CN101345030B - Display device and method for driving display panel thereof - Google Patents

Abstract

A display device and a driving method of a display panel thereof are provided. Each row of data lines in the display panel has two sub data lines. The driving method includes dividing an input image signal into a plurality of image sections, each image section having display data of pixels coupled to two adjacent rows of scanning lines, dividing each K image sections into a group, and inserting a reset data into the image section of each group to form an image signal. The display data of a first group is written into the first group by dividing K times according to the first initial waveform, after a set time of the first initial waveform, the scanning lines corresponding to the first group are driven simultaneously according to a second initial waveform, and the reset data is output to the first sub data lines and the second sub data lines.

Description

Display device and method for driving display panel thereof

technical field

The present invention relates to a display device and a method for driving a display panel thereof, and in particular to a liquid crystal display device and a method for driving a display panel thereof.

Background technique

In order to meet the demand for image quality in the LCD TV market, the application of liquid crystal display panels is gradually moving towards high resolution, impulse system and high frame rate specifications. However, each of the above specifications will affect the charging time which is already a margin, please refer to the following instructions.

FIG. 1 is a block diagram of a known double frame rate display system. The display panel 101 of this system is divided into upper and lower halves, and the gate drivers 102, 103 on the left and right sides of the display panel 101 are used to drive the scan lines (not shown) in the display panel 101 to further turn on The pixels (pixels) coupled by the scan lines are matched with the source drivers 104 and 105 on the upper and lower sides of the display panel 101 to respectively provide the required display data.

The above-mentioned system also adopts the technology of the pulse system, so the timing of each signal in the system is shown in Figure 2. Fig. 2 is a timing diagram of each signal of the system shown in Fig. 1, wherein STV1~STV4 are gate initial drive signals, VCLK is a clock signal, OE is an output enable signal, and /OE is an inverse signal of OE. VG1-VGn are gate pulse signals. As can be seen from Figure 2, the technology of the pulse system adopts the time-division driving method of each scanning line to separate the writing time of image data and reset signal (used to insert black screen). In addition, with the help of Figure 2, it can also be seen that if the writing time of the image data and the reset signal is equally divided, the effective charging time of the above two is H/2-Trc, where H is the scanning time of the scanning line, and Trc is RC delay time. If the writing time of image data and reset signal is not evenly divided, for example, the image data is written in 2H/3 time, and the reset signal is written in H/3 time, the effective charging time of the above two They are 2H/3-Trc and H/3-Trc respectively.

Originally using the reset signal to insert a black screen is to solve the problem of motion blur caused by the hold-type display, but under the condition of increasing the screen update rate, the charging time will be reduced Facing the limit even more, even if the charging time of the image data is barely extended, the charging time of the reset signal will be insufficient, resulting in invalid charging, and then the target value of the reset signal cannot be reached, and the simulated pulse display (impulse type display) effect will be discounted, and the phenomenon of dynamic residual image cannot be effectively improved.

Contents of the invention

The purpose of the present invention is to provide a display device which can provide double frame update rate and can effectively eliminate motion residual images.

Another object of the present invention is to provide a driving method for a display panel, which can provide a double frame refresh rate and can effectively eliminate motion afterimages.

Based on the above and other objectives, the present invention provides a display device, which includes a display panel, a gate driver, a first source driver, and a second source driver. The above-mentioned display panel includes M columns of scanning lines, N rows of data lines, and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line, and the above-mentioned pixels are arranged in a matrix , the pixel at the i-th column and the j-th row is expressed as P(i, j), and 1≤i≤M, and 1≤j≤N, and the first sub-data line of the j-th row and the i-th column scan The line is coupled to the pixel P(i, j), the second sub-data line of the jth row and the scan line of the i+1th column are coupled to the pixel P(i+1, j), wherein N, M, i, j All are positive integers. The gate driver is used to drive the scanning lines, and the first source driver and the second source driver are used to control the first sub-data lines and the second sub-data lines respectively, and output image signals. The above-mentioned image signal has a plurality of image segments, each image segment has display data of pixels coupled by two adjacent scan lines, and each K image segments are defined as a group, K is a positive integer, Each group of image segments has a reset data. The gate driver drives the scan lines corresponding to a first group K times according to the first start waveform, and drives the scan lines of two adjacent columns each time. When two adjacent scanning lines are driven, the first source driver outputs the display data corresponding to the pixels coupled to the i-th column of the driven scanning lines, while the second source driver outputs the display data corresponding to the driven Display data of pixels coupled to the i+1th column of the scan lines. After the gate driver receives the first initial waveform for a predetermined time, it simultaneously drives the scanning lines corresponding to the first group according to the second initial waveform, and the first source driver and the second source driver respectively Outputting reset data to the first sub-data line and the second sub-data line.

Based on the above and other objectives, the present invention further provides a display device, which includes a display panel, a gate driver, a first source driver, and a second source driver. The above-mentioned display panel includes M columns of scanning lines, N rows of data lines, and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line, and the above-mentioned pixels are arranged in a matrix , the pixel at the i-th column and the j-th row is denoted as P(i, j), and 1≤i≤M, and 1≤j≤N, and the first sub-data line of the j-th row is respectively coupled to the first The pixel P(i,j) of the scanning line coupling point in the i column, the pixel P(i+1,j) of the scanning line coupling point in the i+1th column, and the pixel P(i+ n, j), the second sub-data line in the jth row is respectively coupled to the pixel P(i+n+1, j) at the coupling point of the scanning line in the i+n+1th column, and the scanning line in the i+n+2th column The pixel P(i+n+2,j) of the line coupling point to the pixel P(i+2n+1,j) of the i+2n+1th column of the scanning line coupling point, where N, M, i, j and n All are positive integers. The gate driver is used to drive the scanning lines, and the first source driver and the second source driver are used to control the first sub-data lines and the second sub-data lines respectively, and output image signals. The above-mentioned image signal has a plurality of image segments, each image segment has display data of pixels coupled by two adjacent scan lines, and each K image segments are defined as a group, K is a positive integer, Each group of image segments has a reset data. The gate driver drives the scan lines corresponding to a first group K times according to the first start waveform, and drives the scan lines of two adjacent columns each time. When two adjacent scanning lines are driven, the first source driver outputs the display data corresponding to the pixels coupled to the i-th column of the driven scanning lines, while the second source driver outputs the display data corresponding to the driven Display data of pixels coupled to the i+1th column of the scan lines. After the gate driver receives the first initial waveform for a predetermined time, it simultaneously drives the scanning lines corresponding to the first group according to the second initial waveform, and the first source driver and the second source driver respectively Outputting reset data to the first sub-data line and the second sub-data line.

Based on the above and other objectives, the present invention further provides a display device, which includes a display panel, a gate driver and a source driver. The above-mentioned display panel includes M columns of scanning lines, N rows of data lines, and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line, and the above-mentioned pixels are arranged in a matrix , the pixel at the i-th column and the j-th row is expressed as P(i, j), and 1≤i≤M, and 1≤j≤N, and the first sub-data line of the j-th row and the i-th column scan The line is coupled to the pixel P(i, j), the second sub-data line of the jth row and the scan line of the i+1th column are coupled to the pixel P(i+1, j), wherein N, M, i, j All are positive integers. The gate driver is used to drive the scanning lines, and the source driver is used to control the first sub-data lines and the second sub-data lines, and output image signals. The above-mentioned image signal has a plurality of image segments, each image segment has display data of pixels coupled by two adjacent scan lines, and each K image segments are defined as a group, K is a positive integer, Each group of image segments has a reset data. The gate driver drives the scanning lines corresponding to a first group in K times according to the first initial waveform, and drives the scanning lines of two adjacent columns each time. When two adjacent scanning lines are driven, the source driver outputs the display data corresponding to the pixels coupled to the i-th column of the driven scanning lines to the above-mentioned first sub-data line, and outputs the display data corresponding to The display data of the pixels coupled to the (i+1)th column scan line among the drive scan lines is output to the second sub-data line. After receiving the first initial waveform for a predetermined time, the gate driver simultaneously drives the scan lines corresponding to the first group according to the second initial waveform, and outputs the reset data to the first group by the source driver. The sub-data line and the above-mentioned second sub-data line.

Based on the above and other objectives, the present invention further proposes a display device, which includes a display panel, a gate driver and a source driver. The above-mentioned display panel includes M columns of scanning lines, N rows of data lines, and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line, and the above-mentioned pixels are arranged in a matrix , the pixel at the i-th column and the j-th row is denoted as P(i, j), and 1≤i≤M, and 1≤j≤N, and the first sub-data line of the j-th row is respectively coupled to the first The pixel P(i,j) of the scanning line coupling point in the i column, the pixel P(i+1,j) of the scanning line coupling point in the i+1th column, and the pixel P(i+ n, j), the second sub-data line in the jth row is respectively coupled to the pixel P(i+n+1, j) at the coupling point of the scanning line in the i+n+1th column, and the scanning line in the i+n+2th column The pixel P(i+n+2,j) of the line coupling point to the pixel P(i+2n+1,j) of the i+2n+1th column of the scanning line coupling point, where N, M, i, j and n All are positive integers. The gate driver is used to drive the scanning lines, and the source driver is used to control the first sub-data lines and the second sub-data lines, and output image signals. The above-mentioned image signal has a plurality of image segments, each image segment has display data of pixels coupled by two adjacent scan lines, and each K image segments are defined as a group, K is a positive integer, Each group of image segments has a reset data. The gate driver drives the scan lines corresponding to a first group K times according to the first start waveform, and drives the scan lines of two adjacent columns each time. When two adjacent scanning lines are driven, the source driver outputs the display data corresponding to the pixels coupled to the i-th column of the driven scanning lines to the above-mentioned first sub-data line, and outputs the display data corresponding to The display data of the pixels coupled to the (i+1)th column scan line among the drive scan lines is output to the second sub-data line. After receiving the first initial waveform for a predetermined time, the gate driver simultaneously drives the scan lines corresponding to the first group according to the second initial waveform, and outputs the reset data to the first group by the source driver. The sub-data line and the above-mentioned second sub-data line.

Based on the above and other objectives, the present invention proposes a method for driving a display panel. The above-mentioned display panel includes M columns of scanning lines, N rows of data lines and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line, and the above-mentioned pixels are arranged in a matrix, and the position is The pixels in the i-th column and the j-th row are represented as P(i, j), and 1≤i≤M, and 1≤j≤N, and the first sub-data line of the j-th row and the scanning line of the i-th column are coupled To the pixel P(i, j), the second sub-data line in the jth row and the scan line in the i+1th column are coupled to the pixel P(i+1, j), where N, M, i, and j are all positive integer. The driving method includes the following steps. Firstly, an input video signal is provided. Next, the input image signal is divided into a plurality of image segments, wherein each image segment has display data of pixels coupled to two adjacent scan lines. Then, divide every K image segments into a group, where K is a positive integer. Next, a reset data is inserted into each group of image segments. Then, according to the first initial waveform, the scan lines corresponding to a first group are driven K times, and the scan lines of two adjacent columns are driven each time. When the scan lines of two adjacent columns are driven, the The display data of the pixels coupled to the scan line in the i-th column of the driven scan lines is provided to the first sub-data line, and the display data of the pixels coupled to the scan line in the i+1th column of the driven scan lines is supplied to to the above-mentioned second sub-data line. Then, after the first start waveform for a predetermined time, simultaneously drive the scan lines corresponding to the first group according to the second start waveform, and output reset data to the first sub-data lines and the second sub-data lines. data line.

Based on the above and other objectives, the present invention further proposes a driving method of a display panel. The above-mentioned display panel includes M columns of scanning lines, N rows of data lines and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line, and the above-mentioned pixels are arranged in a matrix, and the position is The pixels in the i-th column and j-th row are represented by P(i, j), and 1≤i≤M, and 1≤j≤N, and the first sub-data lines in the j-th row are respectively coupled to the i-th column scanning The pixel P(i,j) of the line coupling point, the pixel P(i+1,j) of the scanning line coupling point in the i+1th column, and the pixel P(i+n,j) of the scanning line coupling point in the i+nth column ), the second sub-data line in the jth row is respectively coupled to the pixel P(i+n+1, j) of the scanning line coupling point in the i+n+1th column, and the scanning line coupling point in the i+n+2th column Pixel P(i+n+2,j) to the pixel P(i+2n+1,j) of the i+2n+1th column scan line coupling point, where N, M, i, j and n are all positive integer. The driving method includes the following steps. Firstly, an input video signal is provided. Then, the input image signal is divided into a plurality of image segments, wherein each image segment has display data of pixels coupled to two adjacent scan lines. Next, divide every K image segments into a group, where K is a positive integer. Then, a reset data is inserted into each group of image segments. Then, according to the first initial waveform, the scan lines corresponding to a first group are driven K times, and the scan lines of two adjacent columns are driven each time. When the scan lines of two adjacent columns are driven, the The display data of the pixels coupled to the scan line in the i-th column of the driven scan lines is provided to the first sub-data line, and the display data of the pixels coupled to the scan line in the i+1th column of the driven scan lines is supplied to to the above-mentioned second sub-data line. Then, after a predetermined time of the first initial waveform, the scanning lines corresponding to the first group are simultaneously driven according to the second initial waveform, and the reset data is output to the first sub-data line and the second sub-data line. data line.

The present invention adopts a special display panel, in which each row of data lines has two sub-data lines. And the present invention firstly divides the input image signal into a plurality of image segments, and each image segment has display data of pixels coupled to two adjacent scan lines. Then, every K image segments are divided into a group, and then a reset data is inserted into the image segments of each group to form an image signal. Next, write the display data of a first group K times according to the first initial waveform, and drive the corresponding first group simultaneously according to a second initial waveform after a predetermined time of the first initial waveform. the scan line, and output the reset data to the first sub-data line and the second sub-data line. Accordingly, the present invention can provide a double frame update rate, and can effectively eliminate dynamic afterimages. In addition, since the polarity of the sub-data lines does not change in a frame, the present invention can simultaneously reset the data of the pixels of adjacent scan lines.

In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments will be described in detail below together with the accompanying drawings.

Description of drawings

FIG. 1 is a block diagram of a known double frame rate display system.

FIG. 2 is a timing diagram of each signal of the system shown in FIG. 1 .

FIG. 3 is a block diagram of a display device according to an embodiment of the invention.

FIG. 4 is an implementation block diagram of the display panel in FIG. 3 .

FIG. 5 is a schematic diagram of a data reorganization method according to the embodiment shown in FIG. 3 and FIG. 4 .

FIG. 6 is a timing diagram of some signals of the circuit in FIG. 4 .

FIG. 7 is a schematic diagram of a scanning line control method according to an embodiment of the present invention.

FIG. 8 shows a schematic diagram of a data polarity control method of the circuit in FIG. 4 during operation.

FIG. 9 is a block diagram of another embodiment of the display panel in FIG. 3 .

FIG. 10 is a schematic diagram of a data reorganization method according to the embodiment shown in FIG. 3 and FIG. 9 .

FIG. 11 is a timing diagram of some signals of the circuit in FIG. 9 .

FIG. 12 is a schematic diagram of a data polarity control method of the circuit of FIG. 9 in operation.

FIG. 13 is a block diagram of another embodiment of the display panel in FIG. 3 .

FIG. 14 is a flowchart of a driving method of a display panel according to an embodiment of the invention.

The main reference signs are explained as follows

53～56, 63～66: scanning unit

101: display panel

102, 103, 401, 901, 1302: gate driver

104, 105, 402, 403, 1303: source driver

301: Computational Unit

302: data reorganization unit

303: Timing controller

304: display panel

404, 405, 904~907: pixels

501, 502, 801, 802, 1001, 1002, 1201, 1202: marked

1301: pixel matrix

A: screen

CPV: gate clock signal

CS: multiple control signals

DATA1: input image signal

DATA2: image signal

DE1, DE2: data enable signal

D ₁ ～D _N , D _1' ～D _N' : sub-data lines

G ₁ ～G _B , G _B+1 ～G _2B , G _2B+1 ～G _3B , G _3B+1 ～G _4B , G53 ₁ ～G53 ₄ , G54 ₁ ～G54 ₄ , G55 ₁ ～G55 ₄ , G56 ₁ ~G56 ₄ : Scanning line

OE, OE1～OE4, OED, OEB: output enable signal,

/OE: Inverted signal of OE,

RD: reset data

STV, STV1～STV4: gate start drive signal

STVD, STVB: start waveform

T: period

Tbk: established time

VCLK: clock signal

VG1 ~ VGn: gate pulse signal.

1404～1406: steps

Detailed ways

FIG. 3 is a display device according to an embodiment of the invention. The display device includes a computing unit 301 , a data reorganization unit 302 , a timing controller 303 and a display panel 304 . The operation of the above-mentioned components will be briefly described below. The calculation unit 301 generates reset data RD according to the input image signal DATA1 and a count relationship related to a plurality of image segments (to be described later). Wherein, the reset data RD can be all black, all white or any single grayscale image data. The data reorganization unit 302 is used for receiving the input image signal DATA1 and the reset data RD, and performing data reorganization on the input image signal DATA1 and the reset data RD to generate the image signal DATA2. The timing controller 303 receives the image signal DATA2 to generate a plurality of control signals CS, and the timing controller 303 transmits the above-mentioned plurality of control signals CS and the image signal DATA2 to the display panel 304, thereby controlling the display panel 304 to display the image signal DATA2 .

FIG. 4 is an embodiment of the display panel shown in FIG. 3, which shows the coupling relationship between the internal components of the display panel 304 and the timing controller 303, and the image signal DATA2 and multiple components transmitted from the timing controller 303 to the display panel 304. Control signal CS. The above-mentioned plurality of control signals CS include a gate clock signal CPV, a gate start driving signal STV, and output enable signals OE1 - OE4 . The display panel 304 includes a gate driver 401 , source drivers 402 and 403 , 16 columns of scan lines, N rows of data lines and 16×N pixels. The 16 columns of scanning lines are marked by G53 ₁ ~ G53 ₄ , G54 ₁ ~ G54 ₄ , G55 ₁ ~ G55 ₄ , G56 ₁ ~ G56 ₄ respectively, and each row of data lines above includes a first sub-data line and a second sub-data line. The sub-data lines, the first sub-data lines are respectively marked by D _{1 -DN} , and the second sub-data lines are respectively marked by D _1' - _DN' . The above-mentioned 16×N pixels are arranged in a matrix, and the figure shows the coupling relationship of one row of pixels in the pixel matrix. For example, the pixel 404 is coupled to the scan line _G531 and the sub-data line _D1 , and the pixel 405 is coupled to the scan line _G532 and the sub-data line D1 _' .

The gate driver 401 further includes four scanning units, which are marked with 53-56, and each scanning unit is used to drive four columns of scanning lines. For example, the scanning unit 53 operates according to the gate clock signal CPV, the gate start driving signal And output enable signal OE1 to drive scan lines G53 ₁ -G53 ₄ . After the gate driver 401 receives the gate start driving signal STV, the gate start driving signal STV is transmitted from the inside of the scanning unit 53 and gradually transmitted to the scanning unit 56 . When the scanning unit receives the gate initial driving signal STV, the scanning unit can drive the coupled scanning line according to the transmission position of the gate initial driving signal STV, and at the same time, the source drivers 402 and 403 send out the corresponding image signal DATA2 image data.

The operation of the circuit in FIG. 4 will be described in detail below, but before that, it is necessary to explain the data reorganization method of the input image signal DATA1 and the reset data RD, please refer to FIG. 5 . FIG. 5 is a schematic diagram of a data reorganization method according to the embodiment shown in FIG. 3 and FIG. 4 . In this figure, DE1 is the data enable signal corresponding to the input image signal DATA1, DE2 is the data enable signal corresponding to the image signal DATA2, CPV is the above gate clock signal, and OED and OEB represent each of the above output enable signals. There are two signal types of energy signals (OE1~OE4). The input image signal DATA1 has a plurality of image segments, and each image segment has display data of pixels coupled to two adjacent scan lines. For example, in the image segment indicated by 501, there are scan lines G53 ₁ and The display data of the pixels coupled to G53 ₂ , and the display data of the pixels coupled to the scan lines G53 ₃ and G53 ₄ exist in the image segment indicated by 502 .

In this embodiment, every two image segments are defined as a group, and then a reset data RST is inserted into the image segments of each group. Because in a time section Tcycle, there are only two pieces of data originally required to have three pieces of data, and the reset data RST is placed behind each group of image sections, the aforementioned calculation unit 301 Therefore, the placement position of the reset data RST must be generated according to such a counting relationship. In addition, since the image signal DATA2 is obtained through data recombination, the image signal DATA2 is naturally delayed by a Tdelay time compared with the input image signal DATA1. After the image signal DATA2 is obtained, it is necessary to properly control the signal type of the output enable signal received by each scanning unit, so as to correctly drive the corresponding scanning line according to the data timing of the image signal DATA2, and then make the pixel The correct loading data can be received. That is to say, when the output enable signal exhibits the type OED and presents a low potential (as shown by T1), it is time to load the display data to the corresponding pixel, and when the output enable signal exhibits the type OEB , and presents a low potential (shown as T2), it is time to load the reset data to the corresponding pixel.

FIG. 6 is a timing diagram of some signals of the circuit in FIG. 4, which shows the gate clock signal CPV, two types of output enable signals (OED and OEB), the gate start drive signal STV, and each scanning line. The timing of the gate pulse signal. Wherein, the gate initial driving signal STV has two initial waveforms, represented by STVD and STVB respectively. Please refer to FIG. 4 and FIG. 6 at the same time for a more detailed explanation of the operation of the circuit in FIG. 4 . When the timing controller 303 transmits the initial waveform STVD to the scanning unit 53, and provides the output enable signal OE1 of the OED type to the scanning unit 53, and provides the output enable signal OE3 of the OEB type to the scanning unit 55, Then the scanning unit 53 starts to operate according to the initial waveform STVD, the gate clock signal CPV and the output enable signal OE1 of the OED type.

With the transfer of the initial waveform STVD in the scanning unit 53, the scanning unit 53 drives the scanning lines corresponding to the first group of DATA2 in the image signal in two times, and drives the scanning lines of two adjacent columns each time. Wire. That is to say, when the OED-type output enable signal OE1 is at a low logic potential (low), the scanning unit 53 will simultaneously drive two scanning lines. In this example, the scan unit 53 first drives the scan lines G53 ₁ and G53 ₂ simultaneously, and then drives the scan lines G53 ₃ and G53 ₄ simultaneously. While the scanning unit 53 drives the scanning lines G53 ₁ and G53 ₂ , the source driver 402 outputs the display data of the pixels coupled to the scanning line G53 ₁ , and the source driver 403 outputs the display data of the pixels coupled to the scanning line G53 ₂ data. While the scanning unit 53 drives the scanning lines G53 ₃ and G53 ₄ , the source driver 402 outputs the display data of the pixels coupled to the scanning line G53 ₃ , and the source driver 403 outputs the display data of the pixels coupled to the scanning line G53 ₄ data.

After a short period of time, the initial waveform STVD is delivered to the scanning unit 54, at this time the timing controller 303 will also provide the output enable signal OE2 of the OED type to the scanning unit 54, and enable the output of the OEB type The signal OE4 is provided to the scanning unit 56 . After the scanning unit 54 receives the initial waveform STVD, the scanning unit 54 also drives the scanning lines corresponding to the second group in the image signal in a manner of dividing into two times, that is, simultaneously drives the scanning lines G54 ₁ and G54 ₂ at the same time. , and then simultaneously drive the scanning lines G54 ₃ and G54 ₄ . While driving the scanning lines _G541 and _G542 , the source driver 402 will correspondingly output the display data of the pixels coupled to the scanning line _G541 , and the source driver 403 will correspondingly output the display data of the pixels coupled to the scanning line _G542 . Display Data. While driving the scan lines _G543 and _G544 , the source driver 402 will output the display data of the pixels coupled to the scan line _G543 , and the source driver ₄₀₃ will output the pixels coupled to the scan line G544. display data. Generally speaking, while driving two adjacent scan lines, the source driver 402 will correspondingly output the display data of the pixels coupled to the i-th column scan line among the driven scan lines, and the source driver 403 will correspondingly output The display data of the pixels coupled to the (i+1)th scan line among the driven scan lines.

Then, the timing controller 303 transmits the start waveform STVB to the scanning unit 53 . That is to say, the timing controller 303 outputs the start waveform STVB after outputting the start waveform STVD for a predetermined time. At the same time, the timing controller 303 provides the output enable signal OE3 of the OED type to the scanning unit 55, and provides the output enable signal OE1 of the OEB type to the scanning unit 53, and then the initial waveform STVD is also transmitted to the scanning unit. Unit 55. Therefore, the scanning unit 53 starts to act according to the initial waveform STVB, the gate clock signal CPV and the output enable signal OE1 of the OEB type, and the scanning unit 55 also starts to operate according to the initial waveform STVD, the gate clock signal CPV and OED Type of output enable signal OE3 and action. Certainly, the predetermined time mentioned above can be set according to actual needs, and is not limited by this embodiment.

Since no matter the output enable signal of the OED type or the OEB type, the scan line is enabled only when it presents a low logic potential. Therefore, when the scanning unit 55 drives the scanning lines (G55 ₁ -G55 ₄ ) corresponding to the third group in the image signal according to the initial waveform STVD, the gate clock signal CPV and the OED-type output enable signal OE3 Because the output enable signal OE1 of the OEB type presents a high logic potential (high), the scan unit 53 will not drive the scan line coupled to it at this time, and since there is no initial waveform in the scan unit 54 at this time and 56 , so the scan units 54 and 56 will not drive the scan lines to which they are coupled.

While the scan unit 55 is driving the scan line to which it is coupled, the source driver 402 will correspondingly output the display data of the pixels coupled to the i-th column scan line in the driven scan line, and the source driver 403 will correspondingly output The display data of the pixels coupled to the (i+1)th scan line among the driven scan lines. Then, the OED-type output enable signal OE3 presents a high logic potential, while the OEB-type output enable signal OE1 presents a low logic potential. Therefore, the scanning unit 53 uses this period of time to simultaneously drive the scanning lines G53 ₁ -G53 ₄ , and at the same time, the source drivers 402 and 403 both output reset data, so as to display data for the pixels coupled to the scanning lines G53 ₁ -G53 ₄ The reset of these pixels avoids the problem of motion afterimages and achieves the effect of a pulsed system.

Next, the initial waveforms STVD and STVB are delivered to the scanning units 56 and 54 respectively, and the timing controller 303 provides the output enable signal OE4 of the OED type to the scanning unit 56, and the output enable signal of the OEB type OE2 is provided to the scanning unit 54 . Therefore, the scanning unit 54 starts to operate according to the initial waveform STVB, the gate clock signal CPV and the output enable signal OE2 of the OEB type, and the scanning unit 56 also starts to operate according to the initial waveform STVD, the gate clock signal CPV and OED. Type of output enable signal OE4 and action.

Since both the start waveforms STVD and STVB are transmitted in the gate driver 401 , the pixels indirectly coupled to each scanning unit perform data reset after a predetermined period of time after starting to load display data. In addition, with the help of the above-mentioned new panel frame and new driving method, it can also be known that the polarity of each sub-data line in the same frame (frame) does not need to be changed, and in a period T (as shown in Figure 6) It only needs to write reset data once, so whether it is image data or reset data, the limited charging time can be effectively used. In addition, because the output enable signals of the OED type and the OEB type have different time points at which they exhibit low logic potentials, there is no situation in which wrong data is loaded to the pixels. That is to say, the pixel that receives the display data does not receive the reset data RST, and the pixel that receives the reset data RST does not receive the display data.

In order to illustrate the scanning line control method of the present invention more clearly, a brief description will be given below with reference to FIG. 7 . FIG. 7 is a schematic diagram of a scanning line control method according to an embodiment of the present invention, which shows the signal types of the output enable signals received by the scanning units 53 - 56 in a frame A. Referring to FIG. This figure clearly shows that after the gate driver 401 receives the initial waveform STVD, the scanning units 53-56 will receive the output enable signal of the OED type for a period of time in sequence, and each scanning unit will After the start waveform STVD for a predetermined time Tbk, the start waveform STVB will be received again.

According to the operation method described in FIG. 6 , the polarity control sequence shown in FIG. 8 can be obtained. FIG. 8 shows a schematic diagram of the data polarity control mode of the circuit in FIG. 4 during operation, wherein POL1 and POL2 represent the polarity control signals of the source drivers 402 and 403 respectively. In this figure, there are two places where the polarity is changed, one of which is the time point when the (n-1)th picture is switched to the nth picture, marked by 801, indicating that the polarity of the display data should be changed at this time. Another place where the polarity is changed is the time point when the (n-1)th reset screen is switched to the nth reset screen, which is marked by 802, indicating that the polarity of the reset data should be switched at this time. Since the output polarity of the sub-data line has been designed and planned in the panel frame, whether it is displaying data or resetting data, within the same screen time, as long as the operation mode of column inversion is used, the collocation such as The scanning line control method shown in FIG. 7 can realize a pulse system, and whether it is displaying data or resetting data, it can have an optimized image quality with a little inversion (dotinversion).

Based on the spirit of the foregoing embodiments, there is another display panel frame that can also implement the driving method of the present invention, and this panel frame is shown in FIG. 9 . FIG. 9 is another embodiment of the display panel in FIG. 3 , which shows the coupling relationship between the internal components of the other display panel 304 and the timing controller 303, and the images transmitted from the timing controller 303 to the display panel 304. Signal DATA2 and multiple control signals CS. Please refer to FIG. 4 and FIG. 9 . By comparing the display panel frames shown in the two, it can be found that the difference is that the pixels in FIG. 9 are coupled in a 2-line inversion manner. Taking the first four pixels of the row of pixels listed in FIG. 9 as an example, the pixel 904 is coupled to the sub-data line D ₁ and the scan line G63 ₁ , and the pixel 905 is coupled to the sub-data line D _1' and the scan line G63 ₂ , The pixel 906 is coupled to the sub-data line D _{1 ′} and the scan line G63 ₃ , and the pixel 907 is coupled to the sub-data line D ₁ and the scan line G63 ₄ , and so on. In addition, in the gate driver 901 , for example, each scanning unit is responsible for driving 8 columns of scanning lines, and the scanning unit 63 is responsible for driving the scanning lines G63 ₁ -G63 ₈ .

FIG. 10 is a schematic diagram of a data reorganization method according to the embodiment shown in FIG. 3 and FIG. 9 . In this figure, DE1 is the data enable signal corresponding to the input image signal DATA1, DE2 is the data enable signal corresponding to the image signal DATA2, CPV is the above gate clock signal, and OED and OEB represent each of the above output enable signals. There are two signal types of energy signals (OE1~OE4). The input image signal DATA1 has a plurality of image segments, and each image segment has display data of pixels coupled to two adjacent scan lines, for example, in the image segment indicated by 1001, there are scan lines G63 ₁ and The display data of the pixels coupled to G63 ₂ , and in the image segment indicated by 1002 , there are display data of the pixels coupled to the scan lines G63 ₃ and G63 ₄ .

Please refer to Figure 5 and Figure 10 at the same time. After comparison, it can be found that the data reorganization method shown in FIG. 10 defines every four video segments as a group, and then inserts a reset data RST into the video segments of each group. Because in a time section Tcycle, there are only four pieces of data originally required to have five pieces of data, and the reset data RST is placed behind the video sections of each group, so the aforementioned calculation unit 301 The placement position of the reset data RST must be generated according to such a counting relationship.

FIG. 11 is a timing diagram of some signals of the circuit in FIG. 9, which shows the gate clock signal CPV, two types of output enable signals (OED and OEB), the gate start drive signal STV and each scanning line. The timing of the gate pulse signal. Wherein, the gate initial driving signal STV also has two initial waveforms, represented by STVD and STVB respectively. Please refer to FIG. 6 and FIG. 11 at the same time. By comparing the two, it can be found that FIG. 11 is different from FIG. 6 in that the timing described in FIG. Drive, and when writing reset data, drive 8 scan lines at the same time.

According to the operation method described in FIG. 11 , the polarity control sequence shown in FIG. 12 can be obtained. FIG. 12 shows a schematic diagram of the data polarity control mode of the circuit in FIG. 9 during operation, wherein POL1 and POL2 represent the polarity control signals of the source drivers 402 and 403 respectively. In this figure, there are also two places where the polarity is changed, one of which is the time point when the (n-1)th picture is switched to the nth picture, marked by 1201, indicating that the polarity of the display data should be changed at this time. Another place where the polarity is changed is the time point when the (n-1)th reset screen is switched to the nth reset screen, which is marked by 1202, indicating that the polarity of the reset data should be switched at this time.

Those familiar with this technology should know that, in addition to using two source drivers to drive the data lines in the above embodiment, it is also possible to use a single source driver to drive the data lines, as shown in FIG. 13 . FIG. 13 is another embodiment of the display panel shown in FIG. 3 , where the pixel coupling method of the pixel matrix 1301 can be the framework shown in FIG. 4 or FIG. The unit is responsible for driving B scanning lines, where B is a positive integer, and the difference is that the source driver 1303 is responsible for driving all sub-data lines, namely D ₁ -D _N and D _1' -D _N' . Regardless of whether the coupling mode of the pixels in FIG. 13 is the frame shown in FIG. 4 or FIG. 9 , the above-mentioned driving method can be used, and will not be repeated here.

Although in the above-mentioned embodiments, the display panel is exemplified with 16×N pixels, 32×N pixels or B×N pixels, users should know that if the above-mentioned display panel is extended to have M A display panel with ×N pixels can also implement the present invention, wherein M is also a positive integer, and B<M. In addition, it is not limited to define every two image segments or every four image segments as a group, the user should be able to define every K image segments as a group arbitrarily, wherein K is a positive integer.

According to the teachings of the foregoing embodiments, some basic operation procedures can be summarized, as shown in FIG. 14 . FIG. 14 is a flowchart of a driving method of a display panel according to an embodiment of the invention. First, an input image signal is provided (eg step 1401). Next, the input image signal is divided into a plurality of image segments, wherein each image segment has display data of pixels coupled to two adjacent scan lines (such as step 1402 ). Then, divide every K image segments into a group (such as step 1403). Next, a reset data is inserted into each group of image segments (such as step 1404). Then, according to the first initial waveform, the scan lines corresponding to a first group are driven K times, and the scan lines of two adjacent columns are driven each time. When the scan lines of two adjacent columns are driven, the The display data of the pixels coupled to the scan line in the i-th column of the driven scan lines is provided to the first sub-data line, and the display data of the pixels coupled to the scan line in the i+1th column of the driven scan lines is supplied to to the above-mentioned second sub-data line (such as step 1405). Then, after the first start waveform for a predetermined time, simultaneously drive the scan lines corresponding to the first group according to the second start waveform, and output reset data to the first sub-data lines and the second sub-data lines. data line (such as step 1406).

To sum up, the present invention adopts a special display panel, in which each row of data lines has two sub-data lines. And the present invention firstly divides the input image signal into a plurality of image segments, and each image segment has display data of pixels coupled to two adjacent scan lines. Then, every K image segments are divided into a group, and then a reset data is inserted into the image segments of each group to form an image signal. Next, according to the first initial waveform and divided into K times to write the display data of a first group, after a predetermined period of time after the first initial waveform, drive simultaneously according to a second initial waveform corresponding to the first group the scan line, and output the reset data to the first sub-data line and the second sub-data line. Accordingly, the present invention can provide a double frame update rate, and can effectively eliminate dynamic afterimages. In addition, since the polarity of the sub-data lines does not change in a frame, the present invention can simultaneously reset the data of the pixels of adjacent scan lines.

Although the present invention has been disclosed above with preferred embodiments, it is not intended to limit the present invention. Any person familiar with this technology should be able to make some changes and modifications without departing from the spirit and scope of the present invention. , so the protection scope of the present invention should be considered as defined by the appended claims.

Claims (11)

1. A display device, comprising: A display panel, comprising: M columns of scan lines, M is a positive integer; N rows of data lines, each row of data lines includes a first sub-data line and a second sub-data line, N is a positive integer; and M×N pixels are arranged in a matrix, and the pixel at the i-th column and the j-th row is expressed as P(i, j), where i, j are integers, and 1≤i≤M, and 1≤j≤ N, and the first sub-data line of row j and the scan line of column i are coupled to the pixel P(i, j), the second sub-data line of row j and the scan line of column i+1 are coupled to the pixel P(i+1,j); a gate driver, used to drive the scan lines; a first source driver; and A second source driver, wherein the first source driver and the second source driver are respectively used to control the first sub-data line and the second sub-data line, and output an image signal, the image The signal has a plurality of image segments, and each image segment has display data of pixels coupled to two adjacent scan lines, Wherein, every K image segments are defined as a group, K is a positive integer, and each group of image segments has a reset data, Wherein, the gate driver drives the scan lines corresponding to a first group K times according to a first initial waveform, and drives the scan lines of two adjacent columns each time, when two adjacent columns When the scan line is driven, the first source driver outputs the display data corresponding to the pixels coupled to the i-th column scan line in the driven scan line, and the second source driver outputs the display data corresponding to the i-th column scan line in the driven scan line. the display data of the pixels coupled to the scan line in the i+1th column, Wherein, the gate driver simultaneously drives the scanning lines corresponding to the first group according to a second initial waveform after receiving the first initial waveform for a predetermined time, and the first source The driver and the second source driver output the reset data to the first sub-data line and the second sub-data line respectively. 2. The display device of claim 1, further comprising: a calculation unit, which generates the reset data according to an input image signal and a count relationship, and the count relationship is related to K image segments; a data reorganization unit, coupled to the calculation unit, used to receive the input image signal and the reset data, and perform data reorganization on the input image signal and the reset data, so as to generate the multiple image segments video signal; and a timing controller, receiving the image signal with multiple image segments, and generating the first initial waveform and the second initial waveform, and the timing controller is used for the first initial waveform and the second transmitting the initial waveform to the gate driver, and transmitting the image signal with the plurality of image segments to the first source driver and the second source driver, Wherein, the timing controller controls the gate driver, the first source driver and the second source driver according to the image signal having a plurality of image segments, so that when the first source driver and the second When the source driver outputs an image segment in the image signal having a plurality of image segments, the gate driver drives the scan line corresponding to the image segment, and when the first source driver and the second source driver output When the data in the image signal with multiple image segments is reset, the gate driver drives the scanning line corresponding to the reset data. 3. The display device according to claim 1, wherein the first initial waveform is an initial waveform of an image segment of a gate initial drive signal, and the second initial waveform is the initial gate drive signal a reset data start waveform, and the reset data start waveform follows the predetermined time after the image segment start waveform. 4. The display device as claimed in claim 1, wherein the reset data is image data of any single gray scale. 5. A display device comprising: A display panel, comprising: M columns of scan lines, M is a positive integer; N rows of data lines, each row of data lines includes a first sub-data line and a second sub-data line, N is a positive integer; and M×N pixels are arranged in a matrix, and the pixel at the i-th column and the j-th row is expressed as P(i, j), where i, j are integers, and 1≤i≤M, and 1≤j≤ N, and the first sub-data line of row j and the scan line of column i are coupled to the pixel P(i, j), the second sub-data line of row j and the scan line of column i+1 are coupled to the pixel P(i+1,j); a gate driver for driving the scan lines; and A source driver, used to control the first sub-data line and the second sub-data line, and output an image signal, the image signal has a plurality of image segments, and each image segment has two adjacent columns the display data of the pixels coupled to the scan line, Wherein, every K image segments are defined as a group, K is a positive integer, and each group of image segments has a reset data, Wherein, the gate driver drives the scan lines corresponding to a first group K times according to a first initial waveform, and drives the scan lines of two adjacent columns each time, when two adjacent columns When the scanning line is driven, the source driver outputs the display data corresponding to the pixels coupled to the i-th column scanning line in the driven scanning line to the first sub-data line, and outputs the display data corresponding to the pixel corresponding to the driven scanning line The display data of the pixels coupled to the scan line in the i+1th column is output to the second sub-data line, Wherein, the gate driver simultaneously drives the scanning lines corresponding to the first group according to a second start waveform after receiving the first start waveform for a predetermined time, and the source driver will The reset data is output to the first sub-data line and the second sub-data line. 6. The display device of claim 5, further comprising: a calculation unit, which generates the reset data according to an input image signal and a count relationship, and the count relationship is related to K image segments; a data reorganization unit, coupled to the calculation unit, used to receive the input image signal and the reset data, and perform data reorganization on the input image signal and the reset data, so as to generate the multiple image segments video signal; and a timing controller, receiving the image signal with multiple image segments, and generating the first initial waveform and the second initial waveform, and the timing controller is used for the first initial waveform and the second transmitting the initial waveform to the gate driver, and transmitting the image signal with the plurality of image segments to the source driver, Wherein, the timing controller controls the gate driver and the source driver according to the image signal with a plurality of image segments, so that when the source driver outputs the image in the image signal with a plurality of image segments segment, the gate driver drives the scan line corresponding to the image segment, and when the source driver outputs the reset data in the image signal with multiple image segments, the gate driver drives the reset data corresponding to scan line. 7. The display device according to claim 5 , wherein the first initial waveform is an initial waveform of an image segment of a gate initial drive signal, and the second initial waveform is the gate initial drive signal a reset data start waveform, and the reset data start waveform follows the predetermined time after the image segment start waveform. 8. The display device as claimed in claim 5, wherein the reset data is image data of any single gray scale. 9. A method for driving a display panel, wherein the display panel includes M columns of scan lines, N rows of data lines, and M×N pixels, and each row of data lines includes a first sub-data line and a second sub-data line line, and the above-mentioned pixels are arranged in a matrix, and the pixel at the i-th column and the j-th row is represented as P(i, j), and 1≤i≤M, and 1≤j≤N, and the pixel of the j-th row A sub-data line and a scanning line in the i-th column are coupled to the pixel P(i, j), and a second sub-data line in the j-th row and the scanning line in the i+1th column are coupled to the pixel P(i+1, j) , wherein N, M, i, j are all positive integers, the driving method includes: providing an input image signal; dividing the input image signal into a plurality of image segments, wherein each image segment has display data of pixels coupled to two adjacent scan lines; Divide every K image segments into a group, where K is a positive integer; inserting a reset data into each group of image segments; According to a first initial waveform, the scanning lines corresponding to a first group are driven K times, and the scanning lines of two adjacent columns are driven each time. When the scanning lines of two adjacent columns are driven, providing the display data of the pixels coupled to the i-th column scan line among the driven scan lines to the first sub-data line, and displaying the display data of the pixels coupled to the i+1-th column scan line among the driven scan lines data is provided to the second sub-data line; and After a predetermined time of the first initial waveform, simultaneously drive the scanning lines corresponding to the first group according to a second initial waveform, and output the reset data to the first sub-data lines and the second sub-data line. 10. The driving method of the display panel as claimed in claim 9, wherein the first initial waveform is an initial waveform of an image segment of a grid initial driving signal, and the second initial waveform is the initial waveform of the grid. A reset data start waveform of the driving signal is started, and the reset data start waveform is continuous after the preset time of the image segment start waveform. 11. The driving method of the display panel as claimed in claim 9, wherein the reset data is image data of any single gray scale.

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