CN102956205B - Driver module and liquid crystal indicator - Google Patents
Driver module and liquid crystal indicator Download PDFInfo
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- CN102956205B CN102956205B CN201110235869.0A CN201110235869A CN102956205B CN 102956205 B CN102956205 B CN 102956205B CN 201110235869 A CN201110235869 A CN 201110235869A CN 102956205 B CN102956205 B CN 102956205B
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Abstract
The invention provides a kind of driver module and liquid crystal indicator.This driver module in order to drive a display panels, and comprises a sequential control circuit and a data drive circuit.Sequential control circuit produces one first control signal and one first data-signal.Data drive circuit comprises a shift scratch circuit, a data buffering circuit and a voltage position quasi displacement circuit.Shift scratch circuit produces one second control signal according to the first control signal.Data buffering circuit has multiple data temporary storage assembly, and receives the first data-signal according to the second control signal and export the first data-signal.Voltage position quasi displacement circuit has the accurate displaceable members in multiple position, and exports one second data-signal after receiving the first data-signal.Wherein the quantity of the data line of display panels is identical with the quantity of the accurate displaceable members in position, and is at least twice of the quantity of data temporary storage assembly.So data drive circuit intraware and cabling thereof are relatively less, its circuit cost is reduced.<pb pnum="1" />
Description
Technical field
The invention relates to a kind of driver module and display device, particularly about a kind of driver module and liquid crystal indicator.
Background technology
Liquid crystal display (Liquid Crystal Display, LCD) device is low with its power consumption, thermal value is few, lightweight and non-radiation type etc. advantage, be used in electronic product miscellaneous, and little by little replace traditional cathode-ray tube (CRT) (Cathode Ray Tube, CRT) display device.
Generally speaking, liquid crystal indicator mainly comprises a display panels, a driver module and a backlight module.Wherein, display panels mainly has a thin film transistor base plate (TFT substrate), a colored optical filtering substrates (CF substrate) and is located in liquid crystal layer between two substrates, and two substrates and liquid crystal layer form the pixel that multiple array is arranged.In addition, driver module is in order to drive display panels.And the uniform light of a light source can be distributed to display panels by backlight module, and form a pattern via each pixel display color.
But, due to display panels each pixel between voltage-penetrance curve can watch the angle (such as just seeing and side is seen) of display panels along with user and different.Therefore, the phenomenon of colour cast will be had to produce when different visual angles viewing display panels.For improving color offset phenomenon, a kind of known technology is that single pixel is divided into a dark space and a clear zone again, has the effect mutually compensated, to reach the object reducing colour cast by the voltage that this twoth district is just being seen and side is seen-penetrance curve difference.
Please refer to shown in Figure 1A, a kind of known liquid crystal indicator 1 comprises display panels 11 and a driver module 12.Display panels 11 comprises thin film transistor base plate (TFT substrate) and colored optical filtering substrates (CF substrate), and has multiple pixel.
Driver module 12 has scan driving circuit 121, data drive circuit 122, sequential control circuit 123 and a Ka agate voltage (gammavoltage) produces circuit 124.Scan drive circuit 121 is by multi-strip scanning line S
mbe electrically connected with display panels 11, data drive circuit 122 is by a plurality of data lines D
nbe electrically connected with display panels 11.Ka agate voltage generation circuit 124 comprises a bleeder circuit, such as resistance string, Ka agate voltage can be provided to the reference voltage of data drive circuit 122 as its dividing potential drop, and provide common voltage to the common electrode of colored optical filtering substrates.
Sequential control circuit 123 transmits vertical frequency signal and vertical synchronizing signal to scan drive circuit 121, and convert the vision signal received from external interface to data drive circuit 122 data-signal used, and data signal, horizontal frequency signal and horizontal-drive signal are to data drive circuit 122.Scan drive circuit 121 is according to vertical frequency signal and each sweep trace S of vertical synchronizing signal turn in order
m.As sweep trace S
mduring conducting, data drive circuit 122, by the data-signal of each row pixel corresponding, carries out dividing potential drop to obtain driving the voltage signal of pixel according to Ka agate voltage, and by data line D
nvoltage signal is sent to the pixel electrode of pixel.In addition, Ka agate voltage generation circuit 124 also transmits common voltage to the common electrode of colored optical filtering substrates, and the electric field that liquid crystal is formed by the common voltage of common electrode and the voltage signal of pixel electrode carrys out start.
Shown in Figure 1A and Figure 1B, wherein, Figure 1B is the partial pixel schematic diagram of the display panels 11 of Figure 1A.
Each pixel region of display panels 11 is made to be divided into a dark space and a clear zone in order to improve color offset phenomenon, known a kind of practice is by Ka agate voltage generation circuit 124 (Figure 1B does not show) to produce different Ka agate voltage, and makes sequential control circuit 123 input pixel P1, one first district P11, P21 of P2 and the data-signal Ka agate voltage that correspondence is different respectively of one second district P12, P22.As shown in Figure 1B, by data line D
j, the first district P11 of pixel P1 is driven with the data-signal of corresponding first group of Ka agate voltage; By data line D
j+1, the second district P12 of pixel P1 is driven with the data-signal of corresponding second group of Ka agate voltage; By data line D
j+2, the second district P22 of pixel P2 is driven with the data-signal of corresponding first group of Ka agate voltage; And by data line D
j+3, drive the first district P21 of pixel P2 with the data-signal of corresponding second group of Ka agate voltage, by that analogy.
In this, make the data line D of driving first district P11 and the second district P12
jand data line D
j+1there is identical data-signal, and make the data line D of driving first district P21 and the second district P22
j+2and data line D
j+3there is identical data-signal.But, data line D is but made
jwith data line D
j+2the corresponding first group of Ka agate voltage of data-signal, and make data line D
j+1with data line D
j+3the corresponding second group of Ka agate voltage of data-signal.In other words, use two groups of Ka agate voltages to drive the firstth district and secondth district of the same pixel of display panels 11, to make each pixel of display panels 11 have dark space and clear zone respectively, to reach the object reducing colour cast.
But, above-mentionedly making the pixel of display panels 11 have the practice in dark space and clear zone respectively to improve color offset phenomenon, the data line of at least twice need be used to drive all pixels.For example, original every scan line S is supposed
ithe pixel quantity simultaneously can opening row is 480, due to each pixel is divided into dark space and clear zone, therefore each pixel needs two data lines to drive, the quantity of the data line of display panels 11 is made to be required to be 960, and 960 groups of data-signals need be sent to Article 1 data line to the 960th article of data line by data drive circuit 122 respectively, to drive the firstth district and secondth district of each row pixel respectively.So, the data-signal not only making sequential control circuit 123 receive and transmit is the twice of pixel quantity, and data drive circuit 122 intraware and cabling thereof are also relatively many and make its circuit cost higher.
Therefore, how to provide a kind of driver module and liquid crystal indicator, not only can improve color offset phenomenon, the conveying capacity of circuit cost and data-signal can be reduced again, become one of important topic.
Summary of the invention
Object of the present invention not only can improve color offset phenomenon for providing one, can reduce again driver module and the liquid crystal indicator of the conveying capacity of circuit cost and data-signal.
The present invention can realize by the following technical solutions.
According to a kind of driver module of the present invention in order to drive a display panels, display panels has a plurality of data lines.Driver module comprises a data drive circuit, and data drive circuit is electrically connected with described data line, and comprises a data buffering circuit and a voltage position quasi displacement circuit.Data buffering circuit has multiple data temporary storage assembly, and exports one first data-signal.Voltage position quasi displacement circuit is electrically connected with data buffering circuit, and voltage position quasi displacement circuit has the accurate displaceable members in multiple position, and exports one second data-signal after receiving the first data-signal.Wherein the quantity of data line is identical with the quantity of the accurate displaceable members in position, and is at least twice of the quantity of data temporary storage assembly, and is positive integer multiple.
In one embodiment, each data temporary storage assembly is electrically connected with two accurate displaceable members in position respectively.
In one embodiment, the data volume of the second data-signal is the twice of the first data-signal.
In one embodiment, data drive circuit also comprises one first D/A conversion circuit and one second D/A conversion circuit, it is electrically connected with voltage position quasi displacement circuit respectively, and the first D/A conversion circuit and described second D/A conversion circuit receive the second data-signal respectively.
In one embodiment, driver module also comprises a Ka agate voltage generation circuit, be electrically connected with the first D/A conversion circuit and the second D/A conversion circuit respectively, Ka agate voltage generation circuit produces one first group of Ka agate voltage and one second group of Ka agate voltage, and inputs to the first D/A conversion circuit and the second D/A conversion circuit respectively.
In one embodiment, the first D/A conversion circuit produces one the 3rd data-signal according to the second data-signal and first group of Ka agate voltage, and the second D/A conversion circuit produces one the 4th data-signal according to the second data-signal and second group of Ka agate voltage.
In one embodiment, data drive circuit also comprises a data selection circuit, it is electrically connected with the first D/A conversion circuit and the second D/A conversion circuit respectively, and select one the 5th data-signal from the 3rd data-signal, and select one the 6th data-signal from the 4th data-signal, the 5th data-signal is not identical with the 6th data-signal.
In one embodiment, data drive circuit also comprises a simulated cushioned amplifying circuit, and it is electrically connected with data selection circuit and data line, and simulated cushioned amplifying circuit receives the output of data selection circuit, and inputs to data line.
In addition, a display panels and a driver module is comprised according to a kind of liquid crystal indicator of the present invention.Display panels comprises a plurality of data lines.Driver module comprises a data drive circuit.Data drive circuit is electrically connected with described data line, and comprises a data buffering circuit and a voltage position quasi displacement circuit.Data buffering circuit has multiple data temporary storage assembly, and exports one first data-signal.Voltage position quasi displacement circuit is electrically connected with data buffering circuit, voltage position quasi displacement circuit has the accurate displaceable members in multiple position, and export one second data-signal after receiving the first data-signal, wherein the quantity of data line is identical with the quantity of the accurate displaceable members in position, and be at least twice of the quantity of data temporary storage assembly, and be positive integer multiple.
In one embodiment, each data temporary storage assembly is electrically connected with two accurate displaceable members in position respectively.
In one embodiment, the data volume of the second data-signal is the twice of the first data-signal.
In one embodiment, data drive circuit also comprises one first D/A conversion circuit and one second D/A conversion circuit, it is electrically connected with voltage position quasi displacement circuit respectively, and the first D/A conversion circuit and the second D/A conversion circuit receive the second data-signal respectively.
In one embodiment, driver module also comprises a Ka agate voltage generation circuit, be electrically connected with the first D/A conversion circuit and the second D/A conversion circuit respectively, Ka agate voltage produces one first group of Ka agate voltage and one second group of Ka agate voltage, and inputs to the first D/A conversion circuit and the second D/A conversion circuit respectively.
In one embodiment, the first D/A conversion circuit produces one the 3rd data-signal according to the second data-signal and first group of Ka agate voltage, and the second D/A conversion circuit produces one the 4th data-signal according to the second data-signal and second group of Ka agate voltage.
In one embodiment, data drive circuit also comprises a data selection circuit, it is electrically connected with the first D/A conversion circuit and the second D/A conversion circuit respectively, and select one the 5th data-signal from the 3rd data-signal, and select one the 6th data-signal from the 4th data-signal, the 5th data-signal is not identical with the 6th material signal.
In one embodiment, data drive circuit also comprises a simulated cushioned amplifying circuit, and it is electrically connected with data selection circuit and data line, and simulated cushioned amplifying circuit receives the output of data selection circuit, and inputs to data line.
In one embodiment, display panels also comprises multiple pixel, and pixel has one first district and one second district respectively, and the firstth district is driven by the 5th data-signal, and the secondth district is driven by the 6th data-signal.
Whereby, although make each pixel of display panels be divided into a dark space and a clear zone to improve color offset phenomenon, and make the quantity of data line be the twice of former pixel quantity, but due to the quantity of the quantity of the data temporary storage assembly of data buffering circuit and the shift register assembly of shift scratch circuit be the half of data line quantity.Therefore, driver module of the present invention and liquid crystal indicator not only can make the data-signal of sequential control circuit reception and transmission identical with the quantity of each row pixel, and need not receive and transmit the data volume of twice, and data drive circuit intraware and cabling also relatively less, its circuit cost is reduced.
Accompanying drawing explanation
Figure 1A is a kind of schematic diagram of known liquid crystal indicator;
Figure 1B is the partial pixel schematic diagram of the display panels of Figure 1A;
Fig. 2 A is the function block schematic diagram of a kind of driver module of the preferred embodiment of the present invention;
Fig. 2 B is the data buffering circuit of Fig. 2 A and the function block schematic diagram of voltage position quasi displacement circuit; And
Fig. 3 is another function block schematic diagram of driver module of the present invention.
Main element symbol description:
1: liquid crystal indicator
11,3: display panels
12,2: driver module
121,24: scan drive circuit
122,22: data drive circuit
123,21: sequential control circuit
124,23: Ka agate voltage generation circuit
221: shift scratch circuit
222: data buffering circuit
223: voltage position quasi displacement circuit
224a: the first D/A conversion circuit
224b: the second D/A conversion circuit
225: data selection circuit
226: simulated cushioned amplifying circuit
CS1, CS2: control signal
D
j, D
j+1, D
j+2, D
j+3, D
n: data line
DS1 ~ DS6: data-signal
G1: the first group of Ka agate voltage
G2: the second group of Ka agate voltage
L: the accurate displaceable members in position
P1, P2: pixel
P11, P21: the firstth district
P12, P22: the secondth district
S: data temporary storage assembly
S
i, S
i+1, S
m: sweep trace
Embodiment
Hereinafter with reference to relevant drawings, a kind of driver module according to the preferred embodiment of the present invention and liquid crystal indicator are described, wherein identical element is illustrated with identical component symbol.
Please refer to shown in Fig. 2 A, it is the function block schematic diagram of a kind of driver module 2 of the preferred embodiment of the present invention.Driver module 2 of the present invention is in order to drive a display panels 3.Wherein, display panels 3 can be such as twisted nematic (TwistedNematic, TN) type, STN Super TN (SuperTwistedNematic, STN) type, double-layer ultra-torsion nematic (Double layer Super Twisted Nematic, DSTN) type, vertical orientation (Vertical Alignment, VA) type, horizontal component of electric field effect (In-Plane Switching, IPS) type, cholesterol (Cholesteric) type or blue phase (Blue Phase) type display panels.In addition, display panels 3 can comprise a thin film transistor base plate and stack mutually with a colored optical filtering substrates and put, and has multi-strip scanning line S
mand a plurality of data lines D
n, and form multiple pixel.The electric field that the liquid crystal of each pixel is formed by the voltage difference of the pixel electrode of thin film transistor base plate and the common electrode of colored optical filtering substrates and driving.
Driver module 2 comprises sequential control circuit 21 and a data drive circuit 22.
Sequential control circuit 21 produces one first control signal CS1 and one first data-signal DS1.In this, the first control signal CS1 can such as comprise horizontal frequency signal and or horizontal-drive signal, and the first data-signal DS1 can be and drives the pixel data of display panels 3.In addition, the vision signal received from external interface can be converted to the first data-signal DS1 needed for data drive circuit 22 by sequential control circuit 21.
Data drive circuit 22 respectively with sequential control circuit 21 and described data line D
nelectrical connection.Wherein, data drive circuit 22 is by described data line D
nthe the first data-signal DS1 exported by sequential control circuit 21 is sent to the pixel electrode of display panels 3 after treatment.Data drive circuit 22 comprises shift scratch circuit 221, data buffering circuit 222 and a voltage position quasi displacement circuit 223.
Shift scratch circuit 221 is electrically connected with sequential control circuit 21.The first control signal CS1 that shift scratch circuit 221 produces according to shift scratch circuit 221 produces one second control signal CS2.Wherein, the first control signal CS1 that shift scratch circuit 221 exports according to sequential control circuit 21 to control its actuation time, and exports the second control signal CS2 to data buffering circuit 222.
Data buffering circuit 222 is electrically connected with sequential control circuit 21 and shift scratch circuit 221.Wherein, data buffering circuit 222 has multiple data temporary storage assembly S, and the first data-signal DS1 that can produce according to the second control signal CS2 reception sequential control circuit 21.Wherein, the quantity of the quantity respective data lines D of data temporary storage assembly S.In this, the correspondence of quantity not necessarily 1: 1 corresponding relation, also can be 1 than many, or many corresponding relations than 1.
Data buffering circuit 222 controls its actuation time according to the second control signal CS2, keep in assembly S with turn-on data one by one, and be sequentially stored to each data temporary storage assembly S with the first data-signal DS1 that sequential control circuit 21 exports by the mode of breech lock (latch).When described data temporary storage assembly S receives the first data-signal DS1, the exportable first data-signal DS1 of data buffering circuit 222.For example, if when the quantity of the valid data of the first data-signal DS1 is 480, then the quantity of data temporary storage assembly S is at least 480.Illustrate, the quantity of above-mentioned valid data refers in input timing control circuit 21 again, and by data drive circuit 22 and multiple data line D
ndrive the quantity of the data-signal of corresponding multiple pixels.In addition, the quantity of valid data is 480 just citings, and certainly, user can comply with the valid data of its Demand Design varying number and the circuit of correspondence thereof.To be 480 with the quantity of the valid data of the first data-signal DS1 below, and the quantity of data temporary storage assembly S be also 480 illustrates.
Voltage position quasi displacement circuit 223 is electrically connected with data buffering circuit 222.Voltage position quasi displacement circuit 223 has the accurate displaceable members L in multiple position, and voltage position quasi displacement circuit 223 exports one second data-signal DS2 after receiving the first data-signal DS1.Wherein, voltage position quasi displacement circuit 223 by the logic level of the low voltage of such as 3V/0V or 5V/0V, can be passed to the cut-in voltage of more than the 20V driven needed for pixel switch and the closedown voltage of below-5V.
In addition, as shown in Figure 2 B, each data temporary storage assembly S is electrically connected with two accurate displaceable members L in position respectively, the data of each data temporary storage assembly S to be sent in two accurate displaceable members L in position simultaneously.In this, the data volume of the second data-signal DS2 is the twice of the first data-signal DS1, such as, be 960, and therefore, the effective quantity of position accurate displaceable members L is corresponding with it, is also 960.In addition, in above-mentioned, the first data-signal DS1 and the second data-signal DS2 is respectively digital signal.
Therefore, in order to make each pixel of display panels 3 have one first district (such as dark space) and one second district (such as clear zone) (figure does not show), described data line D
nquantity identical with the quantity (960) of institute's rheme accurate displaceable members L, and described data line D
nquantity (960) at least twice that is the quantity of described data temporary storage assembly S, and be integer multiple.In this, for twice (480).In addition, the data volume (960) of the second data-signal DS2 is the twice (480) of the first data-signal DS1.
In addition, please refer to shown in Fig. 3, it is another function block schematic diagram of driver module 2.Data drive circuit 22 also can comprise one first D/A conversion circuit 224a and one second D/A conversion circuit 224b, and the first D/A conversion circuit 224a and one second D/A conversion circuit 224b is electrically connected with voltage position quasi displacement circuit 223 respectively.Wherein, first D/A conversion circuit 224a and the second D/A conversion circuit 224b be the second data-signal DS2 of exporting of receiver voltage position quasi displacement circuit 223 respectively, and the second data-signal DS2 of numeral is converted respectively to the 3rd data-signal DS3 of simulation and the 4th data-signal DS4 and export.Data volume due to the second data-signal DS2 is 960, therefore the data volume that the first D/A conversion circuit 224a and the second D/A conversion circuit 224b exports in a picture frame time is also respectively 960.
Driver module 2 also can comprise a Ka agate voltage generation circuit 23, and Ka agate voltage generation circuit 23 is electrically connected with the first D/A conversion circuit 224a and the second D/A conversion circuit 224b respectively.Wherein, Ka agate voltage generation circuit 23 produces one first group of Ka agate voltage G1 and one second group of Ka agate voltage G2, and inputs to the first D/A conversion circuit 224a and the second D/A conversion circuit 224b respectively.Wherein, Ka agate voltage generation circuit 23 can comprise a bleeder circuit, such as resistance string, to provide first group of Ka agate voltage G1 and second group of Ka agate voltage G2 to the first D/A conversion circuit 224a and the second D/A conversion circuit 224b respectively, as the reference voltage of its dividing potential drop.
In addition, first D/A conversion circuit 224a produces one the 3rd data-signal DS3 according to the second data-signal DS2 and first group of Ka agate voltage G1, and the second D/A conversion circuit 224b produces one the 4th data-signal DS4 according to the second data-signal DS2 and second group of Ka agate voltage G2.In other words, the 3rd data-signal DS3 and the corresponding different Ka agate voltage of the 4th data-signal DS4.In the present embodiment, first D/A conversion circuit 224a converts the second data-signal DS2 of numerical digit the 3rd data-signal DS3 of simulation to, and the second D/A conversion circuit 224b converts the second data-signal DS2 of numerical digit the 4th data-signal DS4 of simulation to.Data volume due to the second data-signal DS2 is 960, therefore the data volume of the 3rd data-signal DS3 and the 4th data-signal DS4 is respectively 960.
Moreover data drive circuit 22 also can comprise a data selection circuit 225, data selection circuit 225 is electrically connected with the first D/A conversion circuit 224a and the second D/A conversion circuit 224b respectively.Data selection circuit 225 can select one the 5th data-signal DS5 from the 3rd data-signal DS3, and can select one the 6th data-signal DS6 from the 4th data-signal DS4, and the 5th data-signal DS5 is not identical with the 6th data-signal DS6.
For example, data selection circuit 225 can be selected to allow the data-signal of odd number pass through from the 3rd data-signal DS3, to obtain the 5th data-signal DS5, and select to allow the data-signal of even number pass through, to obtain the 6th data-signal DS6 from the 4th data-signal DS4 simultaneously.Or, data selection circuit 225 can be selected to allow the data-signal of even number by (the 5th data-signal DS5) from the 3rd data-signal DS3, and selects to allow the data-signal of odd number by (the 6th data-signal DS6) from the 4th data-signal DS4 simultaneously.Because the data volume of the 3rd data-signal DS3 and the 4th data-signal DS4 is respectively 960, therefore the data volume of the 5th data-signal DS5 and the 6th data-signal DS6 is respectively 480.
5th data-signal DS5 such as can drive firstth district (such as dark space) of the pixel of display panels 11 respectively, and the 6th data-signal DS6 can drive secondth district (such as clear zone) of pixel respectively simultaneously, or the 5th data-signal DS5 can drive firstth district (such as clear zone) of pixel, and the 6th data-signal DS6 can drive secondth district (such as dark space) of pixel simultaneously.In addition, in above-mentioned, third and fourth, five, six data-signal DS3 ~ DS6 are respectively voltage signal (simulating signal).
In addition, data drive circuit 22 also can comprise a simulated cushioned amplifying circuit 226, simulated cushioned amplifying circuit 226 and data selection circuit 225 and described data line D
nelectrical connection.Wherein, simulated cushioned amplifying circuit 226 receives the 5th data-signal DS5 and the 6th data-signal DS6 of data selection circuit 225 output, and inputs to described data line D
n, to drive described pixel, and make each pixel have clear zone and dark space respectively, there is the effect mutually compensated, to reach the object reducing colour cast by the voltage that this twoth district is just being seen and side is seen-penetrance curve difference.Wherein, the 5th data-signal DS5 that simulated cushioned amplifying circuit 226 makes data selection circuit 225 export and the 6th data-signal DS6 has larger driving force, to drive the described pixel of display panels 3.Because the data volume of the 5th data-signal DS5 and the 6th data-signal DS6 is respectively 480, therefore the data-signal that simulated cushioned amplifying circuit 226 exports is 960.
In addition, driver module 2 also can comprise scan driving circuit 24, scan drive circuit 24 respectively with sequential control circuit 21 and described sweep trace S
melectrical connection.Scan drive circuit 24 can receive vertical frequency signal and the vertical synchronizing signal turn in order sweep trace S of sequential control circuit 21 transmission
m, to make data drive circuit 22 by the data-signal (the 5th data-signal DS5 and the 6th data-signal DS6) of each row pixel corresponding, via data line D
nbe sent to the pixel electrode of pixel, to manifest corresponding display frame.
From the above, the sequential control circuit 21 of driver module 2 of the present invention need receive 480 vision signals, and export the data-signal that 480 drive pixel, and the component count of the shift scratch circuit 221 of data drive circuit 22 correspondence and data buffering circuit 222 also only needs 480, therefore, the data-signal that driver module of the present invention not only can make sequential control circuit 21 receive and transmit is identical with the quantity of each row pixel and need not receive and transmit the data volume of twice, and data drive circuit 22 intraware and cabling thereof also relatively less its circuit cost that makes is higher.
In addition, a kind of liquid crystal indicator of the present invention comprises display panels 3 and a driver module 2.Wherein, display panels 3 and driver module 2, in aforementioned middle detailed description, repeat no more in this.
In sum, driver module of the present invention and liquid crystal indicator not only can make the data-signal of sequential control circuit reception and transmission identical with the quantity of each row pixel, and need not receive and transmit the data volume of twice, and data drive circuit intraware and cabling also relatively less, its circuit cost is reduced.
The above is only illustrative, and non-limiting.Anyly do not depart from spirit of the present invention and category, and to its equivalent modifications of carrying out or change, all should be included in claim limited range.
Claims (8)
1. a driver module, in order to drive a display panels, described display panels has a plurality of data lines, it is characterized in that, described driver module comprises:
One data drive circuit, is electrically connected with described data line, and comprises:
One data buffering circuit, has multiple data temporary storage assembly, and exports one first data-signal;
One voltage position quasi displacement circuit, is electrically connected with described data buffering circuit, and described voltage position quasi displacement circuit has the accurate displaceable members in multiple position, and exports one second data-signal after receiving described first data-signal; And
One first D/A conversion circuit and one second D/A conversion circuit, it is electrically connected with described voltage position quasi displacement circuit respectively, and described first D/A conversion circuit and described second D/A conversion circuit receive described second data-signal respectively; And
One Ka agate voltage generation circuit, be electrically connected with described first D/A conversion circuit and described second D/A conversion circuit respectively, described Ka agate voltage generation circuit produces one first group of Ka agate voltage and one second group of Ka agate voltage, and inputs to described first D/A conversion circuit and described second D/A conversion circuit respectively;
Wherein, the quantity of described data line is identical with the quantity of the accurate displaceable members of institute's rheme, and is the twice of the quantity of described data temporary storage assembly; Each described data temporary storage assembly is electrically connected with two accurate displaceable members in position respectively; The data volume of described second data-signal is the twice of described first data-signal; Described voltage position quasi displacement circuit is between described data buffering circuit and described first D/A conversion circuit and described second D/A conversion circuit, and the output data quantity of described first D/A conversion circuit and described second D/A conversion circuit is equal with the data volume of described second data-signal respectively.
2. driver module according to claim 1, it is characterized in that, described first D/A conversion circuit produces one the 3rd data-signal according to described second data-signal and described first group of Ka agate voltage, and described second D/A conversion circuit produces one the 4th data-signal according to described second data-signal and described second group of Ka agate voltage.
3. driver module according to claim 2, it is characterized in that, described data drive circuit also comprises a data selection circuit, it is electrically connected with described first D/A conversion circuit and described second D/A conversion circuit respectively, and select one the 5th data-signal from described 3rd data-signal, and select one the 6th data-signal from described 4th data-signal, described 5th data-signal is not identical with described 6th data-signal.
4. driver module according to claim 3, it is characterized in that, described data drive circuit also comprises a simulated cushioned amplifying circuit, it is electrically connected with described data selection circuit and described data line, described simulated cushioned amplifying circuit receives the output of described data selection circuit, and inputs to described data line.
5. a liquid crystal indicator, is characterized in that, comprising:
One display panels, comprises a plurality of data lines;
One driver module, comprising:
One data drive circuit, is electrically connected with described data line, and comprises:
One data buffering circuit, has multiple data temporary storage assembly, and exports one first data-signal;
One voltage position quasi displacement circuit, is electrically connected with described data buffering circuit, and described voltage position quasi displacement circuit has the accurate displaceable members in multiple position, and exports one second data-signal after receiving described first data-signal; And
One first D/A conversion circuit and one second D/A conversion circuit, it is electrically connected with described voltage position quasi displacement circuit respectively, and described first D/A conversion circuit and described second D/A conversion circuit receive described second data-signal respectively; And
One Ka agate voltage generation circuit, be electrically connected with described first D/A conversion circuit and described second D/A conversion circuit respectively, described Ka agate voltage generation circuit produces one first group of Ka agate voltage and one second group of Ka agate voltage, and inputs to described first D/A conversion circuit and described second D/A conversion circuit respectively;
Wherein, described first D/A conversion circuit produces one the 3rd data-signal according to described second data-signal and described first group of Ka agate voltage, described second D/A conversion circuit produces one the 4th data-signal according to described second data-signal and described second group of Ka agate voltage, the quantity of described data line is identical with the quantity of the accurate displaceable members of institute's rheme, and is the twice of the quantity of described data temporary storage assembly; Each described data temporary storage assembly is electrically connected with two accurate displaceable members in position respectively; The data volume of described second data-signal is the twice of described first data-signal, described voltage position quasi displacement circuit is between described data buffering circuit and described first D/A conversion circuit and described second D/A conversion circuit, and the output data quantity of described first D/A conversion circuit and described second D/A conversion circuit is equal with the data volume of described second data-signal respectively.
6. liquid crystal indicator according to claim 5, it is characterized in that, described data drive circuit also comprises a data selection circuit, it is electrically connected with described first D/A conversion circuit and described second D/A conversion circuit respectively, and select one the 5th data-signal from described 3rd data-signal, and select one the 6th data-signal from described 4th data-signal, described 5th data-signal is not identical with described 6th data-signal.
7. liquid crystal indicator according to claim 6, it is characterized in that, described data drive circuit also comprises a simulated cushioned amplifying circuit, it is electrically connected with described data selection circuit and described data line, described simulated cushioned amplifying circuit receives the output of described data selection circuit, and inputs to described data line.
8. liquid crystal indicator according to claim 6, it is characterized in that, described display panels also comprises multiple pixel, and described pixel has one first district and one second district respectively, described firstth district is driven by described 5th data-signal, and described secondth district is driven by described 6th data-signal.
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| CN1758318A (en) * | 2004-10-04 | 2006-04-12 | 精工爱普生株式会社 | Source driver, electro-optic device, and electronic instrument |
| CN101582242A (en) * | 2008-05-12 | 2009-11-18 | 联咏科技股份有限公司 | Data drive circuit used for liquid crystal display with low color bias |
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| CN1758318A (en) * | 2004-10-04 | 2006-04-12 | 精工爱普生株式会社 | Source driver, electro-optic device, and electronic instrument |
| CN101582242A (en) * | 2008-05-12 | 2009-11-18 | 联咏科技股份有限公司 | Data drive circuit used for liquid crystal display with low color bias |
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Address after: 518109 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant after: Qunkang Technology (Shenzhen) Co., Ltd. Applicant after: Innolux Display Group Address before: 518109 Longhua, Shenzhen, town, Foxconn science and Technology Industrial Park E District, building 4, building 1, building Applicant before: Qunkang Technology (Shenzhen) Co., Ltd. Applicant before: Chimei Optoelectronics Co., Ltd. |
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