7 results about "Color purity" patented technology

The present invention belongs to the technical field of the preparation of organic electroluminescent materials, and specifically relates to a tetradentate cyclometalated platinum (II) complex based on a 4-carbazolyl carbene structure, an electronic device and apparatus, and the use thereof. In the present invention, the steric hindrance of material molecules can be increased by introducing a 4-carbazolyl group having large steric hindrance at a carbene site, such that molecular aggregation can be avoided, and intermolecular interaction and luminescence quenching can be inhibited, which are beneficial for improving the luminescence efficiency and the color purity. The present invention has significant application prospects in the fields of OLED display and illumination.

The present application relates to the field of semiconductor light emitting, in particular to a multi-color LED monolithic integrated structure and a preparation method. The multi-color LED monolithic integrated structure comprises: a substrate, a surface of the substrate comprising at least one undoped nitride layer and at least one N-type nitride buried layer in sequence; and the surface of the substrate comprising a red / green / blue three-color LED structure array epitaxial structure, and the N-type nitride buried layer under at least one of the red / green / blue three-color LED structure array is a porous nitride buried layer. The technical solution solves the technical problems of low In component and strong polarization field of the nitride-based red light LED epitaxy, suppresses / reduces the quantum confinement Stark effect (QSCE), improves the growth quality of the three-color LED, improves the internal quantum efficiency, improves the wavelength stability, display color gamut and color purity; the double-color synchronous epitaxy and single-color separate epitaxy are adopted, the stress accumulation and optical crosstalk bottleneck of the vertical stacked three-color integrated architecture are broken, and the complex process of the traditional multi-color integration is simplified.

The application relates to the technical field of intelligent detection, and particularly discloses a traditional Chinese medicine dyeing color uniformity detection method and system. The original RGB image of a to-be-detected fabric is collected under a standard light source, an effective fabric area image is obtained after color correction and appearance compensation, fabric texture energy prior information is extracted through frequency domain transformation combined with a dye penetration uniformity index, a multi-space level image sequence is constructed, the texture prior information is fused, and then input into a pre-trained texture-color decoupling neural network, a color purity feature image with texture interference inhibited is output, quantitative indexes such as a dye distribution standard deviation and an average gradient amplitude are calculated, a local non-uniformity heat map is generated to locate defects, a uniformity grade and a visual report containing an original image and a defect contour are output. The application is suitable for traditional Chinese medicine dyeing, can realize accurate decoupling of texture and color, highlight weak dyeing differences, and is suitable for different materials and dye types, so that the detection precision of traditional Chinese medicine dyeing uniformity is improved.

This invention provides organic compounds with excellent luminescence efficiency and color purity. [Solution] An organic compound characterized by being represented by the general formula [1]. TIFF2026092656000052.tif5392 In the general formula [1], R1 to R 27 R is a hydrogen atom or various substituents. 21 and R 24 , and, R 22 and R 27 At least one of them may be bonded to form a ring. Ar is a substituted or unsubstituted aryl group. n is an integer between 1 and 5.

The application discloses a kind of multi-quantum well active region and preparation method thereof, including periodically grown multi-quantum well active layer;Single cycle of multi-quantum well active layer includes by sequentially stacking from bottom to top multi-quantum well active region well layer, multi-quantum well active region indium isolation layer, multi-quantum well active region cap layer, multi-quantum well active region interface processing layer and multi-quantum well active region barrier layer, to improve the overall light emitting uniformity of multi-quantum well active region, effectively reduce the half-width of light emitting spectrum, and inhibit blue shift phenomenon, obtain higher color purity, better stability light emitting spectrum.

This invention provides an organic compound and its application. The organic compound has the structure shown in formula (1). The compound of this invention forms an ortho-substitution through a phenylene structure, which is beneficial to reducing the sublimation temperature and improving the stability of the material during the evaporation process. The color is adjusted through M1. Compared with increasing the conjugation or introducing strong donor and acceptor groups, this approach does not cause the compound to broaden its half-peak width, which is beneficial to obtaining better color purity. The compound of this invention has a low triplet energy level, which suppresses the reverse gap jump and improves the device lifetime decay caused by the high-energy, long-lifetime excited triplet state of the parent core structure, which is beneficial to the device lifetime.