Utility model content
To solve the above-mentioned problems, the embodiment of the present disclosure provides a kind of driving circuit comprising：
Multiple pixel units arranged in arrays；At least one scan line, pixel unit described in adjacent rows share oneScan line；The scan line is respectively to the pixel unit of the i-th row input driving voltage V1, to the pixel of i+1 rowThe driving voltage V of unit input2, the driving voltage V1, driving voltage V2Polarity is opposite；At least one data line, per dataLine is connected with the corresponding row pixel unit；Controller connect with the scan line, the data line, is used for simultaneouslyControl the scan line, the sequential export of the data line.
Further, the pixel unit includes：
Pixel electrode；
Switch element comprising：Grid, drain electrode, source electrode；The grid is connect with the scan line, the drain electrode, source electrodeIn one of connect, another connect with the pixel electrode with the data line；
Public electrode wiring is oppositely arranged with the pixel electrode to form storage.
Further, switch element described in the pixel unit of the i-th row is n-type thin film transistor；I+1 rowSwitch element described in the pixel unit is p-type thin film transistor.
Further, further include：
Scan line driver is connect with the controller, at least one scan line simultaneously；
Datawire driver；It connect with the controller, at least one data line simultaneously.
Another embodiment of the disclosure also provides a kind of liquid crystal display, including：It includes the array substrate being oppositely arranged, coloured silkColo(u)r filter substrate, and the liquid crystal layer that is set between the array substrate, colored filter substrate, the array substrate packetIt includes：At least one scan line；At least one data line, it is arranged in a crossed manner with the scan line；First pixel unit is arranged in instituteState the infall of data line and the scan line；First pixel unit includes the first pixel electrode and first switching element,First pixel electrode connects the data line and the scan line by the first switching element；Second pixel unit,Infall in the data line and the scan line is set；Second pixel unit is opened including the second pixel electrode and secondElement is closed, second pixel electrode connects the data line and the scan line by the second switch element；Wherein, instituteIt states the second pixel unit and first pixel unit is located at adjacent rows and shares a scan line；Described firstThe on off state of switch element and the second switch element is opposite.
Further, the first switching element is n-type thin film transistor, and the second switch element is that p types film is brilliantBody pipe.
Further, first pixel electrode and second pixel electrode are located at opposite the two of the scan lineSide and the opposite sides for being located at data line described in same.
Further, first pixel electrode and second pixel electrode are located at opposite the two of the scan lineSide and the opposite side for being located at adjacent two data lines.
Further, the array substrate further includes public electrode wiring, with first pixel electrode, described secondPixel electrode is oppositely arranged to form storage.
Further, further include：
Scan line driver is connect at least one scan line；
Datawire driver is connect at least one data line
Controller is connect with the scan line driver, the datawire driver, to control the scanning line drivingThe sequential export of device, the datawire driver.
The type of the driving circuit of the present embodiment, its switch element of the pixel unit of adjacent rows is different, driving voltage poleProperty on the contrary, the input driving voltage property of one scan line of control can control the pixel unit of adjacent rows, greatly reduce scanningThe quantity and occupied area of line can be that pixel unit concede more spaces so that aperture opening ratio increases, the equal resolution the case whereUnder, effectively improve brightness.
Specific implementation mode
In the following, the disclosure is discussed in detail in conjunction with specific embodiments.
The present embodiment provides a kind of driving circuit of application in a liquid crystal display, can greatly save the quantity of scan lineAnd occupied area, improve the aperture opening ratio of pixel unit.
In conjunction with shown in Fig. 1 a, this driving circuit 10 includes：Multiple pixel units 11 arranged in arrays, scan line 131,Data line 151, controller 17.The scan line 131, data line 151 are arranged in a crossed manner, and the pixel unit 11, which is set to, states dataThe infall of line 151 and the scan line 131.
Wherein, there is multi-strip scanning line 131 in the driving circuit 10 of array substrate (not shown), these scan lines131 can for example be all connected on scanner driver 13, to obtain the driving voltage of the offer of scanner driver 13.For example, the controlDevice 17 processed can be connect by the scanner driver 13 with the scan line 131, can be driven by the scanning at the time of defaultDynamic device 13 is inputted to the scan line 131 presets polar driving voltage.
In the present embodiment, the shared scan line 131 of the pixel unit 11 of adjacent rows, i.e. the i-th row (such asA line in odd-numbered line) pixel unit 11, i+1 row (such as a line in even number line) the pixel unit 11 distinguishIt is arranged in the both sides of same scan line 131, and connects same scan line 131 simultaneously.The scan line 131 is respectively to i-thThe capable pixel unit 11 inputs driving voltage V1, i+1 row the pixel unit 11 input driving voltage V2, describedDriving voltage V1With driving voltage V2Polarity is opposite；The scan line 131 can input different driving voltages in different moments.ItsMiddle i is positive integer.
Similarly, multiple data lines 151 are also equipped on the driving circuit 10 of array substrate (not shown), thisA little data lines 151 can be for example connected on a data driver 15, to obtain the charge information of the offer of data driver 15.OftenData line 151 is connected with the corresponding row pixel unit 11.For example, the pixel unit 11 of same row can compartment of terrain, pointIt is not connected on 151 on same data line, the same side of same data line 151 can also be all connected to.The controller17 can be connect by the data driver 15 with the data line 151, can pass through the data driver at the time of default15 input preset charge information to the data line 151.
It connect controller 17 with the scan line driver 13, the datawire driver 15, to control the scanningThe sequential export of line drive 13, the datawire driver 15.
Fig. 1 b are another structural schematic diagram of the present embodiment driving circuit, and Fig. 1 c are P partial enlargement structural representations in Fig. 1 aFigure.
In conjunction with Fig. 1 b, in 11 array of pixel unit of the present embodiment, each pixel unit 11 includes：Pixel electrode 111 is openedClose element (thin film transistor (TFT), TFT) 112, public electrode wiring 113, capacitor (not shown).
Wherein, in conjunction with shown in Fig. 1 c, Fig. 1 d, the switch element (TFT) 112 includes：Grid 112a, drain electrode 112b, sourcePole 112c；The grid 112a is connect with the scan line 131, the drain electrode 112b, in source electrode 112c one of with the numberAccording to the connection of line 151, another it is connect with the pixel electrode 111.
Preferably, it controls low and high level in order to allow the scan line 131 to pass through and controls the switch element that do not go together112, the conduction type that the switch element 112 that do not go together can be arranged is different.Such as it can enable in the pixel unit 11 of odd-numbered lineThe switch element 112 is n-type thin film transistor 112N；Switch element 112 described in the pixel unit 11 of even number line is pType thin film transistor (TFT) 112P.When scan line 131 inputs to the two row pixel units 11 that are connected the driving voltage V of positive polarity1When,N-type thin film transistor 112N can then be connected, and p-type thin film transistor 112P is closed；Similarly, when scan line 131The driving voltage V of negative polarity is inputted to the two row pixel units 11 connected2When, p-type thin film transistor 112P can then be connected, andN-type thin film transistor 112N is then closed.Such scan line can control the on and off of two row pixel units.It is of course also possible to which it is n-type thin film transistor to enable switch element in the pixel unit of even number line；It is switched in the pixel unit of odd-numbered lineElement is p-type thin film transistor, then adjusts matching driving voltage and can also realize disclosure purpose.
Wherein, the driving voltage V1Higher than the common voltage V in the pixel unitAcomIt is defined as the height electricity of positive polarityPressure, the driving voltage V2Less than the common voltage V in the pixel unitAcomIt is defined as the low-voltage of negative polarity.
The public electrode wiring 113 is oppositely arranged with the pixel electrode 111, to form a storage Cst,At the time of picture being updated next time so that charged voltage can be remained to.
In the matrix of pixel cells of the present embodiment, the type of its switch element of the pixel unit of adjacent rows is different, drivingPolarity of voltage subtracts significantly on the contrary, the input driving voltage property of one scan line of control can control the pixel unit of adjacent rowsThe quantity and occupied area of few scan line can be that pixel unit concedes more spaces so that aperture opening ratio increases, in equal resolutionIn the case of, effectively improve brightness.
Another embodiment of the disclosure provides a kind of driving method of driving circuit, and in conjunction with shown in Fig. 2, Fig. 2 is applied to figureScanning signal on the pixel unit of 1a and data-signal sequence diagram, it includes step to drive the driving method of circuit as shown in Figure 1aSuddenly：
First, the power supply of driving circuit is opened so that each pixel electrode is in energized state.
Then, under the control of described control unit 17, the scan line s (i) in the scanner driver 13 is made to existFirst moment t1The high voltage V of positive polarity is inputted to the pixel unit of i-th row (may be, for example, a line in odd-numbered line)1, makeIt is connected with the pixel unit of the i-th row of the scan line s (i) connection.Wherein, i is positive integer.Optionally, strange in the present embodimentIts switch element of several rows of pixel unit can be N-shaped TFT, as driving voltage V1Higher than common voltage VAcomWhen, N-shaped TFT canIt is opened.And the switch element (being, for example, p-type TFT) for the i+1 row being connect simultaneously with scan line s (i) is closed.
Meanwhile data line D (j) charges to jth row pixel unit in the data driver 15, and the charge information is protectedThere are i-th row, jth arrange pixel unit storage Cst in, corresponding i-th row, jth row pixel unit obtainIt must charge.Wherein, j is positive integer.
Further, under the control of described control unit 17, make the scan line s in the scanner driver 13(i) in the second moment t2The low electricity of negative polarity is inputted to the pixel unit of the i+1 row (may be, for example, a line in even number line)Press V2, the pixel unit of the i+1 row connected with the scan line s (i) is made to be connected.Optionally, the pixel list of i+1 rowSwitch element can be p-type TFT in member, as driving voltage V2Less than common voltage VAcomWhen, p-type TFT can be opened.And thisWhen, even if the pixel unit of the i-th row and the pixel unit of i+1 row are all connected with the scan line s (i), but due to the picture of the i-th rowSwitch element is N-shaped TFT, driving voltage V in plain unit1With driving voltage V2Polarity in the pixel unit of the i-th row on the contrary, switchElement still remains off.
Then, the pixel unit charging that data line D (j) is arranged to jth in the data driver 15, and the charge information quiltIt is stored in the storage Cst of the i+1 row, the pixel unit that jth arranges, the pixel that corresponding i+1 row, jth arrangeUnit is charged.And the pixel unit of i-th row, jth row remains off, and can not be charged by data line, protectsOriginal charge information is held to picture refreshing next time.
So analogize, controlled by scanner driver, scan line s (i+1) can be respectively in third moment t3, the 4th moment t4,Driving voltage V1, the driving voltage V inputted respectively2's；And the pixel unit charging that data line D (j) is arranged to jth, and the chargingInformation is respectively in third moment t3Be saved in the described i-th+2 row, jth row pixel unit storage Cst in, withAnd in the 4th moment t4It is saved in the storage Cst of the described i-th+3 row, the pixel unit that jth arranges；Corresponding i-th+The pixel unit of 2 rows, jth row and the i-th+3 row, jth row is charged.So reach and the pixel unit selection that do not go together is ledIt is logical, so that the pixel unit of conducting is received the charge information of data line input, different images can be shown under coordinating by backlight.
For the pixel unit of other row, other rows, driving principle is similar.
In the driving circuit of the present embodiment, the type of its switch element of the pixel unit of adjacent rows is different, driving voltagePolarity is on the contrary, can control the on and off of the pixel unit of adjacent rows using a scan line.The driving circuit of this implementationThe quantity and occupied area that scan line can be greatly reduced substantially increase opening for pixel unit in the case of equal resolutionMouth rate.
The another embodiment of the disclosure provides a kind of liquid crystal display 300 comprising the array substrate 320 that is oppositely arranged, colorColo(u)r filter substrate 340, and the liquid crystal layer being set between the array substrate 320, colored filter substrate 340 is (in figureIt is not shown), the array substrate 320 is provided with driving circuit 30.In the present embodiment, array substrate 320 may be, for example, film crystalline substanceBody pipe array substrate.
As shown in Figure 3a, 3b, this driving circuit 30 includes：Multiple pixel units 31 arranged in arrays, scan line331, data line 351, controller 37.The scan line 131, data line 151 are arranged in a crossed manner, and the pixel unit 11, which is set to, to be statedThe infall of data line 151 and the scan line 131.
Wherein, there is multi-strip scanning line 331 in the driving circuit 30 of array substrate 320, these scan lines 331 can be such asIt is all connected on scanner driver 33, to obtain the driving voltage of the offer of scanner driver 33.For example, the controller 37 can lead toThe scanner driver 33 is crossed to connect with the scan line 331, can at the time of default by the scanner driver 33 to instituteIt states the input of scan line 331 and presets polar driving voltage.
In the present embodiment, the shared scan line 331 of the pixel unit 31 of adjacent rows, i.e. the i-th row (such as it is strangeSeveral rows a line) the first pixel unit, i+1 row (such as a line of even number line) the second pixel unit be separately positioned on togetherThe both sides of one scan line 331, and same scan line 331 is connected simultaneously.Preferably, the scan line 331 is respectively to the i-th rowFirst pixel unit 31 input driving voltage V1, i+1 row second pixel unit 31 input driving voltageV2, the driving voltage V1With driving voltage V2Polarity is on the contrary, the scan line 331 can export different drives at different timesDynamic voltage；Wherein i is positive integer.
Similarly, multiple data lines 351 are also equipped on the driving circuit 30 of array substrate 320, these data lines 351It can for example be connected on a data driver 35, to obtain the charge information of the offer of data driver 35.Per data line 351 withThe corresponding row pixel unit 31 connects.For example, the pixel unit 31 of same row can compartment of terrain, be connected to sameOn 351 on data line, the same side of same data line 351 can also be all connected to.The controller 37 can pass through the numberConnect with the data line 351 according to driver 35, can at the time of default by the data driver 35 to the data lineThe 351 preset charge informations of input.
It connect controller 37 with the scan line driver 33, the datawire driver 35, to control the scanningThe sequential export of line drive 33, the datawire driver 35.
Fig. 3 b are the structural schematic diagram of a pixel unit, and Fig. 3 c are the equivalent circuit of a pixel unit.In conjunction with Fig. 3 b,Shown in Fig. 3 c, in the pixel unit two-dimensional array of the present embodiment, each pixel unit 31 includes：Pixel electrode 311, switch element(thin film transistor (TFT), TFT) 312, public electrode wiring 313, capacitor (not shown).
Wherein, the structure of the switch element (TFT) 312 can refer to shown in Fig. 1 c, and this embodiment is not repeated.
Preferably, it controls low and high level in order to allow the scan line 331 to pass through and controls the switch element that do not go together312, the conduction type difference for the switch element 312 that do not go together can be set and keep on off state opposite.Such as odd-numbered line can be enabledSwitch element 312 described in the pixel unit 31 is n-type thin film transistor 312N, the institute of i+1 row (being, for example, even number line)It is p-type thin film transistor 312P to state switch element 312 described in pixel unit 31.When scan line 331 to simultaneously connection two rowsPixel unit 31 inputs the driving voltage V of positive polarity1When, n-type thin film transistor 312N can then be connected, and p-type thin film transistor312P is closed；Similarly, the driving of negative polarity is inputted to two row pixel units 31 of connection simultaneously when scan line 331Voltage V2When, p-type thin film transistor 312P can then be connected, and n-type thin film transistor 312N is then closed.Certainly,It is n-type thin film transistor that switch element in the pixel unit of even number line, which can be enabled,；Switch element is p in the pixel unit of odd-numbered lineType thin film transistor (TFT), then adjust matching driving voltage and can also realize disclosure purpose.
Wherein, the driving voltage V1Higher than the common voltage V in the pixel unitAcomIt is defined as the height electricity of positive polarityPressure, the driving voltage V2Less than the common voltage V in the pixel unitAcomIt is defined as the low-voltage of negative polarity.
The public electrode wiring 313 is oppositely arranged with the pixel electrode 311, to form a storage Cst, withJust at the time of allowing charged voltage that can remain to update picture next time, in conjunction with shown in Fig. 3 c.
Liquid crystal molecule (not shown) is also filled between array substrate 320, colored filter substrate 340.In colourFilter sheet base plate 340 in face of liquid crystal molecule side be equipped with common electrode layer (not shown), then each pixel unit 31 fromIt can be regarded as pressing from both sides one layer of liquid crystal molecule between pixel electrode and common electrode layer in structure, which can be equivalent to a liquid crystalCapacitance CLC.In practical applications, this liquid crystal capacitance CLCCan not by voltage maintained until next time TFT pipe again to this point charging,It (is illustrated with the frame updating frequency of general 60Hz, need to keep about 16ms) at the time of updating picture data again.That is, working asTFT pipes are to this liquid crystal capacitance CLCWhen charged, voltage can not be kept 16ms by it.So, voltage has variation, showsThe grayscale shown will be incorrect, therefore, in the driving circuit, can add a storage capacitors Cst (can be for example by pixel electrode again311 are formed with 313 cabling of public electrode wiring), so as to allow charged voltage can remain to update next time picture whenIt carves.
The switch element type of adjacent rows pixel unit is not in the liquid crystal display of the present embodiment, in driving circuitSame, driving voltage polarity is on the contrary, can be by controlling the input driving voltage property of a scan line to control the picture of adjacent rowsPlain unit on and off.The driving circuit of this implementation greatly reduces the quantity and occupied area of scan line, can be pixel unitConcede more spaces so that aperture opening ratio increases, and in the case of equal resolution, effectively improves brightness.