Abstract: A high-resolution display apparatus having a function of sensing light is provided. A high-definition display apparatus having a function of sensing light is provided. The display apparatus includes a first light-emitting device, a second light-emitting device, a third light-emitting device, a first light-receiving device, and a second light-receiving device in a first pixel. The first light-emitting device has a function of emitting red light. The second light-emitting device has a function of emitting green light. The third light-emitting device has a function of emitting blue light. The first light-receiving device has a function of sensing light emitted from at least one of the three light-emitting devices. The second light-receiving device has a function of sensing infrared light.

Abstract: A vibration damping device including a vibration-damping device main unit inserted into a mounting space of a bracket from a lateral side and securely supported by the bracket. The bracket includes engaging pieces on respective opposed inside faces of the mounting space, and engaging action of the engaging pieces with respect to respective detent engaging faces formed on a fixture member of the vibration-damping device main unit prevents the vibration-damping device main unit from becoming dislodged from the mounting space of the bracket. Opposed walls of the mounting space are each penetrated by an aperture window, and inspection flat surfaces are separately provided to an outside surface of each engaging piece visible from an outside through the aperture window and a corresponding external side surface of the bracket that is off the aperture window. The inspection flat surfaces are parallel to each other.

Abstract: A secondary-battery protecting integrated circuit includes, a power supply terminal connected to a positive electrode of the secondary battery, a ground terminal connected to a negative electrode, an input terminal connected to the negative terminal, a control terminal at which a control signal is input, a pull-down resistor connected between the control terminal and the ground terminal, a voltage monitoring circuit monitoring a voltage between the control terminal and the ground terminal, a voltage comparison circuit configured to compare a voltage at the control terminal with a voltage at the input terminal; and a control circuit configured to perform an operation in which a discharge operation of the secondary battery is prevented by turning off a discharge control transistor included in the switch circuit in response to the voltage monitoring circuit detecting that the voltage between the control terminal and the ground terminal is greater than a first threshold.

Abstract: A secondary-battery protecting integrated circuit includes, a power supply terminal connected to a positive electrode of the secondary battery, a ground terminal connected to a negative electrode, an input terminal connected to the negative terminal, a control terminal at which a control signal is input, a pull-down resistor connected between the control terminal and the ground terminal, a voltage monitoring circuit monitoring a voltage between the control terminal and the ground terminal, a voltage comparison circuit configured to compare a voltage at the control terminal with a voltage at the input terminal; and a control circuit configured to perform an operation in which a discharge operation of the secondary battery is prevented by turning off a discharge control transistor included in the switch circuit in response to the voltage monitoring circuit detecting that the voltage between the control terminal and the ground terminal is greater than a first threshold.

Abstract: A double twist spindle apparatus is arranged to wind two lines of first-twisted component yarns after arranging them in order and performing second twisting operation. A take-up bobbin which winds the first-twisted component yarns is rotated by skin frictional drive of a driving roller wherein a yarn winding speed is kept constant even if winding diameter is increased. A hollow spindle and a driving roller are independently driven by separate driving sources. Accordingly, the relation between rotating speed of the hollow spindle and winding speed of the take-up bobbin can be simply changed by regulating the rotational ratio of the two driving sources.