CN108305589B

CN108305589B - Driving module and driving method of display device

Info

Publication number: CN108305589B
Application number: CN201711458764.5A
Authority: CN
Inventors: 詹凯翔; 卢泓谕
Original assignee: Sitronix Technology Corp
Current assignee: Sitronix Technology Corp
Priority date: 2016-12-28
Filing date: 2017-12-28
Publication date: 2022-12-30
Anticipated expiration: 2037-12-28
Also published as: CN108305589A; TWI656522B; TW201826249A

Abstract

The invention discloses a driving module for a display device, which comprises a plurality of first driving units, a plurality of second driving units and a plurality of driving units, wherein the first driving units are used for generating a plurality of data driving signals to a plurality of data lines of the display device according to a plurality of first control signals; the plurality of second driving units are used for generating a plurality of grid driving signals to a plurality of scanning lines of the display device according to a plurality of second control signals; and a control unit for determining the driving capability of the data driving signals according to the data line loads corresponding to the data lines to generate the first control signals, or determining the driving capability of the gate driving signals according to the scan line loads corresponding to the scan lines to generate the second control signals.

Description

Driving module and driving method of display device

Technical Field

The present invention relates to a driving module for a display device and a driving method thereof, and more particularly, to a driving module for adjusting driving capability of a driving signal according to a load of a display device and a driving method thereof.

Background

Liquid Crystal Displays (LCDs) have the advantages of being light and thin in appearance, low in radiation, small in size, low in energy consumption and the like, and are widely applied to information products such as notebook computers or flat televisions. Therefore, the LCD has gradually replaced the conventional Cathode Ray Tube Display (Cathode Ray Tube Display) to become the mainstream of the market, and the Active Matrix thin film transistor LCD (Active Matrix TFT LCD) is the most popular. The driving system of the active matrix tft-lcd mainly comprises a Timing Controller (Timing Controller), a Source Driver (Source Driver) and a Gate Driver (Gate Driver). The source driver and the gate driver respectively control Data lines (Data lines) and Scan lines (Scan lines) which intersect with each other on the panel to form a Cell matrix, and each Cell (Cell) includes liquid crystal molecules and transistors. The display principle of the liquid crystal display is that a grid driver transmits scanning signals to a grid of a transistor to enable the transistor to be conducted, and simultaneously, a source driver converts data transmitted by a time schedule controller into output voltage and transmits the output voltage to a source electrode of the transistor, at the moment, the voltage at one end of liquid crystal is equal to the voltage of a drain electrode of the transistor, the inclination angle of liquid crystal molecules is changed according to the voltage of the drain electrode, and then the light transmittance is changed to achieve the purpose of displaying different colors.

In general, the gate driver or the source driver in the lcd can drive the same amount of each load to drive the transistors or liquid crystal molecules of the scan line or data line. However, as various shapes of panel devices are gradually applied to different information products, the loads at various positions on the same panel may not be completely the same, thereby affecting the operation of the driving system. Although the patent publications US9319036 or US20050169075 disclose methods for adjusting the driving capability of the gate driver or the source driver, the methods cannot solve the problem of load difference caused by different positions on the panel. Therefore, how to reduce the influence of the load variation of the panel in the liquid crystal display becomes an urgent issue to be discussed in the art.

Disclosure of Invention

In order to solve the above-mentioned problems, the present invention provides a driving module and a driving method thereof for adjusting the driving capability of a driving signal according to the load of a display device.

The invention discloses a driving module for a display device, which comprises a plurality of first driving units, a plurality of second driving units and a plurality of driving units, wherein the plurality of first driving units generate a plurality of data driving signals to a plurality of data lines of the display device according to a plurality of first control signals; the plurality of second driving units are used for generating a plurality of grid driving signals to a plurality of scanning lines of the display device according to a plurality of second control signals; and a control unit for determining the driving capability of the data driving signals according to the data line loads corresponding to the data lines to generate the first control signals, or determining the driving capability of the gate driving signals according to the scan line loads corresponding to the scan lines to generate the second control signals.

The invention also discloses a driving method for a driving module in the display device. The driving method comprises determining a plurality of data line loads corresponding to the plurality of data lines or a plurality of scanning line loads corresponding to the plurality of scanning lines; determining driving capacities of a plurality of data driving signals and a plurality of gate driving signals according to the plurality of data line loads and the plurality of scanning line loads; and generating a plurality of first control signals and a plurality of second control signals according to the driving capacities of the plurality of data driving signals and the plurality of gate driving signals.

Drawings

Fig. 1 is a schematic diagram of a display device according to an embodiment of the invention.

Fig. 2 to 4, 6 and 7 are schematic views of another display device according to an embodiment of the invention.

FIG. 5 is a schematic diagram of ramp times for different scan line loads in accordance with an embodiment of the present invention.

FIG. 8 is a flowchart illustrating a driving method according to an embodiment of the invention.

Wherein the reference numerals are as follows:

10. 20, 30, 40, 60, 70 display device

100. Panel board

102. Drive module

80. Driving method

802. 804, 806 steps

CON control unit

CON _ S, CON _ S1 CON _ Sm first control signal

CON _ G, CON _ G1 CON _ Gn second control signal

DRI _ S first driving circuit

DRI _ G second drive circuit

DRI _ S1-DRI _ Sm, DRI _ SG 1-drive unit

DRI_Gn

S1-Sm data drive signals

G1-Gn gate drive signals

DL _ 1-DL _ m data line

SL _1 to SL _ n scanning lines

PIX _1_1 PIX _ m _ n pixel

DLD _ 1-DLD _ m data line load

SLD _ 1-SLD _ n scanning line load

OC and OC _ S output circuit

OP amplifier

M transistor

IBIAS current bias signal source

t time to bit

Detailed Description

Referring to fig. 1, fig. 1 is a schematic diagram of a display device 10 according to an embodiment of the invention. The display device 10 may be an electronic product having a display panel, such as a smart phone, a tablet computer, a notebook computer, or a wearable device, and the detailed composition or structure thereof may vary according to different applications. For simplicity, fig. 1 only illustrates a panel 100 and a driving module 102 of the display device 10, and the rest of the components such as the housing, the connection interface, and the like which are not directly related to the concept of the present invention are omitted. The panel 100 includes scan lines SL1 to SLn and data lines DL1 to DLm. Each of the junctions between the scan lines SL1 to SLn and the data lines DL1 to DLm is coupled to the pixels PIX _1_1 to PIX _ m _ n, respectively. The operation of the panel 100 is well known to those skilled in the art and will not be described herein. The driving module 102 includes a control unit CON, a first driving circuit DRI _ S and a second driving circuit DRI _ G. The control unit CON is used for generating a first control signal CON _ S and a second control signal CON _ G. The first driving circuit DRI _ S is used for generating the data driving signals S1 to Sm according to the first control signal CON _ S to drive the data lines DL _1 to DL _ m. The second driving circuit DRI _ G is used for generating gate driving signals G1 to Gn according to the second control signal CON _ G to drive the scan lines SL1 to SLn. Since the load of each pixel on each panel may not be completely the same due to the panel shape or process variation, the load of each scan line SL1 to SLn and each data line DL _1 to DL _ m is also not completely the same. For example, when a panel has a circular, oval or irregular shape, the loads of the pixels PIX _1_1 to PIX _1_m in the first column (column) and the loads of the pixels PIX _2_1 to PIX _2_m in the 2 nd column may be different for the first driving circuit DRI _ S. Therefore, in order to avoid the abnormal operation of the panel 100 caused by the different load sizes of the pixels on the panel, the control unit CON determines the driving capability of the first driving circuit DRI _ S for each of the data lines DL _1 to DL _ m according to the load corresponding to each of the data lines DL _1 to DL _ m, and accordingly generates the first control signal CON _ S; meanwhile, the control unit CON may also determine the driving capability of the second driving circuit DRI _ G for each of the scan lines SL1 to SLn according to the load corresponding to each of the scan lines SL1 to SLn, and accordingly generate the second control signal CON _ G. In this way, the control unit CON may adjust the driving capability to be suitable for various shapes of display devices.

In detail, referring to fig. 2, fig. 2 is a schematic diagram of a display device 20 according to an embodiment of the invention. For simplicity, fig. 2 only illustrates the data line loads DLD _1 to DLD _ m of the control unit CON, the first driving circuit DRI _ S, and the plurality of driving units DRI _ S1 to DRI _ Sm corresponding to the first driving circuit DRI _ S, and the rest of the second driving circuit DRI _ G, the data lines DL1 to DLm, the scan lines SL1 to SLn, and the pixels PIX _1_1 to PIX _ m _ n are not shown in the figure. In this embodiment, the control unit CON determines the driving capability of the data driving signals S1 to Sm according to the data line loads DLD _1 to DLD _ m corresponding to the data lines DL1 to DLm to generate the first control signals CON _ S1 to CON _ Sm, wherein the first control signals CON _ S1 to CON _ Sm can be implemented by a digital code, a voltage signal or a current signal. That is, for the data line loads DLD _1 to DLD _ m having different loads, the control unit CON may adjust the driving capability of the driving units DRI _ S1 to DRI _ Sm by the first control signals CON _ S1 to CON _ Sm, respectively. Specifically, the loads of the pixels on the data lines DL _1 to DL _ m are different, and thus the data line loads DLD _1 to DLD _ m are also different. For example, when the loads on the pixels PIX _ 1_1-PIX _1_n are low (e.g., close to the edge region of the circular panel), the data line load DLD _1 is low, and the control unit CON adjusts the first control signal CON _ S1 accordingly, so that the driving unit DRI _ S1 generates the data driving signal S1 with low driving capability; or, when the loads on the pixels PIX _ 2_1-PIX _2_n are high (e.g. close to the central region of the circular panel), the data line load DLD _2 is high, and the control unit CON adjusts the first control signal CON _ S2 accordingly to generate the data driving signal S2 with high driving capability, and so on. Therefore, the control unit CON can control each of the driving units DRI _ S1 to DRI _ Sm to generate the corresponding data driving signals S1 to Sm so as to individually adjust the driving capability of each of the driving units DRI _ S1 to DRI _ Sm. It should be noted that the control unit CON not only can individually adjust the driving capability of the corresponding data lines DL _1 to DL _ m according to the data line loads DLD _1 to DLD _ m, but also can group the data lines according to the loads of the data line loads DLD _1 to DLD _ m, and then adjust the driving capability of the corresponding data lines DL _1 to DL _ m by taking the group as a unit, but not limited thereto.

In addition, in addition to actually measuring the values of the data line loads DLD _1 to DLD _ m, the control unit CON may also determine the first control signals CON _ S1 to CON _ Sm according to a stability or a ramp time of the data line loads DLD _1 to DLD _ m after receiving the data driving signals S1 to Sm, and evaluate whether the driving capabilities of the data driving signals S1 to Sm for the data line loads DLD _1 to DLD _ m are appropriate, so as to determine the first control signals CON _ S1 to CON _ Sm, thereby generating the appropriate data driving signals S1 to Sm.

In another embodiment, please refer to fig. 3, and fig. 3 is a schematic diagram of a display device 30 according to an embodiment of the invention. For simplicity, fig. 3 only illustrates the control unit CON, the plurality of driving units DRI _ S1 to DRI _ Sm of the first driving circuit DRI _ S, and the data line loads DLD _1 to DLD _ m corresponding to the driving units DRI _ S1 to DRI _ Sm, and the rest of the second driving circuit DRI _ G, the data lines DL1 to DLm, the scan lines SL1 to SLn, and the pixels PIX _1_1 to PIX _ m _ n are not shown. The control unit CON determines the driving capability of the data driving signals S1 to Sm according to the data line loads DLD _1 to DLD _ m corresponding to the data lines DL1 to DLm to generate the first control signals CON _ S1 to CON _ Sm. In this embodiment, the first control signals CON _ S1 to CON _ Sm are implemented as current signals to control the driving units DRI _ S1 to DRI _ Sm using the current signals. Specifically, as shown in fig. 3, each of the driving units DRI _ S1 to DRI _ Sm can be respectively implemented by an output circuit OC, which can be a Class AB Amplifier (Class AB Amplifier), but not limited thereto, and includes a current bias signal source IBIAS, an Amplifier OP and a plurality of transistors M. The current bias signal source IBIAS of the output circuit OC can be controlled by the first control signal CON _ S with different current signals to individually adjust the driving capability of the driving units DRI _ S1 to DRI _ Sm. Since the driving capability of each of the driving units DRI _ S1 to DRI _ Sm only needs to be set by one current signal, the circuit area can be greatly saved in this embodiment, and the driving units DRI _ S1 to DRI _ Sm can be controlled by different first control signals CON _ S1 to CON _ Sm respectively. It should be noted that the current signal can also be converted into a voltage signal and then used as the first control signal CON _ S to be input to the driving units DRI _ S1 to DRI _ Sm.

In addition, please refer to fig. 4, wherein fig. 4 is a schematic diagram of a display device 40 according to an embodiment of the invention. For simplicity, FIG. 4 only shows the control unit CON, the plurality of driving units DRI _ G1-DRI _ Gn of the second driving circuit DRI _ G, and the scan line loads SLD _ 1-SLD _ n corresponding to the driving units DRI _ G1-DRI _ Gn, and the rest of the driving units DRI _ S, the data lines DL 1-DLm, the scan lines SL 1-SLn, and the pixels PIX _ 1_1-PIX _ m _ n are not shown. The control unit CON determines the driving capability of the data driving signals G1 Gn according to the scanning line loads SLD _1 SLD _ n corresponding to the scanning lines SL1 SLn, so as to generate the second control signals CON _ G1 CON _ Gn. In this embodiment, the second control signals CON _ G1 CON _ Gn are implemented as current signals to control the second driving circuit DRI _ G. Similarly, the current signal may be converted into a voltage signal and then input as the second control signals CON _ G1 to CON _ Gn to the driving units DRI _ G1 to DRI _ Gn. Specifically, because the loads SLD _1 to SLD _ n of each scanning line are different, when the load is larger, the climbing time is longer; when the load is low, the climb time is shorter. That is, the climbing times corresponding to the scan line loads SLD _1 to SLD _ n are all different. In this case, the second driving circuit DRI _ G and the first driving circuit DRI _ S cannot be matched in timing, which results in abnormal operation of the panel 100. Therefore, the control unit CON can determine the driving capability of the gate driving signals G1 Gn according to the scan line loads SLD _1 SLD _ n, and further generate the second control signals CON _ G1 CON _ Gn to adjust the ramp-up time of the scan line loads SLD _1 SLD _ n for different loads. As shown in fig. 5, fig. 5 is a schematic diagram of the climbing time of different scan line loads according to the embodiment of the present invention. The driving circuit DRI _ G sets different intermediate voltage times (i.e., EQ state times) according to the second control signals CON _ G1 to CON _ Gn, such that the bit-in times t of different scan line loads are the same. In this case, even if the rising time of each of the scan line loads SLD _1 to SLD _ n is different, the in-place time t of each of the scan line loads SLD _1 to SLD _ n can be made the same by extending or shortening the intermediate voltage time. In this way, the control unit CON can adaptively adjust the driving capability of each scan line load.

Similarly, in addition to actually measuring the values of the scan line loads SLD _1 SLD _ n, the control unit CON may determine the loads of the scan line loads SLD _1 SLD _ n and evaluate whether the driving capability of the gate driving signals G1 Gn to the scan line loads SLD _1 SLD _ n is appropriate according to a stability or a ramp time of the scan line loads SLD _1 SLD _ n, so as to further determine the second control signals CON _ G1 CON _ Gn, thereby generating the appropriate gate driving signals G1 Gn.

In another embodiment, please refer to fig. 6, and fig. 6 is a schematic diagram of a display device 60 according to an embodiment of the present invention. For simplicity, fig. 6 only illustrates the control unit CON, the plurality of driving units DRI _ S1 to DRI _ Sm of the first driving circuit DRI _ S, and the data line loads DLD _1 to DLD _ m corresponding to the driving units DRI _ S1 to DRI _ Sm, and the rest of the second driving circuit DRI _ G, the data lines DL1 to DLm, the scan lines SL1 to SLn, and the pixels PIX _1_1 to PIX _ m _ n are not shown. As shown in fig. 6, each of the driving units DRI _ S1 to DRI _ Sm can be implemented by an Output circuit OC _ S, wherein the Output circuit OC _ S can be composed of one or more Output circuits OC shown in fig. 3, and includes Output stages (Output stages) with different transistor sizes (sizes) for driving the corresponding data line loads DLD _1 to DLD _ m. In this way, the control unit CON may determine the driving capability of the driving units DRI _ S1 to DRI _ Sm according to the data line loads DLD _1 to DLD _ m, and adjust the intermediate voltage time of each of the data line loads DLD _1 to DLD _ m by selecting the size of the output stage of the corresponding output circuit OC _ S, so that the in-place time t of each of the data line loads DLD _1 to DLD _ m is the same. In addition, in some embodiments of the present invention, the control unit CON may further control the driving capability of the driving units DRI _ S1 to DRI _ Sm by adjusting the Slew Rate (Slew Rate) of the output circuits OC and OC _ S.

In order to reduce the circuit layout complexity of the display device or adaptively adjust the circuit layout thereof according to the shape of the panel 100, in an embodiment, the data line loads DLD _1 to DLD _ m or the scan line loads SLD _1 to SLD _ n may be divided into different groups to be driven by the corresponding first driving circuit DRI _ S or second driving circuit DRI _ G. Referring to fig. 7, fig. 7 is a schematic diagram of a display device 70 according to an embodiment of the invention. The display device 70 may be an electronic product having a display panel such as a smart phone, a tablet computer, a television, a notebook computer, or a wearable device, or a driving circuit for driving the display panel, without being limited thereto. The display device 70 is similar to the

display devices

10, 20, 30, 60 shown in fig. 1-3 and 6, and therefore functionally similar components and signals follow the same symbols. In this embodiment, two adjacent data line loads DLD _1 and DLD _2 in the circuit layout are divided into a group DG1, and the data driving signals S1 and S2 generated by the driving units DRI _ S1 and DRI _ S2 corresponding to the two data line loads DLD _1 and DLD _2 and the data line loads DLD _1 and DLD _2 are controlled by the same first control signal CON _ S1. Similarly, two adjacent data line loads DLD _3, DLD _4 are divided into a group DG2, and so on. In this way, the number of control signals required to be output by the control unit CON in the display device 70 can be reduced to m/2 compared to the

display devices

10, 20, 30, and 60. In addition, the classification of the data line loads DLD _1 and DLD _2 can be adjusted according to the shape of the panel 100, for example, when the panel 100 is a circle, since the loads of the data line load DLD _1 and the data line load DLD _ m of the bilaterally symmetric circle may be similar or the same, the data line load DLD _1 and the data line load DLD _ m can be divided into the same group, thereby reducing the number of the driving units DRI _ S. Likewise, the scan line loads SLD _1 to SLDn may also be implemented in groups for the driving unit DRI _ G, thereby reducing the number of control signals that the control unit CON needs to output.

The flow of the control unit CON determining the driving capability of the corresponding data driving signals S1 to Sm or the gate driving signals G1 to Gn according to the data line loads DLD _1 to DLD _ m or the scan line loads SLD _1 to SLDn can be summarized as a driving method 80, as shown in fig. 8. The driving method 80 is applied to a driving module of a display device (e.g., an electronic product having a display panel, such as a smart phone, a tablet computer, a notebook computer, or a wearable device), and includes the following steps:

step 802: data line loads DLD _1 to DLD _ m corresponding to the data lines DL1 to DLm, or scan line loads SLD _1 to SLDn corresponding to the scan lines SL1 to SLn are determined.

Step 804: the driving capability of the data driving signals S1 to Sm or the gate driving signal CON _ G is determined according to the data line loads DL1 to DLm and the scan line loads SLD _1 to SLDn.

Step 806: the first control signal CON _ S or the second control signal CON _ G is generated according to the driving capability of the data driving signals S1 to Sm or the gate driving signals G1 to Gn.

According to the driving method 80, the display device determines the driving capability of the data driving signal or the gate driving signal by the data line load or the scan line load, so as to generate the control signal to adjust the corresponding driving capability. Therefore, the abnormal operation caused by the driving of all the pixels on the panel with the same driving capability can be avoided.

In view of the above, the embodiments of the invention can adjust the driving capability of the driving unit to achieve the same charging and driving capability for all pixels of the panel when different loads are applied. It should be noted that the foregoing embodiments are provided to illustrate the spirit of the present invention, and those skilled in the art can make appropriate modifications without limitation thereto. For example, the driving capability of the driving unit can be adjusted according to the architecture or requirement of the computer system by adjusting not only the driving capability of the first driving Circuit DRI _ S and the second driving Circuit DRI _ G, but also the driving capability of the first driving Circuit DRI _ S and the second driving Circuit DRI _ G, so as to make the data lines DL1 to DLm and the scan lines SL1 to SLn achieve the same charging and driving capability together, or the driving capability of the first driving Circuit DRI _ S, DRI _ G can be implemented by the same Integrated Circuit (IC) or different ICs, or the driving capability of the driving unit can be adjusted by adjusting the Input Stage (Input Stage) and the slew rate of the AB amplifier of the output Circuit.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A driving module for a display device, the driving module comprising:

a plurality of first driving units generating a plurality of data driving signals to a plurality of data lines of the display device according to a plurality of first control signals;

the plurality of second driving units are used for generating a plurality of grid driving signals to a plurality of scanning lines of the display device according to a plurality of second control signals; and

a control unit for determining a driving capability of the data driving signals according to a plurality of data line loads corresponding to the data lines to generate the first control signals, or determining a driving capability of the gate driving signals according to a plurality of scan line loads corresponding to the scan lines to generate the second control signals;

the control unit determines a driving capability of the data driving signals or the gate driving signals according to a climbing time of the data line loads or the scan line loads to generate the first control signals or the second control signals;

wherein the climbing time is used for adjusting an intermediate voltage time when the second control signals are at an intermediate voltage, so that the first driving units are matched with the second driving units in a time sequence;

wherein the sum of the ramp-up time of the plurality of data line loads and the intermediate voltage time is the same, or the sum of the ramp-up time of the plurality of scan line loads and the intermediate voltage time is the same.

2. The driving module of claim 1, wherein the plurality of data line loads and the plurality of scan line loads are associated with a plurality of pixels of the display device.

3. The driver module of claim 2, wherein the first control signal or the second control signal is a digital code, a voltage signal, or a current signal.

4. The driving module as claimed in claim 2, wherein the control unit determines the driving capability of the data driving signals or the gate driving signals according to a stability of the data line loads or the scan line loads to generate the first control signals or the second control signals.

5. The driver module of claim 2, wherein the first driver unit or the second driver unit includes output stages having different transistor sizes, the first control signal or the second control signal controlling the first driver unit or the second driver unit to select the size of the output stage.

6. The driver module as claimed in claim 1, wherein the first control signal controls one of the first driving units to generate a data driving signal; or, the second control signal controls one of the second driving units to generate a gate driving signal.

7. The driver module of claim 1, wherein the first control signal controls a plurality of first driving units therein to generate a plurality of data driving signals; or, the second control signal controls a plurality of second driving units to generate a plurality of gate driving signals.

8. A driving method for a driving module of a display device, the display device including a plurality of data lines and a plurality of scan lines, the driving method comprising:

determining a plurality of data line loads corresponding to the plurality of data lines or a plurality of scanning line loads corresponding to the plurality of scanning lines;

determining driving capacities of a plurality of data driving signals and a plurality of gate driving signals according to the plurality of data line loads and the plurality of scanning line loads; and

generating a plurality of first control signals and a plurality of second control signals according to the driving capability of the plurality of data driving signals and the plurality of gate driving signals;

wherein the control unit determines a driving capability of the data driving signals or the gate driving signals according to a climbing time of the data line loads or the scan line loads to generate the first control signals or the second control signals;

9. The driving method according to claim 8, wherein the plurality of data line loads and the plurality of scan line loads are associated with a plurality of pixels of the display device.

10. The driving method of claim 8, wherein the first control signal or the second control signal is a digital code, a voltage signal, or a current signal.

11. The driving method as claimed in claim 9, wherein the control unit determines a driving capability of the data driving signals or the gate driving signals according to a stability of the data line loads or the scan line loads to generate the first control signal or the second control signals.

12. The driving method according to claim 9, wherein the control unit outputs the first control signal or the second control signal to a first driving unit or a second driving unit, and the first driving unit or the second driving unit includes output stages having different transistor sizes, and the first driving unit or the second driving unit is controlled by the first control signal or the second control signal to select a size of an output stage.

13. The driving method as claimed in claim 9, wherein the first control signal controls a first driving unit to generate one of the data driving signals; or, the second control signal controls a second driving unit to generate one of the gate driving signals.

14. The driving method of claim 8, wherein the first control signal controls a plurality of first driving units to generate a plurality of data driving signals therein; or, the second control signal controls a plurality of second driving units to generate a plurality of gate driving signals.