7results about How to "Improve light extraction rate" patented technology

The utility model relates to the technical field of semiconductor luminescence, and discloses a lens and an LED device using the same, and the lens comprises an optical function area and a bearing part. The optical functional region includes a light guide structure and a third optical interface. The light guide structure comprises a first optical interface on the bottom surface and used for inputting light and a second optical interface on the side surface and used for reflecting the light. A cavity structure is arranged between the second optical interface and the bearing part. An opening is formed in one side of the cavity structure. The third optical interface is a free-form surface with the center area recessed inwards, and the curvature of the third optical interface is gradually reduced from the center to the edge. By arranging the light guide structure, the height of the light-emitting surface is increased, the height of the lens is further increased, the problem of light interference is solved, and the light energy utilization rate is improved. And the surface type arrangement of the third optical interface realizes large-angle light emission and uniform light emission of the LED device. The overall structure is simple, production cost is low, and heat dissipation is good.

The invention discloses a display panel, a preparation method thereof and a display device. The display panel comprises a driving substrate and a light emitting diode. The light emitting diode is arranged on the driving substrate; the display panel comprises a light-emitting surface, a first reflecting layer and a first insulating protective layer are arranged on the side, away from the light-emitting surface, of the light-emitting diode, and the first insulating protective layer is arranged on the surface of the first reflecting layer. The first reflecting layer is arranged on the side, away from the light-emitting face, of the light-emitting diode, emergent light of the light-emitting diode is reflected to the light-emitting face, and the light extraction rate of the light-emitting diode is increased; the first insulating protection layer is arranged on the surface of the first reflecting layer to protect the first reflecting layer and prevent water and oxygen from eroding the first reflecting layer.

The utility model relates to the technical field of semiconductor luminescence, and discloses a sensor device, which comprises a substrate, a bearing part, an optical chip and a light-transmitting glue layer. The bearing part is arranged on the substrate and comprises at least two cavity structures. The optical chip is arranged on the substrate and in the cavity structure. At least one optical chip is arranged in the cavity structure. And the light-transmitting glue layer is arranged in the cavity structure, covers the optical chip and is used for improving the light extraction rate and performing optical shaping. According to the utility model, the light extraction rate is improved by covering the light-transmitting glue layer on the optical chip; the reflecting surface is arranged on the side surface of the light-transmitting adhesive layer, so that the light energy utilization rate is further improved, and the high detection precision of the sensor device is further ensured. Meanwhile, the structure is simple, reasonable and stable.

This invention provides a display panel and a display device. The display panel includes a first optical refractive layer and a second optical refractive layer. The first optical refractive layer includes multiple openings, and the second optical refractive layer fills the multiple openings. The refractive index of the second optical refractive layer is greater than that of the first optical refractive layer. Nanoparticles are also disposed within the second optical refractive layer. When light passes through, the first and second optical refractive layers effectively increase the light transmittance. Simultaneously, the nanoparticles further act on the light, thereby effectively improving the light extraction rate of the display panel and enhancing its display effect.

The invention discloses a preparation method of a silver-based high-reflectivity back electrode material, and relates to the technical field of electronic materials. An acid modified copper plate is used as an electrode material substrate, positively charged polystyrene microspheres are adsorbed and are autonomously arranged to form a seed layer, then generated silver nanorods are effectively fixed on the surface of the copper plate by means of gaps among the polystyrene microspheres and negative charges on the surface of the copper plate, and then in the SnCl4 atmosphere, the silver nanorods are effectively fixed on the surface of the copper plate. Plasma enhanced heating treatment is carried out, a silver nitrate solution is gradually converted towards the direction of nano-silver crystals along with solvent removal, nano-silver and Sn elements are combined under the combined action of plasma and a high-temperature environment, polystyrene microspheres are heated and removed along with the prolonging of reaction time, a nano-rod array is formed, total reflection of light can be reduced, and the light emitting efficiency is improved. The light scattering is increased, the light extraction rate of the LED is effectively improved, meanwhile, due to the existence of the Sn element, the contact between sulfide and silver can be reduced, and the possibility of vulcanization of the electrode material is reduced.

The utility model relates to a head-up display system. The head-up display system comprises a backlight module, a display panel and a polarizing element. The backlight module comprises a substrate and a plurality of LED light sources, the LED light sources are arranged on the substrate, and each LED light source is an integrated lens light source. The display panel is obliquely arranged relative to the backlight module. The polarizing element is arranged between the backlight module and the display panel and used for deflecting normal light in light emitted by the LED light source or refracting normal light emitted by the deflected LED chip to form emergent light irradiated to the display panel in the preset direction. The polarization element is arranged to deflect the normal light of the LED light source or refract the normal light of the deflected LED chip, so that the emergent light of the polarization element irradiates the display panel in the preset direction, and the light intensity of the normal emergent light of the LED light source or the LED chip is higher than that of the corresponding lateral light. The emergent light formed after deflection can obviously improve the luminance of the display panel.

The application provides a display panel, which has a display area, a hole area and a peripheral area, the peripheral area is arranged at the periphery of the hole area, the display area is arranged at the periphery of the peripheral area, and the display panel comprises a back plate, a plurality of light emitting elements, an encapsulation layer and a first flat layer, the back plate, the encapsulation layer and the first flat layer are located in the display area and the peripheral area, the plurality of light emitting elements are located in the display area and on one side of the back plate, the encapsulation layer is located on the side of the plurality of light emitting elements away from the back plate, the first flat layer is located on the side of the encapsulation layer away from the back plate, further comprising a plurality of light extraction structures, which are located in the display area, on the side of the encapsulation layer away from the back plate and on the side of the first flat layer close to the back plate, the plurality of light extraction structures correspond to the plurality of light emitting elements one by one, and the orthographic projection of the light extraction structure on the back plate covers the light emitting element. The display panel can avoid the occurrence of GDSH (i.e. black spots on the edge of the hole) in the peripheral area at the periphery of the hole area.