4 results about "Fluorescent light" patented technology

The invention relates to an alignment method and system of an FOG technology. The alignment method of the FOG technology includes the steps that a glass panel provided with a first alignment mark is provided, and the surface of the first alignment mark is coated with a fluorescent material; the first alignment mark is irradiated by a light source with the wavelength corresponding to the fluorescent material, and the light source can make the fluorescent material excited to emit light; a flexible printed circuit board provided with a second alignment mark is placed above the glass panel; according to the relative positions of the first alignment mark and the second alignment mark, the position of the flexible printed circuit board is adjusted, and the second alignment mark is aligned with the first alignment mark. By means of the alignment method and system of the FOG technology, the first alignment mark is coated with the fluorescent material, the fluorescent material is irradiated by the light source to emit light, and therefore the first alignment mark can be displayed more clearly, alignment can be normally performed, and alignment precision is improved.

The invention discloses a high-color-rendering-index white light organic light-emitting device and a preparation method therefor. The device comprises a substrate, a positive electrode layer, an organic functional layer and a negative electrode layer from the bottom up in sequence; the organic functional layer comprises a hole transport layer, a blue light emitting layer and an electron transport layer from the bottom up in sequence; the blue light emitting layer is formed by the following two manners: (1) a host-guest doped structure formed by a host material doped with a blue fluorescent light emitting material, wherein the doping mass ratio of the blue fluorescent light emitting material is 1-20%; and (2) a non-doped structure which is formed by a single-layer host material close to the hole transport layer and a singe-layer blue fluorescent light emitting material close to the electron transport layer. According to the device, only one kind of the blue fluorescent light emitting material is adopted to generate blue light; in combination with the hole transport layer and the host material to form electroplex to generate orange light and red light so as to realize white light emission with high color rendering index; and meanwhile, the device structure and the preparation process are simplified, the production cost is lowered, and the spectrum stability of the device is improved.