CN117409725A - Method, device, medium and equipment for controlling regional backlight - Google Patents

Method, device, medium and equipment for controlling regional backlight Download PDF

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Publication number
CN117409725A
CN117409725A CN202310267488.3A CN202310267488A CN117409725A CN 117409725 A CN117409725 A CN 117409725A CN 202310267488 A CN202310267488 A CN 202310267488A CN 117409725 A CN117409725 A CN 117409725A
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Prior art keywords
liquid crystal
time
target
light source
areas
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Chinese (zh)
Inventor
林科
曾露
江沛
于洋
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TCL Mobile Communication Technology Ningbo Ltd
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TCL Mobile Communication Technology Ningbo Ltd
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Priority to CN202310267488.3A priority Critical patent/CN117409725A/en
Publication of CN117409725A publication Critical patent/CN117409725A/en
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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
    • G09G3/3406—Control of illumination source
    • G09G3/342—Control of illumination source using several illumination sources separately controlled corresponding to different display panel areas, e.g. along one dimension such as lines
    • 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
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The embodiment of the application provides a method, a device, a medium and equipment for controlling regional backlight, wherein the method comprises the following steps: dividing N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas; dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas; determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed; and determining the starting time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time. According to the embodiment of the application, the backlight module is turned on by controlling the on-off time of the backlight module, namely, the backlight module is turned on when the current liquid crystal line on the miniLED liquid crystal display screen deflects to the picture corresponding to the current liquid crystal line, the current backlight module is turned off when the next frame of image frame is transmitted, and the picture seen by a user is ensured to be after the liquid crystal deflection is stable.

Description

Method, device, medium and equipment for controlling regional backlight
Technical Field
The present disclosure relates to the field of electronic communications technologies, and in particular, to a method, an apparatus, a medium, and a device for controlling a split area backlight.
Background
Each row of liquid crystal in the liquid crystal display screen is composed of a thin film transistor, after the thin film transistor is opened by a grid circuit, a source circuit is responsible for charging, during the period, a backlight module on the back of the liquid crystal display screen is responsible for providing light source illumination, and each pixel of the liquid crystal is responsible for passing light rays or not and the quantity of the passing light rays, so that a color image is formed under the cooperation of a color filter. This is the display principle of a common liquid crystal display. The backlight module is characterized by being provided with a color filter and a backlight module in a normally-bright state.
Because the liquid crystal on the liquid crystal display screen deflects under the action of the source-level circuit, the picture displayed by the liquid crystal is unstable in the deflection process, and if the backlight module is in a state of being always on at this time, the picture content of the liquid crystal when the liquid crystal is not stable can be seen by a user, and at this time, the picture crosstalk problem can be seen if the user views the picture of the liquid crystal display screen through the 3D glasses. The crosstalk, i.e. the opening and closing of the glasses shutter is not synchronous with the left and right eye images, so that superposition exists between the two images seen by the left and right eyes, and the images are blurred, thus seriously affecting the viewing.
Disclosure of Invention
The embodiment of the application provides a method, a device, a medium and equipment for controlling regional backlight, wherein the backlight is turned on by controlling the on-off time of the backlight until the current liquid crystal line on a liquid crystal display screen deflects to be stable to the corresponding picture, and the current backlight is turned off until the next frame of image frame is transmitted, so that the picture seen by a user is ensured to be after the liquid crystal deflection is stable, and the problem of picture crosstalk when the user views the picture of the liquid crystal display screen through 3D glasses is avoided.
In one aspect, an embodiment of the present application provides a method for controlling a split-area backlight, including:
dividing N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed;
and determining the opening time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source region when the target liquid crystal region deflects to the corresponding picture stability.
In the method for controlling a split-area backlight according to the embodiment of the present application, determining, according to the scanning time and the liquid crystal molecule twisting time, a target light source area on time corresponding to the target liquid crystal area includes:
substituting the scanning time and the liquid crystal molecule torsion time into a preset formula to calculate so as to obtain the target light source region starting time corresponding to the target liquid crystal region.
In the method for controlling a split area backlight according to the embodiment of the present application, the preset formula is as follows:
T b2 ＝T b +T c
wherein T is b2 For the on time of the light source region corresponding to the target liquid crystal region, T b For the scanning time, T, corresponding to the target liquid crystal region c And the corresponding liquid crystal molecule torsion time is when the target liquid crystal area is charged.
In the method for controlling the regional backlight according to the embodiment of the present application, the light source region on time corresponding to each light source region of the backlight module is sequentially turned on along with the scanning sequence of each liquid crystal region of the miniLED liquid crystal display screen.
In the method for controlling regional backlight according to the embodiment of the present application, determining a target liquid crystal region to be turned on by a light source in the N liquid crystal regions, respectively calculating a scanning time of the target liquid crystal region and a corresponding liquid crystal molecule twisting time of the target liquid crystal region when liquid crystal charging is completed, includes:
Acquiring scanning time corresponding to each row of liquid crystal in the liquid crystal area and the number of liquid crystal rows contained in the liquid crystal area;
and calculating the scanning time corresponding to the liquid crystal area based on the scanning time corresponding to each row of liquid crystal and the liquid crystal line number.
In the method for controlling a split-area backlight according to the embodiment of the present application, the obtaining the scanning time corresponding to each line of liquid crystal in the liquid crystal area includes:
acquiring a gate driving start time and a gate driving end time corresponding to each row of liquid crystal, wherein the gate driving time is used for indicating a scanning start time corresponding to each row of liquid crystal, and the gate driving end time is used for indicating a scanning end time corresponding to each row of liquid crystal;
and obtaining the scanning time corresponding to each row of liquid crystal based on the scanning start time and the scanning end second calculation.
In the method for controlling a split-area backlight according to the embodiment of the present application, determining, according to the scan time and the liquid crystal molecule twisting time, a target light source area on time corresponding to the target liquid crystal area, where the on time is used to indicate a time when the target liquid crystal area is turned on when a frame corresponding to the target liquid crystal area is deflected to be stable, including:
And calculating the scanning time corresponding to the liquid crystal region and the liquid crystal molecule torsion time to obtain the light source region starting time corresponding to the liquid crystal region.
In the method for controlling the regional backlight according to the embodiment of the present application, the complete display time of each frame of image frame on the miniLED liquid crystal display screen is less than or equal to a preset duration.
In the method for controlling the split-area backlight according to the embodiment of the present application, the method further includes:
and acquiring a synchronous control time sequence generated according to the image frame sequence, and controlling the opening and closing sequence of the backlight module according to the synchronous control time sequence.
Correspondingly, another aspect of the embodiments of the present application further provides a split-area backlight control device, including:
the first dividing module is used for dividing the N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
the second dividing module is used for dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
the first calculation module is used for determining a target liquid crystal area to be started by a light source in the N liquid crystal areas, and respectively calculating the scanning time of the target liquid crystal area and the corresponding liquid crystal molecule torsion time of the target liquid crystal area when the liquid crystal charging is completed;
And the second calculation module is used for determining the opening time of the target light source area corresponding to the target liquid crystal area according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source area when the target liquid crystal area deflects to the stable picture corresponding to the target liquid crystal area.
Accordingly, another aspect of the embodiments of the present application further provides a storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the method for controlling a split area backlight as described above.
Accordingly, another aspect of the embodiments of the present application further provides a terminal device, including a processor and a memory, where the memory stores a plurality of instructions, and the processor loads the instructions to execute the split area backlight control method as described above.
The embodiment of the application provides a method, a device, a medium and equipment for controlling regional backlight, wherein N liquid crystal regions are obtained by dividing N rows of liquid crystals on a miniLED liquid crystal display screen into regions; dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas; determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed; and determining the opening time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source region when the target liquid crystal region deflects to the corresponding picture stability. According to the embodiment of the application, the backlight module is turned on by controlling the on-off time of the backlight module, namely, the backlight module is turned on when the current liquid crystal line on the liquid crystal display screen deflects to be stable to the corresponding picture, the current backlight module is turned off when the next frame of image frame is transmitted, the picture seen by a user is ensured to be after the liquid crystal deflection is stable, and the problem of picture crosstalk when the user views the picture of the liquid crystal display screen through the 3D glasses is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings that are required to be used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained from these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a diagram of a distribution of thin film liquid crystal tubes of a miniLED liquid crystal display in a split-area backlight control method according to an embodiment of the present application.
Fig. 2 is a flow chart of a method for controlling a split area backlight according to an embodiment of the present application.
Fig. 3 is a schematic structural diagram of a split-area backlight control device according to an embodiment of the present application.
Fig. 4 is another schematic structural diagram of a split-area backlight control device according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the present application. All other embodiments, which can be made by a person skilled in the art without any inventive effort, are intended to be within the scope of the present application based on the embodiments herein.
The embodiment of the application provides a split-area backlight control method which can be applied to terminal equipment. The terminal equipment can be a smart phone, a computer and other equipment.
It should be noted that, because most of the conventional lcd panels use OLEDs, the light guide plate of the OLED is used to guide the line light source of the side light into the area light source for light emission, and after the light passes through the light guide plate, there is a serious problem of light cross between different liquid crystal areas on the lcd panel. In order to solve the problems, the mini LED is selected as the liquid crystal display screen, and the backlight module of the mini LED does not need a light guide plate, so that the problem of light cross between different liquid crystal areas can be solved.
Each row of liquid crystal in the liquid crystal display screen is composed of thin film transistors, as shown in fig. 1, after the thin film transistors are opened by a grid circuit, a source circuit is responsible for charging, during the period, a backlight module on the back of the liquid crystal display screen is responsible for providing light source illumination, and each pixel of the liquid crystal is responsible for passing light rays or not and the quantity of the passing light rays, so that a color image is formed under the cooperation of color filters. This is the display principle of a common liquid crystal display. The backlight module is characterized by being provided with a color filter and a backlight module in a normally-bright state.
Because the liquid crystal on the liquid crystal display screen deflects under the action of the source-level circuit, the picture displayed by the liquid crystal is unstable in the deflection process, and if the backlight module is in a state of being always on at this time, the picture content of the liquid crystal when the liquid crystal is not stable can be seen by a user, and at this time, the picture crosstalk problem can be seen if the user views the picture of the liquid crystal display screen through the 3D glasses. The crosstalk, i.e. the opening and closing of the glasses shutter is not synchronous with the left and right eye images, so that superposition exists between the two images seen by the left and right eyes, and the images are blurred, thus seriously affecting the viewing. Therefore, in order to solve the problem, the embodiment of the application provides a split-area backlight control method. By using the regional backlight control method provided by the embodiment of the application, the backlight module is turned on by controlling the on-off time of the backlight module, namely, when the current liquid crystal line on the liquid crystal display screen deflects to the corresponding picture stability, the current backlight module is turned off when the next frame of image frame is transmitted, the picture seen by the user is ensured to be after the liquid crystal deflection is stable, and the problem of picture crosstalk when the user views the picture of the liquid crystal display screen through the 3D glasses is avoided.
Referring to fig. 2, fig. 2 is a flow chart of a method for controlling a split area backlight according to an embodiment of the present application. The method for controlling the regional backlight is applied to the terminal equipment, and can comprise the following steps:
and step 101, dividing the N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas.
Step 102, performing area division on the light source of the backlight module to obtain N light source areas corresponding to the N liquid crystal areas.
It should be explained that, in order to ensure that the user cannot see the picture displayed by the liquid crystal in an unstable state when watching the liquid crystal display screen, the light source of the backlight module needs to be turned on correspondingly for each row of liquid crystal on the miniLED liquid crystal display screen, that is, the light source area of the backlight module under each row of liquid crystal is turned on correspondingly when each row of liquid crystal deflects stably, and the light source area can only illuminate the row of liquid crystal above the light source area and does not affect the display of other rows of liquid crystals.
It should be further explained that, the light source region on time corresponding to each light source region of the backlight module is sequentially turned on along with the scanning sequence of each liquid crystal region of the miniLED liquid crystal display screen, so as to realize the sectional turn-on of the light source of the backlight module and ensure that the user end always sees the picture displayed after the liquid crystal deflection is stable on the miniLED liquid crystal display screen.
Step 103, determining target liquid crystal areas to be turned on by the light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed.
Further, in order to acquire the scanning time corresponding to the target liquid crystal region, it is necessary to acquire a gate driving start time and a gate driving end time corresponding to the target liquid crystal region, where the gate driving time is used to indicate a scanning start time corresponding to the target liquid crystal region, and the gate driving end time is used to indicate a scanning end time corresponding to the target liquid crystal region.
In this embodiment, the scan time corresponding to the target liquid crystal region can be calculated by:
T b1 ＝T f -T r
wherein T is b1 For the scanning time corresponding to the target liquid crystal area, T f For the gate drive end time, T r Is the gate drive start time.
In this embodiment, when each row of liquid crystal is charged, each thin film liquid crystal tube on the row of liquid crystal starts to deflect until the thin film liquid crystal tube reaches the requirement of deflection voltage, the display screen corresponding to the thin film liquid crystal tube is stable, and the liquid crystal deflection stable time is usually 6-8 ms, and there are differences according to the characteristics of the liquid crystal and the manufacturing process of the liquid crystal panel. From the above, a certain time is required for each line of liquid crystal in the miniLED lcd to pass after the scanning is completed, so that the picture can be stabilized, i.e. the liquid crystal molecule twisting time.
Step 104, determining a target light source region on time corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the on time is used for indicating the on time of the target light source region when the target liquid crystal region deflects to the stable picture corresponding to the target liquid crystal region.
After the scanning time corresponding to the liquid crystal area and the corresponding liquid crystal molecule torsion time are obtained, the actual time corresponding to the liquid crystal area when the picture is stable can be calculated.
In this embodiment, the scanning time and the liquid crystal molecule twisting time corresponding to the liquid crystal region are calculated to obtain the light source region on time corresponding to the liquid crystal region as follows:
T b2 ＝T b +T c
wherein T is b2 For the light source region on time corresponding to the liquid crystal region，T b For the corresponding scanning time of the liquid crystal area, T c And the corresponding liquid crystal molecule torsion time is when the charging of the liquid crystal area is completed.
It should be noted that, in order to ensure that the liquid crystal scanning operation can be completed within the prescribed display time of the image frames, the complete display time of each image frame on the miniLED liquid crystal display screen needs to be less than or equal to the preset duration.
The preset time length is as follows:
T z ＝1/f
T z f is the refresh rate of the miniLED liquid crystal display for the preset time length. For example, T is set at a refresh rate of 120HZ for a miniLED liquid crystal display z ＝1/f＝1/120＝8.33ms。
In some embodiments, the method further comprises the steps of:
and acquiring a synchronous control time sequence generated according to the image frame sequence, and controlling the opening and closing sequence of the backlight module according to the synchronous control time sequence.
In this embodiment, since the picture displayed by the liquid crystal on the display screen during the deflection process is unstable, if the backlight display unit is in a state of being always on, the user can see the picture content of the liquid crystal when the liquid crystal is not stable, and at this time, the crosstalk problem occurs in the picture seen by the user through the 3D glasses. That is, the opening and closing of the glasses shutter are not synchronous with the left and right eye images, so that superposition exists between two images seen by the left and right eyes, and the images are blurred, so that the viewing is seriously affected. Therefore, in order to solve the problem, the backlight module needs to be turned on by controlling the on/off timing of the backlight module to be synchronous with the image frame sequence, that is, the backlight module is turned on when the frame of the current nth image frame is stable, the current backlight module is turned off when the next (n+1) th image frame is transmitted, and the backlight module is turned on when the frame of the (n+1) th image frame is stable.
In some embodiments, the light valve driver generates left and right eye-opening light signals of the light valve according to a synchronous control timing of the image frame sequence. The specific embodiment is similar to the backlight module, and will not be described herein.
Any combination of the above optional solutions may be adopted to form an optional embodiment of the present application, which is not described herein in detail.
In particular, the present application is not limited by the order of execution of the steps described, and certain steps may be performed in other orders or concurrently without conflict.
As can be seen from the above, the method for controlling the split-area backlight provided in the embodiments of the present application obtains N liquid crystal areas by dividing the N rows of liquid crystals on the miniLED liquid crystal display screen into areas; dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas; determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed; and determining the opening time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source region when the target liquid crystal region deflects to the corresponding picture stability. According to the embodiment of the application, the backlight module is turned on by controlling the on-off time of the backlight module, namely, the backlight module is turned on when the current liquid crystal line on the liquid crystal display screen deflects to be stable to the corresponding picture, the current backlight module is turned off when the next frame of image frame is transmitted, the picture seen by a user is ensured to be after the liquid crystal deflection is stable, and the problem of picture crosstalk when the user views the picture of the liquid crystal display screen through the 3D glasses is avoided.
The embodiment of the application also provides a regional backlight control device which can be integrated in the terminal equipment. The terminal equipment can be a smart phone, a tablet personal computer and other equipment.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a split-area backlight control device according to an embodiment of the present application. The split area backlight control apparatus 30 may include:
the first dividing module 31 is configured to divide the N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
the second dividing module 32 is configured to divide the light source of the backlight module into N light source areas corresponding to the N liquid crystal areas;
a first calculating module 33, configured to determine a target liquid crystal area to be turned on by a light source in the N liquid crystal areas, and calculate a scanning time of the target liquid crystal area, and a corresponding liquid crystal molecule twisting time of the target liquid crystal area when liquid crystal charging is completed;
the second obtaining module 34 is configured to determine, according to the scan time and the liquid crystal molecule twisting time, a target light source region on time corresponding to the target liquid crystal region, where the on time is used to indicate a time when the target light source region is turned on when the target liquid crystal region deflects to a frame corresponding to the target liquid crystal region.
In some embodiments, the light source region on time corresponding to each light source region of the backlight module is sequentially turned on along with the scanning sequence of each liquid crystal region of the miniLED liquid crystal display screen.
In some embodiments, the first calculating module 33 is configured to substitute the scanning time and the liquid crystal molecule twisting time into a preset formula to calculate, so as to obtain a target light source region on time corresponding to the target liquid crystal region.
In some embodiments, the preset formula:
T b2 ＝T b +T c
wherein T is b2 For the on time of the light source region corresponding to the target liquid crystal region, T b For the scanning time, T, corresponding to the target liquid crystal region c And the corresponding liquid crystal molecule torsion time is when the target liquid crystal area is charged.
In some embodiments, the first calculating module 33 is configured to obtain a gate driving start time and a gate driving end time corresponding to each row of liquid crystals, where the gate driving time is used to indicate a scanning start time corresponding to each row of liquid crystals, and the gate driving end time is used to indicate a scanning end time corresponding to each row of liquid crystals; and calculating the scanning time corresponding to each row of liquid crystal based on the scanning start time and the scanning end time.
In some embodiments, the second calculating module 34 is configured to calculate the scanning time corresponding to the liquid crystal region and the liquid crystal molecule twisting time to obtain the light source region on time corresponding to the liquid crystal region.
In some embodiments, the complete display time of each frame of image frame on the miniLED liquid crystal display screen is less than or equal to a preset duration.
In some embodiments, the device further includes a control module, configured to obtain a synchronization control timing sequence generated according to the image frame sequence, and control the on/off sequence of the backlight module according to the synchronization control timing sequence.
In specific implementation, each module may be implemented as a separate entity, or may be combined arbitrarily and implemented as the same entity or several entities.
As can be seen from the above, the split-area backlight control device 30 provided in the embodiment of the present application performs, through the first dividing module 31, area division on N rows of liquid crystals on the miniLED liquid crystal display screen, so as to obtain N liquid crystal areas; the second dividing module 32 performs area division on the light source of the backlight module to obtain N light source areas corresponding to the N liquid crystal areas; the first calculating module 33 determines a target liquid crystal area to be turned on by a light source in the N liquid crystal areas, and calculates a scanning time of the target liquid crystal area and a corresponding liquid crystal molecule torsion time of the target liquid crystal area when liquid crystal charging is completed; the second calculation module 34 determines a target light source region on time corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule twisting time, where the on time is used to indicate a time when the target light source region is turned on when the target liquid crystal region deflects to a stable frame corresponding to the target liquid crystal region.
Referring to fig. 4, fig. 4 is another schematic structural diagram of a split area backlight control apparatus according to an embodiment of the present application, where the split area backlight control apparatus 30 includes a memory 120, one or more processors 180, and one or more application programs, and the one or more application programs are stored in the memory 120 and configured to be executed by the processors 180; the processor 180 may include a first partitioning module 31, a second partitioning module 32, a first computing module 33, and a second computing module 34. For example, the structures and connection relationships of the above respective components may be as follows:
memory 120 may be used to store applications and data. The memory 120 stores application programs including executable code. Applications may constitute various functional modules. The processor 180 executes various functional applications and data processing by running application programs stored in the memory 120. In addition, memory 120 may include high-speed random access memory, and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 120 may also include a memory controller to provide access to the memory 120 by the processor 180.
The processor 180 is a control center of the device, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the device and processes data by running or executing application programs stored in the memory 120 and calling data stored in the memory 120, thereby performing overall monitoring of the device. Optionally, the processor 180 may include one or more processing cores; preferably, the processor 180 may integrate an application processor and a modem processor, wherein the application processor primarily processes an operating system, user interfaces, application programs, and the like.
In particular, in this embodiment, the processor 180 loads executable codes corresponding to the processes of one or more application programs into the memory 120 according to the following instructions, and the processor 180 executes the application programs stored in the memory 120, so as to implement various functions:
the first division instruction is used for dividing areas of N rows of liquid crystals on the miniLED liquid crystal display screen to obtain N liquid crystal areas;
the second division instruction is used for dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
A first calculation instruction, configured to determine a target liquid crystal region to be turned on by a light source in the N liquid crystal regions, and calculate a scanning time of the target liquid crystal region and a corresponding liquid crystal molecule twisting time of the target liquid crystal region when liquid crystal charging is completed;
and the second calculation mode instruction is used for determining the opening time of the target light source area corresponding to the target liquid crystal area according to the scanning time and the liquid crystal molecule torsion time, and the opening time is used for indicating the opening time of the target light source area when the target liquid crystal area deflects to the stable picture corresponding to the target liquid crystal area.
In some embodiments, the first calculation instruction is configured to substitute the scanning time and the liquid crystal molecule twisting time into a preset formula to perform calculation, so as to obtain a target light source region on time corresponding to the target liquid crystal region.
In some embodiments, the preset formula:
T b2 ＝T b +T c
wherein T is b2 For the on time of the light source region corresponding to the target liquid crystal region, T b For the scanning time, T, corresponding to the target liquid crystal region c And the corresponding liquid crystal molecule torsion time is when the target liquid crystal area is charged.
In some embodiments, the light source region on time corresponding to each light source region of the backlight module is sequentially turned on along with the scanning sequence of each liquid crystal region of the miniLED liquid crystal display screen.
In some embodiments, the first calculation instruction is configured to obtain a gate driving start time and a gate driving end time corresponding to each row of liquid crystals, where the gate driving time is used to indicate a scanning start time corresponding to each row of liquid crystals, and the gate driving end time is used to indicate a scanning end time corresponding to each row of liquid crystals; and calculating the scanning time corresponding to each row of liquid crystal based on the scanning start time and the scanning end time.
In some embodiments, the second calculation instruction is configured to calculate a scanning time corresponding to the liquid crystal region and the liquid crystal molecule twisting time to obtain a light source region on time corresponding to the liquid crystal region.
In some embodiments, the complete display time of each frame of image frame on the miniLED liquid crystal display screen is less than or equal to a preset duration.
In some embodiments, the device further includes a control instruction, configured to obtain a synchronization control timing sequence generated according to the image frame sequence, and control the on/off sequence of the backlight module according to the synchronization control timing sequence.
The embodiment of the application also provides terminal equipment. The terminal equipment can be smart phones, computers, tablet computers and other equipment.
Referring to fig. 5, fig. 5 shows a schematic structural diagram of a terminal device provided in an embodiment of the present application, where the terminal device may be used to implement the split-area backlight control method provided in the foregoing embodiment. The terminal device 1200 may be a television or a smart phone or a tablet computer.
As shown in fig. 5, the terminal device 1200 may include an RF (Radio Frequency) circuit 110, a memory 120 including one or more (only one is shown in the figure) computer readable storage mediums, an input unit 130, a display unit 140, a sensor 150, an audio circuit 160, a transmission module 170, a processor 180 including one or more (only one is shown in the figure) processing cores, and a power supply 190. It will be appreciated by those skilled in the art that the configuration of the terminal device 1200 shown in fig. 5 does not constitute a limitation of the terminal device 1200, and may include more or fewer components than shown, or may combine certain components, or may have a different arrangement of components. Wherein:
the RF circuit 110 is configured to receive and transmit electromagnetic waves, and to perform mutual conversion between the electromagnetic waves and the electrical signals, so as to communicate with a communication network or other devices. RF circuitry 110 may include various existing circuit elements for performing these functions, such as an antenna, a radio frequency transceiver, a digital signal processor, an encryption/decryption chip, a Subscriber Identity Module (SIM) card, memory, and the like. The RF circuitry 110 may communicate with various networks such as the internet, intranets, wireless networks, or other devices via wireless networks.
The memory 120 may be used to store software programs and modules, such as program instructions/modules corresponding to the split area backlight control method in the above embodiment, and the processor 180 executes various functional applications and data processing by running the software programs and modules stored in the memory 120, so that the split area backlight control can be performed by automatically selecting a vibration reminding mode according to the current scene where the terminal device is located, which can ensure that the scenes such as a conference are not disturbed, and ensure that the user can perceive an incoming call, thereby improving the intelligence of the terminal device. Memory 120 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, memory 120 may further include memory remotely located relative to processor 180, which may be connected to terminal device 1200 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.
The input unit 130 may be used to receive input numeric or character information and to generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control. In particular, the input unit 130 may comprise a touch sensitive surface 131 and other input devices 132. The touch sensitive surface 131, also referred to as a touch display screen or touch pad, may collect touch operations thereon or thereabout by a user (e.g., operations of the user on the touch sensitive surface 131 or thereabout by any suitable object or accessory such as a finger, stylus, etc.), and actuate the corresponding connection means according to a pre-set program. Alternatively, the touch sensitive surface 131 may comprise two parts, a touch detection device and a touch controller. The touch control detection device detects the touch control direction of a user, detects signals brought by touch control operation and transmits the signals to the touch control controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch coordinates, sends the touch coordinates to the processor 180, and can receive and execute commands sent by the processor 180. In addition, the touch-sensitive surface 131 may be implemented in various types of resistive, capacitive, infrared, surface acoustic wave, and the like. In addition to the touch-sensitive surface 131, the input unit 130 may also comprise other input devices 132. In particular, other input devices 132 may include, but are not limited to, one or more of a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, mouse, joystick, etc.
The display unit 140 may be used to display information input by a user or information provided to the user and various graphical user interfaces of the terminal device 1200, which may be composed of graphics, text, icons, video, and any combination thereof. The display unit 140 may include a display panel 141, and alternatively, the display panel 141 may be configured in the form of an LCD (Liquid Crystal Display ), an OLED (Organic Light-Emitting Diode), or the like. Further, the touch-sensitive surface 131 may cover the display panel 141, and after the touch-sensitive surface 131 detects a touch operation thereon or thereabout, the touch-sensitive surface is transferred to the processor 180 to determine a type of touch event, and then the processor 180 provides a corresponding visual output on the display panel 141 according to the type of touch event. Although in fig. 5 the touch-sensitive surface 131 and the display panel 141 are implemented as two separate components for input and output functions, in some embodiments the touch-sensitive surface 131 may be integrated with the display panel 141 to implement the input and output functions.
The terminal device 1200 may also include at least one sensor 150, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor may include an ambient light sensor that may adjust the brightness of the display panel 141 according to the brightness of ambient light, and a proximity sensor that may turn off the display panel 141 and/or the backlight when the terminal device 1200 moves to the ear. As one of the motion sensors, the gravity acceleration sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and the direction when the mobile phone is stationary, and can be used for applications of recognizing the gesture of the mobile phone (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; other sensors such as gyroscopes, barometers, hygrometers, thermometers, infrared sensors, etc. that may also be configured with the terminal device 1200 are not described in detail herein.
Audio circuitry 160, speaker 161, microphone 162 may provide an audio interface between a user and terminal device 1200. The audio circuit 160 may transmit the received electrical signal converted from audio data to the speaker 161, and the electrical signal is converted into a sound signal by the speaker 161 to be output; on the other hand, the microphone 162 converts the collected sound signal into an electrical signal, receives the electrical signal from the audio circuit 160, converts the electrical signal into audio data, outputs the audio data to the processor 180 for processing, transmits the audio data to, for example, another terminal via the RF circuit 110, or outputs the audio data to the memory 120 for further processing. Audio circuitry 160 may also include an ear bud jack to provide communication of the peripheral headphones with terminal device 1200.
Terminal device 1200 may facilitate user email, web browsing, streaming media access, etc. via a transmission module 170 (e.g., wi-Fi module) that provides wireless broadband internet access to the user. Although fig. 5 shows the transmission module 170, it is understood that it does not belong to the essential constitution of the terminal device 1200, and may be omitted entirely as needed within the scope of not changing the essence of the invention.
The processor 180 is a control center of the terminal device 1200, connects various parts of the entire mobile phone using various interfaces and lines, and performs various functions of the terminal device 1200 and processes data by running or executing software programs and/or modules stored in the memory 120, and calling data stored in the memory 120, thereby performing overall monitoring of the mobile phone. Optionally, the processor 180 may include one or more processing cores; in some embodiments, the processor 180 may integrate an application processor that primarily processes operating systems, user interfaces, applications, etc., with a modem processor that primarily processes wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 180.
The terminal device 1200 also includes a power supply 190 that provides power to the various components, and in some embodiments, may be logically coupled to the processor 180 via a power management system to perform functions such as managing discharge, and managing power consumption via the power management system. The power supply 190 may also include one or more of any of a direct current or alternating current power supply, a recharging system, a power failure detection circuit, a power converter or inverter, a power status indicator, and the like.
Although not shown, the terminal device 1200 may further include a camera (such as a front camera, a rear camera), a bluetooth module, etc., which will not be described herein. In particular, in the present embodiment, the display unit 140 of the terminal device 1200 is a touch screen display, the terminal device 1200 further includes a memory 120, and one or more programs, wherein the one or more programs are stored in the memory 120 and configured to be executed by the one or more processors 180, the one or more programs include instructions for:
the first division instruction is used for dividing areas of N rows of liquid crystals on the miniLED liquid crystal display screen to obtain N liquid crystal areas;
The second division instruction is used for dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
a first calculation instruction, configured to determine a target liquid crystal region to be turned on by a light source in the N liquid crystal regions, and calculate a scanning time of the target liquid crystal region and a corresponding liquid crystal molecule twisting time of the target liquid crystal region when liquid crystal charging is completed;
and the second calculation mode instruction is used for determining the opening time of the target light source area corresponding to the target liquid crystal area according to the scanning time and the liquid crystal molecule torsion time, and the opening time is used for indicating the opening time of the target light source area when the target liquid crystal area deflects to the stable picture corresponding to the target liquid crystal area.
In some embodiments, the first calculation instruction is configured to substitute the scanning time and the liquid crystal molecule twisting time into a preset formula to perform calculation, so as to obtain a target light source region on time corresponding to the target liquid crystal region.
In some embodiments, the preset formula:
T b2 ＝T b +T c
wherein T is b2 For the on time of the light source region corresponding to the target liquid crystal region, T b For the scanning time, T, corresponding to the target liquid crystal region c And the corresponding liquid crystal molecule torsion time is when the target liquid crystal area is charged.
In some embodiments, the light source region on time corresponding to each light source region of the backlight module is sequentially turned on along with the scanning sequence of each liquid crystal region of the miniLED liquid crystal display screen.
In some embodiments, the first calculation instruction is configured to obtain a gate driving start time and a gate driving end time corresponding to each row of liquid crystals, where the gate driving time is used to indicate a scanning start time corresponding to each row of liquid crystals, and the gate driving end time is used to indicate a scanning end time corresponding to each row of liquid crystals; and calculating the scanning time corresponding to each row of liquid crystal based on the scanning start time and the scanning end time.
In some embodiments, the second calculation instruction is configured to calculate a scanning time corresponding to the liquid crystal region and the liquid crystal molecule twisting time to obtain a light source region on time corresponding to the liquid crystal region.
In some embodiments, the complete display time of each frame of image frame on the miniLED liquid crystal display screen is less than or equal to a preset duration.
In some embodiments, the device further includes a control instruction, configured to obtain a synchronization control timing sequence generated according to the image frame sequence, and control the on/off sequence of the backlight module according to the synchronization control timing sequence.
The embodiment of the application also provides terminal equipment. The terminal equipment can be a smart phone, a computer and other equipment.
As can be seen from the above, the embodiments of the present application provide a terminal device 1200, where the terminal device 1200 performs the following steps:
dividing N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed;
and determining the opening time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source region when the target liquid crystal region deflects to the corresponding picture stability.
The embodiment of the present application further provides a storage medium, where a computer program is stored, where when the computer program runs on a computer, the computer executes the split area backlight control method described in any one of the embodiments above:
Dividing N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed;
and determining the opening time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source region when the target liquid crystal region deflects to the corresponding picture stability.
It should be noted that, for the split area backlight control method described in the present application, it will be understood by those skilled in the art that all or part of the flow of implementing the split area backlight control method described in the embodiments of the present application may be implemented by controlling related hardware by using a computer program, where the computer program may be stored in a computer readable storage medium, such as a memory of a terminal device, and executed by at least one processor in the terminal device, and the execution process may include the flow of the embodiment of the split area backlight control method. The storage medium may be a magnetic disk, an optical disk, a Read Only Memory (ROM), a random access Memory (RAM, random Access Memory), or the like.
For the split-area backlight control device in the embodiment of the present application, each functional module may be integrated in one processing chip, or each module may exist separately and physically, or two or more modules may be integrated in one module. The integrated modules may be implemented in hardware or in software functional modules. The integrated module, if implemented as a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium such as read-only memory, magnetic or optical disk, etc.
The method, the device, the medium and the equipment for controlling the regional backlight provided by the embodiment of the application are described in detail. The principles and embodiments of the present application are described herein with specific examples, the above examples being provided only to assist in understanding the methods of the present application and their core ideas; meanwhile, those skilled in the art will have variations in the specific embodiments and application scope in light of the ideas of the present application, and the present description should not be construed as limiting the present application in view of the above.

Claims (10)

1. A method of zoned backlight control, comprising:
dividing N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
determining target liquid crystal areas to be turned on by a light source in the N liquid crystal areas, and respectively calculating scanning time of the target liquid crystal areas and corresponding liquid crystal molecule torsion time of the target liquid crystal areas when liquid crystal charging is completed;
and determining the opening time of the target light source region corresponding to the target liquid crystal region according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source region when the target liquid crystal region deflects to the corresponding picture stability.
2. The method of claim 1, wherein determining a target light source region on time corresponding to the target liquid crystal region according to the scan time and the liquid crystal molecule twist time comprises:
substituting the scanning time and the liquid crystal molecule torsion time into a preset formula to calculate so as to obtain the target light source region starting time corresponding to the target liquid crystal region.
3. The method of claim 2, wherein the predetermined formula:
T b2 ＝T b +T c
wherein T is b2 For the on time of the light source region corresponding to the target liquid crystal region, T b For the scanning time, T, corresponding to the target liquid crystal region c And the corresponding liquid crystal molecule torsion time is when the target liquid crystal area is charged.
4. The method of claim 1, wherein the light source area on-time corresponding to each light source area of the backlight module is sequentially on along with the scanning sequence of each liquid crystal area of the miniLED liquid crystal display screen.
5. The method of claim 4, wherein calculating the scan time of the target liquid crystal region comprises:
acquiring a gate driving start time and a gate driving end time corresponding to a target liquid crystal region, wherein the gate driving time is used for indicating a scanning start time corresponding to the target liquid crystal region, and the gate driving end time is used for indicating a scanning end time corresponding to the target liquid crystal region;
and calculating to obtain the scanning time corresponding to the target liquid crystal area based on the scanning start time and the scanning end time.
6. The method of claim 1, wherein the complete display time of each frame of image frame on the miniLED liquid crystal display screen is less than or equal to a preset time period.
7. The split area backlight control method of claim 1, further comprising: and acquiring a synchronous control time sequence generated according to the image frame sequence, and controlling the opening and closing sequence of the backlight module according to the synchronous control time sequence.
8. A split area backlight control apparatus, comprising:
the first dividing module is used for dividing the N rows of liquid crystals on the miniLED liquid crystal display screen into N liquid crystal areas;
the second dividing module is used for dividing the light source of the backlight module into areas to obtain N light source areas corresponding to the N liquid crystal areas;
the first calculation module is used for determining a target liquid crystal area to be started by a light source in the N liquid crystal areas, and respectively calculating the scanning time of the target liquid crystal area and the corresponding liquid crystal molecule torsion time of the target liquid crystal area when the liquid crystal charging is completed;
and the second calculation module is used for determining the opening time of the target light source area corresponding to the target liquid crystal area according to the scanning time and the liquid crystal molecule torsion time, wherein the opening time is used for indicating the opening time of the target light source area when the target liquid crystal area deflects to the stable picture corresponding to the target liquid crystal area.
9. A computer readable storage medium storing a plurality of instructions adapted to be loaded by a processor to perform the split area backlight control method of any one of claims 1 to 7.
10. A terminal device comprising a processor and a memory, the memory storing a plurality of instructions, the processor loading the instructions to perform the split area backlight control method of any one of claims 1 to 7.
CN202310267488.3A 2023-03-13 2023-03-13 Method, device, medium and equipment for controlling regional backlight Pending CN117409725A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310267488.3A CN117409725A (en) 2023-03-13 2023-03-13 Method, device, medium and equipment for controlling regional backlight

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310267488.3A CN117409725A (en) 2023-03-13 2023-03-13 Method, device, medium and equipment for controlling regional backlight

Publications (1)

Publication Number Publication Date
CN117409725A true CN117409725A (en) 2024-01-16

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Country Status (1)

Country Link
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