Abstract: A method for detecting cardiac arrhythmia based on a photoplethysmographic (PPG) signal is provided. The method includes: receiving a PPG signal and a motion signal corresponding to a motion made by a user; extracting PPG signal segments and motion signal segments corresponding to a time period from the PPG signal and the motion signal, respectively, at every time period; filtering out motion artifact noise in the PPG signal segments according to the PPG signal segments and the motion signal segments, and converting the PPG signal segments and the motion signal segments into PPG spectrum diagrams and motion spectrum diagrams, respectively; obtaining an estimated heart rate according to the PPG spectrum diagrams and the motion spectrum diagrams; and determining whether cardiac arrhythmia is present based on the filtered PPG signal segments and the estimated heart rate.

Abstract: A display device including a substrate and a light source array disposed on the substrate is provide. The light source array includes a plurality of light-emitting units disposed on the substrate, and each light-emitting unit has a light source and an optical component. Each light source is disposed on the substrate and has a light emitting surface. Each optical component has a light receiving surface and a light exit surface, and each optical component is disposed on the light source with the light receiving surface connected to the light emitting surface. The optical component also has a side surface connecting the light receiving surface and the light exit surface. The side surface and the light receiving surface have an included angle between 100 and 130 degrees within the optical component.

Abstract: A display device includes a substrate, a first light-emitting diode, an encapsulant and a first Fresnel lens. The first light emitting diode is located on the substrate. The encapsulant covers the first light emitting diode. The first Fresnel lens is located on the encapsulant and overlapping with the first light emitting diode. The width of the first Fresnel lens is 4 to 10 times the width of the first light emitting diode.

Abstract: The present invention provides a display device including a display panel and a haze layer. The display panel includes a plurality of pixels and a color determining surface. The orthogonal projection of each of the plurality of pixels onto the color determining surface forms a plurality of adjacent pixel ranges. The haze layer is disposed on a side of the color determining surface and has a haze surface facing away from the color determining surface. The haze layer has a scattering coefficient ranging from ?1.4 to 0. The haze surface includes a first location corresponding to the center of the first pixel range, and a second location corresponding to a location away from the first edge towards the second pixel range wherein the distance therebetween ranges from 87 ?m to 174 ?m.

Abstract: A polarizer includes an adhesive, a first protective layer, a substrate layer, a second protective layer and a surface protective film. The surface protective film includes a plurality of first particles. Each of the first particles has a first particle size. The first particle size is greater than or equal to 10 ?m.

Abstract: The present invention provides a display device including a display panel and a haze layer. The display panel includes a plurality of pixels and a color determining surface. The orthogonal projection of each of the plurality of pixels onto the color determining surface forms a plurality of adjacent pixel ranges. The haze layer is disposed on a side of the color determining surface and has a haze surface facing away from the color determining surface. The haze layer has a scattering coefficient ranging from ?1.4 to 0. The haze surface includes a first location corresponding to the center of the first pixel range, and a second location corresponding to a location away from the first edge towards the second pixel range wherein the distance therebetween ranges from 87 ?m to 174 ?m.

Abstract: A polarizer includes an adhesive, a first protective layer, a substrate layer, a second protective layer and a surface protective film. The surface protective film includes a plurality of first particles. Each of the first particles has a first particle size. The first particle size is greater than or equal to 10 ?m.