A photoelectric converter including a crystalline silicon substrate having a light receiving surface including a smooth section and a rough surface section having surface roughness greater than the surface roughness of the smooth section and a light transmissive inorganic film so provided as to overlap with the smooth section and the rough surface section, and the film thickness t1 of a portion of the inorganic film that is the portion where the inorganic film overlaps with the rough surface section is smaller than the film thickness t2 of a portion of the inorganic film that is the portion where the inorganic film overlaps with the smooth section. The arithmetic average roughness of the rough surface section is preferably greater than or equal to 0.1 m.

A photoelectric converter including a crystalline silicon substrate having a light receiving surface including a smooth section and a rough surface section having surface roughness greater than the surface roughness of the smooth section and a light transmissive inorganic film so provided as to overlap with the smooth section and the rough surface section, and the film thickness t1 of a portion of the inorganic film that is the portion where the inorganic film overlaps with the rough surface section is smaller than the film thickness t2 of a portion of the inorganic film that is the portion where the inorganic film overlaps with the smooth section. The arithmetic average roughness of the rough surface section is preferably greater than or equal to 0.1 m.

A wearable electronic device including an electromagnetic induction generator, a rectifier circuit, and an energy storage is provided. The electromagnetic induction generator includes a magnet and a flexible thin film. The flexible thin film is provided with an induction coil. When a relative position between the magnet and the induction coil changes, a magnetic flux passing through the induction coil changes so that an induced current is generated. The rectifier circuit is electrically connected between the induction coil and the energy storage and is configured to receive the induced current to charge the energy storage.

Disclosed is an electronic timepiece including: a first processor that controls a clocking operation; a second processor that has an arithmetic processing capacity higher than an arithmetic processing capacity of the first processor; and an information acquisition circuit that is controlled by the second processor.

A removable case back of an electronic or electromechanical watch case, the case back allows the wireless charging or recharging of a power source. The case back includes a first multi-function sub-assembly having a buzzer, an inductive coil on or integrated in a printed circuit board, the inductive coil being covered by a magnetic shield on an inner side of the watch case, and a second multi-function sub-assembly on the first multi-function sub-assembly having an enclosure structure for accommodating the power source, such as a battery or an accumulator.

A method for managing the electrical consumption of a watch including a step of identifying a need to charge an accumulator of the watch, and a step of charging the accumulator through guided actuation of a control member of an electrical energy generation mechanism of the watch, if a need to charge is identified.

According to various embodiments, a wearable device may be provided. The wearable device may include: a display panel having integrally formed a first display portion and a second display portion; and a driver circuit configured to control the first display portion with a first frequency and to control the second display portion with a second frequency.

An electronic device includes first and second processors, and first and second display units. While the first and second processors cooperate with each other and perform a display operation including a time display, the first processor can be set to a normal mode, a low power mode in which a power consumption is lower than a power consumption in the normal mode, or a pause mode in which a power consumption is lower than the power consumption in the low power mode, and the first processor is stopped. In the normal or low power modes, the first processor controls such that the first display unit displays a time, and the second processor controls such that the second display unit does not display a time. In the pause mode, the first display unit is turned off, and the second processor controls such that the second display unit displays a time.

A recharging device for an electronic or electromechanical watch equipped, on the one hand, with a device for the storage of electrical energy for powering electronic components of the watch and, on the other hand, with an auxiliary source of electrical energy adapted to power the device for the storage of electrical energy for recharging thereof. The device includes a casket provided with a support for receiving the watch. The device further includes at least one source of energy configured to supply energy to the auxiliary source of electrical energy, when the watch is placed on the receiving support, so that the auxiliary source of electrical energy converts the received energy into electrical energy and delivers a charge for maintaining a predetermined level of power supply voltage to the device for the storage of electrical energy.

A recharging device for an electronic or electromechanical watch equipped, on the one hand, with a device for the storage of electrical energy for powering electronic components of the watch and, on the other hand, with an auxiliary source of electrical energy adapted to power the device for the storage of electrical energy for recharging thereof. The device includes a casket provided with a support for receiving the watch. The device further includes at least one source of energy configured to supply energy to the auxiliary source of electrical energy, when the watch is placed on the receiving support, so that the auxiliary source of electrical energy converts the received energy into electrical energy and delivers a charge for maintaining a predetermined level of power supply voltage to the device for the storage of electrical energy.