Abstract: A multilayer film measuring device, which comprises in sequence: a measuring module, a multilayer film to be measured, and a circular polarization module. When the measuring module can generate a laser beam through the circular polarization module to the multilayer film to be measured, a reflective polarizer of the multilayer film to be measured completely reflects the laser beam through the circular polarization module to the receiving module, and the laser beam shifted by a surface of a first waveplate of the multilayer film to be measured is absorbed by a second linear polarizer of the circular polarization module, so that the multilayer film can be measured accurately.

Abstract: An in-car safety system includes: a detecting device, a processor, an in-car equipment and a piezoelectric device. The detecting device is disposed on a car. The processor is disposed in the car. The processor is electrically connected to the detecting device. The processor is configured to receive a detecting signal transmitted by the detecting device and transmit an electrical signal in accordance with the detecting signal. The in-car equipment is disposed in the car. The piezoelectric device is disposed on the in-car equipment. The piezoelectric device is electrically connected to the processor. The piezoelectric device is configured to receive the electrical signal and generate a vibration to the in-car equipment in accordance with the electrical signal.

Abstract: An in-car safety system includes: a detecting device, a processor, an in-car equipment and a piezoelectric device. The detecting device is disposed on a car. The processor is disposed in the car. The processor is electrically connected to the detecting device. The processor is configured to receive a detecting signal transmitted by the detecting device and transmit an electrical signal in accordance with the detecting signal. The in-car equipment is disposed in the car. The piezoelectric device is disposed on the in-car equipment. The piezoelectric device is electrically connected to the processor. The piezoelectric device is configured to receive the electrical signal and generate a vibration to the in-car equipment in accordance with the electrical signal.

Abstract: A pixel circuit includes at least one pixel. The at least one pixel includes a first light emitting diode, a second light emitting diode, and a third light emitting diode. A first terminal of the first light emitting diode is configured to receive a voltage signal. A second terminal of the first light emitting diode is configured to receive a first current signal. A first terminal of the second light emitting diode is configured to receive the voltage signal. A second terminal of the second light emitting diode is configured to receive a second current signal. A first terminal of the third light emitting diode is configured to receive the voltage signal. A second terminal of the third light emitting diode is configured to receive a third current signal.

Abstract: A method for preparing an opaque adhesive comprising adding a titanium dioxide nanoparticle or a quantum dot to a matrix of a binder. The titanium dioxide nanoparticle is spherical or rod-shaped. The process exhibits superior thermal and chemical stability. The non-transparent adhesive incorporates TiO2 nanoparticles or a quantum dots into an adhesive matrix to form a chromatic composite adhesive, wherein the TiO2 nanoparticle is rod-shape or sphere-shape.