CN112599101A - Driving method and device and display device - Google Patents
Driving method and device and display device Download PDFInfo
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- CN112599101A CN112599101A CN202011509268.XA CN202011509268A CN112599101A CN 112599101 A CN112599101 A CN 112599101A CN 202011509268 A CN202011509268 A CN 202011509268A CN 112599101 A CN112599101 A CN 112599101A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- 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
- G09G3/22—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 using controlled light sources
- G09G3/30—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 using controlled light sources using electroluminescent panels
- G09G3/32—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—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 using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- 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
- G09G3/34—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 by control of light from an independent source
- G09G3/36—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 by control of light from an independent source using liquid crystals
- G09G3/3611—Control of matrices with row and column drivers
- G09G3/3674—Details of drivers for scan electrodes
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2310/00—Command of the display device
- G09G2310/02—Addressing, scanning or driving the display screen or processing steps related thereto
- G09G2310/0264—Details of driving circuits
Abstract
A driving device and a method, and a display device are provided, wherein the driving device is used for driving a display panel, and the driving device includes a driving control unit, a first gate driving unit and a second gate driving unit, the driving control unit sends a first effective control signal to the first gate driving unit in a first frame, the first gate driving unit outputs a gate driving signal to a first group of gate lines so as to scan the gate lines in the first group of gate lines, the driving control unit sends a second effective control signal to the second gate driving unit in a second frame, and the second gate driving unit outputs a gate driving signal to a second group of gate lines so as to scan the gate lines in the second group of gate lines.
Description
Technical Field
The present disclosure relates to display technologies, and more particularly, to a driving method and apparatus, and a display apparatus.
Background
The resolution of displays is increasing nowadays. With the improvement of resolution, a Touch and Display Driver Integrated (TDDI with active pen) Panel with an active pen, an Integrated Circuit (IC) needs to increase Touch related driving functions and further needs to increase the number of bonding pins, and the space occupied by the IC increases, but the IC cannot be bonded on one side of the Panel due to the size limitation of the Panel (Panel) (especially products below 15.6 inches). The existing Panel resolved by Ultra High Definition (UHD) adopts a Multiplexer (MUX), so that the number of ICs is reduced, and the binding problem is improved.
Disclosure of Invention
The following is a summary of the subject matter described in detail herein. This summary is not intended to limit the scope of the claims.
The embodiment of the disclosure provides a driving device and method and a display device.
In one aspect, an embodiment of the present disclosure provides a driving apparatus for driving a display panel, where the display panel includes a plurality of gate lines, the plurality of gate lines are divided into two groups, which are respectively referred to as a first group of gate lines and a second group of gate lines, and the driving apparatus includes: the display panel comprises a drive control unit, a first grid drive unit and a second grid drive unit, wherein when the display panel is driven, the display time of two adjacent frames is respectively called as a first frame and a second frame, and the first frame and the second frame are alternately arranged, wherein:
the driving control unit is configured to send a first valid control signal to the first gate driving unit to control the first gate driving unit to output a gate driving signal, and send a second invalid control signal to the second gate driving unit to control the second gate driving unit not to output the gate driving signal or output an invalid gate driving signal in a first frame; sending a second effective control signal to the second gate driving unit in a second frame to control the second gate driving unit to output a gate driving signal, and sending a first ineffective control signal to the first gate driving unit to control the first gate driving unit not to output the gate driving signal or output an ineffective gate driving signal;
the first gate driving unit is configured to, after receiving a first effective control signal of the driving control unit, output a gate driving signal to the first group of gate lines to scan the gate lines in the first group of gate lines; after receiving a first invalid control signal of the drive control unit, not outputting a gate drive signal or outputting an invalid gate drive signal;
the second gate driving unit is configured to, after receiving a second effective control signal of the driving control unit, output a gate driving signal to the second group of gate lines to scan the gate lines in the second group of gate lines; and after receiving a second invalid control signal of the driving control unit, not outputting a gate driving signal or outputting an invalid gate driving signal.
In an exemplary embodiment, the first group of gate lines includes odd-numbered rows of gate lines, and the second group of gate lines includes even-numbered rows of gate lines; or, the first group of gate lines comprises even-numbered gate lines, and the second group of gate lines comprises odd-numbered gate lines;
the first frame is an odd frame, and the second frame is an even frame; or, the second frame is an odd frame, and the first frame is an even frame.
In an exemplary embodiment, the display panel further includes a plurality of touch rows, and the driving apparatus further includes a touch driving unit, wherein:
the drive control unit is further configured to send a third active control signal to the touch drive unit within each frame of display time;
the touch driving unit is configured to scan the touch line after receiving a third effective control signal of the driving control unit.
In an exemplary embodiment, the one-frame display time includes a plurality of display periods and a plurality of touch periods, and the display periods and the touch periods are alternately arranged;
in the plurality of display periods of a first frame, the first gate driving unit scans the gate lines of the first group of gate lines line by line; in the plurality of display periods of a second frame, the second gate driving unit performs line-by-line scanning on the gate lines of the second group of gate lines;
and in each touch time interval, the touch driving unit sequentially scans the touch rows.
In an exemplary embodiment, the number of touch time segments of one frame of display time is touch hit rate/driving frequency of the display panel.
The embodiment of the disclosure provides a display device, which comprises the driving device.
The embodiment of the present disclosure provides a driving method for driving a display panel, where the display panel includes a plurality of gate lines, the plurality of gate lines are divided into two groups, which are respectively referred to as a first group of gate lines and a second group of gate lines, when the display panel is driven, display time of two adjacent frames is respectively referred to as a first frame and a second frame, and the first frame and the second frame are alternately arranged, and the driving method includes:
scanning the gate lines in the first group of gate lines in a first frame, and not scanning the gate lines in the second group of gate lines;
and scanning the grid lines in the second group of grid lines in a second frame, and not scanning the grid lines in the first group of grid lines.
In an exemplary embodiment, the first group of gate lines includes odd-numbered rows of gate lines, and the second group of gate lines includes even-numbered rows of gate lines; or, the first group of gate lines comprises even-numbered gate lines, and the second group of gate lines comprises odd-numbered gate lines;
the first frame is an odd frame, and the second frame is an even frame; or, the first frame is an even frame, and the second frame is an odd frame.
In an exemplary embodiment, the display panel further includes a plurality of touch rows, a frame display time includes a plurality of display periods and a plurality of touch periods, the display periods and the touch periods are alternately arranged, the driving method further includes,
scanning the gate lines of the first group of gate lines line by line in the plurality of display periods of a first frame;
scanning the gate lines of the second group of gate lines line by line in the plurality of display periods of a second frame;
and scanning the touch rows in sequence in each touch time interval.
In an exemplary embodiment, the number of touch time segments of one frame of display time is touch hit rate/driving frequency of the display panel.
The embodiment of the application provides a driving device and method and a display device. The driving device is used for driving a display panel, and comprises: the driving control unit sends a first effective control signal to the first gate driving unit in a first frame to control the first gate driving unit to output a gate driving signal, and sends a second effective control signal to the second gate driving unit in a second frame to control the second gate driving unit to output the gate driving signal. According to the scheme provided by the embodiment, only one group of grid lines are driven in each frame of display time, and compared with the scheme that all the grid lines are driven in each frame of display time, under the condition that the driving frequency is not changed (the display time of one frame is not changed), the scanning time of 1 row of grid lines is increased, namely the charging time of the GOA TFT and the MUX TFT is increased, so that smaller MUX TFT and GOA TFT can be used, and the logic power consumption is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention may be realized and attained by the structure particularly pointed out in the written description and drawings.
Other aspects will be apparent upon reading and understanding the attached drawings and detailed description.
Drawings
The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the example serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a timing diagram of a gate driving circuit according to an embodiment;
fig. 2 is a schematic view of a driving device provided in an embodiment of the present disclosure;
FIG. 3 is a schematic view of a drive arrangement provided in an exemplary embodiment;
FIG. 4 is a schematic diagram of a display period and a touch period provided in an exemplary embodiment;
FIG. 5 is a timing diagram provided in an exemplary embodiment;
fig. 6 is a flowchart of a driving method according to an exemplary embodiment.
Detailed Description
Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the present application, the embodiments and features of the embodiments may be arbitrarily combined with each other without conflict.
The steps illustrated in the flow charts of the figures may be performed in a computer system such as a set of computer-executable instructions. Also, while a logical order is shown in the flow diagrams, in some cases, the steps shown or described may be performed in an order different than here.
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs.
In the drawings, the size of each component, the thickness of layers, or regions may be exaggerated for clarity. Therefore, the embodiments of the present disclosure are not necessarily limited to the dimensions, and the shapes and sizes of the respective components in the drawings do not reflect a true scale. Further, the drawings schematically show ideal examples, and the embodiments of the present disclosure are not limited to the shapes or numerical values shown in the drawings.
The ordinal numbers such as "first", "second", "third", etc., in this disclosure are provided to avoid confusion among the constituent elements, and do not indicate any order, number, or importance.
In the present disclosure, for convenience, terms indicating orientation or positional relationship such as "middle", "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like are used to explain positional relationship of constituent elements with reference to the drawings, only for convenience of description and simplification of description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present disclosure. The positional relationship of the components is changed as appropriate in accordance with the direction in which each component is described. Therefore, the words described in the disclosure are not limited thereto, and may be replaced as appropriate.
In this disclosure, the terms "mounted," "connected," and "connected" are to be construed broadly unless otherwise specifically stated or limited. For example, it may be a fixed connection, or a removable connection, or an integral connection; can be a mechanical connection, or an electrical connection; either directly or indirectly through intervening components, or both may be interconnected. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.
In the present disclosure, "electrically connected" includes a case where constituent elements are connected together by an element having some kind of electrical action. The "element having a certain electric function" is not particularly limited as long as it can transmit and receive an electric signal between connected components. Examples of the "element having some kind of electric function" include not only an electrode and a wiring but also a switching element such as a transistor, a resistor, an inductor, a capacitor, other elements having various functions, and the like.
With the improvement of the resolution, the charging time of the MUX is reduced, and the problem of insufficient charging is easy to occur. The decoding ratio of the MUX determines the MUX switching time (Switch time), the MUX Switch time is 1H time (time)/the MUX number, and 1H time is the display time of one row; for example, in a UHD product of 1:2MUX, MUX Switch Time is 1H Time/MUX number is 4.2/2H Time/2.1 us (microseconds), and the Switch Time is about 1.4us after considering signal Delay Time (Delay Time), so that a MUX Thin Film Transistor (TFT) and an Array substrate Gate Driver on Array (GOA) TFT Size (Size) are increased to meet charging requirements. The MUX TFT Size increases resulting in an increase in panel Logic power (Logic power). The power consumption increase of the panel with high pixel density (Pixels Per inc, PPI) is particularly prominent.
If 1 HTime can be increased, the MUX/GOA TFT size can be reduced to reduce logic power consumption. In the embodiment of the present disclosure, the MUX TFT size may be reduced by increasing the charging time. In an exemplary embodiment, a left-right alternating GOA driving scheme is adopted, during odd frames, the GOAs corresponding to the odd rows are operated, and the GOAs corresponding to the even rows are not operated, whereas during even frames, the GOAs corresponding to the even rows are operated, and the GOAs corresponding to the odd rows are not operated. In the embodiment of the disclosure, the original one-frame picture is displayed by using the time of two frames, which is similar to the frequency reduction function, the charging time is increased, the charging rate can be improved, and the sizes of the MUX TFT and the GOA TFT are reduced, so that the logic power consumption is reduced.
Fig. 1 is a schematic diagram of a GOA timing sequence in a technical solution. The signals (STV _1 to Source) in fig. 1 are signals of the GOA circuit. VDDO and VDDE are signals for driving the power supply terminals of the GOA circuits in the odd-numbered rows and for driving the even-numbered rows, respectively, and are switched in the gap Time (Blanking Time), in this embodiment, the driving frequency is 60Hz, and the 1-frame Time is 16.67 ms; the display duration is 16.67ms (one-frame duration) -7.2ms (touch duration) is 9.47 ms; for example, when the Full High Definition (FHD) panel line number is 1080 and the UHD panel line number is 2160, the 1H Time of FHD is 8.1us and the 1H Time of UHD is 4.2 us. In the actual calculation, when calculating the 1H time of FHD, the used row number is larger than 1080, and when calculating the 1H time of UHD, the used row number is larger than 2160.
Fig. 2 is a driving apparatus for driving a display panel according to an embodiment of the present disclosure, where the display panel includes a plurality of gate lines, the plurality of gate lines are divided into two groups, which are respectively referred to as a first group of gate lines and a second group of gate lines, and the driving apparatus includes: the driving control unit 10, the first gate driving unit 21, and the second gate driving unit 22 are configured to, when driving the display panel, respectively refer to display time of two adjacent frames as a first frame and a second frame, and the first frame and the second frame are alternately arranged, where:
the driving control unit 10 is configured to transmit a first active control signal to the first gate driving unit 21 to control the first gate driving unit 21 to output a gate driving signal, and transmit a second inactive control signal to the second gate driving unit 22 to control the second gate driving unit 22 not to output a gate driving signal or output an inactive gate driving signal in a first frame; sending a second effective control signal to the second gate driving unit 22 in a second frame to control the second gate driving unit 22 to output a gate driving signal, and sending a first ineffective control signal to the first gate driving unit 21 to control the first gate driving unit 21 not to output a gate driving signal or output an ineffective gate driving signal;
the first gate driving unit 21 is configured to, after receiving the first effective control signal of the driving control unit 10, output a gate driving signal to the first group of gate lines to scan the gate lines in the first group of gate lines; after receiving the first invalid control signal of the driving control unit 10, not outputting the gate driving signal or outputting the invalid gate driving signal;
the second gate driving unit 22 is configured to, after receiving the second effective control signal of the driving control unit 10, output a gate driving signal to the second group of gate lines to scan the gate lines in the second group of gate lines; after receiving the second invalid control signal of the driving control unit 10, the gate driving signal is not output or the invalid gate driving signal is output.
According to the scheme provided by the embodiment, only one group of grid lines are driven in each frame of display time, and compared with the scheme that all the grid lines are driven in each frame of display time, under the condition that the driving frequency is not changed (the display time of one frame is not changed), the scanning time of 1 row of grid lines is increased, namely the charging time of the GOA TFT and the MUX TFT is increased, so that smaller MUX TFT and GOA TFT can be used, and the logic power consumption is reduced.
In this embodiment, one frame display time is related to the driving frequency, and is not the time taken to actually display one frame image.
In an exemplary embodiment, the first and second sets of gate lines may include gate lines that do not overlap.
In an exemplary embodiment, the driving control Unit may be a Micro Controller Unit (MCU).
In an exemplary embodiment, the first gate driving unit 21 may be a GOA circuit, the second gate driving unit 22 may be a GOA circuit, and the GOA circuit may include a plurality of cascaded shift registers.
In an exemplary embodiment, the first gate driving unit 21 may be disposed at a first side of the display panel, and the second gate driving unit 21 is disposed at a second side of the display panel, where the first side and the second side are opposite and adjacent to a side where the bonding region of the display panel is located.
In an exemplary embodiment, the scanning the gate lines of the first group of gate lines may include sequentially turning on pixel driving circuits connected to the gate lines of the first group of gate lines. The scanning of the gate lines of the second group of gate lines may include sequentially turning on pixel driving circuits connected to the gate lines of the second group of gate lines.
When the first gate driving unit 21 does not output a gate driving signal or outputs an invalid gate driving signal, the pixel driving circuit connected to the gate line in the first group of gate lines is turned off; when the second gate driving unit 22 does not output a gate driving signal or outputs an invalid gate driving signal, the pixel driving circuit connected to the gate line of the second group of gate lines is turned off.
In an exemplary embodiment, the first group of gate lines includes odd-numbered rows of gate lines, and the second group of gate lines includes even-numbered rows of gate lines; or, the first group of gate lines comprises even-numbered gate lines, and the second group of gate lines comprises odd-numbered gate lines; the first frame is an odd frame, and the second frame is an even frame; or, the second frame is an odd frame, and the first frame is an even frame. That is, possible implementations include: scanning the grid lines of odd rows in sequence in odd frames, and scanning the grid lines of even rows in sequence in even frames; or, the even-numbered grid lines are scanned in sequence in the odd-numbered frames, and the odd-numbered grid lines are scanned in sequence in the even-numbered frames.
In an exemplary embodiment, the display panel further includes a plurality of touch rows, and each touch row includes a plurality of touch patterns. The touch control row and the grid line can extend and be arranged along the same direction. As shown in fig. 3, the driving apparatus further includes a touch driving unit 23, wherein:
the drive control unit 10 is further configured to send a third active control signal to the touch drive unit 23 within each frame display time;
the touch driving unit 23 is configured to scan the touch line after receiving the third effective control signal of the driving control unit.
In an exemplary embodiment, a frame of display time includes a plurality of display periods and a plurality of touch periods, and the display periods and the touch periods are alternately arranged. As shown in fig. 4, in the first frame, N display periods (only part of which is shown) and N touch periods (only part of which is shown) are included and the display periods and the touch periods are alternately set, and in the second frame, N display periods (only part of which is shown) and N touch periods (only part of which is shown) are included and the display periods and the touch periods are alternately set. In N display periods of a first frame, the first gate driving unit 21 performs line-by-line scanning on the gate lines in the first group of gate lines; in each touch time interval of the first frame, the touch driving unit 23 sequentially scans the touch rows, that is, in each touch time interval, the touch scanning of the whole display panel is completed. In N display periods of a second frame, the second gate driving unit 22 performs line-by-line scanning on the gate lines of the second group of gate lines; in each touch time interval of the second frame, the touch driving unit 23 sequentially scans the touch rows. And N is greater than or equal to 1.
In an exemplary embodiment, the Touch sensing times vary with the variation of the driving frequency, for example, the driving frequency of the display panel is 60Hz, the Touch pointing rate is 240Hz, the Touch sensing times is 4, the driving frequency of the display panel is 30Hz, the Touch pointing rate is 240Hz, and the Touch sensing times is 8. In an exemplary embodiment, the touch sensing times is touch hit rate/driving frequency of the display panel. That is, the number of touch time segments of one frame of display time is touch hit rate/driving frequency of the display panel, i.e., N is touch hit rate/driving frequency of the display panel. N may be set to other values as needed, which is not limited in the embodiments of the present disclosure. The larger the N value is, the higher the touch sensitivity is, and the better the touch performance is.
Taking the touch hit rate as 240 and the driving frequency of the display panel as 60Hz as an example, when N is 240/60 is 4, i.e. the display panel is touch-scanned 4 times within one frame of display time. At this time, the first frame display time includes a first display time period, a first touch time period, a second display time period, a second touch time period, a third display time period, a third touch time period, a fourth display time period and a fourth touch time period which are sequentially set, the second frame display time includes a fifth display time period, a fifth touch time period, a sixth display time period, a sixth touch time period, a seventh display time period, a seventh touch time period, an eighth display time period and an eighth touch time period which are sequentially set, the first frame scans the grid lines in the odd-numbered rows, and the second frame scans the grid lines in the even-numbered rows. When the touch control lines of the display panel are 25 lines and the gate lines are 1080 lines, the scanning of 540 lines of odd lines is completed in a first display time period, a second display time period, a third display time period and a fourth display time period, for example, the scanning of 1 st to 135 th odd lines of gate lines is completed in the first display time period, the scanning of 136 th to 270 th odd lines of gate lines is completed in the second display time period, the scanning of 271 th to 405 th odd lines of gate lines is completed in the third display time period, the scanning of 406 th to 540 th odd lines of gate lines is completed in the fourth display time period, the scanning of 25 lines of touch control lines is completed in the first touch control time period, the scanning of 25 lines of touch control lines is completed in the second touch control time period, the scanning of 25 lines of touch control lines is completed in the third touch control time period, and the scanning of 25 lines of touch control lines is completed in the fourth touch; the scanning of 540 rows of grid lines in an even number of rows is completed in the fifth display time period, the sixth display time period, the seventh display time period and the eighth display time period, the scanning of 25 rows of touch control rows is completed in the fifth touch control time period, the scanning of 25 rows of touch control rows is completed in the sixth touch control time period, the scanning of 25 rows of touch control rows is completed in the seventh touch control time period, and the scanning of 25 rows of touch control rows is completed in the eighth touch control time period.
Taking the touch hit rate as 240 and the driving frequency of the display panel as 30Hz as an example, when N is 240/30 is 8, i.e. 8 touch scans are performed on the display panel within one frame of display time. At this time, the first frame display time includes a 1 st display period to an 8 th display period, and a 1 st touch period to an 8 th touch period, and the display periods and the touch periods are alternately set, the second frame display time includes a 9 th display period to a 16 th display period, and a 9 th touch period to a 16 th touch period, and the display periods and the touch periods are alternately set, and the first frame scans the gate lines of the odd-numbered rows, and the second frame scans the gate lines of the even-numbered rows. When the touch control rows of the display panel are 90 rows and the grid lines are 2160 rows, scanning of 1080 rows of grid lines of odd rows is completed together from the 1 st display time interval to the 8 th display time interval, and scanning of the 90 rows of touch control rows is completed in each touch control time interval from the 1 st touch control time interval to the 8 th touch control time interval; scanning of 1080 rows of grid lines in even rows is completed from the 9 th display time period to the 16 th display time period, and scanning of 90 rows of touch lines is completed in each touch time period from the 9 th touch time period to the 16 th touch time period.
As shown in fig. 5, CLK1 to CLK8 are control signals output by the driving control unit 10, and the first gate control unit 21 and the second gate drive unit 22 output corresponding gate drive signals according to the control of the control signals output by the driving control unit 10, so as to scan the gate lines of the odd-numbered rows (G1, G3, …, G1079) and the gate lines of the even-numbered rows (G2, G4, …, G1080).
In an exemplary embodiment, the display panel may be an in-cell (in-cell) touch display panel or an on-cell (on-cell) touch display panel. The display panel may be a liquid crystal display panel or an organic light emitting diode display panel, or the like.
In an exemplary embodiment, the Touch driving unit 23 may be a Touch chip (Touch IC).
The 1H time variation and Logic Power variation data for different drive frequencies are shown in Table 1 below. As shown in Table 1, the driving frequency is changed from 60Hz to 30Hz, the 1H time is changed from 4.21us to 8.41us, the size of GOA TFT is reduced from 300 micrometers (um) to 160um, the size of MUX TFT is reduced from 180um to 100um, the total power consumption is reduced from 309 milliwatts (mw) to 171mw, and the reduction is significant. Therefore, in the embodiment of the present disclosure, by increasing the 1H time, smaller sizes of the GOA TFT and the MUX TFT can be used, thereby reducing logic power consumption.
TABLE 1
Fig. 6 is a flowchart of a driving method provided in the embodiment of the present disclosure. As shown in fig. 6, an embodiment of the present disclosure provides a driving method for driving a display panel, where the display panel may include a plurality of gate lines, the plurality of gate lines are divided into two groups, which are respectively referred to as a first group of gate lines and a second group of gate lines, when the display panel is driven, two adjacent frames of display time are respectively referred to as a first frame and a second frame, and the first frame and the second frame are alternately arranged, the driving method includes:
The driving method provided by the embodiment scans only a part of gate lines in one frame, so that the scanning time of 1 row of gate lines is increased, that is, the charging time of the MUX TFT and the GOA TFT is increased, and therefore, the MUX TFT and the GOA TFT with smaller sizes can be used, thereby reducing the logic power consumption.
In an exemplary embodiment, in step 601, the first gate driving unit 21 scans the gate lines of the first group of gate lines; in step 602, the second gate driving unit 22 scans the gate lines in the second group of gate lines.
In an exemplary embodiment, the first group of gate lines includes odd-numbered rows of gate lines, and the second group of gate lines includes even-numbered rows of gate lines; or, the first group of gate lines comprises even-numbered gate lines, and the second group of gate lines comprises odd-numbered gate lines.
In an exemplary embodiment, the first frame is an odd frame and the second frame is an even frame; or, the first frame is an even frame, and the second frame is an odd frame.
In an exemplary embodiment, the display panel may further include a plurality of touch rows, the one-frame display time may include a plurality of display periods and a plurality of touch periods, the display periods and the touch periods being alternately arranged, the driving method may further include,
scanning the gate lines of the first group of gate lines line by line in the plurality of display periods of a first frame;
scanning the gate lines of the second group of gate lines line by line in the plurality of display periods of a second frame;
and scanning the touch rows in sequence in each touch time interval.
In an exemplary embodiment, during the plurality of display periods of a first frame, the first gate driving unit 21 scans the gate lines of the first group of gate lines line by line, each display period scans a part of the gate lines of the first group of gate lines, and during each touch period of the first frame, the touch driving unit 23 sequentially scans the plurality of touch lines; in the display periods of the second frame, the second gate driving unit 22 scans the gate lines of the second group of gate lines line by line, each display period scans a part of the gate lines of the second group of gate lines, and in each touch period of the second frame, the touch driving unit 23 sequentially scans the touch lines.
In an exemplary embodiment, the number of touch time segments of one frame of display time is touch hit rate/driving frequency of the display panel. In the method provided by the embodiment, the number of touch times can be changed along with the change of the driving frequency of the display panel.
The embodiment of the present disclosure further provides a display device including the driving device of the foregoing embodiment. 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. The display device may be a touch display device, which may include an active pen.
Although the embodiments of the present invention have been described above, the above description is only for the convenience of understanding the present invention, and is not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (10)
1. A driving apparatus for driving a display panel including a plurality of gate lines divided into two groups, referred to as a first group of gate lines and a second group of gate lines, respectively, the driving apparatus comprising: the display panel comprises a drive control unit, a first grid drive unit and a second grid drive unit, wherein when the display panel is driven, the display time of two adjacent frames is respectively called as a first frame and a second frame, and the first frame and the second frame are alternately arranged, wherein:
the driving control unit is configured to send a first valid control signal to the first gate driving unit to control the first gate driving unit to output a gate driving signal, and send a second invalid control signal to the second gate driving unit to control the second gate driving unit not to output the gate driving signal or output an invalid gate driving signal in a first frame; sending a second effective control signal to the second gate driving unit in a second frame to control the second gate driving unit to output a gate driving signal, and sending a first ineffective control signal to the first gate driving unit to control the first gate driving unit not to output the gate driving signal or output an ineffective gate driving signal;
the first gate driving unit is configured to, after receiving a first effective control signal of the driving control unit, output a gate driving signal to the first group of gate lines to scan the gate lines in the first group of gate lines; after receiving a first invalid control signal of the drive control unit, not outputting a gate drive signal or outputting an invalid gate drive signal;
the second gate driving unit is configured to, after receiving a second effective control signal of the driving control unit, output a gate driving signal to the second group of gate lines to scan the gate lines in the second group of gate lines; and after receiving a second invalid control signal of the driving control unit, not outputting a gate driving signal or outputting an invalid gate driving signal.
2. The drive device according to claim 1,
the first group of grid lines comprises odd-numbered grid lines, and the second group of grid lines comprises even-numbered grid lines; or, the first group of gate lines comprises even-numbered gate lines, and the second group of gate lines comprises odd-numbered gate lines;
the first frame is an odd frame, and the second frame is an even frame; or, the second frame is an odd frame, and the first frame is an even frame.
3. The driving apparatus according to claim 1 or 2, wherein the display panel further comprises a plurality of touch rows, the driving apparatus further comprising a touch driving unit, wherein:
the drive control unit is further configured to send a third active control signal to the touch drive unit within each frame of display time;
the touch driving unit is configured to scan the touch line after receiving a third effective control signal of the driving control unit.
4. The driving apparatus according to claim 3, wherein the one-frame display time includes a plurality of display periods and a plurality of touch periods, and the display periods and the touch periods are alternately arranged;
in the plurality of display periods of a first frame, the first gate driving unit scans the gate lines of the first group of gate lines line by line; in the plurality of display periods of a second frame, the second gate driving unit performs line-by-line scanning on the gate lines of the second group of gate lines;
and in each touch time interval, the touch driving unit sequentially scans the touch rows.
5. The driving apparatus as claimed in claim 4, wherein the touch time period of one frame of display time is touch pointing rate/driving frequency of the display panel.
6. A display device comprising a drive device according to any one of claims 1 to 5.
7. A driving method for driving a display panel, the display panel including a plurality of gate lines, the plurality of gate lines being divided into two groups, which are respectively referred to as a first group of gate lines and a second group of gate lines, when the display panel is driven, display times of two adjacent frames are respectively referred to as a first frame and a second frame, and the first frame and the second frame are alternately arranged, the driving method comprising:
scanning the gate lines in the first group of gate lines in a first frame, and not scanning the gate lines in the second group of gate lines;
and scanning the grid lines in the second group of grid lines in a second frame, and not scanning the grid lines in the first group of grid lines.
8. The driving method according to claim 7,
the first group of grid lines comprises odd-numbered grid lines, and the second group of grid lines comprises even-numbered grid lines; or, the first group of gate lines comprises even-numbered gate lines, and the second group of gate lines comprises odd-numbered gate lines;
the first frame is an odd frame, and the second frame is an even frame; or, the first frame is an even frame, and the second frame is an odd frame.
9. The driving method according to claim 7 or 8, wherein the display panel further includes a plurality of touch rows, a frame display time includes a plurality of display periods and a plurality of touch periods, the display periods and the touch periods are alternately arranged, the driving method further includes,
scanning the gate lines of the first group of gate lines line by line in the plurality of display periods of a first frame;
scanning the gate lines of the second group of gate lines line by line in the plurality of display periods of a second frame;
and scanning the touch rows in sequence in each touch time interval.
10. The driving method according to claim 9, wherein the touch time period of one frame of display time is touch hit rate/driving frequency of the display panel.
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