CN216017212U

CN216017212U - Alternating-current flickering LED chip

Info

Publication number: CN216017212U
Application number: CN202121621215.7U
Authority: CN
Inventors: 侯启兵; 郑明松
Original assignee: Jiangmen Qiying Lighting Technology Co ltd
Current assignee: Jiangmen Qiying Lighting Technology Co ltd
Priority date: 2021-07-16
Filing date: 2021-07-16
Publication date: 2022-03-11
Anticipated expiration: 2031-07-16
Also published as: EP4207948A4; WO2023284081A1; EP4207948A1

Abstract

The utility model discloses an alternating current flashing LED chip which comprises a chip substrate, wherein a chip internal rectified negative electrode, a chip rectified positive electrode, a first alternating current input end, a second alternating current input end and an LED driving pin are arranged on the chip substrate, the chip rectified negative electrode and the chip rectified positive electrode are connected with a capacitor in parallel, and an LED light-emitting diode is connected between the chip rectified positive electrode and the LED driving pin. Compared with the prior art, the utility model has the advantages that: the utility model carries out rectification in the integrated circuit, can still enable the chip to work under the condition of alternating current and drives the LED to flicker. Because the cost of designing capacitor filtering in the integrated circuit is higher, the capacitor filtering is used outside the LED chip, and the requirement of working under a complete alternating current state is met.

Description

Alternating-current flickering LED chip

Technical Field

The utility model relates to an LED chip, in particular to an alternating current flickering LED chip.

Background

In the field of LED decorative lamps, besides the normal constant-brightness effect of conventional LEDs, a plurality of LED lamps are provided with flickering LEDs as the flickering decorative effect. Fig. 3 shows the circuit principle of an IC under conventional dc operation. The DC power supply is electrified to perform internal oscillation, and the LED is driven to flicker according to the set frequency. Because the general use environment of the IC is in a dc state, many decorative lights need rectification filtering to make the decorative light string with the flash IC work, and the cost of designing a capacitor filter in the integrated circuit is relatively high. Therefore, it is an urgent problem for those skilled in the art to develop an ac blinking LED chip.

SUMMERY OF THE UTILITY MODEL

The utility model provides an alternating current flickering LED chip to solve the defects.

The above object of the present invention is achieved by the following technical means: the utility model provides an exchange scintillation LED chip, includes the chip base plate, be equipped with chip inside rectification back negative pole, chip rectification back positive pole, first AC input end, second AC input end and LED drive foot on the chip base plate, positive parallel capacitance after negative pole and chip rectification behind the chip rectification, be connected with LED emitting diode between positive pole and the LED drive foot behind the chip rectification.

The alternating current flickering LED chip is connected with an LED support, the LED support is provided with a first pin, a second pin, a third pin and a fourth pin, the capacitor is connected between the second pin and the third pin, the second pin and the third pin are respectively connected with a negative electrode after rectification in the chip and a positive electrode after rectification in the chip, and the LED driving pin and the first alternating current input end are respectively connected with the first pin and the fourth pin; the LED lamp is characterized in that epoxy resin coating layers are arranged outside the alternating current flickering LED chip and the LED support, and the epoxy resin coating layers are exposed out of the first pin and the fourth pin.

When the LED driving circuit works, the negative electrode after the rectification of the chip and the positive electrode after the rectification of the chip are connected with the capacitor in parallel, and the filtering is carried out, so that the LED chip can be completely used under the condition of alternating current (only the negative driving of the LED is explained here, and the positive driving is not specifically explained).

Compared with the prior art, the utility model has the advantages that:

1. the utility model carries out rectification in the integrated circuit, can still enable the chip to work under the condition of alternating current and drives the LED to flicker. Because the cost of designing capacitor filtering in the integrated circuit is higher, the capacitor filtering is used outside the LED chip, and the requirement of working under a complete alternating current state is met.

2. The utility model solves the problem that a flashing LED is needed to be used in a decorative lamp or under the condition of commercial power, rectification and filtering are not needed, and the LED works directly through a resistor or after other voltage reduction, thereby simplifying the requirements on the use environment to a great extent and enabling the LED to be used in multiple fields.

Drawings

Fig. 1 is a schematic circuit diagram of an LED chip of the present invention under ac operation.

Fig. 2 is a schematic diagram of the package of the LED chip of the present invention.

Fig. 3 is a schematic circuit diagram of a conventional LED chip under dc operation.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and 2, an ac flickering LED chip includes a chip substrate, a chip-internal rectified negative electrode 101, a chip-rectified positive electrode 102, a first ac input terminal 103, a second ac input terminal 104, and an LED driving pin 105 are disposed on the chip substrate 100, a capacitor 106 is connected in parallel with the chip-rectified negative electrode 101 and the chip-rectified positive electrode 102, and an LED light emitting diode 107 is connected between the chip-rectified positive electrode 102 and the LED driving pin 105.

The alternating current flickering LED chip is connected with an LED support 200, the LED support 200 is provided with a first pin 201, a second pin 202, a third pin 203 and a fourth pin 204, the capacitor 106 is connected between the second pin 202 and the third pin 203, the second pin 202 and the third pin 203 are respectively connected with a negative electrode 101 after rectification in the chip and a positive electrode 102 after rectification in the chip, and the LED driving pin 105 and the first alternating current input end 103 are respectively connected with the first pin 201 and the fourth pin 204; the external parts of the alternating-current flickering LED chip and the LED support 200 are provided with epoxy resin coating layers, and the first pin 201 and the fourth pin 204 are exposed out of the epoxy resin coating layers.

In operation, the capacitor 106 is connected in parallel with the chip rectified negative electrode 101 and the chip rectified positive electrode 102 for filtering, so that the LED chip can be used completely under the ac condition (only the negative driving LED is explained here, and the positive driving is not specifically explained here).

Fig. 3 is a schematic diagram of an LED package. The largest pin 203 is used for placing an LED chip, the capacitor 106 is transversely placed between the pin 202 and the pin 203, and the rectified cathode 101 in the chip is connected with the rectified anode 102 of the chip through a bonding wire. The first alternating current input end 103 and the second alternating current input end 104 are respectively connected with the pin 202 and the pin 204, epoxy curing molding is used after welding is completed, and finally the pin 202 and the pin 203 are cut short, only the pin 201 and the pin 204 are reserved for alternating current input.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. An alternating current flickering LED chip is characterized in that: the LED driving circuit comprises a chip substrate, wherein a negative electrode after chip internal rectification, a positive electrode after chip rectification, a first alternating current input end, a second alternating current input end and an LED driving pin are arranged on the chip substrate, a capacitor is connected in parallel between the negative electrode after chip rectification and the positive electrode after chip rectification, and an LED light-emitting diode is connected between the positive electrode after chip rectification and the LED driving pin.

2. An AC flicker LED chip according to claim 1, wherein: the alternating current flickering LED chip is connected with an LED support, the LED support is provided with a first pin, a second pin, a third pin and a fourth pin, the capacitor is connected between the second pin and the third pin, the second pin and the third pin are respectively connected with a negative electrode after rectification in the chip and a positive electrode after rectification in the chip, and the LED driving pin and the first alternating current input end are respectively connected with the first pin and the fourth pin; the LED lamp is characterized in that epoxy resin coating layers are arranged outside the alternating current flickering LED chip and the LED support, and the epoxy resin coating layers are exposed out of the first pin and the fourth pin.