CN101894504B - Led display panel and display - Google Patents
Led display panel and display Download PDFInfo
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- CN101894504B CN101894504B CN 201010230159 CN201010230159A CN101894504B CN 101894504 B CN101894504 B CN 101894504B CN 201010230159 CN201010230159 CN 201010230159 CN 201010230159 A CN201010230159 A CN 201010230159A CN 101894504 B CN101894504 B CN 101894504B
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
- G09F9/302—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements characterised by the form or geometrical disposition of the individual elements
- G09F9/3026—Video wall, i.e. stackable semiconductor matrix display modules
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Abstract
The invention discloses an LED display panel and a display. In the LED display panel, a six-pin-packaged LED lamp is used as a display unit, wherein electrodes of different fundamental colors of the LED lamp are respectively powered by adopting different voltages. Through the invention, the power consumption of the LED display panel adopting the six-pin-packaged LED can be reduced.
Description
Technical field
The present invention relates to a kind of LED display panel and display.
Background technology
Fig. 1 is the synoptic diagram according to six pin encapsulated LED lamps of correlation technique.Fig. 2 is the synoptic diagram that six pin encapsulated LED lamps are supplied power according to correlation technique.In the drawings, 1 is Anode B (positive pole of blue primary), and 2 is Anode G (positive pole of green primary); 3 is Anode R (positive pole of red primary); 4 is Cathode B (negative pole of blue primary), and 5 is Cathode G (negative pole of green primary), and 6 is Cathode R (negative pole of red primary).
In correlation technique, LED display panel (display screen) adopts six pin encapsulated LED as shown in Figure 1 as single pixel, and the pixel permutation and combination through varying number becomes the LED display cell board.The power supply mode of single pixel is as shown in Figure 2 in the LED display cell board.Can know that by figure the anode of single pixel three-color light-emitting diode is connected in parallel, the supply voltage of so single pixel is same numerical value just.In order to guarantee that three-color light-emitting diode can normally show, the supply voltage of so single pixel must be selected according to the maximum VF (VFR or VFG or VFB) of light emitting diode in the three primary colours.
For six pin encapsulated LED lamps, the forward conduction voltage V of each primary colours light emitting diode
FBe to have bigger difference, red-green-blue diode forward forward voltage maximal value is about 4V.The V of constant-current device
IBe adjustable numerical value, V
I=VCC-V
FMAX, common V
IBe operated in 0.5 to 1.5V and can compare rationally (considering chip power-consumption and display effect), so the supply voltage of single pixel of current display screen is 5V (4+1).
Fig. 3 is the synoptic diagram according to the current return that single pixel in the six pin encapsulated LED lamps is supplied power of correlation technique.
VCC value 5V among the figure, the red primary current input terminal voltage V of constant current this moment controllable device
IR=VCC-V
FRThe green primary current input terminal voltage V of constant current controllable device
IG=VCC-V
FGThe blue primary current input terminal voltage V of constant current controllable device
IB=VCC-V
FB, consider that the forward conduction characteristic of LED three-color light-emitting can be known V
IR＞V
IG≈ V
IB, this part magnitude of voltage that exceeds can be distributed by red primary constant current controllable device through the mode of heat energy, brings corresponding work pressure also for simultaneously red primary constant current controllable device, its inner EMC is disturbed strengthen, and the EMI ability weakens.
To adopting the bigger problem of six pin LED encapsulated LED display panel power consumptions in the correlation technique, effective solution is not proposed as yet at present.
Summary of the invention
Propose the present invention to adopting the six pin LED encapsulated LED bigger problems of display panel power consumption in the correlation technique, for this reason, fundamental purpose of the present invention is to provide a kind of LED display panel and display, to address the above problem.
To achieve these goals, according to an aspect of the present invention, a kind of LED display panel is provided.
LED display panel according to the present invention adopts six pin encapsulated LED lamps as display unit, and wherein, the electrode of the different base colors of LED lamp adopts the different voltages with different power supply respectively.
Further, the LED lamp comprises positive pole (perhaps anode) pin of three primary colours and negative pole (perhaps negative electrode) pin of three primary colours, and wherein, the anodal pin of three primary colours is connected to different voltages with different respectively.
Further, the anode interconnects of the same primary colours of each LED lamp together.
Further, the anode of the same primary colours of each row LED lamp is interconnected at together to form LED anode supply bus separately in each LED lamp, and LED anode supply bus is connected to the output terminal of triode or metal-oxide-semiconductor.
Further, each negative electrode in each LED lamp is connected to constant current controllable device input end respectively.
Further, the negative electrode of the same primary colours of each LED lamp is interconnected at together.
Further, the negative electrode of the same primary colours of each the row LED lamp in each LED lamp is interconnected at together to form LED negative electrode power supply bus, and LED negative electrode power supply bus is connected to constant current controllable device input end.
To achieve these goals, according to a further aspect in the invention, a kind of light-emitting diode display is provided.This light-emitting diode display has any one above-mentioned LED display panel.
Through the present invention; The LED display panel that adopts six pin encapsulated LED lamps to form as display unit; Wherein, The electrode of the different base colors of LED lamp adopts the different voltages with different power supply respectively, has solved and has adopted the bigger problem of six pin LED encapsulated LED display panel power consumptions, and then reached the effect that reduces employing six pin LED encapsulated LED display panel power consumptions.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the synoptic diagram according to six pin encapsulated LED lamps of correlation technique;
Fig. 2 is the synoptic diagram that six pin encapsulated LED lamps are supplied power according to correlation technique;
Fig. 3 is the synoptic diagram according to the current return that single pixel in the six pin encapsulated LED lamps is supplied power of correlation technique;
Fig. 4 is the synoptic diagram that six pin encapsulated LED lamps are supplied power according to the embodiment of the invention;
Fig. 5 is the synoptic diagram to current return under the independently-powered situation of single pixel three primary colours in the six pin encapsulated LED lamps according to the embodiment of the invention;
Fig. 6 is the synoptic diagram according to the constant current controllable device of the embodiment of the invention;
Fig. 7 is the synoptic diagram according to the static scanning of the embodiment of the invention;
Fig. 8 is the synoptic diagram that is connected with triode according to the embodiment of the invention six pin encapsulated LED lamps;
Fig. 9 is the synoptic diagram that is connected with metal-oxide-semiconductor according to the embodiment of the invention six pin encapsulated LED lamps.
Embodiment
Need to prove that under the situation of not conflicting, embodiment and the characteristic among the embodiment among the application can make up each other.Below with reference to accompanying drawing and combine embodiment to specify the present invention.
According to embodiments of the invention, a kind of LED display panel and display are provided.
Fig. 4 is the synoptic diagram that six pin encapsulated LED lamps are supplied power according to the embodiment of the invention.
As shown in Figure 4, this LED display panel adopts six pin encapsulated LED lamps as display unit, and wherein the electrode of the different base colors of LED lamp adopts the different voltages with different power supply respectively.
Particularly, as shown in the figure, the positive pole 1 of blue primary links together, and is connected to voltage VCC-B, and the positive pole 2 of green primary links together, and is connected to voltage VCC-G, and the positive pole 3 of red primary links together, and is connected to voltage VCC-R.
In the present invention, the pixel power supply mode with LED TV display panel is designed to mode as shown in the figure.Can know that by figure the supply voltage of each primary colours light emitting diode of single pixel is separated processing, according to current return synoptic diagram under the independently-powered situation of Fig. 4 list pixel three primary colours, as shown in the figure again, can draw VCC-R=VFR+VIR; VCC-G=VFG+VIG; VCC-B=VFB+VIB; In this design, we get VIR=VIG=VIB=1V, VCC-R=3.5V, VCC-G=4.8V, VCC-B=4.8V.When be single pixel power supply and when be that single pixel conducting constant-current device output current can be realized the demonstration control of this pixel has been saved ((5-3.5)+(5-4.8)+(5-4.8))/5*3=12.7% for the power consumption of a pixel through control.
Thereby, can find out that from the foregoing description the present invention has reached the effect of the power consumption that reduces by six pin encapsulated LED TV display panels.
In above-mentioned LED display panel, the LED lamp can comprise the anodal pin of three primary colours and the negative pole pin of three primary colours, and wherein, the anodal pin of three primary colours is connected to different voltages with different respectively.
Fig. 5 is the synoptic diagram to current return under the independently-powered situation of single pixel three primary colours in the six pin encapsulated LED lamps according to the embodiment of the invention.
As shown in Figure 5, I
RBe the red primary current input terminal of constant current controllable device, I
GBe the green primary current input terminal of constant current controllable device, I
BBlue primary current input terminal for the constant current controllable device.
Fig. 6 is the synoptic diagram according to the constant current controllable device of the embodiment of the invention.
As shown in Figure 6, I is the current input terminal of controlled constant-current device, and O is the current output terminal of controlled constant-current device, and C is the current controling end of controlled constant-current device.V
ICurrent input terminal voltage for controlled constant-current device.
Fig. 7 is the synoptic diagram according to the static scanning of the embodiment of the invention; Fig. 8 is the synoptic diagram that is connected with triode according to the embodiment of the invention six pin encapsulated LED lamps; Fig. 9 is the synoptic diagram that is connected with metal-oxide-semiconductor according to the embodiment of the invention six pin encapsulated LED lamps.
To shown in Figure 9, the anode interconnects of the same primary colours of each LED lamp together like Fig. 7.The anode of the same primary colours of each row LED lamp is interconnected at together to form LED anode supply bus separately in each LED lamp, and LED anode supply bus is connected to the output terminal of triode or metal-oxide-semiconductor.
Each negative electrode in above-mentioned LED display panel in each LED lamp is connected to constant current controllable device input end respectively.To shown in Figure 9, the negative electrode of the same primary colours of each LED lamp is interconnected at together like Fig. 7.Preferably, the negative electrode of the same primary colours of each the row LED lamp in each LED lamp is interconnected at together to form LED negative electrode power supply bus, and LED negative electrode power supply bus is connected to constant current controllable device input end.
The present invention also has the following advantages through selecting the LED lamp of 6 pin packaged types for use: power supply is reasonable, and six pin LED will take three control pin; Be three primary colours R, G, the power end of B are separately independently; It is independently-powered to allow for three primary colours, different according to the pressure drop of three primary colours diode like this, just can design power supply rationally; The feed circuit that power consumption is minimum are realized the low power design theory.
As shown in Figure 7, LED lamp vccr, vccg, vccb are interconnected at together separately, form three tunnel independence LED anode supply VCCR, VCCG, VCCB.Every LED lamp is with three primary colours R, and G, B negative electrode are connected to constant current controllable device input end (like figure C1-1......C4-3), carry out the control of " point-to-point ", realize the demonstration of the area L ED pixel of controlling.
Fig. 8 and Fig. 9 are dynamic scan, and each row LED lamp is interconnected at vccr, vccg, vccb together separately, and forming one group of LED anode supply bus is L1-3, L1-2, L1-1, form N group LED anode supply bus LN-3, LN-2, LN-1 successively.These anode supply buses are wired to the output terminal of triode or metal-oxide-semiconductor (realizing the power supply and the controlled conducting of each anode supply bus of LED TV display panel).
Each is listed as LED lamp with three primary colours R, G, and B is interconnected at together with the primary colours negative electrode, forms the negative electrode control bus of one group of LED, forms M group LED cathodic control bus successively.These cathodic control buses are wired to constant current controllable device input end C1-1......CM-3; Under the control of display control circuit; Realize that each primary colours crystal grain of each LED flows through constant electric current in the controlled time, realize the demonstration of the area L ED pixel of controlling.
Triode and the metal-oxide-semiconductor of Fig. 8 and Fig. 9 are switching tube, and CONTROL-1 to CONTROL-N is the base stage B of triode among Fig. 8, and when base stage B electric current was 0, transistor collector C electric current was 0, are equivalent to switch and break off; When base stage B electric current is able to make triode saturated, be equivalent to switch closure.In like manner CONTROL is the grid G of metal-oxide-semiconductor among Fig. 9, because metal-oxide-semiconductor is a voltage controlled element, so mainly by its duty of gate source voltage decision.When gate source voltage Ugs cut-in voltage Ut, metal-oxide-semiconductor is in " disconnection " state, i.e. switch disconnection; When gate source voltage Ugs cut-in voltage Ut, metal-oxide-semiconductor is in " connection " state, i.e. switch closure.
LED is the current characteristics device, and promptly under the prerequisite of saturation conduction, its brightness changes along with change in current.The constant current controllable device is controlled the luminosity of LED through the electric current of control logic circuit modulated stream through LED.The constant current controllable device is all controlled the size of LED electric current of flowing through through control logic circuit output terminal C 1-1 to CM-3 among the figure, thereby controls the luminosity of LED.
The present invention also provides a kind of light-emitting diode display, and this light-emitting diode display has each above-mentioned LED display panel.Wherein this light-emitting diode display is the LED televisor.
From above description, can find out that the present invention can reduce the power consumption of LED display panel effectively.
The above is merely the preferred embodiments of the present invention, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.All within spirit of the present invention and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (8)
1. LED display panel; It is characterized in that, adopt six pin encapsulated LED lamps as display unit, wherein; The electrode of the different base colors of said LED lamp adopts the different voltages with different power supply respectively, and each negative electrode in each said LED lamp is connected to constant current controllable device input end respectively.
2. LED display panel according to claim 1 is characterized in that, said LED lamp comprises the anodal pin of three primary colours and the negative pole pin of three primary colours, and wherein, the anodal pin of said three primary colours is connected to different voltages with different respectively.
3. LED display panel according to claim 1 is characterized in that the anode interconnects of the same primary colours of each said LED lamp together.
4. LED display panel according to claim 3; It is characterized in that; The anode of the same primary colours of each row LED lamp is interconnected at together to form LED anode supply bus separately in each said LED lamp, and said LED anode supply bus is connected to the output terminal of triode or metal-oxide-semiconductor.
5. LED display panel according to claim 1 is characterized in that the negative electrode of the same primary colours of each said LED lamp is interconnected at together.
6. LED display panel according to claim 5; It is characterized in that; The negative electrode of the same primary colours of each the row LED lamp in each said LED lamp is interconnected at together to form LED negative electrode power supply bus, and said LED negative electrode power supply bus is connected to said constant current controllable device input end.
7. a light-emitting diode display is characterized in that, has each described LED display panel in the claim 1 to 6.
8. light-emitting diode display according to claim 7 is characterized in that, said light-emitting diode display is the LED televisor.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010230159 CN101894504B (en) | 2010-07-13 | 2010-07-13 | Led display panel and display |
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|---|---|---|---|
| CN 201010230159 CN101894504B (en) | 2010-07-13 | 2010-07-13 | Led display panel and display |
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| CN101894504A CN101894504A (en) | 2010-11-24 |
| CN101894504B true CN101894504B (en) | 2012-07-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018100252A1 (en) * | 2016-12-01 | 2018-06-07 | Lrx Investissement | Addressing mode and principle of construction of matrix screens for displaying colour images with quasi-static behaviour |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103854597B (en) * | 2012-11-29 | 2016-08-10 | 利亚德光电股份有限公司 | Light-emitting diode display and LED control system |
| CN103854596A (en) * | 2012-11-29 | 2014-06-11 | 利亚德光电股份有限公司 | Led display |
| CN103854598B (en) * | 2012-11-29 | 2016-08-10 | 利亚德光电股份有限公司 | Light-emitting diode display |
| US10925136B2 (en) | 2017-08-15 | 2021-02-16 | Savant Technologies Llc | Lighting apparatus, driving circuit and driving method thereof |
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| CN201716943U (en) * | 2010-07-13 | 2011-01-19 | 北京利亚德电子科技有限公司 | Led display panel and display |
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| CN101619815A (en) * | 2009-07-30 | 2010-01-06 | 幸琳 | LED unit, LED module and LED display device |
| CN101770748A (en) * | 2010-01-12 | 2010-07-07 | 北京利亚德电子科技有限公司 | Display panel scanning method of LED (light emitting diode) panel television |
| CN201698712U (en) * | 2010-01-12 | 2011-01-05 | 北京利亚德电子科技有限公司 | Scanning device of LED panel television display panel |
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| CN201716943U (en) * | 2010-07-13 | 2011-01-19 | 北京利亚德电子科技有限公司 | Led display panel and display |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2018100252A1 (en) * | 2016-12-01 | 2018-06-07 | Lrx Investissement | Addressing mode and principle of construction of matrix screens for displaying colour images with quasi-static behaviour |
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