LED灯条的制作过程是怎样的?
LED生产流程是怎样的
LED芯片制造工艺是怎样的?
其实外延片的生产工艺非常复杂, 在外延片展会后, 开始LED外延片做下一个电极 (磷, 氮), 然后开始使用激光机切割LED外延片 (此前LED外延片主要采用金刚石切割刀), 制成芯片, 在晶圆的不同位置上提取九点测试参数.
- 主要测试电压, 使晶圆的波长和亮度能够满足正常出货标准参数，然后进行下一步操作. 如果九点测试不符合相关要求, 晶圆将被搁置以进行另一次处理.
2, 晶圆切割成芯片, % 视力检查 (VI/VC), 操作者应使用放大显微镜 30 目视检查次数.
3, 然后根据不同电压使用自动分级机, 波长, 芯片亮度预测参数全自动选择, 测试和分类. - 最后, 查看 (VC) 并给LED芯片贴上标签. 芯片区域应位于蓝膜的中心, 蓝膜上最多有碎片, 但每片蓝膜上的芯片数量不得少于芯片, 和芯片类型, 批号, 数量和光电测量统计数据记录在蜡纸背面贴的标签上. The chips on the blue film will undergo the final visual inspection according to the same standards as the first visual inspection to ensure that the chips are neatly arranged and of good quality. This makes LED chips (collectively known as squares on the market at present).
In the process of LED chip production, the chip with some defects or electrode wear, sorted out, these are the loose crystals behind, at this time in the blue film there are some do not meet the normal shipping requirements of the chip, it will naturally become a side piece or hair, etc.
Talked about in different locations on the wafer extraction parameters testing, nine points do to do not conform to the requirements of the wafer for additional processing, these cannot be directly used to make the LED wafer square piece, also won’t do any sorting, sold directly to customers, which is currently on the market the LED wafer (but also have good things in your wafer, such as the party).
LED霓虹灯
自从霓虹灯问世以来, after a hundred years of unfailing. It is a special low pressure cold cathode glow discharge electric light source, 并且不同于其他如荧光灯, 高压钠灯, 金卤灯, 水银灯, incandescent lamp and other arc lamp. Neon lights are produced by a cold cathode glow discharge under a high voltage field of inert gas filled in a glass tube. The color of the neon lamp is determined by the spectral characteristics of the inert gas. Fluorescent neon lights are filled with argon and mercury, 而霓虹灯发出蓝色和黄色的光. These two types of neon lights are generated by excited radiation from the atoms of the working gas in the tube. Compared with other electric light sources, 霓虹灯具有以下特点:
第一的, 高效率
霓虹灯靠两端的电极发光，在高压场中将灯管内的惰性气体, 不同于普通光源必须烧钨丝高温才能点亮, 导致大量的电能以热能的形式被消耗掉, 所以, 用同样的电能, 霓虹灯具有更高的亮度.
二, 温度低, 使用不受气候限制
霓虹灯因其冷阴极特性, 工作时管温低于60℃, 所以它可以放置在阳光下和雨中的露天或体内.
低能耗
在技术不断创新的时代, the manufacturing technology of neon lights and the technical level of related parts are constantly improving. The application of new electrodes and electronic transformers has greatly reduced the power consumption of neon lights, 从 56 每米灯的瓦特数 12 每米灯的瓦数.
四, 长寿
霓虹灯在连续通电的情况下连续工作, 生命超过 10,000 小时, 这一优点是其他任何电光源难以达到的.
五, 灵活生产, 多种颜色
霓虹灯由玻璃管制成，可以烧制并弯曲成任何形状，具有很大的灵活性. 通过选择不同类型的管子并填充不同的惰性气体, 霓虹灯可以产生五颜六色的, 多色光.
六, 动态的, 效果好, 经济实用
霓虹灯屏由稳光管和动态光扫描管组成, 可设置跳跃扫描, 渐进扫描, 混色变七色扫描. 扫描管由配备微电脑芯片编程扫描仪控制, 扫描管按编好的程序点亮或熄灭, 形成图片流, 就像天空中的彩虹, 像银河系, 更像是一个梦幻世界, 迷人, 难忘. 所以, 霓虹灯是一种投资较少的广告形式, 强大的效果和经济实用性