Alternating current illuminating device and method for making the same

Abstract

The invention provides an alternating current luminescent device, which includes a substrate, a plurality of micro-tube-core luminescent elements formed on the substrate, a special part of rectification elements formed on the surface of parts of the micro-tube-core luminescent elements, rectification units which are formed on the special part of the rectification elements and process the rectification elements with at least four Wheatstone bridges configured by a circuit structure as well as a conductive structure electrically connected with the rectification elements and the micro-tube-core luminescent elements. Through the design that the rectification units are formed on the special part of the rectification elements, the rectification elements present higher bearing capability of reverse bias-voltage and relatively lower voltage value of positive bias starting. Besides, the invention also provides a method for manufacturing the alternating current luminescent device.

Description

technical field [0001] The invention relates to a light emitting device, in particular to an alternating current light emitting device and a manufacturing method thereof. Background technique [0002] With the continuous development of optoelectronic technology, Light Emitting Diode (LED), which is one of the light sources, has been widely used in various fields, and occupies a pivotal position in the optoelectronic industry. Traditional LED chips (chips) are driven by a DC power supply. When used in a general living environment dominated by AC power, an AC-to-DC control circuit and a step-down component must be added to operate normally. This not only increases manufacturing costs, but also increases operating efficiency. It is also reduced accordingly, so it is necessary to develop LED chips directly operated by alternating current. Since 2005, manufacturers in the United States, Japan, South Korea, and China have successively released LED (AC LED) chips that are directly...

AI Technical Summary

Problems solved by technology

Although this kind of LED die can operate normally in the AC environment, due to its own design, each micro-die can only emit light in half of the cycle, so there is only half of the light at each moment in the AC environment. The die is in the working state of forward bias, which will cause a waste of light-emitting area

[0004] In order to improve the above shortcomings, the AC LED design concept based on the Wheatstone Bridge (Wheatstone Bridge) as the equivalent circuit is proposed, which mainly places the light-emitting die module in the area where the current direction is constant after rectification, so that the light-emitting die does not matter whether the alternating current Why can the direction of the bias voltage emit light? However, another problem caused by this design is that if the LED micro-die is directly used as the rectifier element, a large number of LED micro-tubes will be required due to the poor reverse bias voltage tolerance of the LED. The core is used for rectification, so it will also cause waste of die surface area

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