CN114360463B

CN114360463B - Driving and controlling assembly of display panel, display device, driving method and storage medium

Info

Publication number: CN114360463B
Application number: CN202111446679.3A
Authority: CN
Inventors: 杨文武; 李建雷; 李荣荣
Original assignee: HKC Co Ltd; Chongqing HKC Optoelectronics Technology Co Ltd
Current assignee: HKC Co Ltd; Chongqing HKC Optoelectronics Technology Co Ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2023-02-03
Anticipated expiration: 2041-11-30
Also published as: CN114360463A

Abstract

The application discloses drive and control subassembly, display device, drive method and storage medium of display panel, wherein, this drive and control subassembly includes: the control unit comprises a color temperature adjusting subunit, wherein the color temperature adjusting subunit is used for receiving the video frame sent by the external processor, responding to the first refresh rate of the currently received video frame in one of at least two preset frequency intervals, and determining one of at least two color temperature adjusting parameters set corresponding to the at least two preset frequency intervals; and the driving unit is coupled with the color temperature adjusting subunit and the external light-emitting unit, and is used for determining the driving voltage of the power supply signal correspondingly output by the driving unit based on the currently determined color temperature adjusting parameter so as to drive the light-emitting unit to display the video frame. In this way, this application can carry out the colour temperature regulation that becomes more meticulous in real time according to display panel's display characteristic to realize higher quality display effect, and convenient and practical, the reliability is high, and the realization cost is lower with the degree of difficulty.

Description

Driving and controlling assembly of display panel, display device, driving method and storage medium

Technical Field

The present disclosure relates to the field of display panel technologies, and in particular, to a driving and controlling assembly, a display device, a driving method, and a storage medium for a display panel.

Background

With the development of display technology, flat display devices such as liquid crystal displays have advantages such as high image quality, power saving, thin body, and wide application range, and thus are widely used in various consumer electronics products such as mobile phones, televisions, personal digital assistants, digital cameras, notebook computers, and desktop computers, and are becoming the mainstream of display devices.

However, as the functions of the display panel become more and more abundant and diversified, higher and higher requirements are provided for the display quality that can be realized by the display panel. The ACC (Color temperature adjustment) technique reduces Color temperature drift by independently adjusting a gamma curve of a pixel, and is an important means for improving display quality of a display panel.

However, the color temperature adjustment corresponding to the existing ACC technology is usually fixed at a set value, and cannot be performed with the change of the display scene, so that the improvement of the display effect is greatly restricted.

Disclosure of Invention

The technical problem mainly solved by the application is to provide a driving and controlling assembly, a display device, a driving method and a storage medium of a display panel, and the problem that in the prior art, the driving and controlling assembly of the display panel cannot perform refined color temperature adjustment in real time so as to cause poor display effect can be solved.

In order to solve the technical problem, the application adopts a technical scheme that: provided is a driving and controlling assembly of a display panel, wherein the driving and controlling assembly includes: the control unit comprises a color temperature adjusting subunit, wherein the color temperature adjusting subunit is used for receiving the video frame sent by the external processor, responding to the first refresh rate of the currently received video frame in one of at least two preset frequency intervals, and determining one of at least two color temperature adjusting parameters set corresponding to the at least two preset frequency intervals; and the driving unit is coupled with the color temperature adjusting subunit and the external light-emitting unit, and is used for determining the driving voltage of the power supply signal correspondingly output by the driving unit based on the currently determined color temperature adjusting parameter so as to drive the light-emitting unit to display the video frame.

The driving and controlling component further comprises a first storage unit, the first storage unit is coupled with the color temperature adjusting subunit, the first storage unit stores at least two first mapping tables of corresponding relations between preset frequency intervals and at least two color temperature adjusting parameters, and the color temperature adjusting subunit can determine the color temperature adjusting parameters corresponding to the first refreshing rate according to the first mapping tables.

The control unit further comprises an over-frequency adjusting subunit, wherein the over-frequency adjusting subunit is coupled with the color temperature adjusting subunit and the driving unit, and is used for responding to one of the at least two preset frequency intervals of which the first refresh rate is located, determining one of at least two preset over-frequency parameters set corresponding to the at least two preset frequency intervals, and obtaining the over-frequency adjusting parameter based on the second refresh rate of the video frame received at the last moment and the currently determined preset over-frequency parameter, so that the driving unit determines the driving voltage of the power supply signal correspondingly output by the driving unit based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter.

The driving and controlling assembly further comprises a second storage unit, the second storage unit is coupled with the over-frequency adjusting subunit, the second storage unit stores a second mapping table of corresponding relations between at least two preset frequency intervals and at least two preset over-frequency parameters, and the over-frequency adjusting subunit can determine the preset over-frequency parameters corresponding to the first refresh rate according to the second mapping table.

In order to solve the above technical problem, the present application adopts another technical solution: there is provided a display device, wherein the display device includes a display panel and the driving and controlling component as described in any one of the above, the driving and controlling component is coupled to the display panel and is used for driving the light emitting unit of the display panel to emit light.

In order to solve the above technical problem, the present application adopts another technical solution: provided is a driving method of a display panel, wherein the driving method includes: receiving a video frame sent by an external processor; in response to a first refresh rate of a currently received video frame being in one of at least two preset frequency intervals, determining one of at least two color temperature adjustment parameters set corresponding to the at least two preset frequency intervals; and determining a driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjusting parameter so as to drive the display panel to display the video frame.

Before the step of receiving the video frame sent by the external processor, the method further comprises: establishing a first mapping table based on the corresponding relation between at least two preset frequency intervals and at least two color temperature adjusting parameters; the step of determining one of the color temperature adjustment parameters set corresponding to at least two preset frequency intervals in response to the first refresh rate of the currently received video frame being in one of the at least two preset frequency intervals, includes: and responding to the first refresh rate of the currently received video frame in one of at least two preset frequency intervals, and determining a color temperature adjusting parameter corresponding to the first refresh rate according to a first mapping table.

After the step of determining one of the color temperature adjustment parameters set corresponding to the at least two preset frequency intervals in response to that the first refresh rate of the currently received video frame is located in one of the at least two preset frequency intervals, and before the step of determining the driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjustment parameter to drive the display panel to display the video frame, the method further includes: acquiring a second refresh rate of the video frame received at the previous moment; in response to the first refresh rate being in one of the at least two preset frequency intervals, determining one of at least two preset over-frequency parameters set corresponding to the at least two preset frequency intervals; obtaining an over-frequency adjusting parameter based on the second refresh rate and the currently determined preset over-frequency parameter; the step of determining a driving voltage corresponding to a power signal output to the display panel based on the currently determined color temperature adjustment parameter to drive the display panel to display a video frame includes: and determining a driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter so as to drive the display panel to display the video frame.

Before the step of receiving the video frame sent by the external processor, the method further comprises: establishing a second mapping table based on the corresponding relation between at least two preset frequency intervals and at least two preset over-frequency parameters; the step of determining one of at least two preset turbo parameters set corresponding to at least two preset frequency intervals in response to the first refresh rate being in one of the at least two preset frequency intervals, includes: and in response to the first refresh rate being in one of at least two preset frequency intervals, determining a preset over-frequency parameter corresponding to the first refresh rate according to the second mapping table.

In order to solve the above technical problem, the present application adopts another technical solution: there is provided a computer-readable storage medium having stored thereon program instructions that, when executed by a processor, implement the driving method as described in any one of the above.

The beneficial effect of this application is: different from the prior art, the control unit in the driving and controlling assembly provided by the present application specifically includes a color temperature adjusting subunit, and the color temperature adjusting subunit is configured to receive a video frame sent by an external processor, so that a first refresh rate of the currently received video frame is located in one of at least two preset frequency intervals, and one of at least two color temperature adjusting parameters set corresponding to the at least two preset frequency intervals can be determined, so that the driving unit determines, based on the currently determined color temperature adjusting parameter, a driving voltage of a power supply signal correspondingly output by the driving unit, so as to drive the light emitting unit to display the video frame. Therefore, the frequency interval is preset through subdivision, at least two color temperature adjusting parameters are correspondingly set, refined color temperature adjustment can be carried out in real time according to the display characteristics of the display panel, namely the specific numerical value of the first refresh rate of each received video frame at each moment, and therefore a better display effect can be achieved, the display device is convenient and practical, high in reliability and low in implementation cost and difficulty.

Drawings

FIG. 1 is a schematic diagram of exemplary gray levels for different refresh rates;

FIG. 2 is a schematic diagram of a driving assembly of a display panel in the prior art;

FIG. 3 is a schematic structural diagram of a first embodiment of the control assembly of the present application;

FIG. 4 is a schematic structural diagram of a second embodiment of the control assembly of the present application;

FIG. 5 is a schematic structural diagram of a third embodiment of the control assembly of the present application;

FIG. 6 is a schematic structural diagram of a fourth embodiment of the control assembly of the present application;

FIG. 7 is a schematic structural diagram of a fifth embodiment of a drive and control assembly of the present application;

FIG. 8 is a logic diagram of the operation of the driving and controlling assembly in FIG. 7 for adjusting color temperature;

FIG. 9 is a logic diagram of the operation of the override adjustment of the actuation assembly of FIG. 7;

FIG. 10 is a schematic diagram of an embodiment of a display device according to the present application;

fig. 11 is a schematic flow chart of a first embodiment of the driving method of the present application;

fig. 12 is a schematic flow chart of a second embodiment of the driving method of the present application;

fig. 13 is a schematic flow chart of a third embodiment of the driving method of the present application;

fig. 14 is a schematic flow chart of a fourth embodiment of the driving method of the present application;

FIG. 15 is a block diagram of an embodiment of a computer readable storage medium of the present application.

Description of reference numerals: 10/20/30/40/50, a driving and controlling component; 11/21/31/41, control unit; 111/211/311/411, color temperature adjusting subunit; 12/22/32/42/52, driving unit; 23. a first storage unit; 312/412, over-frequency regulation subunit; 43. a second storage unit; 2. a processor; 3. a light emitting unit; 51. a logic driver board; 52. a drive unit; 53. a storage unit; 511. a timing unit; 512. an input port; 513. a data processing unit; 514. an output port; 515. a detection judgment unit; 516. a color temperature adjusting/overclocking adjusting unit; 521. a scan driving circuit; 522. a drive circuit; 4. a system chip; 5. a display screen; 60. a display device; 61. a display panel; 62. a drive control assembly; 111. a computer-readable storage medium; 1111. program instructions.

Detailed Description

The inventor finds that the FreeSesync (dynamic refresh rate) technology is a technology for dynamically updating the refresh rate through an embedded display port and an external display port, and the FreeSesync technology is particularly applied to a display card to solve the communication problem between a computer processor and a display, so that the tearing and shaking phenomena of pictures in a game can present a smooth feeling with little effort.

The V-SYNC (synchronous refresh) technique is to force the display to regularly refresh the picture drawn in the graphic card to achieve the most efficient refresh frequency, but when the graphic card has not completed a new picture, a delay is generated by skipping the refresh. By using FreeSeync technology, the display card and the display are dynamically synchronized, so that the torn picture and the pause condition can not exist continuously.

Another important factor affecting the display quality of the display panel is smear, and the phenomenon of smear specifically refers to dragging the content of the screen and leaving a shadow when the screen is dragged.

There are two main smear impact factors, one being the refresh rate, which is one of the simplest examples. The picture is moved 5 cm across the screen in 1/24 second. If the refresh rate is 24 frames, which are the two end points of the line, one more picture is refreshed. But if the refresh rate is 48 frames, two more pictures are in the middle and the transition is smoother. If 96 frames, 4 frames are brushed. And so on. The higher the refresh rate, the smoother the transition per second. We draw a simple conclusion. The higher the refresh rate, the smoother the picture. The slower the object moves, the smoother the picture. Therefore, the difference between the picture and the picture in unit time is small enough to realize smooth operation.

Secondly, the response speed determines the severity of the smear, and each sub-pixel receives the command of turning on or off the picture, and is not turned on or off immediately but has afterglow effect. For example, a tower is moving in a picture, and the method is that each time a refresh is performed, the tower is turned on and off from a first position and then turned on and off from a second position, so that the tower is moved from the first position to the second position. Then the question comes, how slow to go out? Then the shadow divides into two parts. That is, the 3 rd position is already on, and the first position is not yet completely off, which is smeared.

Wherein, the OD (over drive) technology can greatly reduce the response time of the screen. The basic principle is as follows: assuming that one color conversion occurs, the time required is 10ms regardless of which color is converted from which color. The color value is now converted from 0 to 50. But the refresh time is only 6.9ms, which can only be converted to 50 x (6.9/10) =34.5 if the target value is 50. Thus, it is clear that the rendering requirement cannot be satisfied, and the Overdrive technique sets the target value to 50 × (10/6.9) =72.4, so that the color value can be converted from 0 to 50 in 6.9 ms.

ACC (color temperature adjustment) is a technique for adjusting the color temperature of liquid crystal by independently adjusting RGB (red, green, blue pixel) gamma curves to reduce color temperature drift.

After turning on the Freesync function on a display panel, the computer will perform dynamic refresh frequency adjustment between certain frequency segments (e.g. 48-144 Hz), and the lower the refresh rate, the more serious the smear phenomenon will be perceived, for understanding, the following examples are provided:

as shown in fig. 1, fig. 1 is a schematic diagram of gray scale example with different refresh rates, when the refresh rate is 60Hz, the difference of gray scale voltage between every two adjacent video frames is changed to 6V, and when 120Hz, the difference of gray scale voltage between two frames is changed to 2V compared with two frames at 60Hz, so that when the refresh rate is low, the rotation angle of liquid crystal needs to be large, the response time is long, and the smear is serious.

Further, as shown in fig. 2, fig. 2 is a schematic structural diagram of a driving assembly of a display panel in the prior art. The driving assembly specifically comprises a logic driving board, a storage unit, a scanning driving circuit and a driving circuit, wherein the logic driving board further comprises an input port, a data processing unit, a time sequence unit, a color temperature adjusting/super-frequency adjusting unit and an output port. The display screen in fig. 2 is specifically a display screen with a fresync function, and when receiving a video frame sent by a system chip, the logic drive board can perform super-frequency adjustment, or super-frequency adjustment and color temperature adjustment based on a refresh rate of the video frame, so that the display screen displays the adjusted video frame through the scan drive circuit and the drive circuit.

Specifically, the OD function, i.e., the overdrive function, is usually turned on only in the low refresh rate state of the current high refresh rate display screen, but the OD function is not turned on in the high refresh rate state and when the fresync function is turned on, so that after the fresync is turned on, the OD function of the driving component cannot be normally turned on due to dynamic change of the refresh rate, which may cause serious display screen smear.

In order to adjust color temperature finely in real time according to display characteristics of a display panel to achieve a better display effect, the application provides a driving and controlling assembly of the display panel, a display device, a driving method and a storage medium. The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive work are within the scope of the present application.

Reference in the specification to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the specification. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 3, fig. 3 is a schematic structural diagram of a driving and controlling assembly according to a first embodiment of the present application. In this embodiment, the driving and controlling assembly 10 specifically includes: a control unit 11 and a drive unit 12.

The driving and controlling assembly 10 provided in the present application can be specifically applied to a display device capable of implementing a fresync function, so as to perform super-frequency adjustment, or super-frequency adjustment and color temperature adjustment on the display device, thereby effectively improving the display effect and reliability of the display device. Of course, in other embodiments, the driving and controlling assembly 10 may also be used in a display device without a fresync function to enable more effective color temperature adjustment, which is not limited by the embodiment.

Specifically, the driving unit 12 further includes a color temperature adjusting subunit 111, and the color temperature adjusting subunit 111 can be used to implement the ACC function, that is, adjust the color temperature of the liquid crystal in the display device in which the driving and controlling assembly 10 is embedded, so as to reduce the color temperature drift by independently adjusting the gamma curve of the pixel, thereby achieving a higher display effect.

The color temperature adjustment subunit 111 is specifically configured to receive a video frame sent by the external processor 2, that is, a system chip of the display device, and further obtain a first refresh rate of the video frame, so as to detect which of at least two preset frequency intervals the first refresh rate of the currently received video frame is located.

It can be understood that, in the embodiment, the color temperature adjusting subunit 111 specifically divides the maximum range, where the first refresh rate of the video frame sent by the processor 2 may possibly occur, into at least two value intervals in advance to obtain at least two preset frequency intervals, for example, [ a, B ], (B, C ], and (C, D ]. Wherein the A, B, C, D may be any reasonable one of the refresh frequency values, where the first refresh rate may possibly occur, for example, 48Hz, 60Hz, 120Hz, 360Hz, or any other reasonable combination of values, which is not limited in this application.

Optionally, the number of the preset frequency intervals may be any reasonable number, such as 2, 3, or 6, which is not limited in this application.

Optionally, the step between every two preset frequency intervals, that is, the difference between the upper limit value and the lower limit value of the interval may be the same or different; and each predetermined frequency interval is included in [40hz,360hz ].

Furthermore, a color temperature adjusting parameter is further set corresponding to each preset frequency interval, and at least two color temperature adjusting parameters are in one-to-one correspondence with at least two preset frequency intervals, so that when it is detected that the first refresh rate specifically belongs to which preset frequency interval, the corresponding color temperature adjusting parameter can be uniquely determined.

The driving unit 12 is coupled to the color temperature adjustment subunit 111 and an external light emitting unit 3, so as to determine a driving voltage of the power signal outputted by the driving unit 12 based on the currently determined color temperature adjustment parameter, and to drive the light emitting unit 3 to display the currently received video frame through the power signal corresponding to the currently determined driving voltage.

It can be understood that the color temperature adjustment parameter specifically corresponds to a parameter value for independently adjusting the RGB gamma curve, so as to reduce the color temperature drift of the light emitting unit 3.

It should be noted that gamma means that each pixel in the digital image has a certain brightness, i.e. from black (0) to white (1). These pixel values are the information input into the computer display, so that when the color temperature adjustment parameter is determined, the gray level outputted by the driving unit 12, that is, the driving voltage of the power signal outputted by the driving unit, can be determined.

According to the scheme, the frequency interval is preset through subdivision, at least two color temperature adjusting parameters are correspondingly set, fine color temperature adjustment is carried out in real time according to the display characteristics of the display panel, namely the specific numerical value of the first refresh rate of each received video frame, and accordingly a better display effect can be achieved, convenience and practicability are achieved, reliability is high, and implementation cost and difficulty are low.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a driving and controlling assembly according to a second embodiment of the present application. The driving and controlling assembly in this embodiment is different from the driving and controlling assembly of the first embodiment provided in this application in fig. 3 in that the driving and controlling assembly 20 further includes a first storage unit 23.

Specifically, the first storage unit 23 is coupled to the color temperature adjustment subunit 211, and the first storage unit 23 stores a first mapping table of correspondence between at least two preset frequency intervals and at least two color temperature adjustment parameters. Therefore, when acquiring the video frame and the first refresh rate thereof sent by the processor 2, the color temperature adjusting subunit 211 specifically determines the color temperature adjusting parameter corresponding to the first refresh rate according to the first mapping table, so that the corresponding color temperature adjusting parameter can be acquired more conveniently in the color temperature adjusting process, the operation resource is effectively saved, and the processing efficiency of color temperature adjustment is improved.

In other embodiments, when the color temperature adjusting subunit 211 obtains the video frame and the first refresh rate thereof sent by the processor 2, the color temperature adjusting parameter corresponding to the first refresh rate may also be calculated through any reasonable interval inequality function, which is not limited in this application.

It can be understood that the control unit 21 and the driving unit 22 are the same as the control unit 11 and the driving unit 12 in fig. 3, and specific reference is made to fig. 3 and related text, which are not repeated herein.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a driving and controlling assembly according to a third embodiment of the present application. The driving and controlling assembly in this embodiment is different from the driving and controlling assembly in the first embodiment of the present application in fig. 3 in that the control unit 31 in the driving and controlling assembly 30 further includes an over-frequency adjusting subunit 312.

Specifically, the over-frequency adjusting subunit 312 is coupled to the color temperature adjusting subunit 311 and the driving unit 32, so that when it is determined that the first refresh rate of the currently received video frame is located in one of the at least two preset frequency intervals, the preset over-frequency parameter corresponding to the first refresh rate can be further determined according to a corresponding relationship between the at least two preset frequency intervals and the at least two preset over-frequency parameters.

It can be understood that when the display screen is super-regulated, it is inevitable to obtain the target value of the color value regulation, for example, when the color value needs to be converted from 0 to 50, but the refresh time is only 6.9ms, if the target value is 50, the conversion can only be 50 x (6.9/10) =34.5. This obviously does not satisfy the rendering requirement, and the overdrive technique is to set the target value to 50 × 10/6.9 =72.4, so that the color value can be converted from 0 to 50 in 6.9 ms.

In order to obtain the target value of the overdrive adjustment currently required, the video frame received at the previous time, that is, the second refresh rate of the video data of the previous frame of the current video frame, needs to be further obtained, so that the overdrive adjustment parameter can be obtained according to the above calculation method based on the second refresh rate and the currently determined preset overdrive parameter, and the driving unit 32 can further determine the driving voltage of the power signal correspondingly output by the driving unit 32 based on the currently determined color temperature adjustment parameter and the overdrive adjustment parameter, so as to drive the light emitting unit 3 to display the currently received video frame through the power signal corresponding to the currently determined driving voltage.

According to the scheme, the frequency interval is preset through subdivision, at least two color temperature adjusting parameters and the preset overclocking parameter are correspondingly set, the refined color temperature adjustment and the overclocking adjustment can be carried out in real time according to the display characteristics of the display panel, namely the specific numerical value of the first refresh rate of each video frame received all the time, and therefore a better display effect can be achieved, the convenience and the practicability are realized, the reliability is high, and the realization cost and the difficulty are lower.

And because of can follow the change of the refresh rate of the video frame in real time, carry on the corresponding judgement of presetting the frequency interval frame by frame to carry on colour temperature regulation and overclocking in real time and adjust, also avoided after opening the Freesync function effectively, because of high refresh rate need not open the overclocking, so when the refresh rate dynamic change, the problem that the overclocking function can't be opened, thus can solve the picture smear phenomenon under the low refresh rate effectively, and convenient and practical, it is low to realize the degree of difficulty.

Referring to fig. 6, fig. 6 is a schematic structural diagram of a fourth embodiment of the driving and controlling assembly of the present application. The driving and controlling assembly in this embodiment is different from the driving and controlling assembly of the first embodiment provided in this application in fig. 5 in that the driving and controlling assembly 40 further includes a second storage unit 43.

Specifically, the second storage unit 43 is coupled to the over-frequency adjusting subunit 412, and the second storage unit 43 stores a second mapping table of the correspondence relationship between at least two preset frequency intervals and at least two preset over-frequency parameters. Therefore, when the super-frequency adjusting subunit 412 obtains the video frame and the first refresh rate thereof sent by the processor 2, it specifically determines the preset super-frequency parameter corresponding to the first refresh rate according to the second mapping table, and can more conveniently obtain the corresponding preset super-frequency parameter in the super-frequency adjusting process, and effectively save the operation resources, and improve the processing efficiency of the super-frequency adjustment, so that the preset super-frequency parameter and the second refresh rate of the video frame at the previous time can obtain the super-frequency adjusting parameter, so that the driving unit 42 can determine the driving voltage of the power signal correspondingly output by the driving unit 42 based on the currently determined color temperature adjusting parameter and the super-frequency adjusting parameter, so as to drive the light emitting unit 3 to display the video frame.

In another embodiment, the second storage unit 43 further stores a first mapping table of correspondence between at least two preset frequency intervals and at least two color temperature adjustment parameters, and the color temperature adjustment subunit 411 determines the color temperature adjustment parameter corresponding to the first refresh rate according to the first mapping table when acquiring the video frame and the first refresh rate thereof sent by the processor 2, which is not described herein again.

It can be understood that the control unit 41 is the same as the control unit 31 in fig. 5, and specific reference is made to fig. 5 and related text, which are not repeated herein.

Referring to fig. 7, fig. 7 is a schematic structural diagram of a fifth embodiment of the driving and controlling assembly of the present application.

In the present embodiment, the driving component 50 specifically includes a logic driving board 51, a driving unit 52 and a storage unit 53, the logic driving board 51 further includes an input port 512, a data processing unit 513, a detection and judgment unit 515, a timing unit 511, a color temperature adjustment/over-frequency adjustment unit 516 and an output port 514, and the driving unit 52 further includes a scan driving circuit 521 and a driving circuit 522. The display screen 5 is specifically a display screen 5 with a fresync function, and when receiving a video frame sent by the system chip 4, the logic drive board 511 can perform super-frequency adjustment and color temperature adjustment based on a first refresh rate of the current video frame, so as to further enable the display screen 5 to display the adjusted video frame through the scan drive circuit 521 and the drive circuit 522.

It can be understood that, compared to the third embodiment of the driving and controlling assembly provided in the present application, the logic driving board 51 and the storage unit 53 are equivalent to the control unit 31, the scan driving circuit 521 and the driving circuit 522 are equivalent to the driving unit 32, the color temperature adjusting/super-frequency adjusting unit 516 is equivalent to the color temperature adjusting subunit 311 and the super-frequency adjusting subunit 312, the system chip 4 is equivalent to the processor 2, and the display screen 5 is equivalent to the light emitting unit 3, and specific reference to 5 and related text contents will not be repeated herein.

Specifically, after the driving component 50 opens the fresync function, the refresh rate of the display screen 5 can be dynamically adjusted, that is, adjusted in real time according to the change of the refresh rate of the video frame sent by the system chip 3. At this time, by adding the detecting and determining unit 515, that is, after the refresh rate reaches the preset frequency, the OD function of the color temperature adjusting/super-frequency adjusting unit 516 can be automatically turned on, so as to realize dynamic OD, and the display screen 5 can set a plurality of refresh rates and corresponding OD tables (super-frequency adjusting steps), that is, super-frequency adjusting parameters, as required, so as to improve the smear problem. Meanwhile, a plurality of corresponding ACC tables (color temperature adjustment steps) can be set according to the preset frequency range set by the detection and determination unit 515, that is, color temperature adjustment parameters.

As shown in fig. 8, fig. 8 is a logic diagram of the operation of the driving and controlling component in fig. 7 for adjusting color temperature. The nth frame of original data, that is, the video frame, sent to the logic driver board 51 by the system chip 4 specifically contains a system overall setting, the output timing refresh rate of the logic driver board 51 is determined by a system overall value, and when the logic driver board 51 acquires the refresh rate, the ACC table to be used can be determined according to the refresh rate.

For convenience of description, the refresh rate supported by the display screen 5 is a-D, and 3 tables are divided in advance, that is, ACC table1, ACC table2 and ACC table3, where ACC table1, ACC table2 and ACC table3 correspond to [ a, B ], (B, C ] and (C, D ], respectively, for example, in the ACC table, the gray level of the sub-pixel original data of the display screen 5 corresponds to the actual output gray level of the current frame one by one, and after the ACC table is selected, for example, when the refresh rate of the current N-th (N is a positive integer) frame video frame is determined to belong to the (B, C ] interval, table2 may be selected to directly output the gray level corresponding to the current video frame, that is, the driving voltage value, so as to drive the display screen 5 to display the current video frame.

Further, as shown in fig. 9, fig. 9 is a logic diagram of the operation of the driving and controlling component in fig. 7 for performing the over-frequency adjustment. After data processed by the ACC in the nth frame, that is, a video frame after color temperature adjustment is acquired, an OD table to be used is determined according to a refresh rate of the video frame, for example, when the refresh rate of the video frame belongs to a (B, C) interval, an OD table2 is selected, where the OD table is a gray level of a sub-pixel in a previous frame in a vertical direction and a gray level of a sub-pixel in a corresponding position in the current frame in a horizontal direction, so as to determine a gray level to be actually output by the current video frame according to the two gray level, that is, after the OD table is selected, a level gray level is read from the data processed by the ACC in the nth frame and the stored output data of the N-1 st frame, so as to detect a gray level corresponding to be output by the current video frame, that is a driving voltage value, and further drive the display screen 5 to display the current video frame.

Understandably, under different refresh rates, the optical quality of the display screen 5 needs to be finely adjusted by using different OD and ACC, the display effect is better, and by dividing a plurality of preset frequency intervals and corresponding relations of color temperature adjusting parameters and over-frequency adjusting parameters, the problem of image smear phenomenon under a low refresh rate after the Freesync function is started is effectively solved, and the method is convenient and practical and low in implementation difficulty.

Referring to fig. 10, fig. 10 is a schematic structural diagram of an embodiment of a display device of the present application. In the present embodiment, the display device 60 includes a display panel 61 and a driving component 62, and the driving component 62 is coupled to the display panel 61 and is used for driving a light emitting unit (not shown) of the display panel 61 to emit light. It should be noted that the driving and controlling component 62 described in this embodiment is the driving and controlling component 10, the driving and controlling component 20, the driving and controlling component 30, the driving and controlling component 40, or the driving and controlling component 50 described in any of the above embodiments, and thus, the description thereof is omitted here.

Referring to fig. 11, fig. 11 is a schematic flowchart illustrating a driving method according to a first embodiment of the present application. Specifically, the following steps may be included:

s71: and receiving the video frame sent by the external processor.

It can be understood that the driving method in this embodiment is a method of driving a light emitting unit of a display panel through a driving assembly, so that the light emitting unit correspondingly displays a video frame sent to the driving assembly by a processor. The driving assembly specifically includes a control unit and a driving unit coupled to each other, and the driving assembly is the driving assembly 10, the driving assembly 20, the driving assembly 30, the driving assembly 40, or the driving assembly 50 described in any of the above embodiments, for which specific reference is made to fig. 3-9 and related text, which are not repeated herein.

Specifically, the control unit comprises a color temperature adjusting subunit, and the color temperature adjusting subunit is used for receiving the video frame sent by the external processor.

S72: in response to a first refresh rate of a currently received video frame being located in one of at least two preset frequency intervals, determining one of at least two color temperature adjustment parameters set corresponding to the at least two preset frequency intervals.

Further, after receiving the video frame sent by the processor, the first refresh rate of the video frame is further obtained, so as to detect which of at least two preset frequency intervals the first refresh rate of the currently received video frame is specifically located.

It can be understood that, in this embodiment, the color temperature adjusting subunit specifically divides a maximum possible range of the first refresh rate of the video frame correspondingly sent by the processor into at least two value intervals in advance to obtain at least two preset frequency intervals, for example, [ a, B ], (B, C ], and (C, D ]. Here, A, B, C, D may be any reasonable one of the refresh frequency values that may occur in the first refresh rate, for example, 48Hz, 60Hz, 120Hz, 360Hz, or any other reasonable combination of values, which is not limited in this application.

Furthermore, color temperature adjusting parameters are further arranged on the color temperature adjusting subunit corresponding to each preset frequency interval, and the at least two color temperature adjusting parameters are in one-to-one correspondence with the at least two preset frequency intervals, so that when the preset frequency interval to which the first refresh rate specifically belongs is detected, the corresponding color temperature adjusting parameters can be uniquely determined.

S73: and determining a driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjusting parameter so as to drive the display panel to display the video frame.

Further, after the currently determined color temperature adjustment parameter is obtained, the driving unit may further determine a driving voltage of the power signal correspondingly output by the driving unit based on the currently determined color temperature adjustment parameter, so as to drive the light emitting unit to display the currently received video frame through the power signal corresponding to the currently determined driving voltage.

Referring to fig. 12, fig. 12 is a schematic flowchart illustrating a driving method according to a second embodiment of the present application. The driving method of the present embodiment is a flowchart of a detailed embodiment of the driving method in fig. 11, and the present embodiment includes the following steps:

s81: and establishing a first mapping table based on the corresponding relation between the at least two preset frequency intervals and the at least two color temperature adjusting parameters.

It can be understood that, in order to ensure that the corresponding color temperature adjustment parameters can be obtained more conveniently in the color temperature adjustment process, and the operation resources are effectively saved, and the processing efficiency of color temperature adjustment is improved, the control unit can specifically establish the first mapping table based on the corresponding relationship between the at least two preset frequency intervals and the at least two color temperature adjustment parameters.

In other embodiments, the control unit may further establish a corresponding interval inequality function according to a value range in which the first refresh rate of the video frame sent by the processor may occur, which is not limited in this application.

S82: and receiving the video frame sent by the external processor.

S82 is the same as S71 in fig. 11, and please refer to S71 and the related text description thereof, which are not repeated herein.

S83: and responding to the first refresh rate of the currently received video frame in one of at least two preset frequency intervals, and determining a color temperature adjusting parameter corresponding to the first refresh rate according to a first mapping table.

Therefore, when the first refresh rate of the currently received video frame is determined to be located in one of the at least two preset frequency intervals, the control unit may determine the color temperature adjustment parameter corresponding to the first refresh rate according to the first mapping table.

S84: and determining a driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjusting parameter so as to drive the display panel to display the video frame.

S84 is the same as S73 in fig. 11, and please refer to S73 and the related text description thereof, which are not repeated herein.

Further, in an embodiment, the step S81 may be after the step S82 and before the step S83, which is not limited in this application.

Referring to fig. 13, fig. 13 is a schematic flow chart of a driving method according to a third embodiment of the present application. The driving method of the present embodiment is a flowchart of a detailed embodiment of the driving method in fig. 11, and the present embodiment includes the following steps:

s91: and receiving the video frame sent by the external processor.

S92: in response to a first refresh rate of a currently received video frame being located in one of at least two preset rate intervals, determining one of at least two color temperature adjustment parameters set corresponding to the at least two preset frequency intervals.

S91 and S92 are the same as S71 and S72 in fig. 11, and please refer to S71 and S72 and the related text description thereof, which are not repeated herein.

S93: and acquiring a second refresh rate of the video frame received at the last moment.

Specifically, when the video frame received at the previous time, that is, the video data of the previous frame of the current video frame, is obtained, the second refresh rate of the video frame at the previous time is synchronously obtained.

S94: and in response to the first refresh rate being in one of the at least two preset frequency intervals, determining one of at least two preset over-frequency parameters set corresponding to the at least two preset frequency intervals.

Further, when it is determined that the first refresh rate of the currently received video frame is located in one of the at least two preset frequency intervals, the preset over-frequency parameter corresponding to the first refresh rate is determined according to the corresponding relationship between the at least two preset frequency intervals and the at least two preset over-frequency parameters.

S95: and obtaining an overclocking adjusting parameter based on the second refresh rate and the currently determined preset overclocking parameter.

And further, after the second refresh rate and the currently determined preset overclocking parameter are obtained, an overclocking adjusting parameter can be obtained through calculation according to a corresponding calculation mode.

S96: and determining a driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter so as to drive the display panel to display the video frame.

Still further, the driving unit can determine the driving voltage of the power signal correspondingly output by the driving unit based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter, so as to drive the light emitting unit to display the currently received video frame through the power signal corresponding to the currently determined driving voltage.

According to the scheme, the frequency interval is preset through subdivision, at least two color temperature adjusting parameters and the preset overclocking parameter are correspondingly set, so that refined color temperature adjustment and overclocking adjustment can be carried out in real time according to the display characteristics of the display panel, namely the specific numerical value of the first refresh rate of each received video frame at each moment, a higher-quality display effect can be achieved, convenience and practicability are realized, the reliability is high, and the implementation cost and the difficulty are lower.

Referring to fig. 14, fig. 14 is a schematic flow chart of a driving method according to a fourth embodiment of the present application. The driving method of the present embodiment is a flowchart of a detailed embodiment of the driving method in fig. 13, and the present embodiment includes the following steps:

s101: and establishing a second mapping table based on the corresponding relation between the at least two preset frequency intervals and the at least two preset over-frequency parameters.

It can be understood that, in order to ensure that the corresponding preset over-frequency parameters can be obtained more conveniently in the over-frequency adjustment process, the operation resources are effectively saved, and the processing efficiency of color temperature adjustment is improved, the control unit can specifically establish the second mapping table based on the corresponding relationship between at least two preset frequency intervals and at least two preset over-frequency parameters.

S102: and receiving the video frame sent by the external processor.

S103: in response to a first refresh rate of a currently received video frame being located in one of at least two preset frequency intervals, determining one of at least two color temperature adjustment parameters set corresponding to the at least two preset frequency intervals.

S104: and acquiring a second refresh rate of the video frame received at the last moment.

S102, S103, and S104 are the same as S91, S92, and S93 in fig. 13, and please refer to S91, S92, and S93 and the related text descriptions thereof, which are not described herein again.

S105: and in response to the first refresh rate being in one of at least two preset frequency intervals, determining a preset over-frequency parameter corresponding to the first refresh rate according to the second mapping table.

Specifically, when it is determined that the first refresh rate of the currently received video frame is located in one of the at least two preset frequency intervals, the control unit may determine the preset over-frequency parameter corresponding to the first refresh rate according to the second mapping table.

S106: and obtaining an overclocking adjusting parameter based on the second refresh rate and the currently determined preset overclocking parameter.

S107: and determining a driving voltage corresponding to the power supply signal output to the display panel based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter so as to drive the display panel to display the video frame.

S106 and S107 are the same as S95 and S96 in fig. 11, and please refer to S95 and 986 and the related text descriptions, which are not repeated herein.

Referring to fig. 15, fig. 15 is a schematic structural diagram of an embodiment of a computer readable storage medium according to the present application. The computer-readable storage medium 111 stores program instructions 1111 capable of being executed by the processor, the program instructions 1111 being used to implement the driving method of any one of the above.

In the several embodiments provided in the present application, it should be understood that the disclosed method and apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a module or a unit is merely one type of logical division, and an actual implementation may have another division, for example, a unit or a component may be combined or integrated with another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of devices or units through some interfaces, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on a network unit. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The beneficial effect of this application is: different from the prior art, the control unit in the driving and controlling assembly provided by the present application specifically includes a color temperature adjusting subunit, and the color temperature adjusting subunit is configured to receive a video frame sent by an external processor, so that a first refresh rate of the currently received video frame is located in one of at least two preset frequency intervals, and one of at least two color temperature adjusting parameters set corresponding to the at least two preset frequency intervals can be determined, so that the driving unit determines, based on the currently determined color temperature adjusting parameter, a driving voltage of a power supply signal correspondingly output by the driving unit, so as to drive the light emitting unit to display the video frame. Therefore, the preset frequency interval is subdivided, and at least two color temperature adjusting parameters are correspondingly set, so that refined color temperature adjustment can be performed in real time according to the display characteristics of the display panel, namely the specific numerical value of the first refresh rate of the video frame received at each moment, a better display effect can be achieved, and the method is convenient and practical, high in reliability, low in implementation cost and low in difficulty.

The above description is only for the purpose of illustrating embodiments of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings of the present application or are directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims

1. A driving and controlling assembly of a display panel, the driving and controlling assembly comprises a control unit and a driving unit, and is characterized in that,

the control unit comprises a color temperature adjusting subunit and an over-frequency adjusting subunit which are coupled with each other, the color temperature adjusting subunit is used for receiving a video frame sent by an external processor, so as to respond that a first refresh rate of the currently received video frame is located in one of at least two preset frequency intervals, the color temperature adjusting subunit determines one of at least two color temperature adjusting parameters set corresponding to the at least two preset frequency intervals, the over-frequency adjusting subunit determines one of the at least two preset over-frequency parameters set corresponding to the at least two preset frequency intervals, and the over-frequency adjusting parameter is obtained based on a second refresh rate of the video frame received at the last moment and the currently determined preset over-frequency parameter;

the driving unit is coupled to the color temperature adjusting subunit, the over-frequency adjusting subunit and the external light emitting unit, so as to determine a driving voltage of a power supply signal correspondingly output by the driving unit based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter, and to drive the light emitting unit to display the video frame.

2. The drive assembly of claim 1,

the driving and controlling assembly further comprises a first storage unit, the first storage unit is coupled to the color temperature adjusting subunit, the first storage unit stores a first mapping table of correspondence between at least two preset frequency intervals and at least two color temperature adjusting parameters, and the color temperature adjusting subunit can determine the color temperature adjusting parameters corresponding to the first refresh rate according to the first mapping table.

3. The drive assembly of claim 1,

the driving and controlling assembly further comprises a second storage unit, the second storage unit is coupled to the over-frequency adjusting subunit, the second storage unit stores a second mapping table of correspondence between at least two preset frequency intervals and at least two preset over-frequency parameters, and the over-frequency adjusting subunit can determine the preset over-frequency parameters corresponding to the first refresh rate according to the second mapping table.

4. A display device, comprising a display panel and the driving assembly of any one of claims 1 to 3, wherein the driving assembly is coupled to the display panel and is configured to drive the light emitting units of the display panel to emit light.

5. A driving method of a display panel, the driving method comprising:

receiving a video frame sent by an external processor;

in response to that a first refresh rate of the currently received video frame is located in one of at least two preset frequency intervals, determining one of at least two color temperature adjustment parameters set corresponding to the at least two preset frequency intervals;

acquiring a second refresh rate of the video frame received at the previous moment;

in response to the first refresh rate being in one of at least two preset frequency intervals, determining one of at least two preset over-frequency parameters set corresponding to the at least two preset frequency intervals;

obtaining an overclocking adjusting parameter based on the second refresh rate and the preset overclocking parameter determined currently;

and determining the driving voltage of the power supply signal correspondingly output to the display panel based on the currently determined color temperature adjusting parameter and the over-frequency adjusting parameter so as to drive the display panel to display the video frame.

6. The driving method according to claim 5, wherein the step of receiving the video frame sent by the external processor is preceded by:

establishing a first mapping table based on the corresponding relation between at least two preset frequency intervals and at least two color temperature adjusting parameters;

the step of determining one of the color temperature adjustment parameters set corresponding to at least two preset frequency intervals in response to that the first refresh rate of the currently received video frame is located in one of the at least two preset frequency intervals includes:

and in response to that the first refresh rate of the currently received video frame is located in one of at least two preset frequency intervals, determining the color temperature adjusting parameter corresponding to the first refresh rate according to the first mapping table.

7. The driving method according to claim 5, wherein the step of receiving the video frame sent by the external processor is preceded by:

establishing a second mapping table based on the corresponding relation between at least two preset frequency intervals and at least two preset over-frequency parameters;

the step of determining one of at least two preset over-frequency parameters set corresponding to at least two preset frequency intervals in response to the first refresh rate being in one of the at least two preset frequency intervals comprises:

and in response to the first refresh rate being in one of at least two preset frequency intervals, determining the preset over-frequency parameter corresponding to the first refresh rate according to the second mapping table.

8. A computer-readable storage medium on which program instructions are stored, the program instructions implementing the drive method of any one of claims 5 to 7 when executed by a processor.