CN112382246A - Driving method, time sequence controller and liquid crystal display - Google Patents
Driving method, time sequence controller and liquid crystal display Download PDFInfo
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- CN112382246A CN112382246A CN202011217704.6A CN202011217704A CN112382246A CN 112382246 A CN112382246 A CN 112382246A CN 202011217704 A CN202011217704 A CN 202011217704A CN 112382246 A CN112382246 A CN 112382246A
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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
- G09G3/3696—Generation of voltages supplied to electrode drivers
Abstract
The invention provides a driving method, which is applied to a time schedule controller of a liquid crystal display and comprises the following steps: acquiring a first frequency of a current display frame and a second frequency of a frame to be displayed; calculating a difference between the first frequency and the second frequency; comparing the difference value with a preset threshold value; if the difference is greater than a preset threshold, defining at least one transition frequency, wherein the at least one transition frequency is between a first frequency and a second frequency; and switching the working frequency from the first frequency to the second frequency sequentially through at least one transition frequency so as to drive the liquid crystal display panel. The driving method provided by the invention is applied to the time sequence control of the liquid crystal display, and because the difference value between adjacent frequencies is smaller than the preset threshold value during each switching, the display picture can not generate serious flicker because of overlarge frequency difference value, and the display effect is improved. The invention also provides a time schedule controller and a liquid crystal display.
Description
Technical Field
The invention relates to the technical field of display, in particular to a driving method, a time sequence controller and a liquid crystal display.
Background
The FreeSesync liquid crystal display refers to a liquid crystal display that carries FreeSesync technology, which enables the liquid crystal display to have a higher refresh frequency. When the liquid crystal display is switched from a higher refresh frequency to a lower refresh frequency, the dc component loaded on the liquid crystal generates a larger variation, and the variation is superimposed on the original optimal common voltage, so that the difference between the superimposed common voltage and the optimal common voltage is larger, and the display image of the liquid crystal display flickers seriously.
Disclosure of Invention
Therefore, it is necessary to provide a driving method, a timing controller and a liquid crystal display to solve the technical problem of severe flicker of a display screen caused by a large difference between refresh frequencies when the refresh frequencies of the conventional liquid crystal display are switched.
In a first aspect, the present invention provides a driving method applied in a timing controller of a liquid crystal display, the liquid crystal display further including a liquid crystal display panel electrically connected to the timing controller, the driving method including:
acquiring a first frequency of a current display frame and a second frequency of a frame to be displayed;
calculating a difference between the first frequency and the second frequency;
comparing the difference value with a preset threshold value;
if the difference is greater than the preset threshold, defining at least one transition frequency, wherein the at least one transition frequency is between the first frequency and the second frequency, and in the sequential ordering of the first frequency, the at least one transition frequency and the second frequency, the difference between two adjacent frequencies is less than the preset threshold;
and switching the working frequency from the first frequency to the second frequency sequentially through at least one transition frequency so as to drive the liquid crystal display panel.
In some embodiments, the step "if the difference is greater than the preset threshold, defining at least one transition frequency" specifically includes:
if the difference is larger than the preset threshold, respectively taking the first frequency and the second frequency as endpoint frequencies to construct a frequency interval;
based onThe dichotomy segments the frequency interval N times to divide the frequency interval into 2NA frequency sub-interval; wherein N is a positive integer;
acquisition 2NAn end point frequency of said frequency sub-interval, and 2NAnd the endpoint frequency except the first frequency and the second frequency in the endpoint frequencies of the frequency subintervals is taken as the transition frequency.
In some embodiments, N is 2 or 3.
In some embodiments, the first frequency is greater than the second frequency, and the step of "switching the operating frequency from the first frequency to the second frequency sequentially via at least one of the transition frequencies" to drive the liquid crystal display panel specifically includes:
and switching the working frequency from the first frequency to the second frequency through at least one transition frequency according to the sequence from large to small of at least one transition frequency so as to drive the liquid crystal display panel.
In some embodiments, the first frequency is less than the second frequency, and the step of "switching the operating frequency from the first frequency to the second frequency sequentially via at least one of the transition frequencies" to drive the liquid crystal display panel specifically includes:
and switching the working frequency from the first frequency to the second frequency through at least one transition frequency according to the sequence from small to large of at least one transition frequency so as to drive the liquid crystal display panel.
In a second aspect, the present invention provides a timing controller for a liquid crystal display, the liquid crystal display further includes a liquid crystal display panel electrically connected to the timing controller, the timing controller includes:
the acquisition module is used for acquiring a first frequency of a current display frame and a second frequency of a frame to be displayed;
a calculating module, configured to calculate a difference between the first frequency and the second frequency;
the comparison module is used for comparing the difference value with a preset threshold value;
a transition frequency determining module, configured to define at least one transition frequency if the difference is greater than the preset threshold, where at least one transition frequency is between the first frequency and the second frequency, and a difference between two adjacent frequencies in a sequential ordering of the first frequency, the at least one transition frequency, and the second frequency is less than the preset threshold;
and the switching module is used for sequentially switching the working frequency from the first frequency to the second frequency through at least one transition frequency so as to drive the liquid crystal display panel.
In a third aspect, the present invention provides a liquid crystal display, which includes a liquid crystal display panel and the above-mentioned timing controller, wherein the timing controller is electrically connected to the liquid crystal display panel.
In some embodiments, the liquid crystal display further includes a driving circuit including a gate driving circuit and a source driving circuit, and the timing controller is electrically connected to the liquid crystal display panel through the gate driving circuit and the source driving circuit, respectively.
In some embodiments, the liquid crystal display panel includes an array substrate and a color filter substrate that are disposed opposite to each other, and a side of the array substrate facing the color filter substrate is provided with:
the common electrode layer is arranged on the array substrate;
the insulating layer is arranged on the common electrode layer;
a pixel electrode layer disposed on the insulating layer;
the alignment layer is arranged on the insulating layer and covers the pixel electrode layer;
and the liquid crystal layer is arranged on the alignment layer.
In some embodiments, the resistivity of the alignment layer is less than 1013Ohm cm。
The driving method provided by the invention is applied to the time sequence control of the liquid crystal display, and the time sequence controller drives the liquid crystal display panel by defining at least one transition frequency between a first frequency and a second frequency and sequentially switching the working frequency of the time sequence controller from the first frequency to the second frequency through the at least one transition frequency under the condition that the difference value of the first frequency of a current display picture frame and the second frequency of a picture frame to be displayed is greater than a preset threshold value. Because the difference value between the adjacent frequencies is smaller than the preset threshold value during each switching, the display picture does not generate serious flicker because of overlarge frequency difference value, and the display effect is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a liquid crystal display according to an embodiment of the invention.
Fig. 2 is a schematic flow chart of a driving method according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a timing controller according to an embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a liquid crystal display panel according to an embodiment of the invention.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is to be understood that the embodiments described are only a few embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the lcd 1 includes a timing controller 10, a driving circuit 20 and an lcd panel 30 electrically connected in sequence. The driving circuit 20 includes a gate driving circuit 210 and a source driving circuit 220, and the timing controller 10 is electrically connected to the liquid crystal display panel 30 through the gate driving circuit 210 and the source driving circuit 220, respectively.
Specifically, the timing controller 10 has at least two output terminals, which are a first output terminal and a second output terminal, respectively, the liquid crystal display panel 30 has at least two input terminals, which are a first input terminal and a second input terminal, respectively, the first output terminal of the timing controller 10 is electrically connected to the input terminal of the gate driving circuit 210, and the output terminal of the gate driving circuit 210 is electrically connected to the first input terminal of the liquid crystal display panel 30; the second output terminal of the timing controller 10 is electrically connected to the input terminal of the source driving circuit 220, and the output terminal of the source driving circuit 220 is electrically connected to the second input terminal of the liquid crystal display panel 30.
It should be noted that, in the following description, the description of the connection relationship among the timing controller 10, the driving circuit 20 and the liquid crystal display panel 30 is simplified, and only the timing controller 10 is electrically connected to the liquid crystal display panel 30.
The timing controller 10 is used to generate timing control signals, such as converting received image data signals, control signals, and clock signals into data signals, control signals, and clock signals suitable for the driving circuit 20. The timing controller 10 outputs corresponding timing control signals to the gate driving circuit 210 and the source driving circuit 220, respectively.
The driving circuit 20 is configured to receive the timing control signal input by the timing controller 10 and generate a corresponding driving signal according to the received timing control signal. The gate driving circuit 210 is configured to receive a timing control signal input by the timing controller 10, and sequentially output appropriate switching voltages to the scan lines in the liquid crystal display panel 30 according to the received timing control signal, so as to drive the scan lines. The source driving circuit 220 is used for receiving the timing control signal input by the timing controller 10, storing the image data signal of the frame to be displayed in the buffer, and converting the image data signal into a corresponding driving voltage in coordination with the turn-on of the scan line to drive the data line in the liquid crystal display panel 30.
The liquid crystal display panel 30 is used for displaying a frame to be displayed under the driving of the driving circuit 20.
If the difference between the refresh frequency of the frame to be displayed (hereinafter referred to as the "frequency") and the refresh frequency of the currently displayed frame (hereinafter referred to as the "current frame") is large, a large variation is generated in the dc component loaded on the liquid crystal when the two frames are switched, and the variation is superimposed on the original optimal common voltage, so that the difference between the superimposed common voltage and the optimal common voltage is large, and the display image of the liquid crystal display 1 is severely flickered.
In view of the above, the embodiment of the invention provides a driving method of the liquid crystal display panel 30 for solving the above technical problems. Specifically, the driving method is applied to the timing controller 10 of the liquid crystal display 1. Please refer to fig. 1, for structure of the liquid crystal display 1, which is not described herein again. Referring to fig. 2, the driving method includes the following steps:
step S1, acquiring a first frequency of the current display frame and a second frequency of the frame to be displayed.
Specifically, the timing controller 10 obtains a refresh frequency of a current frame and a refresh frequency of a frame to be displayed, and in order to distinguish the two refresh frequencies, the refresh frequency of the current frame is referred to as a first frequency, and the refresh frequency of the frame to be displayed is referred to as a second frequency.
In step S2, a difference between the first frequency and the second frequency is calculated.
Specifically, the timing controller 10 calculates a difference between the first frequency and the second frequency, i.e., an absolute value of the difference between the first frequency and the second frequency. It should be noted that, if the difference between the two frames is larger, it indicates that the display image flickers more seriously when the current image frame is switched to the image frame to be displayed.
In this regard, the embodiment of the present invention stores a preset threshold in the timing controller 10 in advance, and the preset threshold is used to measure the severity of flicker of the display image when two adjacent image frames are switched.
Step S3, comparing the difference value with a preset threshold value.
In step S4, if the difference is greater than the preset threshold, at least one transition frequency is defined, where the at least one transition frequency is between the first frequency and the second frequency, and in the sequential ordering of the first frequency, the at least one transition frequency, and the second frequency, the difference between two adjacent frequencies is less than the preset threshold.
Specifically, the timing controller 10 determines the subsequent step by comparing the difference value with a preset threshold value. If the difference value is larger than the preset threshold value, the display picture is indicated to flicker seriously. At this time, the timing controller 10 defines at least one frequency between the first frequency and the second frequency, which is called a transition frequency in order to distinguish the frequency from the first frequency and the second frequency.
It should be noted that, in the sequential ordering of the first frequency, the at least one transition frequency, and the second frequency, a difference between two adjacent frequencies is smaller than a preset threshold.
In step S5, the operating frequency is sequentially switched from the first frequency to the second frequency via at least one transition frequency to drive the liquid crystal display panel 30.
Specifically, when displaying the current frame, the operating frequency of the timing controller 10 is the first frequency, and the timing controller 10 outputs the timing control signal to the driving circuit 20 at the first frequency, so that the driving circuit 20 drives the liquid crystal display panel 30 according to the received timing control signal. After the timing controller 10 defines at least one transition frequency, the operating frequency thereof is sequentially switched from the first frequency to the second frequency via the at least one transition frequency, so as to drive the liquid crystal display panel 30.
If the first frequency is greater than the second frequency, the timing controller 10 may gradually switch its operating frequency from the first frequency to the second frequency via at least one corresponding transition frequency according to a sequence of the at least one transition frequency from a large frequency to a small frequency. It is understood that the timing controller 10 may also switch the operating frequencies out of the above sequence, for example, in other embodiments, the timing controller 10 randomly orders at least one transition frequency and switches its own operating frequency according to the randomly ordered sequence. It should be noted that, no matter what sort of sequence the timing controller 10 switches the operating frequencies, it is required that the frequency difference before and after each switching is smaller than the preset threshold.
If the first frequency is smaller than the second frequency, the timing controller 10 gradually switches its own operating frequency from the first frequency to the second frequency via at least one corresponding transition frequency in the order from the small to the large of the at least one transition frequency. It is understood that the timing controller 10 may also switch the operating frequencies out of the above sequence, for example, in other embodiments, the timing controller 10 randomly orders at least one transition frequency and switches its own operating frequency according to the randomly ordered sequence. It should be noted that, no matter what sort of sequence the timing controller 10 switches the operating frequencies, it is required that the frequency difference before and after each switching is smaller than the preset threshold.
The driving method provided by the embodiment of the invention is applied to the timing controller 10 of the liquid crystal display 1, and the timing controller 10 drives the liquid crystal display panel 30 by defining at least one transition frequency between a first frequency and a second frequency and sequentially switching the working frequency of the timing controller from the first frequency to the second frequency through the at least one transition frequency under the condition that the difference value between the first frequency of a current display frame and the second frequency of a frame to be displayed is greater than a preset threshold value. Because the difference value between the adjacent frequencies is smaller than the preset threshold value during each switching, the display picture does not generate serious flicker because of overlarge frequency difference value, and the display effect is improved.
In some embodiments, the step S4 is specifically:
and if the difference is larger than a preset threshold value, respectively taking the first frequency and the second frequency as endpoint frequencies to construct a frequency interval. Segmenting the frequency interval N times based on dichotomy to divide the frequency interval into 2NA frequency sub-interval; wherein N isIs a positive integer. Acquisition 2NEnd point frequency of frequency subinterval, and 2NAnd the endpoint frequency except the first frequency and the second frequency in the endpoint frequencies of the frequency subintervals is taken as a transition frequency.
Specifically, if N is larger, the number of divided frequency sub-sections is also larger, and accordingly, the number of transition frequencies is also larger. The magnitude of N may be set according to actual requirements, for example, the magnitude of N is set according to the magnitude of the difference between the first frequency and the second frequency, and if the difference is larger, N is larger.
For example, the preset threshold is 80Hz, the first frequency is 120Hz, the second frequency is 1Hz, N is 2, since the difference between the first frequency and the second frequency is 119Hz, which is greater than the preset threshold, 120Hz and 1Hz are respectively used as endpoint frequencies to construct a frequency interval [1Hz, 120Hz ], 2-time segmentation is performed on [1Hz, 120Hz ] based on the dichotomy to divide [1Hz, 120Hz ] into 4 frequency subintervals, the endpoint frequencies of the 4 frequency subintervals are 120Hz, 90.25Hz, 60.5Hz, 30.75Hz and 1Hz, and 90.25Hz, 60.5Hz and 30.75Hz are used as transition frequencies.
It can be understood that the timing controller 10 calculates at least one transition frequency between the first frequency and the second frequency by using a bisection method, and the algorithm has low complexity and high operation speed, so that the frequency switching speed can be increased, and the user impression can be improved.
In some embodiments, N is 2 or 3.
It is understood that the numerous times of segmentation can completely eliminate the variation of the dc component loaded on the liquid crystal during the frequency switching, but in practice, the variation of the dc component loaded on the liquid crystal during each frequency transition can be segmented only a limited number of times, generally 2 or 3 times, due to the function of the timing controller 10 and the extremely short switching time, so that the display screen can be presented very well.
In some embodiments, the first frequency is greater than the second frequency, and the step S5 specifically includes: the operating frequency is switched from the first frequency to the second frequency via at least one corresponding transition frequency in order of the at least one transition frequency from large to small to drive the liquid crystal display panel 30.
For example, the preset threshold is 80Hz, the first frequency is 120Hz, the second frequency is 1Hz, and the number of uses of the binary method is set to be 2. Since the difference between the first frequency and the second frequency is 119Hz, and the difference is greater than the preset threshold, three transition frequencies are calculated based on the dichotomy, which are 90.25Hz, 60.5Hz, and 30.75Hz respectively. According to the sequence of the three transition frequencies from large to small, the timing controller 10 switches the working frequency of the timing controller from 120Hz to 90.25Hz, from 90.25Hz to 60.5Hz, from 60.5Hz to 30.75Hz, and from 30.75Hz to 1 Hz.
In some embodiments, the first frequency is less than the second frequency, and the step S5 specifically includes: the operating frequency is switched from the first frequency to the second frequency via at least one corresponding transition frequency in order of the at least one transition frequency from small to large to drive the liquid crystal display panel 30.
For example, the preset is 80Hz, the first frequency is 1Hz, the second frequency is 120Hz, and the number of uses of the dichotomy is set to be 2. Since the difference between the first frequency and the second frequency is 119Hz, and the difference is greater than the preset threshold, three transition frequencies are calculated based on the dichotomy, which are 30.75Hz, 60.5Hz, and 90.25Hz respectively. According to the sequence of the three transition frequencies from small to large, the timing controller 10 switches the working frequency of the timing controller from 1Hz to 30.75Hz, from 30.75Hz to 60.5Hz, from 60.5Hz to 90.25Hz, and from 90.25Hz to 120 Hz.
Referring to fig. 1, the timing controller 10 is applied to the liquid crystal display 1, and the liquid crystal display 1 further includes a liquid crystal display panel 30 electrically connected to the timing controller 10. Referring to fig. 3, the timing controller 10 includes:
an obtaining module 110, configured to obtain a first frequency of a current display frame and a second frequency of a frame to be displayed; a calculating module 120, configured to calculate a difference between the first frequency and the second frequency; a comparison module 130, configured to compare the difference with a preset threshold; a transition frequency determining module 140, configured to define at least one transition frequency if the difference is greater than a preset threshold, where the at least one transition frequency is between a first frequency and a second frequency, and in a sequential ordering of the first frequency, the at least one transition frequency, and the second frequency, a difference between two adjacent frequencies is less than the preset threshold; the switching module 150 is configured to switch the operating frequency from the first frequency to the second frequency sequentially through at least one transition frequency, so as to drive the liquid crystal display panel 30.
Specifically, the timing controller 10 provided in the embodiment of the present invention is used for executing the driving method of the above embodiment, and the driving method has been described in detail in the above embodiment, so that no further description is given here.
It is understood that, in the case that the difference between the first frequency of the current display frame and the second frequency of the frame to be displayed is greater than the preset threshold, the timing controller 10 drives the liquid crystal display panel 30 by defining at least one transition frequency between the first frequency and the second frequency and sequentially switching its operating frequency from the first frequency to the second frequency via the at least one transition frequency. Because the difference value between the adjacent frequencies is smaller than the preset threshold value during each switching, the display picture does not generate serious flicker because of overlarge frequency difference value, and the display effect is improved.
Referring to fig. 1, the liquid crystal display 1 includes a liquid crystal display panel 30 and the timing controller 10, and the timing controller 10 is electrically connected to the liquid crystal display panel 30.
In some embodiments, referring to fig. 1, the liquid crystal display 1 further includes a driving circuit 20, the driving circuit 20 includes a gate driving circuit 210 and a source driving circuit 220, and the timing controller 10 is electrically connected to the liquid crystal display panel 30 through the gate driving circuit 210 and the source driving circuit 220, respectively.
In some embodiments, referring to fig. 4, the liquid crystal display panel 30 includes an array substrate 310 and a color filter substrate 320 that are oppositely disposed, and a side of the array substrate 310 facing the color filter substrate 320 is provided with: a common electrode layer 330, an insulating layer 340, a pixel electrode layer 350, an alignment layer 360, and a liquid crystal layer 370.
The common electrode layer 330 is disposed on the array substrate 310, the insulating layer 340 is disposed on the common electrode layer 330, the pixel electrode layer 350 is disposed on the insulating layer 340, the alignment layer 360 is disposed on the insulating layer 340 and covers the pixel electrode layer 350, and the liquid crystal layer 370 is disposed on the alignment layer 360.
In some embodiments, the resistivity of alignment layer 360 is less than 1013Ohm cm.
It is understood that by selecting the alignment layer 360 with lower resistivity, the variation of the dc component applied to the liquid crystal at the moment of switching the frequency can be made smaller, further improving the display effect.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A driving method is applied to a time sequence controller of a liquid crystal display, the liquid crystal display also comprises a liquid crystal display panel which is electrically connected with the time sequence controller, and the driving method is characterized by comprising the following steps:
acquiring a first frequency of a current display frame and a second frequency of a frame to be displayed;
calculating a difference between the first frequency and the second frequency;
comparing the difference value with a preset threshold value;
if the difference is greater than the preset threshold, defining at least one transition frequency, wherein the at least one transition frequency is between the first frequency and the second frequency, and in the sequential ordering of the first frequency, the at least one transition frequency and the second frequency, the difference between two adjacent frequencies is less than the preset threshold;
and switching the working frequency from the first frequency to the second frequency sequentially through at least one transition frequency so as to drive the liquid crystal display panel.
2. The driving method according to claim 1, wherein the step "if the difference is greater than the preset threshold, defining at least one transition frequency" is specifically:
if the difference is larger than the preset threshold, respectively taking the first frequency and the second frequency as endpoint frequencies to construct a frequency interval;
segmenting the frequency interval N times based on a bisection method to divide the frequency interval into 2NA frequency sub-interval; wherein N is a positive integer;
acquisition 2NAn end point frequency of said frequency sub-interval, and 2NAnd the endpoint frequency except the first frequency and the second frequency in the endpoint frequencies of the frequency subintervals is taken as the transition frequency.
3. The driving method according to claim 2, wherein N is 2 or 3.
4. The driving method according to claim 1, wherein the first frequency is greater than the second frequency, and the step of switching the operating frequency from the first frequency to the second frequency sequentially via at least one of the transition frequencies to drive the liquid crystal display panel specifically comprises:
and switching the working frequency from the first frequency to the second frequency through at least one transition frequency according to the sequence from large to small of at least one transition frequency so as to drive the liquid crystal display panel.
5. The driving method according to claim 1, wherein the first frequency is smaller than the second frequency, and the step of switching the operating frequency from the first frequency to the second frequency sequentially via at least one of the transition frequencies to drive the liquid crystal display panel specifically comprises:
and switching the working frequency from the first frequency to the second frequency through at least one transition frequency according to the sequence from small to large of at least one transition frequency so as to drive the liquid crystal display panel.
6. A kind of time schedule controller, apply to the liquid crystal display, the said liquid crystal display also includes the liquid crystal display panel in connection with said time schedule controller electricity, characterized by that, the said time schedule controller includes:
the acquisition module is used for acquiring a first frequency of a current display frame and a second frequency of a frame to be displayed;
a calculating module, configured to calculate a difference between the first frequency and the second frequency;
the comparison module is used for comparing the difference value with a preset threshold value;
a transition frequency determining module, configured to define at least one transition frequency if the difference is greater than the preset threshold, where at least one transition frequency is between the first frequency and the second frequency, and a difference between two adjacent frequencies in a sequential ordering of the first frequency, the at least one transition frequency, and the second frequency is less than the preset threshold;
and the switching module is used for sequentially switching the working frequency from the first frequency to the second frequency through at least one transition frequency so as to drive the liquid crystal display panel.
7. A liquid crystal display, comprising a liquid crystal display panel and the timing controller of claim 6, wherein the timing controller is electrically connected to the liquid crystal display panel.
8. The liquid crystal display of claim 7, further comprising a driving circuit including a gate driving circuit and a source driving circuit, wherein the timing controller is electrically connected to the liquid crystal display panel through the gate driving circuit and the source driving circuit, respectively.
9. The liquid crystal display of claim 7, wherein the liquid crystal display panel comprises an array substrate and a color film substrate which are oppositely arranged, and one side of the array substrate facing the color film substrate is provided with:
the common electrode layer is arranged on the array substrate;
the insulating layer is arranged on the common electrode layer;
a pixel electrode layer disposed on the insulating layer;
the alignment layer is arranged on the insulating layer and covers the pixel electrode layer;
and the liquid crystal layer is arranged on the alignment layer.
10. The liquid crystal display of claim 9, wherein the alignment layer has a resistivity of less than 1013Ohm cm.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012650A (en) * | 2021-03-05 | 2021-06-22 | 京东方科技集团股份有限公司 | Backlight driving method and device and display equipment |
| CN115567706A (en) * | 2022-12-06 | 2023-01-03 | 苏州威达智科技股份有限公司 | Display screen refreshing frequency tracking method based on reinforcement learning |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496089A (en) * | 2006-07-31 | 2009-07-29 | 夏普株式会社 | Display controller, display device, display system, and control method for display device |
| CN104134415A (en) * | 2013-05-03 | 2014-11-05 | 联咏科技股份有限公司 | Display method and display system |
| US20140368484A1 (en) * | 2012-02-02 | 2014-12-18 | Sharp Kabushiki Kaisha | Display device and method for driving the same |
| US20150102988A1 (en) * | 2013-10-11 | 2015-04-16 | Japan Display Inc. | Liquid crystal display device |
| CN109616083A (en) * | 2019-01-29 | 2019-04-12 | 惠科股份有限公司 | A kind of driving method, drive module and display device |
| CN109637425A (en) * | 2019-01-29 | 2019-04-16 | 惠科股份有限公司 | A kind of driving method, drive module and display device |
| CN110121743A (en) * | 2016-12-21 | 2019-08-13 | 夏普株式会社 | Display device |
| CN111554218A (en) * | 2020-04-24 | 2020-08-18 | 昆山国显光电有限公司 | Display parameter determination method and device and display equipment |
-
2020
- 2020-11-04 CN CN202011217704.6A patent/CN112382246B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101496089A (en) * | 2006-07-31 | 2009-07-29 | 夏普株式会社 | Display controller, display device, display system, and control method for display device |
| US20140368484A1 (en) * | 2012-02-02 | 2014-12-18 | Sharp Kabushiki Kaisha | Display device and method for driving the same |
| CN104134415A (en) * | 2013-05-03 | 2014-11-05 | 联咏科技股份有限公司 | Display method and display system |
| US20150102988A1 (en) * | 2013-10-11 | 2015-04-16 | Japan Display Inc. | Liquid crystal display device |
| CN110121743A (en) * | 2016-12-21 | 2019-08-13 | 夏普株式会社 | Display device |
| CN109616083A (en) * | 2019-01-29 | 2019-04-12 | 惠科股份有限公司 | A kind of driving method, drive module and display device |
| CN109637425A (en) * | 2019-01-29 | 2019-04-16 | 惠科股份有限公司 | A kind of driving method, drive module and display device |
| CN111554218A (en) * | 2020-04-24 | 2020-08-18 | 昆山国显光电有限公司 | Display parameter determination method and device and display equipment |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113012650A (en) * | 2021-03-05 | 2021-06-22 | 京东方科技集团股份有限公司 | Backlight driving method and device and display equipment |
| CN115567706A (en) * | 2022-12-06 | 2023-01-03 | 苏州威达智科技股份有限公司 | Display screen refreshing frequency tracking method based on reinforcement learning |
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