TWI409781B - Source driver, display device using the same and driving method of source driver - Google Patents

Abstract

A source driver, a display device and a driving method of the source driver are disclosed. The source driver adapted to a display panel includes a plurality of driving channels, wherein the display panel includes N pixel cells on each of a plurality of scan lines. The 1st driving channel to the Nth driving channel respectively drive the N pixel cells on a first scan line of the scan lines during a first scan period and the 2nd driving channel to the (N+1)th driving channel respectively drive the N pixel cells on a second scan line of the scan lines during a second scan period. When polarity inversion is performed on the display panel, each driving channel is responsible for outputting a data driving voltage with a certain polarity to the corresponding pixel cell during different scan periods. Therefore, the power consumption of the source driver can be decreased.

Description

Source driver, display device using the same, and driving method of source driving

The present invention relates to a source driver, a display device using the same, and a source driving method, and more particularly to a source driver for performing dot inversion of a display panel by using a plurality of driving channels, wherein Each of the drive channels is responsible for outputting data drive voltages of the same polarity during different scan periods.

1 is a schematic diagram of a liquid crystal display (LCD) device according to the prior art. The liquid crystal display device 100 includes a gate driver 110, a source driver 120, and a display panel 130. The display panel 100 includes a plurality of pixel units 131 arranged in a matrix, and each of the pixel units 131 is coupled to one of the scan lines 111 and one of the data lines 121. When the gate driver 110 enables one of the scan lines 111, the source driver 120 supplies the driving voltage to the pixel unit 131 on the corresponding scan line via the data line 121. In the driving system in the liquid crystal display device 100, the source driver 120 is an important component for converting a digital signal corresponding to the pixel unit 131 into a driving voltage, and transmitting the driving voltage to the pixel unit 131 for control. The rotation of the liquid crystal in the pixel unit 131.

The direction of rotation of the liquid crystal is related to the electric field supplied to the liquid crystal. In order to eliminate the DC residual voltage stored in the liquid crystal and to avoid polarization of the liquid crystal, the liquid crystal display panel 100 should be driven in a polarity inversion manner, that is, different polarity (for example, positive polarity). Drive voltage with negative polarity) will be during different frames The middle is alternately supplied to the pixel unit 131. The polarity inversion driving methods are, for example, the following: column inversion, row inversion, frame inversion, and dot inversion.

Referring to FIG. 1, with respect to dot inversion, two adjacent pixel units 131 are driven with driving voltages of different polarities, where "+" represents positive polarity and "-" represents negative polarity. Each drive channel in the source driver 120 should provide a positive and negative drive voltage for each of the two consecutive scan periods. The voltage swing between the positive polarity voltage and the negative polarity voltage is high and the power consumption of the source driver increases and the temperature of the liquid crystal display device 100 rises.

With the liquid crystal display device 100 of the row inversion or the face inversion, since the source driver supplies driving voltages of the same polarity in different scanning periods, power consumption can be reduced. However, compared with other driving methods, the liquid crystal display device 100 driven by dot inversion has better display quality due to the following advantages, and its advantages such as the occurrence of crosstalk and flicker are low. Therefore, in terms of point-inverted driving, the design of the source driver should overcome the problem of power consumption.

The invention provides a source driver and a driving method thereof. The source driver can perform dot inversion on a display panel by using a plurality of driving channels, wherein each driving channel outputs a data driving voltage of the same polarity to reduce power consumption. In addition, the present invention further provides a display device using the source driver, and the same Has the effect of reducing power consumption.

In view of the above, the present invention provides a source driver suitable for use in a display panel, wherein the display panel includes a plurality of scan lines, each scan line having N pixel units, where N is a positive integer. The source driver includes a plurality of driving channels. In the first scanning period, the first driving channel to the Nth driving channel respectively drive N pixel units on the first scan line of the scan lines; during the second scanning period, The second driving channel to the (N+1)th driving channel respectively drive N pixel units on the second scan line of the scan lines

In one embodiment of the source driver, the odd drive channels respectively output a plurality of data drive voltages of the first polarity, and the even drive channels respectively output a plurality of data drive voltages of the second polarity.

The invention further provides a driving method of a source driver, wherein the source driver comprises a plurality of driving channels. The above driving method is suitable for driving a plurality of scanning lines having N pixel units, where N is a positive integer. In the first scanning period, the source driver transmits the plurality of data driving voltages to the N pixel units on the first scan line of the scan lines via the first driving channel to the Nth driving channel, and in the second scanning period, The second driving channel to the (N+1)th driving channel transmit the data driving voltage to the N pixel units on the second scan line in the scan line.

In an embodiment of the driving method, the data driving voltage outputted by the even driving channel of the source driver has a first polarity, and the data driving voltage output by the odd driving channel of the source driver has a second polarity.

The present invention further provides a display device including a display panel, a first source driver, and a second source driver. Display panel includes A plurality of scan lines having 2N pixel units, where N is a positive integer. The first source driver and the second source driver respectively include a plurality of driving channels, and the first driving channel of the first source driver to the first driving channel of the first source driver and the first driving of the second source driver during the first scanning period The channel to the Nth driving channel drives 2N pixel units on the first scan line of the scan line, and the (N+1)th drive channel of the first source driver and the (N+1)th of the second source driver The drive channel is disabled. In the second scanning period, the second driving channel to the (N+1)th driving channel of the first source driver and the second driving channel to the (N+1)th driving channel of the second source driver drive the scan line The 2N pixel units on the second scan line are disabled by the first drive channel of the first source driver and the first drive channel of the second source driver. The (N+1)th driving channel of the first source driver and the first driving channel of the second source driver are coupled to each other.

In an embodiment of the above display device, the odd-numbered driving channels in the driving channels of the first source driver and the second source driver output a plurality of data driving voltages having a first polarity, and the first source driver and the second source The even drive channel of the source driver outputs a plurality of data drive voltages having a second polarity.

The invention further provides a source driver and a driving method thereof, in the first scanning period, the first driving channel to the Nth driving channel drive N pixel units on the first scanning line in the display panel, and in the second scanning During the period, the Nth pixel unit drives the N pixel units on the second scan line in the display panel from the 2nd drive channel to the (N+1)th drive channel. For a drive channel, this drive channel sequentially outputs the drive voltage to the sawtooth during different scan periods. A pixel unit on two adjacent lines scanned. Each drive channel is responsible for outputting drive voltages of the same polarity during different scans for dot inversion in the display panel. In addition, the power consumption of the source driver can be reduced thereby. The above described features and advantages of the present invention will be more apparent from the following description.

2A and 2B are schematic diagrams showing driving of a display device during a first scanning period and a second scanning period according to an embodiment of the invention. Referring to FIGS. 2A and 2B , the display device 200 includes a gate driver 210 , a source driver 220 , and a display panel 230 . The display panel 230 includes a plurality of pixel units 231 arranged in a matrix, and each pixel unit 231 is coupled to one of the scan lines S ₁ to S _{M and} one of the data lines D ₁ to D _N , and each There are N pixel units 231 on the scanning lines S ₁ to S _M . The source driver 220 has a plurality of driving channels CH ₁ to CH _N+1 , a plurality of shift registers SR ₁ to SR _N , a plurality of data latches L ₁ to L _N+1 , and a shift multiplexer 221 and an output multiplexer 222. In this embodiment, the display panel 230 is driven by the N driving channels CH ₁ to CH _N plus the auxiliary driving channel CH _N+1 , and the data latch is also, but the number of channels is not limited to the driving channels. number.

In the present embodiment, the display device 200 is one-dot inversion, that is, two adjacent pixel units 231 are driven by two driving voltages of different polarities, such as positive polarity (indicated as "+") and negative polarity (expressed as "-"). Referring to Figure 2A, during a first scan, the first scan line of the pixel unit of the first drive channel CH ₁ through CH _N N channels separately driven drive scan lines S ₁ to S _M in the 231, the scan lines S ₁ e.g. Where the first scan period is a period during which the scan line S ₁ is enabled by the gate driver 210. Now, the odd drive channels CH ₁ , CH ₃ , CH ₅ ... respectively output the data driving voltages VP ₁ , VP ₃ , VP ₅ ... of the first polarity (for example, positive polarity) to the odd numbers on the scan line S ₁ Prime unit 231. In addition, the even drive channels CH ₂ , CH ₄ , CH ₆ ... respectively output the data driving voltages VP ₂ , VP ₄ , VP ₆ ... of the second polarity (eg, the negative polarity) to the even number on the scan line S ₁ Prime unit 231. Since the shift register does not enable the data latch L _N+1 and the drive channel CH _{N+1 is} not coupled to the data line via the output multiplexer 222, the drive channel CH _{N+1 is} not enabled. .

In the first scanning period, by switching the shift multiplexer 221, the shift registers SR ₁ to SR _N control the first to _Nth driving channels CH ₁ to CH _N to respectively receive the corresponding scanning lines S ₁ The pixel data DP ₁ to DP _{N of the} upper N pixel units 231. Similarly, the shift registers SR ₁ to SR _N sequentially enable the data latches L ₁ to L _N to receive the pixel data DP ₁ to DP _N from the data bus. Those of ordinary skill in the art will appreciate that each of the above described drive channels can include the following components, such as level shifters, digital/analog converters, output buffers, and the like. The digital/analog converters included in the drive channels CH ₁ to CH _N respectively convert the pixel data DP ₁ to DP _N to the drive voltages VP ₁ to VP _N . Then, the drive channels CH ₁ to CH _N output the drive voltages VP ₁ to VP _N to the N pixel units 231 via the output multiplexer 222, respectively.

Referring to FIG. 2B, in the second scanning period, the second driving channel CH ₂ to the (N+1)th driving channel CH _N+1 drive the second scanning line (for example, the scanning line S) of the scanning lines S ₁ to S _M . ₂₎ N number of pixel units 231 on which the scanning during the second gate driver is enabled during the scan lines S _2. At the same time, the even-numbered driving channels CH ₂ , CH ₄ , CH ₆ ... respectively output the data driving voltages VP ₁ , VP ₃ , VP ₅ ... of the second polarity (for example, the negative polarity) to the odd-numbered lines on the scanning line S ₂ Prime unit. Further, the odd drive channels CH ₃ , CH ₅ ... other than the drive channel CH ₁ respectively output the data drive voltages VP ₂ , VP ₄ , VP ₆ ... to the scan line S of the first polarity (for example, positive polarity) The even pixel unit 231 on ₂ . Since the shift register does not enable the data latch L ₁ and the drive channel CH _{1 is} not coupled to the data line via the output multiplexer 222, the drive channel CH _{1 is} not enabled.

During the second scan, by the switching operation of the shift multiplexer 221, the shift registers SR ₁ to SR _N control the second drive channel CH ₂ to the (N+1)th drive channel CH _N+1 to respectively N pixel data DP ₁ to DP _{N are} received, which correspond to the pixel unit 231 on the scan line S ₂ . Similarly, the shift registers SR ₁ to SR _N sequentially enable the data latches L ₂ to L _N+1 to receive the pixel data DP ₁ to DP _N via the data bus. The digital/analog converter included in the drive channels CH ₂ to CH _N+1 converts the pixel data DP ₁ to DP _N into drive voltages VP ₁ to VP _{N , respectively} . Then, the driving channels CH ₂ to CH _N+1 output the driving voltages VP ₁ to VP _N to the N pixel units 231 via the output multiplexer 222, respectively.

When the scan line S ₃ as shown in the scan line S ₂ is enabled gate 210 drives, drive channel CH ₁ to CH _{N + 1} scanning lines during the operation mode can be activated as S ₃ of FIG. 2A. Further, when the scan line S ₄ is enabled by the gate driver 210 along with the scan line S ₃ , the operation of the drive channels CH ₁ to CH _N+1 during the enable period of the scan line S ₄ is as shown in FIG. 2B. By analogy, the display device 200 can realize a single-point inversion driving method. Although the above embodiment is exemplified by a single dot inversion, those skilled in the art can easily infer the implementation of two-dot inversion or other inversion type after the disclosure of the present invention. The present invention is not limited to the above embodiments.

As described above, each drive channel is responsible for outputting a drive voltage of the same polarity during different scan periods. For example, the driving channel CH ₂ outputs the driving voltage VP _{2 of the} positive polarity in the first scanning period, and outputs the driving voltage VP _{1 of the} positive polarity in the second scanning period. Since the voltage swing between the driving voltages of the same polarity is small, the power consumption of the source driver 220 can be reduced and the temperature of the display device 200 can be lowered.

It is worth noting that in each of the N pixel units 231 on each scan line, every three consecutive pixel units are regarded as one pixel, which corresponds to red (R), green (G), and blue ( B), that is, N is a multiple of 3. Thus, during the first scan, each drive channel _{CH. 1} to three _N channels continuous drive output of the CH should correspond to the red, green and blue driving voltage. During the second scan period, every three of the drive channels CH ₂ to CH _N+1 should respectively output drive voltages corresponding to red, green, and blue. As the size of the display panel increases, the number of drive channels for a single source driver may not be used, so designers must use multiple source drivers to drive such display panels. The following embodiments, as described above, provide the teachings of using a plurality of source drivers to drive high resolution display panels to those of ordinary skill in the art.

3A and FIG. 3B are schematic diagrams of a display device according to an embodiment of the present invention. Referring to FIG. 3A, the display device 300 includes a gate driver 210, source drivers 321 and 322, and a display panel 330. The display panel 330 includes a plurality of scan lines S ₁ to S _M , a plurality of data lines D ₁ to D _{2N+1 ,} and a plurality of pixel units 331 arranged in an array. Each scan line has 2N pixel units 331 which are twice as large as the display panel 230 in FIGS. 2A and 2B. Where 2N is a multiple of 3, and every three consecutive pixel units 331 correspond to red, green, and blue, respectively. The 2N pixel units 331 on the first scan line (for example, the scan line S ₁ ) are respectively coupled to the first data line D ₁ to the 2N data line D _2N , and the second scan line (for example, the scan line S ₂ ) The 2N pixel units 331 are respectively coupled to the second data line D ₂ to the (2N+1) data line D2 _N+1 . The source drivers 321 and 322 respectively include a plurality of driving channels CH ₁ to CH _N+1 , a plurality of shift registers SR ₁ to SR _N , a plurality of data latches L ₁ to L _{N+1 ,} and a plurality of shifts The 321 of the source driver 321 is connected to the (N+1)th drive channel CH _{N+1 of the} source driver 322 to the first drive channel CH _{1 of the} source driver 322.

Referring to Figure 3A, during a first scan, the source driver 321 in the first drive channel CH ₁ to N drive channel CH _N of the source driver 322 in the first drive channel CH ₁ to N drive channel CH _N The 2N pixel units 331 on the scan line S ₁ are respectively driven, and the (N+1)th drive channel CH _N+1 on the source driver 321 and the (N+1)th drive channel CH on the source driver 322 are respectively driven. _N+1 is disabled. At the same time, the (N+1)th drive channel CH _N+1 on the source drivers 321, 322 are all set to high impedance to ensure correct signal transmission. That is, the pixel unit 331 coupled to the (N+1)th data line D _N+1 on the scan line S ₁ should be driven by the first drive channel CH ₁ in the source driver 322 instead of the source. The (N+1)th drive channel CH _N+1 in the pole driver 321 .

Taking the source driver 321 as an example, in the first scanning period, the shift registers SR ₁ to SR _N sequentially enable the data latches L ₁ to L _N by the switching operation of the shift multiplexer 221. And receiving the pixel data DP ₁ to DP _N from the data bus, and then controlling the first driving channel CH ₁ to the N driving channel CH _N to respectively receive the first pixel unit corresponding to the scanning line S ₁ The pixel data DP ₁ to DP _{N of the} 331 to Nth pixel units 331. Drive channel CH ₁ to CH _N using the digital / analog converter to the pixel data DP ₁ to DP _N into the drive voltage VP ₁ through VP _N, then via the data line D ₁ to D _N output drive voltage VP ₁ ~ VP _N It goes to the first pixel unit 331 to the Nth pixel unit 331. In the first scanning period, the source driver 322 and the source driver 321 operate in the same manner, and details are not described herein again.

Referring to FIG. 3B, in the second scanning period, the second driving channel CH ₂ to the (N+1)th driving channel CH _N+1 of the source driver 321 and the second driving channel CH ₂ to the source driver 322 are (N+1) drive channel CH _N+1 drives 2N pixel units 331 on scan line S ₂ , respectively, and first drive channel CH ₁ in source driver 321 and first drive channel in source driver 322 CH ₁ is disabled. Similarly, in the second scanning period, the pixel unit 331 coupled to the scan line S ₂ of the (N+1)th data line D _N+1 should be the (N+1)th of the source driver 321 The drive channel CH _N+1 is driven instead of the first drive channel CH ₁ in the source driver 322.

Taking the source driver 321 as an example, in the second scanning period, the shift registers SR ₁ to SR _N sequentially enable the data latches L ₂ to L _N by the switching operation of the shift multiplexer 221. ₊₁ to receive the pixel data DP ₁ to DP _N from the data bus, and then control the second driving channel CH ₂ to the (N+1)th driving channel CH _N+1 to respectively receive the corresponding scanning line S the first unit pixel ₂ of the pixel units 331 to 331 of the N-th pixel data to the DP ₁ DP _N. The drive channels CH ₂ to CH _N+1 convert the pixel data DP ₁ to DP _N into drive voltages VP ₁ to VP _N using a digit/analog converter, and then output the drive voltage VP ₁ via the data lines D ₂ to D _{N+ 1 .} ~VP _N to the first pixel unit 331 to the Nth pixel unit 331. In the second scanning period, the source driver 322 and the source driver 321 operate in the same manner, and details are not described herein again.

4A and FIG. 4B are schematic diagrams of a display device according to an embodiment of the invention. Referring to FIG. 4A, the display device 400 includes a gate driver 210, source drivers 421-423, and a display panel 430. The display panel 430 includes a plurality of scan lines S ₁ to S _M , a plurality of data lines D ₁ to D _{2N+1 ,} and a plurality of pixel units 431 arranged in an array. Each of the scan lines has 3N pixel units 431, which is three times as large as the display panel 230 in FIG. 2A and FIG. 2B, but is not limited thereto. Each of the three consecutive pixel units 431 corresponds to red, green, and blue, respectively. The 3N pixel units 431 on the first scan line (for example, the scan line S ₁ ) are respectively coupled to the first data line D ₁ to the 3N data line D _3N , and the second scan line (for example, the scan line S ₂ ) The 3N pixel units 431 are respectively coupled to the second data line D ₂ to the (3N+1) data line D _3N+1 .

Similar to the embodiment of FIG. 3A, the source drivers 421 to 423 respectively include a plurality of driving channels CH ₁ to CH _N+1 , a plurality of shift registers SR ₁ to SR _N , and a plurality of data latches L ₁ to L _N+1 and shift multiplexer 411, and source driver 423 further includes another shift register SR _N+1 . The (N+1)th drive channel CH _N+1 in the source driver 421 is connected to the first drive channel CH ₁ in the source driver 422, and the (N+1)th drive channel CH _N in the source driver 422 _{+1 is} connected to the first drive channel CH ₁ in the source driver 423. During the first scan, the source driver of the first drive channel 421 ~ 423 CH ₁ to N of drive channel CH _N respectively driving the scan lines S 3N th pixel on _a unit 431, and the source drivers 421 to 423 The (N+1)th drive channel CH _N+1 on the upper side is disabled. That is, the pixel units 431 coupled to the (N+1)th data line D _N+1 and the (2N+1) data line D _2N+1 on the scan line S ₁ should be respectively driven by the source driver 422. And the first driving channel CH ₁ of 423 is driven.

Taking the source driver 421 as an example, in the first scanning period, the shift registers SR ₁ to SR _N sequentially enable the data latches L ₁ to L _N by the switching operation of the shift multiplexer 411. And receiving the pixel data DP ₁ to DP _N from the data bus, and then controlling the first driving channel CH ₁ to the N driving channel CH _N to respectively receive the first pixel unit corresponding to the scanning line S ₁ 431 to the Nth pixel unit 431. Drive channel CH ₁ to CH _N using the digital / analog converter converts the pixel data DP ₁ to DP _N driving voltage VP ₁ through VP _N, then via the data line D ₁ to D _N output drive voltage VP ₁ ~ VP _N to The first pixel unit 431 to the Nth pixel unit 431. In the first scanning period, the source drivers 422-423 operate in the same manner as the source driver 421, and the multiplexer 411 causes the shift register SR _N+1 in the source driver 423 not to be associated with the data locker L. _{N+1 is} connected, so the (N+1)th drive channel CH _{N+1 of the} source driver 423 is not activated.

Referring to FIG. 4B, during the second scan, the source driver of the second drive channel 421 CH ₂ through N-th driving channel CH _N, the source driver of the first drive channel 422 CH ₁ through N-th driving channel CH _N, And the first driving channel CH ₁ to the (N+1)th driving channel CH _{N+1 of the} source driver 423 respectively drive the 3N pixel units 431 on the scanning line S ₂ , and the first and the source drivers 421 section 422 of the (N + 1) driving channels CH ₁ and CH _{N + 1} and the source driver (N + 1) the drive channel CH _{N + 1} then the loss of energy. That is, in the second scanning period, the pixel unit 431 coupled to the (N+1)th data line D _N+1 and the (2N+1)th data line D _2N+1 on the scan line S ₂ is still Driven by the first drive channel CH _{1 of} the source drivers 422 and 423, respectively.

In the second scanning period, the shift registers SR ₁ to SR _N-1 in the source driver 421 sequentially enable the data latches L ₂ to L _N via the switching operation of the shift multiplexer 411, and The multiplexer 411 causes the shift register SR _N in the source driver 421 not to be connected to the data latch L _N+1 . In addition, via the switching operation of the shift multiplexer 411, the shift registers SR ₁ to SR _N in the source driver 422 sequentially enable the data latches L ₁ to L _N and are shifted in the source driver 423 The registers SR ₁ to SR _N+1 sequentially enable the data latches L ₁ to L _N+1 . At this time, the source driver 421 in the data latch device L ₂ to L _N, and the source driver 422 in the data latch device L ₁ by data bus receives the pixel data DP ₁ to DP _N, and controlling the source driver 421 The second drive channel CH ₂ to the Nth drive channel CH _N and the first drive channel CH _{1 of the} source driver 422 are respectively received to correspond to the first pixel unit 431 to the Nth pixel on the scan line S ₂ . The pixel data DP ₁ to DP _{N of the} unit 431.

Simultaneously, the data latches L ₂ to L _N in the source driver 422 and the data latcher L ₁ in the source driver 423 can receive the pixel data DP _N+1 to DP _2N from the data bus, and then control the source driver. The second drive channel CH ₂ to the Nth drive channel CH _{N of the} 422 and the first drive channel CH _{1 of the} source driver 423 are respectively received to correspond to the (N+1)th pixel unit 431 on the scan line S ₂ . The pixel data DP _N+1 to DP _2N to the 2N pixel unit 431. The data latches L ₂ to L _N+1 in the source driver 423 can receive the pixel data DP _2N+1 to DP _3N from the data bus, and then control the second drive channel CH ₂ to the Nth drive channel in the source driver 422. CH _N and the first driving channel CH _{1 of the} source driver 423 are respectively received to receive the pixel data DP _2N corresponding to the (2N+1)th pixel unit 431 to the 3N pixel unit 431 on the scanning line S ₂ . ₊₁ to DP _3N .

As can be seen from the embodiment of FIG. 4A and FIG. 4B, when a plurality of source drivers are used to drive the high-resolution display panel, the shift register SR ₁ to SR _N and the last included in the first source driver 421 The auxiliary shift register SR _N+1 included in one source driver 423 must be switched by the multiplexer 411 to enable the appropriate driving channel during the first scanning period and the second scanning period, and the remaining sources are The operation of the multiplexer 411 corresponding to the polar driver (eg, the source driver 422) during the first scanning period and the second scanning period can be maintained. Thereby, the control of the source driver driving pixel unit can be simplified.

In summary, the above embodiment describes that the source driver includes (N+1) drive channels for driving scan lines having N pixel units. Each of the source drivers is responsible for outputting a drive voltage of the same polarity (eg, positive or negative) to reduce the power consumption of the source driver. In addition, dot inversion can also be easily implemented on a display device to achieve high display quality.

Although the present invention has been disclosed in the above embodiments, it is not intended to limit the invention, and any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the invention. The scope of the invention is defined by the scope of the appended claims.

100‧‧‧Liquid crystal display device

110, 210‧‧ ‧ gate driver

120, 220, 321~322, 421~423‧‧‧ source drive

121‧‧‧Information line

111‧‧‧ scan line

130, 230, 330, 430‧‧‧ display panels

131, 231, 331, 431 ‧ ‧ pixel units

200, 300, 400‧‧‧ display devices

221, 411‧‧ ‧ shift multiplexer

222‧‧‧ Output multiplexer

S ₁ ~S _M ‧‧‧ scan line

D ₁ ~D _3N+1 ‧‧‧ data line

CH ₁ ~CH _N+1 ‧‧‧ drive channel

SR ₁ ~SR _N+1 ‧‧‧Shift register

L ₁ ~L _N+1 ‧‧‧ data lock

DP ₁ ~DP _3N ‧‧‧ pixel data

VP ₁ ~ VP _3N ‧‧‧ data drive voltage

1 is a schematic view of a liquid crystal display device according to the prior art.

2A and 2B are schematic diagrams showing driving of a display device during a first scanning period and a second scanning period according to an embodiment of the invention.

3A and 3B are schematic diagrams of a display device according to an embodiment of the invention.

4A and 4B are schematic diagrams of a display device according to an embodiment of the invention.

200‧‧‧ display device

210‧‧‧gate driver

220‧‧‧Source Driver

221‧‧‧Shift multiplexer

222‧‧‧ Output multiplexer

230‧‧‧ display panel

231‧‧‧ pixel unit

S ₁ ~S _M ‧‧‧ scan line

D ₁ ~D _N ‧‧‧ data line

CH ₁ ~CH _N+1 ‧‧‧ drive channel

SR ₁ ~SR _N ‧‧‧Shift register

L ₁ ~L _N+1 ‧‧‧ data lock

DP ₁ ~DP _N ‧‧‧ pixel data

VP ₁ ~ VP _N ‧‧‧ data drive voltage

Claims (12)

A display device includes: a display panel having a plurality of scan lines, each of the scan lines having 2×N pixel units, wherein N is a positive integer; and a first source driver and a second source driver Each of the source drivers includes a plurality of driving channels, and in the first scanning period, the (N+1)th driving channel in the first source driver and the (N+1)th in the second source driver The drive channel is disabled and the first to Nth drive channels of the first source driver and the first to Nth drive channels of the second source driver respectively drive one of the scan lines 2×N pixel units on the first scan line, in a second scan period, the first drive channel of the first source driver and the first drive channel of the second source driver are disabled and the first source Driving from the second driving channel to the (N+1)th driving channel of the polar driver and the second driving channel to the (N+1)th driving channel of the second source driver respectively driving one of the scan lines 2×N pixel units, wherein the (N+1) driving pass in the first source driver The track is coupled to the first drive channel of the second source driver. The display device of claim 1, wherein the plurality of odd drive channels in each of the source drivers respectively output a plurality of data driving voltages having a first polarity, and the plurality of even numbers in each of the source drivers The driving channels respectively output a plurality of data driving voltages having a second polarity. The display device of claim 1, wherein the first source driver further comprises: a plurality of shift registers coupled in series with each other to control the first to Nth drive channels to receive the plurality of first to Nth pixel units corresponding to the first scan line during the first scan period a pixel data, and controlling the second driving channel to the (N+1)th driving channel of the first source driver to receive the first to Nth pictures corresponding to the second scanning line during the second scanning period A plurality of pixel data of the prime unit. The display device of claim 1, wherein the second source driver further comprises: a plurality of shift registers coupled in series to control the first driving channel of the second source Up to the Nth drive channel to receive a plurality of pixel data corresponding to the (N+1)th pixel unit to the (2×N) pixel unit on the first scan line, and to control the second source The second driving channel to the (N+1)th driving channel of the driver receive a plurality of pixel data corresponding to the (N+1)th pixel unit to the (2×N) pixel unit on the second scanning line. The display device of claim 1, wherein the first scanning period is an enabling period of the first scanning line, and the second scanning period is an enabling period of the second scanning line. The display device according to claim 1, wherein (2×N) is a multiple of 3. The display device of claim 1, wherein the first scan line is one of a plurality of odd scan lines of the scan lines, and the second scan line is a plurality of even scans of the scan lines One of the lines. The display device of claim 1, wherein the display panel comprises a plurality of data lines, wherein the data lines are respectively coupled to the respective sources. The (2×N) pixel units on the first scan line are respectively coupled to the first data line to the (2×N) data line, and the second scan line (2) The ×N) pixel units are respectively coupled to the second data line to the (2×N+1) data line. A display device includes: a display panel having a plurality of scan lines, each of the scan lines having 2×N pixel units, wherein N is a positive integer; and a first source driver and a second source driver Each of the source drivers includes a plurality of driving channels, and in the first scanning period, the (N+1)th driving channel in the first source driver and the (N+1)th in the second source driver The drive channel is disabled and the first to Nth drive channels of the first source driver and the first to Nth drive channels of the second source driver respectively drive one of the scan lines 2×N pixel units on the first scan line, in a second scan period, the first driving channel and the (N+1)th driving channel of the first source driver are disabled, and the first source is Driving from the second to Nth driving channels of the driver and the first to the (N+1)th driving channels of the second source driver respectively drive 2×N of one of the scan lines a pixel unit, wherein the (N+1)th driving channel of the first source driver is coupled to the two sources The first drive channel in the pole drive. The display device of claim 9, wherein the display panel comprises a plurality of data lines, wherein the data lines are respectively coupled to the driving channels, and the N pixel units of the first scanning line are respectively coupled From the first data line to the Nth data line, and the N pixel units on the second scan line are respectively coupled Connect to the 2nd data line to the (N+1) data line. A display device includes: a display panel having a plurality of scan lines, each of the scan lines having 2×N pixel units, wherein N is a positive integer; and a first source driver and a second source driver And a third source driver, each of the source drivers includes a plurality of driving channels, and in the first scanning period, the (N+1)th driving channel and the second source driver in the first source driver The (N+1)th drive channel and the (N+1)th drive channel of the third source driver are disabled, and the first to Nth drive channels of the first source driver are The first to Nth drive channels of the second source driver and the first to Nth drive channels of the third source driver respectively drive 3×N of one of the scan lines a pixel unit, in a second scanning period, the first driving channel and the (N+1)th driving channel of the first source driver and the (N+1)th driving channel of the second source driver are lost The second driving channel to the Nth driving channel of the first source driver and the second source driving The first to nth driving channels of the device and the first to nth (N+1)th driving channels of the third source driver respectively drive 3×N of one of the scan lines a pixel unit, wherein the (N+1)th driving channel of the first source driver and the second source driver are respectively coupled to the first driver of the second source driver and the third source driver aisle. The display device of claim 11, wherein the plurality of odd drive channels in each of the source drivers respectively output a plurality of data driving voltages having a first polarity, and the plurality of source drivers The even drive channels respectively output a plurality of data drive voltages having a second polarity.