CN111223430B - Driving circuit and driving method thereof - Google Patents

Abstract

A driving circuit and a driving method thereof. The drive circuit includes a detection circuit and a transmission circuit. The detection circuit is used for generating the detection signal to the transmission channel, and detects the channel length of the transmission channel according to the detection time of the detection signal, and the detection circuit generates the data adjustment signal according to the detection time. The transmission circuit is coupled to the detection circuit. The transmission circuit is used for generating a data signal, and adjusting a plurality of setting values of the data signal according to the data adjusting signal.

Description

Driving circuit and driving method thereof

technical field

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

Background technique

With the advancement of electronic technology, consumer electronic products have become an essential tool in people's lives. In order to provide a good human-machine interface, it has become a trend to configure high-quality display devices on consumer electronic products.

In the conventional display technology, the driving circuit of the timing controller usually transmits the data signal to the corresponding source driving circuit respectively through a plurality of transmission channels. However, in the prior art, since the channel lengths of the transmission channels between the driving circuit of the timing controller and each source driving circuit are not the same, the designer needs to additionally adjust the channel lengths of the transmission channels according to the different channel lengths. multiple set values in the data signal to adjust. In this case, the prior art is more time-consuming in operation and more likely to generate additional labor costs.

SUMMARY OF THE INVENTION

The invention provides a driving circuit and a driving method thereof, which can make the driving circuit detect the channel length of the corresponding transmission channel through the detection mechanism of the detection circuit, so that the transmission circuit can adjust the data signal according to the detection result of the detection circuit. Multiple setting values, thereby improving overall work efficiency and reducing labor costs.

The drive circuit of the present invention includes a detection circuit and a transmission circuit. The detection circuit is used for generating the detection signal to the transmission channel, and detects the channel length of the transmission channel according to the detection time of the detection signal, and the detection circuit generates the data adjustment signal according to the detection time. The transmission circuit is coupled to the detection circuit, and the transmission circuit is used for generating a data signal and adjusting a plurality of setting values of the data signal according to the data adjustment signal.

In the driving method of the driving circuit of the present invention, the detection circuit generates a detection signal to the transmission channel, detects the channel length of the transmission channel according to the detection time of the detection signal, and generates the data adjustment signal according to the detection time by the detection circuit. A data signal is generated by the transmission circuit, and a plurality of setting values of the data signal are adjusted according to the data adjustment signal.

Based on the above, the driving circuit of the present invention can obtain the channel length of the corresponding transmission channel through the detection mechanism of the detection circuit during the detection time interval, and provide the data adjustment signal to the transmission according to the channel length (or the detection time of the detection signal). circuit. Thereby, the transmission circuit can adjust a plurality of setting values of the data signal according to the data adjustment signal during the normal display time. In this way, no matter what the channel length of the transmission channel between the driving circuit and the source driving circuit is, the driving circuit of the present invention does not require additional technical personnel to adjust the data signal according to the channel length of different transmission channels. The multiple setting values can be adjusted to improve the overall work efficiency and reduce labor costs.

The present invention is described in detail below with reference to the accompanying drawings and specific embodiments, but is not intended to limit the present invention.

Description of drawings

FIG. 1 is a schematic diagram illustrating a driving circuit according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of the detection circuit and the source driving circuit according to the embodiment of FIG. 1 of the present invention.

FIG. 3 is a schematic diagram illustrating a lookup table according to an embodiment of the present invention.

FIG. 4 is a timing diagram illustrating a driving circuit according to an embodiment of the present invention.

5A is a schematic diagram of the relationship between the detection time and the set value of the data signal in the look-up table shown in FIG. 3 according to the present invention.

5B is a schematic diagram of the relationship between detection time and channel length in the look-up table shown in FIG. 3 according to the present invention.

FIG. 6 is a flowchart of a driving method of a driving circuit according to an embodiment of the present invention.

Among them, reference numerals:

100, 100_1～100_N: drive circuit

110: Detection circuit

120: Transmission circuit

130: Counter

140: Pulse generation circuit

150: Lookup Table

200, 200_1～200_N: source drive circuit

210: Receiver circuit

A, B, C: Nodes

CH, CH1～CHN: Transmission channel

CS1, CS2, CS3: Control signals

DS: Heartbeat

DAS: Data Adjustment Signal

EQ: Equalization Coefficient

GND: reference ground terminal

ISS: Current Source

PEMP: Pre-emphasis factor

REF_CLK: reference clock pulse signal

RF: Resistance

SW1, SW2, SW3: toggle switch

SW: voltage amplitude potential

S610, S620: Steps

T1: Initial time interval

T2: detection time interval

T3: normal display time interval

TX: data signal

TDS, TDS1, TDS2: Detection time

V11, V12, V21, V22: Voltage potential

Detailed ways

Below in conjunction with accompanying drawing, structure principle and working principle of the present invention are described in detail:

The term "coupled (or connected)" as used throughout the specification of the present invention (including the scope of the claims) may refer to any direct or indirect means of connection. For example, if the text describes that a first device is coupled (or connected) to a second device, it should be interpreted that the first device can be directly connected to the second device, or the first device can be connected to the second device through other devices or indirectly connected to the second device by a connecting means. In addition, where possible, elements/components/steps using the same reference numerals in the drawings and embodiments represent the same or similar parts. Elements/components/steps that use the same reference numerals or use the same terminology in different embodiments may refer to relative descriptions of each other.

FIG. 1 is a schematic diagram illustrating a driving circuit 100 according to an embodiment of the present invention. Referring to FIG. 1 , in this embodiment, the driving circuit 100 includes a detection circuit 110 , a transmission circuit 120 and a switch SW1 . in. The driving circuit 100 may be coupled to the transmission channel CH, and the transmission channel CH may be coupled to the source driving circuit 200 .

In the driving circuit 100 shown in FIG. 1 , the detection circuit 110 is coupled to the transmission circuit 120 . The switch SW1 is coupled between the detection circuit 110 , the transmission circuit 120 and the transmission channel CH. The switch SW1 can be switched between the node A and the node B according to the timing state of the control signal CS1, so as to conduct the data transmission path between the transmission circuit 120 and the transmission channel CH or between the detection circuit 110 and the transmission channel CH data transmission path.

It should be noted that this embodiment does not limit the number of driving circuits, transmission channels and source driving circuits. Those with ordinary knowledge in the art can determine the number of driving circuits, transmission channels and source driving circuits according to design requirements. For example, under some design requirements, the present embodiment may further include multiple driving circuits 100_1 ˜ 100_N, multiple transmission channels CH1 ˜CHN, and multiple source driving circuits 200_1 ˜ 200_N. The coupling modes and operation relationships among the driving circuits 100_1 - 100_N, the transmission channels CH1 - CHN and the source driving circuits 200_1 - 200_N are the same as the driving circuit 100 , the transmission channels CH and the source driving circuit 200 .

In addition, under other design requirements, this embodiment can also be coupled to a plurality of transmission channels CH, CH1 ˜CHN through one driving circuit 100 , and these transmission channels CH, CH1 ˜CHN are further coupled to a plurality of transmission channels, respectively. The source driving circuits 200 , 200_1 ˜ 200_N can achieve a circuit structure of one driving circuit 100 to a plurality of source driving circuits 200 , 200_1 ˜ 200_N, wherein the above N is a positive integer. Moreover, in the embodiment of FIG. 1 , the driving circuits 100 and 100_1 to 100_N may be configured in a timing controller, so as to perform related operations in the clock controller.

Regarding the operation of the driving circuit 100 of this embodiment, specifically, when the driving circuit 100 operates in the detection time interval, the switch SW1 can be switched to the node B according to the control signal CS1 to turn on the detection circuit 110 and the transmission channel Data transmission path between CHs. At the same time, the detection circuit 110 can provide the detection signal DS to the source driving circuit 200 through the transmission channel CH, and obtain the channel length of the transmission channel CH according to the detection time of the detection signal DS. Next, the detection circuit 110 may provide the data adjustment signal DAS to the transmission circuit 120 according to the detection time of the detection signal DS (or the channel length of the transmission channel CH).

On the other hand, when the driving circuit 100 operates in the normal display interval, the switch SW1 can be switched to the node A according to the control signal CS1 to conduct the data transmission path between the transmission circuit 120 and the transmission channel CH. At the same time, the transmission circuit 120 can adjust a plurality of setting values of the data signal TX according to the data adjustment signal DAS. Next, the transmission circuit 120 can provide the adjusted data signal TX to the corresponding source driver circuit 200 through the transmission channel CH.

The driving circuits 100_1-100_N, the transmission channels CH1-CHN, and the source driving circuits 200_1-200_N shown in FIG. 1 can be deduced by referring to the relevant descriptions of the driving circuit 100, the transmission channel CH, and the source driving circuit 200, and therefore no longer Repeat.

According to the description of the above-mentioned embodiment of FIG. 1 , the driving circuit 100 can obtain the channel length of the corresponding transmission channel CH through the detection mechanism of the detection circuit 110 when detecting the time interval, and according to the channel length (or the detection signal) DS detection time) to provide the data adjustment signal DAS to the transmission circuit 120 . In this way, the transmission circuit 120 can adjust a plurality of setting values of the data signal TX pre-transmitted to the source driving circuit 200 according to the data adjustment signal DAS during the normal display time. That is to say, no matter what the channel length of the transmission channel between the driving circuit and the source driving circuit is, the driving circuit of this embodiment can adjust the plurality of setting values of the data signal correspondingly according to the result detected by the detection circuit. , without the need for additional technicians to adjust the multiple set values in the data signal according to the channel lengths of different transmission channels, thereby improving the overall work efficiency and reducing labor costs.

FIG. 2 is a schematic diagram of the detection circuit 110 and the source driving circuit 200 according to the embodiment of FIG. 1 of the present invention. Referring to FIG. 2 , the detection circuit 110 may include a counter 130 and a pulse generating circuit 140 . The counter 130 is coupled between the transmitting circuit 120 and the pulse generating circuit 140 . The pulse generating circuit 140 is coupled between the counter 130 and the node B. The pulse generating circuit 140 may include a resistor RF, a switch SW3 and a current source ISS. The resistor RF is coupled between the node B and the reference ground GND, the switch SW3 is coupled between the node B and the current source ISS, and the current source ISS is coupled between the switch SW3 and the reference ground GND. It should be noted that, under some design requirements, the pulse generating circuit 140 may be a pulse generating circuit known to those skilled in the art for generating pulses, or other pulse generating circuits.

In addition, please refer to FIG. 2 and FIG. 3 at the same time. FIG. 3 is a schematic diagram illustrating the lookup table 150 according to an embodiment of the present invention. In this embodiment, the look-up table 150 can be coupled to the counter 130, wherein the look-up table 150 can be used to record the channel length of the transmission channel CH (or the detection time of the detection signal DS) and a plurality of set values of the data signal TX ( For example, the relationship between the voltage amplitude potential (Swing Level), the pre-emphasis (Pre-emphasis) coefficient, and the equalization (Equalize) coefficient) of the data signal TX. In this embodiment, the look-up table 150 can be built into the driving circuit 100 , or under other design requirements, the look-up table 150 can also be externally mounted outside the driving circuit 100 and coupled to the counter 130 .

Specifically, the pulse generating circuit 140 can be used to generate the detection signal DS according to the timing state of the control signal CS3. For example, when the switch SW3 is turned on according to the control signal CS3, the pulse generating circuit 140 can generate the detection signal DS according to the current generated by the current source ISS and the resistance RF. Next, the counter 130 may count the detection time of the detection signal DS in the detection time interval according to the reference clock signal REF_CLK. In addition, the detection circuit 110 can search a plurality of setting values corresponding to the data signal TX from the lookup table 150 according to the counting result of the counter 130 (ie, the detection time of the detection signal DS) to generate the data adjustment signal DAS correspondingly.

On the other hand, in the source driving circuit 200 shown in FIG. 2 , the source driving circuit 200 may include a receiving circuit 210 and a switch SW2 . The receiving circuit 210 is coupled to the transmission channel CH through the node C. The switch SW2 is coupled between the node C and the reference ground GND. The source driving circuit 200 can determine to turn on the data transmission path between the transmission channel CH and the receiving circuit 210 or the data transmission path between the transmission channel CH and the reference ground GND according to the timing state of the control signal CS2.

FIG. 4 is a timing diagram illustrating a driving circuit 100 according to an embodiment of the present invention. Please refer to FIG. 1 to FIG. 4 at the same time, for the details of the operation of the driving circuit 100, in detail, when the driving circuit 100 operates in the initial time interval T1, the control signal CS1 can be set to a high voltage level (eg, the voltage level V11). , so that the switch SW1 can be switched to the node A according to the control signal CS1, and the data transmission path between the transmission circuit 120 and the transmission channel CH is turned on. In addition, the control signal CS2 can be set to a high voltage level (eg, the voltage level V21 ), so that the switch SW2 can be turned off according to the control signal CS2. In other words, in the initial time interval T1, the transmission circuit 120, the transmission channel CH, and the receiving circuit 210 of the source driving circuit 200 may form the first data transmission path.

Further, in the initial time interval T1, the transmitting circuit 120 can provide the data signal TX to the receiving circuit 210 through the first data transmission path, so that both the driving circuit 100 and the source driving circuit 200 can confirm the first data signal TX. A data transmission path has been formed. The data signal TX in this embodiment may be a differential signal, and when the first data transmission paths are formed, the positive and negative signals of the differential signal may be set to high voltage potentials.

It is worth mentioning that, when the driving circuit 100 switches from the initial time interval T1 to the detection time interval T2, the control signal CS2 can be set to a low voltage level (eg, the voltage level V22 ) first, so that the switch SW2 can be switched. It can be turned on according to the control signal CS2. Then, when the driving circuit 100 operates in the detection time interval T2, the control signal CS1 can be set to a low voltage level (eg, the voltage level V12) again, so that the switch SW1 can be switched to the node B according to the control signal CS1, And turn on the data transmission path between the detection circuit 110 and the transmission channel CH. At the same time, the switch SW3 can be turned on according to the control signal CS3 set to the enabled state, so that the driving circuit 100 can start the detection mechanism of the detection circuit 110 . In other words, in the detection time interval T2, the detection circuit 110, the transmission channel CH, and the reference ground terminal GND of the source driving circuit 200 may form the second data transmission path.

Specifically, in the detection time interval T2 , the detection circuit 110 can provide the generated detection signal DS to the reference ground terminal GND of the source driving circuit 200 through the second data transmission path. It is worth mentioning that, in this embodiment, the detection circuit 110 may define the detection time TDS1 as the time when the detection circuit 110 transmits the detection signal DS to the reference ground terminal GND of the source driving circuit 200 . Next, after the reference ground terminal GND of the source driving circuit 200 receives the detection signal DS, the source driving circuit 200 can further transmit or reflect the reverse detection signal DS to the detection signal according to the effect of the characteristic impedance. circuit 110. The time for transmitting or reflecting the reverse detection signal DS to the detection circuit 110 may be defined as detection time TDS2.

In other words, when the channel length of the transmission channel CH between the driving circuit 100 and the source driving circuit 200 is longer, the overall detection time TDS of the detection circuit 110 (that is, the sum of the detection times TDS1 and TDS2 ) will be longer. , when the channel length of the transmission channel CH between the driving circuit 100 and the source driving circuit 200 is shorter, the overall detection time TDS of the detection circuit 110 is also shorter. That is, the channel length of the transmission channel CH is positively correlated with the detection time TDS.

Here, please refer to FIG. 5A , which is a schematic diagram illustrating the relationship between the detection time TDS and the set value of the data signal TX in the lookup table 150 shown in FIG. 3 according to the present invention. In this embodiment, the multiple setting values of the data signal TX may be the voltage amplitude potential SW of the data signal TX, the pre-emphasis coefficient PEMP, and the equalization coefficient EQ, respectively. Among them, the voltage amplitude potential SW can be used to adjust the DC voltage potential of the data signal TX; the pre-emphasis coefficient PEMP can be used to adjust the switching speed (or the amplitude of the rising edge and the falling edge) of the data signal TX; the equalization coefficient EQ can be used to adjust the The data signal TX is equalized to optimize the data signal TX.

1 to 5A again, when the driving circuit 100 operates in the detection time interval T2, the counter 130 may start to count the detection time TDS of the detection signal DS. Moreover, after the counting operation of the counter 130 ends, the detection circuit 110 can search for a plurality of setting values (ie, the data signal TX) corresponding to the data signal TX from the look-up table 150 shown in FIG. 5A according to the counting result of the counter 130 The voltage amplitude potential SW of the TX, the pre-emphasis coefficient PEMP and the equalization coefficient EQ) are correspondingly generated to generate the data adjustment signal DAS corresponding to these set values.

For example, if the counting result of the counter 130 indicates that the detection time TDS of the detection signal DS is between 5 nanoseconds (ns) and 6 ns, the detection circuit 110 can correspondingly generate the data signal TX according to the detection time TDS The data adjustment signal DAS with a plurality of set values (eg, the voltage amplitude potential SW is 200 millivolts (mV), the pre-emphasis coefficient PEMP is 1.5 decibels (dB), and the equalization coefficient EQ is 3 dB) is sent to the transmission circuit 120 . It should be noted that those skilled in the art can also set other setting values of the data signal TX in the look-up table 150 according to design requirements, and the embodiment is not limited thereto.

In addition, please refer to FIG. 5B , which is a schematic diagram illustrating the relationship between the detection time TDS and the channel length in the lookup table shown in FIG. 3 according to the present invention. In this embodiment, the detection circuit 110 can further obtain the channel length of the corresponding transmission channel CH from the lookup table 150 shown in FIG. 5B according to the counting result of the counter 130 (ie, the detection time TDS of the detection signal DS). For example, assuming that the counting result of the counter 130 indicates that the detection time TDS of the detection signal DS is 12 ns, the detection circuit 110 can obtain the channel length of the corresponding transmission channel CH by looking up the table 150 as 11.8 unit lengths.

Referring back to FIG. 1 to FIG. 4 , when the driving circuit 100 switches from the detection time interval T2 to the normal display time interval T3, the positive signal and the negative signal of the data signal TX (or the differential signal) can be set first. Set as a low voltage potential. Then, when the driving circuit 100 operates in the normal display time interval T3, the control signal CS1 can be set to a high voltage level (eg, the voltage level V11) again, so that the switch SW1 can be switched to the node A again according to the control signal CS1 , and turn on the data transmission path between the transmission circuit 120 and the transmission channel CH. In addition, the control signal CS2 can be set to a high voltage level (eg, the voltage level V21) again, so that the switch SW2 can be turned off according to the control signal CS2. In other words, in the normal display time interval T3, the transmission circuit 120, the transmission channel CH, and the receiving circuit 210 of the source driving circuit 200 can form the first data transmission path again.

Specifically, in the normal display time interval T3 , the transmission circuit 120 may adjust and set a plurality of setting values of the data signal TX according to the data adjustment signal DAS provided by the detection circuit 110 . For example, it is also assumed that in the detection time interval T2, the counting result of the counter 130 indicates that the detection time TDS of the detection signal DS is between 5 ns and 6 ns. In this case, in the normal display time interval T3, the transmission circuit 120 can adjust the voltage amplitude potential SW of the data signal TX to 200mV according to the data adjustment signal DAS, the pre-emphasis coefficient PEMP to be adjusted to 1.5dB, and the equalization coefficient EQ adjusted to 3dB. Thereby, the transmission circuit 120 can transmit the adjusted data signal TX to the corresponding source driver circuit 200 through the first data transmission path.

In other words, no matter what the channel length of the transmission channel CH between the driving circuit 100 and the source driving circuit 200 is, the driving circuit 100 of this embodiment can adjust the data signal TX correspondingly according to the result detected by the detection circuit 110 . There is no need for additional technicians to adjust the multiple set values in the data signal TX according to the channel lengths of different transmission channels CH, thereby improving the overall work efficiency and reducing labor costs .

FIG. 6 is a flowchart of a driving method of the driving circuit 100 according to an embodiment of the present invention. Please refer to FIG. 1 and FIG. 6 at the same time, in step S610 , the driving circuit may generate a detection signal from the detection circuit to the transmission channel, and detect the channel length of the transmission channel according to the detection time of the detection signal, and the detection circuit may determine the length of the transmission channel according to the detection time. A data adjustment signal is generated. In step S620, the driving circuit may generate the data signal from the transmission circuit, and adjust the plurality of setting values of the data signal according to the data adjustment signal.

The implementation details of each step have been described in detail in the foregoing embodiments and implementation manners, and will not be repeated here.

To sum up, the driving circuit of the present invention can obtain the channel length of the corresponding transmission channel through the detection mechanism of the detection circuit during the detection time interval, and provide the data adjustment signal according to the channel length (or the detection time of the detection signal) to the transmission circuit. Thereby, the transmission circuit can adjust a plurality of setting values of the data signal according to the data adjustment signal during the normal display time. In this way, no matter what the channel length of the transmission channel between the driving circuit and the source driving circuit is, the driving circuit of the present invention does not require additional technical personnel to adjust the data signal according to the channel length of different transmission channels. The multiple setting values can be adjusted to improve the overall work efficiency and reduce labor costs.

Of course, the present invention can also have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and modifications according to the present invention, but these corresponding Changes and deformations should belong to the protection scope of the appended claims of the present invention.

Claims (12)

1. A driver circuit, comprising:

the detection circuit is used for generating a detection signal to a transmission channel and detecting the channel length of the transmission channel according to detection time of the detection signal, and the detection circuit generates a data adjusting signal according to the detection time; and

a transmission circuit, coupled to the detection circuit, for generating a data signal and adjusting a plurality of setting values of the data signal according to the data adjustment signal;

the driving circuit further includes:

the first switch is coupled among the transmission circuit, the detection circuit and the transmission channel and conducts a data transmission path between the transmission circuit and the transmission channel or a data transmission path between the detection circuit and the transmission channel according to a first control signal.

2. The driving circuit of claim 1, further comprising:

the look-up table records the relation between the detection time and the set values of the data signal, and the detection circuit generates the data adjusting signal through the look-up table according to the detection signal.

3. The driving circuit of claim 1, wherein when the first switch turns on a data transmission path between the transmission circuit and the transmission channel according to the first control signal, the transmission circuit provides the data signal to a source driving circuit through the transmission channel, and,

when the first switch switches on the data transmission path between the detection circuit and the transmission channel according to the first control signal, the detection circuit provides the detection signal to the source electrode driving circuit through the transmission channel.

4. The driving circuit of claim 3, wherein the source driving circuit comprises:

a receiving circuit for receiving the data signal; and

the second switch is coupled among the transmission channel, the receiving circuit and a reference grounding terminal and conducts a data transmission path between the transmission channel and the receiving circuit or a data transmission path between the transmission channel and the reference grounding terminal according to a second control signal.

5. The driving circuit as claimed in claim 4, wherein when the driving circuit operates in a detection time interval, the first switch turns on a data transmission path between the detection circuit and the transmission channel according to the first control signal, and the second switch turns on a data transmission path between the transmission channel and the ground reference according to the second control signal, the detection circuit provides the detection signal to the ground reference through the transmission channel to detect a channel length of the transmission channel, and,

when the driving circuit operates in a normal display time interval, the first switch switches on a data transmission path between the transmission circuit and the transmission channel according to the first control signal, the second switch switches on a data transmission path between the transmission channel and the receiving circuit according to the second control signal, and the transmission circuit provides the data signal to the receiving circuit through the transmission channel.

6. The driving circuit of claim 1, wherein the detection circuit comprises:

a pulse generating circuit for generating the detecting signal according to a first control signal; and

a counter coupled between the pulse generating circuit and the transmitting circuit for counting the detecting time of the detecting signal,

the detection circuit generates the data adjusting signal according to a counting result of the counter.

7. A driving method of a driving circuit, comprising:

generating a detection signal to a transmission channel by a detection circuit, detecting the channel length of the transmission channel according to a detection time of the detection signal, and generating a data adjusting signal by the detection circuit according to the detection time; and

generating a data signal by a transmission circuit, and adjusting a plurality of set values of the data signal according to the data adjusting signal;

further comprising:

a first switch is used for conducting a data transmission path between the transmission circuit and the transmission channel or a data transmission path between the detection circuit and the transmission channel according to a first control signal.

8. The driving method as claimed in claim 7, further comprising:

recording the relation between the detection time and the set values of the data signal by a lookup table; and

the detection circuit generates the data adjustment signal through the lookup table according to the detection signal.

9. The driving method as claimed in claim 7, wherein the step of turning on the data transmission path between the transmission circuit and the transmission channel or the data transmission path between the detection circuit and the transmission channel by the first switch according to the first control signal comprises:

when the first switch switches on a data transmission path between the transmission circuit and the transmission channel according to the first control signal, the transmission circuit provides the data signal to a source electrode driving circuit through the transmission channel; and

when the first switch switches on the data transmission path between the detection circuit and the transmission channel according to the first control signal, the detection circuit provides the detection signal to the source electrode driving circuit through the transmission channel.

10. The driving method as claimed in claim 9, wherein the step of providing the data signal from the transmitting circuit to the source driving circuit via the transmission channel comprises:

receiving the data signal by a receiving circuit; and

a second switch is used for conducting a data transmission path between the transmission channel and the receiving circuit or a data transmission path between the transmission channel and a reference grounding terminal according to a second control signal.

11. The driving method as claimed in claim 10, wherein the step of turning on the data transmission path between the transmission channel and the receiving circuit or the data transmission path between the transmission channel and the ground reference by the second switch according to the second control signal comprises:

when the driving circuit operates in a detection time interval, the first switch switches on a data transmission path between the detection circuit and the transmission channel according to the first control signal, and the second switch switches on a data transmission path between the transmission channel and the reference ground terminal according to the second control signal;

providing the detection signal to the reference ground terminal through the transmission channel by the detection circuit to detect the channel length of the transmission channel;

when the driving circuit operates in a normal display time interval, the first switch switches on the data transmission path between the transmission circuit and the transmission channel according to the first control signal, and the second switch switches on the data transmission path between the transmission channel and the receiving circuit according to the second control signal; and

the data signal is provided from the transmitting circuit to the receiving circuit via the transmission channel.

12. The driving method as claimed in claim 7, wherein the step of generating the detection signal to the transmission channel by the detection circuit and detecting the channel length of the transmission channel according to the detection time of the detection signal comprises:

generating the detection signal by a pulse generating circuit according to a first control signal;

counting the detection time of the detection signal by a counter; and

the detection circuit generates the data adjusting signal according to a counting result of the counter.

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