CN105161046B - A kind of display panel, its driving method and display device - Google Patents
A kind of display panel, its driving method and display device Download PDFInfo
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- CN105161046B CN105161046B CN201510694457.1A CN201510694457A CN105161046B CN 105161046 B CN105161046 B CN 105161046B CN 201510694457 A CN201510694457 A CN 201510694457A CN 105161046 B CN105161046 B CN 105161046B
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Abstract
The invention discloses a kind of display panel, its driving method and display device, in the display panel in addition to two grid lines of head and the tail, remaining each grid line at most has one end to be connected with the outermost pin of grid drive chip, i.e. the grid drive chip at grid line both ends uses asymmetrical formal distribution, the difference for being used for connecting resistance between grid line and each cabling of grid drive chip pin can so be reduced as far as possible, so as to reduce the difference for the scanning signal for being input to each grid line.It can realize simultaneously after the completion of the grid drive chip scanning of grid line one end, other end of grid drive chip is also in the function of sweep phase, i.e. the grid drive chip at grid line both ends is without switching simultaneously, and then it can avoid due to supply voltage sudden change difference caused by grid line both ends neighboring gates driving chip while switching, reduce the difference for the scanning signal for being input to each grid line, so as to improve the phenomenon of the split screen of display panel appearance and display picture brightness irregularities.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel, a driving method thereof and a display device.
Background
As is well known, flat panel displays have many advantages that are incomparable with other displays, such as low power consumption, small size, light weight, ultra-thin screen, etc., and are widely used in smart instruments, meters and low power consumption electronic products controlled by a single chip microcomputer in recent years. A display panel for implementing a display function requires control of a driving Integrated Circuit (IC) to implement functions of progressive scanning and frame-by-frame refreshing, so that image data input to the display panel can be refreshed in real time, thereby implementing dynamic display. The gate driver IC is responsible for realizing progressive scanning, generates scanning signals of gate lines that are turned on line by line for timing control, and loads the scanning signals to the corresponding gate lines.
The method for driving the display panel by the gate driver IC to scan line by line can be divided into single-side driving and double-side driving, in the double-side driving method, theoretically, the scanning signals input to each gate line are the same, but actually, because the lengths of the wires connecting each gate line and the corresponding pins of the gate driver IC are different, the impedances are different, and the scanning signals input to different gate lines still have a certain difference; as shown in fig. 1, at the junction (the region marked by the dashed-line frame m) of two adjacent gate driver ICs inputting scan signals to gate lines, due to the switching of the loads of the gate driver ICs, a sudden difference occurs in the power voltage signals, and further, the scan signals input to the gate lines are different, because each gate driver IC needs a higher current when being started, two gate lines connected to the junction of two adjacent gate driver ICs will cause a sudden difference in the power voltage due to the switching of the gate driver ICs, and further, the scan signals input to the gate lines will differ, thereby causing the phenomena of screen splitting and uneven brightness of the display screen of the display panel, and affecting the display effect of the display panel.
Therefore, how to improve the phenomena of split screen and uneven display screen brightness of the display panel is an urgent technical problem to be solved by those skilled in the art.
Disclosure of Invention
The embodiment of the invention provides a display panel, a driving method thereof and a display device, which are used for solving the problems of split screen and uneven display picture brightness of the display panel in the prior art.
An embodiment of the present invention provides a display panel, including: a plurality of gate lines and a plurality of gate driving chips for inputting scan signals to the gate lines; wherein,
the grid driving chips are distributed at two ends of the grid line; one end of each grid line is connected with the corresponding pin of the grid driving chip distributed at one end of the grid line through the corresponding routing, and the other end of each grid line is connected with the corresponding pin of the grid driving chip distributed at the other end of the grid line through the corresponding routing;
except the head and the tail of the two grid lines, at most one end of each of the rest grid lines is correspondingly connected with the outermost side pin of the grid driving chip.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the gate driving chips include two kinds of gate driving chips having N pins and N/2 pins; the grid driving chips with N/2 pins are uniformly distributed at the same end of the grid line; where N is an even number greater than 1.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the display panel includes two gate driving chips having N/2 pins; one of the gate driving chips with N/2 pins is connected with one end of first to N/2 grid lines of the display panel through a routing, and the other gate driving chip with N/2 pins is connected with the same end of the N/2 grid lines at the tail of the display panel through a routing.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the gate driving chips include two kinds of gate driving chips having N pins and N/2 pins; a grid driving chip with N/2 pins is respectively arranged at two ends of the grid line; where N is an even number greater than 1.
In a possible implementation manner, in the display panel provided in the embodiment of the present invention, the display panel includes two gate driver chips having N/2 pins, one of the gate driver chips having N/2 pins is connected to one end of first to N/2 th gate lines of the display panel through a trace, and the other gate driver chip having N/2 pins is connected to the other end of the N/2 th gate line at the end of the display panel through a trace.
An embodiment of the present invention provides a method for driving the display panel, including:
in the process of line-by-line scanning of the display panel, when the gate driving chip at one end of the gate line is switched, the gate driving chip at the other end of the gate line is in a non-switching state.
The embodiment of the invention provides a display device which comprises the display panel provided by the embodiment of the invention.
The embodiment of the invention has the beneficial effects that:
the embodiment of the invention provides a display panel, a driving method thereof and a display device, wherein the display panel comprises: a plurality of gate lines and a plurality of gate driving chips for inputting scan signals to the gate lines; the grid driving chips are distributed at two ends of the grid line; one end of each grid line is connected with the corresponding pin of the grid driving chip distributed at one end of the grid line through the corresponding routing, and the other end of each grid line is connected with the corresponding pin of the grid driving chip distributed at the other end of the grid line through the corresponding routing; except the head and tail two grid lines, at most one end of each of the rest grid lines is correspondingly connected with the outermost side pin of the grid driving chip. Therefore, the grid driving chips distributed at two ends of the grid lines can be arranged in an asymmetric mode, namely, except for the head and the tail of the grid lines, all the other grid lines have at most one end connected with the outermost pin of the grid driving chip, preferably, most of the grid lines can be arranged in a mode that one end is connected with the pin in the middle area of the grid driving chip, and the other end is connected with the pin in the edge area of the grid driving chip. Meanwhile, the gate driving chips at two ends of the gate line are arranged in an asymmetric mode, so that the gate driving chips at the other ends are still in the scanning stage after the gate driving chips at one ends of the gate line are scanned, namely the gate driving chips at two ends of the gate line are not switched simultaneously, the sudden change difference of power supply voltage caused by the simultaneous switching of the adjacent gate driving chips at two ends of the gate line can be avoided, the difference of scanning signals input to the gate lines is reduced, and the phenomena of screen splitting and uneven display picture brightness of the display panel can be improved.
Drawings
FIG. 1 is a schematic diagram of a display panel in the prior art;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 3 is a second schematic structural diagram of a display panel according to an embodiment of the invention.
Detailed Description
Embodiments of a display panel, a driving method thereof, and a display device according to embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
An embodiment of the present invention provides a display panel, as shown in fig. 2, which may include: a plurality of gate lines 01 and a plurality of gate driving chips 02 for inputting scan signals to the gate lines 01; wherein, a plurality of grid driving chips 02 are distributed at two ends of the grid line; one end of each grid line 01 is connected with the corresponding pin of the grid driving chip 02 distributed at one end of the grid line 01 through the corresponding wire, and the other end is connected with the corresponding pin of the grid driving chip 02 distributed at the other end of the grid line 01 through the corresponding wire; except the head and tail two grid lines 01, at most one end of each of the rest grid lines 01 is correspondingly connected with the outermost side pin of the grid driving chip 02.
In the display panel provided in the embodiment of the present invention, the gate driver chips distributed at two ends of the gate lines may be asymmetrically arranged, that is, except for the first and last gate lines, at most one end of each of the remaining gate lines is connected to the outermost pin of the gate driver chip, as shown in fig. 2, preferably, most of the gate lines may be arranged such that one end of each of the gate lines is connected to the pin in the middle area of the gate driver chip and the other end of each of the gate lines is connected to the pin in the edge area of the gate driver chip, so that the difference in resistance between the wires connecting the gate lines to the pins of the gate driver chip may be minimized, and the difference in resistance between different wires correspondingly connected to each of the gate driver chips and each of the gate lines may be nearly zero, thereby reducing the difference in. Meanwhile, the gate driving chips at two ends of the gate line are arranged in an asymmetric mode, so that the gate driving chips at the other ends are still in the scanning stage after the gate driving chips at one ends of the gate line are scanned, namely the gate driving chips at two ends of the gate line are not switched simultaneously, the sudden change difference of power supply voltage caused by the simultaneous switching of the adjacent gate driving chips at two ends of the gate line can be avoided, the difference of scanning signals input to the gate lines is reduced, and the phenomena of screen splitting and uneven display picture brightness of the display panel can be improved.
In specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, the gate driving chip may include two kinds of gate driving chips 02 having N pins and N/2 pins; the grid driving chips 02 with N/2 pins are distributed at the same end of the grid line 01; where N is an even number greater than 1. Specifically, in the display panel provided in the embodiment of the present invention, the gate driver chip may include two types, i.e., N/2 pins, such that the gate driver chip with N/2 pins may be disposed at the same end of the gate line, i.e., the gate driver chip with N/2 pins is connected to the end of the gate line at the same side, as shown in fig. 2, the gate driver chips with N/2 pins are uniformly distributed in the area pointed by the left end of the gate line, and the gate driver chip with N pins is disposed in the area pointed by the right end of the gate line, so that the gate driver chips at the two ends of the gate line are disposed in an asymmetric distribution manner, and when the display panel scans line by line, the gate driver chip at one end of the gate line and the gate driver chip at the other end of the gate line may be switched in a time-sharing manner, thereby avoiding voltage jump caused by simultaneous switching of the gate driver chips at the, and thus, it is possible to prevent a difference in the scan signals input to the gate lines due to a voltage difference.
In specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, the display panel may include two gate driver chips having N/2 pins; one of the gate driving chips with N/2 pins is connected with one end of first to N/2 grid lines 01 of the display panel through a routing, and the other gate driving chip with N/2 pins is connected with the same end of the N/2 grid lines 01 at the tail of the display panel through a routing. Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, assuming that the display panel scans in the forward direction, the topmost gate line is the first gate line, two gate driver chips with N/2 pins are distributed in the region pointed by the left end of the gate line, one of the gate driver chips with N/2 pins is connected to one end of the first to N/2 th gate lines 01 of the display panel, and the other gate driver chip with N/2 pins is connected to the same end of the N/2 gate lines 01 at the end of the display panel. Two grid driving chips with N/2 pins are respectively arranged at the first and the last in the area pointed by one end of the grid line, a plurality of grid driving chips with N pins can be arranged in the middle, and finally, one end of each grid line is correspondingly connected with the pin of each grid driving chip; meanwhile, the other end of the grid line is provided with a plurality of N pins, the pins of the grid driving chips with the N pins are correspondingly connected with the other end of each grid line, normal driving scanning of the display panel is guaranteed, meanwhile, asymmetric distribution of the grid driving chips at two ends of the grid line can be achieved, the grid driving chips at one end of the grid line and the grid driving chips at the other end can be switched in a time-sharing mode, voltage mutation caused by simultaneous switching of the grid driving chips at two ends of the grid line is avoided, and then difference of scanning signals input to each grid line due to voltage difference can be avoided.
In specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 3, the gate driving chip may include two kinds of gate driving chips 02 having N pins and N/2 pins; the gate driving chips 02 having N/2 pins are respectively disposed at two ends of the gate line 01; where N is an even number greater than 1. Specifically, in the display panel provided in the embodiment of the present invention, the gate driver chips include two types, i.e., N pins and N/2 pins, so that the gate driver chips with N/2 pins can be respectively disposed at two ends of the gate line, and the gate driver chips at two ends of the gate line are disposed in an asymmetric arrangement manner, as shown in fig. 3, one gate driver chip with N/2 pins is disposed in a region pointed by the left end of the gate line, the other gate driver chip with N/2 pins is disposed in a region pointed by the right end of the gate line, and the two gate driver chips with N/2 pins are disposed in a staggered manner, i.e., the two gate driver chips with N/2 pins are asymmetrically disposed at two ends of the gate line, so that the gate driver chips at two ends of the gate line can form an asymmetric arrangement manner, therefore, when the display panel scans line by line, the grid driving chip at one end of the grid line and the grid driving chip at the other end of the grid line can be switched in a time-sharing manner, so that voltage sudden change caused by switching of the grid driving chips is avoided, and further, the difference of scanning signals input to the grid line due to voltage difference can be avoided.
In specific implementation, as shown in fig. 3, the display panel provided in the embodiment of the present invention may include two gate driver chips 02 having N/2 pins, where one of the gate driver chips 02 having N/2 pins is connected to one end of first to N/2 th gate lines 01 of the display panel through a trace, and the other gate driver chip 02 having N/2 pins is connected to the other end of the last N/2 gate lines 01 of the display panel through a trace. Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 3, assuming that the display panel scans in the forward direction, the topmost gate line is the first gate line, and two gate driver chips with N/2 pins are respectively distributed in the regions pointed by the left and right ends of the gate line, for example, the first gate driver chip with N/2 pins is distributed in the first region pointed by the left end of the gate line, the other gate driver chip with N/2 pins is arranged in the last region pointed by the right end of the gate line, and a plurality of gate driver chips with N pins are arranged at other positions at the two ends of the gate line, so that the gate lines are correspondingly connected to the pins of the gate driver chips, thereby achieving normal driving scanning of the display panel, and simultaneously achieving asymmetric distribution of the gate driver chips at the two ends of the gate lines, so that the gate driver chips at one end of the gate lines can be switched with the gate driver chips at the other end of the gate, the voltage sudden change caused by the simultaneous switching of the grid driving chips at the two ends of the grid line is avoided, and the difference of scanning signals input to the grid lines due to voltage difference can be further avoided.
Based on the same inventive concept, an embodiment of the present invention provides a driving method of the display panel, which specifically includes: in the process of line-by-line scanning of the display panel, when the gate driving chip at one end of the gate line is switched, the gate driving chip at the other end of the gate line is in a non-switching state. Specifically, in the driving method of the display panel provided in the embodiment of the present invention, when the display panel is normally driven and scanned, due to the asymmetric distribution of the gate driver chips at the two ends of the gate line, the gate driver chips at one end of the gate line and the gate driver chips at the other end of the gate line can be switched in a time-sharing manner, so as to avoid voltage jump caused by simultaneous switching of the gate driver chips at the two ends of the gate line, and further avoid difference of scanning signals input to each gate line due to voltage difference.
Based on the same inventive concept, an embodiment of the present invention provides a display device, including the display panel provided in the embodiment of the present invention. The display device may be: any product or component with a display function, such as a mobile phone, a tablet computer, a television, a display, a notebook computer, a digital photo frame, a navigator and the like. Since the principle of the display device to solve the problem is similar to that of the display panel, the display device can be implemented by the display panel, and repeated descriptions are omitted.
The embodiment of the invention provides a display panel, a driving method thereof and a display device, wherein the display panel comprises: a plurality of gate lines and a plurality of gate driving chips for inputting scan signals to the gate lines; the grid driving chips are distributed at two ends of the grid line; one end of each grid line is connected with the corresponding pin of the grid driving chip distributed at one end of the grid line through the corresponding routing, and the other end of each grid line is connected with the corresponding pin of the grid driving chip distributed at the other end of the grid line through the corresponding routing; except the head and tail two grid lines, at most one end of each of the rest grid lines is correspondingly connected with the outermost side pin of the grid driving chip. Therefore, the grid driving chips distributed at two ends of the grid lines can be arranged in an asymmetric mode, namely, except for the head and the tail of the grid lines, all the other grid lines have at most one end connected with the outermost pin of the grid driving chip, preferably, most of the grid lines can be arranged in a mode that one end is connected with the pin in the middle area of the grid driving chip, and the other end is connected with the pin in the edge area of the grid driving chip. Meanwhile, the gate drive chips at the two ends of the gate line are arranged in an asymmetric mode, so that the gate drive chips at the other ends are still in the scanning stage after the gate drive chips at one end of the gate line are scanned, namely the gate drive chips at the two ends of the gate line are not switched simultaneously, the sudden change difference of power supply voltage caused by the simultaneous switching of the adjacent gate drive chips at the two ends of the gate line can be avoided, the difference of scanning signals input to the gate lines is reduced, and the phenomena of screen splitting and uneven brightness of display pictures of the display panel can be improved
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (5)
1. A display panel, comprising: a plurality of gate lines and a plurality of gate driving chips for inputting scan signals to the gate lines; wherein,
the grid driving chips are distributed at two ends of the grid line; one end of each grid line is connected with the corresponding pin of the grid driving chip distributed at one end of the grid line through the corresponding routing, and the other end of each grid line is connected with the corresponding pin of the grid driving chip distributed at the other end of the grid line through the corresponding routing;
except the head and the tail of the two grid lines, at most one end of each of the rest grid lines is correspondingly connected with the outermost side pin of the grid driving chip;
the gate driving chip comprises two kinds of gate driving chips with N pins and N/2 pins; the grid driving chips with N/2 pins are uniformly distributed at the same end of the grid line; wherein N is an even number greater than 1; or,
the gate driving chip comprises two kinds of gate driving chips with N pins and N/2 pins; a grid driving chip with N/2 pins is respectively arranged at two ends of the grid line; where N is an even number greater than 1.
2. The display panel according to claim 1, wherein the display panel includes two gate driving chips having N/2 pins; one of the gate driving chips with N/2 pins is connected with one end of first to N/2 grid lines of the display panel through a routing, and the other gate driving chip with N/2 pins is connected with the same end of the N/2 grid lines at the tail of the display panel through a routing.
3. The display panel according to claim 1, wherein the display panel includes two gate driving chips having N/2 pins, one of the gate driving chips having N/2 pins is connected to one end of first to N/2 gate lines of the display panel through a trace, and the other gate driving chip having N/2 pins is connected to the other end of the last N/2 gate lines of the display panel through a trace.
4. A driving method of the display panel according to any one of claims 1 to 3, comprising:
in the process of line-by-line scanning of the display panel, when the gate driving chip at one end of the gate line is switched, the gate driving chip at the other end of the gate line is in a non-switching state.
5. A display device characterized by comprising the display panel according to any one of claims 1 to 3.
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| CN201510694457.1A CN105161046B (en) | 2015-10-23 | 2015-10-23 | A kind of display panel, its driving method and display device |
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| CN105609070B (en) * | 2016-01-04 | 2018-06-05 | 重庆京东方光电科技有限公司 | A kind of display device and its driving method |
| CN105528987B (en) * | 2016-02-04 | 2018-03-27 | 重庆京东方光电科技有限公司 | Gate driving circuit and its driving method and display device |
| US10311820B2 (en) | 2017-09-13 | 2019-06-04 | Shenzhen China Star Optoelectronics Technology Co., Ltd | Over current protection circuit and liquid crystal display |
| CN107342060B (en) * | 2017-09-13 | 2019-12-27 | 京东方科技集团股份有限公司 | Drive chip and display device |
| CN107395006B (en) * | 2017-09-13 | 2020-07-03 | 深圳市华星光电技术有限公司 | Overcurrent protection circuit and liquid crystal display |
| CN113380211B (en) * | 2021-06-28 | 2022-10-28 | 厦门天马微电子有限公司 | Display panel, driving method thereof and display device |
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