High-response-rate communication light-emitting device

Disclosed in the invention is a high-response-rate communication light-emitting device comprising a visible-light communication LED device, a negative electrode, and a positive electrode. A plurality of long-strip-shaped chips are arranged inside the visible-light communication LED device and are connected electrically in parallel; and channels are formed among the multiple long-strip-shaped chips and are filled insulating layers, so that the chips are separated from each other electrically. Each long-strip-shaped chip contains a substrate, an n type layer generating electrons, a quantum well layer with combination of electrons and holes, a p type layer generating holes, and an ITO conductive layer; the n type layer generating electrons is in contact with the substrate; and the ITO conductive layer is in contact with a metal electrode arranged at the top of the chip. Insulating layers and metal leads are arranged between the positive electrode and the substrates. According to the invention, on the basis of the long-strip-shaped small-dimension light-emitting chip structure, the dimension of the communication light-emitting device is substantially reduced. Meanwhile, charges can be distributed uniformly at the whole chip, thereby effectively improving the response rate.