CN201087784Y - Hybrid packaged light emitting device - Google Patents

Abstract

The utility model relates to a mix encapsulation type illuminator, it mainly comprises a luminescence unit and a control and drive circuit module or chip, this control and drive circuit module have the effect of carrying out secondary stabilized voltage and electric current, especially be applicable to the visible light and the invisible light LED chip that have high sensitivity to the electrical property, and, it also can drive luminescence unit and produce required light source according to the demand, its finished product can be used as the illumination, or as an electron device's backlight or as light source signal transmission.

Description

Hybrid Packaged Light-Emitting Device

technical field

The utility model relates to a hybrid packaging type light-emitting device, in particular to a control and drive circuit module and a light-emitting unit packaged on the same substrate, so that before the power supply enters the light-emitting unit, the secondary voltage and current can be stabilized. The role of the hybrid package type light emitting device.

Background technique

With the rise of awareness of environmental protection and energy saving, the current development direction of various types of electronic devices is gradually moving towards meeting the needs of environmental protection and energy saving. Among them, the demand for lighting and light sources is the most important. The main reason is that lighting is actually a human being. Indispensable needs in daily life. Moreover, as long as the electronic devices related to the display also need the cooperation of the light source, the content of the display can be effectively presented. For example, LCD TVs, communication devices with display screens, and liquid crystal displays for computers Screens, etc., are inseparable from the application of light sources. In addition, in order to meet the needs of environmental protection and energy saving, traditional lighting devices such as lamp tubes and bulbs have gradually been replaced by light-emitting diodes (LEDs). For example, they are currently used in The MR16 LED lamp for lighting is an example. Another example is the backlight of the early liquid crystal display, which uses CCFL (cold cathode ray tube). Light-emitting diodes (LEDs) are replaced; in terms of applications, light-emitting diodes (LEDs) can indeed meet the requirements of environmental protection and energy saving. However, light-emitting diodes (LEDs) use chips as light-emitting entities, and their sensitivity to electricity is quite high , if the current or voltage is unstable in the power supply condition, the light-emitting diode (LED) will easily be damaged, such as chip burnout, light attenuation, flicker, etc.; please refer to Figure 1, which shows the existing power supply As shown in the figure, when a power supply 10 is input to a use area, it will first pass through a voltage stabilizing device 101, and the voltage stabilizing device 101 is used to stabilize the current and stabilize the voltage, so that The current entering the use area is in a stable state, and then sent to the socket 102 or the lamp holder 103. In this way, the electronic device 104 that needs electricity can be plugged into the socket 102 for use by using an electrical connector, or a light emitting device 105 can be used. Inserted in the lamp holder 103 to achieve the function of generating light. However, as mentioned above, if the electronic device 104 or the light emitting device 105 is applied to the light emitting diode (LED) as the application light source, it should be electrically sensitive characteristics, the current transmission stability needs to be higher, otherwise, it may cause accelerated damage to the electronic device 104 or the light emitting device 105. However, in terms of the current use environment, if the user wants to prevent this problem, only A voltage stabilizing device can be added on its own, so that the current can go through a process of stabilizing the voltage and current before it conducts with the electronic device or light-emitting device used. This will undoubtedly increase the application cost and inconvenience of the user , especially if the electronic device used is a portable electronic device, it is inconvenient.

Contents of the invention

In view of the above problems and needs, the purpose of the present utility model is to provide a hybrid packaging type light emitting device to overcome the above defects.

In order to achieve the above purpose, the technical solution adopted by the utility model is to provide a hybrid packaging type light emitting device, which can generate a light source after the power supply is turned on, which includes:

A light-emitting unit is composed of more than one light-emitting diode chip as a light-emitting source, and the light-emitting unit is packaged on a substrate;

A control and drive circuit module, packaged on the substrate, and electrically connected to the light emitting unit, the control and drive circuit module is composed of a control unit, a drive unit and a current/voltage stabilization unit connected and formed to control and drive the light-emitting unit; and

The control and driving circuit module and the LED chip are completely covered with epoxy resin.

Compared with the prior art, the utility model has the beneficial effects of stabilizing the voltage and current, enabling the power supply entering the light-emitting device to obtain the effect of secondary voltage stabilization and current stabilization, and it can also be further equipped with a control device, The voltage and current can be changed to control the light color change of the light-emitting device, so as to increase its practicability.

Description of drawings

Figure 1 is a diagram of the existing electrical environment;

Fig. 2 is a schematic diagram of the composition unit and circuit layout of the utility model;

Fig. 3 is a schematic diagram (1) of a preferred embodiment of the utility model;

Fig. 4 is the constituent unit and circuit layout schematic diagram of another preferred embodiment (two) of the utility model;

Fig. 5 is another preferred embodiment (three) of the utility model;

Fig. 6 is another preferred embodiment (four) of the present utility model.

Description of reference signs: 10-power supply; 101-voltage stabilizing device; 102-socket; 103-lamp holder; 104-electronic device; 105-lighting device; 20-lighting device; 201-control and drive circuit module; 2011-control Unit; 2012-drive unit; 2013-current/voltage stabilization unit; 202-light-emitting unit; 202'-light-emitting unit; 203-control device; 204-inductive drive device; 30-light-emitting device; 302-light-emitting diode chip; 303-substrate; 304-epoxy resin; 305-fluorescent layer; 306-coating layer; 307-heat sink; 40-light-emitting device; 401-substrate; 402-light-emitting diode chip; and drive circuit module; 404-optical lens.

Detailed ways

The above-mentioned and other technical features and advantages of the present invention will be described in more detail below in conjunction with the accompanying drawings.

Please refer to Fig. 2, which is a schematic diagram of the composition unit and circuit layout of the present utility model. As shown in the figure, the light emitting device 20 disclosed in the present utility model is mainly composed of a control and driving circuit module 201, and a The control and driving circuit module 201 can also be a control and driving chip, which uses the method of mixing and packaging the control and driving circuit module and the LED chip into a light-emitting device, so that the control and driving circuit module 201, It is assembled in the circuit structure of the substrate of the light-emitting device 20 (the substrate is not shown in this schematic diagram), and is electrically connected with the light-emitting unit 202. The light-emitting device 20 referred to in the present invention generally refers to a chip as a light source. A light-emitting diode chip (LED) that can produce light after current conduction, or a light group or light source (such as a surface light source, backlight, side light) composed of a plurality of light-emitting diodes (LED) , or a single light-emitting diode (LED); please refer to the figure again, the control and drive circuit module 201 is an analog circuit module or chip, mainly composed of a control unit 2011, a drive unit 2012 and a current/voltage stabilizing unit 2013, wherein the control unit 2011 can receive the input signal, and the driving unit 2012 can drive the light emitting unit 202 according to the input signal, and, in the light emitting unit 202 The front end is equipped with a current/voltage stabilizing unit 2013, mainly to make the current be rectified and stabilized again before being transmitted to the light-emitting unit 202, so that the current transmitted to the light-emitting unit 202 can be guaranteed to be in a stable state; As above, since the current/voltage stabilizing unit 2013 has been integrated in the circuit layout of the light emitting device 20, the light emitting device 20 itself has the function of rectifying and stabilizing the voltage, and the current is rectified and the voltage is stabilized again before conduction To the light-emitting unit 202 , in this way, the current can be effectively increased to the most stable state, that is, it can meet the requirement of high electrical sensitivity of the light-emitting diode.

Please refer to Fig. 3, shown in the figure is a preferred embodiment (1) of the present utility model, as shown in the figure, the hybrid packaging type light-emitting device 30, which will control and drive the circuit module 301, and the light-emitting diode chip 302 is packaged on a substrate 303, and the control and drive circuit module 301 and the light emitting diode chip 302 are completely covered with epoxy resin 304. Moreover, the epoxy resin 304 can be directly made into an optical lens or a photomask device to After covering or covering, the luminous efficiency of the LED chip 302 can be increased, and it can be replaced by a light-transmitting plastic material; in addition, phosphor powder can be added to the epoxy resin 304 to make the LED chip 302 emit light. Finally, the color mixing effect can be produced. In addition, a fluorescent layer 305 can be coated on the surface of the epoxy resin 304, which can also achieve the color mixing effect. An anti-static coating layer 306 is used to enhance its practicability. Moreover, a heat sink 307 is connected to the bottom of the substrate 303, so that the heat energy generated by the LED chip 302 can be quickly dissipated; please refer to the figure again The control and driving circuit module 301 has a control unit, a driving unit and a current/voltage stabilization unit as shown in FIG.

Please refer to Fig. 4, shown in the figure is another preferred embodiment of the utility model (two) component unit and circuit layout schematic diagram, it is further connected to the control unit 2011 with a control device 203, to adjust the control unit 2011 The output signal, so that the driving unit 2012 drives the light emitting unit 202 according to the output signal, but before the current is transmitted to the light emitting unit 202, it will still pass through the current/voltage stabilization unit 2013 to ensure that the output current is in a stable state; or another example As shown in the figure, an inductive driving device 204 can be connected to the control unit 2011, and the inductive driving device 204 can be selected according to requirements, for example, it can sense temperature changes, or humidity changes, or light changes, or the induction of sound, etc. The driving device uses the sensed environmental changes as a signal to drive the control unit 2011 to improve its practicability.

Please refer to Fig. 5, which shows a schematic diagram of the composition unit and circuit layout of another preferred embodiment (3) of the present utility model, the light-emitting unit 202' as shown in the figure, which is a multi-chip Light-emitting diodes (LEDs), three chips of R, G, and B colors disclosed in the embodiment of this figure, mainly can be modulated by voltage, so that the three chips can emit R (Red), G, respectively. (Green), B (Blue) light sources of three colors to produce the effect of color mixing, and, through the output of different voltages, the three chips can produce light of different color mixing degrees, through the change of color mixing degree, to achieve the required During implementation, the control unit 2011 can adjust the voltage by adjusting the control device 203, so when the current enters, it will generate a specific voltage value according to the degree of voltage modulation, and the drive unit 2012 will perform the modulation. To drive the light-emitting unit 202' in this embodiment, and before the current enters the light-emitting unit, the current/voltage stabilization unit 2013 performs secondary rectification and voltage stabilization to ensure that the output current and voltage are in a stable state; or as shown in the figure As shown in , an inductive driving device 204 can be connected to the control unit 2011, and the inductive driving device 204 can be selected according to requirements, such as inductive driving that can sense temperature changes, or humidity changes, or light changes, or sound, etc. The device uses the sensed environmental change as a signal to drive the control unit 2011 to improve its practicability.

Please refer to Fig. 6, another preferred embodiment (four) of the utility model is shown in the figure, the light emitting device 40 shown in the figure, it is to apply the disclosure of the utility model, a control and drive circuit The module (403) is integrated in the circuit structure of the light emitting device 40, as shown in the figure, on the substrate 401 of the light emitting device 40, a plurality of light emitting diode chips 402 are electrically arranged, and after the current conduction, it can generate light. The control and drive circuit module (403) controls the voltage rise and fall and drives the light-emitting diode chip 402 to generate light. In addition, an optical lens 404 (or mask device) is formed on the top of the light-emitting diode chip 402 to improve its luminous efficiency. , In addition, a coating layer can also be formed on the surface of the optical lens 404 (or mask device), so that it has the effect of preventing static electricity or preventing external force damage; moreover, this optical lens 404 (or mask device) can be ring-shaped Oxygen resin molding, or further molding with epoxy resin mixed with the fluorescent layer, in addition to improving its luminous efficiency, the fluorescent layer can also be used to produce color mixing to emit the required light color; in addition, the light-emitting diode chip (SMDLED) 402 can be It is a single crystal or polycrystalline type, and its surface can also be coated with a layer of fluorescent layer to match the color chips of various colors for color mixing, so that it can achieve full-color luminescence. .

As mentioned above, after the utility model is implemented, the damage rate of the light-emitting device using the light-emitting diode is still low, and a control and driving module or a control and driving chip is packaged in the circuit of the light-emitting device by packaging. structure, so that the incoming current is subjected to secondary rectification and voltage stabilization, and then enters the light-emitting diode chip. In this way, the current after rectification and voltage stabilization is still in a stable state, in order to meet the high sensitivity of light-emitting diodes. In addition, using this control and drive circuit module, voltage modulation can be performed, and it can also meet the color mixing requirements of polycrystalline light-emitting diodes to produce full-color light colors. Furthermore, it can also be used on the chip surface Coated with a fluorescent layer, so that the full-color effect after color mixing is better; in summary, after the utility model is implemented, it can indeed provide a light-emitting device that itself has a stable voltage function, or has The purpose of a light-emitting device with full-color and multi-color performance performance.

Only, the above-mentioned ones are only preferred embodiments of the utility model, and are not intended to limit the scope of the utility model; any person familiar with the art can do equal work without departing from the spirit and scope of the utility model. Changes and modifications should be covered within the patent scope of the present utility model.

Claims (20)

1. hybrid package type light-emitting device, it can produce light source behind power turn-on, it is characterized in that: it comprises:

One luminescence unit, be by more than one light-emitting diode chip for backlight unit as light emitting source, described luminescence unit is encapsulated on the substrate;

One control and drive circuit module, be encapsulated on the described substrate, finish with described luminescence unit and to be electrically connected, described control and drive circuit module are to be electrically connected the group structure with a current/voltage stabilization element and to be formed by a control module, a driver element, in order to control and the described luminescence unit of driving; And

With epoxy resin with described control and drive circuit module, and the complete coating of described light-emitting diode chip for backlight unit.

2. hybrid package type light-emitting device according to claim 1 is characterized in that: described cyclic group mixed with resin has phosphor powder.

3. hybrid package type light-emitting device according to claim 1 is characterized in that: described light-emitting diode chip for backlight unit surface is coated with a fluorescent layer.

4. hybrid package type light-emitting device according to claim 1 is characterized in that: described molding for epoxy resin is an optical lens.

5. hybrid package type light-emitting device according to claim 4 is characterized in that: be mixed with phosphor powder in the described epoxy resin.

6. hybrid package type light-emitting device according to claim 4 is characterized in that: described optical lens surface is coated with a fluorescent layer.

7. hybrid package type light-emitting device according to claim 4 is characterized in that: described optical lens surface is coated with a plated film layer.

8. hybrid package type light-emitting device according to claim 1 is characterized in that: described molding for epoxy resin is a light shield device.

9. hybrid package type light-emitting device according to claim 8 is characterized in that: be mixed with phosphor powder in described epoxy resin.

10. hybrid package type light-emitting device according to claim 8 is characterized in that: described light shield apparatus surface is coated with a fluorescent layer.

11. hybrid package type light-emitting device according to claim 8 is characterized in that: described light shield apparatus surface is coated with a plated film layer.

12. hybrid package type light-emitting device according to claim 1 is characterized in that: described control and drive circuit module are a control and drive chip.

13. hybrid package type light-emitting device according to claim 1, it is characterized in that: described control module is electrically connected with a control device.

14. hybrid package type light-emitting device according to claim 1 is characterized in that: described control module is electrically connected with an induction drive unit.

15. hybrid package type light-emitting device according to claim 14 is characterized in that: described induction drive unit is a temperature sense drive unit.

16. hybrid package type light-emitting device according to claim 14 is characterized in that: described induction drive unit is a humidity inductive drive unit.

17. hybrid package type light-emitting device according to claim 14 is characterized in that: described induction drive unit is a photoinduction drive unit.

18. hybrid package type light-emitting device according to claim 14 is characterized in that: described induction drive unit is a sound induction drive unit.

19. hybrid package type light-emitting device according to claim 1, it is characterized in that: described substrate connects a fin.

20. hybrid package type light-emitting device according to claim 1 is characterized in that: described epoxy resin is that the plastic material of a printing opacity replaces.

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