The new topic of lighting factory lighting: a lamp LED and a clothing OLED

New topic of lighting factory lighting: a lamp LED and a piece of clothing OLED screen can be bent, mobile phone foldable, paper-thin TV screen; transparent windows during the day allow light to shine in, and at night it becomes a light source ; Navigation information can be played through the windshield of the car. The beauty of these future electronic products is due to OLED technology. Therefore, OLED will eventually dominate the display and lighting fields in the future. The lifespan of LED can reach more than 10,000 hours, and a person can use a lamp in a lifetime. OLED has special flexibility. The clothes of the future will be the display screens. You can display what kind of color you want, and you can wear one piece of clothing for a generation. From the perspective of lighting requirements, LEDs are point-emitting, with concentrated lighting rays, which are more eye-catching when used in outdoor environments, and are suitable for local area lighting, advertising signs, traffic warning signs and other applications. OLED is surface-emitting, the light is softer and uniform, and the effect is better indoors. Both have their own strengths. From the perspective of lamp design, LED heating is concentrated, and additional lampshades, heat dissipation devices, light scattering devices, etc. are required. The design of the lamp is more complicated: the flat light source characteristics of OLED, in addition to the design of various types of lamps, the heat dissipation performance is also added. Additional heat dissipation elements must be installed to increase the cost of the lamp. The realization of OLED light emission on flexible substrates in the future will create unlimited imagination for lighting designers. From this point of view, OLED is even better. From the aspect of optical efficiency, the luminous efficiency of LED chips can reach above lm/W. When additional lamps are added, due to the influence of lampshades, light scattering and other devices, the actual efficiency may drop to about lm/W; OLED lighting can only be used at present To ~lm/W, there is still a big gap, and there is a big difference in performance between different materials. Further efforts are needed in material research and device structure design.　　 In terms of cost of creation, with the expansion of production capacity and technological progress, the price of LED has gradually decreased, and the gap has gradually narrowed with traditional lighting. The price of OLED lighting is still too high, mainly because the cost of OLED lighting materials remains high, coupled with the failure to improve the efficiency of mainstream evaporation processes, so the material utilization rate is not high, which in turn increases the production cost of OLED lighting. In terms of product life, LED lighting can theoretically reach 10,000 hours. Of course, there are problems such as heating that affects lifespan and light decay during use; the lifespan of OLED devices is seriously insufficient, generally only one hour, which also restricts its market application* As a serious obstacle, if OLED lighting applications are to be popularized, its life must be further improved. The initial goal is to reach the level of fluorescent lamps, that is, hours, and the future goal is to reach hours. To achieve this goal, it must be in terms of materials. There are major breakthroughs and further advancements in device structure and technology.