This application claims the benefit of Chinese Patent Application No. 201510435690.8 filed on Jul. 22, 2015 and entitled “GOA UNIT DRIVING CIRCUITS AND DRIVING METHOD THEREOF, DISPLAY PANELS AND DISPLAY DEVICES,” which is incorporated herein by reference in entirety.
The present disclosure relates to a display technique, especially to GOA unit driving circuits and driving methods thereof, display panels and display devices.
GOA (Gate Driver on Array) technology is a technology that integrates a gate driving circuit of a display device on an array substrate to form a plurality of GOA units, thereby saving material cost and space for additionally providing gate driving circuit. Thus, the GOA technology is widely used due to its advantages of decreasing production costs and power consumption and being suitable for achieving narrow frame of the display device.
The GOA unit driving circuit is used to drive a plurality of GOA units inside the GOA unit driving circuit, an input terminal of each GOA unit is connected to all clock signal terminals, and an output end of each GOA unit is connected to one gate line to realize a function of gate line scanning. For example, as shown in
It is an object of the present disclosure to provide a GOA unit driving circuit and a driving method thereof, a display panel and a display device for reducing electric power consumed by the parasitic capacitance in the display device, thereby reducing the power consumption of the display device.
In order to achieve the above objects, the present disclosure provides the following technical solutions.
In a first aspect, the present disclosure provides a gate driver on array (GOA) unit driving circuit. The GOA unit driving circuit comprises: a plurality of sets of GOA units, each of which includes at least one GOA unit; a plurality of clock selecting units, which are in one-to-one correspondence with the plurality of sets of GOA units, and each clock selecting unit is connected to a corresponding set of GOA units and connected to one of a plurality of clock signal terminals and at least one of a plurality of clock selection signal terminals, respectively, wherein an intersection of any two sets of GOA units in the plurality of sets of GOA unit is an empty set, and each clock selecting unit transmits a signal of the clock signal terminal to which the clock selecting unit is connected to the corresponding set of GOA units, under control of a signal of the at least one clock selection signal terminal to which the clock selecting unit is connected.
In a second aspect, the present disclosure provides a method for driving the GOA unit driving circuit as mentioned above. The method comprises: receiving a clock selection signal from a clock selection signal terminal and a clock signal from a clock signal terminal; and transmitting the clock signal to the set of GOA units according to the clock selection signal.
In a third aspect, the present disclosure provides a display panel. The display panel comprises the GOA unit driving circuit as mentioned above.
In a fourth aspect, the present disclosure provides a display device. The display device comprises the display panel as mentioned above.
The drawings described herein are provided to further understand the present disclosure and constitutes a part of the present disclosure. The schematic embodiments of the present disclosure and their explanations are to interpret the present disclosure and are not intended to improperly define the present disclosure. In the accompany drawings:
In order to further explain the GOA unit driving circuit, the driving method, the display panel, and the display device according to the embodiments of the present disclosure, the following will be described in detail with reference to the accompanying drawings.
First Embodiment
The GOA unit driving circuit provided by the embodiment of the present disclosure comprises a plurality of clock signal terminals, a plurality of clock selection signal terminals, a plurality of clock selecting units and a plurality of sets of Gate Driver on Array (GOA) units. Each set of GOA units includes at least one GOA unit. Each clock selecting unit is connected to one clock signal terminal, at least one clock signal terminal selection terminal and one set of GOA units. An intersection of the sets of GOA units respectively connected to any two of clock selecting units is an empty set, i.e. the sets of GOA units connected to any two of the clock selecting units do not contain any common GOA units. For example, the GOA unit driving circuit includes four GOA units, namely, GOA unit a, GOA unit b, GOA unit c and GOA unit d, which are divided into two sets of GOA units. The first set of GOA units includes GOA unit a and GOA unit b, and the second set of GOA units includes GOA unit c and GOA unit d. There will never be a case where the first set of GOA units includes the GOA unit a and the second set of GOA units also includes the GOA unit a. The embodiment of the present disclosure divides all of the GOA units in the GOA unit driving circuit into several groups. Each of the groups constitutes one set of GOA units, and the GOA units in different sets of GOA units are different from each other. It should be noted that the number of GOA units in different sets of GOA units may be the same or different. The clock selecting unit transmits signals of the clock signal terminals to the sets of GOA units in a time division manner under control of the signal of the clock selection signal terminals.
As compared with the conventional GOA unit driving circuit in which the signals of the clock signal terminals are simultaneously received by all of the GOA units, the GOA unit driving circuit in the embodiment of the present disclosure would be able to reduce the power consumption of the display device. For example, the GOA unit driving circuit includes one hundred GOA units, which are divided into five sets of GOA units and each set of the GOA units includes twenty GOA units. Under control of respective clock selecting units, the five sets of GOA units receive the signal of the clock signal terminal in a time division manner, respectively. During a time period t1, only the first set of GOA units can receive the signal of the clock signal terminal. During a time period t2, only the second set of GOA units can receive the signal of the clock signal terminal. During a time period t3, only the third set of GOA units can receive the signal of the clock signal terminal. During a time period t4, only the fourth set of GOA units can receive the signal of the clock signal terminal. During a time period t5, only the fifth set of GOA units can receive the signal of the clock signal terminal. That is, only ⅕ of the GOA units can receive the signal of the clock signal terminal each time, which means the power consumption reduces 80%.
Referring to
Referring to
A method for driving the GOA unit driving circuit will be described in conjunction with the structure of the above-described GOA unit driving circuit. The clock selecting unit in the GOA unit driving circuit receives the signal of the clock selection signal terminal and the signal of the clock signal terminal, and transmits the signal of the clock signal terminal to the set of GOA units to which the clock selecting unit itself is connected according to the signal of the clock selection signal terminal. For example and by referring to
It should be noted that two clock signal terminals are particularly taken as an example, but in an actual design, the number of the clock signal terminals may be three, four, six, eight or other numbers.
In the GOA unit driving circuit and its driving method, the display panel and the display device provided by the present disclosure, the GOA unit driving circuit comprises a plurality of clock signal terminals, a plurality of clock selection signal terminals, a plurality of clock selecting units and a plurality of sets of GOA units. Each set of the GOA units comprises at least one GOA unit, and each of the clock selecting units is connected to a clock signal terminal, at least one clock selection signal terminal and a set of GOA units. As compared with the GOA unit driving circuit of the priory art in which each of the GOA units is directly connected to all of the clock signal terminals, the present disclosure divides all of the GOA units in the GOA unit driving circuit into a plurality of sets of GOA units, and the clock selecting unit in the GOA unit driving circuit is able to transmit signals at the clock signal terminal to the set of GOA units in a time division manner under control of the signal at the clock selection signal terminal, so that during a certain time period, only a group of the GOA units among all GOA units receive signals at the clock signal terminals, that is, the number of the GOA unit that receives the signal at the clock signal terminal within the certain time period is reduced, thereby reducing parasitic capacitance to be charged and discharged, reducing power consumed by the parasitic capacitance, and reducing power consumption of the display device. Meanwhile, since the noise may be introduced by charge and discharge of the parasitic capacitance, the GOA unit driving circuit of the embodiment of the present disclosure reduces parasitic capacitance to be charged and discharged, thereby reducing the noise introduced to the display device and improving display effect of the display device.
Second Embodiment
Referring to
Referring to
Third Embodiment
Referring to
Referring to
Fourth Embodiment
The embodiment of the present disclosure provides a display panel including a GOA unit driving circuit in the above mentioned embodiments. The GOA unit driving circuit in the display panel has the same advantages as those of the GOA unit driving circuit in the above mentioned embodiments, so description thereof is omitted for brevity.
Fifth Embodiment
The embodiment of the present disclosure also provides a display device including a display panel in the above mentioned embodiments. The display panel in the display device has the same advantages as the display panel in the above-described embodiment, so description thereof is omitted for brevity. Specifically, the display device may be any products or components having a display function, such as liquid crystal display panel, an OLED (Organic Light Emitting Diode) panel, an electronic paper, a mobile phone, a tablet computer, a television set, a display, a notebook computer, a digital photo frame or the like.
In the GOA unit driving circuit and its driving method, the display panel and the display device provided by the present disclosure, the GOA unit driving circuit comprises a plurality of clock signal terminals, a plurality of clock selection signal terminals, a plurality of clock selecting units and a plurality of sets of GOA units. Each set of the GOA units comprises at least one GOA unit, and each of the clock selecting units is connected to a clock signal terminal, at least one clock selection signal terminal and a set of GOA units. As compared with the GOA unit driving circuit of the priory art in which each of the GOA units is directly connected to all of the clock signal terminals, the present disclosure divides all of the GOA units in the GOA unit driving circuit into a plurality of sets of GOA units, and the clock selecting unit in the GOA unit driving circuit is able to transmit signals at the clock signal terminal to the set of GOA units in a time division manner under control of the signal at the clock selection signal terminal, so that during a certain time period, only a part of the GOA units among all GOA units receive signals at the clock signal terminals, that is, the number of the GOA unit that receives the signal at the clock signal terminal within the certain time period is reduced, thereby reducing parasitic capacitance to be charged and discharged, reducing power consumed by the parasitic capacitance, and reducing power consumption of the display device.
In the description of the above-described embodiments, particular features, structures, materials, or characteristics may be combined in any one or more embodiments or examples in a suitable manner.
While the disclosure has been described in detail, it should be understood that the disclosure is not limited to the disclosed embodiments, but may be readily understood by those skilled in the art to which the present disclosure pertains, without departing from the scope of the disclosure and is intended to be within the scope of the present disclosure. Accordingly, the scope of protection of the present disclosure should be determined by the scope of the claims.
Number | Date | Country | Kind |
---|---|---|---|
2015 1 0435690 | Jul 2015 | CN | national |
Filing Document | Filing Date | Country | Kind |
---|---|---|---|
PCT/CN2015/097258 | 12/14/2015 | WO | 00 |
Publishing Document | Publishing Date | Country | Kind |
---|---|---|---|
WO2017/012255 | 1/26/2017 | WO | A |
Number | Name | Date | Kind |
---|---|---|---|
9368230 | Yao | Jun 2016 | B2 |
10147394 | Song | Dec 2018 | B2 |
20040252094 | Shih et al. | Dec 2004 | A1 |
20080238897 | Kimura | Oct 2008 | A1 |
20150154927 | Li | Jun 2015 | A1 |
20160259455 | Li | Sep 2016 | A1 |
20160358586 | Song | Dec 2016 | A1 |
20160372078 | Song | Dec 2016 | A1 |
Number | Date | Country |
---|---|---|
101950545 | Jan 2011 | CN |
1011950545 | Jan 2011 | CN |
103258514 | Aug 2013 | CN |
103744206 | Apr 2014 | CN |
104575353 | Apr 2015 | CN |
104599657 | May 2015 | CN |
20070000984 | Jan 2007 | KR |
Entry |
---|
International Search Report and Written Opinion (including English translation of Box V.) dated Apr. 26, 2016, for corresponding PCT Application No. PCT/CN2015/097258. |
First Chinese Office Action, for Chinese Patent Application No. 201510435690.8, dated Jun. 2, 2017, 9 pages. |
Second Chinese Office Action, for Chinese Patent Application No. 201510435690.8, dated Nov. 16, 2017, 10 pages. |
Number | Date | Country | |
---|---|---|---|
20170213497 A1 | Jul 2017 | US |