CN202759622U - Light-emitting diode circuit - Google Patents
Light-emitting diode circuit Download PDFInfo
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- CN202759622U CN202759622U CN 201220151874 CN201220151874U CN202759622U CN 202759622 U CN202759622 U CN 202759622U CN 201220151874 CN201220151874 CN 201220151874 CN 201220151874 U CN201220151874 U CN 201220151874U CN 202759622 U CN202759622 U CN 202759622U
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- emitting diode
- light
- light emitting
- circuit
- scan line
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Abstract
Provided is a light-emitting diode circuit, comprising multiple scanning lines and multiple light-emitting diode groups. Each light-emitting diode group has a first end and a second end, and at least has a first light-emitting diode unit and a second light-emitting diode unit. The first end is coupled with an anode end of the first light-emitting diode unit and a cathode end of the second light-emitting diode unit, respectively, while the second end is coupled with a cathode end of the first light-emitting diode unit and an anode end of the second light-emitting diode unit, respectively. A first end of each light-emitting diode group is coupled with one of the multiple scanning lines, while the second end is coupled with another of the multiple scanning lines. According to the light-emitting diode circuit of the utility model, light-emitting diodes can be arranged between the first scanning line and the second scanning line or between two first scanning lines or between two second scanning lines. Thereby, a maximum number of the light-emitting diodes can be driven by using a minimum number of scanning lines.
Description
Technical field
The utility model relates to a kind of circuit of LED, and particularly relates to the circuit of LED that all can be provided with light-emitting diode between a kind of wantonly two scan lines.
Background technology
Light-emitting diode is one of light source kind of extensively using at present,, illumination effect little except volume is good, the characteristic that also has environmental protection and energy saving, therefore existing many products such as individual lighting apparatus, large-scale demonstration billboard or backlight light source device have used light-emitting diode in a large number on the market.
In general, at least have one group of first scan line, one group of second scan line and several light-emitting diodes in traditional circuit of LED, the anode tap of each light-emitting diode is coupled in the first scanning on line, and the cathode terminal of each light-emitting diode is coupled in the second scanning on line.By this, the user can be poor by the operating voltage between control the first scan line and the second scan line, so that light-emitting diode can be luminous according to this.Yet if take traditional circuit of LED of two the first scan lines and two the second scan lines as example, traditional circuit of LED only can be controlled 4 light-emitting diodes.To control the light-emitting diode of same quantity, in the changeless situation of other equipment (for example drive circuit of scan line), if the scan line of same quantity can be controlled more light-emitting diode, then the one-tenth of circuit of LED should further reduce.
Therefore, for the scan line that makes same quantity is controlled more light-emitting diode, can see that on the market the connected mode with Fig. 1 arranges the circuit of LED of light-emitting diode at present.See also Fig. 1, traditional circuit of LED 9 has the first scan line 90(of many such as parallel scan line 90a, 90b, 90c), the second scan line 92(of many such as vertical scan line 92a, 92b, 92c) and a plurality of light-emitting diode group 940 ~ 948.At this, described a plurality of light-emitting diodes 940 ~ 948 can be according to the difference that couples scan line, and can operate individually.For instance, take light-emitting diode group 940 as example, light-emitting diode 940 is cathode terminal to be coupled in the first scan line 90a and anode tap is coupled on the second scan line 92a.When interrupteur SW a and the equal conducting of interrupteur SW d, the operating voltage of the second scan line 92a is raised to a default high voltage (for example VCC), and when the operating voltage on the first scan line 90a was lowered to a default low-voltage (for example GND), light-emitting diode 940 can be switched on and be luminous.
In other words, if equally take the circuit of LED of 3 the first scan lines and 3 the second scan lines as example, circuit of LED 9 shown in Fig. 1 can only be controlled 9 light-emitting diodes (light-emitting diode 940 ~ 948 as shown in Figure 1), in fact, this circuit of LED still is not that mode with full blast arranges light-emitting diode.Therefore, industry is needed badly a kind of when driving a large amount of light-emitting diodes, can be with the minimum scanning line driving circuit of LED of a plurality of light-emitting diodes.
The utility model content
The utility model is to provide a kind of circuit of LED, except light-emitting diode being arranged between the first scan line and the second scan line, light-emitting diode can also be arranged between two the first scan lines or two the second scan lines between, by this can be with the minimum the most a plurality of light-emitting diodes of scanning line driving.
The utility model embodiment provides a kind of circuit of LED, and this circuit of LED comprises multi-strip scanning line and a plurality of light-emitting diode group.Each light-emitting diode group has a first end and one second end, and have at least one first light emitting diode and one second light emitting diode in each light-emitting diode group, first end couples respectively the anode tap of the first light emitting diode and the cathode terminal of the second light emitting diode, and the second end couples respectively the cathode terminal of the first light emitting diode and the anode tap of the second light emitting diode.Wherein, the first end of each light-emitting diode group wherein and the second end that couple described multi-strip scanning line couples another in the described multi-strip scanning line.
In the utility model one example embodiment, wherein said multi-strip scanning line is divided into many first scan lines and many second scan lines, and described many first scan lines are driven by different drive circuits respectively from described many second scan lines.At this, wherein and the second end that has at least the first end of a light-emitting diode group to couple described many first scan lines couples wherein of described many second scan lines; At least in addition wherein and the second end that has the first end of a light-emitting diode group to couple described many first scan lines couples another in described many first scan lines; At least wherein and the second end that has the first end of a light-emitting diode group to couple described many second scan lines couples another in described many second scan lines.
Further, the first light emitting diode in each light-emitting diode group is in series by a plurality of light-emitting diodes, when the anode tap of the first light emitting diode and the voltage difference between the cathode terminal during greater than first conducting voltage, the described light-emitting diode in the first light emitting diode is all luminous.
Further, the second light emitting diode in each light-emitting diode group is in series by a plurality of light-emitting diodes, when the anode tap of the second light emitting diode and the voltage difference between the cathode terminal during greater than second conducting voltage, the light-emitting diode in the second light emitting diode is all luminous.
Further, when the quantity summation of scan line is L, and the quantity summation of the first all light emitting diodes and all the second light emitting diode is when being N, and then the relational expression of N and L is N=L
2-L, N and L are positive integer.
In addition, the utility model embodiment provides another kind of circuit of LED, has multi-strip scanning line and a plurality of light emitting diode.Wherein, all has a light emitting diode at least between wantonly two scan lines in described multi-strip scanning line.
Further, each light emitting diode is in series by a plurality of light-emitting diodes, and when the anode tap of light emitting diode and the voltage difference between the cathode terminal during greater than a conducting voltage, the light-emitting diode in the light emitting diode is all luminous.
Further, when the quantity summation of scan line is L, and the quantity summation of light emitting diode is when being N, and then the relational expression of N and L is N=L
2-L, N and L are positive integer.
In sum, circuit of LED of the present utility model can be provided with light-emitting diode between two scan lines arbitrarily, does not limit described two scan lines and whether belongs to same group.In other words, circuit of LED of the present utility model is except being arranged on light-emitting diode between the first scan line and the second scan line, light-emitting diode can also be arranged between two the first scan lines or two the second scan lines between, by this can be with the minimum the most a plurality of light-emitting diodes of scanning line driving.
For enabling further to understand feature of the present utility model and technology contents, see also following about detailed description of the present utility model and accompanying drawing, but these explanations and appended graphic the present invention that only is used for illustrating, but not claim scope of the present utility model is done any restriction.
Description of drawings
Fig. 1 is the circuit diagram of known circuit of LED.
Fig. 2 shows the circuit diagram of the circuit of LED of the utility model one embodiment.
Fig. 3 shows the circuit diagram of the circuit of LED of another embodiment of the utility model.
[main element symbol description]
1: circuit of LED
10,10a, 10b, 12,12a, 12b: scan line
14,140 ~ 149: light-emitting diode group
140a ~ 149a: first end
140b ~ 149b: the second end
1402 ~ 1494: light emitting diode
2: circuit of LED
20,20a, 20b, 22,22a, 22b: scan line
24,240a ~ 249a, 240b ~ 249b: light emitting diode
SWa ~ SWf, SW1 ~ SW4: switch
VCC: high voltage end
GND: low-voltage end
9: circuit of LED
90,90a, 90b, 90c, 92,92a, 92b, 92c: scan line
940 ~ 948: light emitting diode
Embodiment
［ embodiment of circuit of LED ］
Please refer to Fig. 2, Fig. 2 shows the circuit diagram of the circuit of LED of the utility model one embodiment.As shown in Figure 2, the circuit of LED 1 of present embodiment has multi-strip scanning line 10, multi-strip scanning line 12 and a plurality of light-emitting diode group 14.With the example shown in Fig. 2, scan line 10 also can be subdivided into scan line 10a, scan line 10b, scan line 12 also can be subdivided into scan line 12a, scan line 12b, and light-emitting diode group 14 can according to the difference that couples scan line, be subdivided into light-emitting diode group 140 ~ 149.Below respectively just each element of the circuit of LED 1 among Fig. 2 elaborate.
Described multi-strip scanning line 10 is respectively coupled at least one drive circuit with described multi-strip scanning line 12, so that the operating voltage that the drive circuit (not shown) produces can offer described a plurality of light-emitting diode group 14 by described multi-strip scanning line 10 and described multi-strip scanning line 12.On practice, scan line 10a, scan line 10b can be considered the scan line in first scan line group, and by one independently the drive circuit (not shown) control interrupteur SW 1, SW2 in this scan line group.In addition, scan line 12a, scan line 12b can be considered second scan line in the scan line group, and by another independently the drive circuit (not shown) control interrupteur SW 3, SW4 in this scan line group.Certainly, the utility model does not limit the drive circuit quantity of driven sweep line 10 and scan line 12, in affiliated technical field those of ordinary skill as can be known, if utilize the mode of timesharing, subregion gated sweep line, yet also can control described multi-strip scanning line 10 and scan line 12 with same drive circuit.
At this, the utility model does not limit the orientation of described multi-strip scanning line 10 and scan line 12, and namely scan line 10 can parallel or vertical scan line 12, perhaps also can form arbitrarily angled between scan line 10 and the scan line 12.In addition, the utility model does not limit material, shape and the manufacture of described multi-strip scanning line 10 and scan line 12 yet, as long as described multi-strip scanning line 10 and scan line 12 can be used as the wire of conduction usefulness, namely belongs to category of the present utility model.Certainly can optionally change material, shape and the manufacture of scan line 10 and scan line 12 in affiliated technical field those of ordinary skill.
Continuation is referring to Fig. 2, and described a plurality of light-emitting diode group 14 has comprised light-emitting diode group 140, light-emitting diode group 142, light-emitting diode group 144, light-emitting diode group 146, light-emitting diode group 148 and light-emitting diode group 149.For instance, light-emitting diode group 140 can have first end 140a and the second end 140b, and first end 140a couples scan line 10b, and the second end 140b couples scan line 12a.And light-emitting diode group 140 has comprised light emitting diode 1402 and light emitting diode 1404.First end 140a couples respectively the anode tap of light emitting diode 1402 and the cathode terminal of light emitting diode 1404, and the second end 140b couples respectively the cathode terminal of light emitting diode 1402 and the anode tap of light emitting diode 1404.
Angle from practical operation, when interrupteur SW 2 is connected to high voltage end and interrupteur SW 3 and is connected to low-voltage end, can carry relatively high operating voltage (for example VCC) on the scan line 10b, and on scan line 12a, can carry relatively low operating voltage (for example GND).At this, as long as the poor conducting voltage greater than light emitting diode 1402 of operating voltage on scan line 10b and the scan line 12a, then light emitting diode 1402 just can conducting and luminous.Otherwise, when interrupteur SW 2 is connected to low-voltage end and interrupteur SW 3 and is connected to high voltage end, can carry relatively low operating voltage (for example GND) on the scan line 10b, and on scan line 12a, can carry relatively high operating voltage (for example VCC).Similarly, if be applied to the poor conducting voltage greater than light emitting diode 1404 of operating voltage on scan line 12a and the scan line 10b, then light emitting diode 1404 equally can conductings and luminous.
Please note, although the utility model is to represent light emitting diode 1402 and light emitting diode 1404, in fact light emitting diode 1402(or light emitting diode 1404 with an independent light-emitting diode symbol individually in Fig. 2) can be in series by a plurality of light-emitting diodes.
Visibly different with front case is that circuit of LED 1 of the present utility model can be provided with light-emitting diode group 14 between the scan line (for example scan line 10a, scan line 10b and scan line 12a, scan line 12b) of two same group in office.As can be seen from Figure 2, light-emitting diode group 142 can have first end 142a and the second end 142b, and first end 142a couples scan line 10a, and the second end 142b couples scan line 10b.By this, light-emitting diode group 142 has demonstrated circuit of LED 1 of the present utility model can be among multi-strip scanning line 10, and optional two arrange light-emitting diode group.Similarly, light-emitting diode group 144 can have first end 144a and the second end 144b, and first end 144a couples scan line 12a, and the second end 144b couples scan line 12b.By this, light-emitting diode group 144 has demonstrated circuit of LED 1 of the present utility model equally can be among another organizes scan line 12, and optional two arrange light-emitting diode group.
In sum, because circuit of LED 1 of the present utility model only uses 2 drive circuits (4 scan line) just can control 6 light-emitting diode groups (i.e. 12 light emitting diodes), should understand in affiliated technical field those of ordinary skill, when the quantity summation of all scan lines is L(for example 4), and the quantity summation of all light emitting diodes is N(for example 12) time, then can put out a relational expression between N and the L in order is N=L
2-L, N and L are positive integer.On the contrary, in prior art, 2 drive circuits (6 scan line) only can be controlled 9 light emitting diodes, and obvious circuit of LED 1 of the present utility model is conservation and manufacturing cost effectively.
［ another embodiment of circuit of LED ］
Please refer to Fig. 3, Fig. 3 shows the circuit diagram of the circuit of LED of another embodiment of the utility model.As shown in Figure 3, identical with last embodiment is that the circuit of LED 2 of present embodiment has multi-strip scanning line 20, multi-strip scanning line 22 equally.Different from last embodiment is, the circuit of LED 2 of present embodiment does not have the light-emitting diode group that is connected in parallel mutually, connects light emitting diode 24 between two scan lines in office but have a plurality of dispersions.
Similarly, the light emitting diode 24 of present embodiment between the scanning linear that can be coupled in different groups, also can be coupled between the scanning linear of same group.For instance, can adhere to separately in the situation of different groups from scan line 22a, scan line 22b at scan line 20a, scan line 20b, the light emitting diode 240a of present embodiment has disclosed the example of (scan line 20b and scan line 22a) between the scanning linear that is coupled in different groups, and the light emitting diode 242a of present embodiment and light emitting diode 244a have disclosed the example between the scanning linear that is coupled in same group.That is to say that no matter be that present embodiment or last embodiment can utilize any two scan lines to drive lumination of light emitting diode fully, circuit of LED 2 of the present utility model is conservation and manufacturing cost equally effectively.
It should be noted that, the light-emitting diode group of last embodiment can be completed in advance, requirement according to the designer is coupled between wantonly two scan lines again, and then simplifies the manufacturing process of circuit of LED, and accelerates the manufacturing speed of circuit of LED.At this, although light emitting diode 24 quantity shown in Fig. 3 are identical with the light emitting diode quantity shown in Fig. 3, but present embodiment is not as limit, be present embodiment light emitting diode 24 not necessarily in pairs (one is just connecing the mode of a reversal connection) arrange between two scan lines in office, certainly can optionally change the quantity of light emitting diode 24 in affiliated technical field those of ordinary skill.
In sum, circuit of LED of the present utility model can be provided with two opposite polarity light-emitting diodes between two scan lines arbitrarily, does not limit described two scan lines and whether belongs to same group.In other words, circuit of LED of the present utility model is except being arranged on light-emitting diode between the first scan line and the second scan line, light-emitting diode can also be arranged between two the first scan lines or two the second scan lines between, by this can be with the minimum the most a plurality of light-emitting diodes of scanning line driving.
The above only is embodiment of the present utility model, and it is not to limit to claim scope of the present utility model.
Claims (9)
1. a circuit of LED is characterized in that, described circuit of LED comprises:
The multi-strip scanning line; And
A plurality of light-emitting diode group, each described light-emitting diode group has a first end and one second end, and have at least one first light emitting diode and one second light emitting diode in each described light-emitting diode group, described first end couples respectively the anode tap of described the first light emitting diode and the cathode terminal of described the second light emitting diode, and described the second end couples respectively the cathode terminal of described the first light emitting diode and the anode tap of described the second light emitting diode;
Wherein, the described first end of each described light-emitting diode group wherein and described the second end that couple described multi-strip scanning line couples another in the described multi-strip scanning line.
2. circuit of LED according to claim 1, it is characterized in that, described multi-strip scanning line is divided into many first scan lines and many second scan lines, and described many first scan lines are driven by different drive circuits respectively from described many second scan lines.
3. circuit of LED according to claim 2, it is characterized in that wherein and described the second end that has at least the described first end of a described light-emitting diode group to couple described many first scan lines couples wherein of described many second scan lines; At least in addition wherein and described the second end that has the described first end of a described light-emitting diode group to couple described many first scan lines couples another in described many first scan lines; At least wherein and described the second end that has the described first end of a described light-emitting diode group to couple described many second scan lines couples another in described many second scan lines.
4. circuit of LED according to claim 1, it is characterized in that, described the first light emitting diode in each described light-emitting diode group is in series by a plurality of light-emitting diodes, when the anode tap of described the first light emitting diode and the voltage difference between the cathode terminal during greater than first conducting voltage, the described light-emitting diode in described the first light emitting diode is all luminous.
5. circuit of LED according to claim 1, it is characterized in that, described the second light emitting diode in each described light-emitting diode group is in series by a plurality of light-emitting diodes, when the anode tap of described the second light emitting diode and the voltage difference between the cathode terminal during greater than second conducting voltage, the described light-emitting diode in described the second light emitting diode is all luminous.
6. circuit of LED according to claim 1, it is characterized in that, when the quantity summation of described scan line is L, and the quantity summation of all described the first light emitting diodes and all described the second light emitting diode is when being N, and then the relational expression of N and L is N=L
2-L, N and L are positive integer.
7. a circuit of LED is characterized in that, described circuit of LED comprises:
The multi-strip scanning line; And
A plurality of light emitting diodes;
Wherein, all has a described light emitting diode at least between wantonly two scan lines in described multi-strip scanning line.
8. circuit of LED according to claim 7, it is characterized in that, each described light emitting diode is in series by a plurality of light-emitting diodes, when the anode tap of described light emitting diode and the voltage difference between the cathode terminal during greater than a conducting voltage, the described light-emitting diode in the described light emitting diode is all luminous.
9. circuit of LED according to claim 7 is characterized in that, when the quantity summation of described scan line is L, and the quantity summation of described light emitting diode is when being N, and then the relational expression of N and L is N=L
2-L, N and L are positive integer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151874 CN202759622U (en) | 2012-04-11 | 2012-04-11 | Light-emitting diode circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220151874 CN202759622U (en) | 2012-04-11 | 2012-04-11 | Light-emitting diode circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202759622U true CN202759622U (en) | 2013-02-27 |
Family
ID=47738779
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220151874 Expired - Fee Related CN202759622U (en) | 2012-04-11 | 2012-04-11 | Light-emitting diode circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202759622U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115376472A (en) * | 2022-09-29 | 2022-11-22 | 惠科股份有限公司 | Backlight module, display module and electronic equipment |
-
2012
- 2012-04-11 CN CN 201220151874 patent/CN202759622U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115376472A (en) * | 2022-09-29 | 2022-11-22 | 惠科股份有限公司 | Backlight module, display module and electronic equipment |
| CN115376472B (en) * | 2022-09-29 | 2023-09-19 | 惠科股份有限公司 | Backlight module, display module and electronic equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130227 Termination date: 20160411 |