TWI423235B - Liquid crystal display apparatus and driving method thereof - Google Patents

Description

Liquid crystal display device and driving method thereof

The present invention relates to a display device and a driving method thereof, and more particularly to a liquid crystal display device and a driving method thereof.

Liquid crystal display (LCD) devices have been used in a wide variety of electronic products due to their low power consumption, low heat generation, light weight, and non-radiation, and gradually replaced the traditional A cathode ray tube (CRT) display device.

Generally, a liquid crystal display device mainly includes a liquid crystal display panel (LCD Panel) and a backlight module (Backlight Module). The liquid crystal display panel mainly has a thin film transistor substrate, a color filter substrate, and a liquid crystal layer interposed between the two substrates, and the two substrates and the liquid crystal layer form a plurality of pixels arranged in an array. The backlight module can evenly distribute the light of a light source to the liquid crystal display panel, and display a color through each pixel to form a pattern. However, since the voltage-transmittance curve between the pixels varies depending on the angle at which the user views the liquid crystal display panel (for example, looking at the side and the side view), there is a color shift when viewing the display panel from different viewing angles. The phenomenon arises.

In order to improve the color shift phenomenon, a variety of conventional techniques have been developed. Most of the technical features are that the single pixel is subdivided into a bright region and a dark region, whereby the voltage and penetration of the two regions are being viewed and viewed from the side. The rate curves are different, and have mutual compensation effects to achieve low color shift (LCS).

A conventional technique of dividing a pixel into a bright area and a dark area to improve color shift is a technique using Charge Sharing. Referring to FIG. 1 , the pixel P can be divided into two sub-pixels P _L and P _D , wherein the sub-pixel P _L has a charging switch Q ₁ and a liquid crystal capacitor C _LC1 . The pixel P _D has a charging switch Q ₂ , a liquid crystal capacitor C _LC2 , a discharging switch Q ₃ and a storage capacitor C _S .

The charging switch Q _{1 is} electrically connected to the scanning line S ₁ , the data line D ₁ , the liquid crystal capacitor C _LC1 and the charging switch Q ₂ , respectively. The charging switch Q _{2 is} electrically connected to the scan line S ₁ , the data line D ₁ , the liquid crystal capacitor C _{LC2 ,} and the discharge switch Q ₃ , respectively. The discharge switch Q _{3 is} electrically connected to the scan line S ₂ , the storage capacitor C _S and the liquid crystal capacitor C _LC2 , respectively.

The following operation principle is described by taking the column inversion as an example. When the frame time is used, the data line sends a positive voltage, and when the second picture time is sent, the same data line is sent. Negative voltage.

The operation principle is: when the first screen time, the scan line S ₁ sends a scan signal to simultaneously turn on the charging switch Q ₁ and the charging switch Q ₂ , and the display voltage (for example, the positive polarity) of the data line D ₁ will make The liquid crystal capacitor C _LC1 and the liquid crystal capacitor C _{LC2 are} charged; then, when the next scan line S ₂ sends another scan signal, the discharge switch Q _{3 is} turned on, and the charge of the liquid crystal capacitor C _LC2 is shared to the storage capacitor C _S . Balance the voltage between the two.

During the second screen time, the scan line S ₁ sends a scan signal to turn on the charge switch Q ₁ and the charge switch Q _{2 again} . At this time, the display voltage of the data line D ₁ (for example, the negative polarity) causes the liquid crystal capacitor C _{LC1 .} And the liquid crystal capacitor C _{LC2 is} discharged, the liquid crystal capacitor C _LC1 and the liquid crystal capacitor C _LC2 will have the same negative polarity voltage as the data line D ₁ ; then, when the next scan line S ₂ sends another scan signal, the discharge will be turned on. The switch Q ₃ , at this time, the storage capacitor C _S stores the positive polarity charge at the first screen time and finally balances with the liquid crystal capacitor C _LC2 having the negative polarity charge. Therefore, the liquid crystal capacitor C _LC1 and the liquid crystal capacitor C _LC2 have different voltages. Therefore, the pixel P has two sub-pixels P _L and P _{D of} different display voltages, so as to divide the pixel P into bright areas and dark areas, thereby improving the color shift phenomenon.

In addition, in a liquid crystal display device with a high frequency drive (for example, a driving frequency of 240 Hz), the charging time of the pixels may be insufficient, so that a special method is required to increase the scanning time of the scanning line, for example, in one screen time. Within the same time, the two adjacent scan lines are turned on at the same time, so that the scan time of each scan line in the display screen is doubled to increase the charging time of the pixels.

However, since the high frequency driven liquid crystal display device has to drive the adjacent two scanning lines at the same time, in order to improve the color shift phenomenon, when the above charge sharing technique is used, the adjacent two scanning lines must be sequentially driven, so It is impossible to use the technology of charge sharing on a high frequency driven liquid crystal display device to improve the color shift phenomenon.

Therefore, how to provide a liquid crystal display device having the above-described technique of high-frequency driving and utilizing charge sharing to improve color shift phenomenon has become one of important subjects.

In view of the above problems, an object of the present invention is to provide a liquid crystal display device which can utilize charge sharing to improve color shift phenomenon in addition to a technique of high frequency driving.

To achieve the above object, a liquid crystal display device according to the present invention comprises a liquid crystal display panel and a driving circuit. The liquid crystal display panel has a first scan line, a second scan line, a first control line, a second control line, a first data line, a second data line, a first pixel and a first Two pixels. The second data line is adjacent to the first data line. The first pixel is located between the first data line and the second data line, and has a first discharge switch, and the first pixel is electrically connected to the first data line, the first scan line and the first control line. The second pixel is located between the first data line and the second data line, and has a second discharge switch. The second pixel is electrically connected to the second data line, the second scan line and the second control line. The driving circuit is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the driving circuit transmits a scanning signal via the first scanning line and the second scanning line to simultaneously drive The first pixel and the second pixel, and a control signal is transmitted through the first control line and the second control line to simultaneously turn on the first discharge switch and the second discharge switch.

In an embodiment of the invention, the first pixel further has a first charging switch and a second charging switch. The first charging switch is electrically connected to the first scanning line and the first data line. The second charging switch is electrically connected to the first scanning line, the first data line and the first discharging switch, and the scanning signal drives the first charging switch and the second charging switch simultaneously.

In an embodiment of the invention, the second pixel further has a third charging switch and a fourth charging switch. The third charging switch is electrically connected to the second scanning line and the second data line. The fourth charging switch is electrically connected to the second scanning line, the second data line and the second discharging switch, and the scanning signal drives the third charging switch and the fourth charging switch simultaneously.

In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first scanning line And the second scan line is electrically connected to one of the driving IC channels.

In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first control line and The second control line is electrically connected to one of the channels of the driver IC.

In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first scanning line And the second scan line is electrically connected to different channels of the driver IC.

In an embodiment of the invention, the driving circuit has a driving IC, and the driving IC is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the first control line and The second control line is electrically connected to different channels of the driver IC.

In an embodiment of the invention, the driving circuit has two driving ICs, and the first scanning line and the second scanning line are electrically connected to one of the driving ICs, and the first control line and the second control line are connected to each other. A drive IC is electrically connected.

In an embodiment of the invention, the scan time of the scan signal partially overlaps with the control time of the control signal.

In an embodiment of the invention, the scan time of the scan signal does not overlap with the control time of the control signal.

In an embodiment of the invention, the amplitude of the control signal is adjustable.

In an embodiment of the invention, the control time of the control signal is adjustable.

In order to achieve the above object, in accordance with a driving method of a liquid crystal display device of the present invention, the liquid crystal display device has a liquid crystal display panel and a driving circuit, and the liquid crystal display panel has a first scanning line, a second scanning line, and a first a control line, a second control line, a first data line, a second data line, a first pixel, a second pixel, the first data line is adjacent to the second data line, and the first pixel is located Between the first data line and the second data line, and having a first discharge switch, the first pixel is electrically connected to the first data line, the first scan line and the first control line, and the second pixel is located at the first pixel Between a data line and a second data line, and having a second discharge switch, the second pixel is electrically connected to the second data line, the second scan line and the second control, and the driving circuit and the first scanning line The second scan line, the first control line and the second control line are electrically connected, and the driving method comprises: transmitting a scan signal via the first scan line and the second scan line to simultaneously drive the first pixel and the second picture And transmitting a control via the first control line and the second control line No. simultaneously turn on the first discharge switch and a second discharge switch.

As described above, when the liquid crystal display device of the present invention is used to drive pixels, two adjacent scan lines are simultaneously turned on, so that the scanning time of each pixel of the display screen is doubled. To increase the charging time of the liquid crystal capacitor. In addition, after the two adjacent scan lines are simultaneously turned on at the same time, the two adjacent control pixels are simultaneously turned on by the two control lines, thereby dividing the pixels into two pixels (for example, a dark area and A bright area) has the effect of mutual compensation by the difference of the voltage-transmission curve between the two areas and the side view, so as to achieve the purpose of low color shift. In addition, in an embodiment of the present invention, the opening and opening time of the discharge switch can be adjusted by adjusting the amplitude and control time of the control signal, thereby adjusting the voltage difference between the liquid crystal capacitors of the two pixels to control and Change the color shift phenomenon. Therefore, the liquid crystal display device of the present invention can control and adjust the brightness of the bright and dark regions of each pixel by transmitting the scan signal and the control signal to improve the color shift phenomenon.

Hereinafter, a liquid crystal display device and a driving method thereof according to a preferred embodiment of the present invention will be described with reference to the related drawings.

2 is a schematic diagram of a liquid crystal display device 10 in accordance with a preferred embodiment of the present invention. Referring to FIG. 2, the liquid crystal display device 10 includes a liquid crystal display panel 1 and a driving circuit 2. The liquid crystal display panel 1 has a plurality of data lines D ₁₁ to D _1m , a plurality of scanning lines S ₁₁ to S _1n , a plurality of control lines C ₁₁ to C _{1n ,} and a plurality of pixels P ₁₁ to P _nm . The signals of the data lines D ₁₁ to D _1m can be provided by a data driving circuit. The signals of the scanning lines S ₁₁ -S _1n can be provided by a scanning driving circuit, and the data signals can be transmitted through the data lines and the scanning signals can be transmitted through the scanning lines. Drive each pixel separately.

The pixels P ₁₁ to P _nm include a first pixel P ₁₁ and a second pixel P ₂₁ . The first pixel P ₁₁ is located between the first data line D ₁₁ and the second data line D ₁₂ and is electrically connected to the first data line D ₁₁ , the first scan line S ₁₁ and the first control line C ₁₁ . The second pixel P ₂₁ is located between the first data line D ₁₁ and the second data line D ₁₂ and is electrically connected to the second data line D ₁₂ , the second scan line S _{12 ,} and the second control line C ₁₂ . The first pixel P ₁₁ , the second pixel P ₂₁ , the first data line D ₁₁ , the second data line D ₁₂ , the first scan line S ₁₁ , the second scan line S ₁₂ , and the first control line in this embodiment The positions of the C ₁₁ and the second control line C ₁₂ are merely illustrative and are not intended to limit the invention.

The driving circuit 2 is electrically connected to the plurality of scanning lines S ₁₁ to S _1n and the plurality of control lines C ₁₁ to C _1n , wherein the driving circuit 2 has a driving IC 21 . The drive IC 21 is electrically connected to the first scan line S ₁₁ , the second scan line S ₁₂ , the first control line C _{11 ,} and the second control line C ₁₂ . The first scan line S ₁₁ and the second scan line S ₁₂ are electrically connected to the first channel G _{1 of the} driving IC 21 , and the first control line C ₁₁ and the second control line C ₁₂ are connected to the driving IC 21 . The second channel G _{2 is} electrically connected. Therefore, when the driving IC ₂₁ transmits a scan signal SS ₁ via the first channel G ₁ , the first pixel P ₁₁ and the second pixel P ₂₁ are simultaneously driven, and when the driving IC ₂₁ transmits a control signal CS via the second channel G _{2 At 1} o'clock, the first pixel P ₁₁ and the second pixel P ₂₁ will also be driven simultaneously.

In this embodiment, for example, when the circuit of the liquid crystal display panel 1 is fabricated, the first scan line S ₁₁ and the second scan line S _{12 are} electrically connected directly to the liquid crystal display panel 1 , and the first control line C is connected. ₁₁ and the second control line C _{12 are} electrically connected (ie, the first control line C ₁₁ and the second control line C ₁₂ have a common portion on the liquid crystal display panel 1), and then electrically connected to the first of the driving IC 21 respectively. Channel G ₁ and second channel G ₂ . Or directly, the first scan line S ₁₁ and the second scan line S ₁₂ , the first control line C ₁₁ and the second control line C ₁₂ are electrically connected to the first channel G ₁ and the second channel G _{2 of the} driving IC ₂₁ respectively. Sexual connections are not limited here.

FIG. 3 is a schematic view showing another aspect of a liquid crystal display device 10a according to a preferred embodiment of the present invention.

Referring to FIG. 3, the drive having a driving circuit 2a IC22, wherein the first scan lines and second scan lines S ₁₁ S ₁₂ are electrically connected to different channels of IC22 drives, and the first control line C ₁₁ The second control line C _{12 is} electrically connected to different channels of the driving IC 22, respectively. In this embodiment, the first scan line S ₁₁ is electrically connected to the first channel H ₁ , and the second scan line S ₁₂ is electrically connected to the second channel H ₂ , and the first control line C ₁₁ is The third channel H _{3 is} electrically connected, and the second control line C ₁₂ is electrically connected to the fourth channel H ₄ .

The driving IC 22 differs from the driving IC 21 mainly in that the driving IC 22 has twice the number of channels of the driving IC 21. As shown in FIG. 3, the number of channels of the driving IC 22 is 2n, and the number of channels of the driving IC 21 is n. In addition, the first channel H ₁ and the second channel H ₂ of the driving IC 22 simultaneously transmit the scan signal SS′ to simultaneously drive the first pixel P ₁₁ and the second pixel P ₂₁ , and drive the third channel H _{3 of the} IC 22 . And the fourth channel H ₄ transmits the control signal CS′ simultaneously to drive the first pixel P ₁₁ and the second pixel P ₂₁ simultaneously.

FIG. 4 is a schematic view showing still another aspect of a liquid crystal display device 10b according to a preferred embodiment of the present invention.

Referring to FIG. 4, the drive circuit 2b has two drive ICs 23 and 24. In this embodiment, the first scan line S ₁₁ and the second scan line S ₁₂ are electrically connected to the first channel K _{1 of the} driving IC 23, and the third scan line S ₁₃ and the fourth scan line S are electrically connected. _{The 14th} line is electrically connected to the second channel K _{2 of the} driving IC 23. The first control line C ₁₁ and the second control line C ₁₂ are electrically connected to the first channel L _{1 of the} driving IC 24, and the third control line C ₁₃ and the The four control lines C ₁₄ are electrically connected to the second channel L _{2 of the} driver IC 24 .

Thus, when the drive via a first channel K ₁ IC23 transmitting a scanning signal SS ", simultaneously drives the first pixel and the second pixel P ₁₁ P _21, when the driving through the first passage L ₁ IC24 transmits a control signal CS "At the same time, the first pixel P ₁₁ and the second pixel P ₂₁ will also be driven simultaneously.

FIG. 5 is a schematic diagram of a pixel circuit in which the driving circuit 2 is electrically connected to the first pixel P ₁₁ and the second pixel P ₂₁ , and FIG. 6 is a driving timing chart of FIG. 5 .

The following is an example of FIG. 2, FIG. 5 and FIG.

Referring to FIG. 5, the first pixel P ₁₁ has a first charging switch Q _11L , a second charging switch Q _11D and a first discharging switch Q ₁₁ . The first charging switch Q _{11L is} electrically connected to the first scanning line S ₁₁ and the first data line D ₁₁ , the second charging switch Q _11D and the first scanning line S ₁₁ , the first data line D ₁₁ and the first discharge The switch Q _{11 is} electrically connected.

The second pixel P ₂₁ has a third charging switch Q _21L , a fourth charging switch Q _21D and a second discharging switch Q ₂₁ , and the third charging switch Q _21L and the second scanning line S ₁₂ and the second data line D _{12 are} electrically The fourth charging switch Q _{21D is} electrically connected to the second scanning line S ₁₂ , the second data line D ₁₂ and the second discharging switch Q ₂₁ .

The driving IC 21 of the driving circuit 2 transmits a scan signal SS ₁ via the first channel G ₁ , the first scanning line S ₁₁ and the second scanning line S ₁₂ to simultaneously drive the first pixel P ₁₁ and the second pixel P _{21 .} . Please refer to FIGS. 5 and 6, in the first frame time T1 of a first time t1, a first channel scan signal G ₁ of the SS transmits _a first line while turning pixels P ₁₁ of the first charge The switch Q _11L , the second charging switch Q _11D and the third charging switch Q _{21L of the} second pixel P ₂₁ and the fourth charging switch Q _21D enable the first data line D ₁₁ and the second data line D _{12 to} simultaneously respectively face the liquid crystal Capacitors C _11L , C _11D and C _21L , C _{21D are} charged.

At a second time t2 of the first picture time T1, the driving circuit 2 transmits a control signal CS ₁ via the second channel G ₂ , the first control line C ₁₁ and the second control line C ₁₂ to simultaneously turn on the first discharging switch Q. ₁₁ and the second discharge switch Q ₂₁ respectively share the charges of the liquid crystal capacitor C _{11D of} the first pixel P ₁₁ and the liquid crystal capacitor C _21D of the second pixel P ₂₁ to the storage capacitors C _S11 and C _{S21 , respectively} .

At the third time t3 of the second picture time T2, the drive IC ₂₁ transmits another scan signal SS' ₁ again via the first channel G ₁ , the first scan line S ₁₁ and the second scan line S ₁₂ to simultaneously turn on again. The first charging switch Q _11L , the second charging switch Q _11D , the third charging switch Q _21L and the fourth charging switch Q _21D enable the voltages of the first data line D ₁₁ and the second data line D _{12 to} simultaneously correspond to the liquid crystal capacitor C _11L , C _11D and C _21L , C _21D charging. It should be noted that the voltage polarity of the same data line at the first picture time T1 and the second picture time T2 is opposite. Therefore, at this time, the liquid crystal capacitors C _11D and C _21D have opposite polarities to the storage capacitors C _S11 and C _S21 . Voltage.

At the fourth time t4 of the second picture time T2, the driving IC ₂₁ transmits another control signal CS' ₁ via the second channel G ₂ , the first control line C ₁₁ and the second control line C ₁₂ to simultaneously turn on the first discharging switch. Q ₁₁ and second discharge switch Q ₂₁ . Since the liquid crystal capacitors C _11D and C _21D have voltage polarities opposite to the storage capacitors C _S11 and C _S21 , respectively, the charges stored in the liquid crystal capacitors C _11D , C _21D and the storage capacitors C _S11 and C _S21 are neutralized again. Balanced, so that the liquid crystal capacitors C _11L and C _11D and C _21L and C _21D have different voltages, so as to separate the first pixel P ₁₁ and the second pixel P ₂₁ into a dark area and a bright area, respectively. Thus, the phenomenon of color shift is improved.

In addition, in this embodiment, the amount of opening of the first discharge switch Q ₁₁ can be adjusted, for example, by adjusting the amplitude of the control signal CS ₁ (Δv in FIG. 6) and the control time (Δt=t2'-t2 in FIG. 6). The turn-on time is further adjusted to adjust the discharge amount and discharge time of the storage capacitor C _S11 to adjust the voltage difference between the sub-pixels P _11L and P _11D and the liquid crystal capacitors C _11L and C _{11D to} control and improve the color shift.

As described above, the liquid crystal display device 10 of the preferred embodiment of the present invention is connected to the same channel of the driving IC 21 of the driving circuit 2, and simultaneously turns on the first pixel P ₁₁ and the second pixel P ₂₁ by the charge sharing technique. The first scan line S ₁₁ and the second scan line S ₁₂ double the scan time of each pixel in the display screen to increase the charging time of the liquid crystal capacitor. Later, the other channel of the driving IC ₂₁ simultaneously turns on the first pixel P ₁₁ and the first discharging switch Q ₁₁ and the second discharging switch Q ₂₁ of the first pixel P ₁₁ to reach the first pixel P ₁₁ and the first pixel The two pixels P ₂₁ are respectively divided into a bright area and a dark area to improve the color shift phenomenon.

In addition, in this embodiment, the scan time of the scan signal and the control time of the control signal may overlap or not overlap, for example. As shown in FIG. 6, in the present embodiment, the scan time of the scan signal SS ₁ and the control time of the control signal CS ₁ are not overlapped. However, it is also possible to adjust the difference and degree of light and dark of the two pixels P _11L and P _11D by partially overlapping the two (as shown by the overlap time A in FIG. 6).

In addition, if the pre-charge function is used, the scan time of the scan signal SS ₂ and the scan signal SS ₁ may partially overlap each other, so that the pixel liquid crystal capacitor can be pre-charged to increase the pixel. Charging time.

2 and 5, a method of driving the liquid crystal display device 10 of the present invention will be described. The component names of the liquid crystal display device 10 and their connection relationships are as described above, and are not described herein again.

The driving method of the liquid crystal display device 10 includes: transmitting a scan signal SS ₁ via the first scan line S ₁₁ and the second scan line S ₁₂ to simultaneously drive the first pixel P ₁₁ and the second pixel P ₂₁ , and then, A control signal CS _{1 is} transmitted via the first control line C ₁₁ and the second control line C ₁₂ to simultaneously turn on the first discharge switch Q ₁₁ and the second discharge switch Q ₂₁ .

In summary, since the liquid crystal display device of the present invention is used to drive pixels, two adjacent scan lines are simultaneously turned on, so that the scanning time of each pixel of the display screen is doubled to increase The charging time of the liquid crystal capacitor. In addition, after the two adjacent scan lines are simultaneously turned on at the same time, the two adjacent control pixels are simultaneously turned on by the two control lines, thereby dividing each pixel into two pixels (for example, a dark region and A bright area) has the effect of mutual compensation by the difference of the voltage-transmission curve between the two areas and the side view, so as to achieve the purpose of low color shift. In addition, in an embodiment of the present invention, the opening and opening time of the discharge switch can be adjusted by adjusting the amplitude and control time of the control signal, thereby adjusting the voltage difference between the liquid crystal capacitors of the two pixels to control and Change the color shift phenomenon. Therefore, the liquid crystal display device of the present invention can control and adjust the brightness of the bright and dark regions of each pixel by transmitting the scan signal and the control signal to improve the color shift phenomenon.

The above is intended to be illustrative only and not limiting. Any equivalent modifications or alterations to the spirit and scope of the invention are intended to be included in the scope of the appended claims.

1, 1a, 1b. . . LCD panel

10, 10a, 10b. . . Liquid crystal display device

2, 2a, 2b. . . Drive circuit

21, 22, 23, 24. . . Driver IC

C ₁₁ ~ C _1n , C ₁₂ . . . Control line

C _11D , C _11L , C _21D , C _21L , C _LC1 , C _LC2 . . . Liquid crystal capacitor

CS ₁ , CS', CS' ₁ , CS"... control signals

C _S11 , C _S21 , C _S . . . Storage capacitor

D ₁₁ ~ D _1m . . . Data line

G ₁ to G _n , H ₁ to H _2n , K ₁ to K _n , and L ₁ to L _n . . . aisle

P ₁₁ ~ P _nm . . . Pixel

P _11D , P _11L , P _21D , P _21L , P _L , P _D . . . Subpixel

Q ₁ , Q ₂ , Q _11L , Q _11D , Q _21L , Q _21D . . . Charging switch

Q ₁₁ , Q ₂₁ , Q ₃ . . . Discharge switch

SS ₁ , SS ₂ , SS', SS", SS' ₁ , SS' ₂ ... scan signal

S ₁₁ ~ S _1n . . . Sweep line

T1, T2. . . Picture time

T1, t2, t2', t3, t4. . . time

1 is a schematic diagram of a conventional circuit for dividing a pixel into a bright area and a dark area by a charge sharing technique;

2 is a schematic view of a liquid crystal display device according to a preferred embodiment of the present invention;

3 is a schematic view showing another aspect of a liquid crystal display device according to a preferred embodiment of the present invention;

4 is a schematic view showing still another aspect of a liquid crystal display device according to a preferred embodiment of the present invention;

5 is a schematic diagram of a driving circuit, first and second pixel circuits according to a preferred embodiment of the present invention;

Fig. 6 is a timing chart showing the driving of the liquid crystal display device of the preferred embodiment of the present invention.

1. . . LCD panel

10. . . Liquid crystal display device

2. . . Drive circuit

twenty one. . . Driver IC

C ₁₁ , C ₁₂ . . . Control line

C _11D , C _11L , C _21D , C _21L , C _S11 , C _S21 . . . capacitance

CS ₁ . . . Control signal

D ₁₁ , D ₁₂ . . . Data line

G ₁ , G ₂ . . . aisle

P ₁₁ , P ₂₁ , P _11D , P _11L , P _21D , P _21L . . . Pixel

Q ₁₁ , Q ₂₁ . . . Discharge switch

Q _11L , Q _11D , Q _21L , Q _21D . . . Charging switch

S ₁₁ , S ₁₂ . . . Sweep line

SS ₁ . . . Scan signal

Claims (8)

A liquid crystal display device comprising: a liquid crystal display panel having: a first scan line; a second scan line; a first control line; a second control line; a first data line; a second data line is adjacent to the first data line; a first pixel is located between the first data line and the second data line, and has a first discharge switch, the first pixel And the first data line, the first scan line and the first control line are electrically connected; and a second pixel is located between the first data line and the second data line, and has a second a discharge switch, the second pixel is electrically connected to the second data line, the second scan line and the second control line; and a driving circuit is connected to the first scan line and the second scan The first control line and the second control line are electrically connected to each other, and the driving circuit transmits a scan signal to the second scan line via the first scan line to simultaneously drive the first pixel and the second a pixel, and transmitting a control signal via the first control line and the second control line to simultaneously turn on the first Electrical switch and the second discharge switch; wherein the control time period of the scan signals to the scan control signals Partial overlap. The liquid crystal display device of claim 1, wherein the driving circuit has a driving IC, the driving IC and the first scanning line, the second scanning line, the first control line and the second The control line is electrically connected, and the first scan line and the second scan line are electrically connected to one of the driving IC channels. The liquid crystal display device of claim 1, wherein the driving circuit has a driving IC, the driving IC and the first scanning line, the second scanning line, the first control line and the second The control line is electrically connected, and the first control line and the second control line are electrically connected to one of the driving IC channels. The liquid crystal display device of claim 1, wherein the driving circuit has a driving IC, the driving IC and the first scanning line, the second scanning line, the first control line and the second The control line is electrically connected, and the first scan line and the second scan line are electrically connected to different channels of the driving IC. The liquid crystal display device of claim 1, wherein the driving circuit has a driving IC, the driving IC and the first scanning line, the second scanning line, the first control line and the second The control line is electrically connected, and the first control line and the second control line are electrically connected to different channels of the driving IC. The liquid crystal display device of claim 1, wherein the driving circuit has two driving ICs, and the first scanning line and the second scanning line are electrically connected to one of the driving ICs, the first control Line and the first The second control line is electrically connected to another driving IC. A liquid crystal display device having a liquid crystal display panel and a driving circuit, the liquid crystal display panel having a first scanning line, a second scanning line, a first control line, and a second a control line, a first data line, a second data line, a first pixel, and a second pixel. The first data line is adjacent to the second data line, and the first pixel is located in the first Between a data line and the second data line, and having a first discharge switch, the first pixel is electrically connected to the first data line, the first scan line and the first control line, the first The two pixels are located between the first data line and the second data line, and have a second discharge switch, the second pixel and the second data line, the second scan line and the second control line Electrically connecting, the driving circuit is electrically connected to the first scanning line, the second scanning line, the first control line and the second control line, and the driving method comprises: via the first scanning line The second scan line transmits a scan signal to simultaneously drive the first pixel and the second pixel; Transmitting a first control signal via the control line and the second control line to simultaneously open the first discharge switch and the second discharge switch; wherein the scan signal of the scan time overlapped with the control signal controlling the time-based part. The driving method of claim 7, wherein the control signal simultaneously turns on the first discharge switch and the second discharge switch after the scan signal simultaneously drives the first pixel and the second pixel.