Alternating current light-emitting device

Abstract

The invention discloses an alternating current (AC) light-emitting device. The device comprises a substrate and a plurality of light-emitting units, wherein the light-emitting units are arranged on the substrate, each light-emitting unit contains a first semiconductor layer, a luminous layer and a second semiconductor layer from bottom to top, at least one first electrode and second electrode are separately arranged on the first semiconductor layer and the second semiconductor layer, and each light-emitting unit is coupled with at least one adjacent light-emitting unit through a wire. As the light-emitting device has a plurality of light-emitting units and each light-emitting unit is coupled with at least one adjacent light-emitting unit through a wire, the problem that as one wire is broken, the AC light-emitting device is open can be avoided.

Description

technical field [0001] The invention relates to a light emitting device, in particular to an AC light emitting device. Background technique [0002] Light Emitting Diode (LED) is a light-emitting component made of semiconductor materials. The component has a voltage applied between two electrodes, and a very small current is passed through. The form is stimulated to release, which is the basic principle of light-emitting diodes. Light-emitting diodes are different from ordinary incandescent light bulbs. Light-emitting diodes are cold-emitting, and have the advantages of low power consumption, long component life, no warm-up time, and fast response. In addition, they are small in size, resistant to vibration, suitable for mass production, and easy to use. According to the requirements of the application, it can be made into extremely small or array components. At present, light-emitting diodes have been widely used in indicators and display devices of information, communicat...

AI Technical Summary

Problems solved by technology

[0004] However, the plurality of first light-emitting units 142 of the first light-emitting module 14 and the plurality of second light-emitting units 162 of the second light-emitting module 16 each occupy half of the area of ​​the substrate 12, so the existing AC light-emitting devices 10 respectively operate under positive and negative conditions of the alternating current. The light-emitting area in the negative half-wave cycle is only half, so the existing AC light-emitting device 10 can only provide the original light-emitting efficiency of the existing AC light-emitting device 10 due to the light-emitting area provided by the first light-emitting module 14 and the second light-emitting module 16 half of that, and the plurality of first light emitting units 142 and the plurality of second light emitting units 162 of the existing AC light emitting device 10 only use one wire 144, 164 to couple the polarity of the power supply to the adjacent light emitting units, therefore When one of the wires 144, 164 is disconnected, one of the first light emitting module 14 and the second light emitting module 16 of the existing AC light emitting device 10 will be open and unable to emit light, thus causing the existing AC light emitting device to 10 can only emit light in one of the positive and negative half-wave cycles

[0005] Aiming at the above-mentioned light-emitting area problem, the publication number is WO2007083885, and the PCT international patent application publication named "LIGHT EMITTING DEVICE WITH LIGHT EMITTING CELLS ARRAYED" discloses a light-emitting device, which includes a substrate, an array of light-emitting crystals and a The rectifier circuit, the rectifier circuit and the array of light-emitting crystals are arranged on the substrate, and the rectifier circuit surrounds the array of light-emitting crystals, wherein the rectifier circuit includes multiple diodes, the array of light-emitting crystals includes multiple light-emitting crystals, and the multiple The light-emitting crystals are coupled in series through a single wire, but the rectifier circuit uses the circuit area around the substrate, so the rectifier circuit limits the effective light-emitting area of ​​the light-emitting device, and the multiple diodes are electrically connected in series through a single wire. phase coupling, so when one of the wires of the light-emitting device is disconnected, one of the rectifier circuit or the light-emitting die array will be in an open state, causing one of the rectifier circuit or the light-emitting die array to fail to operate

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