CN109192124B - Control method of display panel, driving circuit board and display device - Google Patents
Control method of display panel, driving circuit board and display device Download PDFInfo
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- CN109192124B CN109192124B CN201811172235.3A CN201811172235A CN109192124B CN 109192124 B CN109192124 B CN 109192124B CN 201811172235 A CN201811172235 A CN 201811172235A CN 109192124 B CN109192124 B CN 109192124B
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- 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
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Abstract
The invention discloses a control method of a display panel, a driving circuit board and a display device, wherein the display panel comprises: the gate driving circuit is provided with a first voltage signal end and a second voltage signal end, the first voltage signal end is configured to receive a first signal for controlling the electric potential of a first node, the second voltage signal end is configured to receive a second signal for controlling the electric potential of a second node, and the first signal and the second signal are inverted signals; the inversion period of the first signal and the second signal is set to be a fixed inversion period, the first signal and the second signal are controlled to perform inversion time by adjusting the refresh frequency of the display panel, the fixed inversion period can guarantee the power consumption and the service life of the gate driving circuit, and the inversion time of the first signal and the second signal can be guaranteed to be positioned in the non-display time of scanning a frame by adjusting the refresh frequency of the display panel to control the inversion time of the first signal and the second signal, so that the display of the display panel is not influenced.
Description
Technical Field
The invention relates to the technical field of display, in particular to a control method of a display panel, a driving circuit board and a display device.
Background
In a display panel, a gate-on signal is usually supplied to a gate of each Thin Film Transistor (TFT) in a pixel region through a gate driving circuit. The grid driving circuit is formed by cascading a plurality of cascaded shift registers, and each stage of shift register is used for providing a grid opening signal for a grid line connected with a signal output end of the stage of shift register so as to open the TFT of the pixel area of the corresponding row.
In order to reduce the threshold voltage drift amount of each transistor in the shift register in the prior art, two modules with the same structure are arranged in the shift register to respectively control the potentials of two nodes with the same function, the two modules are controlled through two signal ends, and the two signal ends alternately provide signals for the corresponding modules so as to realize the function of the shift register. In order to guarantee the requirements of the grid driving circuit on power consumption and service life, the two signal terminals adjust the inversion period of the signals provided by the two signal terminals according to the refresh frequency of the display panel, wherein the inversion period of the signals provided by the two signal terminals is 2S-3S at low refresh frequency (for example, 48 HZ-72 HZ), but the inversion period of the signals provided by the two signal terminals is 2S-6S at high refresh frequency (for example, 48 HZ-144 HZ). Under the condition of high refresh frequency, along with the switching of the refresh frequency of the display panel, the inversion period of the signals provided by the two signal ends is not fixed, and the range is large, so that the power consumption and the service life of the gate driving circuit can be greatly influenced.
Therefore, a technical problem to be solved is urgently needed by those skilled in the art how to guarantee the power consumption and the lifetime of the gate driving circuit at a high refresh frequency.
Disclosure of Invention
The embodiment of the invention provides a control method of a display panel, a driving circuit board and a display device, which are used for solving the problem that under the condition of high refreshing frequency, the power consumption and the service life of a grid driving circuit are influenced because a signal end for controlling the potential of a corresponding node of the grid driving circuit provides a signal with a larger inversion period range in the prior art.
In an embodiment of the present invention, a control method for a display panel includes a gate driving circuit, where the gate driving circuit has a first voltage signal terminal and a second voltage signal terminal, the first voltage signal terminal is configured to receive a first signal for controlling a first node potential, the second voltage signal terminal is configured to receive a second signal for controlling a second node potential, and the first signal and the second signal are inverted signals; the control method comprises the following steps:
before displaying the next frame of picture, judging whether the refresh frequency of the next frame of picture is the same as the refresh frequency of the current frame of picture;
when the refresh frequency of the next frame of picture is determined to be different from the refresh frequency of the current frame of picture, determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame of picture and a preset fixed inversion period, wherein the fixed inversion period is the inversion period of the first signal and the second signal;
and controlling the first signal and the second signal to be inverted at the inversion time.
In a possible implementation manner, in the method for controlling a display panel according to an embodiment of the present invention, the determining, according to the refresh frequency of the next frame and a preset fixed inversion period, the inversion time of the first signal and the second signal includes:
and determining the inversion time of the first signal and the second signal according to the refresh frequency and the pre-established corresponding relation between the refresh frequency and the inversion time in the fixed inversion period.
In a possible implementation manner, in the control method of the display panel provided in the embodiment of the present invention, the determining whether the refresh frequency of the next frame of picture is the same as the refresh frequency of the current frame of picture specifically includes:
acquiring the scanning time used by the next frame of picture, and judging whether the scanning time of the next frame of picture is the same as the scanning time of the current frame of picture;
and when the scanning time of the next frame of picture is different from the scanning time of the current frame of picture, determining the refreshing frequency of the display panel for displaying the next frame of picture according to the scanning time of the next frame of picture.
In a possible implementation manner, in the control method of the display panel provided in the embodiment of the present invention, the method further includes:
and when a first frame of picture is displayed, determining the inversion time of the first signal and the second signal according to a preset initial refresh frequency and a preset corresponding relation between the refresh frequency and the inversion time.
In a possible implementation manner, in the control method of the display panel provided in the embodiment of the present invention, a value range of the fixed inversion period is 2S to 5S.
In another aspect, an embodiment of the present invention provides a driving circuit board, including:
the judging circuit is used for judging whether the refreshing frequency of the next frame of picture is the same as the refreshing frequency of the current frame of picture before the next frame of picture is displayed;
the processing circuit is used for determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame of picture and a preset fixed inversion period when the refresh frequency of the next frame of picture is determined to be different from the refresh frequency of the current frame of picture, wherein the fixed inversion period is the inversion period of the first signal and the second signal;
and the control circuit is used for controlling the first signal and the second signal to be inverted at the inversion time.
In a possible implementation manner, in the foregoing driving circuit board provided in an embodiment of the present invention, the driving circuit board further includes: the memorizer is used for storing the pre-established corresponding relation between the refreshing frequency and the inversion time under the fixed inversion period;
the processing circuit is specifically configured to determine the inversion time to the first signal and the second signal according to the refresh frequency and a pre-established correspondence between the refresh frequency and the inversion time in the fixed inversion period.
In a possible implementation manner, in the driving circuit board provided in the embodiment of the present invention, the determining circuit is specifically configured to obtain a scanning time used by the next frame of picture, and determine whether the scanning time of the next frame of picture is the same as the scanning time of the current frame of picture;
and when the scanning time of the next frame of picture is different from the scanning time of the current frame of picture, determining the refreshing frequency of the display panel for displaying the next frame of picture according to the scanning time of the next frame of picture.
In a possible implementation manner, in the foregoing driving circuit board provided in an embodiment of the present invention, the driving circuit board further includes:
and the initial control sub-circuit is used for determining the inversion time of the first signal and the second signal according to a preset initial refresh frequency and a preset corresponding relation between the refresh frequency and the inversion time when a first frame of picture is displayed.
In another aspect, an embodiment of the present invention provides a display device, including the driving circuit board in any one of the above embodiments.
The invention has the following beneficial effects:
the embodiment of the invention provides a control method of a display panel, a driving circuit board and a display device, wherein the display panel comprises the following components: a gate driving circuit having a first voltage signal terminal configured to receive a first signal controlling a first node potential and a second voltage signal terminal configured to receive a second signal controlling a second node potential, the first signal and the second signal being inverted signals; the inversion period of the first signal and the second signal is set to be a fixed inversion period, the first signal and the second signal are controlled to perform inversion time by adjusting the refresh frequency of the display panel, the fixed inversion period can guarantee the power consumption and the service life of the gate driving circuit, and the inversion time of the first signal and the second signal is controlled by adjusting the refresh frequency of the display panel to ensure that the inversion time of the first signal and the second signal is within the non-display time of scanning a frame, so that the display of the display panel is not influenced.
Drawings
FIG. 1 is a diagram illustrating a shift register according to the related art;
FIG. 2 is a timing diagram of the shift register of FIG. 1;
fig. 3 is a flowchart of a control method of a display panel according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a driving circuit board according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
A shift register in the related art, as shown in fig. 1 and 2, includes a transistor M2o and a transistor M2e, a gate of the transistor M2o is connected to the VDDo signal terminal, and a potential of a node PDo is controlled; the grid of the M2e transistor is connected with a VDDE signal end to control the potential of the PDe node, and during the operation process of the shift register, a high-level signal is received at the VDDO signal end or the VDDE signal end at the same time to control the potential of the corresponding node, so that the duty ratio of grid bias voltages of the M2o transistor and the M2e transistor can be reduced by 50%, and the threshold voltage drift of the M2o transistor and the M2e transistor is greatly reduced. The shift register further includes an INPUT transistor M1, an output transistor M3, transistors (M4o, M4e, M5o, M5e, M6o, M6e, M7o, M7e, ") for controlling potentials of nodes PDo, PDe and PU, a storage capacitor C1, and signal terminals (an INPUT signal terminal INPUT, an output signal terminal OUT, and a clock signal terminal CLK). It should be noted that, the shift register with the structure shown in fig. 1 is only used as an example for description, and all the structures of the shift register according to the concept of the present invention are within the protection scope of the present invention.
When the refresh frequency of the display panel is between 48HZ and 72HZ, when the refresh frequency is 72HZ, the inversion period of the signals of the VDDO signal terminal and the VDDE signal terminal is 2S, the non-display time of the 144 th frame of the display panel is controlled, and the signals of the VDDO signal terminal and the VDDE signal terminal are inverted; when the refresh frequency is 48HZ, in order to control the non-display time of the refresh 144 th frame of the display panel, the signals at the VDDo signal terminal and the VDDe signal terminal are inverted, and the inversion period of the signals at the VDDo signal terminal and the VDDe signal terminal is set to 3S.
When the refresh frequency of the display panel is 48 HZ-144 HZ, when the refresh frequency is 144HZ, the inversion period of the signals of the VDDO signal terminal and the VDDE signal terminal is 2S, the non-display time of the display panel refreshing 288 frame is controlled, and the signals of the VDDO signal terminal and the VDDE signal terminal are inverted; when the refresh frequency is 48HZ, in order to control the non-display time of the display panel refresh frame 288, the signals at the VDDo signal terminal and the VDDe signal terminal are inverted, and the inversion period of the signals at the VDDo signal terminal and the VDDe signal terminal is set to 6S. Therefore, in the case of a high refresh rate, the inversion periods of the signals at the VDDo signal terminal and the VDDe signal terminal are not fixed and are wide in range with the switching of the refresh rate at any time, which has a large influence on the power consumption and the lifetime of the gate driving circuit.
It should be noted that, in the above embodiment, the low refresh frequency is 48HZ to 72HZ, and the high refresh frequency is 48HZ to 144HZ, but the low refresh frequency and the high refresh frequency are not limited to the above frequency ranges, and the invention discloses how to invert the signals provided by the two signal terminals at the high refresh frequency, and the specific range of the high refresh frequency is determined according to the actual use, and is not limited to this.
The following describes in detail specific embodiments of a control method for a display panel, a driving circuit board, and a display device according to an embodiment of the present invention with reference to the accompanying drawings.
In the control method of the display panel provided by the embodiment of the present invention, the display panel includes a gate driving circuit, the gate driving circuit has a first voltage signal terminal and a second voltage signal terminal, the first voltage signal terminal is configured to receive a first signal for controlling a first node potential, the second voltage signal terminal is configured to receive a second signal for controlling a second node potential, and the first signal and the second signal are inverted signals; as shown in fig. 3, the method may specifically include the following steps:
s301, before displaying the next frame of picture, judging whether the refresh frequency of the next frame of picture is the same as the refresh frequency of the current frame of picture;
s302, when the refresh frequency of the next frame of picture is determined to be different from the refresh frequency of the current frame of picture, determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame of picture and a preset fixed inversion period, wherein the fixed inversion period is the inversion period of the first signal and the second signal;
and S303, controlling the first signal and the second signal to invert at the inversion time.
It should be noted that, in the control method of the display panel according to the embodiment of the present invention, the inversion time of the first signal and the second signal is determined according to the refresh frequency of the next frame and the preset fixed inversion period, specifically, the fixed inversion period is 2S, and the refresh frequency of the next frame is 100HZ, and when the refresh frequency of the next frame is determined to be 100HZ, the fixed inversion period is 2S, so that the non-display time of the 200 th frame (the fixed inversion period × the refresh frequency) from the next frame can be calculated as the inversion time of the first signal and the second signal. Specifically, the non-display time of the 200 th frame refers to that one frame time includes a display time (display) and a non-display time (blank), where a region corresponding to the display panel in the display time generally includes 1080 rows of pixels, and a region corresponding to the display panel in the non-display time is 46 rows of pixels, as long as it is ensured that the inversion time of the first signal and the second signal is within a time of scanning 46 rows of pixels in the refresh 200 th frame, and the first signal and the second signal are generally inverted when scanning the 1100 th row of pixels in the 200 th frame, that is, the first signal and the second signal are inverted within the non-display time of scanning the last frame in a fixed inversion period.
The embodiment of the invention provides a control method of a display panel, and the display panel comprises the following steps: the gate driving circuit is provided with a first voltage signal terminal and a second voltage signal terminal, the first voltage signal terminal is configured to receive a first signal for controlling the electric potential of a first node, the second voltage signal terminal is configured to receive a second signal for controlling the electric potential of a second node, and the first signal and the second signal are inverted signals; the inversion period of the first signal and the second signal is set to be a fixed inversion period, the first signal and the second signal are controlled to perform inversion time by adjusting the refresh frequency of the display panel, the fixed inversion period can guarantee the power consumption and the service life of the gate driving circuit, and the inversion time of the first signal and the second signal is controlled by adjusting the refresh frequency of the display panel to ensure that the inversion time of the first signal and the second signal is within the non-display time of scanning a frame, so that the display of the display panel is not influenced.
Optionally, in the method for controlling a display panel according to the embodiment of the present invention, determining inversion time of the first signal and the second signal according to a refresh frequency of a next frame and a preset fixed inversion period includes:
and determining the inversion time of the first signal and the second signal according to the refresh frequency and the pre-established corresponding relation between the refresh frequency and the inversion time in a fixed inversion period.
Specifically, in the control method of the display panel provided in the embodiment of the present invention, the pre-established correspondence between the refresh frequency and the inversion time in the fixed inversion period may be an established correspondence between the refresh frequency and the inversion time in the fixed inversion period, and the inversion time of the first signal and the second signal is calculated through the determined refresh frequency and the correspondence; of course, the method may also be a table of correspondence between the refresh frequency and the inversion time at a fixed inversion period, and after the refresh frequency of the next frame is determined, the inversion time of the first signal and the second signal at the corresponding refresh frequency may be determined by table lookup. The table of correspondence between the refresh frequency and the inversion time in the fixed inversion period may be as follows:
| fixed reversal period (S) | Refresh frequency (HZ) | Inversion time of the first signal and the |
| 2 | 48 | Time taken for 95 frames +1100 |
| 2 | 60 | Time spent in 119 frames +1100 |
| 2 | 80 | 159 frame +1100 |
| 2 | 100 | Time taken for 199 frame +1100 |
| 2 | 120 | Time taken for 239 frames +1100 |
| 2 | 144 | 287 frame +1100 lines |
The table is a table in which a fixed inversion period is 2S, in which only the refresh frequencies of 48HZ, 60HZ, 80HZ, 100HZ, 120HZ, and 144HZ are listed in the table, but any refresh frequency between 48HZ and 144HZ has the inversion time of the corresponding first signal and second signal, and only the above refresh frequencies are taken as examples.
Optionally, in the control method of the display panel provided in the embodiment of the present invention, determining whether the refresh frequency of the next frame of picture is the same as the refresh frequency of the current frame of picture, specifically includes:
acquiring the scanning time used by the next frame of picture, and judging whether the scanning time of the next frame of picture is the same as the scanning time of the current frame of picture;
and determining the refresh frequency of the display panel for displaying the next frame according to the scanning time of the next frame when the scanning time of the next frame is different from the scanning time of the current frame.
The scanning time of a frame and the refresh frequency of a frame are in reciprocal relation, the scanning time of the next frame is determined, and the refresh frequency of the next frame can be determined according to the scanning time.
Specifically, in the control method of the display panel provided in the embodiment of the present invention, the method further includes:
and when the first frame picture is displayed, determining the inversion time of the first signal and the second signal according to the preset initial refresh frequency and the corresponding relation between the preset refresh frequency and the inversion time.
When the display panel displays a first frame of picture, the first frame of picture does not exist, and thus the first frame of picture cannot be compared with the previous frame of picture, so that the inversion time of the first signal and the second signal needs to be determined according to the preset initial refresh frequency.
Optionally, in the control method of the display panel provided in the embodiment of the present invention, a value range of the fixed inversion period is 2S to 5S.
The fixed inversion period needs to be determined according to the range of the refresh frequency of the display panel, and therefore, for the display panels with different refresh frequencies, the fixed inversion period may also be different accordingly, specifically, the fixed inversion period may be any time of 2S, 2.5S, 3S, 3.5S, 4S, 4.5S, or 5S, and of course, may also be other times within 2S to 5S, and is not limited specifically herein.
Based on the same inventive concept, the embodiment of the invention also provides a driving circuit board, as shown in fig. 4. The method comprises the following steps:
a judging circuit 1, configured to judge whether a refresh frequency of a next frame is the same as a refresh frequency of a current frame before the next frame is displayed;
the processing circuit 2 is used for determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame and a preset fixed inversion period when the refresh frequency of the next frame is determined to be different from the refresh frequency of the current frame, wherein the fixed inversion period is the inversion period of the first signal and the second signal;
and a control circuit 3 for controlling the first signal and the second signal to be inverted at the inversion time.
Specifically, in the driving circuit board provided in the above embodiment of the present invention, the driving circuit board further includes: the memory is used for storing the pre-established corresponding relation between the refreshing frequency and the inversion time under the fixed inversion period;
the processing circuit is specifically configured to determine the inversion time of the first signal and the second signal according to the refresh frequency and a pre-established correspondence between the refresh frequency and the inversion time in a fixed inversion period.
Optionally, in the driving circuit board provided in the above embodiment of the present invention, the determining circuit is specifically configured to obtain a scanning time for a next frame of picture, and determine whether the scanning time for the next frame of picture is the same as the scanning time for the current frame of picture;
and determining the refresh frequency of the display panel for displaying the next frame according to the scanning time of the next frame when the scanning time of the next frame is different from the scanning time of the current frame.
Optionally, in the driving circuit board provided in the above embodiment of the present invention, further includes:
and the initial control sub-circuit is used for determining the inversion time of the first signal and the second signal according to a preset initial refresh frequency and the corresponding relation between the preset refresh frequency and the inversion time when the first frame of picture is displayed.
The driving circuit board provided in any of the embodiments is configured to execute the control method of the display panel provided in any of the embodiments, and therefore, the driving circuit in the embodiments may be implemented by referring to the control method of the display panel in the embodiments, which is not described herein again.
Based on the same inventive concept, as shown in fig. 5, an embodiment of the present invention further provides a display device, including the driving circuit board provided in any of the above embodiments. 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 implementation of the display device can be referred to the embodiment of the driving circuit board, and repeated details are not repeated.
The embodiment of the invention provides a control method of a display panel, a driving circuit board and a display device, wherein the display panel comprises the following components: a gate driving circuit having a first voltage signal terminal configured to receive a first signal controlling a first node potential and a second voltage signal terminal configured to receive a second signal controlling a second node potential, the first signal and the second signal being inverted signals; the inversion period of the first signal and the second signal is set to be a fixed inversion period, the first signal and the second signal are controlled to perform inversion time by adjusting the refresh frequency of the display panel, the fixed inversion period can guarantee the power consumption and the service life of the gate driving circuit, and the inversion time of the first signal and the second signal is controlled by adjusting the refresh frequency of the display panel to ensure that the inversion time of the first signal and the second signal is within the non-display time of scanning a frame, so that the display of the display panel is not influenced.
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 control method of a display panel comprises a grid drive circuit, wherein the grid drive circuit is provided with a first voltage signal end and a second voltage signal end, the first voltage signal end is configured to receive a first signal for controlling the electric potential of a first node, the second voltage signal end is configured to receive a second signal for controlling the electric potential of a second node, the first node and the second node are two pull-down nodes with the same function, and the first signal and the second signal are opposite-phase signals; the control method is characterized by comprising the following steps:
before displaying the next frame of picture, judging whether the refresh frequency of the next frame of picture is the same as the refresh frequency of the current frame of picture;
when the refresh frequency of the next frame of picture is determined to be different from the refresh frequency of the current frame of picture, determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame of picture and a preset fixed inversion period, wherein the fixed inversion period is the inversion period of the first signal and the second signal;
and controlling the first signal and the second signal to be inverted at the inversion time.
2. The method for controlling a display panel according to claim 1, wherein the determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame and a preset fixed inversion period specifically comprises:
and determining the inversion time of the first signal and the second signal according to the refresh frequency and the pre-established corresponding relation between the refresh frequency and the inversion time in the fixed inversion period.
3. The method for controlling a display panel according to claim 1, wherein the determining whether the refresh frequency of the next frame is the same as the refresh frequency of the current frame specifically comprises:
acquiring the scanning time used by the next frame of picture, and judging whether the scanning time of the next frame of picture is the same as the scanning time of the current frame of picture;
and when the scanning time of the next frame of picture is different from the scanning time of the current frame of picture, determining the refresh frequency of the display panel for displaying the next frame of picture according to the scanning time of the next frame of picture.
4. The method of controlling a display panel according to claim 1, characterized in that the method further comprises:
and when a first frame of picture is displayed, determining the inversion time of the first signal and the second signal according to a preset initial refresh frequency and a preset corresponding relation between the refresh frequency and the inversion time.
5. The control method of the display panel according to any one of claims 1 to 4, wherein the fixed inversion period has a value ranging from 2S to 5S.
6. A driving circuit board applied to a display panel, the display panel including a gate driving circuit, the gate driving circuit having a first voltage signal terminal and a second voltage signal terminal, the first voltage signal terminal being configured to receive a first signal for controlling a potential of a first node, the second voltage signal terminal being configured to receive a second signal for controlling a potential of a second node, the first node and the second node being two pull-down nodes having the same function, the first node and the second node being different, the first signal and the second signal being inverted signals, the driving circuit comprising:
the judging circuit is used for judging whether the refreshing frequency of the next frame of picture is the same as the refreshing frequency of the current frame of picture before the next frame of picture is displayed;
the processing circuit is used for determining the inversion time of the first signal and the second signal according to the refresh frequency of the next frame and a preset fixed inversion period when the refresh frequency of the next frame is determined to be different from the refresh frequency of the current frame, wherein the fixed inversion period is the inversion period of the first signal and the second signal;
and the control circuit is used for controlling the first signal and the second signal to be inverted at the inversion time.
7. The drive circuit board of claim 6, further comprising: the memorizer is used for storing the pre-established corresponding relation between the refreshing frequency and the inversion time under the fixed inversion period;
the processing circuit is specifically configured to determine the inversion time of the first signal and the second signal according to the refresh frequency and a pre-established correspondence between the refresh frequency and the inversion time in the fixed inversion period.
8. The driving circuit board of claim 6, wherein the determining circuit is specifically configured to obtain a scanning time used by the next frame, and determine whether the scanning time of the next frame is the same as the scanning time of the current frame;
and when the scanning time of the next frame of picture is different from the scanning time of the current frame of picture, determining the refreshing frequency of the display panel for displaying the next frame of picture according to the scanning time of the next frame of picture.
9. The drive circuit board of claim 6, further comprising:
and the initial control sub-circuit is used for determining the inversion time of the first signal and the second signal according to a preset initial refresh frequency and a preset corresponding relation between the refresh frequency and the inversion time when a first frame of picture is displayed.
10. A display device comprising the driver circuit board according to any one of claims 6 to 9.
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| JP2000221470A (en) * | 1999-02-03 | 2000-08-11 | Denso Corp | Matrix type liquid crystal display device |
| JP2007048382A (en) * | 2005-08-10 | 2007-02-22 | Mitsubishi Electric Corp | Sift register |
| CN101083062A (en) * | 2006-06-02 | 2007-12-05 | Lg.菲利浦Lcd株式会社 | Liquid crystal display and driving method thereof |
| KR20080002512A (en) * | 2006-06-30 | 2008-01-04 | 엘지.필립스 엘시디 주식회사 | Shift register and its driving method |
| CN101777386A (en) * | 2010-01-06 | 2010-07-14 | 友达光电股份有限公司 | Shift register circuit |
| CN107293264A (en) * | 2016-04-04 | 2017-10-24 | 株式会社半导体能源研究所 | Display device, display module and electronic equipment |
| CN108597431A (en) * | 2018-02-12 | 2018-09-28 | 京东方科技集团股份有限公司 | Shift register cell and its control method, gate driving circuit, display device |
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| Publication number | Publication date |
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| CN109192124A (en) | 2019-01-11 |
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