CN104319355A - Light-emitting device and drive control method and lamp thereof - Google Patents
Light-emitting device and drive control method and lamp thereof Download PDFInfo
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- CN104319355A CN104319355A CN201410669436.XA CN201410669436A CN104319355A CN 104319355 A CN104319355 A CN 104319355A CN 201410669436 A CN201410669436 A CN 201410669436A CN 104319355 A CN104319355 A CN 104319355A
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
Abstract
The invention provides a light-emitting device and a drive control method and lamp of the light-emitting device, and relates to the technical field of semiconductor lighting. The light-emitting device comprises a plurality of light-emitting units and insulating layers, wherein the light-emitting units are stacked together and can emit light of different colors; the insulating layers are arranged between every two adjacent light-emitting units; the anodes of the light-emitting units are connected with the same anode voltage control circuit, and the cathodes of the light-emitting units are connected with a plurality of cathode voltage control circuits in a one-to-one correspondence mode; or the anodes of the light-emitting units are connected with a plurality of anode voltage control circuits in the one-to-one correspondence mode, and the cathodes of the light-emitting units are connected with the same cathode voltage control circuit; or the anodes of the light-emitting units are connected with the anode voltage control circuits in the one-to-one correspondence mode, and the cathodes of the light-emitting units are connected with the cathode voltage control circuits in the one-to-one correspondence mode. The light-emitting device can emit the light with various colors and can switch the emitting colors.
Description
Technical field
The present invention relates to technical field of semiconductor illumination, particularly relate to a kind of luminescent device and drived control method, light fixture.
Background technology
OLED (Organic Light Emitting Diode, organic light emitting diode) generally include anode, luminescent layer and negative electrode, wherein luminescent layer adopts organic semiconducting materials to be formed, under electric field driven, anode is to luminescent layer injected hole, negative electrode injects electronics to luminescent layer, and hole and electronics complex excitation emitting layer material in luminescent layer is luminous.Due to OLED have flat luminous, ultra-thin, transparent, can the advantage such as flexibility, energy-efficient, environmental protection, therefore in the large application of display and lighting two, all there is great development potentiality, obtain and pay close attention to widely.
OLED can realize glow color and regulates arbitrarily in visible region (light comprising red, green, blue, the color such as white) by changing the molecular structure of emitting layer material.But current OLED luminescent device all can only carry out the type of lighting of solid color or white, and namely an OLED luminescent device can only provide a kind of color, cannot carry out the checker of color.
Summary of the invention
For overcoming above-mentioned defect of the prior art, technical problem to be solved by this invention is: provide a kind of luminescent device and drived control method, light fixture, to realize the light that a kind of luminescent device can provide multiple color, and can carry out the object of color switching.
For achieving the above object, the present invention adopts following technical scheme:
A first aspect of the present invention provides a kind of luminescent device, comprise: multiple luminescence units stacked together, each described luminescence unit comprises anode, negative electrode and the luminescent layer between described anode and described negative electrode, and the color of the light that described multiple luminescence unit can send is different; Be arranged between adjacent two described luminescence units for keeping the insulating barrier of adjacent two described luminescence unit mutually insulateds; At least one the anode voltage control circuit be connected with the anode of described luminescence unit; At least one the cathode voltage control circuit be connected with the negative electrode of described luminescence unit; Wherein, the anode of described multiple luminescence unit is all connected with same anode voltage control circuit, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one; Or the anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one, the negative electrode of described multiple luminescence unit is all connected with same cathode voltage control circuit; Or the anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one, the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
Preferably, be arranged in the luminescence unit of bottom, anode is in the bottom, and anode exceeds the coverage of luminescent layer and negative electrode, and anode exceeds the part of the coverage of luminescent layer and negative electrode for exceeding part; Be positioned at described in being laminated in bottom luminescence unit on luminescence unit anode with described be positioned at bottom luminescence unit anode exceed partial electrical contact; The described anode being positioned at the luminescence unit of bottom is connected with an anode voltage control circuit, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
Preferably, be arranged in the luminescence unit of bottom, negative electrode is in the bottom, and negative electrode exceeds the coverage of luminescent layer and anode, and negative electrode exceeds the part of the coverage of luminescent layer and anode for exceeding part; The negative electrode being positioned at the luminescence unit on the luminescence unit of bottom described in being laminated in contacts with the described part that exceeds being positioned at the negative electrode of the luminescence unit of bottom; The described negative electrode being positioned at the luminescence unit of bottom is connected with a cathode voltage control circuit, and the anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one.
Preferably, the coverage of each rete of described multiple luminescence unit is identical, the anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
Preferably, each rete of described multiple luminescence unit is transparent film layer; Or the rete that the luminescence unit bottom being arranged in is in the bottom is opaque rete, the rete that the luminescence unit being arranged in bottom described in being laminated in is on the rete of the bottom is transparent film layer; Or the rete that the luminescence unit being arranged in top is in most top layer is opaque rete, described in be arranged in top luminescence unit be in most top layer rete below rete be transparent film layer.
Preferably, described luminescent device comprises three luminescence units, and described three luminescence units glow respectively, green glow and blue light; Or described luminescent device comprises four luminescence units, described four luminescence units glow respectively, green glow, blue light and gold-tinted.
Preferably, described luminescent device also comprises: a transparency carrier, and described multiple luminescence unit is laminated on described transparency carrier.
A second aspect of the present invention provides a kind of drived control method of luminescent device, for driving above-described luminescent device, described drived control method is: when the glow color needed is a kind of in the glow color of single luminescence unit in described luminescent device, the anode voltage control circuit that utilization is connected with the luminescence unit that can not send the light needing color and cathode voltage control circuit control the described luminescence unit that can not send the light needing color and close, utilize the anode voltage control circuit that is connected with the luminescence unit that can send the light needing color and cathode voltage control circuit to control described can sending needs the luminescence unit of the light of color to open simultaneously, when the glow color needed is the colour mixture of the glow color of at least two luminescence units in described luminescent device, utilize the anode voltage control circuit that is connected with the luminescence unit that can not send the light forming the color that described colour mixture needs and cathode voltage control circuit control described in can not send the light of the color forming described colour mixture needs luminescence unit close, utilize simultaneously the anode voltage control circuit that is connected with the luminescence unit that can send the light forming the color that described colour mixture needs and cathode voltage control circuit control described in can send the light of the color forming described colour mixture needs luminescence unit open.
Preferably, described driving method also comprises: when described luminescence unit is opened, utilize the anode voltage control circuit that is connected with the luminescence unit opened and cathode voltage control circuit regulate described in voltage difference between the anode of luminescence unit opened and negative electrode, with the luminosity of the luminescence unit opened described in changing.
A third aspect of the present invention provides a kind of light fixture, comprises above-described luminescent device.
Luminescent device provided by the present invention and drived control method thereof, in light fixture, luminescent device comprises multiple stacked luminescence unit, insulation is kept by arranging insulating barrier between adjacent two luminescence units, the color of the light that multiple luminescence unit can send is different, the anode jointed anode voltage control circuit of each luminescence unit, negative electrode connects cathode voltage control circuit, multiple voltage control circuit is connected one to one by the anode and/or negative electrode that make the whole luminescence units included by luminescent device, namely be parallel relationship between each luminescence unit, realize controlling the drive of multiple luminescence unit, thus utilize voltage control circuit control the unlatching of corresponding luminescence unit or close, the glow color needed can be obtained, and the switching of glow color can be carried out.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The first the concrete structure figure of the luminescent device that Fig. 1 provides for the embodiment of the present invention;
The second concrete structure figure of the luminescent device that Fig. 2 provides for the embodiment of the present invention;
The third concrete structure figure that the same luminescence unit inner anode of the luminescent device that Fig. 3 a provides for the embodiment of the present invention is formed prior to negative electrode;
The same luminescence unit inner cathode of the luminescent device that Fig. 3 b provides for the embodiment of the present invention is prior to the third concrete structure figure of anodic formation.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, below in conjunction with the accompanying drawing in the embodiment of the present invention, are clearly and completely described the technical scheme in the embodiment of the present invention.Obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, other embodiments all that those of ordinary skill in the art obtain under the prerequisite of not making creative work, all belong to the scope of protection of the invention.
The present embodiment provides a kind of luminescent device, comprising: multiple luminescence units stacked together, and each luminescence unit comprises anode, negative electrode and the luminescent layer between anode and negative electrode, and the color of the light that multiple luminescence unit can send is different; Be arranged between adjacent two luminescence units for keeping the insulating barrier of adjacent two luminescence unit mutually insulateds; At least one the anode voltage control circuit be connected with the anode of luminescence unit; At least one the cathode voltage control circuit be connected with the negative electrode of luminescence unit.
Wherein, the anode of multiple luminescence unit is all connected with same anode voltage control circuit, and the negative electrode of multiple luminescence unit is connected with multiple cathode voltage control circuit one to one; Or the anode of multiple luminescence unit is connected with multiple anode voltage control circuit one to one, the negative electrode of multiple luminescence unit is all connected with same cathode voltage control circuit; Or the anode of multiple luminescence unit is connected with multiple anode voltage control circuit one to one, the negative electrode of multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
Above-mentioned luminescent device passes through stacked together for multiple luminescence unit, the color of the light that multiple luminescence unit can send is different, insulation is kept by insulating barrier between adjacent two luminescence units, the anode of each luminescence unit is connected with an anode voltage control circuit, negative electrode is connected with a cathode voltage control circuit, thus individual luminescence unit is in parallel, makes it possible to independently drive multiple luminescence unit.Open by controlling at least one luminescence unit, the light display that can realize solid color or at least two kinds of color colour mixtures is shown, and can carry out the switching of different glow color.
The present embodiment specifically provides the concrete structure of three kinds of above-mentioned luminescent devices.As shown in Figure 1, for the present embodiment the first concrete structure figure of luminescent device is provided, this luminescent device is arranged in the luminescence unit 1 of bottom, anode 11 is in the bottom, and anode 11 exceeds the coverage of luminescent layer 12 and negative electrode 13, anode 11 exceeds the part of the coverage of luminescent layer 12 and negative electrode 13 for exceeding part; The anode 11 of the anode 11 being laminated in the luminescence unit 1 on the luminescence unit 1 being positioned at bottom and the luminescence unit 1 being positioned at bottom exceed partial electrical contact; The anode 11 being positioned at the luminescence unit 1 of bottom is connected with an anode voltage control circuit 3, and the negative electrode 13 of multiple luminescence unit 1 is connected with multiple cathode voltage control circuit 4 one to one.
It should be noted that, " being arranged in the luminescence unit 1 of bottom " described in the present embodiment refers to the luminescence unit that the whole luminescence units 1 included by a luminescent device are formed at first, relative, " being arranged in the luminescence unit 1 at top " refers to the luminescence unit that the whole luminescence units 1 included by a luminescent device are finally formed; " ... be in the bottom " refer to " ... " the rete formed at first in whole retes of the whole luminescence units 1 included by a luminescent device, contrary, " ... be in most top layer " refer to " ... " the last rete formed in whole retes of the whole luminescence units 1 included by a luminescent device.
The luminescent device of said structure, its luminescent layer 12 and negative electrode 13 is exceeded by making the anode 11 of bottom luminescence unit 1, be formed in the process of other luminescence unit 1 stacked on bottom luminescence unit 1 follow-up, the anode 11 of other luminescence unit 1 can exceed part contact by the anode 11 with bottom luminescence unit 1, realizes the electrical connection with the anode 11 of bottom luminescence unit 1.Now only the anode 11 of bottom luminescence unit 1 is connected an anode voltage control circuit 3, just can realize the control of anode 11 voltage to whole luminescence unit 1, anode 11 voltage of whole luminescence unit 1 is identical, simultaneously by the negative electrode 13 of each luminescence unit 1 is connected from different cathode voltage control circuits 4 respectively, realize the control respectively to the negative electrode 13 of each luminescence unit 1, and then the independence of realization to the voltage difference between the anode 11 of each luminescence unit 1 and negative electrode 13 controls.The luminescent device of this structure, the anode 11 of whole luminescence unit 1 shares same anode voltage control circuit 3, is conducive to simplifying device architecture, reduces device power consumption.
More specifically, be laminated in the luminescence unit 11 on bottom-emission unit 1 and need to can be " L " shape of falling down with the cross sectional shape of the anode 11 of anode 11 electrical contact of bottom-emission unit 1, comprise horizontal component and vertical portion, horizontal component covers on bottom-emission unit 1, vertical portion extends along the sidewall of bottom-emission unit 1, exceed part contact by what make the anode 11 of vertical portion and bottom-emission unit 1, realize the anode 11 of each luminescence unit 1 be laminated on bottom-emission unit 1 and the electrical connection of the anode 11 of bottom-emission unit.
It should be noted that, in order to ensure to be electrically insulated between a luminescence unit 1, insulating barrier 2 preferably extends with the extension of the anode 11 contacted with himself; Concrete, need if be laminated in the luminescence unit 11 on bottom-emission unit 1 to can be " L " shape of falling down with the cross sectional shape of the anode 11 of anode 11 electrical contact of bottom-emission unit 1, then the insulating barrier 2 contacted with them is also " L " shape of falling down.
In addition, insulating barrier 2 also has the flattening film layer before making to be formed at himself, and the rete for follow-up formation provides smooth growth interface, to improve the effect of film quality.
As shown in Figure 2, for the second concrete structure figure of the luminescent device that the present embodiment provides, this luminescent device is arranged in the luminescence unit 1 of bottom, negative electrode 13 is in the bottom, and negative electrode 13 exceeds the coverage of luminescent layer 12 and anode 11, negative electrode 13 exceeds the part of the coverage of luminescent layer 12 and anode 11 for exceeding part; The negative electrode 13 being laminated in the luminescence unit 1 on the luminescence unit 1 being positioned at bottom contacts with the part that exceeds of the negative electrode 13 of the luminescence unit 1 being positioned at bottom; The negative electrode 13 being positioned at the luminescence unit 1 of bottom is connected with a cathode voltage control circuit 4, and the anode 11 of multiple luminescence unit is connected with multiple anode voltage control circuit 3 one to one.
In the luminescent device of said structure, the negative electrode 13 of each luminescence unit 1 shares same cathode voltage control circuit 4, therefore the voltage of the negative electrode 13 of each luminescence unit 1 is identical, the anode 11 of each luminescence unit 1 is connected from different anode voltage control circuits 3 respectively, therefore by controlling the voltage that anode voltage control circuit 3 is applied to each anode 11 respectively, can realize the voltage difference between the anode 11 of each luminescence unit 1 and negative electrode 13.This luminescent device has structure advantage simple, low in energy consumption, is applicable to the ray structure that negative electrode 13 is formed prior to anode 11.
As shown in Figure 3 a and Figure 3 b shows, for the third concrete structure of the luminescent device that the present embodiment provides, the coverage of each rete of multiple luminescence units 1 of this luminescent device is identical, the anode 11 of multiple luminescence unit 1 is connected with multiple anode voltage control circuit 3 one to one, and the negative electrode 13 of multiple luminescence unit 1 is connected with multiple cathode voltage control circuit 4 one to one.The luminescent device of this structure can realize the independent control of anode 11 voltage to each luminescence unit 1, and the independent control of negative electrode 13 voltage to each luminescence unit 1 can be realized, thus the degree of freedom of the adjustable range of the driving voltage of each luminescence unit 1 and adjustment is larger, can meet the requirement higher to luminous mass (as: brightness, saturation, colourity etc.).
It should be noted that, the structure shown by Fig. 3 a is applicable to the ray structure that luminescence unit 1 Anodic 11 is formed prior to negative electrode 13, and the structure shown by Fig. 3 b is applicable to the ray structure that in luminescence unit 1, negative electrode 13 is formed prior to anode 11.
In addition, the present embodiment is only described for the luminescent device of above three kinds of concrete structures, in other embodiments of the invention, the anode 11 of each luminescence unit 1 is not limited to above three kinds with the connected mode of anode voltage control circuit 3 and negative electrode 13 with the connected mode of cathode voltage control circuit 4, such as: the anode 11 (or negative electrode 13) of a part of luminescence unit 1 can be made to share same anode voltage control circuit 3 (or cathode voltage control circuit 4), the anode 11 (or negative electrode 13) of another part luminescence unit 1 shares an other anode voltage control circuit 3 (or cathode voltage control circuit 4), or the anode 11 (or negative electrode 13) of a part of luminescence unit 1 can be made to share same anode voltage control circuit 3 (or cathode voltage control circuit 4), the anode 11 of another part luminescence unit 1 is connected with other multiple anode voltage control circuits 3 (or cathode voltage control circuit 4) respectively one to one, to simplify on the basis of device architecture in various degree, meeting the demand to different glow color.
The luminescent device that the present embodiment provides can be made as the luminescent device of two-sided bright dipping, now needs each rete of multiple luminescence unit 1 to be all set to transparent film layer; Or the luminescent device of end bright dipping can be made as, the rete that luminescence unit 1 bottom being now arranged in is in the bottom need be set to opaque rete, and being laminated in luminescence unit 1 rete be on the rete of the bottom being arranged in bottom all needs to be set to transparent film layer; Or the luminescent device ejecting light can be made as, the rete that the luminescence unit 1 being now arranged in top is in most top layer need be set to opaque rete, and the rete below the rete that the luminescence unit 1 being arranged in top is in most top layer all needs to be set to transparent film layer.
Further, if anode 11 is opaque rete, then can adopt transparent conductive material (as: ITO (Indium Tin Oxide, tin indium oxide), Graphene (Graphene), PEDOT:PSS (quanta point material) etc.) with the stacked structure of reflectorized material (as: Al), or the electric conducting material that can directly adopt reflection coefficient high is formed; If anode 11 is transparent rete, then the transparent conductive materials such as ITO, Graphene, PEDOT:PSS can be directly adopted to be formed; If negative electrode 13 is opaque rete, then electric conducting material (as: Al) that reflection coefficient is high can be adopted to be formed, or adopt transparent conductive material and the stacked structure of reflectorized material; If negative electrode 13 is transparent rete, then can adopt transparent conductive material (as: material such as ITO, magnesium silver alloy).
In the present embodiment, luminescent device preferably can comprise three luminescence units 1, glow respectively, green glow and blue light, thus the white that the color of light that luminescent device can send can be red, green, blue, red green colour mixture, red blue colour mixture, turquoise colour mixture, RGB colour mixture are formed; Or luminescent device preferably can comprise four luminescence units 1, glow respectively, green glow, blue light and gold-tinted, thus the white that the white that the color of light that luminescent device can send can be red, green, blue, Huang, red green colour mixture, red blue colour mixture, reddish yellow colour mixture, turquoise colour mixture, greenish-yellow colour mixture, blue yellow colour mixture, RGB colour mixture are formed, red greenish-yellow colour mixture, the yellow colour mixture of red indigo plant, turquoise yellow colour mixture, red, green, blue and yellow colour mixture are formed, the existence of Yellow light emitting unit 1 can significantly improve the colour gamut of the light that can send of luminescent device.
It should be noted that, the present embodiment only comprises red, green, blue three luminescence units for luminescent device or comprises red, green, blue and Huang Si luminescence unit is described, in other embodiments of the invention, the luminescence unit 1 of the light that can send other color can be set according to actual needs.
As shown in Figure 1, Figure 2, shown in Fig. 3 a and Fig. 3 b, in the luminescent device that the present embodiment provides, also can comprise a transparency carrier 5, multiple luminescence unit 1 is laminated on this transparency carrier 5, transparency carrier 5 can select transparent glass substrate, meet the Production requirement of rigid luminescent device, also polymeric transparent substrate (as: PI (Polyimide Film can be selected, polyimide film), PET (Polyethylene Terephthalate, PETG) film etc.), meet the Production requirement of luminescent device.
Further, transparency carrier 5 can with the substrate of anode 11 or the common integrated production of negative electrode 13, namely transparency carrier 5 can be the substrate carrying conductive film, as: the glass substrate carrying ITO, the pet substrate carrying ITO, carry the pet substrate etc. of Graphene, to omit the making of the rete of one deck luminescent device, shorten the cycle of manufacturing process.
The present embodiment additionally provides the drived control method for driving above-mentioned luminescent device, this drived control method is: when the glow color needed is a kind of in the glow color of single luminescence unit in luminescent device, the luminescence unit that the anode voltage control circuit that utilization is connected with the luminescence unit that can not send the light needing color and cathode voltage control circuit control to send the light needing color is closed, utilize the anode voltage control circuit that is connected with the luminescence unit that can send the light needing color and cathode voltage control circuit to control to send and need the luminescence unit of the light of color to open simultaneously,
When the glow color needed is the colour mixture of the glow color of at least two luminescence units in luminescent device, the luminescence unit utilizing the anode voltage control circuit that is connected with the luminescence unit that can not send the light forming the color that colour mixture needs and cathode voltage control circuit to control the light that can not send the color forming colour mixture needs is closed, utilize simultaneously the anode voltage control circuit that is connected with the luminescence unit that can send the light forming the color that colour mixture needs and cathode voltage control circuit control described in can send the light of the color forming described colour mixture needs luminescence unit open.
Utilize above-mentioned drived control method by means of only the mode of passive drive, the luminescent device that just the present embodiment can be made to provide sends the light of multiple monochrome or colour mixture, and the switching of different glow color can be realized, relative to adopting, the luminescent device of series parallel structure needs are active is combined the illumination that could realize multiple color with passive drive mode, and the type of drive that the present embodiment provides is simpler.
For luminescent device illustrated in fig. 1, its drived control method is described in detail below.
If desired luminescent device sends ruddiness, then anode voltage control voltage 3 can be utilized to apply a voltage to the anode 11 of red, green and blue three luminescence units 1 included by luminescent device; Close the cathode voltage control circuit 4 that is connected with the negative electrode 13 of green emitting unit 1 and the cathode voltage control circuit 4 be connected with the negative electrode 13 of blue-light-emitting unit 1, thus green emitting unit 1 and blue-light-emitting unit 1 not luminous; The cathode voltage control circuit 4 that utilization is connected with the negative electrode 13 of emitting red light unit 1 applies a voltage to the negative electrode 13 of emitting red light unit 1, thus emitting red light unit 1 sends ruddiness.
In like manner, luminescent device can be controlled and send green glow or blue light.
If desired luminescent device sends gold-tinted, because yellow can be mixed to form by red and green, anode voltage control voltage 3 therefore can be utilized to apply a voltage to the anode 11 of red, green and blue three luminescence units 1 included by luminescent device; Close the cathode voltage control circuit 4 be connected with the negative electrode 13 of blue-light-emitting unit 1, thus blue-light-emitting unit 1 is not luminous; The cathode voltage control circuit 4 that utilization is connected with the negative electrode 13 of emitting red light unit 1 applies a voltage to the negative electrode 13 of emitting red light unit 1, the cathode voltage control circuit 4 be connected with the negative electrode 13 of green emitting unit 1 applies a voltage to the negative electrode 13 of green emitting unit 1, thus emitting red light unit 1 sends ruddiness, green emitting unit 1 sends green glow, and ruddiness mixes the light that luminescent device is sent with green glow be yellow.
In like manner, luminescent device can be controlled and send the light of red blue colour mixture or the light of turquoise colour mixture.
If desired luminescent device sends white light, because white can be mixed to form by red, green and blueness, anode voltage control voltage 3 therefore can be utilized to apply a voltage to the anode 11 of red, green and blue three luminescence units 1 included by luminescent device, the cathode voltage control circuit 4 that utilization is connected with the negative electrode 13 of emitting red light unit 1 applies a voltage to the negative electrode 13 of emitting red light unit 1, the cathode voltage control circuit 4 be connected with the negative electrode 13 of green emitting unit 1 applies a voltage to the negative electrode 13 of green emitting unit 1, the cathode voltage control circuit 4 be connected with the negative electrode 13 of blue-light-emitting unit 1 applies a voltage to the negative electrode 13 of blue-light-emitting unit 1, thus emitting red light unit 1 sends ruddiness, green emitting unit 1 sends green glow, blue-light-emitting unit 1 sends blue light, ruddiness, the light that green glow and blue light make luminescent device send is in white.
Further, when luminescence unit 1 is opened, the anode voltage control circuit 3 that the luminescence unit 1 that can utilize and open is connected and cathode voltage control circuit 4 regulate the voltage difference between the anode 11 of the luminescence unit 1 opened and negative electrode 13, to change the luminosity of the luminescence unit 1 opened.
The present embodiment additionally provides a kind of light fixture comprising above-mentioned luminescent device, and this light fixture can carry out the illumination of the light of multiple color, and its glow color can switch between different colours, meets people to fixture color multiple demands.
The foregoing is only the specific embodiment of the present invention; but protection scope of the present invention is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses, the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection range of described claim.
Claims (10)
1. a luminescent device, is characterized in that, comprising:
Multiple luminescence units stacked together, each described luminescence unit comprises anode, negative electrode and the luminescent layer between described anode and described negative electrode, and the color of the light that described multiple luminescence unit can send is different;
Be arranged between adjacent two described luminescence units for keeping the insulating barrier of adjacent two described luminescence unit mutually insulateds;
At least one the anode voltage control circuit be connected with the anode of described luminescence unit;
At least one the cathode voltage control circuit be connected with the negative electrode of described luminescence unit;
Wherein, the anode of described multiple luminescence unit is all connected with same anode voltage control circuit, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one; Or,
The anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one, and the negative electrode of described multiple luminescence unit is all connected with same cathode voltage control circuit; Or,
The anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
2. luminescent device according to claim 1, is characterized in that, be arranged in the luminescence unit of bottom, anode is in the bottom, and anode exceeds the coverage of luminescent layer and negative electrode, and anode exceeds the part of the coverage of luminescent layer and negative electrode for exceeding part; Be positioned at described in being laminated in bottom luminescence unit on luminescence unit anode with described be positioned at bottom luminescence unit anode exceed partial electrical contact;
The described anode being positioned at the luminescence unit of bottom is connected with an anode voltage control circuit, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
3. luminescent device according to claim 1, is characterized in that, be arranged in the luminescence unit of bottom, negative electrode is in the bottom, and negative electrode exceeds the coverage of luminescent layer and anode, and negative electrode exceeds the part of the coverage of luminescent layer and anode for exceeding part; The negative electrode being positioned at the luminescence unit on the luminescence unit of bottom described in being laminated in contacts with the described part that exceeds being positioned at the negative electrode of the luminescence unit of bottom;
The described negative electrode being positioned at the luminescence unit of bottom is connected with a cathode voltage control circuit, and the anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one.
4. luminescent device according to claim 1, it is characterized in that, the coverage of each rete of described multiple luminescence unit is identical, the anode of described multiple luminescence unit is connected with multiple anode voltage control circuit one to one, and the negative electrode of described multiple luminescence unit is connected with multiple cathode voltage control circuit one to one.
5. the luminescent device according to any one of Claims 1 to 4, is characterized in that, each rete of described multiple luminescence unit is transparent film layer; Or,
The rete that luminescence unit bottom being arranged in is in the bottom is opaque rete, and the rete that the luminescence unit being arranged in bottom described in being laminated in is on the rete of the bottom is transparent film layer; Or,
The rete that the luminescence unit being arranged in top is in most top layer is opaque rete, described in be arranged in top luminescence unit be in most top layer rete below rete be transparent film layer.
6. the luminescent device according to any one of Claims 1 to 4, is characterized in that, described luminescent device comprises three luminescence units, and described three luminescence units glow respectively, green glow and blue light; Or described luminescent device comprises four luminescence units, described four luminescence units glow respectively, green glow, blue light and gold-tinted.
7. the luminescent device according to any one of Claims 1 to 4, is characterized in that, described luminescent device also comprises: a transparency carrier, and described multiple luminescence unit is laminated on described transparency carrier.
8. a drived control method for luminescent device, is characterized in that, for driving the luminescent device described in any one of claim 1 ~ 7, described drived control method is:
When the glow color needed is a kind of in the glow color of single luminescence unit in described luminescent device, utilize the anode voltage control circuit that is connected with the luminescence unit that can not send the light needing color and cathode voltage control circuit to control the described luminescence unit that can not send the light needing color to close, utilize simultaneously the anode voltage control circuit that is connected with the luminescence unit that can send the light needing color and cathode voltage control circuit control described in can send and need the luminescence unit of the light of color to open;
When the glow color needed is the colour mixture of the glow color of at least two luminescence units in described luminescent device, utilize the anode voltage control circuit that is connected with the luminescence unit that can not send the light forming the color that described colour mixture needs and cathode voltage control circuit control described in can not send the light of the color forming described colour mixture needs luminescence unit close, utilize simultaneously the anode voltage control circuit that is connected with the luminescence unit that can send the light forming the color that described colour mixture needs and cathode voltage control circuit control described in can send the light of the color forming described colour mixture needs luminescence unit open.
9. the drived control method of luminescent device according to claim 8, it is characterized in that, described driving method also comprises: when described luminescence unit is opened, utilize the anode voltage control circuit that is connected with the luminescence unit opened and cathode voltage control circuit regulate described in voltage difference between the anode of luminescence unit opened and negative electrode, with the luminosity of the luminescence unit opened described in changing.
10. a light fixture, is characterized in that, comprises the luminescent device described in any one of claim 1 ~ 7.
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