WO2019052448A1

WO2019052448A1 - Driving apparatus and driving method for display panel, and display apparatus

Info

Publication number: WO2019052448A1
Application number: PCT/CN2018/105087
Authority: WO
Inventors: 何怀亮
Original assignee: 惠科股份有限公司
Priority date: 2017-09-12
Filing date: 2018-09-11
Publication date: 2019-03-21
Also published as: CN107564483A

Abstract

Disclosed are a driving apparatus and a driving method for a display panel, and a display device. The driving apparatus comprises: a plurality of source driver units, comprising a plurality of first source driver units and a plurality of second source driver units correspondingly arranged at two sides of a display area, wherein source lines connected to the first source driver units are connected to a plurality of sub-pixels located in a corresponding column and in an odd-numbered row, and source lines connected to the second source driver units are connected to a plurality of sub-pixels located in a corresponding column and in an even-numbered row; and a plurality of gate driver units arranged at one end of the display area, wherein gate lines connected to the gate driver units are connected to a plurality of sub-pixels in a corresponding row.

Description

Driving device, driving method and display device of display panel

Technical field

The present application relates to the field of liquid crystal panel display, and in particular to a driving device, a display device and a driving method for a display panel.

Background technique

With the development of liquid crystal display technology, liquid crystal display systems have been developed in the direction of large size and high resolution.

At present, large-sized liquid crystal display devices basically use TFT (ThinFilm Transistor) liquid crystal display systems; TFT liquid crystal display devices work on the principle that each liquid crystal pixel is driven by a thin film transistor integrated behind the pixel, thereby It can achieve high speed, high brightness and high contrast display screen information. It is one of the best liquid crystal color display devices at present. Each pixel of TFT liquid crystal display is controlled by TFT thin film transistor integrated on itself. Active pixel point. Therefore, not only can the speed be greatly improved, but the contrast and brightness are also greatly improved, and the resolution is also at a very high level. Therefore, the TFT liquid crystal display system has a faster display speed and a more layered picture than other types of liquid crystal display systems such as a TFD (Thin Film Diode) liquid crystal display system and an STN (Super Twisted Nematic) liquid crystal display system. The TFT liquid crystal display device displays better image quality and is widely used in large-sized liquid crystal display devices.

At present, 4K display panels have become mainstream. At present, various manufacturers actively develop high-resolution 8K or even 8K display panels. Currently, 8K display panels are based on TFT liquid crystal display systems, and TFT LCD panels are the main two types of driver chips. It is: gate driver (source driver) and source driver (source driver); source driver (source driver), its driver chip is connected to the source of the TFT, responsible for providing the display panel with the data to be displayed, will be located The liquid crystal capacitor (Clc, capacitor on liquid crystal) and the storage capacitor (Cs, storage capacitor) on the liquid crystal panel are charged to the required voltage. The gate driver is responsible for providing the TFT gate turn-on level of the panel, and sequentially turning on the TFT thin film transistors on the liquid crystal panel by sending out the waveform so that the S/D (source driver) will be located on the liquid crystal panel. The liquid crystal capacitor Clc and the storage capacitor Cs are charged to the required voltage, that is, a whole line of display points are charged to display different gray levels. In the process of making the 8K display panel, in order to reduce the loading of the source driver, the source line source line (also called the data line/data line) of the panel is separated from the middle of the display area, and the upper part is provided by the source driver of the upper side. The charging voltage, the lower half is supplied by the source driver below. Such a system may cause a horizontal line at the position of the cutting line due to the inconsistent relationship between the gamma voltage and the voltage attenuation on the source line. The industry is called uneven cutting (also called mura).

Summary of the invention

The main purpose of the present application is to provide a driving device, a driving method, and a display device for a display panel, which aim to solve the problem that the large-size panel may cause mura.

In order to achieve the above object, the present application provides a driving device for a display panel, the display panel including a display area and a non-display area, wherein the display area includes a plurality of sub-pixels arranged in a matrix; In the direction of the two sides of the display area, the direction of the row of the matrix is the direction of one end of the display area;

The driving device includes:

a plurality of source driving units including a plurality of first source driving units and a plurality of second source driving units respectively disposed on both sides of the display area, wherein the first source driving unit is connected The source lines are connected to the plurality of sub-pixels on the corresponding column and located in the odd-numbered rows, and the source lines connected to the second source driving unit are connected to the plurality of sub-pixels on the corresponding column and located in the even-numbered rows;

A plurality of gate driving units are disposed at one end of the display region, wherein the gate lines connected to the gate driving unit are connected to the plurality of sub-pixels on the corresponding row.

In one embodiment, each gate line connects and controls two adjacent rows of sub-pixels.

In an embodiment, each gate driving unit is connected to two gate lines.

In an embodiment, the adjacent sub-pixels of the same column have opposite polarity settings.

In an embodiment, adjacent sub-pixel dot polarities of the same row are arranged oppositely.

In addition, the present application further provides a display device, where the display device includes:

A display panel, and a driving device of the display panel as described above.

In addition, the present application further provides a driving method of a display panel, wherein a plurality of first source driving units and a plurality of second source driving units are disposed on two sides of the display panel, and one end of the display panel is provided a gate driving unit, the driving method includes:

The gate driving unit simultaneously turns on a switch unit corresponding to the i-th row sub-pixel and a switch unit corresponding to the i+1-th row sub-pixel, so that the plurality of first source driving units are on the ith row The pixels are charged, and the plurality of second source driving units charge the i+1th row of sub-pixels, the i being an odd number.

The gate driving unit simultaneously turns off the switching unit corresponding to the i-th row sub-pixel and the switching unit corresponding to the i+1-th row sub-pixel to pre-turn on the i+2th row sub-pixel and the i+3 A switching unit corresponding to a sub-pixel.

A driving device for a display panel according to the present application, the driving device includes a plurality of source driving units, and includes a plurality of first source driving units and a plurality of second source driving units correspondingly disposed on two sides of the display area, The source line connected to the first source driving unit is connected to a plurality of sub-pixels on the corresponding column and located in the odd-numbered rows, and the source line connected to the second source driving unit is connected to the corresponding column and located in the even number a plurality of sub-pixels of the row; and a plurality of gate driving units disposed at one end of the display region, wherein the gate lines connected to the gate driving unit are connected to the plurality of sub-pixels on the corresponding row. The driving device can avoid the phenomenon that the gamma voltage of the display panel and the voltage on the source line are inconsistent in the production process of the large-size display panel, thereby solving the problem of cutting mura occurring in the process of generating the large-size display panel.

DRAWINGS

1 is a schematic view of a driving device of an exemplary large-size display panel;

2 is a schematic diagram of an embodiment of a driving device for a display panel according to the present application;

3 is a schematic view of still another embodiment of a driving device for a display panel according to the present application;

4 is a schematic diagram of still another embodiment of a driving device for a display panel according to the present application;

FIG. 5 is a schematic diagram showing a manner of changing various polarities of an exemplary display panel; FIG.

FIG. 6 is a schematic flow chart of an embodiment of a driving method based on a thin film transistor display panel of the present application.

The implementation, functional features and advantages of the present application will be further described with reference to the accompanying drawings.

Detailed ways

It is understood that the specific embodiments described herein are merely illustrative of the application and are not intended to be limiting.

The main two types of driving chips of the liquid crystal display panel are gate driver and source driver; as shown in FIG. 1, in FIG. 1, 100 represents a source driver, and each source driver 100 includes a multi-output source driving unit (ie, a plurality of first source driving units), and the driving chip is connected to a source of a TFT (Thin Film Transistor thin film transistor), and is responsible for providing the display panel with data to be displayed, and The liquid crystal capacitor (Clc, capacitor on liquid crystal) and the storage capacitor (Cs, storage capacitor) located on the liquid crystal panel are charged to a required voltage. FIG. 1 shows a conventional single-gate thin film transistor display panel driving device, and the driving principle thereof is as follows:

Each TFT on the display panel and the capacitor connected in parallel with Clc and Cs represent a display point (ie, a sub-pixel); and a basic pixel unit pixel requires three such displayed points (sub-pixels), respectively representing RGB three primary colors. As shown in Fig. 1, the TFT liquid crystal 8K display panel with a resolution of 7680*4320 requires a total of 7680*4320*3 such points (sub-pixels).

200 in FIG. 1 represents a gate driver, and each gate driver 200 includes a multi-output gate driving unit (ie, a plurality of gate driving units), and each gate driving unit is responsible for providing a TFT gate opening of the panel. Flat, the TFT thin film transistors on the liquid crystal panel are sequentially turned on by sending out waveforms, so that the source driving charges the liquid crystal capacitor Clc and the storage capacitor Cs on the liquid crystal panel to a required voltage, that is, an entire line of display Point to charge to display different gray levels;

When the display line (sub-pixel) of the previous row is charged, the gate driving unit turns off the voltage; then the next row of the gate driving unit charges and discharges the display point (sub-pixel) of the next row, so as to continue Filling up the display point of the last row of the display panel, and then turning back to start charging from the first row from the beginning, and thus cycling, the imaging of the single-gate thin film transistor display panel can be completed.

As shown in Figure 1, for a 7680*4320 resolution (ie 8K) TFT liquid crystal display, there will be a total of 4320 rows of gate traces (ie gate line), source traces (ie source lines) Source line) A total of 7680*3=23040 is required.

Wherein, the 8k display panel has 7680*3=23040 columns of sub-pixels in the horizontal direction, and can be driven by 60 384-output source drivers 100, that is, each source driver 100 has 384 source driving units (also It can be called with 384 source-driven switches or 384 source-driven output channels; there are 4320 rows of sub-pixels in the vertical direction, which can be set by 16 270-output gate drivers 200 The drive, ie each gate driver 200, has 270 gate drive units (which may also be referred to as having 270 gate drive switches or referred to as having 270 gate drive output channels).

At present, various manufacturers actively develop high-resolution display panels of 8K or even more. At present, 8K display panels are based on the driving architecture of TFT liquid crystal display systems; referring to Figure 1, the middle is an 8K display panel, in order to reduce the source drive (source) Driver), the source line source line (also called data line / data line) of the panel is separated from the middle control (indicated by the dotted line M in Figure 1), and the upper part is driven by the source driver on the upper side (source driver) The charging voltage is supplied, and the lower half is supplied with a charging voltage by a source driver below. Such a system may cause a horizontal line at the position of the cutting line due to the inconsistent relationship between the gamma voltage and the voltage attenuation on the source line. The industry is called uneven cutting (also called cutting mura).

The technical solutions in the embodiments of the present application are clearly and completely described in the following with reference to the drawings in the embodiments of the present application. It is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art without creative efforts are within the scope of the present application. Variations in the shapes of the illustrations are contemplated as a result of manufacturing techniques and/or tolerances. Therefore, the embodiments of the present application should not be construed as being limited to the specific shapes of the regions illustrated herein. Thus, the regions illustrated in the figures are illustrative in nature, and their shapes are not intended to illustrate the precise shapes of the regions and are not intended to limit the scope of the embodiments.

In the description of the present application, it is to be understood that the terms "vertical", "transverse", "upper", "lower", "left", "right", "horizontal", "two sides", "bottom" The orientation or positional relationship of the "middle", "inside", and the like is based on the orientation or positional relationship shown in the drawings, and is merely for the convenience of describing the present application and the simplified description, and does not indicate or imply that the device or component referred to must be It has a particular orientation, is constructed and operated in a particular orientation, and thus is not to be construed as limiting.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "multiple" or "plurality" means two (two) or two (two) or more unless otherwise stated.

In addition, the term "comprises" and its variations are intended to cover a non-exclusive inclusion.

The present application proposes a driving device for a display panel.

FIG. 2 is a schematic structural diagram of a first embodiment of a display panel driving apparatus according to the present application.

In this embodiment, the display panel includes a display area and a non-display area, wherein the display area includes a plurality of sub-pixels arranged in a matrix; the direction of the columns of the matrix is the direction of the two sides of the display area, The direction of the row of the matrix is the direction of one end of the display area;

The driving device includes:

It can be understood that, referring to FIG. 2, the display area of the display panel has a plurality of sub-pixels, and one basic display pixel unit pixel is composed of three sub-pixels (ie, three points are displayed as such), respectively representing three primary colors of RGB; The shape of the display panel is a rectangle; the display area is provided with a plurality of source lines (horizontal direction) arranged side by side, the sub-pixels on the display area are arranged in an array, and the sub-pixels are further divided into odd numbers. Row sub-pixels and even row sub-pixels; the upper and lower sides of the display panel are opposite to each other, and the left and right ends are also opposite to each other;

The driving device of the display panel has a plurality of source driving units, and includes a plurality of first source driving units (S/D-1) and a plurality of second sources correspondingly disposed on two sides of the display panel display area a driving unit (S/D-2), wherein a source line connected to the first source driving unit is connected to a plurality of sub-pixels on a corresponding column and located in an odd row, and is connected to the second source driving unit The source line is connected to a plurality of sub-pixels on the corresponding column and located in the even line;

It should be noted that, in this embodiment, the driving device of the display panel is described based on the driving structure of the single-gate thin film transistor display panel. Referring to FIG. 2, the upper side of the display panel is taken as the first On the side, the lower side of the display panel is referred to as a second side; (of course, the lower side may be the first side and the upper side may be the second side); in FIG. 2, the source line n is an odd-numbered source line. The source line n+1 is the source line of the even column.

In a specific implementation, the upper side (first side) is provided with a plurality of first source driving S/D-1, and each source line n extends from each source driving output channel on the first side at the first In the vertical direction, the first vertical direction can be understood as the direction of the S/D-1 from the upper side (first side) to the lower side (second side); referring to FIG. 2, each source line n is connected And controlling a column of odd row sub-pixels in the first vertical direction.

The lower side (second side) is provided with a plurality of second source drives SD-2, and each source line n+1 extends from the source driving output channels on the lower side (second side) to the second vertical In the direction of the direction, the second vertical direction can be understood as the direction of the S/D-2 from the lower side (the second side) to the upper side (the first side); referring to FIG. 2, each source line n+1 Connecting and controlling an array of even row sub-pixels in the second vertical direction.

Referring to FIG. 2, the source line n and the source line n+1 are two adjacent source lines in the display area, and the source line n is connected to the sub-pixel and the source. The sub-pixels connected by line n+1 are on the same column straight line (n is a positive integer).

It should be noted that, in the embodiment, the source line n in FIG. 2 is an odd column. Of other embodiments, the source line n of the driving device of the present application may also be an even column; corresponding to the source line n in the map 2 +1 is an even column. Of course, in other embodiments, the source line n+1 may also be an odd column.

The driving device of the display panel further includes a plurality of gate driving units G/D disposed at one end of the display region, wherein the gate lines connected to the gate driving are connected to the plurality of sub-pixels on the corresponding row.

It should be noted that, in this embodiment, each gate driving unit is disposed at the left end of the display panel.

It can be understood that, since each thin film transistor corresponds to a single sub-pixel, in actual production, a gate line connected to the gate driving is connected to a plurality of thin film transistors on a corresponding row, corresponding to the gate The gate line of the driving connection is connected to a plurality of sub-pixels on the corresponding row.

In this embodiment, one column of sub-pixels is controlled by the source lines respectively drawn from the source driving units (also referred to as source driving output channels) on the upper and lower sides, compared to the exemplary one source line control. For a single-gate thin film transistor display driving device of all sub-pixels, the source driving source driver of the driving device of the present application is halved, thereby minimizing the power consumption of the source driving source driver, thereby reducing the source driving. Source driver temperature. Moreover, the corresponding gate lines are turned on in a preset order, so that each of the source driving units S/D-1 on one side charges the sub-pixels of the odd rows, and the respective source driving units S/D on the other side are completed. -2 charges the sub-pixels of the even rows, so that the problem of inconsistent voltage attenuation between the gamma voltage and the source line does not occur, and the problem of cutting mura occurring in the generation process of the large-sized display panel can be solved.

3 is a schematic structural diagram of a second embodiment of a display panel driving apparatus according to the present application. Based on the embodiment shown in FIG. 2, a second embodiment of a display panel driving apparatus of the present application is proposed. FIG. The embodiment shown in 2 is an example.

In this embodiment, each gate line connects and controls two adjacent rows of sub-pixels; that is, two adjacent rows of sub-pixels are a group of sub-pixels, and each group of sub-pixels includes odd-row sub-pixels and even-row sub-pixels. Each gate line controls a set of sub-pixels.

It can be understood that the exemplary single-gate thin film transistor display driving architecture is that one gate line gate line controls only one row of sub-pixels, and the embodiment of the present application is that one gate line gate line simultaneously controls two rows of sub-pixels;

In a specific implementation, a plurality of gate driving units G/D (gate driver) are disposed on a left side of the display panel, and the display panel is provided with a plurality of rows of gate lines arranged side by side; adjacent two rows of sub-pixels As a group of sub-pixels, each set of sub-pixels includes odd-row sub-pixels and even-row sub-pixels, and each gate line connects and controls adjacent two rows of sub-pixels.

Referring to FIG. 3, it is assumed that each gate line is scanned in the order from top to bottom, and the first row of sub-pixels and the second row of sub-pixels are adjacent to a group of sub-pixels, and are all corresponding to the first row. Gate line (G1) control; since a plurality of first source driving units (S/D-1) and a plurality of second source driving units (S/D-2) are disposed on both sides of the display panel, The gate driving transmits a gate signal through the first row gate line (G1) to simultaneously open the thin film transistor corresponding to the first row subpixel and the thin film transistor corresponding to the second row subpixel, so that the upper side (the first side) Each of the source driving units S/D-1 charges the first row of sub-pixels, and the lower (second side) of each source driving unit S/D-2 charges the second row of sub-pixels, so that All sub-pixels (ie, display points) of the first row and the second row are charged to their respective required voltages; when the first row of sub-pixels and the second row of sub-pixels are charged, the first row of gate lines is turned off ( G1) connected thin film transistor; then gate drive transmits gate signal through the second row gate line (G2) to simultaneously open the corresponding thin film transistor of the third row of sub-pixels and the fourth row sub-image Corresponding thin film transistors such that each of the source driving units S/D-1 of the upper side (first side) charges the third row of sub-pixels, and the lower side (second side) of each source driving unit S/D -2 charges the 4th row of sub-pixels so that all pixel cells of the 3rd row and the 4th row are charged to their respective required voltages... pass each gate line according to the above driving method (gate Line) sequentially charging each group of sub-pixels until one of the last two rows of sub-pixels is charged for the last row of gate lines (Gn), and then all of the sub-pixels in the display panel are charged once.

Further, in this embodiment, referring to FIG. 3, each gate line connects and controls two adjacent rows of sub-pixels, and each gate driving unit G/D is connected with two gate lines; the first row The gate line (G1) and the second row of gate lines (G2) are two adjacent gate lines, and the gate line G1 and the gate line G2 are connected to the same gate drive (also referred to as gate drive) Output channel); similarly, the third row gate line (G3) and the fourth row gate line (G4) are two adjacent gate lines, and the gate line G3 and the gate line G4 are connected to the same gate Driving the output channel; and so on, that is, each gate driving unit is connected with two gate lines.

It can be understood that the exemplary single-gate thin film transistor display driving architecture is that one gate driving unit is connected to only one gate line gate line; and the embodiment of the present application is a gate driving unit connecting two gate lines. .

In this embodiment, the two connection sub-pixels are simultaneously controlled by one connection line gate line, and one gate drive unit G/D (gate driver) is connected to two gate lines gate line, which can make the gate drive The number of units G/D (gate driver) is halved, and half of the gate drive unit G/D (gate driver) is omitted.

4 is a schematic structural diagram of a third embodiment of a thin film transistor display panel driving device according to the embodiment of the present invention. Based on the embodiment shown in FIG. 2, a third embodiment of a thin film transistor display panel driving device of the present application is provided. 4 is exemplified by the embodiment based on FIG. 2.

In this embodiment, the adjacent sub-pixels of the same column have opposite polarities; that is, the source line n and the source line n+1 in FIG. 4 are respectively connected to sub-pixels having opposite signal polarities.

It can be understood that each thin film transistor on the display panel is combined with the liquid crystal capacitor Clc and the storage capacitor Cs. This combined connection represents one sub-pixel; since the liquid crystal capacitor Clc is polar, the sub-pixel is also polar. . Specifically, a polarity inversion signal may be provided to the source driving of the display panel to provide a polarity to the sub-pixels by setting a timing controller, which is not described herein.

It should be noted that, because liquid crystal molecules still have a characteristic, they cannot be fixed at a certain voltage all the time. Otherwise, even if the voltage is cancelled, the liquid crystal molecules can no longer respond to the electric field due to the destruction of the characteristics. The changes are rotated to form different gray levels. Therefore, at regular intervals, the voltage must be restored to the original state to avoid damage to the characteristics of the liquid crystal molecules. However, if the picture does not move, that is, how the picture is always displayed when the picture is displayed, the display voltage in the liquid crystal display is divided into two polarities, one is positive polarity and the other is negative polarity. When the voltage of the display electrode is higher than the voltage of the common electrode, it is called positive polarity; and when the voltage of the display electrode is lower than the voltage of the common electrode, it is called negative polarity. Whether it is positive polarity or negative polarity, there will be a set of gray scales of the same brightness; therefore, when the absolute value of the pressure difference between the upper and lower layers of glass is fixed, whether the voltage of the display electrode is high or the voltage of the common electrode is high, The gray scales shown are exactly the same. However, in both cases, the steering of the liquid crystal molecules is completely reversed, and the characteristic damage caused when the liquid crystal molecules are always fixed in one direction can be avoided. That is to say, when the display screen is still moving, we can still achieve the display without moving by the alternating polarity of positive and negative polarity, and the liquid crystal molecules are not destroyed as a result of the characteristics, so when you see Although the LCD screen is still, the voltage inside is constantly changing, and the liquid crystal molecules are constantly turning to this side, and the other time is turning in the opposite direction.

There are usually four ways to change the polarity of the display panel. Referring to Figure 5, frame inversion, column inversion, row inversion, and dot inversion. ;

These four conversion methods, they have a common point, are to change the polarity when the next time the screen data is replaced. In the update frequency of 60 Hz, that is, the polarity of the picture is changed every 16 ms. That is, for the same point, its polarity is constantly changing. Whether adjacent points have the same polarity can be determined according to different polarity switching methods. The first is Frame inversion, which has the same polarity for all adjacent points of the entire picture. Row inversion and column inversion each have the same polarity on adjacent rows and columns. In addition, in dot inversion, it is the up, down, left, and right points of each point adjacent to itself, which is different polarity.

It can be understood that the source line n and the source line n+1 in FIG. 4 are two adjacent source lines in the display area, the sub-pixels connected to the source line n and the source The sub-pixels connected to the pole line n+1 are located on the same column straight line. When the source line n and the source line n+1 are respectively connected to the sub-pixels with opposite signal polarities, row inversion may occur. And dot inversion (Dot inversion) two polarity transformations;

Further, in this embodiment, adjacent sub-pixel polarities of the same column are oppositely disposed, and adjacent sub-pixel polarities of the same row are oppositely disposed, that is, referring to FIG. 4, the source line is divided. The odd-numbered column source line n and the even-numbered column source line n+1; the adjacent odd-numbered column source lines n are respectively connected to the sub-pixels having opposite signal polarities; the adjacent even-numbered column source lines n+1 are respectively connected to the signals Subpixels of opposite polarity.

It can be understood that the first column source line (odd column) in FIG. 4 is connected to the positive sub-pixel, and the second column source line (even column) is connected to the negative sub-pixel, the first column. The sub-pixels connected to the source line are on the same column line as the sub-pixels connected to the second column source line; the third column source line (odd column) is connected to the negative sub-pixel, and the fourth column source line ( The even columns are connected to the positive sub-pixels, the sub-pixels connected to the third column source line are in the same column line as the sub-pixels connected to the fourth column source line; the fifth column source line (odd column) Connected to the positive sub-pixels, the sixth column source line (even column) is connected to the negative sub-pixel, the fifth column source line connected sub-pixel is the same as the sixth column source line connected sub-pixel On the column line, and so on, the effect of the polarity inversion method of the dot inversion can be achieved by the column inversion driving S/D using the column inversion driving method with opposite polarity. The polarity conversion method of Dot inversion is more effective than the polarity conversion method of other display panels. Much better, because the polarity of the dot inversion method has almost no flicker and is less prone to crosstalk.

The so-called Flicker phenomenon is that when you look at the screen of the LCD monitor, you will feel the flickering of the screen. It does not deliberately make the display appear bright and light to make a flashing visual effect, but because the gray level of the displayed picture will change slightly every time the picture is updated, and the eye feels flickering. As for the phenomenon of crosstalk, it refers to the information between the adjacent points, the information to be displayed will affect the other party, so that the displayed picture will have an incorrect condition; although crosstalk (Crosstalk) There are many kinds of phenomena, and as long as the polarity of adjacent points is different, this phenomenon can be reduced.

Based on the above driving device, an embodiment of a driving method based on a thin film transistor display panel of the present application has been proposed.

Referring to FIG. 6, FIG. 6 is a schematic flow chart of a first embodiment of a driving method based on a thin film transistor display panel according to the present application.

In this embodiment, a plurality of first source driving units and a plurality of second source driving units are disposed on two sides of the display panel, and one end of the display panel is provided with a plurality of gate driving units, and the driving Methods include:

S01: the gate driving unit simultaneously turns on a switch unit corresponding to the i-th row sub-pixel and a switch unit corresponding to the i+1-th row sub-pixel, so that the plurality of first source driving units are paired with the i Row sub-pixels are charged, and the plurality of second source driving units charge the i+1th row of sub-pixels, the i being an odd number;

S02: the gate driving unit simultaneously turns off the switching unit corresponding to the i-th row sub-pixel and the switching unit corresponding to the i+1-th row sub-pixel to pre-turn on the i+2th row sub-pixel and the i-th +3 row of sub-pixel corresponding switch unit.

It can be understood that, as is well known, a row of gate lines is connected to a source terminal of each thin film transistor corresponding to a row (in this embodiment, a row of gate lines is connected to adjacent two rows of thin film transistors), and the gate driving unit passes through the gate. The polar line direction sends a gate signal to the corresponding thin film transistor to control the opening and closing of the thin film transistor. Therefore, in the present embodiment, the switching unit can be understood as a thin film transistor.

In a specific implementation, as shown in FIG. 3, in this embodiment, each gate line is scanned in the order from top to bottom, and the first row of sub-pixels and the second row of sub-pixels are adjacent to a group of sub-pixels. And are controlled by the corresponding first row of gate lines G1; since the display panel is provided with a plurality of first source driving units S/D-1 and a plurality of second source driving units S/D- 2. The gate driving unit transmits a gate signal through the gate line G1 to simultaneously open the thin film transistor corresponding to the first row of sub-pixels and the thin film transistor corresponding to the second row of sub-pixels, so that the upper side (first side) The source driving unit S/D-1 charges the first row of sub-pixels, and the lower (second side) of each source driving unit S/D-2 charges the second row of sub-pixels, so that the first row And all the display points of the second row are charged to the respective required voltages; when the first row of sub-pixels and the second row of sub-pixels are charged, the thin film transistor connected to the first row of gate lines (G1) is turned off; The pole driving unit transmits a gate signal through the second row gate line (G2) to simultaneously open the corresponding thin film transistor of the third row of sub-pixels and the fourth row a thin film transistor corresponding to a pixel such that each of the source driving units S/D-1 of the upper side (first side) charges the third row of sub-pixels, and the lower side (second side) of each source driving unit S/ D-2 charges the fourth row of sub-pixels so that all display points of the third row and the fourth row are charged to their respective required voltages... pass each gate line according to the above driving method (gate line Each group of sub-pixels is sequentially charged until the last two rows of sub-pixels are charged for the last row of gate lines (Gn), and then all sub-pixels in the display panel are charged once.

In the embodiment, the above-mentioned driving method can solve the problem that the cutting mura is generated in the current large-size panel production process.

Furthermore, the present application also proposes a display device comprising: a display panel, and a driving device of the display panel according to any of the above embodiments. The display panel may be a liquid crystal display panel, and the display device may be a display device such as a computer display screen, a television display screen, and a tablet computer display screen.

The above content is a further detailed description of the present application in conjunction with the specific alternative embodiments, and it is not considered that the specific implementation of the present application is limited to the description. It will be apparent to those skilled in the art that the present invention can be made in the form of the present invention without departing from the scope of the present invention.

Claims

A driving device for a display panel, wherein the display panel includes a display area and a non-display area, wherein the display area includes a plurality of sub-pixels arranged in a matrix; a direction of the column of the matrix is the display area The direction of the two sides, the direction of the row of the matrix is the direction of one end of the display area;

The driving device includes:

a plurality of source driving units including a plurality of first source driving units and a plurality of second source driving units respectively disposed on both sides of the display area, wherein the first source driving unit is connected The source lines are connected to the plurality of sub-pixels on the corresponding column and located in the odd-numbered rows, and the source lines connected to the second source driving unit are connected to the plurality of sub-pixels on the corresponding column and located in the even-numbered rows;

A plurality of gate driving units are disposed at one end of the display region, wherein the gate lines connected to the gate driving unit are connected to the plurality of sub-pixels on the corresponding row.
The driving apparatus according to claim 1, wherein each of the gate lines connects and controls adjacent two rows of sub-pixels.
The driving apparatus according to claim 2, wherein adjacent sub-pixel dot polarities of the same column are oppositely disposed.
The driving apparatus according to claim 2, wherein adjacent sub-pixel dot polarities of the same row are oppositely disposed.
The driving apparatus according to claim 2, wherein each of the gate driving units is connected to two gate lines.
The driving apparatus according to claim 5, wherein adjacent sub-pixel dot polarities of the same column are oppositely disposed.
The driving apparatus according to claim 6, wherein adjacent sub-pixel dot polarities of the same row are oppositely disposed.
The driving apparatus according to claim 1, wherein adjacent sub-pixel dot polarities of the same column are oppositely disposed.
The driving apparatus according to claim 1, wherein adjacent sub-pixel dot polarities of the same row are oppositely disposed.
A display device comprising:

a display panel and a driving device thereof, wherein the display panel includes a display area and a non-display area, wherein the display area includes a plurality of sub-pixels arranged in a matrix; and the direction of the column of the matrix is two of the display areas In the direction of the side, the direction of the row of the matrix is the direction of one end of the display area;

The driving device includes:

a plurality of source driving units including a plurality of first source driving units and a plurality of second source driving units respectively disposed on both sides of the display area, wherein the first source driving unit is connected The source lines are connected to the plurality of sub-pixels on the corresponding column and located in the odd-numbered rows, and the source lines connected to the second source driving unit are connected to the plurality of sub-pixels on the corresponding column and located in the even-numbered rows;

A plurality of gate driving units are disposed at one end of the display region, wherein the gate lines connected to the gate driving unit are connected to the plurality of sub-pixels on the corresponding row.
The display device of claim 10, wherein each of the gate lines connects and controls adjacent two rows of sub-pixels.
The display device of claim 11, wherein adjacent sub-pixel dot polarities of the same column are oppositely disposed.
The display device of claim 11, wherein adjacent sub-pixel dot polarities of the same row are oppositely disposed.
The display device of claim 11, wherein each of the gate driving units is connected to two gate lines.
The display device of claim 14, wherein adjacent sub-pixel dot polarities of the same column are oppositely disposed.
The display device according to claim 15, wherein adjacent sub-pixel dot polarities of the same row are oppositely arranged.
The display device of claim 10, wherein adjacent sub-pixel dot polarities of the same column are arranged oppositely.
The display device according to claim 10, wherein adjacent sub-pixel dot polarities of the same row are oppositely arranged.
A driving method of a display panel, wherein a plurality of first source driving units and a plurality of second source driving units are disposed on two sides of the display panel, and one end of the display panel is provided with a plurality of gate driving Unit, the driving method includes:

The gate driving unit simultaneously turns on a switch unit corresponding to the i-th row sub-pixel and a switch unit corresponding to the i+1-th row sub-pixel, so that the plurality of first source driving units are on the ith row The pixels are charged, and the plurality of second source driving units charge the i+1th row of sub-pixels, the i being an odd number.
The driving method according to claim 19, wherein said plurality of first source driving units charge said i-th row of sub-pixels, and said plurality of second source driving units perform said i-th row of sub-pixels After charging, the driving method further includes:

The gate driving unit simultaneously turns off the switching unit corresponding to the i-th row sub-pixel and the switching unit corresponding to the i+1-th row sub-pixel to pre-turn on the i+2th row sub-pixel and the i+3 A switching unit corresponding to a sub-pixel.