3results about How to "Reduce stress effects" patented technology

The application relates to a chip packaging structure, which comprises a packaging substrate and a chip. A first surface of the packaging substrate is provided with a chip mounting area and a stress buffering area surrounding the chip mounting area. The chip is located in the chip mounting area. At least one of the chip mounting area and the stress buffering area is provided with at least one buffering groove, which extends from the first surface to a second surface and at least partially penetrates the packaging substrate. The application can effectively reduce stress concentration of the chip by arranging the buffering groove on the packaging substrate, so as to reduce the stress influence on the chip during installation of a packaging cover, and improve the reliability and stability of the packaging structure.

The utility model provides a kind of unmanned aerial vehicle throwing device for emergency rescue, belong to unmanned aerial vehicle throwing device technical field, including the quick release module of unmanned aerial vehicle bottom setting, the throwing frame of quick release module bottom setting, the lower surface of quick release module is provided with support plate, support plate middle part is provided with throwing device, throwing device bottom is provided with limit ring groove, multiple receiving grooves are opened in limit ring groove, every receiving groove's adjacent side is provided with an opening, the upper portion of throwing frame is provided with connecting assembly, the surface of connecting disc is provided with one inserting block around, the utility model is connected by throwing device and connecting assembly, to make support block insert into limit slot, by pivot driving limit slot rotation, to make connecting disc connected with limit slot rotate, make inserting block fall into receiving groove, to make connecting disc can not be supported by the connection of electric lifting rod, to reduce the influence of motor and electric lifting rod received stress, improve the service life of its component.

This application provides a display device and its driving method. The display device includes a display panel. The display panel includes a plurality of pixel units. Each pixel unit includes a first sub-pixel and at least one second sub-pixel. The first sub-pixel includes a first driving circuit and a first light-emitting diode. The first driving circuit includes a first pulse amplitude modulation control module, a first transistor, and a second transistor. The second sub-pixel includes a second driving circuit and a second light-emitting diode. The second driving circuit includes a second pulse amplitude modulation control module, a second pulse width modulation control module, a third transistor, and a fourth transistor. The technical solution of this application reduces the number of data signal lines, lowers the complexity of the driving circuit, improves color point stability and brightness uniformity, reduces transient current peaks, and improves the reliability of the display device.