Abstract: The present invention discloses a light-emitting diode (LED) display driver chip and use thereof, which relates to the cross technical field of an integrated circuit and LED display. Based on an existing chip architecture with dual-latch and PWM, the present invention proposes to apply a modulation method of mixing pulse amplitude modulation (PAM) and pulse width modulation (PWM) to a driver chip architecture, to replace an existing PWM control mode, so as to obtain better uniformity of the image grayscale in a small current mode; and use a DAC small current precision control circuit to obtain a more precise current output, to meet the application performance requirements of ultra-high-density LED display, which can process data to achieve a better driving effect, and meet the application performance requirements of ultra-high-density LED display.

Abstract: A toothbrush head for an electric toothbrush, comprising a toothbrush head handle (1); a first plate (4) is arranged below the toothbrush head handle (1); and a first bristle sheet (9) and a second bristle sheet (8) are longitudinally arranged below the first plate (4). Tooth cleaning demands of people different in oral cavity and tooth size can be satisfied by means of surrounding effects of the three-sided bristles and self-adaptive effects of automatic bristle fitting along with thickness changes from front teeth to molars.

Abstract: An electric toothbrush includes a toothbrush body. The toothbrush body includes a toothbrush head. The toothbrush head includes a handle part, a first platy body disposed below the handle part, and a first brushing sheet and a second brushing sheet disposed side by side and below the first platy body. The lower surface of the first platy body is provided with a first brush bristle, the rear side surface of the first brushing sheet is provided with a second brush bristle, and the front side surface of the second brushing sheet is provided with a third brush bristle.

Abstract: The present invention discloses a light-emitting diode (LED) display driver chip and use thereof, which relates to the cross technical field of an integrated circuit and LED display. Based on an existing chip architecture with dual-latch and PWM, the present invention proposes to apply a modulation method of mixing pulse amplitude modulation (PAM) and pulse width modulation (PWM) to a driver chip architecture, to replace an existing PWM control mode, so as to obtain better uniformity of the image grayscale in a small current mode; and use a DAC small current precision control circuit to obtain a more precise current output, to meet the application performance requirements of ultra-high-density LED display, which can process data to achieve a better driving effect, and meet the application performance requirements of ultra-high-density LED display.

Abstract: An electric toothbrush includes a toothbrush body. The toothbrush body includes a toothbrush head. The toothbrush head includes a handle part, a first platy body disposed below the handle part, and a first brushing sheet and a second brushing sheet disposed side by side and below the first platy body. The lower surface of the first platy body is provided with a first brush bristle, the rear side surface of the first brushing sheet is provided with a second brush bristle, and the front side surface of the second brushing sheet is provided with a third brush bristle.

Abstract: A battery cover latch mechanism used to releasably latching a battery cover to a housing, the battery cover latch mechanism includes a clasp positioned on the battery cover; and a button. The button includes a resilient member, a main portion positioned on a middle of the resilient member, and two blocks respectively formed on two ends of the resilient member. The main portion and the resilient member are slidably assembled on the housing, the blocks resists the battery cover, the main portion latching to the clasp. When the main portion is pressed, the main portion is detached from the clasp, the resilient member drives the blocks pushing the battery to open the battery cover relative to the housing. The invention also discloses a portable electronic device using the battery cover latch mechanism.

Abstract: A battery cover latch mechanism used to releasably latching a battery cover to a housing, the battery cover latch mechanism includes a clasp positioned on the battery cover; and a button. The button includes a resilient member, a main portion positioned on a middle of the resilient member, and two blocks respectively formed on two ends of the resilient member. The main portion and the resilient member are slidably assembled on the housing, the blocks resists the battery cover, the main portion latching to the clasp. When the main portion is pressed, the main portion is detached from the clasp, the resilient member drives the blocks pushing the battery to open the battery cover relative to the housing. The invention also discloses a portable electronic device using the battery cover latch mechanism.