CN103347323A - Single dot pixel light source of large-spacing LED display screen - Google Patents
Single dot pixel light source of large-spacing LED display screen Download PDFInfo
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- CN103347323A CN103347323A CN2013102012920A CN201310201292A CN103347323A CN 103347323 A CN103347323 A CN 103347323A CN 2013102012920 A CN2013102012920 A CN 2013102012920A CN 201310201292 A CN201310201292 A CN 201310201292A CN 103347323 A CN103347323 A CN 103347323A
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Abstract
Provided in the invention is a single dot pixel light source of a large-spacing LED display screen. The single dot pixel light source comprises three-path three-primary-color LED tube cores and a constant-current direct-current power supply with same power supplying; a chroma ratio of the three-path three-primary-color LED tube cores approaches 3:6:1; and three paths of output direct-current voltages of the constant-current direct-current power supply respectively are 5.4V, 5.4 V and 5.6V. A number ratio of the three-path three-primary-color LED tube cores is 3:4:2; three R-color LED tube cores with 1.8-V tube voltage drops are connected in series to form the first path; each two of four G-color LED tube cores with 2.7-V tube voltage drops are connected in series to from a first series connection group and a second series connection group, and then the first series connection group and the second series connection group are connected in parallel to form the second path; and two B-color LED tube cores with 2.8-V tube voltage drops are connected in series to form a third path. According to the invention, a divider resistor or/and a shunt resistor is/are not needed to be arranged; the loss of the constant-current direct-current power supply can be substantially reduced; 100% of lighting effects of the three-primary-color LED tube cores can be realized; and brightness of a single dot pixel can be increased obviously.
Description
Technical field
The present invention relates to LED display, particularly relate to a kind of a single point pixel light source of big spacing LED display.
Background technology
Existing some pel spacing is greater than big spacing light-emitting diode (the Light Emitting Diode of 40mm, initialism is LED) display screen, in order to guarantee that display screen reaches the brightness requirement of design, need to increase by red (Red, initialism is R), green (Green, initialism is G) and the brightness of a single point pixel light source formed of blue (Blue, initialism are B) three-primary color LED, every bit pixel light source will make up many monochromatic LEDs.The composition of many monochromatic LEDs is three road three-primary color LED tube cores, the first via is that R look LED tube core, the second tunnel is that G look LED tube core and Third Road are B look LED tube core, above-mentioned three road three-primary color LED tube cores are based on the colourity proportioning R of the principle of three primary colours: G: B is 3: 6: 1, by same constant current DC power supply, export three tunnel identical 5V direct voltages.Because the tube voltage drop of first via R look LED tube core is generally 2.2V, the tube voltage drop of the second road G look LED tube core and Third Road B look LED tube core generally is respectively 3.2V, and first via R tube core need be connected and one be regulated divider resistance, carries out dividing potential drop, could guarantee the LED operate as normal, as shown in Figure 1.Yet, the adjusting divider resistance is set, cause the loss of power to increase, and, based on the colourity proportioning of the LED of the principle of three primary colours be colour brightness than being R: G: B=3: 6: 1, Third Road B look LED tube core can only be brought into play 70% light efficiency, and brightness reduces.
Summary of the invention
Technical problem to be solved by this invention is the defective that remedies above-mentioned prior art, and a kind of a single point pixel light source of big spacing LED display is provided.
Technical problem of the present invention is solved by the following technical programs.
The a single point pixel light source of this big spacing LED display, comprise three road three-primary color LED tube cores and the constant current DC power supply that the same power supply of three road output dc voltages is arranged, the first via is that R look LED tube core, the second tunnel is G look LED tube core, Third Road is B look LED tube core, and described three road three-primary color LED tube cores are based on the colourity proportioning R of the principle of three primary colours: G: B is close to 3: 6: 1.
The characteristics of a single point pixel light source of this big spacing LED display are:
The first via output dc voltage of the constant current DC power supply of described same power supply is that 5.4V, the second road output dc voltage are 5.4V, and the Third Road output dc voltage is 5.6V, respectively to the first via, the second road and Third Road power supply;
The quantitative proportion R of described three road three-primary color LED tube cores: G: B is 3: 4: 2, wherein the first via is composed in series by the R look LED tube core that three tube voltage drops are 1.8V, the G look LED tube core that four tube voltage drops of secondary route are 2.7V is connected into the first series connection group and the second series connection group in twos, is composed in parallel by the first series connection group and the second series connection group, and Third Road is composed in series by the B look LED tube core that two tube voltage drops are 2.8V.
Technical problem of the present invention is solved by following further technical scheme.
Described R look LED tube core is the LED tube core of Japan's day Asia (Nichia) semiconductor lighting Co., Ltd product.
Described G look LED tube core is the LED tube core of Japan's day Asia (Nichia) semiconductor lighting Co., Ltd product.
Described B look LED tube core is the LED tube core of Japan's day Asia (Nichia) semiconductor lighting Co., Ltd product.
Described R look LED tube core is that the model of Japan's day Asia (Nichia) semiconductor lighting Co., Ltd product is the LED tube core of NSPR346KS.
Described G look LED tube core is that the model of Japan's day Asia (Nichia) semiconductor lighting Co., Ltd product is the LED tube core of NSPG346DS.
Described B look LED tube core is that the model of Japan's day Asia (Nichia) semiconductor lighting Co., Ltd product is the LED tube core of NSPB346DS.
Described constant current DC power supply is that supply power voltage is higher than R look LED tube core, G look LED tube core and the control gate voltage of B look LED tube core and the constant current DC power supply of tube voltage drop sum.
Described constant current DC power supply is that the model that Taiwan bright latitude (MEANWELLS) Science and Technology Co., Ltd. produces is the constant current DC power supply of SP-320-5.
Technical problem of the present invention is solved by following further technical scheme again.
Described big spacing LED display is that a pel spacing is greater than the LED display of 40mm.
The present invention's beneficial effect compared with prior art is:
The present invention needn't arrange dividing potential drop or/and shunt resistance can significantly reduce the loss of constant current DC power supply by same constant current DC power supply, makes the light efficiency of three-primary color LED tube core performance 100%, obviously increases the brightness of a single point pixel.The present invention can be widely used in a pel spacing greater than the big spacing LED display of the various composition forms of 40mm.
Description of drawings
Fig. 1 is that the first via of three tunnel three primary colors tube cores of the specific embodiment of the invention is formed schematic diagram;
Fig. 2 is the second road composition schematic diagram of three tunnel three primary colors tube cores of the specific embodiment of the invention;
Fig. 3 is that the Third Road of three tunnel three primary colors tube cores of the specific embodiment of the invention is formed schematic diagram
Fig. 4 is that the specific embodiment of the invention is applied in the circuit diagram in the big spacing LED display.
Embodiment
Below in conjunction with embodiment and contrast accompanying drawing the present invention will be described.
A kind of a single point pixel light source of the big spacing LED display shown in Fig. 1～4, comprise three road three-primary color LED tube cores and the constant current DC power supply that the same power supply of three road output dc voltages is arranged, the first via is that R look LED tube core, the second tunnel is G look LED tube core, Third Road is B look LED tube core, and three road three-primary color LED tube cores are based on the colourity proportioning R of the principle of three primary colours: G: B is close to 3: 6: 1.The constant current DC power supply is that the model that Taiwan bright latitude Science and Technology Co., Ltd. produces is the constant current DC power supply of SP-320-5, its supply power voltage is higher than control gate voltage and the tube voltage drop sum of R look LED tube core, G look LED tube core and B look LED tube core, and constant current chip model is MBI6024.
The first via of three road three-primary color LED tube cores, the R look LED tube core 1, R look LED tube core 2 and the R look LED tube core 3 that are 1.8V by tube voltage drop are composed in series, R look LED tube core 1, R look LED tube core 2 and R look LED tube core 3 are that the model that Japan inferior semiconductor lighting of day Co., Ltd produces is the R look LED tube core of NSPR346KS, the brightness of every R look LED tube core is 1208mcd～1712mcd, and the brightness after the combination is 3624mcd～5136mcd.
The second tunnel of three road three-primary color LED tube cores, be the G look LED tube core 4 of 2.7V by tube voltage drop, G look LED tube core 5 is connected into the first series connection group, the G look LED tube core 6 and the G look LED tube core 7 that are 2.7V by tube voltage drop are connected into the second series connection group, composed in parallel by the first series connection group and the second series connection group again, G look LED tube core 4, G look LED tube core 5, G look LED tube core 6 and G look LED tube core 7 are that the model that Japan inferior semiconductor lighting of day Co., Ltd produces is the G look LED tube core of NSPG346DS, the brightness of every G look LED tube core is 1950mcd～2760mcd, and the brightness after the combination is 7800mcd～11040mcd.
The Third Road of three road three-primary color LED tube cores, the B look LED tube core 9 and the B look LED tube core 8 that are 2.8V by tube voltage drop are composed in series, B look LED tube core 9 and B look LED tube core 8 are that the model that Japan inferior semiconductor lighting of day Co., Ltd produces is the B look LED tube core of NSPB346DS, the brightness of every B look LED tube core is 517mcd～735mcd, and the brightness after the combination is 1034mcd～1470mcd.
Obviously, the supply power voltage of every road monochromatic LED of the specific embodiment of the present invention is convenient to adopt the dc constant flowing power power supply near identical, and need not to increase divider resistance or/and shunt resistance, significantly reduce the loss of power, make the light efficiency of tube core performance 100%, obviously increase brightness.
Above content be in conjunction with concrete preferred implementation to further describing that the present invention does, can not assert that concrete enforcement of the present invention is confined to these explanations.For the general technical staff of the technical field of the invention; make some alternative or obvious modification that are equal to without departing from the inventive concept of the premise; and performance or purposes are identical, all should be considered as belonging to the scope of patent protection that the present invention is determined by claims of submitting to.
Claims (10)
1. a single point pixel light source of a big spacing LED display, comprise three road three-primary color LED tube cores and the constant current DC power supply that the same power supply of three road output dc voltages is arranged, the first via is that R look LED tube core, the second tunnel is G look LED tube core, Third Road is B look LED tube core, described three road three-primary color LED tube cores are based on the colourity proportioning R of the principle of three primary colours: G: B is close to 3: 6: 1, it is characterized in that:
The first via output dc voltage of the constant current DC power supply of described same power supply is that 5.4V, the second road output dc voltage are 5.4V, and the Third Road output dc voltage is 5.6V, respectively to the first via, the second road and Third Road power supply;
The quantitative proportion R of described three road three-primary color LED tube cores: G: B is 3: 4: 2, wherein the first via is composed in series by the R look LED tube core that three tube voltage drops are 1.8V, the G look LED tube core that four tube voltage drops of secondary route are 2.7V is connected into the first series connection group and the second series connection group in twos, is composed in parallel by the first series connection group and the second series connection group, and Third Road is composed in series by the B look LED tube core that two tube voltage drops are 2.8V.
2. a single point pixel light source of big spacing LED display as claimed in claim 1 is characterized in that:
Described R look LED tube core is the LED tube core that Japan inferior semiconductor lighting of day Co., Ltd produces.
3. a single point pixel light source of big spacing LED display as claimed in claim 1 is characterized in that:
Described G look LED tube core is the LED tube core that Japan inferior semiconductor lighting of day Co., Ltd produces.
4. a single point pixel light source of big spacing LED display as claimed in claim 1 is characterized in that:
Described B look LED tube core is the LED tube core that Japan inferior semiconductor lighting of day Co., Ltd produces.
5. the matching method of a single point pixel light source of big spacing LED display as claimed in claim 2 is characterized in that:
Described R look LED tube core is that the model that Japan inferior semiconductor lighting of day Co., Ltd produces is the LED tube core of NSPR346KS.
6. the matching method of a single point pixel light source of big spacing LED display as claimed in claim 3 is characterized in that:
Described G look LED tube core is that the model that Japan inferior semiconductor lighting of day Co., Ltd produces is the LED tube core of NSPG346DS.
7. the matching method of a single point pixel light source of big spacing LED display as claimed in claim 4 is characterized in that:
Described B look LED tube core is that the model that Japan inferior semiconductor lighting of day Co., Ltd produces is the LED tube core of NSPB346DS.
8. as a single point pixel light source of any described big spacing LED display in the claim 1～7, it is characterized in that:
Described constant current DC power supply is that supply power voltage is higher than R look LED tube core, G look LED tube core and the control gate voltage of B look LED tube core and the constant current DC power supply of tube voltage drop sum.
9. the matching method of a single point pixel light source of big spacing LED display as claimed in claim 8 is characterized in that:
Described constant current DC power supply is that the model that Taiwan bright latitude Science and Technology Ltd. produces is the constant current DC power supply of SP-320-5.
10. a single point pixel light source of big spacing LED display as claimed in claim 9 is characterized in that:
Described big spacing LED display is that a pel spacing is greater than the LED display of 40mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013102012920A CN103347323A (en) | 2013-05-27 | 2013-05-27 | Single dot pixel light source of large-spacing LED display screen |
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| CN2013102012920A CN103347323A (en) | 2013-05-27 | 2013-05-27 | Single dot pixel light source of large-spacing LED display screen |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899657A (en) * | 2020-09-04 | 2020-11-06 | 广州沣雷交通科技股份有限公司 | Soft light LED information display module, display screen and display screen control system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704807A (en) * | 2004-06-03 | 2005-12-07 | 三星Sdi株式会社 | LCD device |
| CN201122399Y (en) * | 2007-08-27 | 2008-09-24 | 重庆大学 | Outdoor full-color LED large screen display unit |
| JP2009044012A (en) * | 2007-08-09 | 2009-02-26 | Toshiba Lighting & Technology Corp | Led lighting device and led substrate module |
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- 2013-05-27 CN CN2013102012920A patent/CN103347323A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1704807A (en) * | 2004-06-03 | 2005-12-07 | 三星Sdi株式会社 | LCD device |
| JP2009044012A (en) * | 2007-08-09 | 2009-02-26 | Toshiba Lighting & Technology Corp | Led lighting device and led substrate module |
| CN201122399Y (en) * | 2007-08-27 | 2008-09-24 | 重庆大学 | Outdoor full-color LED large screen display unit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111899657A (en) * | 2020-09-04 | 2020-11-06 | 广州沣雷交通科技股份有限公司 | Soft light LED information display module, display screen and display screen control system |
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Application publication date: 20131009 |