a function of being able to wirelessly charge the first battery with the power of the second battery.

Images