CN111223430B - Driving circuit and driving method thereof - Google Patents

Driving circuit and driving method thereof Download PDF

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CN111223430B
CN111223430B CN201911040917.3A CN201911040917A CN111223430B CN 111223430 B CN111223430 B CN 111223430B CN 201911040917 A CN201911040917 A CN 201911040917A CN 111223430 B CN111223430 B CN 111223430B
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circuit
detection
signal
data
transmission channel
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CN111223430A (en
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郑婉羚
王宏祺
陈雅芳
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AUO Corp
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AU Optronics Corp
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    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters

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Abstract

一种驱动电路及其驱动方法。驱动电路包括检测电路以及传送电路。检测电路用以产生检测信号至传输通道,并依据检测信号的检测时间以检测传输通道的通道长度,且检测电路依据检测时间以产生数据调整信号。传送电路耦接至检测电路。传送电路用以产生数据信号,并依据数据调整信号以调整数据信号的多个设定值。

Figure 201911040917

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.

Figure 201911040917

Description

驱动电路及其驱动方法Driving circuit and driving method thereof

技术领域technical field

本发明是有关于一种显示装置,且特别是有关于一种驱动电路及其驱动方法。The present invention relates to a display device, and more particularly, to a driving circuit and a driving method thereof.

背景技术Background technique

随着电子技术的进步,消费性电子产品已成为人们生活中必备的工具。为提供良好的人机介面,在消费性电子产品上配置高品质的显示装置也成为一个趋势。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.

在习知的显示技术中,时序控制器(Timing Controller)的驱动电路通常会通过多个传输通道来分别将数据信号传送至对应的源极驱动电路。然而,在习知技术中,由于时序控制器的驱动电路与各个源极驱动电路之间的传输通道的通道长度并不相同,使得设计者需要额外的根据不同的传输通道的通道长度来对所述数据信号中的多个设定值进行调整。在此情况下,习知技术在操作上较为耗时且较容易产生额外的人力成本。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.

发明内容SUMMARY OF THE INVENTION

本发明提供一种驱动电路及其驱动方法,可以使驱动电路通过检测电路的检测机制,以检测对应的传输通道的通道长度,藉以使传送电路能够自行依据检测电路的检测结果来调整数据信号的多个设定值,进而提升整体的工作效率且降低人力成本。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.

本发明的驱动电路包括检测电路以及传送电路。检测电路用以产生检测信号至传输通道,并依据检测信号的检测时间以检测传输通道的通道长度,且检测电路依据检测时间以产生数据调整信号。传送电路耦接至检测电路,传送电路用以产生数据信号,并依据数据调整信号以调整数据信号的多个设定值。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.

在本发明的驱动电路的驱动方法,包括:由检测电路产生检测信号至传输通道,并依据检测信号的检测时间以检测传输通道的通道长度,且由检测电路依据检测时间以产生数据调整信号。由传送电路产生数据信号,并依据数据调整信号以调整数据信号的多个设定值。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.

基于上述,本发明的驱动电路可以在检测时间区间时,通过检测电路的检测机制以获得对应的传输通道的通道长度,并依据通道长度(或检测信号的检测时间)来提供数据调整信号至传送电路。藉此,传送电路可以在正常显示时间时,依据数据调整信号来调整数据信号的多个设定值。如此一来,无论驱动电路与源极驱动电路之间的传输通道的通道长度为何,本发明的驱动电路可不需要通过额外的技术人员来根据不同的传输通道的通道长度以对所述数据信号中的多个设定值进行调整,进而提升整体的工作效率且降低人力成本。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.

以下结合附图和具体实施例对本发明进行详细描述,但不作为对本发明的限定。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.

附图说明Description of drawings

图1是依照本发明一实施例说明一种驱动电路的示意图。FIG. 1 is a schematic diagram illustrating a driving circuit according to an embodiment of the present invention.

图2是依照本发明图1实施例的检测电路以及源极驱动电路的示意图。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.

图3是依照本发明一实施例说明查找表的示意图。FIG. 3 is a schematic diagram illustrating a lookup table according to an embodiment of the present invention.

图4是依照本发明一实施例说明一种驱动电路的时序图。FIG. 4 is a timing diagram illustrating a driving circuit according to an embodiment of the present invention.

图5A是依照本发明图3所示的查找表中检测时间与数据信号的设定值之间的关系的示意图。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.

图5B是依照本发明图3所示的查找表中检测时间与通道长度之间的关系的示意图。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.

图6是依照本发明一实施例的驱动电路的驱动方法的流程图。FIG. 6 is a flowchart of a driving method of a driving circuit according to an embodiment of the present invention.

其中,附图标记:Among them, reference numerals:

100、100_1~100_N:驱动电路100, 100_1~100_N: drive circuit

110:检测电路110: Detection circuit

120:传送电路120: Transmission circuit

130:计数器130: Counter

140:脉冲产生电路140: Pulse generation circuit

150:查找表150: Lookup Table

200、200_1~200_N:源极驱动电路200, 200_1~200_N: source drive circuit

210:接收电路210: Receiver circuit

A、B、C:节点A, B, C: Nodes

CH、CH1~CHN:传输通道CH, CH1~CHN: Transmission channel

CS1、CS2、CS3:控制信号CS1, CS2, CS3: Control signals

DS:检测信号DS: Heartbeat

DAS:数据调整信号DAS: Data Adjustment Signal

EQ:等化系数EQ: Equalization Coefficient

GND:参考接地端GND: reference ground terminal

ISS:电流源ISS: Current Source

PEMP:预加重系数PEMP: Pre-emphasis factor

REF_CLK:参考时钟脉冲信号REF_CLK: reference clock pulse signal

RF:电阻RF: Resistance

SW1、SW2、SW3:切换开关SW1, SW2, SW3: toggle switch

SW:电压振幅电位SW: voltage amplitude potential

S610、S620:步骤S610, S620: Steps

T1:初始时间区间T1: Initial time interval

T2:检测时间区间T2: detection time interval

T3:正常显示时间区间T3: normal display time interval

TX:数据信号TX: data signal

TDS、TDS1、TDS2:检测时间TDS, TDS1, TDS2: Detection time

V11、V12、V21、V22:电压电位V11, V12, V21, V22: Voltage potential

具体实施方式Detailed ways

下面结合附图对本发明的结构原理和工作原理作具体的描述:Below in conjunction with accompanying drawing, structure principle and working principle of the present invention are described in detail:

在本发明的说明书全文(包括权利要求范围)中所使用的「耦接(或连接)」一词可指任何直接或间接的连接手段。举例而言,若文中描述第一装置耦接(或连接)于第二装置,则应该被解释成该第一装置可以直接连接于该第二装置,或者该第一装置可以通过其他装置或某种连接手段而间接地连接至该第二装置。另外,凡可能之处,在附图及实施方式中使用相同标号的元件/构件/步骤代表相同或类似部分。不同实施例中使用相同标号或使用相同用语的元件/构件/步骤可以相互参照相关说明。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.

图1是依照本发明一实施例说明一种驱动电路100的示意图。请参照图1,在本实施例中,驱动电路100包括检测电路110、传送电路120以及切换开关SW1。其中。驱动电路100可以耦接至传输通道CH,并且,传输通道CH可以耦接至源极驱动电路200。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 .

在图1所示的驱动电路100中,检测电路110耦接至传送电路120。切换开关SW1耦接于检测电路110、传送电路120以及传输通道CH之间。其中,切换开关SW1可以依据控制信号CS1的时序状态而切换于节点A以及节点B之间,藉以导通传送电路120与传输通道CH之间的数据传输路径或检测电路110与传输通道CH之间的数据传输路径。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.

需注意到的是,本实施例不限制驱动电路、传输通道以及源极驱动电路的数量。本领域具有通常知识者可以依照设计需求来决定驱动电路、传输通道以及源极驱动电路的数量。举例来说,在一些设计需求下,本实施例还可以包括多个驱动电路100_1~100_N、多个传输通道CH1~CHN以及多个源极驱动电路200_1~200_N。其中,驱动电路100_1~100_N、传输通道CH1~CHN以及源极驱动电路200_1~200_N之间的耦接方式以及作动关系皆相同于驱动电路100、传输通道CH以及源极驱动电路200。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 .

除此之外,在另一些设计需求下,本实施例亦可通过一个驱动电路100来耦接至多个传输通道CH、CH1~CHN,且这些传输通道CH、CH1~CHN再分别耦接至多个源极驱动电路200、200_1~200_N,以达到一个驱动电路100对多个源极驱动电路200、200_1~200_N的电路架构,其中上述的N为正整数。并且,在图1的实施例中,驱动电路100以及100_1~100_N可以被配置于时钟脉冲控制器(Timing Controller)中,以于所述时钟脉冲控制器中进行相关操作。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.

关于本实施例的驱动电路100的操作动作,具体而言,当驱动电路100操作于检测时间区间时,切换开关SW1可以依据控制信号CS1而切换至节点B,以导通检测电路110与传输通道CH之间的数据传输路径。在此同时,检测电路110可以通过传输通道CH以提供检测信号DS至源极驱动电路200,并依据检测信号DS的检测时间来获得传输通道CH的通道长度。接着,检测电路110可以依据所述检测信号DS的检测时间(或传输通道CH的通道长度)来提供数据调整信号DAS至传送电路120。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).

另一方面,当驱动电路100操作于正常显示区间时,切换开关SW1可以依据控制信号CS1而切换至节点A,以导通传送电路120与传输通道CH之间的数据传输路径。在此同时,传送电路120可以依据所述数据调整信号DAS以调整数据信号TX的多个设定值。接着,传送电路120可以通过传输通道CH以提供经调整的数据信号TX至对应的源极驱动电路200。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.

其中,图1所示的驱动电路100_1~100_N、传输通道CH1~CHN以及源极驱动电路200_1~200_N可以参照驱动电路100、传输通道CH以及源极驱动电路200的相关说明来类推,故不再赘述。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.

依据上述图1实施例的说明可以得知,驱动电路100可以在检测时间区间时,通过检测电路110的检测机制以获得对应的传输通道CH的通道长度,并依据所述通道长度(或检测信号DS的检测时间)来提供数据调整信号DAS至传送电路120。藉此,传送电路120可以在正常显示时间时,依据数据调整信号DAS来调整预传送至源极驱动电路200的数据信号TX的多个设定值。也就是说,无论驱动电路与源极驱动电路之间的传输通道的通道长度为何,本实施例的驱动电路皆可以根据检测电路所检测的结果来自行对应的调整数据信号的多个设定值,而不需要通过额外的技术人员来根据不同的传输通道的通道长度以对所述数据信号中的多个设定值进行调整,进而提升整体的工作效率且降低人力成本。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.

图2是依照本发明图1实施例的检测电路110以及源极驱动电路200的示意图。请参照图2,检测电路110可以包括计数器130以及脉冲产生电路140。计数器130耦接于传送电路120与脉冲产生电路140之间。脉冲产生电路140耦接于计数器130与节点B之间。其中,脉冲产生电路140可以包括电阻RF、切换开关SW3以及电流源ISS。电阻RF耦接于节点B与参考接地端GND之间,切换开关SW3耦接于节点B与电流源ISS之间,电流源ISS耦接于切换开关SW3与参考接地端GND之间。需注意到的是,在一些设计需求下,脉冲产生电路140可以是本领域具有通常知识者所熟知用以产生脉冲之脉冲产生电路,或是其它脉冲产生电路。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.

此外,请同时参照图2以及图3,图3是依照本发明一实施例说明查找表150的示意图。在本实施例中,查找表150可耦接至计数器130,其中,查找表150可用于记录传输通道CH的通道长度(或检测信号DS的检测时间)与数据信号TX的多个设定值(例如,数据信号TX的电压振幅电位(Swing Level)、预加重(Pre-emphasis)系数以及等化(Equalize)系数)的关系。在本实施例中,查找表150可内建于驱动电路100中,或者在其它设计需求下,查找表150也可外挂于驱动电路100之外,并与计数器130相互耦接。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 .

具体而言,脉冲产生电路140可用以依据控制信号CS3的时序状态来产生检测信号DS。举例来说,当切换开关SW3依据控制信号CS3而导通时,脉冲产生电路140可以依据电流源ISS所产生的电流以及电阻RF以产生检测信号DS。接着,计数器130可以依据参考时钟脉冲信号REF_CLK来对检测信号DS在检测时间区间时的检测时间进行计数。并且,检测电路110可以依据计数器130的计数结果(亦即检测信号DS的检测时间)来从查找表150中搜寻对应于数据信号TX的多个设定值,以对应的产生数据调整信号DAS。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.

另一方面,在图2所示的源极驱动电路200中,源极驱动电路200可以包括接收电路210以及切换开关SW2。接收电路210通过节点C以耦接至传输通道CH。切换开关SW2耦接于节点C与参考接地端GND之间。其中,源极驱动电路200可以依据控制信号CS2的时序状态来决定导通传输通道CH与接收电路210之间的数据传输路径或传输通道CH与参考接地端GND之间数据传输路径。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.

图4是依照本发明一实施例说明一种驱动电路100的时序图。请同时参照图1至图4,针对驱动电路100的操作细节,详细来说,当驱动电路100操作于初始时间区间T1时,控制信号CS1可以被设定至高电压电位(如,电压电位V11),以使切换开关SW1可以依据控制信号CS1而切换至节点A,并导通传送电路120与传输通道CH之间的数据传输路径。此外,控制信号CS2可以被设定至高电压电位(如,电压电位V21),以使切换开关SW2可依据控制信号CS2而被断开。换言之,在初始时间区间T1中,传送电路120、传输通道CH以及源极驱动电路200的接收电路210可以形成第一数据传输路径。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.

进一步来说,在初始时间区间T1中,传送电路120可以通过所述第一数据传输路径来提供数据信号TX至接收电路210,以使驱动电路100以及源极驱动电路200皆能够确认所述第一数据传输路径已形成。其中,本实施例的数据信号TX可以为差动信号,并且,当所数第一数据传输路径形成时,所述差动信号的正极性信号以及负极性信号可以被设定为高电压电位。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.

值得一提的是,当驱动电路100从初始时间区间T1切换至检测时间区间T2的过程中,控制信号CS2可以先被设定至低电压电位(如,电压电位V22),以使切换开关SW2可依据控制信号CS2而被导通。接着,当驱动电路100操作于检测时间区间T2时,控制信号CS1可以再被设定为低电压电位(如,电压电位V12),以使切换开关SW1可以依据控制信号CS1而切换至节点B,并导通检测电路110与传输通道CH之间的数据传输路径。在此同时,切换开关SW3可以依据被设定为致能状态的控制信号CS3而被导通,以使驱动电路100可以开始启动检测电路110的检测机制。换言之,在检测时间区间T2中,检测电路110、传输通道CH以及源极驱动电路200的参考接地端GND可以形成第二数据传输路径。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.

详细来说,在检测时间区间T2中,检测电路110可以通过所述第二数据传输路径,来将所产生的检测信号DS提供至源极驱动电路200的参考接地端GND。值得一提的是,在本实施例中,检测电路110可以将检测信号DS传送至源极驱动电路200的参考接地端GND的时间定义为检测时间TDS1。接着,当源极驱动电路200的参考接地端GND接收到检测信号DS之后,源极驱动电路200可以根据特性阻抗(characteristic impedance)之效应,来进一步的传送或反射反向的检测信号DS至检测电路110。其中,所述传送或反射反向的检测信号DS至检测电路110的时间可以定义为检测时间TDS2。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.

换言之,当驱动电路100与源极驱动电路200之间的传输通道CH的通道长度愈长时,检测电路110整体的检测时间TDS(亦即检测时间TDS1与TDS2的总和)会愈长,相对的,当驱动电路100与源极驱动电路200之间的传输通道CH的通道长度愈短时,检测电路110整体的检测时间TDS亦会愈短。亦即,传输通道CH的通道长度与检测时间TDS为正相关。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.

在此,请参照图5A,图5A是依照本发明图3所示的查找表150中检测时间TDS与数据信号TX的设定值之间的关系的示意图。在本实施例中,所述数据信号TX的多个设定值分别可以是数据信号TX的电压振幅电位SW、预加重系数PEMP以及等化系数EQ。其中,电压振幅电位SW可用以调整数据信号TX的直流电压电位;预加重系数PEMP可用以调整数据信号TX的切换速度(或上升沿以及下升沿的幅度);等化系数EQ可用以对数据信号TX进行等化,以优化数据信号TX。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.

请再次同时参照图1至图5A,当驱动电路100操作于检测时间区间T2时,计数器130可以开始对检测信号DS的检测时间TDS进行计数。并且,当计数器130的计数动作结束后,检测电路110可以依据计数器130的计数结果来从图5A中所示的查找表150中搜寻对应于数据信号TX的多个设定值(亦即数据信号TX的电压振幅电位SW、预加重系数PEMP以及等化系数EQ),以对应的产生符合这些设定值的数据调整信号DAS。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.

举例来说,假设计数器130的计数结果表示检测信号DS的检测时间TDS是介于5奈秒(ns)至6ns时,检测电路110可以依据所述检测时间TDS,来对应的产生符合数据信号TX的多个设定值(如,电压振幅电位SW为200毫伏(mV)、预加重系数PEMP为1.5分贝(dB)以及等化系数EQ为3dB)的数据调整信号DAS至传送电路120。需注意到的是,本领域具有通常知识者亦可依据设计需求以在查找表150中设定数据信号TX的其它设定值,本实施例并不限于此。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.

此外,请参照图5B,图5B是依照本发明图3所示的查找表中检测时间TDS与通道长度之间的关系的示意图。在本实施例中,检测电路110更可以依据计数器130的计数结果(亦即检测信号DS的检测时间TDS)来从图5B中所示的查找表150中获得对应的传输通道CH的通道长度。举例来说,假设计数器130的计数结果表示检测信号DS的检测时间TDS是12ns,则检测电路110可以通过查找表150来获得对应的传输通道CH的通道长度为11.8单位长度。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.

请返回参照图1至图4,当驱动电路100从检测时间区间T2切换至正常显示时间区间T3的过程中,数据信号TX(或差动信号)的正极性信号以及负极性信号可以先被设定为低电压电位。接着,当驱动电路100操作于正常显示时间区间T3时,控制信号CS1可以再次被设定至高电压电位(如,电压电位V11),以使切换开关SW1可以依据控制信号CS1而再次切换至节点A,并导通传送电路120与传输通道CH之间的数据传输路径。此外,控制信号CS2可以再次被设定至高电压电位(如,电压电位V21),以使切换开关SW2可依据控制信号CS2而被断开。换言之,在正常显示时间区间T3中,传送电路120、传输通道CH以及源极驱动电路200的接收电路210可以再次的形成第一数据传输路径。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.

具体来说,在正常显示时间区间T3中,传送电路120可以依据检测电路110所提供的数据调整信号DAS,来将数据信号TX的多个设定值进行调整与设定。举例来说,同样假设于检测时间区间T2时,计数器130的计数结果表示检测信号DS的检测时间TDS是介于5ns至6ns。在此情况下,在正常显示时间区间T3中,传送电路120可以依据数据调整信号DAS,来将数据信号TX的电压振幅电位SW调整为200mV,预加重系数PEMP调整为1.5dB,以及等化系数EQ调整为3dB。藉此,传送电路120可以通过所述第一数据传输路径,将经调整的数据信号TX传送至对应的源极驱动电路200。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.

换言之,无论驱动电路100与源极驱动电路200之间的传输通道CH的通道长度为何,本实施例的驱动电路100皆可以根据检测电路110所检测的结果来自行对应的调整数据信号TX的多个设定值,而不需要通过额外的技术人员来根据不同的传输通道CH的通道长度以对所述数据信号TX中的多个设定值进行调整,进而提升整体的工作效率且降低人力成本。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 .

图6是依照本发明一实施例的驱动电路100的驱动方法的流程图。请同时参照图1以及图6,在步骤S610中,驱动电路可以由检测电路产生检测信号至传输通道,并依据检测信号的检测时间以检测传输通道的通道长度,且由检测电路依据检测时间以产生数据调整信号。在步骤S620中,驱动电路可以由传送电路产生数据信号,并依据数据调整信号以调整数据信号的多个设定值。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.

关于各步骤的实施细节在前述的实施例及实施方式都有详尽的说明,在此恕不多赘述。The implementation details of each step have been described in detail in the foregoing embodiments and implementation manners, and will not be repeated here.

综上所述,本发明的驱动电路可以在检测时间区间时,通过检测电路的检测机制以获得对应的传输通道的通道长度,并依据通道长度(或检测信号的检测时间)来提供数据调整信号至传送电路。藉此,传送电路可以在正常显示时间时,依据数据调整信号来调整数据信号的多个设定值。如此一来,无论驱动电路与源极驱动电路之间的传输通道的通道长度为何,本发明的驱动电路可不需要通过额外的技术人员来根据不同的传输通道的通道长度以对所述数据信号中的多个设定值进行调整,进而提升整体的工作效率且降低人力成本。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.

当然,本发明还可有其它多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。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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