CN110288958A - Driving method, driving device and the display device of display panel - Google Patents
Driving method, driving device and the display device of display panel Download PDFInfo
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- CN110288958A CN110288958A CN201910503884.5A CN201910503884A CN110288958A CN 110288958 A CN110288958 A CN 110288958A CN 201910503884 A CN201910503884 A CN 201910503884A CN 110288958 A CN110288958 A CN 110288958A
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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
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2320/00—Control of display operating conditions
- G09G2320/02—Improving the quality of display appearance
- G09G2320/0257—Reduction of after-image effects
Abstract
The invention discloses a kind of driving method of display panel, driving device and display device, the driving method of the display panel is the following steps are included: show the frame per second of picture in detection display panel；Target over-drive value is determined according to the frame per second of the display picture；Display panel is driven according to the target over-drive value.Technical solution of the present invention is able to solve the smear problem that display panel shows picture.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of driving methods of display panel, driving device and display
Device.
Background technique
Liquid crystal display is by applying different driving voltages to liquid crystal molecule, so that liquid crystal molecule is in different directions
Rotation, to show different pictures.However, the rotation due to liquid crystal molecule needs certain response time, response time
It is shorter, show that the smear of picture is slighter, the response time is longer, shows that the smear of picture is more serious.
To solve the smear problem that display panel shows picture, often through actuation techniques (over driver, abbreviation
OD), so that liquid crystal reaches expected deflection direction in a relatively short period of time, i.e., apply one on a display panel and shown than itself
A bigger voltage of the voltage shown, to accelerate the reversal rate of liquid crystal molecule.Overdrive technique is generally by timing control
What device processed was realized, first over-driving look-up table preset in the memory inside sequence controller, when powering on, sequence controller from
Data are read in memory, to calculate over-drive value, and display panel are driven according to over-drive value calculated, for example, when upper
The grayscale of one frame is 32, and the grayscale of present frame is 128,144 grayscale of reality output.
But in practical work process, display panel shows that the frame per second of picture can change, at this moment also with original frame per second
Corresponding over-driving look-up table operation, display effect are poor.
Summary of the invention
The embodiment of the present invention is by providing driving method, driving device and the display device of a kind of display panel, it is intended to solve
Certainly display panel shows the smear problem of picture.
To achieve the above object, the present invention provides a kind of driving method of display panel, the driving side of the display panel
Method is applied to the driving device of display panel, and the driving device of the display panel is set in System on Chip/SoC, the display surface
The driving method of plate the following steps are included:
The frame per second of picture is shown in detection display panel；
Target over-drive value is determined according to the frame per second of the display picture；And
Display panel is driven according to the target over-drive value.
Optionally, described the step of determining target over-drive value according to the frame per second for showing picture, includes:
Yield value is calculated according to the frame per second of the display picture；
Target over-drive value is determined according to the yield value.
Optionally, described the step of calculating yield value according to the frame per second for showing picture, includes:
The frame per second of the display picture and the ratio of preset frame rate are calculated, using the ratio as yield value.
Optionally, described the step of determining target over-drive value according to the frame per second for showing picture, includes:
Judge whether the frame per second of the display picture is consistent with preset frame rate；
When the frame per second of the display picture is consistent with preset frame rate, obtained and the default frame from over-driving look-up table
The corresponding over-drive value of rate；And
Using the over-drive value as target over-drive value.
Optionally, after the step of frame per second according to the display picture determines target over-drive value, further includes:
The target over-drive value is stored to over-driving look-up table.
To achieve the above object, the present invention also provides a kind of driving device of display panel, the drivings of the display panel
Device is set in System on Chip/SoC, and the driving device of the display panel includes:
Frame per second detection device is configured as showing the frame per second of picture in detection display panel；
Computing device is configured as determining target over-drive value according to the frame per second of the display picture, according to the target
Over-drive value drives display panel.
Optionally, the computing device includes:
Gain value calculation apparatus is configured as calculating yield value according to the frame per second of the display picture
Over-drive value computing device is configured as calculating target over-drive value according to the yield value.
Optionally, the computing device includes:
Judgment means are configured as judging whether the frame per second of the display picture is consistent with preset frame rate；
Acquisition device is configured as when the frame per second of the display picture is consistent with preset frame rate, from over-driving look-up table
It is middle to obtain over-drive value corresponding with the preset frame rate, and using the over-drive value as target over-drive value.
Optionally, the driving device of the display panel further include:
Storage device is configured as storing the target over-drive value to over-driving look-up table.
To achieve the above object, the present invention also provides a kind of display device, the display device includes institute any one of as above
Driving device, System on Chip/SoC, control circuit board and the display panel for the display panel stated, the driving device of the display panel
It is set in the System on Chip/SoC, the System on Chip/SoC is electrically connected with the control circuit board with the display panel.
Technical solution of the present invention shows the frame per second of picture by detecting display panel, occurs in the frame per second of display picture
When variation, target over-drive value is determined according to the frame per second of display picture, and display surface is driven with identified target over-drive value
Plate.That is technical solution of the present invention can change, the over-drive value of adjust automatically display panel according to the frame per second of display picture,
Guarantee that display panel all has good display effect under different frame per second.
Detailed description of the invention
Fig. 1 is that the invention shows the flow diagrams of one embodiment of driving method of panel；
The refinement flow diagram that Fig. 2 is step S2 in Fig. 1；
Fig. 3 is another refinement flow diagram of step S2 in Fig. 1；
Fig. 4 is that the invention shows the structural schematic diagrams of one embodiment of driving device of panel；
Fig. 5 is the structural block diagram of an embodiment of computing device in Fig. 4；
Fig. 6 is the structural block diagram of another embodiment of computing device in Fig. 4.
Specific embodiment
It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not intended to limit the present invention.
The primary solutions of the embodiment of the present invention are: the frame per second of picture is shown in detection display panel；According to described aobvious
Show that the frame per second of picture determines target over-drive value；Display panel is driven according to the target over-drive value.
Technical solution of the present invention shows the frame per second of picture by detecting display panel, occurs in the frame per second of display picture
When variation, target over-drive value is determined according to the frame per second of display picture, and display surface is driven with identified target over-drive value
Plate guarantees that display panel all has good display effect under different frame per second.
Technical solution of the present invention, the driving method of the display panel is applied to the driving device of display panel, described
The driving device of display panel is set in System on Chip/SoC, i.e., the calculation processing of over-drive value is realized in System on Chip/SoC, described
System on Chip/SoC is chosen as SOC chip, is a kind of chip of integrated circuit.The driving device of display panel is set to by the present invention
It unites in chip, and the memory of the large capacity using System on Chip/SoC, over-driving look-up table is stored in the memory of System on Chip/SoC
In, to save the memory space of sequence controller in display device, reduce the cost of sequence controller.The drive of the display panel
Dynamic device includes frame per second detection device 20, computing device 30, storage device 40.Wherein, the driving device of the display panel is also
Including data processing equipment 50, such as RGB data processing unit and data conversion device 60, such as decoding IC.
The structure of driving device based on above-mentioned display panel proposes that the invention shows the implementations of the driving method of panel
Example.
Referring to Fig.1, the display panel driving method the following steps are included:
Step S1 detects the frame per second that picture is shown in display panel 10；
The frame per second of the display picture indicates the refreshing frequency of display picture, the i.e. refreshing frequency of two frames of front and back.Pass through inspection
The frame per second for surveying display picture, when showing that the frame per second of picture changes, the adjustment over-drive value of the system property of can adapt to, to protect
The quality of card display picture.The frame per second that the present embodiment passes through the detection display picture of frame per second detection device 20 in System on Chip/SoC.
Step S2 determines target over-drive value according to the frame per second of the display picture；
The target over-drive value can be overdrive grayscale value or overdrive voltage value, for driving display panel,
Show that display panel 10 to correspond to grayscale.It, can be true according to the frame per second of display picture after the frame per second for detecting display picture
Set the goal over-drive value, for example, if display picture frame per second there is no variation, can be from the memory of System on Chip/SoC
Over-driving look-up table determines corresponding over-drive value.Specifically, in one embodiment, the step S2 includes: referring to Fig. 2
Step S21 calculates yield value according to the frame per second of the display picture；
The yield value is the ratio for showing the frame per second and preset frame rate of picture.The preset frame rate, for display picture
Normal frame rate, that is, variation before refreshing frequency, for example, if display picture refreshing frequency before variation be 60Hz,
Preset frame rate is 60Hz, if the refreshing frequency of display picture is 50Hz before variation, the preset frame rate is 50Hz.Passing through will
The frame per second and preset frame rate of the display picture detected carry out ratio calculation, can be obtained yield value.It, can be true by yield value
Surely show that the frame per second of picture is higher or relatively low, for example, if the normal refresh frequency of display picture is 60Hz, and it is detected
The refreshing frequency of display picture be also 60Hz, illustrating to show the refreshing frequency of picture, no change has taken place, then yield value is 1.
Step S22 determines target over-drive value according to the yield value.
After obtaining yield value, further, the calculation formula of over-drive value: gray_newf_od=can be passed through
(gray_f_od-gray_cur) * gain+gray_cur determines target over-drive value；Wherein, the gray_newf_od is mesh
Over-drive value is marked, the gray_f_od is the corresponding over-drive value of preset frame rate, and the gray_cur is the grayscale of present frame
Value, the gain are yield value.
Optionally, referring to Fig. 3, in one embodiment, step S2 includes:
Step S23 judges whether the frame per second of the display picture is consistent with preset frame rate；
The present embodiment be suitable for the unchanged situation of frame per second, by judge display picture frame per second whether with preset frame rate one
It causes, to judge to show whether the frame per second of picture changes.
Step S24, when the frame per second of the display picture is consistent with preset frame rate, acquisition and institute from over-driving look-up table
State the corresponding over-drive value of preset frame rate；
The over-driving look-up table is to originate grayscale and target gray scale as the two-dimensional array of coordinate, for providing drive
Dynamic value, wherein in order to reduce the data volume of over-driving look-up table, over-driving look-up table does not help grayscale generally, but does
At at equal intervals, such as 8 grayscale intervals, 16 grayscale intervals, 32 grayscale intervals etc..It is consistent with preset frame rate in the frame per second of display picture
When, over-drive value corresponding with preset frame rate, operation letter can be determined from the over-driving look-up table in the memory of System on Chip/SoC
It is single.
Step S25, using the over-drive value as target over-drive value.
Using over-drive value obtained as target over-drive value, i.e., with the over-driving look-up table of the refreshing frequency before variation
Operation.
Wherein, after step S2, further includes:
Step S2a stores the target over-drive value to over-driving look-up table.
It further include that the target is crossed into drive after obtaining target over-drive value in order to the work of normal driving display panel
Dynamic value is stored in over-driving look-up table, and stored device exports after carrying out compression processing, and to save the space of memory, reduction is deposited
The cost of reservoir.
Step S3 drives display panel according to the target over-drive value.
The target over-drive value of over-driving look-up table output needs to handle by RGB data processing unit 50, then by RGB number
According to processing unit 50 by RGB data and target over-drive value after data conversion device 60, such as decoding IC processing, be converted to
The signal for the LVDS V BY ONE format that sequence controller can identify is sent to the timing control in control circuit board 70
Device, sequence controller handle the signal received, switch to the gray scale voltage that the display of display panel 10 needs, aobvious to drive
Show that panel 10 works normally.
Technical solution of the present invention shows the frame per second of picture by detecting display panel 10, in the frame per second hair of display picture
When changing, target over-drive value is determined according to the frame per second of display picture, and drive and show with identified target over-drive value
Panel 10 can effectively solve the problem that display panel 10 shows the smear problem of picture, guarantee display panel 10 under different frame per second
All have good display effect；Also, over-driving look-up table is stored in the memory of System on Chip/SoC, can reduce timing
The cost of controller reduces the cost of display device.
The present invention also provides a kind of driving devices of display panel.
Referring to Fig. 4, the driving device of the display panel is set in System on Chip/SoC, the driving device of the display panel
Include:
Frame per second detection device 20 is configured as showing the frame per second of picture in detection display panel 10；
The frame per second of the display picture indicates the refreshing frequency of display picture, the i.e. refreshing frequency of two frames of front and back.Pass through inspection
The frame per second for surveying display picture, when showing that the frame per second of picture changes, the adjustment over-drive value of the system property of can adapt to, to protect
The quality of card display picture.The frame per second that the present embodiment passes through the detection display picture of frame per second detection device 20 in System on Chip/SoC.
Computing device 30 is configured as determining target over-drive value according to the frame per second of the display picture, according to the mesh
It marks over-drive value and drives display panel 10.
The target over-drive value can be overdrive grayscale value or overdrive voltage value, for driving display panel,
Show that display panel 10 to correspond to grayscale.It, can be true according to the frame per second of display picture after the frame per second for detecting display picture
Set the goal over-drive value, for example, if display picture frame per second there is no variation, can be from the memory of System on Chip/SoC
Over-driving look-up table determines corresponding over-drive value.
Optionally, referring to Fig. 5, in one embodiment, the computing device 30 includes:
Gain value calculation apparatus 301 is configured as calculating yield value according to the frame per second of the display picture；
The yield value is the ratio for showing the frame per second and preset frame rate of picture.The preset frame rate, for display picture
Normal frame rate, that is, variation before refreshing frequency, for example, if display picture refreshing frequency before variation be 60Hz,
Preset frame rate is 60Hz, if the refreshing frequency of display picture is 50Hz before variation, the preset frame rate is 50Hz.Passing through will
The frame per second and preset frame rate of the display picture detected carry out ratio calculation, can be obtained yield value.It, can be true by yield value
Surely show that the frame per second of picture is higher or relatively low, for example, if the normal refresh frequency of display picture is 60Hz, and it is detected
The refreshing frequency of display picture be also 60Hz, illustrating to show the refreshing frequency of picture, no change has taken place, then yield value is 1.
Over-drive value computing device 302 is configured as calculating target over-drive value according to the yield value.
After obtaining yield value, further, the calculation formula of over-drive value: gray_newf_od=can be passed through
(gray_f_od-gray_cur) * gain+gray_cur determines target over-drive value；Wherein, the gray_newf_od is mesh
Over-drive value is marked, the gray_f_od is the corresponding over-drive value of preset frame rate, and the gray_cur is the grayscale of present frame
Value, the gain are yield value.
Optionally, referring to Fig. 6, in one embodiment, the computing device 30 includes:
Judgment means 303 are configured as judging whether the frame per second of the display picture is consistent with preset frame rate；
The present embodiment be suitable for the unchanged situation of frame per second, by judge display picture frame per second whether with preset frame rate one
It causes, to judge to show whether the frame per second of picture changes.
Acquisition device 304 is configured as searching when the frame per second of the display picture is consistent with preset frame rate from overdriving
Over-drive value corresponding with the preset frame rate is obtained in table, and using the over-drive value as target over-drive value.
The over-driving look-up table is to originate grayscale and target gray scale as the two-dimensional array of coordinate, for providing drive
Dynamic value, wherein in order to reduce the data volume of over-driving look-up table, over-driving look-up table does not help grayscale generally, but does
At at equal intervals, such as 8 grayscale intervals, 16 grayscale intervals, 32 grayscale intervals etc..It is consistent with preset frame rate in the frame per second of display picture
When, over-drive value corresponding with preset frame rate is determined from the over-driving look-up table in the memory of System on Chip/SoC.It will be obtained
Over-drive value is as target over-drive value, i.e., with the over-driving look-up table operation of the refreshing frequency before variation.
Wherein, the driving device of the display panel further include:
Storage device 40 is configured as storing the target over-drive value to over-driving look-up table.
It further include that the target is crossed into drive after obtaining target over-drive value in order to the work of normal driving display panel
Dynamic value is stored in over-driving look-up table, and stored device exports after carrying out compression processing, and to save the space of memory, reduction is deposited
The cost of reservoir.
The target over-drive value of over-driving look-up table output needs to handle by RGB data processing unit 50, then by RGB number
According to processing unit 50 by RGB data and target over-drive value after data conversion device 60, such as decoding IC processing, be converted to
The signal for the LVDS V BY ONE format that sequence controller can identify is sent to the timing control in control circuit board 70
Device, sequence controller handle the signal received, become the gray scale voltage that the display of display panel 10 needs, aobvious to drive
Show that panel 10 works normally.
Technical solution of the present invention shows the frame per second of picture by detecting display panel 10, in the frame per second hair of display picture
When changing, target over-drive value is determined according to the frame per second of display picture, and drive and show with identified target over-drive value
Panel 10 can effectively solve the problem that display panel 10 shows the smear problem of picture, guarantee display panel 10 under different frame per second
All have good display effect；Also, over-driving look-up table is stored in the memory of System on Chip/SoC, can reduce timing
The cost of controller reduces the cost of display device.
The present invention also provides a kind of display device, the display device includes the drive of described in any item display panels as above
Dynamic device, System on Chip/SoC, control circuit board 70 and display panel 10, the driving device of the display panel are set to the system
It unites in chip, the System on Chip/SoC is electrically connected with the control circuit board with the display panel.
Specific work process are as follows: RGB data and configuration information, such as target are crossed drive by the over-driving device of display panel
The signal that dynamic value is converted to LVDS the V BY ONE format that sequence controller can identify is sent in control circuit board 70
Sequence controller, sequence controller handles the signal received, become the gray scale voltage that display panel display needs,
To drive display panel to work normally.
The display device of the present embodiment can be the display device that television set, tablet computer, mobile phone etc. have display panel.
The display panel of the present embodiment can be following any: liquid crystal display panel, QLED display panel, is turned round OLED display panel
Qu Xianglie (Twisted Nematic, TN) or super twisted nematic (Super Twisted Nematic, STN) type, plane conversion
(In-Plane Switching, IPS) type, vertical orientation (Vertical Alignment, VA) type, curved face type panel or its
His display panel.
The foregoing is merely alternative embodiments of the invention, are not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of driving method of display panel, which is characterized in that the driving method of the display panel is applied to display panel
Driving device, the driving device of the display panel is set in System on Chip/SoC, and the driving method of the display panel includes
Following steps:
The frame per second of picture is shown in detection display panel；
Target over-drive value is determined according to the frame per second of the display picture；And
Display panel is driven according to the target over-drive value.
2. the driving method of display panel as described in claim 1, which is characterized in that the frame according to the display picture
Rate determines that the step of target over-drive value includes:
Yield value is calculated according to the frame per second of the display picture；
Target over-drive value is determined according to the yield value.
3. the driving method of display panel as claimed in claim 2, which is characterized in that the frame according to the display picture
Rate calculate yield value the step of include:
The frame per second of the display picture and the ratio of preset frame rate are calculated, using the ratio as yield value.
4. the driving method of display panel as described in claim 1, which is characterized in that the frame according to the display picture
Rate determines that the step of target over-drive value includes:
Judge whether the frame per second of the display picture is consistent with preset frame rate；
When the frame per second of the display picture is consistent with preset frame rate, obtained and the preset frame rate pair from over-driving look-up table
The over-drive value answered；And
Using the over-drive value as target over-drive value.
5. the driving method of display panel as described in any one of claims 1 to 3, which is characterized in that described according to described aobvious
After showing the step of frame per second of picture determines target over-drive value, further includes:
The target over-drive value is stored to over-driving look-up table.
6. a kind of driving device of display panel, which is characterized in that the driving device of the display panel is set to System on Chip/SoC
Interior, the driving device of the display panel includes:
Frame per second detection device is configured as showing the frame per second of picture in detection display panel；
Computing device is configured as determining target over-drive value according to the frame per second of the display picture, crosses drive according to the target
Dynamic value driving display panel.
7. the driving device of display panel as claimed in claim 6, which is characterized in that the computing device includes:
Gain value calculation apparatus is configured as calculating yield value according to the frame per second of the display picture
Over-drive value computing device is configured as calculating target over-drive value according to the yield value.
8. the driving device of display panel as claimed in claim 6, which is characterized in that the computing device includes:
Judgment means are configured as judging whether the frame per second of the display picture is consistent with preset frame rate；
Acquisition device is configured as obtaining from over-driving look-up table when the frame per second of the display picture is consistent with preset frame rate
Over-drive value corresponding with the preset frame rate is taken, and using the over-drive value as target over-drive value.
9. the driving device of display panel as described in any one of claim 6 to 7, which is characterized in that the drive of the display panel
Dynamic device further include:
Storage device is configured as storing the target over-drive value to over-driving look-up table.
10. a kind of display device, which is characterized in that the display device includes such as the described in any item displays of claim 6 to 9
Driving device, System on Chip/SoC, control circuit board and the display panel of panel, the driving device of the display panel are set to institute
It states in System on Chip/SoC, the System on Chip/SoC is electrically connected with the control circuit board with the display panel.
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| CN111833827A (en) * | 2020-07-28 | 2020-10-27 | 重庆惠科金渝光电科技有限公司 | Method for determining overdrive voltage, display panel and computer readable storage medium |
| WO2024060738A1 (en) * | 2022-09-22 | 2024-03-28 | 惠州视维新技术有限公司 | Over-driver apparatus and method, and display apparatus |
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