CN205210749U - Public voltage control circuit - Google Patents
Public voltage control circuit Download PDFInfo
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- CN205210749U CN205210749U CN201521052552.3U CN201521052552U CN205210749U CN 205210749 U CN205210749 U CN 205210749U CN 201521052552 U CN201521052552 U CN 201521052552U CN 205210749 U CN205210749 U CN 205210749U
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Abstract
The utility model discloses a public voltage control circuit, including earthing terminal, power end and public voltage output end, still including connecting in parallel the earthing terminal with between the power end a first branch road and an at least second branch road, first branch road includes a slide rheostat, a slide rheostat's first end with the earthing terminal electricity is connected, a slide rheostat's second end with the power end electricity is connected, the second branch road includes the 2nd slide rheostat, the 2nd slide rheostat's first end with the earthing terminal electricity is connected, the 2nd slide rheostat's second end with the power end electricity is connected, public voltage output end with a slide rheostat's gleitbretter with the 2nd slide rheostat's gleitbretter electricity is connected. Gleitbretter through the slide rheostat in the circuit after parallelly connected of sliding and/or the 2nd slide rheostat's gleitbretter improve the adjustable accurate degree of the public voltage of liquid crystal display to some extent.
Description
Technical field
The utility model embodiment relates to common electric voltage regulation technology, particularly relates to a kind of common electric voltage regulating circuit.
Background technology
For LCDs, usually need stable common electric voltage Vcom, when the gap of common electric voltage Vcom and best common electric voltage is larger, LCDs will send flicker, affects display effect.
Under normal circumstances, the adjustment of slide rheostat realization to the common electric voltage of LCDs can be utilized, as shown in Figure 1, slide rheostat is connected between power end VDD and earth terminal GND, voltage between slide rheostat slide plate R1 and earth terminal is common electric voltage Vcom, by regulating the slide plate of slide rheostat R1, the value of the common electric voltage Vcom of output can be changed, but above-mentioned to utilize a slide rheostat can make the adjustment levels of precision of common electric voltage Vcom not high, usually only to reach change common electric voltage Vcom being regulated to 200mv at every turn, this easily cause regulate there is larger difference between common electric voltage Vcom and best common electric voltage, LCDs will be dodged very much and affect display effect.
Utility model content
The utility model provides a kind of common electric voltage regulating circuit, to realize the fine adjustment to LCDs common electric voltage.
The utility model embodiment provides a kind of common electric voltage regulating circuit, comprise earth terminal, power end and common electric voltage output terminal, also comprise and be connected in parallel on the first branch road between described earth terminal and described power end and at least one the second branch roads, described first branch road comprises the first slide rheostat, the first end of described first slide rheostat is electrically connected with described earth terminal, and the second end of described first slide rheostat is electrically connected with described power end; Described second branch road comprises the second slide rheostat, and the first end of described second slide rheostat is electrically connected with described earth terminal, and the second end of described second slide rheostat is electrically connected with described power end; Described common electric voltage output terminal is electrically connected with the slide plate of described first slide rheostat and the slide plate of described second slide rheostat.
Further, described second branch road also comprises the first resistance, and the first end of described first resistance is electrically connected with described earth terminal, and the second end of described first resistance is electrically connected with the first end of described second slide rheostat.
Further, also comprise the second resistance, the first end of described second resistance is electrically connected with described power end, and the second end of described second resistance is electrically connected with the second end of the second slide rheostat.
Further, also comprise the 3rd resistance, the first end of described 3rd resistance is electrically connected with described earth terminal, the second end of described 3rd resistance and the first end of described first resistance, and the first end electrical connection of described first slide rheostat.
Further, also comprise the 4th resistance, it is characterized in that, the first end of described 4th resistance is electrically connected with described power end, the second end of described 4th resistance and the first end of described second resistance, and the second end electrical connection of described first slide rheostat.
Further, the maximal value of described first resistance, described second slide rheostat is equal with the resistance of described second resistance.
Further, the first coil that radius is r1 is arranged to by described first branch road, and the two ends of described first coil are connected on flexible printed circuit board by the first pin and the second pin, to be electrically connected with described power end and described earth terminal respectively; The second coil that radius is r2 is arranged to by described second branch road, described second coil and described first coil concentric are arranged, and described radius r 2 is greater than described radius r 1, the two ends of described second coil are connected on described flexible printed circuit board by described first pin and described second pin, to be electrically connected with described power end and described earth terminal respectively; Second stiff end of the slide plate of described second slide rheostat on the first stiff end of the slide plate of described first slide rheostat on described first coil and described second coil connects together, be connected on described flexible printed circuit board by the 3rd pin, to be electrically connected with described common electric voltage output terminal; First free end of the slide plate of described first slide rheostat is connected electrically in described first branch road, and the second free end of the slide plate of described second slide rheostat is connected electrically in described second branch road.
Further, the first stiff end of the slide plate of described first slide rheostat is arranged on the center of circle of described first coil, and described first free end turns clockwise around the center of circle of described first coil, and is electrically connected with any point of described first coil; Described second coil is divided into described first resistance of connecting successively, described second slide rheostat and described second resistance, second stiff end of the slide plate of described second slide rheostat is arranged on the center of circle of described second coil, described second free end is rotated counterclockwise around the center of circle of described second coil, and is electrically connected with any point of described second slide rheostat.
Further, the first stiff end of the slide plate of described first slide rheostat is arranged on the center of circle of described first coil, and described first free end is rotated counterclockwise around the center of circle of described first coil, and is electrically connected with any point of described first coil; Described second coil is divided into described first resistance of connecting successively, described second slide rheostat and described second resistance, second stiff end of the slide plate of described second slide rheostat is arranged on the center of circle of described second coil, described second free end turns clockwise around the center of circle of described second coil, and is electrically connected with any point of described second slide rheostat.
Further, described first resistance and described second resistance are ink resistance.
The utility model regulates on the first branch road basis of common electric voltage by series connection between the powered end and the ground end, at least one the second branch roads in parallel; First branch road comprises the first slide rheostat, and the two ends of the first slide rheostat are electrically connected with power end and earth terminal; Second branch road comprises the second slide rheostat, and the two ends of the second slide rheostat are electrically connected with power end and earth terminal; Common electric voltage output terminal is electrically connected with the slide plate of described first slide rheostat and the slide plate of described second slide rheostat.The slide plate of first slide rheostat of a branch road adjustable degree of accuracy to LCDs common electric voltage is only had to increase to the adjustable levels of precision of LCDs common electric voltage than sliding by the slide plate of the first slide rheostat in the circuit after parallel connection of sliding and/or the slide plate of the second slide rheostat, and then effectively can reduce flicker, improve display effect.
Accompanying drawing explanation
Fig. 1 is the structural representation of common electric voltage regulating circuit in prior art;
Fig. 2 is the structural representation of the common electric voltage regulating circuit in the utility model embodiment one;
Fig. 3 is the structural representation of the common electric voltage regulating circuit in the utility model embodiment two;
Fig. 4 is the structural representation of the common electric voltage regulating circuit in the utility model embodiment three;
Fig. 5 is the structural representation of the common electric voltage regulating circuit in the utility model embodiment five.
Embodiment
For further setting forth the utility model for the technological means reaching predetermined utility model object and take and effect, below in conjunction with accompanying drawing and preferred embodiment, to according to the embodiment of a kind of common electric voltage regulating circuit that the utility model proposes, structure, feature and effect thereof, be described in detail as follows.
Embodiment one
The structural representation of a kind of common electric voltage regulating circuit that Fig. 2 provides for the utility model embodiment one, the present embodiment is applicable to situation about regulating the common electric voltage of LCDs, this circuit specifically comprises: earth terminal GND, power end VDD and common electric voltage Vcom output terminal and the first branch road be connected in parallel between earth terminal GND and power end VDD and at least one the second branch roads, first branch road comprises the first slide rheostat R1, the first end of the first slide rheostat R1 is electrically connected with earth terminal GND, second end of the first slide rheostat R1 is electrically connected with power end VDD,
In the embodiment depicted in figure 2, this common electric voltage regulating circuit only comprises second branch road, but in specific implementation process, this common electric voltage regulating circuit can further increase the adjustable levels of precision to common electric voltage Vcom by many second branch roads in parallel at the two ends of the first branch road.
Second branch road comprises the second slide rheostat R2, and the first end of the second slide rheostat R2 is electrically connected with earth terminal GND, and second end of the second slide rheostat R2 is electrically connected with power end VDD;
Common electric voltage Vcom is electrically connected with the slide plate of the first slide rheostat R1 and the slide plate of the second slide rheostat R2.
Common electric voltage Vcom not only can be regulated by the slide plate of the first slide rheostat R1 that slides, and can be regulated by the slide plate of the second slide rheostat R2 that slides, jointly can also be regulated by the slide plate of the slide plate of the first slide rheostat R1 that slides and the second slide rheostat R2 simultaneously.
The present embodiment regulates on the first branch road basis of common electric voltage by being connected between power end VDD and earth terminal GND, at least one the second branch roads in parallel; First branch road comprises the first slide rheostat R1, and the two ends of the first slide rheostat R1 are electrically connected with power end VDD and earth terminal GND; Second branch road comprises the second slide rheostat R2, and the two ends of the second slide rheostat R2 are electrically connected with power end VDD and earth terminal GND; Common electric voltage Vcom output terminal is electrically connected with the slide plate of the first slide rheostat R1 and the slide plate of the second slide rheostat R2.The slide plate adjustable levels of precision to LCDs common electric voltage of first slide rheostat R1 of a branch road is only had to increase to the adjustable levels of precision of LCDs common electric voltage than sliding by the slide plate of the first slide rheostat R1 in the circuit after parallel connection of sliding and/or the slide plate of the second slide rheostat R2.
Embodiment two
The structural representation of a kind of common electric voltage regulating circuit that Fig. 3 provides for the utility model embodiment two, the present embodiment is optimized the second branch road based on embodiment one, concrete, second branch road also comprises: the first resistance R3, the first end of the first resistance R3 is electrically connected with earth terminal GND, and second end of the first resistance R3 is electrically connected with the first end of the second slide rheostat R2.
Preferably, the second branch road also comprises the second resistance R4, and the first end of the second resistance R4 is electrically connected with power end VDD, and second end of the second resistance R4 is electrically connected with second end of the second slide rheostat R2.
Concrete, this programme is based on the scheme of embodiment one, carry out further optimization, on the basis of original second branch road, to connect the first resistance R3 at the earth terminal of the second slide rheostat R2, in the second branch road, the power end that connects of the second slide rheostat R2 has been connected the second resistance R4, now the second branch road comprises: the second slide rheostat R2, first resistance R3 and the second resistance R4, and incite somebody to action now the second branch road and the first branch circuit parallel connection, then by after the electrical connection of the slide plate of the slide plate of the second slide rheostat R2 and the first slide rheostat R1, as common electric voltage Vcom output terminal.
Now common electric voltage Vcom can be regulated by the slide plate of the slide plate of first slide rheostat that slides and/or second slide rheostat that slides.
The technical scheme of the present embodiment, second branch road in parallel on the first branch road between the powered end and the ground end, wherein second route second slide rheostat R2, first resistance R3 and the second resistance R4 is in series, due to the dividing potential drop effect of the first resistance R3 and the second resistance R4, by the slide plate of the first slide rheostat R1 in the circuit after parallel connection of sliding and/or the slide plate of the second slide rheostat R2, the adjustable levels of precision of LCDs common electric voltage is increased to the adjustable levels of precision of LCDs common electric voltage than only having in the second branch road during the second slide rheostat.
Embodiment three
The structural representation of a kind of common electric voltage regulating circuit that Fig. 4 provides for the utility model embodiment three, the present embodiment is optimized further the second branch road based on above embodiment, concrete, second branch road also comprises on the basis of above-mentioned two embodiments: also comprise the 3rd resistance R5, the first end of the 3rd resistance R5 is connected with earth terminal electricity GND, second end of the 3rd resistance R5 and the first end of the first resistance R3, and the first end electrical connection of the first slide rheostat R1.
Preferably, the second branch road also comprises the 4th resistance R6, and the first end of the 4th resistance R6 is electrically connected with power end VDD, second end of the 4th resistance R6 and the first end of the second resistance R4, and the second end electrical connection of the first slide rheostat R1.
Preferably, the maximal value of the first resistance R3, the second slide rheostat R2 is equal with the resistance of the second resistance R4.
The technical scheme of the present embodiment, second branch road in parallel on the first branch road between the powered end and the ground end, wherein second route second slide rheostat R2, first resistance R3 and the second resistance R4 is in series, and be in series with the 3rd resistance R5 at the second branch road of parallel connection and between the outside of the first branch road and earth terminal, and be in series with the 4th resistance R6 between power end, because the dividing potential drop of the 3rd resistance R5 and the 4th resistance R6 can realize improving further the adjustable levels of precision of LCDs common electric voltage than only having in the second branch road during the second slide rheostat to the adjustable levels of precision of LCDs common electric voltage by the slide plate of the first slide rheostat R1 in the circuit after slip parallel connection and/or the slide plate of the second slide rheostat R2, in addition, 3rd resistance R5 and the 4th resistance R6 can also play the effect of protection second slide rheostat.
Embodiment four
The present embodiment is based on the circuit of embodiment three, further restriction has been carried out to the resistance of each branch road, concrete, power end voltage is 9V, and the maximal value of the first slide rheostat resistance R1 is 1.2k Ω, and the resistance maximal value of the second slide rheostat R2 is 2K Ω, the resistance of the first resistance R3 is 2K Ω, the resistance of the second resistance R4 is 2K Ω, and the resistance of the 3rd resistance R5 is 1K Ω, and the resistance of the 4th resistance R6 is 1K Ω.
Certain position being arranged on the first slide rheostat R1 when the slide plate of maintenance first slide rheostat R1 is motionless, when the slide plate of the second slide rheostat R2 slides into the position of maximal value from the position of minimum value, the adjustable extent to common electric voltage when obtaining the slide plate of slip second slide rheostat.
Equally, certain position being arranged on the second slide rheostat R2 when the slide plate of maintenance second slide rheostat R2 is motionless, when first slide the slide plate that becomes device R1 slide into the position of maximal value from the position of minimum value time, the adjustable extent to common electric voltage Vcom when obtaining the slide plate of slip first slide rheostat.
Concrete, this gives when the slide plate of maintenance first slide rheostat R1 is arranged on the top of the first slide rheostat R1, when the slide plate of the second slide rheostat R2 is arranged on the top of the second slide rheostat R2, the second resistance R4 is shorted, the total current in circuit:
I
1＝9/(R6+(R2+R3)//R1+R5)＝3.079mA
Now, common electric voltage Vcom is:
Vcom
1＝9-I
1.R6＝5.921V
When the slide plate of maintenance first slide rheostat R1 is arranged on the top of the first slide rheostat R1, when the slide plate that second slides becomes device R2 is arranged on the bottom of the second slide rheostat R2, second resistance R4 and the second slide rheostat R2 is shorted, the total current now in circuit:
I
2＝9/(R6+R3//R1+R5)＝3.273mA
Now, common electric voltage Vcom is:
Vcom
2＝9-I
2.R6＝5.727V
Obtain like this, when the slide plate of the slide rheostat in the first branch road does not change in the top, when the position changing the slide plate of the second slide rheostat slides into bottom from the top, be equivalent to slide rheostat and slide into minimum resistance from maximum value, be now 0.2V to the adjustable extent of common electric voltage Vcom, minimum adjustable extent due to slide rheostat resistance is that slide rheostat slides into 1/10 of minimum resistance from maximum value, therefore, the adjustable levels of precision of slip slide rheostat to common electric voltage Vcom is exactly to the adjustable extent of common electric voltage Vcom when sliding into minimum resistance from slide rheostat from maximum value 1/10.Now can realize reaching 20mV to the adjustable levels of precision of common electric voltage Vcom.
When the slide plate of the second slide rheostat R2 in maintenance second branch road is arranged on the bottom of the second slide rheostat R2, when the slide plate of the first slide rheostat R1 is arranged on the bottom to this first slide rheostat R1, first resistance R3 is shorted, and the total current in circuit is:
I
3＝9/(R6+((R2+R4)//R1)+R5)＝3.079mA
Common electric voltage Vcom is:
Vcom
2＝I
3.R5＝3.079V
Obtain like this, when the slide plate of the slide rheostat in the second branch road does not change in bottom, when the position changing the slide plate of the first slide rheostat slides into bottom from the top, be equivalent to slide rheostat and slide into minimum resistance from maximum value, be now 2.6V to the adjustable extent of common electric voltage Vcom, minimum adjustable extent due to slide rheostat resistance is that slide rheostat slides into 1/10 of minimum resistance from maximum value, therefore, the adjustable levels of precision of slip slide rheostat to common electric voltage Vcom is exactly to the adjustable extent of common electric voltage Vcom when sliding into minimum resistance from slide rheostat from maximum value 1/10.Now can realize reaching 260mV to the adjustable levels of precision of common electric voltage Vcom.
By relatively can the adjustable extent of adjusted second slide rheostat to common electric voltage Vcom less, and can realize the adjustable levels of precision of common electric voltage Vcom higher.
Further, the resistance value of power end voltage and each resistance can be changed as required, realize the corresponding adjustable extent of common electric voltage Vcom, thus reach the corresponding adjustable levels of precision of common electric voltage Vcom.
The technical scheme of the present embodiment, power end voltage is set to 9V, the maximal value of the first slide rheostat resistance is 1.2K Ω, the maximal value of the second slide rheostat resistance is 2K Ω, the resistance R3 of the first resistance is 2K Ω, the resistance of the second resistance R4 is 2K Ω, the resistance 5 of the 3rd resistance R is 1K Ω, the resistance of the 4th resistance R6 is the concrete numerical value such as 1K Ω, then calculate when the slide plate of the first slide rheostat in the first branch road does not change, slide the slide plate of the second slide rheostat in the second branch road, be 0.2V to the adjustable extent of common electric voltage Vcom, thus can realize reaching 20mV to the adjustable levels of precision of common electric voltage Vcom, when the slide plate of the second slide rheostat in the second branch road does not change, slide the slide plate of the first slide rheostat in the first branch road, be 2.6V to the adjustable extent of common electric voltage Vcom, thus can realize reaching 260mV to the adjustable levels of precision of common electric voltage Vcom, achieve 10 times that the adjustable levels of precision of common electric voltage Vcom are reached to original adjustable levels of precision like this.
Embodiment five
The structural representation of the common electric voltage regulating circuit that Fig. 5 provides for the utility model embodiment five, wherein radius is arranged to by the first branch road is that the two ends of first coil 601, first coil 601 of r1 are connected on flexible printed circuit board by the first pin 603 and the second pin 604; The second coil 602, second coil 602 that radius is r2 is arranged to by second branch road and the first coil 601 concentric is arranged, and radius r 2 is greater than radius r 1, and the two ends of the second coil 602 are connected on flexible printed circuit board by the first pin 603 and the second pin 604; Second stiff end of the slide plate of the second slide rheostat 607 on the first stiff end of the slide plate of the first slide rheostat 605 on the first coil 601 and the second coil 602 connects together, and is connected on flexible printed circuit board by the 3rd pin 609; First free end 606 of the first slide rheostat 605 slide plate is connected electrically in the first branch road, and the second free end 608 of the second slide rheostat slide plate is connected electrically in the second branch road.
Preferably, slide plate first stiff end of the first slide rheostat 605 is arranged on the center of circle O of the first coil 601, and the first free end 606 turns clockwise around the center of circle O of the first coil 601, and is electrically connected with any point of the first coil 601; Second coil 602 is divided into the first resistance R3, the second slide rheostat 607 and the second resistance R4 that connect successively, second stiff end of the slide plate of the second slide rheostat 607 is arranged on the center of circle O of the second coil 602, second free end 608 is rotated counterclockwise around the center of circle of the second coil 602, and is electrically connected with any point of the second slide rheostat 607.
Concrete, first free end that can arrange the slide plate of the first slide rheostat 605 in the first branch road turns clockwise around the center of circle O of the first coil the size regulating and change the resistance of the first slide rheostat 605, and the second free end simultaneously arranging the slide plate of the second slide rheostat 607 is rotated counterclockwise the size of the resistance regulating the second slide rheostat 607 around the center of circle O of the second coil.
Further, the first stiff end of the slide plate of the first slide rheostat 605 is arranged on the center of circle O of the first coil, and the first free end 606 is rotated counterclockwise around the center of circle O of the first coil 601, and is electrically connected with any point of the first coil 601; Second coil 602 is divided into the first resistance R3, the second slide rheostat 607 and the second resistance R4 that connect successively, second stiff end of the slide plate of the second slide rheostat 607 is arranged on the center of circle O of the second coil, second free end 608 turns clockwise around the center of circle of the second coil 602, and is electrically connected with any point of the second slide rheostat 607.
Concrete, first free end that also can be set to the slide plate of the first slide rheostat 605 in the first branch road is rotated counterclockwise the size regulating and change the resistance of the first slide rheostat 605 around the center of circle O of the first coil, the second free end simultaneously arranging the slide plate of the second slide rheostat 607 turns clockwise around the center of circle O of the second coil the size of the resistance regulating the second slide rheostat 607.
Further, the first resistance R3 and the second resistance R4 is ink resistance.
The technical scheme of the present embodiment, by the first branch road in the common electric voltage regulating circuit of adjustable liquid crystal display display screen is arranged to the first coil that radius is r1, second branch road is arranged to the second coil that radius is r2, second coil and the first coil concentric are arranged, and radius r 2 is greater than radius r 1, and the first slide rheostat 605 is arranged in the first coil, be arranged in the second coil by the second slide rheostat 607, the two ends of the first coil and the second coil are connected on flexible printed circuit board by the first pin 603 and the second pin 604; Second stiff end of the slide plate of the second slide rheostat 607 on the first stiff end of the slide plate of the first slide rheostat 605 on the first coil and the second coil connects together, be connected on flexible printed circuit board by the 3rd pin 609, the adjustment to the first branch resistance can be realized by the first free end of the slide plate of first slide rheostat 605 that slides, the adjustment to the second branch resistance can be realized by the second free end of the slide plate of second slide rheostat 607 that slides.Can realize the adjustment of common electric voltage Vcom more accurate like this.
The said goods can perform the method that the utility model any embodiment provides, and possesses the corresponding functional module of manner of execution and beneficial effect.Above, it is only preferred embodiment of the present utility model, not any pro forma restriction is done to the utility model, although the utility model discloses as above with preferred embodiment, but and be not used to limit the utility model, any those skilled in the art, do not departing within the scope of technical solutions of the utility model, make a little change when the technology contents of above-mentioned announcement can be utilized or be modified to the Equivalent embodiments of equivalent variations, in every case be do not depart from technical solutions of the utility model content, according to any simple modification that technical spirit of the present utility model is done above embodiment, equivalent variations and modification, all still belong in the scope of technical solutions of the utility model.
Claims (10)
1. a common electric voltage regulating circuit, comprise earth terminal, power end and common electric voltage output terminal, it is characterized in that, also comprise and be connected in parallel on the first branch road between described earth terminal and described power end and at least one the second branch roads, described first branch road comprises the first slide rheostat, the first end of described first slide rheostat is electrically connected with described earth terminal, and the second end of described first slide rheostat is electrically connected with described power end;
Described second branch road comprises the second slide rheostat, and the first end of described second slide rheostat is electrically connected with described earth terminal, and the second end of described second slide rheostat is electrically connected with described power end;
Described common electric voltage output terminal is electrically connected with the slide plate of described first slide rheostat and the slide plate of described second slide rheostat.
2. common electric voltage regulating circuit according to claim 1, it is characterized in that, described second branch road also comprises the first resistance, and the first end of described first resistance is electrically connected with described earth terminal, and the second end of described first resistance is electrically connected with the first end of described second slide rheostat.
3. common electric voltage regulating circuit according to claim 2, is characterized in that, also comprises the second resistance, and the first end of described second resistance is electrically connected with described power end, and the second end of described second resistance is electrically connected with the second end of the second slide rheostat.
4. common electric voltage regulating circuit according to claim 3, it is characterized in that, also comprise the 3rd resistance, the first end of described 3rd resistance is electrically connected with described earth terminal, second end of described 3rd resistance and the first end of described first resistance, and the first end electrical connection of described first slide rheostat.
5. the common electric voltage regulating circuit according to claim 3 or 4, it is characterized in that, also comprise the 4th resistance, it is characterized in that, the first end of described 4th resistance is electrically connected with described power end, second end of described 4th resistance and the first end of described second resistance, and the second end electrical connection of described first slide rheostat.
6. common electric voltage regulating circuit according to claim 3, is characterized in that, the maximal value of described first resistance, described second slide rheostat is equal with the resistance of described second resistance.
7. common electric voltage regulating circuit according to claim 3, it is characterized in that, the first coil that radius is r1 is arranged to by described first branch road, the two ends of described first coil are connected on flexible printed circuit board by the first pin and the second pin, to be electrically connected with described power end and described earth terminal respectively; The second coil that radius is r2 is arranged to by described second branch road, described second coil and described first coil concentric are arranged, and described radius r 2 is greater than described radius r 1, the two ends of described second coil are connected on described flexible printed circuit board by described first pin and described second pin, to be electrically connected with described power end and described earth terminal respectively;
Second stiff end of the slide plate of described second slide rheostat on the first stiff end of the slide plate of described first slide rheostat on described first coil and described second coil connects together, be connected on described flexible printed circuit board by the 3rd pin, to be electrically connected with described common electric voltage output terminal; First free end of the slide plate of described first slide rheostat is connected electrically in described first branch road, and the second free end of the slide plate of described second slide rheostat is connected electrically in described second branch road.
8. common electric voltage regulating circuit according to claim 7, it is characterized in that, first stiff end of the slide plate of described first slide rheostat is arranged on the center of circle of described first coil, described first free end turns clockwise around the center of circle of described first coil, and is electrically connected with any point of described first coil; Described second coil is divided into described first resistance of connecting successively, described second slide rheostat and described second resistance, second stiff end of the slide plate of described second slide rheostat is arranged on the center of circle of described second coil, described second free end is rotated counterclockwise around the center of circle of described second coil, and is electrically connected with any point of described second slide rheostat.
9. common electric voltage regulating circuit according to claim 7, it is characterized in that, first stiff end of the slide plate of described first slide rheostat is arranged on the center of circle of described first coil, described first free end is rotated counterclockwise around the center of circle of described first coil, and is electrically connected with any point of described first coil; Described second coil is divided into described first resistance of connecting successively, described second slide rheostat and described second resistance, second stiff end of the slide plate of described second slide rheostat is arranged on the center of circle of described second coil, described second free end turns clockwise around the center of circle of described second coil, and is electrically connected with any point of described second slide rheostat.
10. common electric voltage regulating circuit according to claim 8 or claim 9, it is characterized in that, described first resistance and described second resistance are ink resistance.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521052552.3U CN205210749U (en) | 2015-12-16 | 2015-12-16 | Public voltage control circuit |
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|---|---|---|---|
| CN201521052552.3U CN205210749U (en) | 2015-12-16 | 2015-12-16 | Public voltage control circuit |
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| CN205210749U true CN205210749U (en) | 2016-05-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464535A (en) * | 2017-07-31 | 2017-12-12 | 惠州市德赛西威汽车电子股份有限公司 | The VCOM voltage regulator circuits and its method of a kind of range-controllable |
| CN114863893A (en) * | 2022-05-20 | 2022-08-05 | 信利光电股份有限公司 | VCOM voltage regulation method and circuit of display module |
-
2015
- 2015-12-16 CN CN201521052552.3U patent/CN205210749U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107464535A (en) * | 2017-07-31 | 2017-12-12 | 惠州市德赛西威汽车电子股份有限公司 | The VCOM voltage regulator circuits and its method of a kind of range-controllable |
| CN114863893A (en) * | 2022-05-20 | 2022-08-05 | 信利光电股份有限公司 | VCOM voltage regulation method and circuit of display module |
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Address after: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee after: Kunshan Longteng Au Optronics Co Address before: 215301, 1, Longteng Road, Kunshan, Jiangsu, Suzhou Patentee before: Kunshan Longteng Optronics Co., Ltd. |