CN100511674C - A side-lighting LED illumination lamp, illuminating method of backlight source and mobile phone - Google Patents
A side-lighting LED illumination lamp, illuminating method of backlight source and mobile phone Download PDFInfo
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- CN100511674C CN100511674C CNB2005100221734A CN200510022173A CN100511674C CN 100511674 C CN100511674 C CN 100511674C CN B2005100221734 A CNB2005100221734 A CN B2005100221734A CN 200510022173 A CN200510022173 A CN 200510022173A CN 100511674 C CN100511674 C CN 100511674C
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- 238000005286 illumination Methods 0.000 title claims description 6
- 238000000034 method Methods 0.000 title description 6
- 239000013078 crystal Substances 0.000 claims description 104
- 238000006243 chemical reaction Methods 0.000 claims description 5
- 239000002245 particle Substances 0.000 abstract 6
- 239000004065 semiconductor Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 241000218202 Coptis Species 0.000 description 1
- 235000002991 Coptis groenlandica Nutrition 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48257—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a die pad of the item
Abstract
This invention discloses one side light LED lamp structure and application, which comprises bowl cup and main light transistor, assistant light particles with anode connected to particle cathode, wherein, eh assistant light particle cathode is connected to particle anode; the main particle shall not light in wait mode and is work mode, the assistant light particle is in sleep status to retard LED attuning.
Description
[technical field]
The present invention relates to a kind of side-emitting LED illuminating lamp, backlight means of illumination and use the mobile phone of this side-emitting LED illuminating lamp.
[background technology]
Light-emitting diode (Light Emitting Diode is called for short LED) has life-span length, power saving, characteristics such as reaction speed is fast, reliability is high, environmental protection, safety.Along with development of technology, the brightness of LED promotes gradually, and white light-emitting diodes is also own through being developed gradually, for road has been opened up in the exploitation of new lighting source.Making the more technology of white light-emitting diodes now is to adopt single luminescent grain to produce white light, its major technique is at luminescent grain surface-coated layer of fluorescent powder layer, photostimulable phosphor layer by the luminescent grain generation, make its light that produces different wave length, again with the blend of colors of light that original luminescent grain sends with the generation white light.Side-emitting LED mainly is used on the mobile phone backlight, in order to protect luminescent grain, as shown in Figure 1, generally can be in luminescent grain 4 both sides, reverse parallel connection one general-purpose diode 5, when the 1st pin connects positive voltage, the 3rd pin connects negative voltage (perhaps), crystal grain 4 forward bias, the electric current crystal grain 4 of flowing through sends blue light, excites yellow fluorescent powder luminous, and white light is sent in synthetic back in the bowl cup, and protection diode 5 reverse bias have only faint leakage current to flow through; When the 1st pin connects negative voltage (perhaps), the 3rd pin connects positive voltage, and crystal grain 4 reverse bias have only faint leakage current process, can be not luminous, and protection diode 5 forward bias, electric current mainly flows through from diode 5.If the LED that mobile phone this kind of employing backlight method is made, when mobile phone is in standby mode, require the brightness of LED very low, the electric current that passes through also only needs about 1 milliampere, though have only very low brightness, crystal grain 4 is in luminance all the time, for the standby mode of mobile phone, obviously do not make full use of luminescent grain, but because LED is in luminance always, it is inevitable quickening decay; Certainly will cause the very fast decay of LED brightness, shorten the mobile phone life-span.
[summary of the invention]
Purpose of the present invention overcomes the deficiencies in the prior art exactly, and the side-emitting LED illuminating lamp that prolongs greatly in a kind of low cost, useful life at first is provided; Taking second place provides a kind of back lighting reliable, stable mobile phone backlight means of illumination; Provide a kind of backlight reliable, stable mobile phone at last.
For achieving the above object, the present invention proposes a kind of side-emitting LED chip, comprises the bowl cup and is encapsulated in the interior main light emission crystal grain of described bowl cup; Also comprise auxiliary light emission crystal grain, be packaged in the described bowl cup, described auxiliary light emission crystal grain is anodal to be connected with described main light emission crystal grain negative pole, described auxiliary light emission crystal grain negative pole is connected with described main light emission crystal grain is anodal, described main light emission crystal grain has first pin and second pin, described auxiliary light emission crystal grain is between described first pin and described second pin, under normal mode of operation, described first pin connects positive voltage, described second pin connects negative voltage or ground connection, described main light emission crystal grain forward bias, it is luminous to drive described main light emission crystal grain, described auxiliary light emission crystal grain reverse bias; Under standby mode, described first pin connects negative voltage or ground connection, and described second pin connects positive voltage, described main light emission reverse bias, and described auxiliary light emission crystal grain forward bias, it is luminous to drive described auxiliary light emission crystal grain.
Described auxiliary light emission crystal grain is the lower blue light crystal grain of brightness.
The present invention discloses a kind of mobile phone backlight means of illumination, be included in the step of backlight drive circuit driving main light emission crystal grain luminous lighting under the normal operating conditions, the step that also comprises auxiliary light emission crystal grain luminous lighting: under the holding state of mobile phone, backlight drive circuit pair provides low current with the auxiliary light emission crystal grain of described main light emission crystal grain reverse parallel connection, drives it and sends the low light level.
The present invention discloses a kind of mobile phone, comprises backlight, the backlight drive circuit that is electrically connected with backlight; Described backlight comprises the side-emitting LED illuminating lamp, and described side-emitting LED illuminating lamp comprises the bowl cup and is installed in the interior main light emission crystal grain of described bowl cup; Also comprise auxiliary light emission crystal grain, be packaged in the described bowl cup that described auxiliary light emission crystal grain is anodal to be connected with described main light emission crystal grain negative pole, described auxiliary light emission crystal grain negative pole is connected with described main light emission crystal grain is anodal; Under normal mode of operation, described backlight drive circuit provides running current to drive described main light emission crystal grain luminous lighting, and under standby mode, described backlight drive circuit provides weak current to drive described auxiliary light emission crystal grain and sends faint light.
Described auxiliary light emission crystal grain is the lower blue light crystal grain of brightness.
Owing to adopted above scheme, not luminous when main light emission crystal grain is at standby mode when using, also be main light emission crystal grain under the most of the time is in resting state, and send faint light by auxiliary light emission crystal grain; When mode of operation, auxiliary light emission crystal grain is in resting state, and luminous by main light emission crystal grain; The two is luminous in turn, and therefore protective effect each other can effectively delay the decay of LED.The led chip that uses this scheme to make, cost is low, and because the principal crystal grain decay delays greatly, its bright dipping is effective, uses backlight of the present invention and prolongs significantly useful life.
Use side-emitting LED illuminating lamp of the present invention, avoided shorten the useful life of mobile phone, improved the reliability and the useful life of complete machine because of backlight.
[description of drawings]
Fig. 1 is the principle schematic of prior art side-emitting LED chip;
Fig. 2 is the side-emitting LED structural representation according to making of the present invention;
Fig. 3 is the principle schematic according to making side-emitting LED of the present invention.
Fig. 4 is that a kind of among the present invention decides the voltage conversion circuit schematic diagram.
Fig. 5 is operation principle Fig. 1 that decides voltage conversion circuit of Fig. 4.
Fig. 6 is operation principle Fig. 2 that decides voltage conversion circuit of Fig. 4.
Fig. 7 is that a kind of among the present invention decides the current converter circuit schematic diagram.
Fig. 8 is operation principle Fig. 1 that decides current converter circuit of Fig. 7.
Fig. 9 is operation principle Fig. 2 that decides current converter circuit of Fig. 7.
[embodiment]
The invention will be further described below in conjunction with example.
As shown in Figure 2,1 is the LED positive pole, and 2 is auxiliary light emission crystal grain, and 3 is the LED negative pole, and 4 is main light emission crystal grain, and 6 is the bowl cup, and 7 is gold thread, and 8 is the crystal grain electrode.
Principle of the present invention as shown in Figure 3, difference is that 6 is not general-purpose diode, but adopt the lower blue light crystal grain of brightness, its principle as shown in Figure 3,2 is auxiliary light emission crystal grain among Fig. 3, when the 1st pin connects positive voltage, when the 3rd pin connects negative voltage (perhaps), give main light emission crystal grain 4 forward biased about 15 milliamperes operating current by backlight drive circuit, electric current is flowed through and 4 is sent blue light, excites yellow fluorescent powder luminous, white light is sent in synthetic back in the bowl cup, and auxiliary light emission crystal grain 2 reverse bias have only faint leakage current to flow through, can be not luminous; When the 1st pin connects negative voltage (perhaps), the 3rd pin connects positive voltage, and crystal grain 4 reverse bias have only faint leakage current process, can be not luminous, a forward biased electric current of about 1 milliampere is provided for auxiliary light emission crystal grain 2 by backlight drive circuit, drives it and send blue light, excite yellow fluorescent powder luminous, white light is sent in synthetic back in the bowl cup, because 2 of auxiliary light emission crystal grain are by about 1 milliampere electric currents, the brightness of its brightness during much smaller than operate as normal is fit to the standby mode of mobile phone.The LED that uses this kind scheme to make can't be luminous when standby mode owing to main light emission crystal grain, therefore can effectively delay the decay of LED.
The LED cost that uses this scheme to make is low, and bright dipping is effective, can effectively delay the decay of LED, prolongs useful life backlight.
Embodiment two: mobile phone of the present invention, in the mobile phone in the prior art, made improvement at its backlight, and the side-emitting LED illuminating lamp of backlight comprises the bowl cup and is installed in the interior main light emission crystal grain of described bowl cup; Auxiliary light emission crystal grain also is set, with main light emission crystal grain reverse parallel connection; Under normal mode of operation, backlight drive circuit provides running current to drive main light emission crystal grain luminous lighting, and under standby mode, backlight drive circuit provides weak current to drive auxiliary light emission crystal grain and sends faint light.The two is luminous in turn, and therefore protective effect each other can effectively delay the decay of LED, prolongs the useful life of backlight, improves the reliability of complete machine, prolongs the useful life of complete machine.
When adopting the LED illuminating lamp of made of the present invention, need in backlight drive circuit, set up the power supply direction conversioning circuit,, the invention provides different change-over circuits, as Fig. 4 and shown in Figure 7 for deciding voltage and deciding two kinds of different backlight driving methods of electric current.
Decide voltage conversion circuit as shown in Figure 4, wherein 11,12,13,14 pins connect the control chip pin, during high level, and the metal-oxide-semiconductor conducting.Its change-over circuit comprises first switching branches and the second switch branch road of parallel coupled between power supply and ground, first switching branches comprises the first electric-controlled switch Q1 and the 4th electric-controlled switch Q4 that is in series, one termination, 11 pin of first switching branches, another termination 14 pin, second switch branch road comprise the second electric-controlled switch Q2 and the 3rd electric-controlled switch Q3 that is in series; One end of side-emitting LED illuminating lamp is between the common contact of the first electric-controlled switch Q1 and the second electric-controlled switch Q2, and the other end of side-emitting LED illuminating lamp is between the common contact of the 3rd electric-controlled switch Q3 and described the 4th electric-controlled switch Q4.Its operation principle such as Fig. 5, shown in Figure 6, when being in normal mode of operation, Q1 and Q3 conducting, electric current flows to electronegative potential through Q1, D1, Q3, and principal crystal grain D1 is luminous, and auxiliary crystal grain D2 is not luminous; When being in standby mode, Q2 and Q4 conducting, electric current flows to electronegative potential through R5, Q4, D2, Q2, and auxiliary crystal grain D2 is luminous, principal crystal grain D1 is not luminous, because the metering function of R5 under the situation of same drive voltage, can make electric current very little, satisfy the requirement of standby mode, R5 can regulate according to actual conditions, if do not need, the resistance in then available 0 Europe replaces.
Decide current converter circuit as shown in Figure 7, wherein 11,12,13,14 pins connect the control chip pin equally, during high level, and the metal-oxide-semiconductor conducting.Its operation principle such as Fig. 8, shown in Figure 9, when being in normal mode of operation, Q1 and Q3 conducting, electric current flows to electronegative potential through Q1, D1, Q3 and Q1, D1, R5, and principal crystal grain D1 is luminous, and auxiliary crystal grain D2 is not luminous, during owing to conducting, the output resistance R of metal-oxide-semiconductor
DSVery little, electric current mainly flows into metal-oxide-semiconductor Q3, and the electric current that flows into R5 is very little, thereby the power consumption of R5 also can be very little, can ignore; When being in standby mode, Q2 and Q4 conducting, electric current flows to electronegative potential through Q4, D2, Q2 and Q4, R5, and auxiliary crystal grain D2 is luminous, and principal crystal grain D1 is not luminous, and because the shunting of R5, the electric current that flows to D2 is very little, can satisfy the requirement of standby mode.
This circuit can replace metal-oxide-semiconductor with triode, if mobile phone master chip pin driving force deficiency can connect inverter at 11,12,13,14 pins earlier, links to each other with the control chip pin again, and MOS conducting during low level like this ends during high level.
Claims (6)
1, a kind of side-emitting LED illuminating lamp comprises the bowl cup and is installed in the interior main light emission crystal grain of described bowl cup; It is characterized in that: also comprise auxiliary light emission crystal grain, be packaged in the described bowl cup, described auxiliary light emission crystal grain is anodal to be connected with described main light emission crystal grain negative pole, described auxiliary light emission crystal grain negative pole is connected with described main light emission crystal grain is anodal, described main light emission crystal grain has first pin and second pin, described auxiliary light emission crystal grain is between described first pin and described second pin, under normal mode of operation, described first pin connects positive voltage, described second pin connects negative voltage or ground connection, described main light emission crystal grain forward bias, it is luminous to drive described main light emission crystal grain, described auxiliary light emission crystal grain reverse bias; Under standby mode, described first pin connects negative voltage or ground connection, and described second pin connects positive voltage, described main light emission reverse bias, and described auxiliary light emission crystal grain forward bias, it is luminous to drive described auxiliary light emission crystal grain.
2, side-emitting LED illuminating lamp as claimed in claim 1 is characterized in that: described auxiliary light emission crystal grain is the lower blue light crystal grain of brightness.
3, a kind of mobile phone backlight means of illumination, it is characterized in that: be included in backlight drive circuit driving main light emission crystal grain luminous lighting and the non-luminous step of auxiliary light emission crystal grain under the normal operating conditions, described main light emission crystal grain has first pin and second pin, described auxiliary light emission crystal grain is connected anti-parallel to the two ends of described main light emission crystal grain, it is between described first pin and described second pin, when described first pin connects positive voltage, described second pin connects negative voltage or ground connection, give the forward biased operating current of described main light emission crystal grain by described backlight drive circuit, simultaneously described auxiliary light emission crystal grain reverse bias; The step that also comprises auxiliary light emission crystal grain luminous lighting under the standby status of mobile phone: described first pin connects negative voltage or ground connection, described second pin connects positive voltage, described main light emission crystal grain reverse bias, a forward biased operating current is provided for auxiliary light emission crystal grain by backlight drive circuit, it is luminous to drive described auxiliary light emission crystal grain.
4, a kind of mobile phone comprises backlight, the backlight drive circuit that is electrically connected with backlight; Described backlight comprises the side-emitting LED illuminating lamp, and described side-emitting LED illuminating lamp comprises the bowl cup and is installed in the interior main light emission crystal grain of described bowl cup; It is characterized in that: also comprise auxiliary light emission crystal grain, be packaged in the described bowl cup that described auxiliary light emission crystal grain is anodal to be connected with described main light emission crystal grain negative pole, described auxiliary light emission crystal grain negative pole is connected with described main light emission crystal grain is anodal; Described main light emission crystal grain has first pin and second pin, described auxiliary light emission crystal grain is between described first pin and described second pin, under normal mode of operation, described first pin connects positive voltage, described second pin connects negative voltage or ground connection, forward biased operating current is provided for described main light emission crystal grain by described backlight drive circuit, described auxiliary light emission crystal grain reverse bias of while, under standby mode, described first pin connects negative voltage or ground connection, described second pin connects positive voltage, described main light emission crystal grain reverse bias, a forward biased operating current is provided for described auxiliary light emission crystal grain by backlight drive circuit, described auxiliary light emission crystal grain is luminous.
5, mobile phone as claimed in claim 4 is characterized in that: described auxiliary light emission crystal grain is the lower blue light crystal grain of brightness.
6, mobile phone as claimed in claim 4, it is characterized in that: described backlight drive circuit comprises change-over circuit, described change-over circuit output is connected with described side-emitting LED illuminating lamp two ends respectively, is used for the direction of the curtage of the described side-emitting LED illuminating lamp of conversion driving.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100221734A CN100511674C (en) | 2005-11-25 | 2005-11-25 | A side-lighting LED illumination lamp, illuminating method of backlight source and mobile phone |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100221734A CN100511674C (en) | 2005-11-25 | 2005-11-25 | A side-lighting LED illumination lamp, illuminating method of backlight source and mobile phone |
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| Publication Number | Publication Date |
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| CN1971907A CN1971907A (en) | 2007-05-30 |
| CN100511674C true CN100511674C (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100221734A Active CN100511674C (en) | 2005-11-25 | 2005-11-25 | A side-lighting LED illumination lamp, illuminating method of backlight source and mobile phone |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011103786A1 (en) | 2011-06-09 | 2012-12-13 | Osram Opto Semiconductors Gmbh | Optoelectronic semiconductor chip, display with such a semiconductor chip and use of such a semiconductor chip or a display |
| CN105782821A (en) * | 2016-04-29 | 2016-07-20 | 京东方科技集团股份有限公司 | LED (Light-Emitting diode), backlight module and display device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837995A (en) * | 1996-11-25 | 1998-11-17 | Alan Y. Chow | Wavelength-controllable voltage-phase photodiode optoelectronic switch ("opsistor") |
| CN1399347A (en) * | 2002-08-04 | 2003-02-26 | 叶关荣 | Long-life integrated LED device |
| CN1458700A (en) * | 2002-05-13 | 2003-11-26 | 诠兴开发科技股份有限公司 | Purple red light-emitting diode |
-
2005
- 2005-11-25 CN CNB2005100221734A patent/CN100511674C/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5837995A (en) * | 1996-11-25 | 1998-11-17 | Alan Y. Chow | Wavelength-controllable voltage-phase photodiode optoelectronic switch ("opsistor") |
| CN1458700A (en) * | 2002-05-13 | 2003-11-26 | 诠兴开发科技股份有限公司 | Purple red light-emitting diode |
| CN1399347A (en) * | 2002-08-04 | 2003-02-26 | 叶关荣 | Long-life integrated LED device |
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| CN1971907A (en) | 2007-05-30 |
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Address after: 518119 No.1 Yan'an Road, Kuiyong street, Dapeng New District, Shenzhen City, Guangdong Province Patentee after: BYD Semiconductor Co.,Ltd. Address before: 518119 No.1 Yan'an Road, Kwai Chung street, Dapeng New District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN BYD MICROELECTRONICS Co.,Ltd. |