CN106847158B - Display panel, driving method thereof and display device - Google Patents
Display panel, driving method thereof and display device Download PDFInfo
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- CN106847158B CN106847158B CN201710202455.5A CN201710202455A CN106847158B CN 106847158 B CN106847158 B CN 106847158B CN 201710202455 A CN201710202455 A CN 201710202455A CN 106847158 B CN106847158 B CN 106847158B
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- G09G3/20—Control 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
The invention discloses a display panel, a driving method thereof and a display device, wherein when the display panel displays a static picture, all driving submodules input scanning signals to corresponding grid lines based on low-frequency clock signals output by clock signal lines, and the normal driving scanning of the display panel is kept; when the display panel carries out dynamic display, the driving sub-modules correspondingly driving the dynamic pictures input scanning signals to corresponding grid lines based on high-frequency clock signals output by the clock signal lines so as to ensure the smoothness of the dynamic pictures, and the other driving sub-modules keep inputting the scanning signals of the static pictures to the corresponding grid lines. Therefore, when the display panel carries out dynamic display, only part of the driving submodules input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, namely, part of the driving submodules of the display panel are in a high-frequency working state, and carry out high-frequency working relative to the whole display panel, so that the power consumption of the display panel can be effectively reduced.
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
At present, display technologies are widely applied to televisions, mobile phones, and public information displays, and flat panel displays for displaying pictures are widely popularized due to their advantages of being ultra-thin and energy-saving. With the continuous development of the communication industry, the functions of display products are more and more powerful, and the original single display function is comprehensively evolved to the directions of voice, data, images, music and multimedia. As the display products become more and more powerful, the power consumption thereof also becomes larger and larger. Therefore, reducing the power consumption of the display product and thus improving the market competitiveness of the display product has become a trend of the development of the display product.
In the prior art, the technology of reducing power consumption of the display panel is mainly realized by reducing the refresh frequency. For example, metal oxide semiconductor technology, that is, metal oxide such as indium gallium zinc oxide IGZO is used to replace the conventional amorphous silicon to fabricate the active layer, so as to reduce the off-state current of the display device to reduce the frame frequency, which can be reduced to 1 hz; in addition, the frame rate can be greatly reduced by latching voltages in the pixels through the MIP (MIP) technology. However, although the low power consumption display products using the above two technologies can greatly reduce the frame rate of the display panel, the scheme of reducing the frame rate is only suitable for the display panel to display a static picture, and when the display panel displays a dynamic or even a local dynamic picture, the frame rate of the display panel will rise to the level of a common display panel, and the purpose of reducing the power consumption of the display products cannot be effectively achieved.
Therefore, how to reduce the power consumption of the display panel during dynamic display so as to effectively reduce the power consumption of the display product is a technical problem to be solved urgently 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 problem of higher power consumption when the display panel performs dynamic display in the prior art.
An embodiment of the present invention provides a display panel, including: the display device comprises a plurality of grid lines positioned in a display area, a grid driving unit positioned in a peripheral area and used for providing scanning signals for the grid lines, and a clock signal line used for inputting clock signals to the grid driving unit;
the grid driving unit is divided into a plurality of driving sub-modules, and each driving sub-module corresponds to at least two grid lines;
when the display panel displays a static picture, each driving submodule is used for inputting scanning signals to the corresponding grid line based on the low-frequency clock signals output by the clock signal line;
when the display panel displays a dynamic picture, the driving sub-module corresponding to the driving dynamic picture display region is configured to input a scanning signal to the corresponding gate line based on a high-frequency clock signal output by the clock signal line, and the remaining driving sub-modules are configured to input a scanning signal to the corresponding gate line based on a low-frequency clock signal output by the clock signal line.
In a possible implementation manner, in the display panel provided by the embodiment of the present invention, each of the driving sub-modules has a trigger signal input terminal;
when the display panel displays a static picture, each trigger signal input end is used for inputting a first level signal, and each driving submodule is used for inputting a scanning signal to the corresponding grid line based on the low-frequency clock signal under the control of the first level signal;
when the display panel displays a dynamic picture, the trigger signal input end of the driving submodule corresponding to the driving dynamic picture display area is used for inputting a second level signal, and the driving submodule is used for inputting a scanning signal to the corresponding grid line based on the high-frequency clock signal under the control of the second level signal; the other trigger signal input ends are used for keeping inputting the first level signal, and each driving submodule is used for inputting a scanning signal to the corresponding grid line based on the low-frequency clock signal under the control of the first level signal.
In a possible implementation manner, the display panel provided in an embodiment of the present invention further includes: a control chip;
the control chip is used for inputting the first level signal to each trigger signal input end when the display panel displays a static picture; when the display panel displays a dynamic picture, the second level signal is input to the trigger signal input end of the driving submodule corresponding to the driving dynamic picture display area, and the first level signal is input to the rest of the trigger signal input ends.
In a possible implementation manner, the display panel provided in an embodiment of the present invention includes: the control chip and a plurality of decoders are in one-to-one correspondence with the driving sub-modules;
the input end of each decoder is used for inputting the control signal output by the control chip, and the output end of each decoder is connected with the trigger signal input end of the corresponding driving submodule; the decoder comprises a plurality of output ends, the output ends of the decoder connected with the driving submodules are different, and the number of the output ends of the decoder is not less than that of the driving submodules.
In a possible implementation manner, in the display panel provided in an embodiment of the present invention, the gate driving unit is a gate driving chip; the grid driving chip is provided with a selection signal end;
when the display panel displays a static picture, the selection signal end is used for inputting a first control signal, and the grid drive chip is used for inputting a scanning signal to each grid line through each drive submodule based on the low-frequency clock signal under the control of the first control signal;
when the display panel displays a dynamic picture, the selection signal end is used for inputting a second control signal, the gate drive chip is used for inputting a scanning signal to the corresponding gate line through the drive submodule correspondingly driving the dynamic picture display area under the control of the second control signal based on the high-frequency clock signal, and inputting the scanning signal to the corresponding gate line through the other drive submodules based on the low-frequency clock signal.
In a possible implementation manner, the display panel provided in an embodiment of the present invention further includes: a time schedule controller;
the time sequence controller is used for inputting the first control signal to the selection signal end when the display panel displays a static picture; and when the display panel displays a dynamic picture, inputting the second control signal to the selection signal end.
The embodiment of the present invention provides a driving method applied to the display panel provided by the embodiment of the present invention, including:
when the display panel displays a static picture, each driving submodule inputs a scanning signal to the corresponding grid line based on a low-frequency clock signal output by the clock signal line;
when the display panel displays a dynamic picture, the driving sub-modules corresponding to the driving dynamic picture display region input scanning signals to the corresponding gate lines based on the high-frequency clock signals output by the clock signal lines, and the other driving sub-modules output low-frequency clock signals to the corresponding gate lines based on the clock signal lines.
In a possible implementation manner, the driving method provided by an embodiment of the present invention specifically includes:
when the display panel displays a static picture, inputting a first level signal to a trigger signal input end of each drive submodule; and each driving submodule inputs a scanning signal to the corresponding grid line based on the low-frequency clock signal under the control of the first level signal.
When the display panel displays a dynamic picture, inputting a second level signal to the trigger signal input end of the driving submodule corresponding to the driving dynamic picture display area, and inputting the first level signal to the rest of the trigger signal input ends; the driving submodule correspondingly driving the dynamic picture display area inputs a scanning signal to the corresponding grid line based on the high-frequency clock signal under the control of the second level signal; and the other driving sub-modules input scanning signals to the corresponding grid lines based on the low-frequency clock signals under the control of the first level signal.
In a possible implementation manner, the driving method provided by an embodiment of the present invention further includes:
the control chip inputs control signals to the input end of each decoder;
each decoder decodes the control signal and inputs a corresponding level signal to the trigger signal input end of the corresponding drive submodule through each output end; the decoder comprises a plurality of output ends, the output ends of the decoder connected with the driving submodules are different, and the number of the output ends of the decoder is not less than that of the driving submodules.
In a possible implementation manner, in the driving method provided in an embodiment of the present invention, the gate driving unit is a gate driving chip; the gate driving chip is provided with a selection signal end, and the driving method comprises the following steps:
when the display panel displays a static picture, the grid drive chip inputs scanning signals to the grid lines through the drive submodules based on the low-frequency clock signals under the control of first control signals input by the selection signal end;
when the display panel displays a dynamic picture, the gate driving chip inputs a scanning signal to the corresponding gate line through the driving submodule corresponding to the driving dynamic picture display area based on the high-frequency clock signal under the control of a second control signal input by the selection signal terminal, and inputs a scanning signal to the corresponding gate line through the other driving submodules based on the low-frequency clock signal.
In a possible implementation manner, the driving method provided by an embodiment of the present invention further includes:
when the display panel displays a static picture, the time sequence controller inputs the first control signal to the selection signal end;
and when the display panel displays a dynamic picture, the time sequence controller inputs the second control signal to the selection signal end.
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 in the display region, a gate driving unit in the peripheral region for supplying a scan signal to each gate line, and a clock signal line for inputting a clock signal to the gate driving unit; the grid driving unit is divided into a plurality of driving submodules, and each driving submodule corresponds to at least two grid lines; when the display panel displays a static picture, each driving submodule is used for inputting scanning signals to the corresponding grid line based on the low-frequency clock signals output by the clock signal line; when the display panel displays a dynamic picture, the driving sub-modules corresponding to the display areas of the dynamic picture are used for inputting scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, and the other driving sub-modules are used for inputting scanning signals to the corresponding grid lines based on the low-frequency clock signals output by the clock signal lines.
Specifically, in the display panel provided in the embodiment of the present invention, the gate driving unit for driving the display panel to perform line-by-line scanning is divided into a plurality of driving sub-modules, and each driving sub-module correspondingly drives at least two gate lines on the display panel. When the display panel displays a static picture, all the driving submodules input scanning signals to corresponding grid lines according to low-frequency clock signals output by clock signal lines, and normal driving scanning of the display panel is kept; when the display panel carries out dynamic display, the driving sub-modules correspondingly driving the dynamic pictures input scanning signals to corresponding grid lines based on high-frequency clock signals output by the clock signal lines so as to ensure the smoothness of the dynamic pictures, and the other driving sub-modules keep inputting the scanning signals of the static pictures to the corresponding grid lines. Therefore, when the display panel carries out dynamic display, only part of the driving submodules input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, namely, part of the driving submodules of the display panel are in a high-frequency working state, and carry out high-frequency working relative to the whole display panel, so that the power consumption of the display panel can be effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a display panel according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a gate driving timing sequence of a display panel according to an embodiment of the invention;
fig. 4 is a second schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 5 is a third schematic structural diagram of a display panel according to an embodiment of the present invention;
fig. 6 is a flowchart of a driving method of a display panel according to an embodiment of the invention;
fig. 7 is a schematic structural diagram of a display device according to an embodiment of the present 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, including: a plurality of gate lines in the display region, a gate driving unit in the peripheral region for supplying a scan signal to each gate line, and a clock signal line for inputting a clock signal to the gate driving unit;
as shown in fig. 1, the gate driving unit is divided into a plurality of driving sub-modules blockn (n is a positive integer greater than 1), each driving sub-module blockn corresponding to at least two gate lines (not shown in fig. 1);
when the display panel displays a static picture, each driving submodule blockn is used for inputting scanning signals to corresponding grid lines based on low-frequency clock signals output by clock signal lines;
when the display panel displays a dynamic picture, the driving submodule blockn corresponding to the driving dynamic picture display region is used for inputting a scanning signal to the corresponding grid line based on a high-frequency clock signal output by the clock signal line, and the other driving submodules are used for inputting a scanning signal to the corresponding grid line based on a low-frequency clock signal output by the clock signal line.
In the display panel provided in the embodiment of the present invention, the gate driving unit for driving the display panel to perform line-by-line scanning is divided into a plurality of driving sub-modules, and each driving sub-module correspondingly drives at least two gate lines on the display panel. When the display panel displays a static picture, all the driving submodules input scanning signals to corresponding grid lines according to low-frequency clock signals output by clock signal lines, and normal driving scanning of the display panel is kept; when the display panel carries out dynamic display, the driving sub-modules correspondingly driving the dynamic pictures input scanning signals to corresponding grid lines based on high-frequency clock signals output by the clock signal lines so as to ensure the smoothness of the dynamic pictures, and the other driving sub-modules keep inputting the scanning signals of the static pictures to the corresponding grid lines. Therefore, when the display panel carries out dynamic display, only part of the driving submodules input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, namely, part of the driving submodules of the display panel are in a high-frequency working state, and carry out high-frequency working relative to the whole display panel, so that the power consumption of the display panel can be effectively reduced.
In a specific implementation, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, each driving sub-module block has a trigger signal input terminal STVn (n is a positive integer greater than 1);
when the display panel displays a static picture, each trigger signal input end is used for inputting a first level signal, and each driving submodule is used for inputting a scanning signal to a corresponding grid line based on a low-frequency clock signal under the control of the first level signal;
when the display panel displays a dynamic picture, the trigger signal input end of the driving submodule correspondingly driving the display area of the dynamic picture is used for inputting a second level signal, and the driving submodule is used for inputting a scanning signal to a corresponding grid line based on a high-frequency clock signal under the control of the second level signal; the other trigger signal input ends are used for keeping inputting of a first level signal, and each driving submodule is used for inputting scanning signals to corresponding grid lines based on low-frequency clock signals under the control of the first level signal.
Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 2, each driving submodule block may include a plurality of cascaded shift registers GIP, where except for a first stage and a last stage of shift register in each driving submodule, output terminals of the remaining shift registers not only input a scan signal to a corresponding gate line gate, but also input a reset signal to an upper stage of shift register adjacent to the corresponding gate line gate, and input a trigger signal to a lower stage of shift register adjacent to the corresponding gate line gate; the output end of the first-stage shift register inputs scanning signals to the corresponding grid lines and also inputs trigger signals to the second-stage shift register; the output end of the last stage of shift register inputs scanning signals to the corresponding grid lines and also inputs reset signals to the adjacent shift register of the previous stage. Thus, the in-cell shift register GIP in the display panel is divided into a plurality of driver sub-blocks, each having a trigger signal input terminal STVn, as shown in fig. 2, when the display panel performs a dynamic picture, the trigger level signal is input to the trigger signal input terminal of the corresponding driving submodule for driving dynamic picture display, such as block4 and block5, causing the corresponding drive sub-modules block4 and block5 to be triggered, at which time, as shown in fig. 3, the clock signal clock on the clock signal line is switched to a high frequency state, so that the driving sub-modules block4 and block5 input high frequency scanning signals to the corresponding gate lines to realize the display of dynamic pictures, and the other driving sub-modules keep a low-frequency working state, and input a low-frequency clock signal serving as a scanning signal to the corresponding grid line, so that the static picture display or the picture with lower refresh rate requirement in the corresponding area of the display panel is maintained.
In a specific implementation, as shown in fig. 2, the display panel provided in the embodiment of the present invention may further include: a control chip; the control chip is used for inputting corresponding level signals to the trigger signal input ends of the drive submodules aiming at the static and dynamic display of the display panel, namely when the display panel displays a static picture, a first level signal is input to each trigger signal input end, so that each drive submodule inputs a scanning signal to each grid line based on a low-frequency clock signal and the static picture display of the display panel is kept; when the display panel displays a dynamic picture, a second level signal is input to the trigger signal input end of the drive submodule corresponding to the drive dynamic picture display area, and a first level signal is input to the other trigger signal input ends, so that the display panel is ensured that only the drive submodule corresponding to the drive dynamic picture display inputs a scanning signal to the corresponding grid line based on a high-frequency clock signal, namely only part of the level signals input by the drive submodule at the trigger signal input end are switched to work at high frequency, and the power consumption of the display panel during dynamic display is reduced.
In another embodiment, as shown in fig. 4, the display panel provided in the embodiment of the present invention may include: the control chip and each drive submodule are in one-to-one correspondence to the plurality of decoders Y; the input end of each decoder Y is used for inputting a control signal output by the control chip, and the output end of each decoder Y is connected with the trigger signal input end STVn of the corresponding drive sub-module block; the decoder Y comprises a plurality of output ends, the output ends of the decoder Y connected with the driving submodule blocks are different, and the number of the output ends of the decoder Y is not less than that of the driving submodule blocks. Specifically, in the display panel provided in the embodiment of the present invention, the shift register GIP embedded in the display panel may be divided into a plurality of driver sub-modules block, and the STVn input signal at the trigger signal input terminal of each driver sub-module block is from the embedded decoder. For example, as shown in fig. 4, the display panel includes 8 driver sub-modules, each driver sub-module block needs a 3-line to 8-line decoder Y, signals input at an input end of the decoder may be provided by a control chip, and an output end of the decoder is connected to a trigger signal input end of a corresponding driver sub-module, so that more driver sub-module block partitions may be implemented with fewer output pins of the control chip.
In another embodiment, as shown in fig. 5, in the display panel provided in the embodiment of the present invention, the gate driving unit is a gate driving chip GDr; the grid driving chip is provided with a selection signal end; when the display panel displays a static picture, a signal end is selected for inputting a first control signal, and the grid drive chip is used for inputting a scanning signal Gate to each grid line through each drive submodule block on the basis of a low-frequency clock signal under the control of the first control signal; when the display panel displays a dynamic picture, the selection signal end is used for inputting a second control signal, the Gate driving chip GDr is used for inputting a scanning signal Gate to a corresponding Gate line based on a high-frequency clock signal through a driving submodule block n correspondingly driving a dynamic picture display area under the control of the second control signal, and inputting the scanning signal Gate to the corresponding Gate line based on a low-frequency clock signal through the other driving submodules block n.
Specifically, in the display panel provided in the embodiment of the present invention, as shown in fig. 5, the Gate driving of the display panel may also use an external chip driving scheme, that is, a Gate driving chip GDr with a selection function is provided, and when the display panel performs dynamic display, the corresponding driving submodule block n is designated to input the scanning signal Gate based on the Gate line corresponding to the high-frequency clock signal and is in a high-frequency operating state, and the other driving submodules block n input the scanning signal Gate to the corresponding Gate line based on the low-frequency clock signal and are in a low-frequency operating state; when the static image display is carried out, the scanning signal Gate is input to each grid line through each driving submodule based on the low-frequency clock signal, and the static image display is kept.
In a specific implementation, the display panel provided in the embodiment of the present invention may further include: a time schedule controller TCON; the time sequence controller TCON is used for inputting a first control signal to a selection signal end when the display panel displays a static picture; when the display panel displays a dynamic picture, a second control signal is input to the selection signal end, so that the gate driving chip designates the corresponding driving sub-module to switch the working state under the control of the corresponding control signal Ctrl, and the corresponding timing controller TCON also inputs the corresponding timing control signal CLk to the source driving chip SDr in the process of realizing the progressive scanning of the display panel, so that the source driving chip SDr cooperatively inputs the corresponding Data signal Data, and the image Data input to the display panel can be refreshed in real time.
Based on the same inventive concept, an embodiment of the present invention provides a driving method applied to the display panel provided by the embodiment of the present invention, as shown in fig. 6, the driving method may include:
s101, when a display panel displays a static picture, each driving submodule inputs scanning signals to corresponding grid lines based on low-frequency clock signals output by clock signal lines;
s102, when the display panel displays a dynamic picture, the driving sub-modules correspondingly driving the dynamic picture display area input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, and the other driving sub-modules output low-frequency clock signals to input scanning signals to the corresponding grid lines based on the clock signal lines.
In the driving method provided in the embodiment of the present invention, when the display panel displays a static image, all the driving submodules input scanning signals to corresponding gate lines according to low-frequency clock signals output by clock signal lines, so as to maintain normal driving scanning of the display panel; when the display panel carries out dynamic display, the driving sub-modules correspondingly driving the dynamic pictures input scanning signals to corresponding grid lines based on high-frequency clock signals output by the clock signal lines so as to ensure the smoothness of the dynamic pictures, and the other driving sub-modules keep inputting the scanning signals of the static pictures to the corresponding grid lines. Therefore, when the display panel carries out dynamic display, only part of the driving submodules input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, namely, part of the driving submodules of the display panel are in a high-frequency working state, and carry out high-frequency working relative to the whole display panel, so that the power consumption of the display panel can be effectively reduced.
In a specific implementation, the driving method provided in the embodiment of the present invention may specifically include:
when the display panel displays a static picture, inputting a first level signal to the trigger signal input end of each drive submodule; and each driving submodule inputs a scanning signal to the corresponding grid line based on a low-frequency clock signal under the control of the first level signal.
When the display panel displays a dynamic picture, inputting a second level signal to the trigger signal input end of the drive submodule corresponding to the drive dynamic picture display area, and inputting a first level signal to the other trigger signal input ends; the driving submodule correspondingly driving the dynamic picture display area inputs a scanning signal to the corresponding grid line based on the high-frequency clock signal under the control of the second level signal; and the other driving sub-modules input scanning signals to the corresponding grid lines based on the low-frequency clock signals under the control of the first level signal.
Specifically, in the driving method provided in the embodiment of the present invention, the operating state of each driving sub-module may be controlled by inputting a corresponding level signal to the trigger signal input end of each driving sub-module, that is, when the display panel performs static image display, the control chip inputs a first level signal to the trigger signal input end of each driving sub-module, and further controls each driving sub-module to input a scanning signal to each gate line based on the low-frequency clock signal, so as to drive the display panel to perform static image display; when the display panel carries out dynamic display, a second level signal is input to the trigger signal input end of the drive submodule corresponding to the drive dynamic picture, a first level signal is input to the rest trigger signal input ends, so that the drive submodule corresponding to the drive dynamic picture display area inputs a scanning signal to the corresponding grid line based on a high-frequency clock signal under the control of the second level signal, the dynamic display of the display picture is realized, and the rest drive submodules input the scanning signal to the corresponding grid line based on a low-frequency clock signal under the control of the first level signal, and the display of the static picture part is kept. Wherein the level signal input to the trigger signal input terminal of each driving submodule can be provided by the control chip.
In another embodiment, the driving method provided in the embodiment of the present invention may further include: the control chip inputs control signals to the input end of each decoder; each decoder decodes the control signal and inputs a corresponding level signal to the trigger signal input end of the corresponding drive submodule through each output end; the decoder comprises a plurality of output ends, the output ends of the decoder connected with the driving submodules are different, and the number of the output ends of the decoder is not less than that of the driving submodules. Specifically, in order to control more driver sub-module partitions with fewer pins of the control chip, the control chip may input a control signal to the decoder, and the decoder processes the control signal and inputs the processed control signal to the trigger signal input end of each driver sub-module.
In another embodiment, in the driving method provided in the embodiment of the present invention, the gate driving unit is a gate driving chip; the gate driving chip is provided with a selection signal end, and the driving method comprises the following steps:
when the display panel displays a static picture, the grid drive chip inputs scanning signals to each grid line through each drive submodule based on a low-frequency clock signal under the control of a first control signal input by a selection signal end;
when the display panel displays a dynamic picture, the gate driving chip inputs a scanning signal to the corresponding gate line based on a high-frequency clock signal through the driving submodule corresponding to the driving dynamic picture display area under the control of a second control signal input by the selection signal terminal, and inputs the scanning signal to the corresponding gate line based on a low-frequency clock signal through the other driving submodules.
Specifically, in the driving method provided in the embodiment of the present invention, the gate driver of the display panel may also use an external chip driving scheme, that is, a gate driver chip with a selection function is provided, and when the display panel performs dynamic display, the corresponding driving sub-module is designated to input a scan signal based on the gate line corresponding to the high-frequency clock signal and is in a high-frequency operating state, and the other driving sub-modules input a scan signal to the corresponding gate line based on the low-frequency clock signal and are in a low-frequency operating state; when the static picture is displayed, the scanning signals are input to the grid lines through the driving submodules based on the low-frequency clock signals, and the static picture display is kept. Specifically, when the display panel displays static and dynamic images, the control signal input to the selection signal terminal by the time schedule controller controls the gate driving chip to designate the working state of the corresponding driving submodule, namely when the display panel displays static images, the time schedule controller inputs a first control signal to the selection signal terminal; the grid driving chip controls each driving submodule to input scanning signals to each grid line based on a low-frequency clock signal under the control of a first control signal; when the display panel displays a dynamic picture, the time schedule controller inputs a second control signal to the selection signal end, the grid drive chip appoints the drive sub-module correspondingly driving the display area of the dynamic picture to input a scanning signal to the corresponding grid line based on a high-frequency clock signal under the control of the second control signal, and appoints the other drive sub-modules to input the scanning signal to the corresponding grid line based on a low-frequency clock signal.
Based on the same inventive concept, an embodiment of the present invention provides a display device, as shown in fig. 7, including the display panel provided by the embodiment of the present invention. Each driving submodule block n corresponds to at least two grid lines gate, and drives the display area of the display panel corresponding to the two grid lines to display a corresponding picture. The display device can be applied to any product or component with a display function, such as a mobile phone, a tablet personal 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 in the display region, a gate driving unit in the peripheral region for supplying a scan signal to each gate line, and a clock signal line for inputting a clock signal to the gate driving unit; the grid driving unit is divided into a plurality of driving submodules, and each driving submodule corresponds to at least two grid lines; when the display panel displays a static picture, each driving submodule is used for inputting scanning signals to the corresponding grid line based on the low-frequency clock signals output by the clock signal line; when the display panel displays a dynamic picture, the driving sub-modules corresponding to the display areas of the dynamic picture are used for inputting scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, and the other driving sub-modules are used for inputting scanning signals to the corresponding grid lines based on the low-frequency clock signals output by the clock signal lines.
Specifically, in the display panel provided in the embodiment of the present invention, the gate driving unit for driving the display panel to perform line-by-line scanning is divided into a plurality of driving sub-modules, and each driving sub-module correspondingly drives at least two gate lines on the display panel. When the display panel displays a static picture, all the driving submodules input scanning signals to corresponding grid lines according to low-frequency clock signals output by clock signal lines, and normal driving scanning of the display panel is kept; when the display panel carries out dynamic display, the driving sub-modules correspondingly driving the dynamic pictures input scanning signals to corresponding grid lines based on high-frequency clock signals output by the clock signal lines so as to ensure the smoothness of the dynamic pictures, and the other driving sub-modules keep inputting the scanning signals of the static pictures to the corresponding grid lines. Therefore, when the display panel carries out dynamic display, only part of the driving submodules input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, namely, part of the driving submodules of the display panel are in a high-frequency working state, and carry out high-frequency working relative to the whole display panel, so that the power consumption of the display panel can be effectively reduced.
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 (10)
1. A display panel, comprising: the display device comprises a plurality of grid lines positioned in a display area, a grid driving unit positioned in a peripheral area and used for providing scanning signals for the grid lines, and a clock signal line used for inputting clock signals to the grid driving unit; the method is characterized in that:
the grid driving unit is divided into a plurality of driving sub-modules, and each driving sub-module corresponds to at least two grid lines;
when the display panel displays a static picture, each driving submodule is used for inputting scanning signals to the corresponding grid line based on the low-frequency clock signals output by the clock signal line;
when the display panel displays a dynamic picture, the driving sub-modules corresponding to the driving dynamic picture display region are used for inputting scanning signals to the corresponding grid lines based on high-frequency clock signals output by the clock signal lines, and the other driving sub-modules are used for inputting scanning signals to the corresponding grid lines based on low-frequency clock signals output by the clock signal lines;
wherein each of the driving submodules has a trigger signal input end;
when the display panel displays a static picture, each trigger signal input end is used for inputting a first level signal, and each driving submodule is used for inputting a scanning signal to the corresponding grid line based on the low-frequency clock signal under the control of the first level signal;
when the display panel displays a dynamic picture, the trigger signal input end of the driving submodule corresponding to the driving dynamic picture display area is used for inputting a second level signal, and the driving submodule is used for inputting a scanning signal to the corresponding grid line based on the high-frequency clock signal under the control of the second level signal; the other trigger signal input ends are used for keeping inputting the first level signal, and each driving submodule is used for inputting a scanning signal to the corresponding grid line based on the low-frequency clock signal under the control of the first level signal.
2. The display panel of claim 1, further comprising: a control chip;
the control chip is used for inputting the first level signal to each trigger signal input end when the display panel displays a static picture; when the display panel displays a dynamic picture, the second level signal is input to the trigger signal input end of the driving submodule corresponding to the driving dynamic picture display area, and the first level signal is input to the rest of the trigger signal input ends.
3. The display panel of claim 1, comprising: the control chip and a plurality of decoders are in one-to-one correspondence with the driving sub-modules;
the input end of each decoder is used for inputting the control signal output by the control chip, and the output end of each decoder is connected with the trigger signal input end of the corresponding driving submodule; the decoder comprises a plurality of output ends, the output ends of the decoder connected with the driving submodules are different, and the number of the output ends of the decoder is not less than that of the driving submodules.
4. The display panel of claim 1, wherein the gate driving unit is a gate driving chip; the grid driving chip is provided with a selection signal end;
when the display panel displays a static picture, the selection signal end is used for inputting a first control signal, and the grid drive chip is used for inputting a scanning signal to each grid line through each drive submodule based on the low-frequency clock signal under the control of the first control signal;
when the display panel displays a dynamic picture, the selection signal end is used for inputting a second control signal, the gate drive chip is used for inputting a scanning signal to the corresponding gate line through the drive submodule correspondingly driving the dynamic picture display area under the control of the second control signal based on the high-frequency clock signal, and inputting the scanning signal to the corresponding gate line through the other drive submodules based on the low-frequency clock signal.
5. The display panel of claim 4, further comprising: a time schedule controller;
the time sequence controller is used for inputting the first control signal to the selection signal end when the display panel displays a static picture; and when the display panel displays a dynamic picture, inputting the second control signal to the selection signal end.
6. The driving method is characterized in that the display panel comprises a plurality of grid lines positioned in a display area, a grid driving unit positioned in a peripheral area and used for providing scanning signals for the grid lines, and a clock signal line used for inputting clock signals to the grid driving unit, wherein the grid driving unit is divided into a plurality of driving sub-modules, and each driving sub-module corresponds to at least two grid lines; the method comprises the following steps:
when the display panel displays a static picture, each driving submodule inputs a scanning signal to the corresponding grid line based on a low-frequency clock signal output by the clock signal line;
when the display panel displays a dynamic picture, the driving sub-modules corresponding to the driving dynamic picture display area input scanning signals to the corresponding grid lines based on the high-frequency clock signals output by the clock signal lines, and the other driving sub-modules output low-frequency clock signals to the corresponding grid lines based on the clock signal lines;
wherein each of the driving submodules has a trigger signal input end;
the driving method specifically comprises the following steps:
when the display panel displays a static picture, inputting a first level signal to a trigger signal input end of each drive submodule; each driving submodule inputs a scanning signal to the corresponding grid line based on the low-frequency clock signal under the control of the first level signal;
when the display panel displays a dynamic picture, inputting a second level signal to the trigger signal input end of the driving submodule corresponding to the driving dynamic picture display area, and inputting the first level signal to the rest of the trigger signal input ends; the driving submodule correspondingly driving the dynamic picture display area inputs a scanning signal to the corresponding grid line based on the high-frequency clock signal under the control of the second level signal; and the other driving sub-modules input scanning signals to the corresponding grid lines based on the low-frequency clock signals under the control of the first level signal.
7. The driving method according to claim 6, wherein the display panel further includes a control chip and a plurality of decoders in one-to-one correspondence with the respective driving sub-modules;
the method further comprises the following steps:
the control chip inputs control signals to the input end of each decoder;
each decoder decodes the control signal and inputs a corresponding level signal to the trigger signal input end of the corresponding drive submodule through each output end; the decoder comprises a plurality of output ends, the output ends of the decoder connected with the driving submodules are different, and the number of the output ends of the decoder is not less than that of the driving submodules.
8. The driving method according to claim 6, wherein the gate driving unit is a gate driving chip; the gate driving chip is provided with a selection signal end, and the driving method comprises the following steps:
when the display panel displays a static picture, the grid drive chip inputs scanning signals to the grid lines through the drive submodules based on the low-frequency clock signals under the control of first control signals input by the selection signal end;
when the display panel displays a dynamic picture, the gate driving chip inputs a scanning signal to the corresponding gate line through the driving submodule corresponding to the driving dynamic picture display area based on the high-frequency clock signal under the control of a second control signal input by the selection signal terminal, and inputs a scanning signal to the corresponding gate line through the other driving submodules based on the low-frequency clock signal.
9. The driving method according to claim 8, further comprising:
when the display panel displays a static picture, the time sequence controller inputs the first control signal to the selection signal end;
and when the display panel displays a dynamic picture, the time sequence controller inputs the second control signal to the selection signal end.
10. A display device comprising the display panel according to any one of claims 1 to 5.
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| CN109697966A (en) * | 2019-02-28 | 2019-04-30 | 上海天马微电子有限公司 | Array substrate, display panel and driving method thereof |
| CN114783360A (en) * | 2022-04-20 | 2022-07-22 | 京东方科技集团股份有限公司 | Grid driving control method and system, display driving system and display device |
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| KR102072781B1 (en) * | 2012-09-24 | 2020-02-04 | 삼성디스플레이 주식회사 | Display driving method and integrated driving appratus thereon |
| CN104123906A (en) * | 2014-07-29 | 2014-10-29 | 厦门天马微电子有限公司 | Display panel and driving method thereof |
| KR102268520B1 (en) * | 2014-12-10 | 2021-06-24 | 엘지디스플레이 주식회사 | Display device and method for driving the same |
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